ML081500373

Response to Request for Additional Information Concerning License Amendment Request - Application of Alternative Source Term

ML081500373
Person / Time
Site:	Peach Bottom
Issue date:	05/23/2008
From:	Cowan P Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML081500373 (154)

Text

Exelon Nuclear www.exeloncorp.com Exelkn.

200 Exelon Way Nucear Kennett.Square, PA 19348' May 23, 2008 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 Docket Nos. 50-277 and 50-278

Subject:

Response to Request for Additional Information Concerning License Amendment Request - Application of Alternative Source Term

References:

1. Letter from Pamela B. Cowan, Exelon Generation Company, LLC, to U. S. Nuclear Regulatory Commission, "License Amendment Request - Application of Alternative Source Term," dated July 13, 2007

2. U.S. Nuclear Regulatory Commission e-mail dated April 14, 2008, Draft Request for Additional Information Regarding License Amendment Request for the Application of Alternative Source Term at Peach Bottom Atomic Power Station, Units 2 and 3 In Reference 1, Exelon Generation Company, LLC (Exelon) submitted an application requesting a change to the Technical Specifications (TS), Appendix A, of Renewed Facility Operating License Nos. DPR-44 and DPR-56 for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3, respectively. The proposed change was requested to support the application of Alternative Source Term (AST) methodology at PBAPS, Units 2 and 3.

In Reference 2, the Nuclear Regulatory Commission (NRC) requested additional information concerning the PBAPS License Amendment Request (LAR). In particular, the NRC requested that Exelon provide additional information pertaining to meteorological and dose consequence issues related to AST. The enclosure to this letter restates each of the NRC's questions followed by Exelon's response.

Exelon has concluded that the information provided in this response does not impact the conclusions of the: 1) Technical Analysis, 2) No Significant Hazards Consideration under the standards set forth in 10 CFR 50.92(c), or 3) Environmental Consideration as provided in the original submittal (Reference 1).

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 2 There are no regulatory commitments contained within this letter. If you have any further questions or require additional information, please contact Richard Gropp at 610-765-5557.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 23rd day of May 2008.

Respectfully, Pamela B. 6owan Director - Licensing and Regulatory Affairs Exelon Generation Company, LLC

Enclosure:

Response to Request for Additional Information cc: Regional Administrator - NRC Region I w/ Enclosure NRC Senior Resident Inspector - PBAPS NRC Project Manager, NRR - PBAPS Director, Bureau of Radiation Protection - Pennsylvania Department of Environmental Protection

ENCLOSURE Peach Bottom Atomic Power Station Units 2 and 3 Docket Nos. 50-277 and 50-278 License Amendment Request Response to Request for Additional Information Alternative Source Term (AST)

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 1

Background

By letter dated July 13, 2007, Exelon Generation Company, LLC (Exelon) submitted an application requesting a change to the Technical Specifications (TS), Appendix A, of Renewed Facility Operating License Nos. DPR-44 and DPR-56 for Peach Bottom Atomic Power Station (PBAPS),

Units 2 and 3, respectively. The proposed change was requested to support the application of Alternative Source Term (AST) methodology at PBAPS, Units 2 and 3.

Subsequently, in an e-mail dated April 14, 2008, the NRC requested additional information concerning certain issues regarding the PBAPS, Units 2 and 3, License Amendment Request (LAR). Exelon committed to provide a response to the request for additional information by May 27, 2008. The specific questions are restated below followed by Exelon's response.

NRC Question 1 (AADB RAI 1)

Forthe dose consequence design basis accidents (DBAs) evaluated for the proposedAlternative Source Term (AST) amendment, Exelon listed the design input parametersin Table 4.3.1 for the AST loss of coolant accident(LOCA) analysis. In the comments section of the table, Exelon notes when a parameteris unchanged from the current licensing basis (CLB) value. For other parameters,Exelon provides a Regulatory Guide (RG), NUREG-0800, "StandardReview Plan for the Review of Safety Analysis Reports for Nuclear Power Plants"(SRP) or other regulatory guidance reference. For the remainingrevised or new parameters, Table 4.3.1 references a Peach Bottom calculation. For the remainingparameters,where Table 4.3.1 references a Peach Bottom calculation,please provide the regulatorybasis for the CLB change or the new AST parameter.

Additionally, the NRC staff requests that the licensee provide the information requestedabove in an expanded Table 4.3.1 for the applicableAST LOCA analysisparameters. (See Regulatory Position 1.3.2 and 1.3.4 of RG 1.183 and Regulatory Issues Summary (RIS) 2006-04).

Response

The NRC re-analysis guidance in Regulatory Guide (RG) 1.183, Section 1.3.2, for full implementation of an AST, is satisfactorily implemented by complete recalculation of all facility radiological analyses and evaluation of the current design bases affected by the proposed AST characteristics, TEDE dose criteria, and resulting plant modifications. The Design Input Table in Section 5.0 of Calculation PM-1077 lists the current licensing basis (CLB) as-built design input values along with the modified values used in the revised analysis. These values are compatible with the AST characteristics and suitable for the proposed plant modifications. Table 4.3-1 which was included in the PBAPS LAR is a slightly modified version of Section 5.0 of Calculation PM-1077, and provides only the new design input values used in the AST analysis that replace the existing CLB design input values, as required for the NRC technical review. The design input information in Section 5.0 of Calculation PM-1077 is reproduced in Table 4 of this response to provide the NRC the CLB information requested in this RAI. Table 4 is an updated version of Table 4.3-1, which now includes information to clarify whether the regulatory basis was unchanged

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 2 or considered as a new assumption in support of AST. The compliance to RG 1.183, Section 1.3.4 requirements is related to the updating of analyses following implementation of the AST, which is not the scope of the proposed license amendment request.

NRC Question 2 (AADB RAI 2)

The NRC staff requests that the licensee provide the regulatorybasis references for revised or new licensing basisparametersfor the Peach Bottom AST Fuel HandlingAccident (FHA) in Table 4.4-2, as well as the assumptions used for the Control Rod Drop Accident (CRDA) and the assumptions used for the Main Steam Line Break Accident (MSLB). The design basis parameters should be clearly marked as a CLB parameteror a revised or new parameterwith the associated regulatorybasis referenced.

Response

As requested, refer to the attached tables in this enclosure for the regulatory basis references for the revised or new licensing basis parameters related to AST for the Fuel Handling Accident (FHA),

Control Rod Drop Accident (CRDA), Main Steam Line Break Accident (MSLB), and Loss of Coolant Accident (LOCA). The following tables are included:

" Table 1 includes the information for the FHA

" Table 2 includes the information for the CRDA

• Table 3 includes the information for the MSLB

" Table 4 includes the information for the LOCA NRC Question 3 (AADB RAI 3)

In section 4.1.2, Exelon states that, "Forthe DBA LOCA, all fuel assemblies in the core are assumed to be affected and the core average inventory is used. For DBA events that do not involve the entire core (CRDA and FHA), the fission product inventory of each of the damaged fuel rods is determined by dividing the total core inventory by the number of fuel rods in the core. To account for differences in power level across the core, radialpeaking factors are appliedin determining the inventory of the damaged rods. For the MSLB event, no fuel damage is postulated to occur."

Provide the justification or reference that supports the conclusion that no fuel damage (e.g. fuel does not reach a transition boiling state or criticalheat flux) will occur in the event of a MSLB outside containment.

Response

General Electric (GE) Topical Report NEDO-24708A, "AdditionalInformation Required for NRC Staff Generic Report on Boiling Water Reactors," Revision 1, dated December 1980, provides the reference supporting the current MSLB event model with no fuel damage. PBAPS UFSAR Section 14.6.5.1.3, "CoolantLoss and Reactor Vessel Water Level," indicates that: "...Analysis of fuel conditions reveals that no fuel rod perforationsdue to high temperature occur during the

U. S. Nuclear Regulatory Commission LicenseAmendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 3 depressurization,even with the conservative assumptions regarding the operation of the recirculationand feedwater systems for the transientsteps assumed in the MSLB. MCHFR remains above 1.0 at all times during the transient. No fuel rod failures due to mechanical loading during the depressurizationoccur because the differentialpressures resulting from the transientdo not exceed the designed mechanical strength of the core assembly ....."

NRC Question 4 (AADB RAI 4)

In its submittal Exelon assumes a value of 0. 77% fuel melting for the CRDA. Provide the basis or justification for using the assumed 0. 77% fuel melting value for Peach Bottom.

Response

The current design basis for fuel damage from a CRDA is based on GE14 10x10 fuel in an 87.33 equivalent fuel pin array. The fuel damage (i.e., number of rods with failed cladding and fuel melting) assumptions correspond to those as documented in GE NEDE-31152P, Revision 7, "GeneralElectric Fuel Bundle Designs,"June 2000. Attachment A of previously provided Calculation PM-1 057, Revision 1, shows the parameters and breakdown of the fuel damage and subsequent activity released.

NRC Question 5 (AADB RAI 5)

In section 4.2.2.3, "ControlRoom," Exelon assumed the unfiltered in-leakage into the control room (CR) ventilation boundary is the equivalent of the CR intake condition. Provide furtherreference or justification of this assumption for the Peach Bottom CR dose consequence modeling. Did Exelon evaluate potentialinfiltrationsources other than the CR intake location? For example, was intake or infiltration from areas and structures adjacent to the CR analyzed to determine the most limiting infiltration location (See Regulatory Position4.2.1 of RG 1.183)?

Response

The PBAPS AST LAR Section 4.2.2.3 states, 'The infiltration paths were not specifically identified via in-leakage testing via tracer gas." Since the control room was verified to be at a positive pressure with respect to adjacent areas, the in-leakage is through the ventilation system. The ventilation system, including the air supply ducts and fans that are located in the radwaste building adjacent to the control room (CR), becomes the prime source for the unfiltered in-leakage. The Main Control Room Emergency Ventilation (MCREV) system and radwaste building air supplies are located in the vicinity of each other in the west wall of the radwaste building. Therefore, the MCREV system air intake and infiltration use the same x/Qs per RG 1.194, Section 3.3.3. The LAR Section 4.2.2.3 described the CR response during a LOCA. A parametric study was performed to determine the CR intake flow rate that maximizes the CR dose during the 30 minutes in which MCREV initiation is delayed; the parametric study results are plotted in Figure 1. Per RG 1.183, Section 4.2.1, the CR dose analysis includes the infiltration of 18,500 cfm and 500 cfm during the MCREV initiation delay and following the initiation of the MCREV system, respectively,

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 4 as stated in LAR Section 4.3.3 and as shown in Figures 1 and 4. This information is captured in Design Inputs 5.6.4 and 5.6.5 of Calculation PM-1077.

Based on the information provided in this response, the CR dose analysis includes the infiltration from the adjacent radwaste building during and following the MCREV system delay as per RG 1.183, Section 4.1.2. The limiting infiltration X/Qs are used in the analysis.

NRC Question 6 (AADB RAI 6)

In Section 4.4.3 of the submittal, Exelon determined that, 'A drop over the reactorwell is more limiting than accidents in the spent fuel pool." Provide the reference or detail that shows the drop in the well or as describedin the Peach Bottom final safety analysis report (FSAR), "adrop onto the reactorcore from the maximum height allowed by the refueling equipment," is the limiting accident (See Regulatory Position2.4 of RG 1.183).

Response

Attachment F of Calculation PM-1 059, Revision 2 provides an assessment that determined a drop over the reactor well is more limiting than accidents in the spent fuel pool. In particular, an assessment of a drop onto the reactor core from the maximum height allowed by refueling equipment is the limiting accident at PBAPS. Attachment F from Calculation PM-1059: a) evaluates water coverage for FHAs over the Reactor Well and over the Spent Fuel Pool; b) evaluates impact of water coverages of less than 23 feet for purposes of pool decontamination factor (DF) determination; and c) justifies that a FHA over the Reactor Well is the limiting event.

NRC Question 7 (AADB RAI 7)

Appendix B of RG 1.183 allows an overall decontaminationfactor of 200, for the FHA if the depth of water above the damaged fuel is 23 feet or greater. If the depth of the water is less than 23 feet, the decontaminationfactor will have to be determined on a case-by-case method as described in Reference B- 1 of RG 1.183. Provide either a detailed analysis that proves the statement in Section 4.3 of the Exelon submittal, 'That a shorterdrop in the fuel pool would result in less radiologicalrelease to the containment," or conservatively adjust the decontaminationfactor used for the FHA to account for water depth less than 23 feet (See Regulatory Position2.4 of RG 1.183 and Regulatory Position2 of Appendix B of RG 1.183).

Response

Attachment F of Calculation PM-1 059, Revision 2, provides an assessment that determined a drop over the reactor well is more limiting than accidents in the spent fuel pool. In particular, an assessment of a drop onto the reactor core from the maximum height allowed by refueling equipment is the limiting accident at PBAPS. Attachment F from Calculation PM-1059: a) evaluates water coverage for FHAs over the Reactor Well and over the Spent Fuel Pool; b) evaluates impact of water coverages of less than 23 feet for purposes of pool DF determination; and c) justifies that a FHA over the Reactor Well is the limiting event.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 5 NRC Question 8 (AADB RAI 8)

For the LOCA analysis as described in Sections 4.3.11 and 4.3.12, Exelon assumed that the main steam isolation valve (MSIV) leakage source term would have a naturalremoval efficiency of 50%

for elemental iodine in each steam line volume. In addition, Exelon calculated the main steam rate constant (As) for different piping segments in the MSIV leakage releasepaths using the 40th percentile aerosolsettling velocity. The licensee stated that both assumptions are derived from the Accident Evaluation Report (AEB) 98-03, 'Assessment of RadiologicalConsequences for the Perry Pilot Plant Application Using the Revised (NUREG- 1465) Source Term."

In RIS 2006-04, "ExperienceWith Implementation Of Alternative Source Terms," the NRC stated that, "Forcalculationof aerosol settling velocity in the main steamline (MSL) piping of boiling water reactors,some LARs reference AEB 98-03. This is acceptable. However, it is important to note that the report was written based on the parametersof a particularplant and, therefore, the removal rate constant is specific to that plant. Any licensee who chooses to reference these AEB 98-03 assumptions should provide appropriatejustification that the assumptions are applicable to their particulardesign." The RIS further states that, "depositionis strongly dependent upon the thermal and hydraulic conditions in the piping. Given the large uncertaintyassociatedwith iodine behavior in piping, deposition of gaseous iodine in piping should be omitted unless appropriate justification is provided (includingproviding estimates of the thermal and hydraulic conditions in the piping)."

In accordance with the guidance in RIS 2006-04, the NRC staff requests that the licensee provide detailedjustification for crediting aerosoldeposition removal assumptions for Peach Bottom. In this justification, include the analysis methods that Exelon used to validate the assumptions of AEB 98-03 cited in its amendment application.

Response

Elemental Iodine Removal:

Gaseous iodine tends to deposit on the piping surface by chemical adsorption. Since elemental iodine is the most reactive, it has the highest deposition rate. The iodine deposited on the surface undergoes both physical and chemical changes and can be re-emitted as an airborne gas (re-suspension) or permanently fixed to the surface (fixation). The RG 1.183, Appendix A, Section 6.5 indicates that Reference A-9 provides acceptable models for deposition of iodine on the pipe surface. Reference A-9 of RG 1.183 uses the following equation to determine the elemental iodine deposition velocity:

pei = elemental iodine vapor deposition velocity (cm/s)

= e(2 809Tr- 12.80 (+/- 0.33))

Where T = gas temperature (°K)

This equation is the same as equation 30 in the Bixler Model addressed in the RADTRAD3.02 Code Manual (page 212):

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 6 280 9

• ei = e( /r - 12.5)

The post-LOCA drywell temperature is 280°F (Design Input 5.3.1.9). Assuming that the MSIV leakage gas temPerature is the same as the drywell temperature:

T = [(280°F - 32 F) x 5/9] + 273 = 410.780 K Solving for the elemental iodine vapor deposition velocity:

exponential term = (2809/T - 12.5) = (2809/410.78 - 12.5) = -5.66 Ni = e-56 6 = 0.003483 cm/s = 0.0001143 ft/s When considering the intact main steam pipe header between the RPV nozzle and the outboard MSIV, the elemental iodine removal efficiency is calculated as follows:

Volume of header (Vi) (Calculation PM-1077, 3

Sections 7.3.1.3.1, 7.3.1.3.2, and Table 3A) 3 Vi = 305.12 ft3 + 66.05 ft = 371.17 ft Inner surface area of intact main steam pipe header between the RPV nozzle and the outboard MSIV (A,) based on line length (L) (Calculation PM-1077, Sections 7.3.1.3.1, and 7.3.1.3.2, and Table 3A)

L = 1.79' + 3.4' + 32.85' + 11.68' + 3.4' + 15.33' + 3.4' + 14.02' + 3.4' + 3.4' + 6.79' + 21.53' L = 121.17' Inner surface area for elemental iodine adsorption (elemental iodine is adsorbed on the entire piping surface area regardless of its orientation) 2 Ai = icx D x L = 3.14 x 1.977' x 121.17' = 752.20 ft Elemental iodine adsorption rate Xei = [(p, x A,) / Vi] x 3600 s/hr Xei = [(0.0001143 ft/s x 752.20 ft2) / 371.17 ft3] x 3600 s/hr = 0.83 hr 1 Elemental iodine removal efficiency liei = 1 - e ei = 1 - e 0 83 = 1 - 0.436 = 0.564 or 56.4%, which is greater than the 50.0% (i.e., DF of 2) used in the analysis based on the NRC staff recommendation in the AEB 98-03, Appendix B, page B-3. This elemental iodine removal efficiency is negligibly reduced due to re-suspension of the elemental iodine, which further gets adsorbed on the piping surface during its migration through the main steam piping. It should be noted that the elemental iodine removal efficiency is calculated using the maximum post-LOCA gas temperature, which will be substantially reduced in a short time due to the continuous cooling of the drywell atmosphere and consequently, it further increases the elemental iodine adsorption velocity and removal efficiency.

Based on the derivation for plant-specific elemental iodine removal efficiency in the above section, it is concluded that the use of the elemental iodine removal efficiency of 50% is conservative.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 7 Aerosol Deposition:

The aerosol deposition model in the analysis uses the following information from Appendix A of the AEB 98-03 Report:

1. 4 0 th percentile aerosol settling velocity of 0.00081 m/sec.

2. Use of Equations (2), (3), and (4) from Appendix A to calculate the rate constant for settling (k,) and equivalent aerosol removal filter efficiency.

As discussed in AEB 98-03, Appendix A, the settling velocity in the well-mixed volume is mainly a function of aerosol density, aerosol diameter, and shape factor having some uncertainty.

Therefore, a Monte Carlo analysis was performed by the NRC to determine the distribution of aerosol settling velocities for the main steam line during in-vessel phase using the ranges and distributions of aerosol density, diameter, and shape factor. The results of the AEB 99-03 Monte Carlo analysis are listed as follows:

Percentile Settling Velocity Removal Rate us (m/sec) Constant (hr-)

60th (average) 0.00148 11.43 50th (median) 0.00117 9.04 4 0 th 0.00081 6.26 1 0 th 0.00021 1.62 For the given well-mixed volume and shape factor, the settling velocity is mainly dependent on the aerosol density and diameter. As can be seen from the above table, the settling velocity gradually increases with the denser and coarser aerosol particles producing a higher gravitational deposition.

Per AEB 98-03 (page 11), the NRC also concludes that the use of the 1 0 th percentile settling velocity with a well-mixed model is not appropriate because the model did not include the mechanisms such as the thermophoresis, diffusiophoresis, and flow irregularities including the hygroscopicity, which contribute to the additional deposition. Given the conservatism of the well-mixed model, the NRC believed it was acceptable to utilize median settling velocity values (as compared to more conservative values) for deposition parameter.

The settling velocity percentile distribution is derived using the uncertainty ranges associated with the key variables that constitute the settling velocity. The settling velocity percentile distribution is not dependent on any piping configuration or plant-specific thermal hydraulic condition. Therefore, its use is considered acceptable, as consistently accepted by the NRC in the previous Exelon AST license amendments for Clinton, Dresden, Units 2 and 3, Limerick, Units 1 and 2, Quad Cities, Units 1 and 2, and other AST license amendments (e.g., Fermi Unit 2). Only elemental iodine removal depends on the thermal condition inside the main steam pipe, which is discussed in the previous section for derivation of the elemental iodine removal efficiency. The aerosol iodine deposition is driven by the gravitation force. Despite the NRC recommendation of using the 5 0 th percentile settling velocity, Exelon conservatively used the 4 0 th percentile settling velocity in the analysis to minimize the aerosol deposition.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 8 The 4 0 th settling velocity is used with the PBAPS plant-specific projected pipe surface areas and volumes of various horizontal pipe segments to determine the values of rate constants for settling (Xs) in Table 5, which are less than the 6.26 hr 1 removal rate constant derived in AEB 98-03 using the Perry plant-specific piping parameters. The projected surface areas and volumes are calculated in Calculation PM-1077 Sections 7.3.1 and 7.3.2 for Unit 2 and Unit 3, respectively, using the as-built piping isometric drawings and listed in Calculation PM-1077 Tables 3 through 5.

Based on the above clarification, it is demonstrated that the removal rate constants in Table 5 are derived using the PBAPS as-built plant-specific parameters.

The aerosol deposition is driven by the natural gravitational force acting on any particle having size and weight. As shown in the AEB 98-03 Equation (5) and as discussed in AEB 98-03, Appendix A, Page A-3, the gravitational aerosol deposition is mainly a function of the aerosol density and diameter for a uniform distribution of the aerosol in a well-mixed volume. The variables in Equation (5) for the settling velocity neither show dependency on thermal condition nor hydraulic condition. It is purely a function of a physical condition that exists in a well-mixed volume under the influence of natural gravitational force. The lower end of settling velocity represents the lightly packed fine aerosol particles with lighter weights, which tend to be less affected by the gravitational force with a smaller removal rate. The upper end of settling velocity represents the highly packed heavier aerosol particles, which tend to be more affected by the gravitational force with a large removal rate. The use of the 4 0 th percentile settling velocity indicates that the MSIV leakage is packed largely with finer aerosol particles than heavier particles, which tends to reduce the aerosol deposition and therefore is conservative.

The volumetric flow rates of MSIV leakage for different time intervals are calculated in Calculation PM-1077 Section 7.2. Knowing the rate constants for settling (ks), volumetric MSIV leak rates, and horizontal piping volumes, the time dependent aerosol (particulate) removal efficiencies are calculated using Equations (3) and (4) of AEB 98-03 in Calculation PM-1 077 Section 7.4 and listed in Calculation PM-1 077 Table 6.

As stated in AEB 98-03, page 11, the well-mixed volume model is inherently conservative because it does not account for many other removal mechanisms that contribute additional deposition of the aerosol. Exelon incorporated the following analytical conservatisms in the analysis:

1. The reactor building (RB) drawdown time is assumed to be 3 minutes instead of the 2 minutes (120 seconds) currently allowed by PBAPS Technical Specification Surveillance Requirement 3.6.1.4.3 (Calculation PM-1077, Figure 2)

2. The containment and ESF leakages are assumed to release directly to the environment at ground level without crediting the SGTS filtration during the drawdown time and through the main stack following the drawdown time without mixing in the RB volume (Calculation PM-1077 Figure 2)

3. The MSIV leakage model includes the following conservatisms:

• Each MSIV release path consists of two well-mixed volume nodes consistent with AEB 98-03 to eliminate the in-series configuration of the aerosol and elemental iodine removal efficiencies in the multiple volume nodes, which is believed to underestimate the resulting dose.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 9

• The aerosol and elemental iodine removal is not credited in any MSIV steam lines 96 hrs after the onset of a LOCA.

" Aerosol and elemental iodine removal is not credited in the MSIV failed line between the reactor pressure vessel (RPV) nozzle and outboard MSIV for the entire duration of a LOCA (refer to response RAI 9(a) for the resulting conservative CR dose).

• The total MSIV leakage is distributed between two worst-case steam lines instead of four lines for the purposes of this analysis.

4. The Main Control Room Emergency Ventilation (MCREV) system initiation is delayed for 30 minutes after onset of a LOCA for all release paths, and a maximum CR unfiltered inleakage of 18,500 cfm is assumed during the initial 0-30 minutes of the LOCA based on the result of a parametric study plotted in Calculation PM-1077 Figure 1.

Based on the technical justification provided in the above section, which already exists in Calculation PM-1 077, Exelon believes that the aerosol deposition model in the analysis for the MSIV leakage path is technically appropriate and complies with the guidance in RG 1.183, Section 6.5 and AEB 98-03 in a very conservative manner.

NRC Question 9 (AADB RAI 9)

As part of attachment 8 of the July 13, 2007 AST license amendment request (LAR), Exelon provided the AST LOCA Calculation for Peach Bottom (No. PM-1077). On page 13 of the calculation, Exelon states, 'A main steam line break in one steam line inside the drywell would maximize the dose contribution from the MSIV leakage."

Unlike AEB 98-03, Peach Bottom Calculation No. PM- 1077 takes various forms of credit for the piping up to both inboardMSIVs. For the first line modeled (for the purpose of this discussion called SL-A), Peach Bottom credits holdup and dilution for volume V11. Forthe second line modeled (for the purpose of this discussion called SL-B) Peach Bottom credits holdup, dilution and deposition and plateout for volume V21.

a) The NRC staff requests that the licensee provide justification for crediting holdup and dilution in inboardsection of the failed steamline (SL-A), consideringthat the most limiting failure occursjust prior to the inboardMSIV and that this piping will no longer be connected to the steamline.

b) The NRC staff requests that the licensee provide justification for aerosoland elemental deposition in the inboardpiping of SL-B, noting that the methodology applied from AEB 98-03 assumed a quiescent environment where the only forces acting on the aerosol were due to gravitationalsettling.

Response

Section 2.3.3 of Calculation PM-1077 provides reasons why a LOCA through the main steam line break is not a credible event based on the definition of a large break LOCA in 10CFR50, Appendix A and based on the LOCA being the design basis event for the safety-related system design per

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 10 PBAPS UFSAR Section 6.2. The LOCA through a breach in the main steam line is a less limiting event because it does not impose the maximum challenge to the drywell pressure boundary (resulting in considerably less MSIV leakage) and because it does not impose the maximum challenge to fuel integrity in the entire core (resulting in a very small source term release). The steam lines are ASME Category I piping, which further exclude the postulation of a break in the piping in the inboard and outboard MSIV areas. Based on the above facts, the break in the steam lines inside the drywell is not credible during a LOCA. The postulating of a steam line break during a LOCA increases the resulting MSIV leakage dose. The concept of main steam line break in the MSIV failed line is incorporated in the LOCA analysis as discussed in the following section.

Response To AADB RAI 9(a):

The PBAPS AST MSIV leakage model is identical to the AEB 98-03 MSIV leakage model, with aerosol depositions in the MSIV failed and intact main steam lines calculated based on the horizontal projected piping surface areas and volumes using the PBAPS plant-specific piping configuration. The comparison of both models is shown in Table A below with the resulting PBAPS CR dose of 3.11 Rem TEDE. As discussed in Section 2.3.3 of Calculation PM-1077, although a break in the steam lines inside the drywell is not credible during a LOCA, the concept of a main steam line break is analytically incorporated just to add additional conservatism in the MSIV leakage model, without physically breaking the steam line.

Table B below documents a sensitivity evaluation in which the PBAPS MSIV leakage model neither postulates the break in main steam line segment between the RPV nozzle and outboard MSIV in the MSIV-failed release path nor credits the removal of the aerosol and elemental iodine in that pipe segment. The AEB 98-03 MSIV leakage model in Table B is the same as that in Table A below. The differences between Tables A and B (PBAPS MSIV leakage path models) are shown in Table B using a bold and italic font style with the resulting PBAPS CR dose of 4.36 Rem TEDE.

This dose is 1.25 Rem TEDE higher than the PBAPS MSIV leakage path when it is modeled and is identical to the AEB 98-03 model, as shown in Table A. Despite the differences in the modeling techniques, the MSIV leakage path modeled in the PBAPS LOCA analysis in Calculation PM-1077 is grossly conservative.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 11 Table A Peach Bottom Plant-specific MSIV Leakage Model - 100% Compliance With AEB 98-03 Methodology AEB 98-03 Peach Bottom AST Analysis - Parametric Study MSIV Failed Line Intact Line MSIV Failed Line Intact Line Variable RPV To Between RPV To Between RPV To Between Between RPV To Between Between Parameter Inboard Inboard & Inboard Inboard & Inboard Inboard & Inboard Inboard Inboard & Inboard MS1V Outboard MSIV Outboard MSIV Outboard MSIV & MSIV Outboard MSIV &

MSIVs MSIVs MSIVs TSV MSIVs TSV Ruptured - Remains Remains Remains Ruptured - Remains Remains Remains Remains Remains Assumed Intact Intact Intact Intact Intact Intact Intact Intact in analysis in analysis Aerosol Deposon CetNot Credited Credited Credited Not Credited Credited Credited Credited Credited Credited Deposition Credited Pipig Piping Voume Volume Credited Not Credited Credited Credited Not Credited Credited Credited Credited Credited Credited Not Not Not Not Not Holdup Time Credited Credited Not Credited Not Credited Credited Credited redited Credited Not Credited Credited Credited Deposition Velocity 40th Percentile 40th Percentile Distribution Elemental Iodine Not Credited Credited Credited Credited Credited Credited Credited Credited Not Credited 0) Ceie Removal Credited (50%) (50%) (50%) (50%) (50%) (50%) (50%) (50%)

CR Dose Not Provided 3.11 Rem TEDE Perry plant does not have the seismically supported main steam line beyond the outboard MS1V. Therefore, unlike the Peach Bottom Plant, the main steam line between the outboard MSIV and TSV is not modeled.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 12 Table B Peach Bottom Plant-specific MSIV Leakage Model - Used In Licensing Basis AST LOCA Analysis AEB 98-03 PBAPS Plant-specific Licensing Basis AST LOCA Analysis MSIV Failed Line Intact Line MSIV Failed Line Intact Line Variable RPV To Between RPV To Between RPV To Between Between RPV To Between Between Parameter Inboard Inboard & Inboard Inboard & Inboard Inboard & Inboard Inboard Inboard & Inboard MSIV Outboard MSIV Outboard MSIV Outboard MSIV & MSIV Outboard MSIV &

MSIVs MSIVs MSIVs TSV MSIVs TSV Piping Integrity Ruptured - Remains Remains Remains Remains Remains Remains Remains Remains Remains Assumed not credited Intact Intact Intact Intact* Intact Intact Intact Intact Intact in analysis Aerosol Deposon CetNot Credited Credited Credited Not Credited Not Credited Credited Credited Credited Credited Deposition Credited Not Piping Volume Credited Credited Credited Credited Credited Credited Credited Credited Credited Credited Not NotNoNt Not Nt Not Holdup Time Credited Credited Not Credited Not Credited Not Credited Not Credited Not NNoCredited Holdupe TimeCreiteeNo Credited Credited Credited Deposition Velocity 40th Percentile 40th Percentile Distribution Elemental Iodine Not Credited Credited Credited Credited Credited Credited Credited Removal Credited (50%) (50%) (50%) (50%) (50%) (50%) (50%)

CR Dose Not Provided 4.36 Rem TEDE

• The Peach Bottom licensing basis AST LOCA analysis neither postulates the rupture of the main steam line between the RPV nozzle and outboard MSIV nor credits the deposition of aerosol and removal of elemental iodine in that line, which produces approximately 1.25 Rem TEDE additional dose to CR operator, proving that the PBAPS MSIV leakage model is conservative in comparison to the AEB 98-03 MSIV leakage model.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 13 Response To AADB RAI 9(b):

Only one single failure is required to be postulated for a given release path. Therefore, the intact main steam line takes credit for elemental and aerosol iodine removal in well-mixed volume V2 (V2

= V21 + V22), which consists of the second shortest piping segment between the RPV nozzle and outboard MSIV as shown in Calculation PM-1077 Table 6. The additional analytical conservatism is not applied to this well-mixed volume. As discussed in the response to AADB RAI9(a), the aerosol deposition credited in all main steam pipe segments complies with the regulatory guidance in RG 1.183, Appendix A, Section 6.5 and AEB 98-03 in a very conservative manner. Based on the clarification that only one single failure is required to be postulated for the MSIV leakage release, the modeling of intact steam line between the RPV nozzle and outboard MSIV is technically correct.

NRC Question 10 (AADB RAI 10)

On page 12 of Peach Bottom Calculation No. PM-1077, Exelon states, "To account for the assumed mixing between the wetwell and drywell after 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and the resultingactivity dilution, the flow rate through the MSIVs is reduced by the ratio of the drywell volume to the total volume at two hours."

Explain in detail how this assumption was used in the MSIV leak rate calculationsfor Peach Bottom and any deviation from regulatoryposition 6.2 of Appendix A of RG 1.183.

Response

The activity in the MSIV leakage paths is the same as the activity released inside the drywell during a LOCA. During the first two hours of a LOCA the gap and early-in-vessel phase activity released from the core is conservatively assumed to distribute in the drywell air volume only. Two hours after onset of a LOCA, the non-condensable gases buildup in the suppression chamber air space purges into the drywell air space via continuously opened vacuum breakers based on the setpoint of 0.2 psid. The drywell and suppression chamber air spaces reach an equilibrium condition. It is assumed that two hours after a LOCA the activity in the drywell is uniformly distributed in the combined drywell plus suppression chamber air volumes. This provides the dilution of activity released through the containment and MSIV leakage paths. This dilution is conservatively not accounted for in the containment leakage release but it is incorporated in the MSIV leakage release by reducing the MSIV leakage by the ratio of the drywell volume to the total volume to incorporate the dilution of drywell activity 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> after a LOCA as shown in Section 7.2.3 and Table 7 of Calculation PM-1 077. The NRC in previous Exelon AST license amendments, and other non-Exelon license amendment (e.g., Fermi Unit 2), accepted the uniform distribution of activity among the drywell and suppression chamber air spaces 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> after onset of a LOCA.

As required by RG 1.183, Appendix A, Section 6.2, a site-specific analysis was performed to determine the reduction in primary containment leakage based on the post-LOCA containment pressure in Reference 9.17 of Calculation PM-1077. It was determined that the containment and MSIV leakages can be reduced to 50% of the technical specifications leak rate 38 hours4.398148e-4 days <br />0.0106 hours <br />6.283069e-5 weeks <br />1.4459e-5 months <br /> after the

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 14 onset of a LOCA. The reduction in the MSIV leak rate is calculated in Calculation PM-1 077 Section 7.2.4, as listed in Table 7, and incorporated in the RADTRAD input file.

Based on the above discussion, the MSIV leakage is appropriately reduced to comply with the RG 1.183, Appendix A, Section 6.2 requirement.

NRC Question 11 (AADB RAI 11)

For the LOCA analysis described in Section 4.3.3, Exelon credits elemental iodine removal by wall deposition on wetted surfaces inside containment. Provide the basis for creditingiodine removal without crediting containment sprays for Peach Bottom.

Response

The gaseous elemental iodine tends to deposit on any surface by chemical adsorption. On the wetted surface area, the gaseous elemental is removed quickly because it is dissolved in water and chemically adsorbed on the surface area. The various exposed surfaces in the drywell get wet during a LOCA due to depressurization of a large amount of reactor coolant that immediately flashes into steam. As the accident progresses, the release through the break becomes a two phase flow mixture of steam and water, and at a later time it becomes a saturated liquid. The moisture released during and following a LOCA is continuously condensed on the relatively colder surfaces including but not limited to the drywell wall, floor, and ceiling concrete surfaces, various piping surfaces, duct and equipment surfaces, and Torus water surface. The drywell spray is not credited in the analysis; therefore, the resulting additional wetted surface area due to the drywell spray operation is not accounted for in the wetted surface estimate in Calculation PM-1 077 Section 7.7. The estimated wetted surface area is conservatively reduced by 25% and compared with the corresponding wetted surface areas of Exelon's other BWR Mark I plants, Dresden and Quad Cities, to establish a conservative basis for the selection of its value. The elemental iodine removal in the MSIV leakage follows the similar adsorption mechanism as that in the drywell with an exception that a large amount of the gaseous elemental iodine in the drywell is dissolved on the wetted surface and removed from the drywell atmosphere while all elemental iodine is removed by adsorption on the pipe surface area. The elemental iodine vapor deposition velocity and adsorption rate constant pel (ft/sec) and Xei (hr-') for the MSIV leakage (refer to response to RAI 8) and mass-transfer coefficient and first order removal coefficient Kw (meter/hr) and X;w (hr 1 ) for the drywell atmosphere are technically analogous to each other and perform the same function of removal of the elemental iodine via different removal mechanisms.

Based on the technical justification provided in the above discussion, the elemental iodine removal mechanism by the wetted drywell surface areas without crediting operation of the drywell spray is technically adequate and accepted by the NRC staff in the previous AST license amendments including the Dresden and Quad Cities AST license amendments.

NRC Question 12 (AADB RAI 12)

As shown on Sheet 1 of both Attachments A and B of Peach Bottom CalculationNo. PM-1055, Revision 0, (PM-1055), Attachment 8 to the July 13, 2007 AST LAR, topography near the Peach

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 15 Bottom site is complex. The facility is located on the shore of the Susquehanna River adjacent to a bluff. The licensee postulated effluent releases from multiple locations, including from short stacks on top of facility structures, locations at or near ground level at the facility, and from the 152 meter off-gas stack on the bluff The licensee used meteorologicaldata from three towers to generate atmosphericdispersion factors (x/Q values), namely from the River Tower based in the Susquehanna River, Tower 1A near the shore in the vicinity of the Peach Bottom facility structures, and Tower 2 on the bluff. Table 2-2 on page 7 and Table 3-4 on page 13 of PM- 1055 list which data were used to model x/Q values for each postulatedrelease location. In some cases, two sets of data were used to generatex/Q values for a single release/receptorpair and the limiting x/Q values were selected for use in the dose assessment.

Page 13 of PM-1055 states that the Peach Bottom Reactor Building (RB) stack exclusion area boundary(EAB) x/Q values were generatedusing meteorologicaldata from the River Tower. Both the EAB and low populationzone (LPZ) values were generatedusing meteorological data from Tower 2. The licensee apparentlydid not generate LPZX/Q values using data from the River Tower noting that those data measuredlocal conditions that are likely not representativeof conditions at the LPZ. While this may be the case, given that the initialeffluent dispersion would occur in the river valley environment near the Peach Bottom facility, how was it determined that use of meteorologicaldata from Tower 2 only would be adequate to generate the LPZX/Q values?

Page 59 of Attachment 1 to the LAR states that the RB stack EAB and LPZX/Q values are consideredapplicable for postulated releases from the personnelaccess door, railway bay door, reactorbuilding scuttle, and ground level hatch. The personnel access door, railway bay door, and ground level hatch appeartobe at a height more nearly representativeof the height of measurements on Tower 1A. Please provide further detailedjustification that the RB stack EAB and LPZX/Q values are adequatelyrepresentative of releases from these locations.

Response

The River Tower and Tower 1A meteorological data were not utilized for the LPZ X/Q analysis of the RB Units 2 and 3 stacks in Calculation PM-1055. The RB stack tops are at 305 ft msl, essentially above the Valley's meteorological influences. As discussed in Calculation PM-1055, Section 3.2.4.2, and depicted in Calculation PM-1 055 Attachment B, the RB stack tops at 305 ft msl are vertically much nearer the Tower 2 grade elevation of 367 ft msl than the River at 116 ft msl. Accordingly, the wind direction at the Tower 2 location, only about 500 feet south-southwest of the RB Units 2 and 3 would also correspond much better with wind flow at the RB stack tops than the River Tower (or Tower 1A). Unlike the area within the 823-meter radius EAB, for much of which the elevation is at or near river level, the great majority of area within the 7300-meter radius LPZ is well above the River.

As such, neither the winds from the River Tower or Tower 1A, nor the stability class from Tower 1A would well represent the conditions for which maximum X/Q at the LPZ would be expected to occur. The basis for applying the River Tower wind data and Tower 1A stability data for the EAB X/Q analysis in Calculation PM-1055 properly takes into account the non-elevated release assumption required by RG 1.145, implying the potential for building-enhanced plume spread (which relative effect on X/Q is as inverse function of downwind distance) and thus for such a

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 16 condition to occur in the Valley in the immediate vicinity of the Station. This effect would be insignificant at the LPZ distance, and not associated with its maximum predicted X/Q. For the above reasons Tower 2 meteorological data were determined to be representative for this analysis of LPZ X/Qs.

While the Tower 2 based ground level release EAB X/Q result would also be considered applicable for releases from the Reactor Building TB/RB Vent Stack and the Roof Scuttle, this value is not used. All Reactor Building release pathways, whether at the roof elevation, or near plant grade (personnelaccess door, railway bay door, and ground level hatches)were evaluated using the River Tower wind data and Tower 1 A stability data for the EAB since no stability data is measured at the River Tower. This applies to the FHA, CRDA, and LOCA analyses. MSLB analysis uses a more conservative Regulatory Guide 1.5 approach.

NRC Question 13 (AADB RAI 13)

Joint wind speed, wind direction and atmosphericstability distributions(JFDs)provided in Attachment J and used in the PA VAN calculations group the meteorological data into wind speed categoriesof 0.5, 3.5, 7.5, 12.5, 18.5, 20 and 55 miles per hour based upon RG 1.23, Revision 0, "OnsiteMeteorological Programs,"February 1972. NRC staff notes that use of these categories results in much of the Peach Bottom data being clustered into only a few wind speed classes in some of the JFDs (e.g., page 1169). Data clustering may skew the distribution of calculatedx/Q values. Therefore, NRC Regulatory Issue Summary (RIS) 2006-04, "Experience with Implementation of Alternative Source Terms," March 7, 2006, and RG 1.23, Revision 1, "MeteorologicalMonitoring Programsfor Nuclear Power Plants," March 2007, recommend that JFDs have a large number of wind speed categoriesat the lower wind speeds in order to produce the best results. Suggested categoriesare calm, 0.5, 0.75, 1.0, 1.25, 1.5, 2.0, 3.0, 4.0, 5.0, 6.0, 8.0 and 10.0 meters per second. Please provide information to show that the use of the RG 1.23, Revision 0, wind speed categorieshas not biased the resultantx/Q value distributions. However, if the resultantx/Q value distributionshave been biased, then provide information that demonstrates that the x/Q values generated using the RG 1.23, Rev. 0, wind speed categoriesare more limiting than those generated using a large number of wind speed categoriesat the lower wind speeds.

Response

The joint wind speed, wind direction, atmospheric stability frequency distributions (JFDs) used by PAVAN in generating the X/Q values provided in Calculation PM-1 055 were evaluated with the 11 wind speed categories, in accordance with RG 1.23, Revision 1, as shown in Attachment A, Sheet 3 of 6; and also shown for comparison are the 7 wind speed categories according to RG 1.23, Revision 0. Attachment B contains the JFDs for the 11 wind speed categories.

The revised JFDs were then used to re-calculate the X/Q values for each release-receptor scenario previously run with the RG1.23, Revision 0 JFDs. As Attachment A, Sheets 1, 2, and 4 illustrate for each scenario, the 11-bin JFDs resulted in slightly increased X/Q values for each time-averaging period.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 17 The table provided in Attachment A, Sheet 5 of 6 presents the higher of the RG 1.23, Revision 0 and RG 1.23 Revision 1 PAVAN results for the Off-Gas Stack to Control Room Intake Scenario.

Also presented are the ARCON96 X/Q results for the same scenario as taken from Calculation PM-1055. The PAVAN results are used in conjunction with the ARCON96 results to produce the final Off-Gas Stack to Control Room Intake X/Q values according to the methodology in RG 1.194, Section 3.2.2.

Attachment A, Sheet 6 of 6 presents a revision to Table 4-1 of Calculation PM-1 055, as updated to indicate the higher X/Q values resulting from the additional PAVAN analyses produced in response to AADB RAI 13.

Attachment C contains the PAVAN input and summary output pages associated with each scenario.

Since the 11-bin X/Q results are slightly higher than the 7-bin results and the fact that the calculated doses are substantially lower than regulatory limits, Exelon will evaluate the need to calculate the resulting new dose consequences using the 11-bin X/Qs upon performance of the next dose calculation revision.

NRC Question 14 (AADB RAI 14)

The LAR providedx/Q values for postulatedreleases from the reactorbuilding (RB) stack, main steam line, personnel access door, railway bay door, reactorbuilding scuttle, ground level hatch, and off-gas stack to the control room airintake, EAB and LPZ. The licensee used the x/Q values as inputs to dose assessments for the LOCA, CRDA, MSLB, and FHA design basis accidents.

RG 1.183 states that the single active component failure that results in the most limiting radiologicalconsequences should be assumed. Assumptions regardingthe occurrenceand timing of a loss of offsite power should be selected with the objective of maximizing the postulated radiological consequences. Please confirm that the locations identified above are the limiting release/receptorpairs for all design basis accidentscenarios, including those postulatedto involve loss of offsite power or other single failures.

Response

Releases from openings in secondary containment were considered and evaluated as indicated for postulated releases from the reactor building (RB) stack, main steam line, personnel access door, railway bay door, reactor building scuttle, ground level hatch, and off-gas stack. These release points were evaluated with respect to the control room air intake, EAB and LPZ. Plant walk-downs and reviews of plant general arrangement and layout drawings were performed to ensure that X/Qs for the most limiting of the release locations identified were analyzed. The most limiting X/Q values associated with these openings were utilized in the appropriate radiological dose analyses. No credit is taken for the loss of offsite power if it is beneficial. No accident was determined to be aggravated by the presence or loss of offsite power. The mitigative systems credited have been determined to be single-failure proof and powered by emergency power systems. Specifically, for each accident:

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 18 LOCA: The presence or loss of offsite power would not adversely impact the postulated release to containment, the release mechanism from containment, or the behavior of credited mitigative systems.

FHA: The availability of offsite power would not adversely impact the release from the spent fuel pool or release from the refuel floor airspace to the environment. Control room dose modeling with an artificial one air change per minute envelopes all possible control room ventilation and related power supply conditions.

MSLB: The analysis of this event does not take credit for the presence of offsite power or the lack thereof. The sole plant feature credited is the MSIV closure instrumentation, whose loss would result in valve closure. Control room dose modeling with an artificial one air change per minute envelopes all possible control room ventilation and related power supply conditions.

CRDA: Two CRDA scenarios are addressed. The path associated with the 1%/day release from the condenser is passive and requires no power. The path through the offgas system assumes offsite power availability. Loss of offsite power for this path would either revert to the first path, or would trap release activity in the charcoal delay beds, providing additional uncredited delay.

NRC Question 15 (AADB RAI 15)

Page 74 of Attachment 1 to the LAR states, "As calculated in the PA VAN run, at the conservatively assumed 823 meter EAB distance ay is 38.3..." for Pasquillstability class F. However, NRC staff notes that a printout from a PA VAN run, page 1199 of PM-1055, lists a uy value of 31.0 meters which can also be estimated from Figure 1 of RG 1.145, 'Atmospheric DispersionModels for PotentialAccident Consequence Assessments at Nuclear Power Plants." Therefore, please justify use of 38.3 meters for the uy value or provide a revision to this calculation.

Response

As requested, the calculation has been revised. As shown in the revised MSLB Calculation PM-1058 Revision 1, attached in this enclosure, the calculated EAB dose increases proportionately to the ratio of the ay values noted; i.e. 38.3 m/ 31.0 m = 1.24, and the calculated dose increases from the Case 2 (Iodine spike) 1.60 rem TEDE value to a still quite acceptable 1.97 rem TIEDE value, remaining well-below the Regulatory Guide 1.183 TEDE acceptance limit of 6.3 rem TEDE.

NRC Question 16 (AADB RAI 16)

Sheet 4 of 5 of Attachment H to PM-1055 is a JFD that shows a total frequency occurrenceof approximately 94.5 percent in the lower right comer of the table. Sheets 1-3 and 5 of Attachment H which provide similarJFDs for other meteorologicaldata each total 100 percent. Why is the total on Sheet 4 less than 100 percent and what is the significance?

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 19

Response

The JFD contained on Sheet 4 of 5 of Attachment H to Calculation PM-1055 has been corrected and is included herein as Attachment D. This error was editorial in nature and did not impact the X/Q calculations.

NRC Question 17 (AADB RAI 17)

NRC staff notes that there appears to be some duplication of pages in Attachment J to the LAR.

Forexample, summary pages 1228 and 1353 appearto be identical, as are pages 1285 and 1410.

Pleasereview the information in Attachment J and confirm that all relevantpages were included or provide supplementarypages, if appropriate.

Response

Attachment J to Calculation PM-1055 includes information that was inadvertently duplicated.

The PAVAN output information contained on pages 1228 through 1285 was duplicated on pages 1353 through 1410. However, no information was omitted and all pertinent documentation was provided.

NRC Question 18 (AADB RAI 18)

Figure 3-1 of Attachment G to CalculationNo. PM- 1055, Revision 2, is a plant plan showing postulatedsource and receptor locations. What is the scale of this figure? NRC staff had some difficulty regardingthe clarity of the figure. Therefore, please provide anothercopy that more clearly highlights the locations of the sources and receptors.

Response

Figure 3-1 of Attachment G, which depicts the postulated source and receptor locations, is part of Calculation PM-1059, Revision 2. To address the NRC's request, refer to Figures 1 and 2 in this response, which more clearly highlight the source and receptor locations. Figure 1 is the general arrangement plan for the 135-foot elevation at PBAPS and Figure 2 is a floor plan for the 135-foot elevation. The figures are not to scale since they are reduced copies, but dimensions are depicted for reference purposes.

NRC Question 19 (AADB RAI 19)

In RIS 2006-04, the NRC advised licensees on the implementation of alternativesource terms (ASTs) in design basis accident (DBA) radiologicalanalyses of currently licensed light water reactors. In order to enhance the efficiency and potentially the timeliness of completing our review, the NRC staff requests a RIS Summary 2006-04 conformance table.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 20

Response

As requested, Table 5 in this response includes information concerning conformance to the guidance specified in Regulatory Issue Summary (RIS) 2006-04, "Experience with Implementation of Alternative Source Terms."

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 21 Table 1 Updated Table 4.3-1 Parameters Applicable to AST Fuel Handling Accident Dose Considerations for Peach Bottom Atomic Power Station Use of new parameters is acceptable per FHA results below the Regulatory Limit as found within previously provided Calculation PM-1059, Revision 2

___:______*_ i ,i:=Updated Table 4.3-1 (FHA Parameters)

Parameter or  : ASTValue Pre-AST and Current RegulatoryBasis and Method __________ Licensingo Basis Comments Reactor Power 3528 MWth 3528 MWth No change. Includes the currently licensed 0.38%

3514 MWth nominal margin for instrument uncertainty relative to the rated thermal power of 3514 MWt after the 1.62% thermal power optimization uprate.

Fuel Assembly 10 x 10 in an 87.33 10 x 10 in an 87.33 No change. Bounding Configuration and fuel pin bundle and fuel pin bundle and current assumptions for properties 172 total pins 172 total pins current PBAPS licensing damaged damaged basis FHA as well as for AST.

Radial Peaking 1.7 1.5 NEW bounding Factor assumption, which is considered conservative.

RG 1.183 justifies this change.

Allowable Fuel RG 1.183, Table 3. N/A NEW per RG 1.183.

Burnup and non- Fuel bundle peak Some peak rod-average LOCA gap fractions burnup will not exceed burnups can exceed 54 62 GWD/MTU. For GWD/MT. However, the fuel exceeding 54 6.3 kW/ft linear heat GWD/MTU, the generation rate limit will maximum linear heat not be exceeded. This generation rate will not data is reviewed for each I exceed 6.3 kW/ft. I cycle.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 22 Updated :Table 4.3-1 (FHA Parameters)

Parameter or AST Value Pre-AST and Current Regulatory Basis and Method Licensing.Basis Comments FHA Radionuclide From the 60 isotopes TID-14844 NEW design basis Inventory forming the RADTRAD analysis used ORIGEN library used in the 2.1 to calculate values.

Loss of Coolant Spent fuel source terms Accident (LOCA) are based on the same analysis, with decay to bounding reactor core 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Gap source terms as were activities are per RG used for the LOCA 1.183. analysis. Use is based on RG 1.183 guidance.

The Radionuclide inventory from the previous analysis was based on TID 14844 assumptions.

Underwater Noble Gases: 1 Noble Gases: 1 NEW, per RG 1.183. For Decontamination conservatism, the Factor Particulate (cesiums Particulates: infinity effective minimum depth and rubidiums): infinity of 23 feet is assumed to be the water coverage Iodine: 200, Iodine: 100 over the reactor core.

corresponding to a 23- This is the worst-case ft water depth for an location for a fuel drop assembly drop into the FHA to take place reactor vessel (significantly more damage is produced than a shorter drop in the fuel pool).

Iodine chemical The chemical form of TID-14844 NEW, per RG 1.183.

distribution radioiodine released Since the pH of the pool from the fuel to the water is not maintained spent fuel pool is above 7, iodine species is assumed to be 95% assumed to be Csl, 4.85% elemental commensurate with iodine, and 0.15% charcoal filtration only organic iodide. 95% where credited. The Csl, instantaneously design basis FHA dissociates in the pool calculation uses only water. All iodine is re- gaseous iodine (no evolved as elemental particulate).

iodine.

Activity Transport to Activity reaching the Puff release with a NEW, per RG 1.183. All the Environment refuel floor airspace two-hour duration (99.9999%) activity is will essentially be all through SGTS. exhausted to the exhausted within 2 environment within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> by using an hours. This also provides artificially high exhaust an allowance for uneven I rate. I mixing in the refuel floor

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 23

________________:.:  ! ; Updated Table 4.3-1 (FHA Parameters) ___________________

.Parameter or AST Value Pre-AST and Current Regulatory Basis and Method Licensing Basis Comments airspace.

Release Pathways Activity reaching the Filtration by SGTS NEW assumption. For refuel floor airspace with elevated release conservatism, no credit is will essentially be all through the Main taken for filtration by the exhausted within 2 Stack. SGTS, or the elevated hours by using an release resulting from artificially high exhaust exhaust through the rate. The release Peach Bottom Main pathways are Stack.

described in Table 4-1.

Dose Conversion EPA Federal ICRP60 Dose NEW, per RG 1.183 Factors Guidance Reports 11 conversion Factors, implemented in and 12 RG 1.109 RADTRAD.

Offsite Dose Limit 6.3 rem TEDE 6.25 rem Whole Body NEW, per 10CFR 50 75 rem Thyroid Appendix A, and RG 1.183.

Control Room Dose 5 rem TEDE for the 5 rem Whole Body, or NEW, Per 10 CFR50 Limit duration of the its equivalent to any Appendix A, GDC 19 and accident part. 10 CFR50.67 CR Volume Volume 176,000 ft" Volume 176,000 ft' No change.

MCREV Operation for MCREV operability is Required. NEW assumption, which release from ground required in order to is considered hatch account for the most conservative per RG limiting grade level 1.183. The assumed 500 hatch plugs that could cfm bounds the tracer be opened during gas test results. Note, movement of the measured tracer gas irradiated fuel that has test value was statistically been irridiated less zero. However, the than 84 hours9.722222e-4 days <br />0.0233 hours <br />1.388889e-4 weeks <br />3.1962e-5 months <br />. 3000 upper tolerance value of cfm -10% filtered uncertainty is assumed intake (sensitivity for conservatism.

analyses show the lower bound of the 10% flow uncertainty is conservative) plus an allowance of 500 cfm for unfiltered I inleakage.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 24

________________ )Updated Table 4.3-1 (FHA Parameters) ___.....______...__

Parameter or AST Value Pre-AST and Current Regulatory Basis and Method Licensing; Basis Comments Refuel Floor An artificial volume of Exhaust flow via NEW assumption, which Ventilation Rate and 100 ft3 with an SGTS is considered Volume artificially high exhaust conservative per RG rate is assumed for 1.183.

simplicity. This evacuates 99.99999%

of all activity within 2-hours.

CR Limiting X/Qs Limiting X/Qs (0 - 2 hr) Current licensing NEW, AST values utilize (0-2 hrs) basis value is not ARCON96 assumptions Personnel Access appropriate with AST per RG 1.194. Values Doors: 1.04E-03 assumptions. used are the highest sec/m 3 values for either Unit 2 or Unit 3 for conservatism.

Railroad Bay Doors:3 4.54E-03 sec/m RB Roof Scuttle:3 1.90E-03 sec/m Ground Level Hatch 3 4:

1.28E-02 sec/m EAB Normal RB exhaust Main exhaust stack NEW assumption, which Release Point Basis stack is considered conservative. Current Limiting Dispersion 4.25E-04 sec/m 3 licensing basis value is Factors (0 - 2 hr) not appropriate with AST assumptions.

LPZ Normal RB exhaust Main exhaust stack NEW assumption, which Release Point Basis stack is considered and conservative. Current 4.81 E-05 sec/m3 licensing basis value is not appropriate with AST Limiting Dispersion assumptions.

Factors (0 - 8 hr)

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 25 Table 2 Updated Table 4.3-1 Parameters Applicable to AST Control Rod Drop Accident Dose Considerations for Peach Bottom Atomic Power Station Use of new parameters is acceptable per Control rod Drop Accident results below the Regulatory Limit as found within previously provided Calculation PM-1057, Revision 1.

______________, _ Updated Table 4.3-1 (CRDAParameters Parameter or 'AST Value Pre-AST and Current Regulatory Basis and Method Licensin*.Basis Comments, Reactor Power 3528 MWth 3528 MWth No change. Includes the currently licensed 0.38%

3514 MWth nominal margin for instrument uncertainty relative to the rated thermal power of 3514 MWt after the 1.62% thermal power optimization uprate.

Allowable Fuel RG 1.183, Table 3. N/A NEW, Per RG 1.183.

Burnup and non- The current licensing LOCA gap fractions Fuel bundle peak basis bounding fuel burnup will not exceed damage assessment 62 GWD/MTU, the scenario, which is maximum linear heat associated with a drop generation rate will not over the reactor core, is exceed 6.3 kW/ft for used and meets the fuel with greater than requirements of RG 54 GWD/MTU. 1.183, footnote 11.

Number of Failed 1200 pins of 330 pins on 7x7 basis NEW bounding Fuel Rods equivalent 1Ox10 fuel as the bounding assumption, which is in an 87.33 equivalent evaluation, considered conservative.

fuel pin array Number of fuel rods 66,720.12 66,720.12 No change.

in full core (87.33 pins/assembly (87.33 pins/assembly x 764 assemblies in x 764 assemblies in core) core)

Radial Peaking 1.7 1.5 NEW bounding Factor assumption, per RG 1.183.

Gap activity Release 0.030575 N/A NEW, per RG 1.183.

Potential with (0.017986 x 1.7)

Peaking Fraction of Fuel in 0.0077 0.0088 (for gap and NEW, per GE document

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 26

........ _____ ... Updated Table 4.3-1 (CRDA:Parameters1 Parameter or AST Value Pre-AST and Current Regulatory Basis.and Method Licensing Basis Comments Failed Rods assumed melt fractions NEDO-31400A, "Safety to melt combined) Evaluation for Eliminating the Boiling Water Reactor Main Steam Isolation Valve Closure Function and Scram Function of the Main Steam Line Radiation Monitor."

Melted Fuel activity 0.000235 NEW, gap fractions per release fraction with (0.030575 x 0.0077) RG 1.183.

peaking CRDA Radionuclide From the 60 isotopes TID 14844 NEW design basis Inventory forming the standard analysis used ORIGEN RADTRAD library, 2.1 to calculate values.

with decay to 24 Spent fuel source terms hours. Gap activities are based on the same are per RG 1.183. bounding reactor core source terms as were used for the LOCA analysis. Use is based on RG 1.183 guidance.

The Radionuclide inventory from the previous analysis was based on TID 14844 assumptions.

Dose Conversion EPA Federal ICRP60 Dose NEW, per RG 1.183 Factors Guidance Reports 11 conversion Factors, implemented in and 12 RG 1.109 RADTRAD.

Offsite Dose Limit 6.3 rem TEDE 6.25 rem Whole Body NEW, per 10CFR 50 75 rem Thyroid Appendix A, and RG 1.183.

Control Room Dose 5 rem TEDE for the 5 rem Whole Body, or NEW, Per 10 CFR50 Limit duration of the its equivalent to any Appendix A, GDC 19 and accident part. 10 CFR50.67 CR Volume Volume 176,000 ft' Volume 176,000 ft No change.

Isotopic Release 10% of the core NEW assumption, which Fractions From Fuel inventory of noble is considered gases is released from conservative per RG the fuel gap. Other 1.183.

nuclide groups contained in the gap are released per RG I

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 27

______________ :: Updated Table4.3-1 (CRDA Paiameters.

Parameter or AST Value Pre-AST 'and Current I Regulatory Basis and Method j _________ Licensing B sis Comments 1.183, Table 3.

100% noble gases and 50% iodines from melted fuel.

All activity released from the fuel mixes instantaneously with the reactor coolant.

Activity transported to 100% of all noble NEW assumption, which the gases, 10% of the is considered Turbine/Condenser iodines, and 1% of the conservative per RG remaining nuclides 1.183.

Activity available for 100% of all noble NEW assumption, which release from the gases, 10% of the is considered Turbine/Condenser iodines, and 1% of the conservative per RG remaining nuclides 1.183.

CR occupancy factor 1 1 No change CR Breathing Rate 3.5E-04 3.47E-04 NEW, Per RG 1.183 CR Unfiltered 1600 cfm Current licensing NEW, Per RG 1.183 Inleakage basis value is not appropriate with AST assumptions.

CR Normal 20,600 cfm Current licensing NEW, Per RG 1.183 (unfiltered) Intake basis value is not Flow appropriate with AST assumptions.

Offsite Breathing 3.5 E-04 0-8 hr 3.47 E-04 NEW assumption, which Rate 1.8 E-04 8-24 hr 1.75 E-04 is considered conservative per RG 1.183 CR Limiting X/Qs Limiting X/Qs 0 - 2 hr: 1.18E-03 Current licensing NEW, AST values utilize sec/m 3 basis value is not ARCON96 assumptions 2 - 8 hr: 9.08E-04 appropriate with AST per RG 1.194. Values sec/m 3 assumptions. used are the highest 8 - 24 hr: values for either Unit 2 or 4.14E-04 sec/m 3 Unit 3 for conservatism.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 28 Updated Table 4.3-1 (CRDA Parameters' Parameter or AST Value i: Pre-AST and Current Regulatory Basis and Method' Licensing Basis Comments EAB 0 - 2 hr: '4.25E-04 Current licensing NEW assumption, whcih Release Point Basis sec/m3 basis value is not is considered appropriate with AST conservative. Current Limiting Dispersion assumptions. licensing basis value is Factors not appropriate with AST assumptions.

LPZ Current licensing 0 - 8 hr: 2.08E-05 basis value is not NEW assumption, which sec/m 3 appropriate with AST is considered 8 - 24 hr: 1.37E-05 assumptions. conservative. Current sec/m 3 licensing basis value is not appropriate with AST I assumptions.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 29 Table 3 Updated Table 4.3-1 Parameters Applicable to AST Main Steam Line Break Accident Dose Considerations for Peach Bottom Atomic Power Station Use of new parameters is acceptable per Main Steam Line Break accident results below the Regulatory Limit as found within previously provided Calculation PM-1058, Revision 0 Parameteror Updated Table:4.3-1 (MSLB Parameters)

Paramieter or AST Value Pre-AST and Current Regulatory.~

.MethodLicensing Basis Basis and

__________________Comments Reactor Power 3528 MWth 3528 MWth No change.

Includes the 3514 MWth nominal currently licensed 0.38% margin for instrument uncertainty relative to the rated thermal power of 3514 MWt after the 1.62%

thermal power optimization uprate.

Amount of Fuel No fuel damage No fuel damage No change.

Damage as a result of the MSLB Iodine Activity Two cases (I-131 DEl): Two cases (I-131 DEl): No change.

Assumed in Reactor Iodine spike = 0.2 uCi/g Iodine spike = 0.2 uCi/g From UFSAR Coolant Equilibrium Iodine = 4.0 Equilibrium Iodine = 4.0 Section uCi/g uCi/g 14.6.5.2.1 CR HVAC No emergency filtration Rapid emergency HVAC NEW, Per RG system credit in AST actuation with filtration 1.183.

analysis for conservatism MSIV closure time 10.5 seconds 10.5 seconds No change.

Per UFSAR section 14.6.5.1.1

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 30

.UpdatedO Table 4.3-1 (MSLB! Pairamneters)______

Parameter or i Method............. 'AST Value

............... Pre-,AST and Current Regulatory S Licensing Basis Basis and Comments Flashing Fraction of 40% N/A NEW, per RG Liquid Water released 1.183.

Fraction of liquid 2% 2% No change.

water contained in Maximum the steam carryover in steam to turbine Mass release Data Steam: 25,800 lb Steam: 25,800 lb No change.

Liquid Water: 165,120 lb Liquid Water: 165,120 lb Per UFSAR Section 14.9.1.5 Iodine distribution 1-131 0.17 uCi/cc 1-131 0.17 uCi/cc No change.

1-132 1.02 uCi/cc 1-132 1.02 uCi/cc From UFSAR 1-133 1.04 uCi/cc 1-133 1.04 uCi/cc Section 1-134 1.47 uCi/cc 1-134 1.47 uCi/cc 14.6.5.2.1 1-135 1.30 uCi/cc 1-135 1.30 uCi/cc Noble Gas Kr-83m:1.92E-03 uCi/g Kr-83m:1.92E-03 uCi/g No change Distribution Kr-85m:3.44E-03 uCi/g Kr-85m:3.44E-03 uCi/g Kr-85: 1.13E-05 uCi/g Kr-85: 1.13E-05 uCi/g Kr-87: 1.13E-02 uCi/g Kr-87: 1.13E-02 uCi/g Kr-88: 1.13E-02 uCi/g Kr-88: 1.13E-02 uCi/g Kr-89: 7.33E-02 uCi/g Kr-89: 7.33E-02 uCi/g Xe-131m: 8.46E-06 uCi/g Xe-131m: 8.46E-06 uCi/g Xe-133m: 1.63E-04 uCi/g Xe-1 33m: 1.63E-04 uCi/g Xe-133: 4.62E-03 uCi/g Xe-133: 4.62E-03 uCi/g Xe-135m: 1.47E-02 uCi/g Xe-1 35m: 1.47E-02 uCi/g Xe-135: 1.24E-02 uCi/g Xe-135:1.24E-02 uCi/g Xe-137: 8.46E-02 uCi/g Xe-137: 8.46E-02 uCi/g Xe-138: 5.02E-02 uCi/g Xe-138: 5.02E-02 uCi/g Control Room 1 1 No change Occupancy Factor Dose Conversion EPA Federal Guidance ICRP60 Dose conversion NEW, per RG Factors Reports 11 and 12 Factors, RG 1.109 1.183 implemented inRADTRAD.

Offsite Dose Limit Iodine Spike: 25 rem TEDE Iodine Spike: 25 rem Whole NEW, per 10

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 31

_______________  : Updated Table 4.3-1 (MSLB Parameters)

Parameter or AST Value Pre-AST and Current Regulatory Method Licensing Basis Basis and Comments Equilibrium Iodine: 2.5 rem Body, 300 rem Thyroid CFR 50 TEDE Equilibrium Iodine: 2.5 rem, Appendix A, Whole Body and 30 rem and RG Thyroid 1.183.

Control Room Dose 5 rem TEDE for the duration 5 rem Whole Body, or its NEW, Per 10 Limit of the accident equivalent to any part. CFR 50 Appendix A, GDC 19 and 10 CFR50.67 CR Volume Volume 176,000 ftW Volume 176,000 ft3 No change.

Release Pathway Ground level release from a Directly to the environment NEW double-ended rupture of a 30m above grade. assumption, main steam pipe. which is considered, The released steam plume is conservative modeled as a hemispherical as justified in volume (cloud). This cloud is design then carried towards the CR analysis (PM-air intake by the wind at 1 1058).

meter per second.

Inhalation doses based on concentrations at the CR air intake as the cloud passes by.

Offsite doses use dispersion estimates as calculated using RG 1.5.

CR Limiting X/Qs Limiting X/Qs - N/A Hemispherical cloud model Current licensing basis NEW used value is not appropriate assumption, with AST assumptions. which is considered conservative as justified in design analysis (PM-1058).

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 32

________________ Updated Table,4.3-1 I(MSLB Parameters)!* ...

'Parameter or AST Value Pre-AST and Current Regulatory Method Licensing Basis Basis and

______________ _________________ Comments EAB 4.29E-04 sec/m 3 Current licensing basis NEW (Recalculated value) value is not appropriate assumption, Limiting Dispersion with AST assumptions. which is Factors considered conservative.

Current licensing basis value is not appropriate with AST assumptions.

LPZ Current licensing basis 5.97E-05 sec/m3 value is not appropriate NEW with AST assumptions. assumption, which is considered conservative.

Current licensing basis value is not appropriate with AST I assumptions.

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 33 Table 4 Updated Table 4.3-1 Peach Bottom Atomic Power Station AST Design Inputs Used in the LOCA Analysis (Updated with Current Licensing Basis Data and Justifications for Changes)

Updated Table 4.3-1 (ILOCAParameters)

Design Input Parameter AST Value Assigned Comments Containment, Leakage Model Parameters Source Term Thermal Power Level 3,528 MWt (includes 0.38% Unchanged from currently margin relative to rated thermal licensed value power of 3,514 MWt)

Extended Cycle Fuel Core Average 37.7 GWD/MTU Unchanged from currently Burnup licensed value Isotopi Cre Inventor (Ci/MWt)%..

(New Design Analysis values calculated using ORIGEN 2.1: for AST) ___"_____"_:

Isotope Ci/MW~ stp Ci/MW ~ Isotope Ci/MW~

CO-58" 1.529E+02 RU-103 4.202E+04 CS-136 2.027E+03 CO-60* 1.830E+02 RU-105 2.908E+04 CS-137 4.538E+03 KR-85 3.946E+02 RU-106 1.730E+04 BA-139 5.084E+04 KR-85M 8.313E+03 RH-105 2.752E+04 BA-140 4.896E+04 KR-87 1.633E+04 SB-127 2.896E+03 LA-140 5.019E+04 KR-88 2.303E+04 SB-129 8.638E+03 LA-141 4.640E+04 RB-86 6.518E+01 TE-127 2.873E+03 LA-142 4.532E+04 SR-89 2.798E+04 TE-127M 3.855E+02 CE-141 4.492E+04 SR-90 3.178E+03 TE-129 8.501 E+03 CE-143 4.427E+04 SR-91 3.801 E+04 TE-129M 1.267E+03 CE-144 3.596E+04 SR-92 4.017E+04 TE-131M 3.869E+03 PR-143 4.293E+04 Y-90 3.272E+03 TE-132 3.821 E+04 ND-147 1.838E+04 Y-91 3.448E+04 1-131 2.687E+04 NP-239 5.397E+05 Y-92 4.029E+04 1-132 3.881 E+04 PU-238 1.796E+02 Y-93 4.526E+04 1-133 5.556E+04 PU-239 1.200E+01 ZR-95 4.489E+04 1-134 6.1651E+04 PU-240 1.288E+01 ZR-97 4.657E+04 1-135 5.192E+04 PU-241 6.182E+03 NB-95 4.512E+04 XE-133 5.491 E+04 AM-241 9.528E+00 MO-99 5.078E+04 XE-135 2.228E+04 CM-242 2.388E+03 TC-99M 4.447E+04 CS-134 7.280E+03 CM-244 2.602E+02

• CO-58 & CO-60 activities are obtained from RADTRAD User's Manual, Table 1.4.3.2-3 (NUREG/CR-6604)

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 34 Updated Table 4.3-1 (LOCA Parameters)

Design IptParameter AST Value Assigned Comments Rad ion uclide.Composition Group Eements:. Comments.

Noble Gases Xe, Kr New assumption per RG 1.183, Halogens 1,Br Section 3.4, Table 5 Alkali Metals Cs, Rb Tellurium Group Te, Sb, Se Barium, Strontium Ba, Sr Noble Metals Ru, Rh, Pd, Mo, Tc, Co Lanthanides La, Zr, Nd, Eu, Nb, Pm, Pr, Sm, Y, Cm, Am Cerium Ce, Pu, Np Timing of Releaseý Phase (New Assumption per R4,1.183, Section 3.3, Table 4)

Phase Onset Duration Gap Release 12min 0.5 hr Early In-Vessel Release 10.5 hr 1.5 hr BWR Core Inventory, Fractionil Released'Inito'.ontainmffent (New Assumption pOer RG 1.183, Section 3.2, Table 1)

Group Gap Release'Phase- Early In-Vessel Release Phase Noble Gases 0.05 0.95 Halogens 0.05 0.25 Alkali Metals 0.05 0.20 Tellurium Metals 0.00 0.05 Ba, Sr 0.00 0.02 Noble Metals 0.00 0.0025 Cerium Group 0.00 0.0005 Lanthanides 0.00 0.0002 Iodine Chernical Form Released to the Cnta'inment Aerosol (Csl) 95% New assumption per RG 1.183, Elemental 4.85% Sections 3.5 and A.2 Organic 0.15%

Post-LOCA Drywell Pressure 49.1 psig Unchanged from currently licensed value Post-LOCA Drywell Temperature 280OF Reference 7.36, Section 8.3.4 Unchanged from currently licensed value

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 35 Updated Table 4.3-1 (LOCA Parameters)

Design Input Parameter AST Value Assigned Comments Activity Transport in Primary Containment Minimum Drywell Air Volume 159,000 ft3 UFSAR Table 5.2.1 Unchanged from currently licensed value Minimum Suppression Chamber 127,700 ft3 UFSAR Table 5.2.1 Unchanged Free Air Volume from currently licensed value Drywell plus Suppression Chamber 286,700 ft3 Unchanged from currently Free Air Volume (159,000 ft3 + 127,700 ft3) licensed value Containment Elemental Iodine Standard Review Plan 6.5.2 New assumption per SRP 6.5.2, Removal Model Page 6.5.2-10 Drywell Surface Area for 33,200 ft2 New Conservative assumption as Deposition/Plateout Model justified in Reference 7.37 Section 7.7.

Particulate (Aerosol) Powers' 10 percentile model New assumption per NUREG/CR-Deposition/Plateout Model 6604 (conservative application)

Containment Leak Rate into 0.700 w%/day for 2 min to 38 hrs New requirement per TS 5.5.12 Reactor Building 0.350 w%/day for > 38 hrs as justified in Reference 7.37.

Containment Drawdown Time _<180 seconds New assumption as justified in (3 minutes) Reference 7.37 SGT System Flow Rate 10,500 cfm TS SR 3.6.4.1.4 Unchanged from currently licensed value Reactor Building Volume 2,500,000 ft3 Unchanged from currently licensed value ESF Leakage Model Parameters Minimum Suppression Pool Water 122,900 ft3 Unchanged from currently Volume licensed value Sump Water Activity (New Assumption per RG 1.183, Sections A.5.1, A.5.3 & Tables 1 & 4)

RGr1o183 Gap Release Phase 'Early In-Vessel Release Phalse (G118)(3G, 1.1 83)ý (RG 1.183).

Timing Duration (Hrs) 2 min - 0.50 Hr 0.50 - 2.0 Hr (Conservatively earlier than actual end time of 0.52 hours6.018519e-4 days <br />0.0144 hours <br />8.597884e-5 weeks <br />1.9786e-5 months <br />)

Halogen 0.05 0.25 ESF Leakage Rate 10.0 gal/min (= 2 x 5.0 gal/min New assumption to establish a allowable leakage rate) new design basis (as used in Reference 7.37) and applied per RG 1.183, Section A.5.2.

Justified in Reference 7.37.

ESF Leakage Initiation Time and 0 to 30 days New conservative assumption Duration justified in Reference 7.37 Suppression Pool Scrubbing New assumption - Not credited RG 1.183, Section A.3.5

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 36 updated. Table 4.3-1 (LOCA Parameters)

Design Input Parameter AST Value Assigned Comments Long-Term Suppression Pool > 7.0 New Calculated value PM-1056, Water pH Rev. 0 (Reference 7.33), page 11 and 9.1, Section A.2. No value previously calculated.

ESF Leakage Maximum < 212°F Unchanged from currently Temperature licensed value Fraction of Iodine in ESF Leakage 0.10 New assumption per RG 1.183 that becomes Airborne justified with Torus water temperature < 212OF Chemical Form of Iodine in ESF Leakage Elemental 97% New assumption per RG 1.183, Organic 3% Section A.5.6 MSIV Leakage Mode! Parameters Total MSIV Leak Rate Through All 360 scfh for < 38 hrs @ 49.1 psig New assumption justified in Four Lines (180 scfh for > 38 hrs) Reference 7.37 (CLB value used is 46 scfh)

MSIV Leak Rate Through One Line 205 scfh for < 38 hrs @ 49.1 psig New assumption justified in With MSIV Failed (102.5 scfh for >38 hrs) Reference 7.37 - maximum leakage rate through any one. line (CLB only has 46 scfh total)

MSIV Leak Rate Through. Three Intact Lines:

First Intact Line 155 scfh for < 38 hrs @ 49.1 psig New assumption justified in (77.5 scfh for > 38 hrs) Reference 7.37 - remainder of unallocated leakage Second Intact Line 0 scfh for < 30 days @ 49.1 psig New assumption justified in Reference 7.37 - remainder of unallocated leakage Third Intact Line 0 scfh for < 30 days @ 49.1 psig New assumption justified in Reference 7.37 - remainder of unallocated leakage Natural Removal Efficiency For 50 percent New assumption justified in Elemental Iodine In Each Steam Reference 7.37 per AEB 98-03, Line Volume Appendix B, page B-3 (Previous value not appropriate for AST)

Control Room Model Parameters CR Envelope Pressure Boundary 176,000 ftW Unchanged from currently Free Volume licensed value

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 37 Updated Table: 4.3-1 (LOCA: Parameters)

Design Input Parameter AST Value: Assigned , Comments MCREV Filtration System Actuation 30 minutes New conservative assumption Time Following a LOCA Justified in Reference 7.37 (Provides conservative time for unfiltered intake prior to initiation of emergency HVAC system.)

CR Emergency Ventilation Mode 3,000 cfm +/- 10% Unchanged from currently Air Intake Rate 2,700 cfm maximizes dose licensed value (TS 5.5.7). AST values based on worst-case tolerance values (nominal values previously used).

CR Unfiltered Inleakage during 18,500 cfm (includes New conservative assumption Normal Operation (< 0.5 hr) ingress/egress inleakage of 10 Justified based on Parametric cfm) Study in Attachment 1, Figure 1 of Reference 7.37.

CR Unfiltered Inleakage during 500 cfm (includes ingress/egress New conservative assumption Emergency Ventilation Mode (> 0.5 inleakage of 10 cfm) justified in Reference 7.37.

hr) 369 cfm by tracer gas testing NCS Corporation Report for (Note: The measured value was Control Room Envelope Inleakage statistically zero. However, the Testing At Peach Bottom Atomic upper tolerance value was used Power Station, 2004, (Reference instead of zero for 7.38) conservatism.)

.cR Emergency ventilationMode intake Charcoal and HEPA Filter Efficiencies Elemental Iodine 89% New conservative assumption (CLB used 90%) Justified in Reference 7.37, Organic Iodide 89% Section 7.11.

Organic__Iodide_(CLB used 90%)

Particulate Aerosols 98%

(CLB used 99%)

'CR yQs For Containment & ESF Leakage Release Via Off-G asStack Release S(CLB values not appropriate for AST)

Time X/sci 3) 0-2 2.72E-06 New values from Design 2-8 1.46E-08 Analysis (Reference 7.32).

24-96 hrs X/Q value is 8-24 1 .46E-08 conservatively used for 2-24 hrs 24-96 1.46E-08 x/Q values.96-720 4.21 E-09

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 38 Updated Table 4.3-1 (LOCA Parameters)

Design Input Parameter AST Value Assigned Comments CR XIQs For MSIV Leakage Release Via Unit 2 TB/RB Exhaust Vent (CLB values not appropriate for AS' Time X/Q (sec/m 3) 0-2 1.1 8E-03 New values from Design 2-8 9.08E-04 Analysis (Reference 7.32). The higher Unit 2 RB Stack X/Q values are conservative for use on Unit 3 24-96 2.90E-04 96-720 2.26E-04 CR Occupancy Factors and Breathing Rate.

time (Hr) _ _ _ _ _ _ _ _ _ _ _

0-24 100 No change from currently used 24-96 60 values (per RG 1.183, Section 96-720 40 4.2.6)

CR Breathing Rate 3.5E-04 m 3/sec New value per RG 1.183, Section 4.2.6 (CLB used 3.47E-04)

Offsi~te:Dose Receptor Release Model Parameters EAB X/Qs For Containment & ESF Leakage Release Via Off-Gas Stack Release (CLB- values not appropriate for ASTr Time (hrs) X10 (sec/m3) 0-0.5 5.30E-05 New values from Design 0.5-2 8.89E-06 Analysis (Reference 7.32).

New values from Design Analysis (Reference 7.32) and 2-720 8.89E-06 used per RG 1.183, Section 4.1.5 (0.5-2 hr X/Q value conservatively

• modeled after 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />)

EAB X/Q For MSIV Leakage Release (LB values ýnot appropriate for AST Time (.. .. X/Q (seclm!)

New values from Design Analysis (Reference 7.32)

New values from Design Analysis (Reference 7.32) and 2-720 4.25E-04 used per RG 1.183, Section 4.1.5 (0-2 hr x/Q value conservatively modeled after 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />)

EAB Breathing Rate 3.5E-04 m 3/sec RG 1.183, Sections (Previously 4.1.3 & 4.1.5 used 3.47E-04)

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 39 Updated Table 4.3-1 (LOCA Parameters)

Design Input Parameter AST Value Ass~ig~ned Comments LPZ X/Qs For Containment & ESF Leakage Release Via Off-Gas Stack Release (CLB3values not appropriateffrAST)

Time (hrs) XIQ (sec/in3 0-0.5 1.75E-05 New calculated values from 0.5-2 8.87E-06 Design Analysis (Reference 3.94E-06 7.32) 2-8 8-24 2.62E-06 24-96 1.09E-06 96-720 3.06E-07 LPZ XIQs For MSIV Leakage Release Via, Unit 2 TB/RB Exhaust Vent (CLB vaIlues not appropriate for AST Time (hrs) X/Q (sec/rn 3 )

0-2 4.81 E-05 New calculated values from 2-8 2.08E-05 Design Analysis (Reference 1.37E-05 7.32) 8-24 24-96 5.49E-06 96-720 1.49E-06

_____________________________ LPZ Breathing Rates ,,________________________

Time (hrs)0BR Ec)

(..**3 ____________________________

0-8 3.5E-04 New assumption per RIG 1.183, 8-24 1.8E-04 Sections 4.1.3 and 4.4 (Previously 24-720 2.3E-04 used unrounded values)

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 40 Table 5 RIS 2006-04 Conformance Table Peach Bottom Atomic Power Station RIS Issue Licensee Comments

1. Level of Detail Contained in LARs (1) The AST amendment request should provide justification for Provided in Section 2.0 of the Licensee's Evaluation for each each individual proposed change to the technical specifications individual proposed change to the TS.

(TS).

(2) The AST amendment request should identify and justify each Section 2.0 of the Licensee's Evaluation provides an overview change to the licensing basis accident analyses. justification. Section 4.0 and 5.0 provide the detailed justification.

Updated Table 4.3-1 (included in this RAI Response) provides further clarity.

(3) The AST amendment request should contain enough details Sufficient detail in tabular format is provided in Section 4.0 of the (e.g., assumptions, computer analyses input and output) to allow Licensee's Evaluation to allow the NRC staff to confirm the dose the NRC staff to confirm the dose analyses results in analyses results in independent calculations. In addition, the independent calculations. dose consequence calculations submitted contain computer input and output information to allow the NRC staff to confirm the dose analyses results in independent calculations.

Licensees should identify the most current analyses, The most current analyses, assumptions, and TS changes are assumptions, and TS changes in their submittal and supplements identified throughout Attachment 1 of the License Amendment to the submittal. Request.

2. Main Steam Isolation Valve (MSlV) .Leaka e and Fission Product Deposition in Piping i.

Any licensee who chooses to reference these AEB 98-03 This amendment request references the basic methodology used assumptions should provide appropriate justification that the in the Perry Plant Application. However, it uses site-specific assumptions are applicable to their particular design. parameters and PBAPS design considerations.

Ifappropriate justification is provided, the suppression pool free This mixing is discussed in the design basis LOCA Calculation air volume may be included provided there is a mechanism to ensure mixing between the drywell and wetwell.

For aerosol settling, only horizontal sections of piping should be Only horizontal sections of piping are credited for aerosol credited. deposition.

Given the large uncertainty associated with iodine behavior in Deposition of elemental iodine is credited and justified. No

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 41

RIS:Ilssue Licensee Comments piping, deposition of gaseous iodine in piping should be omitted deposition of organic iodine in the MSIV leakage path is credited.

unless appropriate justification is provided (including providing estimates of the thermal and hydraulic conditions in the piping).

3. Control 'Roo-m Habiltabillity' Use of non-ESF ventilation systems during a DBA should not be No credit is taken for use of non-ESF ventilation systems during assumed unless the systems have emergency power and are a DBA unless the operation of such a system (e.g., reactor part of the ventilation filter testing program in Section 5 of the TS. building normal exhaust) makes it worse.

Generic Letter (GL) 2003-01, "Control Room Habitability" Unfiltered inleakage testing was performed using the tracer gas requested licensees to confirm the ability of their facility's control method in response to GL 2003-01. The test indicated that the room to meet applicable habitability regulatory requirements. The inleakage was statistically zero.

GL placed emphasis on licensees confirming that the most limiting unfiltered inleakage into the control room envelope (CRE) was not greater than the value assumed in the DBA analyses.

Some AST amendment requests proposed operating schemes Control room and other ventilation systems, which affect areas for the control room and other ventilation systems which affect adjacent to the CRE and are the same as the operation and areas adjacent to the CRE and are different from the manner of performance described in the response to the GL.

operation and performance described in the response to the GL.

without providing sufficient justification for the proposed changes in the operating scheme.

4. Aftmospheric. Dispersion Licensees have the option to adopt the generally less CR X/Q values for releases were calculated using the computer conservative (more realistic) updated NRC staff guidance on code ARCON96, the methods of Regulatory Guide 1.194, and as determining X/Q values in support of design basis control room supplemented using PAVAN.

radiological habitability assessments provided in RG 1.194, "Atmospheric Relative Concentrations for Control Room Radiological Habitability Assessments at Nuclear Power Plants".

Regulatory positions on X/Q values for offsite (i.e., exclusion area The X/Q values for offsite locations were evaluated using PAVAN boundary and low population zone) accident radiological and the methods of Regulatory Guide 1.145.

consequence assessments are provided in RG 1.145, "Atmospheric Dispersion Models for Potential Accident Consequence Assessments at Nuclear Power Plants".

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 42 RIS IssueLicensee Comment The submittal should include a site plan showing true North and Appropriate plot plan showing true north is included in the design indicating locations of all potential accident release pathways and basis X/Q calculation provided (Attachments C and D of the control room intake and unfiltered inleakage pathways (whether Calculation PM-1055) and as supplemented inthis response.

assumed or identified during inleakage testing).

The submittal should include a justification for using control room The most limiting X/Q is used for CR unfiltered inleakage as intake X/Q values for modeling the unfiltered inleakage, if described in response to Question 5.

applicable.

The submittal should include a copy of the meteorological data The revised X/Q values used for the AST application have been inputs and program outputs along with a discussion of developed using appropriate meteorological data.

assumptions and potential deviations from staff guidelines.

Meteorological data input files should be checked to ensure quality (e.g., compared against historical or other data and against the raw data to ensure that the electronic file has been properly formatted, any unit conversions are correct, and invalid data are properly identified).

When running the control room atmospheric dispersion model Two levels of meteorological data used in the calculation of ARCON96, two or more files of meteorological data ground level and elevated X/Qs have been provided.

representative of each potential release height should be used if X/Q values are being calculated for both ground-level and elevated releases.

In addition, licensees should be aware that (1) two levels of wind (1) Two levels of wind speed data are used where appropriate.

speed and direction data should always be provided as input to (2) Invalid or missing data are correctly indicated using a field of each data file, (2) fields of "nines" (e.g., 9999) should be used to "nines." (3) Wind direction data is from 1 to 360 degrees.

indicate invalid or missing data, and (3) valid wind direction data should range from I°to 3600.

Licensees should also provide detailed engineering information No such adjustments are made relative to this LAR.

when applying the default plume rise adjustment cited in RG 1.194 to control room X/Q values to account for buoyancy or mechanical jets of high energy releases.

This information should demonstrate that the minimum effluent N/A velocity during any time of the release over which the adjustment

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 43 RIS Iss-ue Licensee Comments is being applied is greater than the 95th percentile wind speed at the height of release.

When running the offsite atmospheric dispersion model PAVAN, Five (5) years of meteorological data were used in the two or more files of meteorological data representative of each calculation.

potential release height should be used if X/Q values are being calculated for pathways with significantly different release heights (e.g., ground level versus elevated stack).

The joint frequency distributions of wind speed, wind direction, See response to question 13.

and atmospheric stability data used as input to PAVAN should have a large number of wind speed categories at the lower wind speeds in order to produce the best results.

.5. ModelingoESF 'Leakage...............

The radiological consequences from the postulated [ESF] ESF leakage is analyzed and combined with the consequences leakage should be analyzed and combined with consequences postulated for other fission product release paths to determine postulated for other fission product release paths to determine the total calculated radiological consequences from the LOCA.

the total calculated radiological consequences from the [loss-of-coolant accident] LOCA.

Licensees should account for ESF leakage at accident conditions ESF leakage was accounted for at accident conditions.

in their dose analyses so as not to underestimate the release rate.

In Appendix A to RG 1.183, Regulatory Position 5.5, the NRC The RG 1.183 recommended value of 10% is used. The staff provided a conservative value of 10 percent as the assumed suppression pool pH value remains above 7.0 for the 30-day amount of iodine that may become airborne from ESF leakage duration of the accident. Suppression pool temperature remains that is less than 212 0 F. below 212 0 F.

Figure 3.1 in NUREG/CR-5950 can be used to quantify the The calculation methodology for containment sump pH control amount of elemental iodine as a function of the sump water pH was based on the approach outlined in NUREG-1465 and and the concentration of iodine in the solution. In some cases, NUREG/CR-5950.

however, licensees have misapplied this figure. Rather than using the total concentration of iodine (i.e., stable and Both stable and radioactive iodine were considered.

radioactive), licensees based their assessment on only the radioactive iodine in the sump water. By using only the

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 44 RIS Issue Licensee Comments radioactive iodine, licensees have underestimated how much iodine evolves during postaccident conditions. _

6. Release'Pathwajys, Changes to the plant configuration associated with an LAR (e.g., The AST application re-analyzes the design basis dose an "open" containment during refueling) may require a reanalysis calculations for an open containment during refueling and of the design basis dose calculations. A request for TS following a fuel handling accident.

modifications allowing containment penetrations (i.e., personnel air lock, equipment hatch) to be open during refueling cannot rely on the current dose analysis if this analysis has not already considered these release pathways. Releases from personnel air locks and equipment hatches exposed to the environment and containment purge releases prior to containment isolation need to be addressed.

Licensees are responsible for identifying all release pathways Control room, exclusion area boundary, and low population zone and for considering these pathways in their AST analyses, atmospheric dispersion factors (X/Q) for all applicable release consistent with any proposed modification. paths were reviewed and revised for AST as necessary.

7. Primraryto SecondarylLeaikage Some analysis parameters can be affected by density changes N/A for BWR that occur in the process steam. The NRC staff continues to find errors in LAR submittals concerning the modeling of primary to secondary leakage during a postulated accident. This issue is discussed in Information Notice (IN) 88-31, "Steam Generator Tube Rupture Analysis Deficiency," (Ref. 11) and Item 3.f in RIS 2001-19. An acceptable methodology for modeling this leakage is provided in Appendix F to RG 1.183, Regulatory Position 5.2.

8. ElementallIodine. Decontamination Factor (DF)

Appendix B to RG 1.183, provides assumptions for evaluating the The depth of water over the damaged fuel is not less than 23 feet radiological consequences of a fuel handling accident. If the for the bounding fuel handling accident in the reactor cavity. Due water depth above the damaged fuel is 23 feet or greater, to the submergence of the damaged fuel, the iodine release is Regulatory Position 2 states that "the decontamination factors for assumed to experience a DF of 200 per RG 1.183.

the elemental and organic [iodine] species are 500 and 1,

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 45 RIS.Issue, Licensee Commentst.

respectively, giving an overall effective decontamination factor of 200." However, an overall DF of 200 is achieved when the DF for elemental iodine is 285, not 500.

9.'. sotopes Used in Dose §sesset For some accidents (e.g., main steamline break and rod drop), Noble gas isotopes were included in the dose assessment. The licensees have excluded noble gas and cesium isotopes from the contribution due to cesium has been shown to be insignificant in dose assessment. The inclusion of these isotopes should be other Exelon submittals such as for Dresden, Quad Cities, addressed in the dose assessments for AST implementation. Limerick, and Clinton. For this reason, and the fact that cesium is not specifically included in RG 1.183 Appendix D, Section 4.4, cesium is not included in the analysis.

10. Definition of! D0SeEquivalent 131 In the conversion to an AST, licensees have proposed a The definition of DEI-131 is modified to reflect that the dose modification to the TS definition of dose equivalent 131. Although conversion factors are those listed in Federal Guidance Report different references are available for dose conversion factors, the 11.

TS definition should be based on the same dose conversion factors that are used in the determination of the reactor coolant dose equivalent iodine curie content for the main steamline break and steam generator tube rupture accident analyses.

11. Acceptance Criteria for Off,-Gas or Waste Gas System Release .

As part of full AST implementation, some licensees have Accident not included with this submittal.

included an accident involving a release from their off-gas or waste gas system. Any licensee who chooses to implement AST for an off-gas or waste gas system release should base its acceptance criteria on 100 mrem TEDE. Licensees may also choose not to implement AST for this accident and continue with their existing analysis and acceptance criteria of 500 mrem whole body.

12. Cnanment Spray Mxn Some plants with mechanical means for mixing containment air Containment spray is not credited in this submittal.

have assumed that the containment fans intake air solely from a sprayed area and discharge it solely to an unsprayed region or

U. S. Nuclear Regulatory Commission License Amendment Request Alternative Source Term Docket Nos. DPR-44 and DPR-56 May 23, 2008 Page 46

,RIS Issue, Licensee'Comm'ents.

vice versa. Without additional analysis, test measurements or further justification, it should be assumed that the intake of air by containment ventilation systems is supplied proportionally to the sprayed and unsprayed volumes in containment. _

ATTACHMENT A PAVAN X/O (sec/m 3) 1 Off-Gas Stack and Reactor Building Stacks EAB X/Q Values( ' 2)

RELEASE X/Q JFD Wind Speed LOCATION PARAMETERt 3 ) 0-0.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> 0-2 hour 0-8 hour 8-24 hour 1-4 day 4-30 day Category S I I I aCnmnlinnep(4)

F,- I .06E-06 3.53E-07 8.86E-08S NA RG-1.23, Revision 0 (WSW) -- (WSWW) (W)1 1 (W)

Direction-Specific Max u.u*.l-U 1.88E-06 1.08E-06 3.73E-07 9.29E-08 NA (SW) RG 1.23, Revision I (SW) (WSW) (W) (W)

Tower 2 320' winds; Tower 2 316' - 33' stability S it e Li mit

} -_--

NA NA 5.30E-05 (S, W, WNW, 9.17E-06 8....8j_9E-06_

NA.:

3.24E-06 3.14E-106 NA 1.92E-06 6.22E-07 1.23E-07 1l187E-0 16 6.03 E-07 NA NA 1l.19E-07_

NA RG 1.23, Revision I RG 1.23, RevisionO0 RG. 1.23, Revision 0 SSE)

Max Fumigation -4 ..------------

5.3606-5 (S, W, NA NA NA NA NA RG 1.23, Revision I WNW, SSE)

Unt '& S NA-3:46E-04: NAE 1.79E1-04.. 1.29E-04 6. 33E-05 " :"227E:05 : :RG 1.'23, ReVision():

Tower 2 33' Direction-Specific(Max (ENE) (ENE)' (ENE) (ENE) (ENE) - R 23 Revision 0 winds; 150'-Tower 33' 2 NA 3.54E-04 (E) 1.85E-04 (E) 1.34E-04 (E) 6.61E-05 (E) 2.40E-05 (E) RG 1.23, Revision 1 stab ility . . . .. . .. .. *:] . .  : i :: : i : :

stability NA 2.45E-04 1.34E-04 9.95E-05 5.19E-05 2.04E-05 RG 1.23, Revision0:O Site Lim it-- ------ --------- ------ -- ------- ---- -- ----

NA 2.95E-04 1.59E-04 1.16E-04 5.95E-05 2.27E-05 RG 1.23, Revision I

Units 2 and 3 Reactor Building Stacks., Reactor Building Personnel Access Doors,

Railway Bay Doors, Roof Scuttle, and,Ground-Level :Hatch ____________

NA - 4.25E-04 2.26E-04 1.6 '6E-04 8.45E-05 ,3. 22E-05 RG 1.23, Revision 0 Direction-Specific Max (E).----(SE)----' (SE)--- (SE) ------(SE)-

(SE - R - 2 e River Tower NA 4.51E-04 2.42E-04 1.77E-04 8.97E-05 3.39E-05 RG 1.23, Revision I 45'winds; Tower NA (SE) (SE) (SE) (SE) (SE) RG_1.23,_evision_

IA 89'- -33' stability NA 4.05E-04 2.19E-04 1.61E-04 &28E-05 - RG 123, Revision 0 Site Lm 04 --------

SiteLimt -----

NA --- ,4.08-E-04 2.22 -E-04_ .4E0 8.7--------- 3.2-8E-0 -5 _RG_ 1.23 -,-R-evision-I 1Blue highlighting indicates X/Q values obtained from Calculation PM- 1055, Revision 0.

2 Non-blue highlighting indicates X/Q values additionally generated for purpose of providing AADB RAI 13 responses.

3 The highest of the Direction-Specific and the Site Limit values are indicated in bold.

RG 1.23, Revision 0 and RG 1.23, Revision I (March 2007) wind speed categories are shown in Attachment A, Sheet 3 of 6.

Sheet I of 6

ATTACHMENT A PAVAN X/O (sec/m 3)

Off-Gas Stack and Reactor Building Stacks LPZ X/Q Values(1' 2)

I JFD Wind Speed I

RELEASE LOCATION X/Q PARAMETER1 3 0-0.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> I 0-2 hour 0-8 hour 8-24 hour 1-4 day 4-30 day Category 4)

I Off-Gas Stack E-06 2.56E-06 1.78E-06 I 8.08E-07 I2.60E-07 RG 1.23, Revision 0:

(N) (N), (N) (N)

Direction-Specific Max 5.67E-06 2.7 1E-06 1.88E-06 8.44E-07 2.67E-07 NA RG 1.23, Revision 1 (N) (N) (N) (N) (N)

Site im.tNA . 8.87E-06 3.94E-06 2.62E-06 1I

.09E-06: 3.06E-07 RG 1.23,.Revisionr0 Tower 2 320' winds; Tower 2 NA 9.05E-06 4.01E-06 2.67E-06 1.10E-06 3.10E-07 RG 1.23, Revision I 316'- 33' stability 1.75E-05 (SW, NA NA NA NA NA RG 1.23, Revision 0 WSW, Max Fumigation NW, N) 1.75E-05 (SW, NA NA NA NA NA RG 1.23, Revision I WSW, NW, N) A- A A ~A A Units 2 and 3 Reactor Building Stacks, Reactor Building Personinel Access Doors, Railway Bay Doors, Roof Scuittle,*andGround-Level Hatch _ _ _

4.81 E-05 22.ý8E-05 1.37E-05 5.49E-06 1.49E-06 R 3Rvso NA RG 23, Revision Oý (ENE), (ENE) (ENE) . (ENE) < (ENE)

Direction-Specific Max--------------------------------------------- -------- ------

Tower 2 33' 4.82E-05 2.10E-05 1.39E-05 5.66E-06 1.55E-06 RG 1.23 Revision I winds; Tower 2 (E) (E) (E) (E) (E) 150' - 33' stability NA 3.07E-05 1.43E705 9;74E-06 4.25E-06 1.29E706 RG 1.23 Revision 0 S ite Lim it --- - -- - - - --- --- - -- - - - -- - - -- - --- ---- ----- - - -I-NA 3.65E-05 1.67E-05 1.13E-05 4.82E-06 I1.42E-06 RG 1.23, Revision I Blue highlighting indicates X/Q values obtained from calculation PM-1055, Revision 0.

2 Non-blue highlighting indicates X/Q values additionally generated for purpose of providing AADB RAI 13 responses.

The highest of the Direction-Specific and the Site Limit values are indicated in bold.

4 RG 1.23, Revision 0 and RG 1.23, Revision 1 (March 2007) wind speed categories are shown in Attachment A, Sheet 3 of 6.

Sheet 2 of 6

ATTACHMENT A PAVAN X/O Wind Speed Categories Wind Speed Categories8 Wind Speed Categoriesa (Regulatory Guide 1.23, Revision 0) (Regulatory Guide 1.23, Revision 1)

Category Wind Speed (mph) Category Wind Speed (mph) 1 (Calm)o <0.5 1 (Calm)t' <0.5 2 >=0.5 to <3.5 2 >=0.5 to <2.35 3 >=3.5 to <7.5 3 >=2.35 to <3.47 4 >=7.5 to <12.5 4 >=3.47 to <4.59 5 >=12.5 to <18.5 5 >=4.59 to <6.82 6 >=6.82 to <9.06 6 >=18.5 to <24 7 >=24 7 >=9.06 to <11.30 8 >=11.30 to <13.53 9 >=13.53 to <18.01 10 >=18.01 to <22.37 11 >=22.37 a To be inclusive of all monitored wind speeds, a midpoint was assumed between each designated wind speed category.

"The higher of the starting speeds of the Climatronics wind vane and anemometer equipment (i.e. 0.50 mph) was used as the threshold for calm winds, per Regulatory Guide 1.145, Section 1.1.

Sheet 3 of 6

ATTACHMENT A PAVAN Results for Off-Gas Stack to Control Room Intake X/0 Calculations*1' 2)

JFD Wind ____

Modeled Horizontal Distance (m) from Stack to Control Room Intake Averaging Speed 209 Period Category (Actual 280 300 500(3) 750 1000 1500 2000 3000 4000 5000 6000 Compliance Distance) I I I - I I - I X/Q (sec/mi) (6)

Rl2, 2.72E-06 2.72E-06 2.72E-061:2.72-06 2.31E-06 2.06E-06 1.95F-06 1.83F-06 1.77E-06 1.71E-06 1.7 0E-0 6 l1.60E-06 0-2 4,5) Revis)ion 0.----------

RG 1.23, 3.31E-06 3.31E-06 3.31E-06 3.31E-06 2.60E-06 2.32E-06 2.18E-06 2.05E-06 1.95E-06 1.87E-06 1.86E-06 1.75E-06 Revision I 1.4R 1.23,s RU12, 2,03E-08 1.56E-07, 4 ý94E 07QJ3.50E-07 2.80E-07 2.34E-07 2.07E-07 2.15E 07: 2'50E-07 2.59E-07 2.58E-07 2.47E3 07 4

1-4 day ( ,5) Revision 0ý RG 1.23, 2.28E-08 1.68E-07 2.18E-07 3.93E-07 3.02E-07 2.55E-07 2.26E-07 2.34E-07 2.65E-07 2.74E-07 2.72E-07 2.62E-07 4

4-3 da~ '~ _Revision 0 1,1 RG !.23 1,06E-09 12.60E-08 3.95E-08 l.O1E-07 7.83E-08 6.31E-08 5.35E-08 6.38E-08 8.36E-08 8.93E-08 8.86E .08 8.43E-108 RG 1.23, 1.14E-09 2.79E-08 4.23E-08 1.09E-07 8.26E-08 6.75E-08 5.77E-08 6.61E-08 8.60E-08 9.17E-08 9.07E-08 8.67E-08 Revision I1 1Blue highlighting indicates X/Q values obtained from calculation PM-1055, Revision 0.

2 Non-blue highlighting indicates X/Q values additionally generated for purpose of providing AADB RAI 13 responses.

3Maximum hourly X/Q (which is assigned to represent the 0-2 hour period) is actually predicted to occur at 500 m; however, in accordance with PAVAN model methodology for elevated releases, this maximum value is conservatively also assigned to any lesser desired boundary distance.

4 Averaging period maxima are indicated in bold.

5Underlined values are incorporated into ARCON96 determination of Control Room Intake per NRC RG 1.194, Section 3.2.2.

6 The maximum of the Direction-Specific Max and Site Limit values is listed.

Sheet 4 of 6

ATTACHMENT A Off-Gas Stack to Control Room Intake X/Q Summary (Calculated in accordance with RG 1.194, Section 3.2.2)

ARCON96(2) 209 112 1.00E-15 1.00E-15 1.00E-15 7.25E-1 5 5.92E-15 209 PAVAN (3,4) (actual 72.1 3.31 E-06 NA(5) NA 2.28E-08 1.14E-09 distance)

PAVAN (3,4) 280 72.1 3.31 E-06 NA NA 1.68E-07 2.79E-08 PAVAN (3,4) 300 72.1 3.31E-06 NA NA 2.18E-07 4.23E-08 PAVAN (3,4) 500 72.1 3.31 E-06 NA NA 3.93E-07 1.09E-07 PAVAN (3,4) 750 72.1 2.60E-06 NA NA 3.02E-07 8.26E-08 PAVAN (3,4) 1000 72.1 2.32E-06 NA NA 2.55E-07 6.75E-08 PAVAN (3,4) 1500 72.1 2.18E-06 NA NA 2.26E-07 5.77E-08 PAVAN (3,4) 2000 72.1 2.05E-06 NA NA 2.34E-07 6.61 E-08 PAVAN (3,4) 3000 72.1 1.95E-06 NA NA 2.65E-07 8.60E-08 PAVAN (3,4) 4000 72.1 1.87E-06 NA NA 2.74E-07 9.17E-08 PAVAN (3,4) 5000 72.1 1.86E-06 NA NA 2.72E-07 9.07E-08 PAVAN (3,4) 6000 72.1 1.75E-06 NA NA 2.62E-07 8.67E-08 X/O values calculated according to RG 3.31 E-06 1.OOE-15 1.OOE-15 1.64E-08 4.54E-09 1.194, Section 3.2.2 1 The release height for PAVAN model runs is measured from the Control Room Intake elevation instead of plant grade per RG 1.194, Section 3.2.2.

2 ARCON96 X/Q values, taken from Table 2-2 in Calculation PM-1055, Revision 0.

3 The higher of the max sector XIO and site limit value is selected.

4 The higher of the RG 1.23, Revision 0 and RG 1.23, Revision 1 X/Q values was selected.

5 Not applicable Sheet 5 of 6

ATTACHMENT A X/O (sec/m 3) Results Summary (Incorporating revisions to Table 4-1 from PM-1055, per AADB RAI 13)

RECEPTOR RELEASE POINT 0 - 0.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> 0-2 hour 2-8 hour 8-24 hour 1-4 day 4-30 day Off-Gas Stack 3.31 E-06 1.OOE-15 1.OOE-15 1.64E-08 4.54E-09 Control Room Intake Unit 2 Reactor Building Stacks 1.18E-03 9.08E-04 4.14E-04 2.90E-04 2.26E-04 Unit 3 Reactor Building Stacks 1.18E-03 8.91E-04 4.00E-04 2.51E-04 1.98E-04 Off-Gas Stack 5.30E-05 9.17E-06 3.24E-06* 1.92E-06 6.22E-07 1.23E-07 EAB Units 2 and 3 Reactor Building (823 m) Stacks, RB Personnel Access Doorm) Ra Stacks, Bal Drs, 4.5 1E-04 2.42E-04*

Doors, Railway Bay Doors, (E 1.77E-04 8.97E-05 3.39E-05 S) (E S) (E RoofScutleand(SE) (SE) (SE) (SE) (SE)

Roof Scuttle, and Ground-Level Hatch .... ________ _______

Off-Gas Stack 1.75E-05 9.05E-06 4.01E-06* 2.67E-06 1.1OE-06 3.10E-07 LPZ Units 2 and 3 Reactor Building (7,300 m) Stacks, RB Personnel Access 4.82E-05 2.1OE-05* 1.39E-05 5.66E-06 1.55E-06 Doors, Railway Bay Doors, (E) (E) (E) (E) (E)

Roof Scuttle, and Ground-Level Hatch

• PAVAN result representing 0-8 hour time period.

Sheet 6 of 6

ATTACHMENT B Peach Bottom Joint Frequency Distribution 1984-1988 Tower 2 320' wind 316'-33' Delta T Wind Direction Category -I J I NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW Calms I I (A) 2(1) 3 (C) 5 (E) 6 (F)

Sheet 1 of 12

I Calml ATTACHMENT B 0 <* 07 7 9 6 6 8 2 1 7 8 8 1 10 8 8 7 10 10 4 5 5 4 5 3 3 2 9 1 5 8 5 6 6 9 ':

4 4 9 5 4 5I 11 4 8 9 6 8 7 8 11 12 I 11l2I 35 8 15 13 7 5 12 5 22 19 22 19 25 22 44 34 287 7(G) 6 17 3 5 4 3 1 8 3 6 16 36 25 28 26 53 62 296 7 4 1 0 0 1 4 3 8 4 16 40 27 20 41 29 20-06 0 0 0 0 21 i 1 10 23 37 10 17 86 I7Tt t14 1 0 0 0 0 G 8 1 0 61 14 24 32 5 4 87 10 6 0 6 0 0 0 0 0 0 0 0 2 1 2 6 0 77-;- - 5 11 0 1! 0 0 80 8 0O000 0 0 8 0 8 6f 7ota 1 261 9180 121 $21 2041 12t* 22971 817< . M2. 2%$ 1 381< 12 34, -a,14.7 46n5 1>.

Notes:

1) Wind Spa )d Categories do inod as follows Category Wind Speed (.ph) 1 (Ca*m) <0,5

>=0.5 to <2.35

>=2.351to<3.47 4 >=3.47 to <4.59

>-4.59 to <6.82

>=6.B2 to <9.06

-=9 06 to <1 1.3

>=11.3 to <13.53

>=13.53 to <180 Sheet 2 of 12

ATTACHMENT B Peach Bottom Joint Frequency Distribution 1984-1988 Tower 2 320' wInd 316'-33' Dela T Wind Direction Category 1

Category " 1 21 3 1 J .41 71 .1 1 101 ill 121 131 141 151 l16oC,° I Total I I (A) 2 (B) 3(C) 4 (D) 5(E) 2 0.037409 0.023380 0.025718 0.028056 0.023389 0.028056 02056 0.02805 0.035070 0.035070 0.032732 0.030394 0030394 0.016366 0 0 3 0.02330 0020 00 0 003740 0.04761 0.025718 0.042085 0.046761 0.02571 0.046761 0.039747 0.042085 0037409 0.035070 0.03034 0035070 _34

-4 0.060769 0.a) 0. 6 030394 0.42085 0.063127 0.079493 0.067803 0.063127 677155 0.084169 0.051437 0.042085 0.042085 0.046761 )0

- 5 0.123916 0.0444231 0.042085 0.039747 0.035207 0.065465 0.100535 0.102873 0.175352 0.208085= 0.231465 0.149634 0, 100535= 0.091183 0.140282 Om.13794"  !! {!85 1

6(F) 6 0.144956 0.044423 0.016366 0.02338( 0.3 0.042085 0.086507 0.074817 0.20895 0.16a338 0.245493 0.180029 0205747 0.1 14564 01161324 0.123916 18727§g 1_

7 0.067803 4200000(

0.021042 0.014028 0.011690 0.025718 0.042085 0.107550 0 ,107550 0.15431] 0.198733 0.198733 0.173014 0.203409 0.133268 10EC6404 8 0.028056 0.009352 0.007014 0,O00000 0.000000 0.004676 0.016366 0.035070 0.093521 0.044423" 0.072479 0.133268 0.198733 0.128592 0.156648 0.109888 -1:',38* .

0.004676 0. 0 0.000000 0.00000 0.00000 0.002338 0.009352 0.014028 0.056113 0.046761 0.053775 0.187043 0.299266 0.243155 0,142620 004442 11103561 0000006 0005002 0.000000 0.000_0( 0.000000 0.000000 0.000000 0.000000 0.002338 0.0070134 0202338 0.049099 0.053770 0.053775 0.000000 0.011690 1036002 11 SnbUU23 0002336 093, 84130 0

.1J4051 0

00000 0000000 63879j2WYj 0000 I Iiz 000 0.0__00 4999 810 00002330 003 889 0.00000O 603 5 O

0.000000 0006 0.00000(0 9890 0119 6181 6.1,0 9

0. -4_

1297 Sheet 3 of 12

ATTACHMENT 'B 2006306 00021042 O142 +408 .1704 0004676 0.002338 0.016366 0.018704 0.018704 0+002338 0.023300 0.018704 0.016704 0.1366 0.023380 0 2470 0.000090038008 3 0.009302 0,01690 0.011690 0.009352 6.011690 0.007014 0 007014 0.004676 0.021042 0.002338 0.011L690 0+016704 0.011690 0.014028 0.014028 0.021042 6 8 4 0009352 0.021042 0.011690 0+009352 0.011690 000O2330 0.0257`8 0.009352 0.018704 0.021042 0.014028 0.018704 0.016366 0.018704 0.025718 0.028056 8288A 5 0.068a3 0.01804 0.035070 0+030304 O0.06366 00 1690 00O280561 0.0116901 0.o514371 0.60444231 0.0514371 0.0444231 0.000401 0.051437 0.102873 0.079493 0777 7 (G) 6 0.039747 0.007014 0.011690 0+009392 0.00701 0.002338 06018704 0.007014 0.0102 0.037409 0.0&4169 00O56401 0.065460 0.060789 0.123916 0.144958 0,6020 7 0.016306 0.009352 0.002338 0.000000 0.000000 0000003Ow0,002330 0.009302 0.007014 04010704 0.009352 0.037409 0.093521 0.063127 0.040761 0.095859 0.067803 04792 a 00 00000 0M000000 0.000000 0+000000 0.000000 00000000 06004676 0.002339 0.002330 O0.11690 6+023360 0+053775 0.086507 0.023390 0.039747 0.0168704 0.2660 90.002338 G0900000 0.0000000 0+000000 Gq0.000 0 00W 09006000 0,0023381 040023381 0.000c0 0.0116901 0+0327321 0.06113 0.074817 0.011690 0.060352 0,2024 10 11 0.000000 0 0 00000900 0 0 0.0000000 0 0 0.000060 0 0 60W00000

.0 0.000000 0.0009000 0.006006 0.O00000 0.000000 0.600900 0+004676 0.002336 0.004676 0.006600 0.060000 10016 0 0 0 000.0000000 0.0 0. 0. 00 0.000 0.0 0

- ;A ~037m* 2.1 "All .94 S. 771 1os 5.-,

%3v .1 .8 q0741~ 8.8 5,6 is 00 4.17 700 700. 011 4 1.71 10,941000 mm. O. 20, '~u0 .03 Notes:

1) Wind Speed Categories defined as follows Category Wind Speed (mph)

I Cairn) <-05 2 0 to 2.35

-0.5 3 235 to 3.47 4 -3.47 to <4.59 5 >-4.59 to <6.82 6 >=6082 to <9w06 7 -9.06 to <11.3 6 - 11.3 to <10353 9 -13.53 to <18.01 10 >=18.011to 22.37 11 =2237 Sheet 4 of 12

ATTACHMENT B Peach Bottom Joint Frequency Distribution 1984-1988 Tower 2 33ýwnd 150'-33' Deita T

.- p - W~indDirection Caetgory =

N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW Calms I 1 (A)

I 3 (C) 4 (D) 5 (E) 6 (F)

Sheet 5 of 12

ATTACHMENT B 11(caIn) V_____ is_

2 29 25 29 50 F4 42 27 24 20 20 7c9 184 213 150 98 50 13 3 7 5 -2 0 7 14 5 3 3 85 7 312 216 85 27 8 734 4 1 4 -2 0 3 4 2 0 0 6 48 224 56 13 6 3 M:*3 5 0 0 0 0 0 1_ 11 30 15 2 1 60 ___1_ ___ _S 67 (G) 0 0 0 0 0 0 0O 1 1 0 1 0 1  :

7 0 0 0 0 0 0 0 0 0 0 0 0 0 __ 00 _ _ 0 0_ 4:::_

0 "':

00 0 0 0 0 0 0 0 0 0 0 0 0 0 ,

9 0 _ _ 0 0 0 0 0

___ 0__ _ 0___ 0__ _ _ __0 ___ 0__ _ _ 0 0 __ _0 __ _0 __ 0 __ _0 __ 0 __ _0 __

100 0 0 0 0 0 0 0 0 0__ 0 0 0 __ 0-110 T 5 -- s I I QIV I1 3ml0 15181 13, 112 12100 15441 1008 8-1741 8045) 3551 10001 1081 "I00 ""41 43111 -9e) Rr1wi 1951 , Ming Notes:

1) Wind Spe ,d Categoris defined as follow!

Category Wind Speed (mnph) 1 (Calm) <0.5 2 >=0.5 to <2.35 3 -=2.35 to <3.47 4 -=3.47 to <4.59 5 -=4.59 to <6.82 6 >=6.82 to <9.06 7 >-9.G6 to <1 1.3 8 -=11.3 to <13.53 9 >-13.53 to l&8.I 10 -=18.01 to <22.37 11 -=22.37 Sheet 6 of 12

ATTACHMENT B Peach Bottom Joint Frequency Distribution 1984-1988 Tower 2 33 wind 1509-33'Delta T w r-e - __Wind UrectionCatg9 y:Z = 1 Ic;;;zO;FI I1 21 11 .1 J a1 7 .1 9i 101 ill 121 131 141 151 16Calm I T tal I 2

5 2(8 9

2 33C 5

24(D) 7

-3b2 5(E 3 (C) 6w 10 I1I 2Sbos J ~ 2I~1-.171 S.8T ~'o ~ 1 8547~~5 ~1.781 W I1882 ,1.411 .885 108 ~S1T RI 7S288 1 S - 31se- me 1.82 5 141 10.~

Sheet 7 of 12

ATTACHMENT B 2

I (Clm 0.067304 0.056021 0.67304 0.116042 0.194000 0.097475 0.062662 0.055700 0.046417 0.064983 0.183346 0.L2703 06494337 04346125 0.227442 0.116042 1 0.03.4812 i "9Wl21'7

_ _ .627182 3 0.016ý246 0.011604 0.00000 0.000000 0.016246- 0.032492 0.011604 0.006962 0.006962 0.011604 0.201912 0.724100 0.501300 0,197271 0.062662 0.016567 1.l9s9 4 0.00321 0.609293 OOOG0.000000 000000006962 0.009263 0.004642 0.000000 0.000000 0.013925 0.111400 0.519066 0.129967 0.030171 0.013925 0.006962 ____ .0700 5 00100 0.000000 1 0.OOO 000001 O.0000001 0.000000 0.00232110.0000001 0.00000010.00000010.023211 0.02552910.0696251 0603481210400464210.0023211 0.0000001 __ _0141071 7(G) 6 0.000000 0.000000o0.00000 0.000000 0.000000 0.000000 0.000000 0.000000 0.00000 0.000000 0.002321 0.002321 0+000000 0.002321 0.000000 0.002321 0O0m20 70.00000000000 0.000000 0.000000.000000 0.000000 0.O000 00 0 000000 0+000000 0 .000000 0.00OO MO0000 0.000000 0.000000 0.000000 0.000000 0.000000 J.000055 0.000 0.0000 0 .00000 .000000 000O0000 0.000000 0.000000 0mOOO 00O0000 0+000000 0 .000000 0.00OO MO0000 0.000000 0.000000 0.000000 0.000000 0.000000 0000000 90.0000001 0,0000001 040000001 0.000000 0.0000001OM0000001 0.0000001 0.00000010+00000010.0000001 0.00000010.0000001 0.00000010.00000010.0000001 0.000001 0.00000 10 0.000000 0.000 .0000000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 Ob...O 0.00000 0,400000 wQ 11 00000 0.00 0 0.00000 0.0000 0.000 0.000 00000 .000 0.000 0 0 .0010000 0.0 00 .0000 0.000 0.0000 0.0 00 0.000

1. 0.04 To - 1 > . . . . . 31 2..4 .7171 7071'< 4,91 1

'15 l.2t I 0 , 11. 4. 1.>6 c11 , 17>0 ... Q11 1721 0 Notes:

1) Wind Speed Categories defined as follows Category Wind Speed (Mph) 2 >=0.5 to <2.35 3 =2.35 to <3.47 4 >-3.47 to <4,599 5 >-4.59 to <6482 6 -6.,82 to <9.06 7 -=9.06 to 11.3 8 -=11.3 to <13.53 9 >=1353 to<18.01 10 >=1.801 to <22.37 11 >f22.37 Sheet 8 of 12

ATTACHMENT B Peach Bottom Joint Frequency Distribution 1984-1988 Tower 1ARiver Tower 45' River Tower wind 89'-33!Tower 1A Delta T Wind Direction Category 0  ::;0:;:

Category'1) N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW Calms Total l(Calm) 2 48 50 50 45 40 42 35 23 28 17 14 25 18 22 18 33 >2  :

3 41 33 31 44 82 90 88 27 30 14 15 8 19 20 14 38 :84 5"':

4 42 26 26 32 88 99 88 58 10 8 4 0 9 17 24 36 :7 5 78 51 47 63 92 184 249 79 38 15 9 9 14 12 105 88 T

'913 6 112 48 26 31 58 83 240 112 64 22 13 12 19 18 146 153 1 1(A) 7 103 18 17 7 22 26 121 131 77 19 23 20 27 39 151 189 991 8 90 11 2 8 3 10 27 135 50 8 1 4 21 29 160 217 77 9 78 11 4 1 1 9 10 103 44 7 10 1 22 76 267 348  :* * , ' ' : 962 10 24 1 1 0 0 2 0 11 0 1 0 0 0 28 131 105 302 11 0 0 0 0 0 2 0 0 0 0 0 11 72 43 IT3

-Sabt90-i'2t. >21 I/ 27 '.*204. 23 > 20<4>2..u>01 3" 545 sts 41:>i141 >79 7,,.<' 14% '701 <15< 1 >' 0T 7188 1 (Calm )

2 0 0 0 0 0 0 0  : 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 8 0 0 0 0 0, 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 a 0 0 0 0 0 0 0 0 0 0 0 01 2(S) 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 .0 0 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I(Calm) 2 16 17 18 7 14 17 19 8 7 3 3 6 7 6 11 10 3 19 16 15 22 22 27 29 11 6 1 2 4 3 7 13 21 4 15 10 10 30 44 30 26 6 5 1 3 4 2 B 13 22 231 5 40 18 25 29 62 73 86 39 16 14 1O 9 13 12 60 42 6 47 20 30 14 28 51 70 41 22 9 19 12 26 21 54 46 3(C) 45 10 9 5 20 41 481 41 31 10 23 17 32 51 71 73 42 9 5 1 6 13 20 48

-2o777o 18 2 6 LJ7 5

o677-7jT 20 44

• , 81

-oo 396 904 105 0 31 1o7 -11 1

1 o75 - 16 0

0i 0

10

-6' 2 o!

8 3

26 7 0 7 3 1

3 0

4 1

16 1

112 55 172 68 12 47

- r-57 181 342 110 0 0 0 01 0 0 2 0 - 0 0 0 0 15 51 25435" 9 1 (Calm) 1 Co 2 58 32 23 45 46 55 42 25 16 9 15 13 17 is 30 42 3 34 30 47 36 46 39 62 24 18 8 10 15 16 25 31 26 4r66 4 27 30 63 55 73 71 94 32 23 17 17 19 16 36 58 43 ' 74 5 1101 60 03 93 119 162 213 96 74 39J 37 481 67 68 122 go-460 4(D) 6 120 53 42 39 90 125 219 146 75 39 39 70 95 105 181 120 7 93 32 18 21 58 89 97 197 60 17 36 27 87 161 234 126 8 60 21 7 6 17 48 45 112 47 15 22 10 55 229 219 152 9 45 14 4 1 13 29 32 99 23 7 5 6 64 432 422 237 43ý 10 7 2 0 0 3 4 6 41 1 0 0 0 6 124 259 111 11 3- 0 0 0 1 4 0 0 0 0 1 31 107 431 2 65 28 29 24 36 50 69 44 27 27 27 29 32 29 48 78 3 401 32 16 32 28 59 86 36 10( 18 34 20 33 33 34 83 " 594 4 3B 25 30 35 34 68 127 45 48 30 35 25 45 35 56 59 7£ 5 87 27 35 50 47 90 171 127 87 16 43 53 73 81 192 148 90 71 -:,  :::;:3 18 6 22 134 49 84 158 C 97 21 25 12 18 228 19 36 80 143 160 72 23 23 30 63 131 164 70 1:53 5(E) 76 71 4 39 153 134 1 73 2 36 41 1 124 137 74  :540 9 29 14 1 2 17 20 18 61 1 1 5 87 159 76 12 47:3 1

1(F)

C 06 22 1 1500::20 08 440 1 00 1 1 20 ' C1 11 4 105 102 B638***,

33, 28 61 54 1(Cl4 881 71 53 21 74 *:3"*9 -*

30 19 36 631 601 6 . 70 2 6 37 48 46 30 421 , **:::,:t

• r2***¢ 23 24 31 80( 6. 4115 67 58 3 2 5 18 21 281 411 37 . 7,! 441 119! 69  !

  • ; :*% ' 0 14 15 6 22 211 331 531 105 4 2£ ill] 135= 7 1 128 60  : ;# r65 1 117 521 1 -18 5 3 1 7:i 2!4 15 8 4 30I 6 () 62811 Sheet 9 of 12

ATTACHMENT B 1(Cairn) 2 99 41 38 36 46 74 121 147 179 127 221 290 403 351 423 265 3 95 37 25 45 43 59 147 167 178 146 223 304 520 448 491 325 4 57 21 27 7 27 52 151 137 121 82 122 218 443 286 303 218 5 63 22 9 4 20 54 147 160 102 53 78 125 315 264 346 209 7(G) 6 49 6 4 2 1 28 32 6 3 29 10 6 16 90 142 191 76 7 10 1 1 0 0 4 2 15 12 3 0 1 6 81 90 17 81 1 2 0 0 0 0 6 4 0 0 2 0 16 21 10 0 00 0 0 0 0 7 3 0 0 0 0 3 6 4 10 0 0 0 a 0 0 0 i 2 0 0 0 0 0 0 0 Sotoi 6____0 7T7jiT~ i'7' Z ~W 7 1 T0~Z s 6 0 h 0 11Lr~~

• ___00 6810 ___

Notes:

1)WindSp. id Categori. dofin~das follow Wind *p9ed Category I(Calm,)

-=0.519 2.35

=2.35 to <3.47 4 =347 to <4.59

=4.5to <6.82 5

=6.62to <9.06

=9.67to <11.3 11.3 to <13.53 9 13.53 to <1.01 10 18901to <22.37 11 Sheet 10 of 12

ATTACHMENT B Peach Bottom Joint Frequency Distribution 1984-1988 Tower 1A/River Tower 45' River Tower wind 89-33' Tower 1A Delta T Wind Direction Category Trr-T~, I Wind Spee, 111 I

Cateeonv 2 A 5 6 I a 11 11 11 1, 15 1F Tnt.l 1 (A) 2 (B) 3 (C) 4 (D) 1, 5 (E) 6(F)

,ýISebtete JI I I931913 1 2R717 ij iO292 1j'81U4

!i0I1O 1.39899' 0.08719 O425281L.3139I It4 394S5I 4 l~0-99 141"571 UI1 12 3414 1~ ~19.a879y, 0441-61 O8.089814 Sheet 11 of 12

ATTACHMENT B 2 0235473 0.097519 0.090304 0.085627 0.109412 0.176010 0.287801 0.349642 0.425755 0.302072 0.525652 0.689770 0.958542 00834000 00O613 0.630307_6.804 2

-25050 0.088005 0.000403 0.107033 0.102270 0.140333 0.340642 0.397212 0.423376 0.347264 0.0530409 0.723069 1.236829 1065576 167052 00773018 773731 1

w35575 0.040049 0+064220 0.016650 0.064220 0.123683 0.350156 0.325057 0.287801 0+1950381 0.2901791 0.5185171 1053683 0.680256 0120691 0q518 .__403991_

5 14-9471 0.052327) 0.0214071 0.00095141 0.0475701 0.1284401 043496421 0.3805631 0.242000 0+126061 0.185524 0.297315 0.749233 0+627020 00822067 0497 10____

() 6 ýl116547 0.014271 0+000514 0.004757 0.002379 0.066598 0.076113 0.104+.007 023765 0.014271 0.0380056 0.214067 0.33749 045429 0.185524 ,767 7 76 023705 0.002379 0.002379 0.000000 0.000000 0.009514 04011893 0.028542 0.028542 0+007136 0.000000 0.0002379 0.014271 0.102600 0124067 0q043 _______

00wO2370 0.002379 0.004757 0.000000 0.000000 0.000000 04000000 0.014271 0.009514 0+0000001 0.000000 0.00475_) 0. 000_000) 0.030056 0 040990 00238 E_________

9 O0000001 0.000000 0.0000001 0.0000001 0.0000501 0.0000001 0.000000 0.0166501 0.007134 0+000000 0.000000 0.000000 0.000000 0+0073 6 00 427 000914 0__

0547_

10 006DO0000 0.500000 0.000000 0.000000 0.000000 0.5000000 0.000000 0.002379 0.004757 0000050 0.00000 0.000000 0.000000 0000000 0dOOO 000wDO

_______0000 000000 0.0000 0.00000 000000 20.10000 0.00000 20.002370 000000.000000 0.0000000 0.000000 0.000 0000 00000 000 0 1____

asubttaI F-.W .500 11 R",11M* 01. ,4". ,. T3*. 15 . 35415. 5 "olS 8 1

1) Wind ap o 3dCategorls defined as follows Windrpeed cetego1,y 1 (CaIlm) 2 "=0.5 51<2.35

=2.35 k <3.47 4 =3.47 ko<4.59 00 <6.82

=4.59

=6.82 (o <9.06

=9.06 to <11.3

=11.3 to <13.53 13.53 to <18.01 10 18.01 to <22.37 11 Sheet 12 of 12

ATTACHMENT C PAVAN Input and Output Files (For convenience of review, PA VAN output was shortened to include only the printout of input cards and summary of X/Q results)

Off-Gas Stack to the EAB and LPZ (Tower 2 Meteorology, RG 1.23, Revision 1 Wind Speed Categories) .............................................................................. 2 Units 2 and 3 Reactor Building Stacks, Reactor Building Personnel Access Doors, Railway Bay Doors, Roof Scuttle, and Ground-Level Hatch to EAB and LPZ (Tower 2 1.2 , Revisionoris1 Wind....Speed...C..tegories).................................................................................................................10 Meteorology; RGis1.23,ind Off-Gas Stack to Control Room Intake (209 and 280 m; Tower 2 Meteorology; RG 1.23, Revision 1 Wind Speed Categories) ...................................................... 16 Off-Gas Stack to Control Room Intake (300 and 500 m; Tower 2 Meteorology; RG 1.23, Revision I Wind Speed Categories)...................................................... 23 Off-Gas Stack to Control Room Intake (750 and 1000 m; Tower 2 Meteorology; RG 1.23, Revision I Wind Speed Categories)..................................................... 30 Off-Gas Stack to Control Room Intake (1500 and 2000 m; Tower 2 Meteorology; RG 1.23, Revision 1 Wind Speed Categories).................................................... 37 Off-Gas Stack to Control Room Intake (3000 and 4000 m; Tower 2 Meteorology; RG 1.23, Revision I Wind Speed Categories).................................................... 44 Off-Gas Stack to Control Room Intake (5000 and 6000 m; Tower 2 Meteorology; RG 1.23, Revision 1 Wind Speed Categories).................................................... 51 Units 2 and 3 Reactor Building Stacks, Reactor Building Personnel Access Doors, Railway Bay Doors, Roof Scuttle, and Ground-Level Hatch to EAB (River Tower/Tower IAA M tMeteorology; 23 RevsGo1.23,d SRevisionries 1.Wind...Speed...Categories).............................................................................................................58 Sheet 1 of 62

ATTACHMENT C Off-Gas Stack to the EAB and LPZ (Tower 2 Meteorology, RG 1.23, Revision 1 Wind Speed Categories) 1 1111 Peach Bottom Stack Release 97.5 meters 10.1-96.3 meters PB, Tower 2 84-88 met data, RG 1.23 Ri wind cats, 320 ft wind,33-316 ft Delta T 11 2 2584. 54.3152.4 97.5 0 0 0 2 6 5 0

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 2. 10. 10. 15. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

5. 6. 10. 23. 59. 25. 2. 0. 0. 1. 2. 0. 0. 0. 0. 1.

1. 3. 11. 18. 43. 40. 10. 4. 2. 2. 2. 0. 1. 3. 0. 0.

0. 6. 10. 11. 13. 17. 9. 0. 7. 4. 3. 3. 2. 3. 0. 5.

0. 1. 2. 13. 8. 3. 9. 0. 4. 3. 0. 6. 13. 7. 3. 4.

2. 4. 9. 11. 2. 3. 7. 0. 6. 2. 2. 1. 14. 5. 2. 14.

1. 2. 0. 1. 0. 1. 0. 0. 0. 0. 0. 2. 10. 2. 0. 1.

1. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 1. 6. 5. 1. 1.

0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 1. 1. 9. 5. 0. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0.

1. 7. 5. 8. 21. 5. 1. 0. 0. 0. 0. 0. 1. 0. 1. 0.

12. 15. 9. 11. 34. 19. 6. 1. 1. 4. 3. 1. 3. 1. 2. 3.

1. 11. 11. 18. 6. 21. 11. 4. 4. 4. 4. 2. 3. 5. 1. 7.

2. 5. 4. 2. 5. 9. 13. 5. 17. 9. 6. 5. 13. 2. 1. 12.

3. 0. 3. 1. 3. 0. 9. 6. 14. 5. 6. 7. 10. 8. 3. 15.

8. 2. 1. 1. 0. 2. 5. 3. 22. 5. 3. 13. 21. 15. 6. 20.

1. 3. 0. 0. 0. 1. 1. 1. 6. 1. 1. 2. 11. 12. 5. 6.

0. 0. 1. 0. 0. 0. 0. 0. 1. 1. 0. 1. 7. 10. 0. 0.

0. 2. 2. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 3. 10. 14. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

4. 7. 11. 16. 31. 17. 2. 0. 1. 0. 0. 0. 0. 0. 0. 1.

18. 14. 15. 17. 17. 40. 6. 4. 11. 4. 7. 3. 2. 2. 3. 16.

26. 12. 8. 11. 10. 21. 26. 13. 20. 13. 9. 4. 16. 6. 8. 35.

21. 6. 3. 8. 5. 11. 31. 10. 40. 14. 15. 14. 23. 13. 9. 45.

8. 8. 0. 3. 2. 3. 15. 12. 37. 17. 11. 15. 11. 21. 18. 43.

14. 2. 4. 2. 2. 3. 7. 5. 48. 18. 16. 24. 48. 45. 26. 74.

4. 1. 0. 0. 1. 2. 0. 1. 10. 0. 3. 3. 29. 27. 22. 14.

1. 3-. 0. 0. 0. 0. 0. 0. 1. 0. 2. 2. 16. 33. 12. 4.

18. 18. 28. 26. 28. 20. 14. 13. 12. 6. 9. 6. 8. 19. 8. 10.

41. 40. 80. 93. 87. 66. 31. 22. 29. 17. 23. 9. 18. 19. 28. 40.

67. 53. 78. 99. 130. 77. 54. 50. 39. 31. 28. 24. 30. 19. 40. 50.

209. 119. 120. 174. 227. 179. 192. 134. 171. 110. 98. 90. 89. 59. 118. 231.

216. 175. 125. 187. 215. 168. 282. 234. 320. 203. 128. 80. 109. 115. 186. 390.

237. 151. 118. 123. 134. 129. 212. 204. 330. 193. 142. 89. 134. 160. 235. 438.

233. 99. 80. 54. 103. 102. 129. 147. 274. 132. 80. 103. 142. 196. 332. 406.

278. 113. 52. 44. 87. 94. 107. 58. 345. 108. 91. 139. 311. 543. 821. 694.

69. 28. 13. 11. 24. 24. 15. 10. 96. 21. 15. 20. 211. 392. 489. 230.

25. 10. 10. 2. 18. 7. 8. 1. 40. 6. 5. 12. 124. 227. 256. 94.

21. 15. 15. 20. 24. 17. 26. 16. 26. 16. 17. 19. 30. 17. 23. 11.

39. 29. 21. 41. 36. 43. 35. 43. 44. 40. 42. 35. 24. 19. 16. 23.

Sheet 2 of 62

ATTACHMENT C

50. 43. 35. 51. 65. 48. 90. 69. 60. 65. 63. 36. 42. 23. 30. 36.

137. 92. 91. 138. 168. 113. 186. 176. 263. 196. 164. 111. 102. 82. 112. 115.

177. 131. 95. 87. 123. 134. 205. 234. 432. 273. 191. 116. 120. 116. 154. 200.

180. 79. 69. 40. 68. 116. 152. 195. 423. 257. 165. 149. 193. 161. 255. 213.

102. 30. 25. 9. 37. 61. .88. 142. 284. 182. 99. 157. 213. 232. 277. 276.

110. 26. 17. 6. 39. 46. 69. 103. 367. 150. 159. 177. 417. 441. 493. 336.

24. 10. 3. 4. 11. 20. 16. 11. 72. 19. 27. 38. 88. 124. 101. 48.

8. 1. 6. 1. 21. 3. 9. 1. 9. 2. 2. 2. 10. 12. 10. 14.

16. 7. 13. 10. 11. 12. 10. 12. 12. 12. 15. 15. 14. 13. 13. 7.

10. 12. 9. 16. 20. 11. 18. 20. 11. 20. 17. 18. 16. 15. 13. 15.

26. 13. 14. 10. 13. 18. 27. 34. 33. 29. 27. 36. 22. 18. 18. 20.

53. 19. 18. 17. 15. 28. 43. 44. 75. 89. 99. 64. 43. 39. 60. 59.

62. 19. 7. 10. 14. 18. 37. 32. 89. 72. 105. 77. 88. 49. 69. 53.

29. 9. 6. 0. 5. 11. 18. 46. 46. 46. 66. 85. 85. 74. 87. 57.

12. 4. 3. 0. 0. 2. 7. 15. 40. 19. 31. 57. 85. 55. 67. 47.

2. 0. 0. 0. 0. 1. 4. 6. 24. 20. 23. 80. 128. 104. 61. 19.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 1. 21. 23. 23. 0. 5.

1. 0. 0. 0. 4. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0.

7. 9. 6. 6. 8. 2. 1. 7. 8. 8. 1. 10. 8. 8. 7. 10.

4. 5. 5. 4. 5. 3. 3. 2. 9. 1. 5. 8. 5. 6. 6. 9.

4. 9. 5. 4. 5. 1. 11. 4. 8. 9. 6. 8. 7. 8. 11. 12.

35. 8. 15. 13. 7. 5. 12. 5. 22. 19. 22. 19. 25. 22. 44. 34.

17. 3. 5. 4. 3. 1. 8. 3. 6. 16. 36. 25. 28. 26. 53. 62.

7. 4. 1. 0. 0. 1. 4. 3. 8. 4. 16. 40. 27. 20. 41. 29.

0. 0. 0. 0. 0. 0. 2. 1. 1. 5. 10. 23. 37. 10. 17. 8.

1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 5. 14. 24. 32. 5. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 1. 2. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.

7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.

0031.0018.0012.0024.0031.0031.0024.0000.0000.0000.0000.0000.0000.0000.0000.0031.

7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.

0055.0061.0128.0104.0073.0098.0104.0085.0110.0085.0085.0067.0048.0067.0043.0043.

Sheet 3 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/21/08 PRINTOUT OF INPUT.CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Stack Release 3 97.5 meters 10.1-96.3 meters 4

5 PB, Tower 2 84-88 met data, RG 1.23 Ri wind cats, 320 ft wind,33-316 ft Delta T 6 11 42771 7 0.500 2584.000 54.300 152.400 97.500 8 0.000 0.000 0.000 2.000 6.000 5.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 2.000 10.000 10.000 15.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 5.000 6.000 10.000 23.000 59.000 25.000 2.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 1.000 9 1.000 3.000 11.000 18.000 43.000 40.000 10.000 4.000 2.000 2.000 2.000 0.000 1.000 3.000 0.000 0.000 9 0.000 6.000 10.000 11.000 13.000 17.000 9.000 0.000 7.000 4.000 3.000 3.000 2.000 3.000 0.000 5.000 9 0.000 1.000 2.000 13.000 8.000 3 .000 9.000 0.000 4.000 3.000 0.000 6.000 13.000 7.000 3.000 4.000 9 2.000 4.000 9.000 11.000 2.000 3 .000 7.000 0.000 6.000 2.000 2.000 1.000 14.000 5.000 2.000 14.000 9 1.000 2.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 2.000 0.000 1.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 6.000 5.000 1.000 1.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 1.000 1.000 9.000 5.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 7.000 5.000 8.000 21.000 5.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 9 12.000 15.000 9.000 11.000 34.000 19.000 6.000 1.000 1.000 4.000 3.000 1.000 3.000 1.000 2.000 3.000 9 1.000 11.000 11.000 18.000 6.000 21.000 11.000 4.000 4.000 4.000 4.000 2.000 3.000 5.000 1.000 7.000 9 2.000 5.000 4.000 2.000 5.000 9.000 13.000 5.000 17.000 9 000 6.000 5.000 13.000 2.000 1.000 12.000 9 3.000 0.000 3 .000 1.000 3.000 0.000 9.000 6.000 14.000 5.000 6.000 7.000 10.000 8.000 3.000 15.000 9 8.000 2.000 1.000 1.000 0.000 2.000 5.000 3.000 22.000 5.000 3.000 13.000 21.000 15.000 6.000 20.000 9 1.000 3.000 0.000 0.000 0.000 1.000 1.000 1.000 6.000 1.000 1.000 2.000 11.000 12.000 5.000 6.000 9

• 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 7.000 10.000 0.000 0.000 9 0.000 2.000 2.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 3.000 10.000 14.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 4.000 7.000 11.000 16.000 31.000 17.000 2.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 9 18.000 14.000 15.000 17.000 17.000 40.000 6.000 4.000 11.000 4.000 7.000 3.000 2.000 2.000 3.000 16.000 9 26.000 12.000 8.000 11.000 10.000 21.000 26.000 13.000 20.000 13.000 9.000 4.000 16.000 6.000 8.000 35.000 9 21.000 6.000 3 .000 8.000 5.000 11.000 31.000 10.000 40.000 14.000 15.000 14.000 23.000 13.000 9.000 45.000 9 8.000 8.000 0.000 3.000 2.000 3.000 15.000 12.000 37.000 17.000 11.000 15.000 11.000 21.000 18.000 43.000 9 14.000 2.000 4.000 2.000 2.000 3.000 7.000 5.000 48.000 18.000 16.000 24.000 48.000 45.000 26.000 74.000 9 4.000 1.000 0.000 0.000 1.000 2.000 0.000 1.000 10.000 0.000 3.000 3.000 29.000 27.000 22.000 14.000 9 1.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 2.000 16.000 33.000 12.000 4.000 9 18.000 18.000 28.000 26.000 28.000 20.000 14.000 13.000 12.000 6.000 9.000 6.000 8.000 19.000 8.000 10.000 9 41.000 40.000 80.000 93.000 87.000 66.000 31.000 22.000 29.000 17.000 23.000 9.000 18.000 19.000 28.000 40.000 9 67.000 53.000 78.000 99.000130.000 77.000 54.000 50.000 39.000 31.000 28.000 24.000 30.000 19.000 40.000 50.000 9 209.000119.000120.000174.000227.000179.000192.000134.000171.000110.000 98.000 90.000 89.000 59.000118.000231.000 9 216.000175.000125.000187.000215.000168.000282.000234.000320.000203.000128.000 80.000109.000115.000186.000390.000 9 237.000151.000118.000123.000134.000129.000212.000204.000330.000193.000142.000 89.000134.000160.000235.000438.000 9 233.000 99.000 80.000 54.000103.000102. 000129.000147.000274.000132.000 80.000103.000142.000196.000332.000406.000 9 278.000113.000 52.000 44.000 87.000 94.000107.000 58.000345.000108.000 91.000139.000311.000543.000821.000694.000 9 69.000 28.000 13.000 11.000 24.000 24.000 15.000 10.000 96.000 21,000 15.000 20.000211.000392.000489.000230.000 9 25.000 10.000 10.000 2.000 18.000 7.000 8.000 1.000 40.000 6.000 5.000 12.000124.000227.000256.000 94.000 Sheet 4 of 62

ATTACHMENT C 9 21.000 15.000 15.000 20.000 24.000 17.000 26.000 16.000 26.000 16.000 17.000 19.000 30.000 17.000 23.000 11.000 9 39.000 29.000 21.000 41.000 36.000 43.000 35.000 43.000 44.000 40.000 42.000 35.000 24.000 19.000 16.000 23.000 9 50.000 43.000 35.000 51.000 65.000 48.000 90.000 69.000 60.000 65.000 63.000 36.000 42.000 23.000 30.000 36.000 9 137.000 92.000 91.000138.000168.000113.000186.000176.000263.000196.000164.000111.000102.000 82.000112.000115.000 9 177.000131.000 95.000 87.000123.000134.000205.000234.000432.000273.000191.000116. 000120.000116.000154.000200.000 180.000 79.000 69.000 40.000 68.000116.000152.000195.000423.000257.000165.000149.000193.000161.000255.000213.000 102.000 30.000 25.000 9.000 37.000 61.000 88.000142.000284.000182.000 99.000157.000213.000232.000277.000276.000 110.000 26.000 17.000 6.000 39.000 46.000 69. 000103.000367.000150.000159.000177.000417.000441.000493.000336.000 24.000 10.000 3.000 4.000 11.000 20.000 16.000 11.000 72.000 19.000 27.000 38. 000 88.000124.000101.000 48.000 8.000 1.000 6.000 1.000 21.000 3.000 9.000 1.000 9.000 2.000 2.000 2.000 10.000 12 .000 10.000 14.000 16.000 7.000 13.000 10.000 11.000 12.000 10.000 12.000 12.000 12.000 15.000 15.000 14.000 13.000 13.000 7.000 10.000 12.000 9.000 16.000 20.000 11.000 18.000 20.000 11.000 20.000 17.000 18.000 16.000 15.000 13.000 15.000 26.000 13.000 14.000 10.000 13.000 18.000 27.000 34.000 33.000 29.000 27.000 36.000 22.000 18.000 18.000 20.000 53.000 19.000 18.000 17.000 15.000 28.000 43.000 44.000 75.000 89.000 99.000 64.000 43.000 39.000 60.000 59.000 62.000 19.000 7.000 10.000 14.000 18.000 37.000 32.000 89.000 72.000105.000 77.000 88.000 49.000 69.000 53.000 29.000 9.000 6.000 0.000 5.000 11.000 18.000 46.000 46.000 46.000 66.000 85.000 85.000 74.000 87.000 57.000 12.000 4.000 3.000 0.000 0.000 2.000 7.000 15.000 40.000 19.000 31.000 57.000 85.000 55.000 67.000 47.000 2.000 0.000 0.000 0.000 0.000 1.000 4.000 6.000 24.000 20.000 23.000 80.000128.000104.000 61.000 19.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 1.000 21.000 23.000 23.000 0.000 5.000 1.000 0.000 0.000 0.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 0.000 0.000 7.000 9.000 6.000 6.000 8.000 2.000 1.000 7.000 8.000 8.000 1.000 10.000 8.000 8.000 7.000 10.000 4.000 5.000 5.000 4.000 5.000 3.000 3.000 2.000 9.000 1.000 5.000 8.000 5.000 6.000 6.000 9.000 4.000 9.000 5.000 4.000 5.000 1.000 11.000 4.000 8.000 9.000 6.000 8.000 7.000 8.000 11.000 12.000 35.000 8.000 15.000 13.000 7.000 5.000 12.000 5.000 22.000 19.000 22.000 19.000 25.000 22.000 44.000 34.000 17.000 3.000 5.000 4.000 3.000 1.000 8.000 3.000 6.000 16.000 36.000 25.000 28.000 26.000 53.000 62.000 7.000 4.000 1.000 0.000 0.000 1.000 4.000 3.000 8.000 4.000 16.000 40.000 27.000 20.000 41.000 29.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 5.000 10.000 23 .000 37.000 10.000 17.000 8.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 5.000 14.000 24.000 32.000 5.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 823. 823. 823. 823 823. 823.

823. 823. 823. 823. 823. 823. 823. 823. 823. 823. 11 7300. 7300 . 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300.

7300. 7300. 7300. 7300. 7300. 7300. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 13 823. 823.

823. 823. 823. 823. 823. 823. 823. 823. 823. 823. 823. 823. 823. 823.

14 31. 18. 12. 24. 31. 31. 24. 0. 0. 0. 0. 0. 0. 0. 0. 31. 13 7300. 7300.

7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300.

14 55. 61. 128. 104. 73. 98. 104. 85. 110. 85. 85. 67. 48. 67. 43. 43.

Sheet 5 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/21/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: PB, Tower 2 84-88 met data, RG 1.23 Ri wind cats, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 823. 2.47E-06 8.45E-07 4.94E-07 1. 54E-07 2.90E-08 3.74E-09 4.0 S SSW 823. 2 .43E-06 8. 70E-07 5.20E-07 1. 70E-07 3 .43E-08 4. 82E-09 4.1 SSW SW 823. 6. 02E-06 1. 88E-06 1.05E-06 2. 98E-07 4.87E-08 5. 31E-09 43.7 SW WSW 823. 5.10E-06 1. 81E-06 1.08E-06 3. 53E-07 7. 05E-08 9.84E-09 27.3 WSW W 823. 3.75E-06 1. 54E-06 9.83E-07 3.73E-07 9.29E-08 1. 69E-08 13.4 W WNW 823. 4.51E-06 1. 66E-06 1.01E-06 3 .40E-07 7. 14E-08 1. 06E-08 19.2 WNW NW 823. 4. 90E-06 1. 56E-06 8.79E-07 2.54E-07 4.26E-08 4. 81E-09 26.5 NW NNW 823. 3.49E-06 8. 84E-07 4.44E-07 1.OOE-07 1.17E-08 8. 55E-10 12.8 NNW N 823. 5. 56E-06 1. 55E-06 8.22E-07 2.06E-07 2.83E-08 2. 50E-09 36.1 N NNE 823. 3.33E-06 9.22E-07 4.85E-07 1.21E-07 1.64E-08 1. 42E-09 11.6 NNE NE 823. 3 .38E-06 9. 08E-07 4. 71E-07 1. 13E-07 1.46E-08 1.19E-09 12.4 NE ENE 823. 1. 99E-06 5. 82E-07 3 .15E-07 8.33E-08 1.23E-08 1.19E-09 3.4 ENE E 823. 1.50E-06 5. 31E-07 3. 16E-07 1. 03E-07 2.04E-08 2. 82E-09 1.8 E ESE 823. 1. 89E-06 6. 03E-07 3. 40E-07 9. 82E-08 1.65E-08 1. 86E-09 3.5 ESE SE 823. 1.41E-06 4. 13E-07 2. 23E-07 5.85E-08 8.58E-09 8. 20E-10 1.2 SE SSE 823. 1. 98E-06 7. 65E-07 4. 76E-07 1.69E-07 3.85E-08 6. 28E-09 1.6 SSE MAX X/Q 6. 02E-06 TOTAL HOURS AROUND SITE: 222.9 SRP 2.3.4 823. 9.17E-06 3.24E-06 1.92E-06 6.22E-07 1.23E-07 1. 69E-08 SITE LIMIT 0.OOE+00 0.OOE+00 0.OOE+00 0. OOE+00 0. OOE+00 1. 69E-08 0.5 PERCENT X/Q TO AN INDIVIDUAL IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 823. 5.30E-05 SSW 823. 4.79E-05 SW 823. 4.58E-05 WSW 823. 5.01E-05 W 823. 5.30E-05 WNW 823. 5.30E-05 NW 823. 5.01E-05 NNW 823. 4.22E-05 N 823. 4.22E-05 NNE 823. 4.22E-05 NE 823. 4.22E-05 ENE 823. 4.22E-05 E 823. 4.22E-05 ESE 823. 4.22E-05 Sheet 6 of 62

ATTACHMENT C SE 823. 4.22E-05 SSE 823. 5.30Ez05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 7 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/21/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: PB, Tower 2 84-88 met data, RG 1.23 Ri wind cats, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 7300. 2.02E-06 9. 61E-07 6.62E-07 2. 95E-07 9. 24E-08 2.23E-08 3.4 S SSW 7300. 1.94E-06 8. 75E-07 5.88E-07 2.48E-07 7. 20E-08 1.58E-08 3.2 SSW SW 7300. 5. 02E-06 2.20E-06 1.45E-06 5. 93E-07 1.64E-07 3.39E-08 36.9 SW WSW 7300. 4. 33E-06 1. 92E-06 1.28E-06 5. 27E-07 1.48E-07 3.13E-08 25.8 WSW W 7300. 3.09E-06 1.41E-06 9.56E-07 4. 09E-07 1.21E-07 2.73E-08 10.0 W WNW 7300. 3.84E-06 1.73E-06 1.16E-06 4. 86E-07 1.40E-07 3.04E-08 19.5 WNW NW 7300. 4.96E-06 2.24E-06 1.50E-06 6. 32E-07 1.83E-07 4.OOE-08 32.1 NW NNW 7300. 3 .42E-06 1. 56E-06 1.06E-06 4. 51E-07 1.33E-07 2.99E-08 14.3 NNW N 7300. 5. 67E-06 2.71E-06 1.88E-06 8. 44E-07 2.67E-07 6.56E-08 43.7 N NNE 7300. 3.30E-06 1. 53E-06 1.04E-06 4. 51E-07 1.36E-07 3.12E-08 13.2 NNE NE 7300. 3.31E-06 1 .49E-06 1.00E-06 4. 24E-07 1.23E-07 2.70E-08 13.6 NE ENE 7300. 2. 01E-06 9.11E-07 6.13E-07 2. 60E-07 7.57E-08 1.68E-08 4.0 ENE E 7300. 1. 52E-06 7 .20E-07 4.96E-07 2. 21E-07 6. 90E-08 1.66E-08 2.2 E ESE 7300. 1. 85E-06 9. 04E-07 6.31E-07 2. 89E-07 9.44E-08 2.40E-08 3.6 ESE SE 7300. 1.30E-06 6. 65E-07 4.75E-07 2. 29E-07 8. 06E-08 2.24E-08 1.4 SE SSE 7300. 1. 53E-06 7. 79E-07 5.56E-07 2. 68E-07 9.40E-08 2.61E-08 1.3 SSE MAX X/Q 5. 67E-06 TOTAL HOURS AROUND SITE: 228.2 SRP 2.3.4 7300. 9. 05E-06 4. 01E-06 2.67E-06 1.10E-06 3. 1OE-07 6.56E-08 SITE LIMIT 0. OOE+00 0. OOE+00 0.OOE+00 0. OOE+00 0. OOE+00 6.56E-08 0.5 PERCENT X/Q TO AN INDIVIDUAL IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 7300. 9.20E-06 SSW 7300. 9.80E-06 SW 7300. 1.75E-05 WSW 7300. 1.75E-05 W 7300. 1.13E-05 WNW 7300. 1.65E-05 NW 7300. 1.75E-05 NNW 7300. 1.33E-05 N 7300. 1.75E-05 NNE 7300. 1.33E-05 NE 7300. 1.33E-05 ENE 7300. 1.05E-05 E 7300. 8.58E-06 ESE 7300. 1.05E-05 Sheet 8 of 62

ATTACHMENT C SE 7300. 8.*19E-06 SSE 7300. 8.19E-06

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 9 of 62

ATTACHMENT C Units 2 and 3 Reactor Building Stacks. Reactor Building Personnel Access Doors, Railway Bay Doors, Roof Scuttle, and Ground-Level Hatch to EAJI and LPZ (Tower 2 Meteorology; RG 1.23. Revision 1 Wind Speed Categories) 1 1111 Peach Bottom Ground Release 10.1 meters 10.1-45.7 meters Peach Bottom, Tower 2 84-88 met data, 33 ft wind,33-150 ft Delta T 11 0 2584. 54.3 10.0 10.1 0 0 0 10 54 26 15

37. 63. 66. 49. 22. 20. 12. 12. 4. 0. 0. 4. 5. 10. 19. 17.

51. 71. 76. 94. 83. 59. 38. 21. 4. 3. 4. 3. 11. 6. 7. 26-.

67. 41. 27. 27. 37. 56. 43. 26. 12. 6. 14. 8. 25. 24. 17. 46.

95. 35. 4. 1. 7. 35. 62. 48. 42. 28. 29. 23. 57. 65. 51. 125.

26. 7. 1. 0. 0. 14. 9. 20. 59. 22. 33. 26. 45. 34. 18. 88.

12. 0. 0. 0. 0. 1. 2. 13. 46. 14. 16. 9. 21. 12. 12. 32.

2. 0. 0. 0. 0. 0. 0. 4. 16. 4. 2. 1. 4. 8. 6. 6.

0. 0. 0. 0. 0. 0. 0. 4. 8. 1. 2. 1. 3. 5. 1. 2.

0. 0. 0. 0. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

25. 32. 31. 18. 16. 8. 10. 3. 5. 1. 2. 1. 7. 3. 6. 15.

35. 24. 33. 49. 45. 36. 13. 10. 7. 1. 4. 5. 8. 9. 3. 23.

37. 27. 8. 13. 8. 19. 18. 14. 14. 12. 13. 4. 16. 15. 11. 35.

97. 13. 3. 2. 4. 10. 34. 47. 59. 25. 42. 31. 40. 45. 42. 98.

42. 2. 0. 0. 1. 3. 12. 25. 85. 25. 24. 17. 24. 37:- 51. 117.

7. 0. 0. 0. 0. 1. 1. 17. 66. 24. 12. 14. 30. 40. 43. 71.

4. 0. 0. 0. 0. 4. 0. 8. 27. 7. 2. 0. 7. 12. 19. 18.

1. 0. 0. 0. 0. 0. 0. 3. 10. 0. 2. 0. 0. 10. 13. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

18. 24. 10. 16. 10. 7. 7. 1. 3. 0. 2. 2. 3. 4. 4. 11.

14. 23. 17. 32. 25. 20. 4. 4. 3. 0. 3. 2. 3. 3. 5. 22.

23. 6. 1. 7. 7. 8. 14. 14. 13. 4. 3. 7. 14. 9. 11. 22.

33. 4. 2. 1. 2. 2. 16. 34. 48. 17. 14. 10. 19. 25. 25. 75.

11. 0. 0. 0. 0. 1. 8. 13. 40. 19. 17. 13. 25. 22. 40. 95.

6. 1. 0. 0. 0. 0. 0. 8. 33. 15. 13. 13. 18. 30. 44. 48.

3. 0. 0. 0. 1. 0. 0. 3. 10. 1. 0. 0. 6. 12. 11. 19.

1. 0. 0. 0. 0. 1. 0. 2. 6. 0. 0. 0. 0. 8. 15. 8.

0. 0. 0. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

179. 185. 272. 182. 128. 91. 79. 101. 65. 41. 40. 49. 67. 69. 99. 117.

216. 158. 169. 138. 170. 86. 78. 132. 116. 51. 39. 57. 56. 62. 93. 125.

186. 98. 51. 21. 35. 75. 115. 185. 130. 62. 45. 53. 79. 84. 145. 198.

314. 59. 15. 14. 28. 66. 242. 328. 323. 148. 111. 103. 164. 266. 446. 568.

191. 10. 0. 0. 4. 9. 78. 175. 256. 81. 84. 54. 133. 325. 538. 556.

85. 2. 0. 0. 0. 4. 23. 44. 138. 42. 25. 34. 110. 273. 421. 324.

25. 0. 0. 0. 0. 0. 5. 15. 40. 14. 4. 7. 49. 96. 217. 135.

17. 0. 0. 0. 0. 0.. 2. 8. 28. 4. 2. 2. 21. 28. 88. 70.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 0. 0. 0. 1. 2. 7.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 3.

Sheet 10 of 62

ATTACHMENT C 296. 270. 315. 300. 374. 310. 315. 294. 286. 192. 167. 234. 248. 267. 332. 260.

231. 152. 102. 86. 147. 162. 236. 309. 353. 185. 162. 163. 202. 235. 279. 171.

201. 54. 51. 35. 77. 103. 164. 285. 310. 172. 126. 154. 235. 315. 276. 235.

216. 35. 26. 34. 26. 63. 211. 355. 388. 210. 181. 250. 381. 601. 558. 432.

84. 5. 1. 5. 9. 23. 54. 83. 196. 49. 46. 65. 139. 228. 274. 228.

21. 2. 0. 0. 0. 5. 20. 18. 63. 15. 16. 15. 41. 55. 88. 71.

7. 0. 0. 0. 0. 0. 2. 10. 28. 5. 3. 3. 8. 10. 20. 16.

2. 0. 0. 0. 0. 0. 0. 3. 16. 1. 0. 0. 2. 5. 3. 6.

0. 0. 0. 0. 0. 0. 0. 0. 1. 0. 0. 0. 1. 0. 0. 1.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

115. 72. 69. 85. 151. 161. 97. 71. 90. 128. 169. 228. 294. 257. 215. 114.

22. 9. 7. 7. 30. 64. 32. 29. 31. 70. 126. 225. 208. 160. 116. 50.

6. 0. 1. 1. 2. 12. 20. 10. 24. 29. 49. 116. 135. 89. 66. 26.

1. 0. 4. 1. 1. 2. 4. 8. 24. 17. 46. 127. 79. 47. 23. 10.

0. 0. 0. 0. 0. 0. 0. 0. 2. 0. 3. 12. 3. 2. 2. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

29. 25. 29. 50. 84. 42. 27. 24. 20. 28. 79. 184. 213. 150. 98. 50.

7. 5. 0. 0. 7. 14. 5. 3. 3. 5. 87. 312. 216. 85. 27. 8.

1. 4. 0. 0. 3. 4. 2. 0. 0. 6. 48. 224. 56. 13. 6. 3.

0. 0. 0. 0. 0. 1. 0. 0. 0. 1. 11. 30. 15. 2. 1. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 0. 1. 0. 1.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.

7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

Sheet 11 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Ground Release 3 10.1 meters 10.1-45.7 meters 4

5 Peach Bottom, Tower 2 84-88 met data, 33 ft wind,33-150 ft Delta T 6 11 43088 0 7 0.500 2584.000 54.300 10.000 10.100 0.000 0.000 0.000 10.000 54.000 26.000 15.000 37.000 63.000 66.000 49.000 22.000 20.000 12.000 12 .000 4.000 0.000 0.000 4.000 5.000 10.000 19.000 17.000 51.000 71.000 76.000 94.000 83.000 59.000 38.000 21.000 4.000 3.000 4.000 3.000 11.000 6.000 7.000 26.000 67.000 41.000. 27.000 27.000 37.000 56.000 43.000 26.000 12.000 6.000 14.000 8.000 25.000 24.000 17.000 46.000 95.000 35.000 4.000 1.000 7.000 35.000 62.000 48.000 42.000 28.000 29.000 23.000 57.000 65.000 51.000125.000 26.000 7.000 1.000 0.000 0.000 14.000 9.000 20.000 59.000 22.000 33.000 26.000 45.000 34.000 18.000 88.000 12.000 0.000 0.000 0.000 0.000 1.000 2.000 13.000 46.000 14.000 16.000 9.000 21.000 12.000 12.000 32.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 4.000 16.000 4.000 2.000 1.000 4.000 8.000 6.000 6.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 4.000 8.000 1.000 2.000 1.000 3.000 5.000 1.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 25.000 32.000 31.000 18.000 16.000 8.000 10.000 3.000 5.000 1.000 2.000 1.000 7.000 3.000 6.000 15.000 35.000 24.000 33.000 49.000 45.000 36.000 13.000 10.000 7.000 1.000 4.000 5.000 8.000 9.000 3.000 23.000 37.000 27.000 8.000 13.000 8.000 19.000 18.000 14.000 14.000 12.000 13.000 4.000 16.000 15.000 11.000 35.000 97.000 13.000 3.000 2.000 4.000 10.000 34.000 47.000 59.000 25.000 42.000 31.000 40.000 45.000 42.000 98.000 42.000 2.000 0.000 0.000 1.000 3.000 12.000 25.000 85.000 25.000 24.000 17.000 24.000 37.000 51.000117.000 7.000 0.000 0.000 0.000 0.000 1.000 1.000 17.000 66.000 24.000 12.000 14.000 30.000 40.000 43.000 71.000 4.000 0.000 0.000 0.000 0.000 4.000 0.000 8.000 27.000 7.000 2.000 0.000 7.000 12.000 19.000 18.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 3.000 10.000 0.000 2.000 0.000 0.000 10.000 13.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 18.000 24.000 10.000 16.000 10.000 7.000 7.000 1.000 3.000 0.000 2.000 2.000 3.000 4.000 4.000 11.000 14.000 23.000 17.000 32.000 25.000 20.000 4.000 4.000 3.000 0.000 3.000 2.000 3.000 3.000 5.000 22.000 9 23.000 6.000 1.000 7.000 7.000 8.000 14.000 14.000 13.000 4.000 3.000 7.000 14.000 9.000 11.000 22.000 9 33.000 4.000 2.000 1.000 2.000 2.000 16.000 34.000 48.000 17.000 14.000 10.000 19.000 25.000 25.000 75.000 9 11.000 0.000 0.000 0.000 0.000 1.000 8.000 13.000 40.000 19.000 17.000 13.000 25.000 22.000 40.000 95.000 9 6.000 1.000 0.000 0.000 0.000 0.000 0.000 8.000 33.000 15.000 13.000 13.000 18.000 30.000 44.000 48.000 9 3 .000 0.000 0.000 0.000 1.000 0.000 0.000 3.000 10.000 1.000 0.000 0.000 6.000 12.000 11.000 19.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 6.000 0.000 0.000 0.000 0.000 8.000 15.000 8.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 179.000185.000272.000182.000128.000 91.000 79.000101.000 65.000 41.000 40.000 49.000 67.000 69.000 99.000117.000 9 216.000158.000169.000138.000170.000 86.000 78.000132.000116.000 51.000 39.000 57.000 56.000 62.000 93.000125.000 9 186.000 98.000 51.000 21.000 35.000 75.000115.000185.000130.000 62.000 45.000 53.000 79.000 84.000145.000198.000 9 314.000 59.000 15.000 14.000 28.000 66.000242.000328.000323.000148. 000111.000103.000164.000266.000446.000568.000 9 191.000 10.000 0.000 0.000 4.000 9.000 78.000175.000256.000 81.000 84.000 54.000133.000325.000538.000556.000 9 85.000 2.000 0.000 0.000 0.000 4.000 23.000 44.000138.000 42.000 25.000 34.000110.000273.000421.000324.000 9 25.000 0.000 0.000 0.000 0.000 0.000 5.000 15.000 40.000 14.000 4.000 7.000 49.000 96.000217.000135.000 9 17.000 0.000 0.000 0.000 0.000 0.000 2.000 8.000 28.000 4.000 2.000 2.000 21.000 28.000 88.000 70.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 0.000 0.000 0.000 1.000 2.000 7.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 Sheet 12 of 62

ATTACHMENT C 9 296.000270.000315.000300.000374.000310.000315.000294.000286.000192.000167.000234.000248.000267.000332.000260.000 9 231.000152.000102.000 86.000147.000162.000236.000309.000353.000185.000162.000163.000202.000235.000279.000171.000 9 201.000 54.000 51.000 35. 000 77.000103.000164.000285.000310.000172.000126.000154.000235. 000315.000276.000235.000 9 216.000 35.000 26.000 34.000 26.000 63.000211.000355.000388.000210.000181.000250.000381.000601.000558.000432.000 9 84.000 5.000 1.000 5.000 9.000 23.000 54.000 83.000196.000 49.000 46.000 65.000139.000228.000274.000228.000 9 21.000 2.000 0.000 0.000 0.000 5.000 20.000 18.000 63.000 15.000 16.000 15.000 41.000 55.000 88.000 71.000 9 7.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 28.000 5.000 3.000 3.000 8.000 10.000 20.000 16.000 9 2.000 0.000 0.000 0.000 0.000 0.000 0.000 3.000 16.000 1.000 0.000 0.000 2.000 5.000 3.000 6.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 1.000 0.000 0.000 1.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 115.000 72.000 69.000 85.000151.000161.000 97.000 71.000 90.000128.000169.000228.000294.000257.000215.000114.000 9 22.000 9.000 7.000 7.000 30.000 64.000 32.000 29.000 31.000 70.000126.000225.000208.000160.000116.000 50.000 9 6.000 0.000 1.000 1.000 2.000 12.000 20.000 10.000 24.000 29.000 49.000116.000135.000 89.000 66.000 26.000 9 1.000 0.000 4.000 1.000 1.000 2.000 4.000 8.000 24.000 17.000 46.000127.000 79.000 47.000 23.000 10.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 0.000 3.000 12.000 3.000 2.000 2.000 4.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 29.000 25.000 29.000 50.000 84.000 42.000 27.000 24.000 20.000 28.000 79.000184.000213.000150.000 98.000 50.000 9 7.000 5.000 0.000 0.000 7.000 14.000 5.000 3.000 3.000 5.000 87.000312.000216.000 85.000 27.000 8.000 9 1.000 4.000 0.000 0.000 3.000 4.000 2.000 0.000 0.000 6.000 48.000224.000 56.000 13.000 6.000 3.000 9 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 1.000 11.000 30.000 15.000 2.000 1.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 0.000 1.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 2.3 50 3.470 4.590 6. 820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 823. 823. 823. 823. 823. 823.

823

• 823. 823. 82:3. 823. 823. 823. 823. 823. 823. 11 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300. 7300.

730 00. 7300. 7300. 7300. 7300. 7300. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Sheet 13 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 10.1 meters TYPE OF RELEASE: Ground Release DELTA-T HEIGHTS: 10.1-45.7 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 84-88 met data, 33 ft wind,33-150 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAl AVERAGE IN SECTOR SECTOR S 823. 1.81E-04 9. 66E-05 7.06E-05 3 58E-05 1.35E-05 4.09E-06 8.0 S SSW 823. 1. 61E-04 8.23E-05 5.89E-05 2. 84E-05 1.00E-05 2.78E-06 285.0 SSW SW 823. 1. 68E-04 8.61E-05 6.17E-05 2. 99E-05 1.06E-05 2. 97E-06 6.8 SW WSW 823. 1. 75E-04 8. 86E-05 6.29E-05 3 00E-05 1.03E-05 2.81E-06 8.5 WSW W 823. 2. 23E-04 1. 13E-04 8.08E-05 3 88E-05 1.35E-05 3.73E-06 14.5 W WNW 823. 2. 12E-04 1. 07E-04 7.56E-05 3 .58E-05 1.23E-05 3 .30E-06 11.5 WNW NW 823. 1. 76E-04 9. 13E-05 6.57E-05 3 .22E-05 1.15E-05 3 .29E-06 7.3 NW NNW 823. 1. 67E-04 8.90E-05 6.50E-05 3 .29E-05 1.24E-05 3. 73E-06 6.4 NNW N 823. 1. 69E-04 9.09E-05 6.67E-05 3 41E-05 1.30E-05 3. 98E-06 6.4 N NNE 823. 1. 82E-04 9.13E-05 6.47E-05 3. 06E-05 1.04E-05 2. 80E-06 8.5 NNE NE 823. 2. 56E-04 1.27E-04 8.94E-05 4. 18E-05 1.40E-05 3 .68E-06 19.0 NE ENE 823. 3.53E-04 1.83E-04 1.32E-04 6.47E-05 2.33E-05 6. 68E-06 43.2 ENE E 823. 3.54E-04 1.85E-04 1.34E-04 6. 61E-05 2.40E-05 6.97E-06 43.7 E ESE 823. 3 . 01E-04 1. 59E-04 1.15E-04 5. 75E-05 2 .12E-05 6.27E-06 29.2 ESE SE 823. 2.57E-04 1.38E-04 1.02E-04 5. 19E-05 1.98E-05 6.09E-06 19.8 SE SSE 823. 1. 90E-04 1.03E-04 7.58E-05 3. 91E-05 1.51E-05 4.70E-06 9.8 SSE MAX X/Q 3. 54E-04 TOTAL HOURS AROUND SITE: 527.7 SRP 2.3.4 823. 5. 79E-04 2.79E-04 1. 93E-04 8. 76E-05 2.81E-05 6.97E-06 SITE LIMIT 2. 95E-04 1.59E-04 1.16E-04 5. 95E-05 2.27E-05 6.97E-06 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 14 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 10.1 meters TYPE OF RELEASE: Ground Release DELTA-T HEIGHTS: 10.1-45.7 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 84-88 met data, 33 ft wind,33-150 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAM AVERAGE IN SECTOR SECTOR S 7300. 1. 94E-05 8. 86E-06 5.99E-06 2.56E-06 7. 56E-07 1.70E-07 6.7 S SSW 7300. 1. 61E-05 7. 1OE-06 4.72E-06 1. 95E-06 5. 46E-07 1.15E-07 244.4 SSW SW 7300. 1. 70E-05 7. 52E-06 5.01E-06 2. 07E-06 5. 81E-07 1.23E-07 6.7 SW WSW 7300. 1. 91E-05 8. 25E-06 5.42E-06 2. 18E-06 5. 90E-07 1.19E-07 10.9 WSW W 7300. 2. 66E-05 1. 15E-05 7.54E-06 3. 03E-06 8.16E-07 1. 64E-07 18.0 W WNW 7300. 2 .44E-05 1.05E-05 6.87E-06 2. 75E-06 7.38E-07 1.48E-07 9.5 WNW NW 7300. 1.84E-05 8. 25E-06 5.52E-06 2. 31E-06 6. 63E-07 1.44E-07 6.3 NW NNW 7300. 1.67E-05 7.76E-06 5.28E-06 2. 29E-06 6. 92E-07 1. 60E-07 5.6 NNW N 7300. 1. 71E-05 8. 01E-06 5.47E-06 2. 39E-06 7.31E-07 1.71E-07 4.9 N NNE 7300. 2.01E-05 8. 68E-06 5.71E-06 2. 30E-06 6.23E-07 1.26E-07 6.6 NNE NE 7300. 3.15E-05 1.33E-05 8.60E-06 3. 37E-06 8. 76E-07 1. 69E-07 16.5 NE ENE 7300. 4.71E-05 2. 05E-05 1.36E-05 5. 50E-06 1.51E-06 3. 09E-07 41.5 ENE E 7300. 4. 82E-05 2. 1OE-05 1.39E-05 5. 66E-06 1.55E-06 3.20E-07 43.7 E ESE 7300. 4.O0E-05 1.76E-05 1.17E-05 4. 82E-06 1.35E-06 2. 83E-07 31.1 ESE SE 7300. 3.20E-05 1.45E-05 9.76E-06 4. 14E-06 1.21E-06 2. 67E-07 20.8 SE SSE 7300. 2.10E-05 9.70E-06 6.59E-06 2. 84E-06 8.51E-07 1. 95E-07 10.8 SSE MAX X/Q 4.82E-05 TOTAL HOURS AROUND SITE: 484.1 SRP 2.3.4 7300. 5. 20E-05 2.24E-05 1.47E-05 5. 91E-06 1.59E-06 3.20E-07 SITE LIMIT 3 .65E-05 1.67E-05 1.13E-05 4.82E-06 1.42E-06 3.20E-07 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 15 of 62

ATTACHMENT C Off-Gas Stack to Control Room Intake (209 and 280 m; Tower 2 Meteorology-, RG 1.23. Revision 1 Wind Speed Categories) 1 1111 Peach Bottom Stack Release 97.5 meters 10.1-96.3 meters Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 11 1 2584. 54.3131.4 97.5 0 0 0 2 6 5 0

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 2. 10. 10. 15. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

5. 6. 10. 23. 59. 25. 2. 0. 0. 1. 2. 0. 0. 0. 0. 1.

1. 3. 11. 18. 43. 40. 10. 4. 2. 2. 2. 0. 1. 3. 0. 0.

0. 6. 10. 11. 13. 17. 9. 0. 7. 4. 3. 3. 2. 3. 0. 5.

0. 1. 2.. 13. 8. 3. 9. 0. 4. 3. 0. 6. 13. 7. 3. 4.

2. 4. 9. 11. 2. 3. 7. 0. 6. 2. 2. 1. 14. 5. 2. 14.

1. 2. 0. 1. 0. 1. 0. 0. 0. 0. 0. 2. 10. 2. 0. 1.

1. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 1. 6. 5. 1. 1.

0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 1. 1. 9. 5. 0. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0.

1. 7. 5. 8. 21. 5. 1. 0. 0. 0. 0. 0. 1. 0. 1. 0.

12. 15. 9. 11. 34. 19. 6. 1. 1. 4. 3. 1. 3. 1. 2. 3.

1. 11. 11. 18. 6. 21. 11. 4. 4. 4. 4. 2. 3. 5. 1. 7.

2. 5. 4. 2. 5. 9. 13. 5. 17. 9. 6. 5. 13. 2. 1. 12.

3. 0. 3. 1. 3. 0. 9. 6. 14. 5. 6. 7. 10. 8. 3. 15.

8. 2. 1. 1. 0. 2. 5. 3. 22. 5. 3. 13. 21. 15. 6. 20.

1. 3. 0. 0. 0. 1. 1. 1. 6. 1. 1. 2. 11. 12. 5. 6.

0. 0. 1. 0. 0. 0. 0. 0. 1. 1. 0. 1. 7. 10. 0. 0.

0. 2. 2. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 3. 10. 14. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

4. 7. 11. 16. 31. 17. 2. 0. 1. 0. 0. 0. 0. 0. 0. 1.

18. 14. 15. 17. 17. 40. 6. 4. 11. 4. 7. 3. 2. 2. 3. 16.

26. 12. 8. 11. 10. 21. 26. 13. 20. 13. 9. 4. 16. 6. 8. 35.

21. 6. 3. 8. 5. 11. 31. 10. 40. 14. 15. 14. 23. 13. 9. 45.

8. 8. 0. 3. 2. 3. 15. 12. 37. 17. 11. 15. 11. 21. 18. 43.

14. 2. 4. 2. 2. 3. 7. 5. 48. 18. 16. 24. 48. 45. 26. 74.

4. 1. 0. 0. 1. 2. 0. 1. 10. 0. 3. 3. 29. 27. 22. 14.

1. 3. 0. 0. 0. 0. 0. 0. 1. 0. 2. 2. 16. 33. 12. 4.

18. 18. 28. 26. 28. 20. 14. 13. 12. 6. 9. 6. 8. 19. 8. 10.

41. 40. 80. 93. 87. 66. 31. 22. 29. 17. 23. 9. 18. 19. 28. 40.

67. 53. 78. 99. 130. 77. 54. 50. 39. 31. 28. 24. 30. 19. 40. 50.

209. 119. 120. 174. 227. 179. 192. 134. 171. 110. 98. 90. 89. 59. 118. 231.

216. 175. 125. 187. 215. 168. 282. 234. 320. 203. 128. 80. 109. 115. 186. 390.

237. 151. 118. 123. 134. 129. 212. 204. 330. 193. 142. 89. 134. 160.-235. 438.

233. 99. 80. 54. 103. 102. 129. 147. 274. 132. 80. 103. 142. 196. 332. 406.

278. 113. 52. 44. 87. 94. 107. 58. 345. 108. 91. 139. 311. 543. 821. 694.

69. 28. 13. 11. 24. 24. 15. 10. 96. 21. 15. 20. 211. 392. 489. 230.

25. 10. 10. 2. 18. 7. 8. 1. 40. 6. 5. 12. 124. 227. 256. 94.

Sheet 16 of 62

ATTACHMENT C

21. 15. 15. 20. 24. 17. 26. 16. 26. 16. 17. 19. 30. 17. 23. 11.

39. 29. 21. 41. 36. 43. 35. 43. 44. 40. 42. 35. 24. 19. 16. 23.

50. 43. 35. 51. 65. 48. 90. 69. 60. 65. 63. 36. 42. 23. 30. 36.

137. 92. 91. 138. 168. 113. 186. 176. 263. 196. 164. 111. 102. 82. 112. 115.

177. 131. 95. 87. 123. 134. 205. 234. 432. 273. 191. 116. 120. 116. 154. 200.

180. 79. 69. 40. 68. 116. 152. 195. 423. 257. 165. 149. 193. 161. 255. 213.

102. 30. 25. 9. 37. 61. 88. 142. 284. 182. 99. 157. 213. 232. 277. 276.

110. 26. 17. 6. 39. 46. 69. 103. 367. 150. 159. 177. 417. 441. 493. 336.

24. 10. 3. 4. 11. 20. 16. 11. 72. 19. 27. 38. 88. 124. 101. 48.

8. 1. 6. 1. 21. 3. 9. 1. 9. 2. 2. 2. 10. 12. 10. 14.

16. 7. 13. 10. 11. 12. 10. 12. 12. 12. 15. 15. 14. 13. 13. 7.

10. 12. 9. 16. 20. 11. 18. 20. 11. 20. 17. 18. 16. 15. 13. 15.

26. 13. 14. 10. 13. 18. 27. 34. 33. 29. 27. 36. 22. 18. 18. 20.

53. 19. 18. 17. 15. 28. 43. 44. 75. 89. 99. 64. 43. 39. 60. 59.

62. 19. 7. 10. 14. 18. 37. 32. 89. 72. 105. 77. 88. 49. 69. 53.

29. 9. 6. 0. 5. 11. 18. 46. 46. 46. 66. 85. 85. 74. 87. 57.

12. 4. 3. 0. 0. 2. 7. 15. 40. 19. 31. 57. 85. 55. 67. 47.

2. 0. 0. 0. 0. 1. 4. 6. 24. 20. 23. 80. 128. 104. 61. 19.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 1. 21. 23. 23. 0. 5.

1. 0. 0. 0. 4. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0.

7. 9. 6. 6. 8. 2. 1. 7. 8. 8. 1. 10. 8. 8. 7. 10.

4. 5. 5. 4. 5. 3. 3. 2. 9. 1. 5. 8. 5. 6. 6. 9.

4. 9. 5. 4. 5. 1. 11. 4. 8. 9. 6. 8. 7. 8. 11. 12.

35. 8. 15. 13. 7. 5. 12. 5. 22. 19. 22. 19. 25. 22. 44. 34.

17. 3. 5. 4. 3. 1. 8. 3. 6. 16. 36. 25. 28. 26. 53. 62.

7. 4. 1. 0. 0. 1. 4. 3. 8. 4. 16. 40. 27. 20. 41. 29.

0. 0. 0. 0. 0. 0. 2. 1. 1. 5. 10. 23. 37. 10. 17. 8.

1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 5. 14. 24. 32. 5. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 1. 2. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 0209.0209.0209.0209.0209.0209.0209.0209.0209.0209.0209.0209.0209.0209.0209.0209.

0280.0280.0280.0280.0280.0280.0280.0280.0280.0280.0280.0280.0280.0280.0280.0280.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.

0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.

Sheet 17 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Stack Release 3 97.5 meters 10.1-96.3 meters 5 Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 6 11 42771 1 7 0.500 2584.000 54.300 131.400 97.500 8 0.000 0.000 0.000 2.000 6.000 5.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000. 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 2.000 10.000 10.000 15.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 5.000 6.000 10.000 23.000 59.000 25.000 2.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 1.000 9 1.000 3.000 11.000 18.000 43.000 40.000 10.000 4.000 2.000 2.000 2.000 0.000 1.000 3.000 0.000 0.000 9 0.000 6.000 10.000 11.000 13.000 17.000 9.000 0.000 7.000 4.000 3.000 3 .000 2.000 3.000 0.000 5.000 9 0.000 1.000 2.000 13.000 8.000 3.000 9.000 0.000 4.000 3.000 0.000 6.000 13.000 7.000 3.000 4.000 9 2.000 4.000 9.000 11.000 2.000 3.000 7.000 0.000 6.000 2.000 2.000 1.000 14.000 5.000 2.000 14.000 9 1.000 2.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 2.000 0.000 1.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 6.000 5.000 1.000 1.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 1.000 1.000 9.000 5.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 7.000 5.000 8.000 21.000 5.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 9 12.000 15.000 9.000 11.000 34.000 19.000 6.000 1.000 1.000 4.000 3.000 1.000 3.000 1.000 2.000 3.000 9 1.000 11.000 11.000 18.000 6.000 21.000 11.000 4.000 4.000 4.000 4.000 2.000 3.000 5.000 1.000 7.000 9 2.000 5.000 4.000 2.000 5.000 9.000 13.000 5.000 17.000 9.000 6.000 5.000 13.000 2.000 1.000 12.000 9 3.000 0.000 3.000 1.000 3.000 0.000 9.000 6.000 14.000 5.000 6.000 7.000 10.000 8.000 3.000 15.000 9 8.000 2.000 1.000 1.000 0.000 2.000 5.000 3.000 22.000 5.000 3.000 13.000 21.000 15.000 6.000 20.000 9 1.000 3.000 0.000 0.000 0.000 1.000 1.000 1.000 6.000 1.000 1.000 2.000 11.000 12.000 5.000 6.000 9 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 7.000 10.000 0.000 0.000 9 0.000 2.000 2.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 3.000 10.000 14.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 4.000 7.000 11.000 16.000 31.000 17.000 2.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 9 18.000 14.000 15.000 17.000 17.000 40.000 6.000 4.000 11.000 4.000 7.000 3.000 2.000 2.000 3.000 16.000 9 26.000 12.000 8.000 11.000 10.000 21.000 26.000 13.000 20.000 13.000 9.000 4.000 16.000 6.000 8.000 35.000 9 21.000 6.000 3.000 8.000 5.000 11.000 31.000 10.000 40.000 14.000 15.000 14.000 23.000 13.000 9.000 45.000 9 8.000 8.000 0.000 3.000 2.000 3.000 15.000 12.000 37.000 17.000 11.000 15.000 11.000 21.000 18.000 43.000 9 14.000 2.000 4.000 2.000 2.000 3.000 7.000 5.000 48.000 18.000 16.000 24.000 48.000 45.000 26.000 74.000 9 4.000 1.000 0.000 0.000 1.000 2.000 0.000 1.000 10.000 0.000 3.000 3.000 29.000 27.000 22.000 14.000 9 1.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 2.000 16.000 33.000 12.000 4.000 9 18.000 18.000 28.000 26.000 28.000 20.000 14.000 13.000 12.000 6.000 9.000 6.000 8.000 19.000 8.000 10.000 9 41.000 40.000 80.000 93.000 87.000 66.000 31.000 22.000 29.000 17.000 23.000 9.000 18.000 19.000 28.000 40.000 9 67.000 53.000 78.000 99.000130.000 77.000 54.000 50.00.0 39.000 31.000 28.000 24.000 30.000 19.000 40.000 50.000 9 209.000119.000120.000174.000227.000179.000192.000134.000171.000110.000 98.000 90. 000 89.000 59.000118.000231.000 9 216.000175.000125.000187.000215.000168.000282.000234.000320.000203.000128.000 80.000109.000115.000186.000390.000 9 237.000151.000118.000123.000134.000129.000212.000204.000330.000193.000142.000 89.000134.000160.000235.000438.000 9 233.000 99.000 80.000 54.000103.000102.000129.000147.000274.000132.000 80.000103.000142.000196.000332.000406.000 9 278.000113.000 52.000 44.000 87.000 94.000107.000 58.000345.000108.000 91.000139.000311.000543.000821.000694.000 9 69.000 28.000 13.000 11.000 24.000 24.000 15.000 10.000 96.000 21.000 15.000 20.000211.000392.000489.000230.000 9 25.000 10.000 10.000 2.000 18.000 7.000 8.000 1.000 40.000 6.000 5.000 12.000124.000227.000256.000 94.000 Sheet 18 of 62

ATTACHMENT C 9 21.000 15.000 15.000 20.000 24.000 17.000 26.000 16.000 26.000 16.000 17.000 19.000 30.000 17.000 23.000 11.000 9 39.000 29.000 21.000 41.000 36.000 43.000 35.000 43.000 44.000 40.000 42.000 35.000 24.000 19.000 16.000 23.000 9 50.000 43.000 35.000 51.000 65.000 48.000 90.000 69.000 60.000 65.000 63.000 36.000 42.000 23.000 30.000 36.000 9 137.000 92.000 91.000138.000168.000113.000186.000176.000263.000196.000164.000111.000102.000 82.000112.000115.000 9 177.000131.000 95.000 87.000123.000134.000205.000234.000432.000273.000191.000116.000120.000116.000154.000200.000 9 180.000 79.000 69.000 40.000 68.000116.000152.000195.000423.000257.000165.000149.000193.000161.000255.000213.000 9 102.000 30.000 25.000 9.000 37.000 61.000 88.000142.000284.000182.000 99.000157.000213.000232.000277.000276.000 9 110.000 26.000 17.000 6.000 39.000 46.000 69.000103 .000367.000150.000159.000177.000417.000441.000493.000336.000 9 24.000 10.000 3.000 4.000 11.000 20.000 16.000 11.000 72.000 19.000 27.000 38.000 88.000124.000101.000 48.000 9 8.000 1.000 6.000 1.000 21.000 3.000 9.000 1.000 9.000 2.000 2.000 2.000 10.000 12.000 10.000 14.000 9 16.000 7.000 13.000 10.000 11.000 12.000 10.000 12.000 12.000 12.000 15.000 15.000 14.000 13.000 13.000 7.000 9 10.000 12.000 9.000 16.000 20.000 11.000 18.000 20.000 11.000 20.000 17.000 18.000 16.000 15.000 13.000 15.000 9 26.000 13.000 14.000 10.000 13.000 18.000 27.000 34.000 33.000 29.000 27.000 36.000 22.000 18.000 18.000 20.000 9 53.000 19.000 18.000 17.000 15.000 28.000 43.000 44.000 75.000 89.000 99.000 64.000 43.000 39.000 60.000 59.000 9 62.000 19.000 7.000 10.000 14.000 18.000 37.000 32.000 89.000 72.000105.000 77.000 88.000 49.000 69.000 53.000 9 29.000 9.000 6.000 0.000 5.000 11.000 18.000 46.000 46.000 46.000 66.000 85.000 85.000 74.000 87.000 57.000 9 12.000 4.000 3.000 0.000 0.000 2.000 7.000 15.000 40.000 19.000 31.000 57.000 85.000 55.000 67.000 47.000 9 2.000 0.000 0.000 0.000 0.000 1.000 4.000 6.000 24.000 20.000 23.000 80.000128.000104.000 61.000 19.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 1.000 21.0 000 23.000 23.000 0.000 5.000 9 1.000 0.000 0.000 0.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 1.0 000 1.000 0.000 0.000 0.000 9 7.000 9.000 6.000 6.000 8.000 2.000 1.000 7.000 8.000 8.000 1.000 10.C 000 8.000 8.000 7.000 10.000 9 4.000 5.000 5.000 4.000 5.000 3.000 3.000 2.000 9.000 1.000 5.000 8.0 000 5.000 6.000 6.000 9.000 9 4.000 9.000 5.000 4.000 5.000 1.000 11.000 4o000 8.000 9.000 6.000 8.0 000 7.000 8.000 11.000 12.000 9 35. 000 8.000 15.000 13.000 7.000 5.000 12.000 5.000 22.000 19.000 22.000 19.0 )00 25.000 22.000 44.000 34.000 9 17.000 3.000 5.000 4.000 3 .000 1.000 8.000 3.000 6.000 16.000 36.000 25.0 000 28.000 26.000 53.000 62.000 9 7.000 4.000 1.000 0.000 0.000 1.000 4.000 3.000 8.000 4.000 16.000 40.0 000 27.000 20.000 41.000 29.000 9 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 5.000 10.000 23.0 000 37.000 10.000 17.000 8.000 9 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 5.000 14.0 000 24.000 32.000 5.000 4.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.0 000 1.000 2.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0 000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 209. 209. 209. 209. 209. 209.

209. 209. 209. 209. 209. 209. 209. 209. 209. 209. 11 280. 280. 280. 280. 280. 280. 280. 280. 280. 280.

280. 280. 280. 280. 280. 280. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 13 500. 500.

500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500.

14 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Sheet 19 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 209. 1.67E-06 1. 68E-07 5. 33E-08 4.41E-09 1.23E-10 1. 55E-12 7.4 S SSW 209. 1. 71E-06 1. 98E-07 6. 77E-08 6. 55E-09 2.29E-10 3. 80E-12 154.3 SSW SW 209. 2.21E-06 2. 86E-07 1. 03E-07 1. 12E-08 4.64E-10 9. 45E-12 17.7 SW WSW 209. 2.54E-06 3.47E-07 1. 28E-07 1.48E-08 6.67E-10 1.50E-Il 24.9 WSW W 209. 3.31E-06 4. 83E-07 1. 84E-07 2.28E-08 1.14E-09 2. 91E-1I 43.7 W WNW 209. 2.49E-06 3.44E-07 1. 28E-07 1.50E-08 6.89E-10 1. 59E-11 22.4 WNW NW 209. 1. 70E-06 2. 05E-07 7. 11E-08 7.16E-09 2.66E-10 4. 72E-12 6.6 NW NNW 209. 1. 37E-06 1.23E-07 3. 69E-08 2.71E-09 6.38E-11 6. 49E-13 3.6 NNW N 209. 1. 55E-06 1. 66E-07 5. 44E-08 4.83E-09 1.49E-10 2. 12E-12 3.9 N NNE 209. 1. 30E-06 1.36E-07 4. 39E-08 3.80E-09 1.13E-10 1. 53E-12 2.5 NNE NE 209. 1 .28E-06 1.31E-07 4. 20E-08 3.54E-09 1.02E-10 1 .32E-12 3.2 NE ENE 209. 1 .20E-06 1.23E-07 3. 94E-08 3.32E-09 9.56E-11 1. 25E-12 2.0 ENE E 209. 1. 42E-06 1.70E-07 5. 86E-08 5. 86E-09 2.14E-10 3. 75E-12 3.4 E ESE 209. 1. 19E-06 1.35E-07 4. 54E-08 4.29E-09 1.45E-10 2 30E-12 4.7 ESE SE 209. 1. 28E-06 1.12E-07 3 .31E-08 2.35E-09 5.28E-11 5. 08E-13 3.0 SE SSE 209. 1. 64E-06 1.79E-07 5. 92E-08 5.37E-09 1.71E-10 2. 51E-12 4.4 SSE MAX X/Q 3 31E-06 TOTAL HOURS AROUND SITE: 307.8 SRP 2.3.4 209. 2.12E-06 3.33E-07 1.32E-07 1.77E-08 9. 91E-10 2.91E-II SITE LIMIT 2.12E-06 3 .33E-07 1.32E-07 1.77E-08 9. 91E-10 2.91E-I1 0.5 PERCENT X/Q TO AN INDIVIDUAL IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 209. 1.69E-04 SSW 209. 1.69E-04 SW 209. 1.69E-04 WSW 209. 1.69E-04 W 209. 1.69E-04 WNW 209. 1.69E-04 NW 209. 1.69E-04 NNW 209. 1. 69E-04 N 209. 1. 69E-04 NNE 209. 1. 69E-04 NE 209. 1. 69E-04 ENE 209. 1. 69E-04 E 209. 1. 69E-04 ESE 209. 1. 69E-04 Sheet 20 of 62

ATTACHMN/ENT C SE 209. 1.69E-04 SSE 209. 1.69E-04

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 21 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 280. 1. 67E-06 3 .64E-07 1.70E-07 3.25E-08 3. 03E-09 1.66E-10 7.4 S SSW 280. 1.71E-06 4. 30E-07 2.16E-07 4.83E-08 5. 63E-09 4. 06E-10 154.3 SSW SW 280. 2.21E-06 6. 19E-07 3.28E-07 8. 25E-08 1. 14E-08 1.01E-09 17.7 SW WSW 280. 2. 54E-06 7. 52E-07 4.09E-07 1. 09E-07 1. 63E-08 1. 60E-09 24.9 WSW W 280. 3.31E-06 1. 04E-06 5.87E-07 1. 68E-07 2. 79E-08 3. 1OE-09 43.7 W WNW 280. 2.49E-06 7. 45E-07 4.08E-07 1.10E-07 1. 69E-08 1.70E-09 22.4 WNW NW 280. 1.70E-06 4. 43E-07 2.26E-07 5. 27E-08 6. 51E-09 5. 04E-10 6.6 NW NNW 280. 1.37E-06 2. 66E-07 1.18E-07 2 . OOE-08 1.57E-09 6. 96E-11 3.6 NNW N 280. 1.55E-06 3. 60E-07 1.73E-07 3. 56E-08 3.66E-09 2.27E-10 3.9 N NNE 280. 1.30E-06 2. 94E-07 1.40E-07 2. 80E-08 2.77E-09 1. 64E-10 2.5 NNE NE 280. 1. 28E-06 2.84E-07 1.34E-07 2.61E-08 2.49E-09 1.41E-10 3.2 NE ENE 280. 1. 20E-06 2. 66E-07 1.25E-07 2.45E-08 2.35E-09 1.33E-10 2.0 ENE E 280. 1.42E-06 3.67E-07 1.87E-07 4.31E-08 5. 26E-09 4. OOE-10 3.4 E ESE 280. 1.19E-06 2. 92E-07 1.45E-07 3.16E-08 3. 55E-09 2.45E-10 4.7 ESE SE 280. 1. 28E-06 2.42E-07 1.05E-07 1. 73E-08 1.30E-09 5.45E-11 3.0 SE SSE 280. 1. 64E-06 3.88E-07 1.89E-07 3.95E-08 4.19E-09 2. 69E-10 4.4 SSE MAX X/Q 3.31E-06 TOTAL HOURS AROUND SITE: 307.8 SRP 2.3.4 280. 2.12E-06 7.22E-07 4.21E-07 1.30E-07 2.43E-08 3. 1OE-09 SITE LIMIT 2. 12E-06 7.22E-07 4.21E-07 1.30E-07 2 .43E-08 3. 1OE-09 0.5 PERCENT X/Q TO AN INDIVIDUAL IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 280. 1.30E-04 SSW 280. 1.30E-04 SW 280. 1.30E-04 WSW 280. 1.30E-04 W 280. 1.30E-04 WNW 280. 1.30E-04 NW 280. 1.30E-04 NNW 280. 1.30E-04 N 280. 1.30E-04 NNE 280. 1.30E-04 NE 280. 1.30E-04 ENE 280. 1.30E-04 E 280. 1.30E-04 ESE 280. 1.30E-04 Sheet 22 of 62

ATTACHMENT C SE 280. 1.30E-04 SSE 280. 1.30E-04

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Off-Gas Stack to Control Room Intake (300 and 500 m; Tower 2 Meteorology; RG 1.23, Revision 1 Wind Speed Categories) 1 1111 Peach Bottom Stack Release 97.5 meters 10.1-96.3 meters Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 11 1 2584. 54.3131.4 97.5 0 0 0 2 6 5 0

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 2. 10. 10. 15. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

5. 6. 10. 23. 59. 25. 2. 0. 0. 1. 2. 0. 0. 0. 0. 1.

1. 3. 11. 18. 43. 40. 10. 4. 2. 2. 2. 0. 1. 3. 0. 0.

0. 6. 10. 11. 13. 17. 9. 0. 7. 4. 3. 3. 2. 3. 0. 5.

0. 1. 2. 13. 8. 3. 9. 0. 4. 3. 0. 6. 13. 7. 3. 4.

2. 4. 9. 11. 2. 3. 7. 0. 6. 2. 2. 1. 14. 5. 2. 14.

1. 2. 0. 1. 0. 1. 0. 0. 0. 0. 0. 2. 10. 2. 0. 1.

1. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 1. 6. 5. 1. 1.

0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 1. 1. 9. 5. 0. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0.

1. 7. 5. 8. 21. 5. 1. 0. 0. 0. 0. 0. 1. 0. 1. 0.

12. 15. 9. 11. 34. 19. 6. 1. 1. 4. 3. 1. 3. 1. 2. 3.

1. 11. 11. 18. 6. 21. 11. 4. 4. 4. 4. 2. 3. 5. 1. 7.

2. 5. 4. 2. 5. 9. 13. 5. 17. 9. 6. 5. 13. 2. 1. 12.

3. 0. 3. 1. 3. 0. 9. 6. 14. 5. 6. 7. 10. 8. 3. 15.

8. 2. 1. 1. 0. 2. 5. 3. 22. 5. 3. 13. 21. 15. 6. 20.

1. 3. 0. 0. 0. 1. 1. 1. 6. 1. 1. 2. 11. 12. 5. 6.

0. 0. 1. 0. 0. 0. 0. 0. 1. 1. 0. 1. 7. 10. 0. 0.

0. 2. 2. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 3. 10. 14. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

4. 7. 11. 16. 31. 17. 2. 0. 1. 0. 0. 0. 0. 0. 0. 1.

18. 14. 15. 17. 17. 40. 6. 4. 11. 4. 7. 3. 2. 2. 3. 16.

26. 12. 8. 11. 10. 21. 26. 13. 20. 13. 9. 4. 16. 6. 8. 35.

21. 6. 3. 8. 5. 11. 31. 10. 40. 14. 15. 14. 23. 13. 9. 45.

8. 8. 0. 3. 2. 3. 15. 12. 37. 17. 11. 15. 11. 21. 18. 43.

14. 2. 4. 2. 2. 3. 7. 5. 48. 18. 16. 24. 48. 45. 26. 74.

4. 1. 0. 0. 1. 2. 0. 1. 10. 0. 3. 3. 29. 27. 22. 14.

1. 3. 0. 0. 0. 0. 0. 0. 1. 0. 2. 2. 16. 33. 12. 4.

18. 18. 28. 26. 28. 20. 14. 13. 12. 6. 9. 6. 8. 19. 8. 10.

Sheet 23 of 62

ATTACHMENT C

41. 40. 80. 93. 87. 66. 31. 22. 29. 17. 23. 9. 18. 19. 28. 40.

67. 53. 78. 99. 130. 77. 54. 50. 39. 31. 28. 24. 30. 19. 40. 50.

209. 119. 120. 174. 227. 179. 192. 134. 171. 110. 98. 90. 89. 59. 118. 231.

216. 175. 125. 187. 215. 168. 282. 234. 320. 203. 128. 80. 109. 115. 186. 390.

237. 151. 118. 123. 134. 129. 212. 204. 330. 193. 142. 89. 134. 160. 235. 438.

233. 99. 80. 54. 103. 102. 129. 147. 274. 132. 80. 103. 142. 196. 332. 406.

278. 113. 52. 44. 87. 94. 107. 58. 345. 108. 91. 139. 311. 543. 821. 694.

69. 28. 13. 11. 24. 24. 15. 10. 96. 21. 15. 20. 211. 392. 489. 230.

25. 10. 10. 2. 18. 7. 8. 1. 40. 6. 5. 12. 124. 227. 256. 94.

21. 15. 15. 20. 24. 17. 26. 16. 26. 16. 17. 19. 30. 17. 23. 11.

39. 29. 21. 41. 36. 43. 35. 43. 44. 40. 42. 35. 24. 19. 16. 23.

50. 43. 35. 51. 65. 48. 90. 69. 60. 65. 63. 36. 42. 23. 30. 36.

137. 92. 91. 138. 168. 113. 186. 176. 263. 196. 164. 111. 102. 82. 112. 115.

177. 131. 95. 87. 123. 134. 205. 234. 432. 273. 191. 116. 120. 116. 154. 200.

180. 79. 69. 40. 68. 116. 152. 195. 423. 257. 165. 149. 193. 161. 255. 213.

102. 30. 25. 9. 37. 61. 88. 142. 284. 182. 99. 157. 213. 232. 277. 276.

110. 26. 17. 6. 39. 46. 69. 103. 367. 150. 159. 177. 417. 441. 493. 336.

24. 10. 3. 4. 11. 20. 16. 11. 72. 19. 27. 38. 88. 124. 101. 48.

8. 1. 6. 1. 21. 3. 9. 1. 9. 2. 2. 2. 10. 12. 10. 14.

16. 7. 13. 10. 11. 12. 10. 12. 12. 12. 15. 15. 14. 13. 13. 7.

10. 12. 9. 16. 20. 11. 18. 20. 11. 20. 17. 18. 16. 15. 13. 15.

26. 13. 14. 10. 13. 18. 27. 34. 33. 29. 27. 36. 22. 18. 18. 20.

53. 19. 18. 17. 15. 28. 43. 44. 75. 89. 99. 64. 43. 39. 60. 59.

62. 19. 7. 10. 14. 18. 37. 32. 89. 72. 105. 77. 88. 49. 69. 53.

29. 9. 6. 0. 5. 11. 18. 46. 46. 46. 66. 85. 85. 74. 87. 57.

12. 4. 3. 0. 0. 2. 7. 15. 40. 19. 31. 57. 85. 55. 67. 47.

2. 0. 0. 0. 0. 1. 4. 6. 24. 20. 23. 80. 128. 104. 61. 19.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 1. 21. 23. 23. 0. 5.

1. 0. 0. 0. 4. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0.

7. 9. 6. 6. 8. 2. 1. 7. 8. 8. 1. 10. 8. 8. 7. 10.

4. 5. 5. 4. 5. 3. 3. 2. 9. 1. 5. 8. 5. 6. 6. 9.

4. 9. 5. 4. 5. 1. 11. 4. 8. 9. 6. 8. 7. 8. 11. 12.

35. 8. 15. 13. 7. 5. 12. 5. 22. 19. 22. 19. 25. 22. 44. 34.

17. 3. 5. 4. 3. 1. 8. 3. 6. 16. 36. 25. 28. 26. 53. 62.

7. 4. 1. 0. 0. 1. 4. 3. 8. 4. 16. 40. 27. 20. 41. 29.

0. 0. 0. 0. 0. 0. 2. 1. 1. 5. 10. 23. 37. 10. 17. 8.

1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 5. 14. 24. 32. 5. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 1. 2. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.

0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.

0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.

Sheet 24 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Stack Release 3 97.5 meters 10.1-96.3 meters 4

5 Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 6 11 42771 1 7 0.500 2584.000 54.300 131.400 97.500 8 0.000 0.000 0.000 2.000 6.000 5.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 2.000 10.000 10.000 15.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 5.000 6.000 10.000 23.000 59.000 25.000 2.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 1.000 9 1.000 3.000 11.000 18.000 43.000 40.000 10.000 4.000 2.000 2.000 2.000 0.000 1.000 3.000 0.000 0.000 9 0.000 6.000 10.000 11.000 13.000 17.000 9.000 0.000 7.000 4.000 3.000 3.000 2.000 3.000 0.000 5.000 9 0.000 1.000 2.000 13.000 8.000 3.000 9.000 0.000 4.000 3.000 0.000 6.000 13.000 7.000 3.000 4.000 9 2.000 4.000 9.000 11.000 2.000 3.000 7.000 0.000 6.000 2.000 2.000 1.000 14.000 5.000 2.000 14.000 9 1.000 2.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 2.000 0.000 1.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 6.000 5.000 1.000 1.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 1.000 1.000 9.000 5.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 7.000 5.000 8.000 21.000 5.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 9 12.000 15.000 9.000 11.000 34.000 19.000 6.000 1.000 1.000 4.000 3.000 1.000 3.000 1.000 2.000 3.000 9 1.000 11.000 11.000 18.000 6.000 21.000 11.000 4.000 4.000 4.000 4.000 2.000 3.000 5.000 1.000 7.000 9 2.000 5.000 4.000 2.000 5.000 9.000 13.000 5.000 17.000 9.000 6.000 5.000 13.000 2.000 1.000 12.000 9 3.000 0.000 3.000 1.000 3.000 0.000 9.000 6.000 14.000 5.000 6.000 7.000 10.000 8.000 3.000 15.000 9 8.000 2.000 1.000 1.000 0.000 2.000 5.000 3.000 22.000 5.000 3.000 13.000 21.000 15.000 6.000 20.000 9 1.000 3.000 0.000 0.000 0.000 1.000 1.000 1.000 6.000 1.000 1.000 2.000 11.000 12.000 5.000 6.000 9 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 7.000 10.000 0.000 0.000 9 0.000 2.000 2.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 3 .000 10.000 14.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 4.000 7.000 11.000 16.000 31.000 17.000 2.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 9 18.000 14.000 15.000 17.000 17.000 40.000 6.000 4.000 11.000 4.000 7.000 3.000 2.000 2.000 3.000 16.000 9 26.000 12.000 8.000 11.000 10.000 21.000 26.000 13.000 20.000 13 .000 9.000 4.000 16.000 6.000 8.000 35.000 9 21.000 6.000 3.000 8.000 5.000 11.000 31.000 10.000 40.000 14.000 15.000 14.000 23.000 13.000 9.000 45.000 9 8.000 8.000 0.000 3.000 2.000 3.000 15.000 12.000 37.000 17.000 11.000 15.000 11.000 21.000 18.000 43.000 9 14.000 2.000 4.000 2.000 2.000 3.000 7.000 5.000 48.000 18.000 16.000 24.000 48.000 45.000 26.000 74.000 9 4.000 1.000 0.000 0.000 1.000 2.000 0.000 1.000 10.000 0.000 3.000 3.000 29.000 27.000 22.000 14.000 9 1.000 3 .000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 2.000 16.000 33.000 12.000 4.000 9 18.000 18.000 28.000 26.000 28.000 20.000 14.000 13.000 12.000 6.000 9.000 6.000 8.000 19.000 8.000 10.000 9 41.000 40.000 80.000 93.000 87.000 66.000 31.000 22.000 29.000 17.000 23.000 9.000 18.000 19.000 28.000 40.000 9 67.000 53.000 78.000 99.000130.000 77.000 54.000 50.000 39.000 31.000 28.000 24.000 30.000 19.000 40.000 50.000 9 209.000119.000120.000174.000227.000179.000192.000134.000171.000110.000 98.000 90.000 89.000 59.000118.000231.000 9 216.000175.000125.000187.000215.000168.000282.000234.000320.000203.000128.000 80.000109.000115.000186.000390.000 9 237.000151.000118.000123.000134.000129.000212.000204.000330.000193.000142.000 89.000134.000160.000235.000438.000 9 233.000 99.000 80.000 54.000103.000102.000129 .000147.000274.000132.000 80.000103.000142.000196.000332.000406.000 9 278.000113.000 52.000 44.000 87.000 94.000107.000 58.000345.000108.000 91.000139.000311.000543.000821.000694.000 9 69.000 28.000 13.000 11.000 24.000 24.000 15.000 10.000 96.000 21.000 15.000 20.000211.000392.000489.000230.000 9 25.000 10.000 10.000 2.000 18.000 7.000 8.000 1.000 40.000 6.000 5.000 12.000124.000227.000256.000 94.000 Sheet 25 of 62

ATTACHMENT C 9 21.000 15.000 15.000 20.000 24.000 17.000 26.000 16.000 26.000 16.000 17.000 19.000 30.000 17.000 23.000 11.000 9 39.000 29.000 21.000 41.000 36.000 43.000 35.000 43.000 44.000 40.000 42.000 35.000 24.000 19.000 16.000 23.000 9 50.000 43.000 35.000 51.000 65.000 48.000 90.000 69.000 60.000 65.000 63.000 36.000 42.000 23.000 30.000 36.000 9 137.000 92.000 91.000138.000168.000113.000186.000176.000263.000196.000164.000111.000102.000 82.000112.000115.000 9 177.000131.000 95.000 87.000123.000134.000205.000234.000432.000273.000191.000116.000120.000116.000154.000200.000 9 180.000 79.000 69.000 40.000 68.000116.000152.000195.000423.000257.000165.000149.000193. 000161.000255.000213.000 9 102.000 30.000 25.000 9.000 37.000 61.000 88.000142.000284.000182.000 99.000157.000213.000232.000277.000276.000 9 110.000 26.000 17.000 6.000 39.000 46.000 69.000103.000367.000150.000159.000177.000417.000441.000493.000336.000 9 24.000 10.000 3.000 4.000 11.000 20.000 16.000 11.000 72.000 19.000 27.000 38.000 88.000124.000101.000 48.000 9 8.000 1.000 6.000 1.000 21.000 3.000 9.000 1.000 9.000 2.000 2.000 2.000 10.000 12.000 10.000 14.000 9 16.000 7.000 13.000 10.000 11.000 12.000 10.000 12.000 12.000 12.000 15.000 15.000 14.000 13.000 13.000 7.000 9 10.000 12.000 9.000 16.000 20.000 11.000 18.000 20.000 11.000 20.000 17.000 18.000 16.000 15.000 13.000 15.000 9 26.000 13.000 14.000 10.000 13.000 18.000 27.000 34.000 33.000 29.000 27.000 36.000 22.000 18.000 18.000 20.000 9 53.000 19.000 18.000 17.000 15.000 28.000 43.000 44.000 75.000 89.000 99.000 64.000 43.000 39.000 60.000 59.000 9 62.000 19.000 7.000 10.000 14.000 18.000 37.000 32.000 89.000 72.000105.000 77.000 88.000 49.000 69.000 53.000 9 29.000 9.000 6.000 0.000 5.000 11.000 18.000 46.000 46.000 46.000 66.000 85.000 85.000 74.000 87.000 57.000 9 12.000 4.000 3.000 0.000 0.000 2.000 7.000 15.000 40.000 19.000 31.000 57.000 85.000 55.000 67.000 47.000 9 2.000 0.000 0.000 0.000 0.000 1.000 4.000 6.000 24.000 20.000 23.000 80.000128.000104.000 61.000 19.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 1.000 21.000 23.000 23.000 0.000 5.000 9 1.000 0.000 0.000 0.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 0.000 0.000 9 7.000 9.000 6.000 6.000 8.000 2.000 1.000 7.000 8.000 8.000 1.000 10.000 8.000 8.000 7.000 10.000 9 4.000 5.000 5.000 4.000 5.000 3.000 3.000 2.000 9.000 1.000 5.000 8.000 5.000 6.000 6.000 9.000 9 4.000 9.000 5.000 4.000 5.000 1.000 11.000 4.000 8.000 9.000 6.000 8.000 7.000 8.000 11.000 12.000 9 35.000 8.000 15.000 13.000 7.000 5.000 12.000 5.000 22.000 19.000 22.000 19.000 25.000 22.000 44.000 34.000 9 17.000 3.000 5.000 4.000 3.000 -1.000 8.000 3.000 6.000 16.000 36.000 25.000 28.000 26.000 53.000 62.000 9 7.000 4.000 1.000 0.000 0.000 1.000 4.000 3.000 8.000 4.000 16.000 40.000 27.000 20.000 41.000 29.000 9 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 5.000 10.000 23.000 37.000 10.000 17.000 8.000 9 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 5.000 14.000 24.000 32.000 5.000 4.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 2.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 300. 300. 300. 300. 300. 300.

300. 300. 300. 300. 300. 300. 300. 300. 300. 300. 11 500. 500. 500. 500. 500. 500. 500. 500. 500. 500.

500. 500. 500. 500. 500. 500. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 13 500. 500.

500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500.

14 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Sheet 26 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 300. 1.67E-06 4. 03E-07 1.98E-07 4. 22E-08 4. 60E-09 3.06E-10 7.4 S SSW 300. 1.71E-06 4.75E-07 2.51E-07 6. 26E-08 8.55E-09 7.48E-10 154.3 SSW SW 300. 2.21E-06 6. 84E-07 3.81E-07 1. 07E-07 1. 72E-08 1.85E-09 17.7 SW WSW 300. 2.54E-06 8. 31E-07 4.75E-07 1 .41E-07 2.48E-08 2.94E-09 24.9 WSW W 300. 3 .31E-06 1. 15E-06 6.82E-07 2. 18E-07 4.23E-08 5.69E-09 43.7 W WNW 300. 2.49E-06 8.24E-07 4.74E-07 1. 43E-07 2.56E-08 3.11E-09 22.4 WNW NW 300. 1.70E-06 4. 90E-07 2.63E-07 6. 84E-08 9. 88E-09 9.26E-10 6.6 NW NNW 300. 1.37E-06 2. 95E-07 1.37E-07 2. 59E-08 2.38E-09 1.28E-10 3.6 NNW N 300. 1. 55E-06 3. 98E-07 2.02E-07 4. 62E-08 5. 56E-09 4.17E-10 3.9 N NNE 300. 1.30E-06 3 .25E-07 1.63E-07 3 .63E-08 4. 21E-09 3.01E-10 2.5 NNE NE 300. 1.28E-06 3. 14E-07 1.55E-07 3.38E-08 3.78E-09 2.59E-10 3.2 NE ENE 300. 1.20E-06 2.94E-07 1.46E-07 3.18E-08 3.56E-09 2.45E-10 2.0 ENE E 300. 1.42E-06 4. 06E-07 2.17E-07 5.59E-08 7. 97E-09 7.36E-10 3.4 E ESE 300. 1.19E-06 3.23E-07 1.68E-07 4. 1OE-08 5.39E-09 4.51E-10 4.7 ESE SE 300. 1.28E-06 2.68E-07 1.23E-07 2. 25E-08 1. 97E-09 1.01E-10 3.0 SE SSE 300. 1. 64E-06 4.29E-07 2.20E-07 5.13E-08 6.36E-09 4.95E-10 4.4 SSE MAX X/Q 3.31E-06 TOTAL HOURS AROUND SITE 307.8

-SRP 2.3.4 300. 2. 12E-06 7. 98E-07 4.89E-07 1.69E-07 3. 68E-08 5. 69E-09 SITE LIMIT 2. 12E-06 7. 98E-07 4.89E-07 1.69E-07 3. 68E-08 5. 69E-09 0.5 PERCENT X/Q TO AN INDIVIDUAL IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 300. 1.22E-04 SSW 300. 1.22E-04 SW 300. 1.22E-04 WSW 300. 1.22E-04 W 300. 1.22E-04 WNW 300. 1.22E-04 NW 300. 1.22E-04 NNW 300. 1.22E-04 N 300. 1.22E-04 NNE 300. 1.22E-04 NE 300. 1.22E-04 ENE 300. 1.22E-04 E 300. 1.22E-04 ESE 300. 1.22E-04 Sheet 27 of 62

ATTACILMENT C SE 300. 1.22E-04 SSE 300. 1.22E-04

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 28 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 500. 1. 67E-06 5. 31E-07 2.99E-07 8. 62E-08 1.45E-08 1. 63E-09 7.4 S SSW 500. 1. 71E-06 6.22E-07 3.76E-07 1. 26E-07 2. 61E-08 3. 81E-09 154.3 SSW SW 500 2.21E-06 8. 63E-07 5.40E-07 1. 95E-07 4. 52E-08 7.56E-09 17.7 SW WSW 500. 2. 54E-06 1. 05E-06 6.74E-07 2. 58E-07 6. 50E-08 1.20E-08 24.9 WSW W 500. 3 .31E-06 1.45E-06 9.61E-07 3. 93E-07 1.09E-07 2. 26E-08 43.7 W WNW 500 2 .49E-06 1. 04E-06 6.69E-07 2. 58E-07 6. 61E-08 1.24E-08 22.4 WNW NW 500. 1.70E-06 6.28E-07 3.83E-07 1. 30E-07 2. 78E-08 4.19E-09 6.6 NW NNW 500. 1.37E-06 3. 94E-07 2.12E-07 5. 50E-08 7.95E-09 7. 45E-10 3.6 NNW N 500. 1.55E-06 5.27E-07 3.08E-07 9. 55E-08 1.78E-08 2. 28E-09 3.9 N NNE 500 1. 30E-06 4.25E-07 2.43E-07 7. 24E-08 1.27E-08 1.52E-09 2.5 NNE NE 500. 1.28E-06 4.09E-07 2.31E-07 6. 70E-08 1.13E-08 1.29E-09 3.2 NE ENE 500. 1.20E-06 3. 85E-07 2.18E-07 6. 37E-08 1. 09E-08 1.25E-09 2.0 ENE E 500. 1.42E-06 5. 24E-07 3.18E-07 1.08E-07 2. 29E-08 3 .44E-09 3.4 E ESE 500. 1.19E-06 4. 18E-07 2.48E-07 7. 98E-08 1.57E-08 2.14E-09 4.7 ESE SE 500. 1.28E-06 3. 62E-07 1.93E-07 4. 90E-08 6. 87E-09 6.20E-10 3.0 SE SSE 500. 1. 64E-06 5. 64E-07 3.31E-07 1. 04E-07 1. 98E-08 2.60E-09 4.4 SSE MAX X/Q 3 .31E-06 TOTAL HOURS AROUND SITE: 307.8 SRP 2.3.4 500. 2.12E-06 1.OOE-06 6.88E-07 3. 05E-07 9.46E-08 2.26E-08 SITE LIMIT 2.12E-06 1.OOE-06 6.88E-07 3. 05E-07 9.46E-08 2 .26E-08 0.5 PERCENT X/Q TO AN INDIVIDUAL IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 500. 7.68E-05 SSW 500. 7.68E-05 SW 500. 7.68E-05 WSW 500. 7.68E-05 W 500. 7.68E-05 WNW 500. 7.68E-05 NW 500. 7.68E-05 NNW 500. 7.68E-05 N 500. 7.68E-05 NNE 500. 7.68E-05 NE 500. 7.68E-05 ENE 500. 7.68E-05 E 500. 7.68E-05 ESE 500. 7.68E-05 Sheet 29 of 62

ATTACHMENT C SE 500. 7.68E-05 SSE 500. 7.68E-05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE .0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Off-Gas Stack to Control Room Intake (750 and 1000 m; Tower 2 Meteorology; RG 1.23, Revision 1 Wind Speed Catmiories)

Peach Bottom Stack Release 97.5 meters 10.1-96.3 meters Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 11 1 2584. 54.3131.4 97.5 0 0 0 2 6 5 0

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 2. 10. 10. 15. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

5. 6. 10. 23. 59. 25. 2. 0. 0. 1. 2. 0. 0. 0. 0. 1.

1. 3. 11. 18. 43. 40. 10. 4. 2. 2. 2. 0. 1. 3. 0. 0.

0. 6. 10. 11. 13. 17. 9. 0. 7. 4. 3. 3. 2. 3. 0. 5.

0. 1. 2. 13. 8. 3. 9. 0. 4. 3. 0. 6. 13. 7. 3. 4.

2. 4. 9. 11. 2. 3. 7. 0. 6. 2. 2. 1. 14. 5. 2. 14.

1. 2. 0. 1. 0. 1. 0. 0. 0. 0. 0. 2. 10. 2. 0. 1.

1. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 1. 6. 5. 1. 1.

0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 1. 1. 9. 5. 0. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0.

1. 7. 5. 8. 21. 5. 1. 0. 0. 0. 0. 0. 1. 0. 1. 0.

12. 15. 9. 11. 34. 19. 6. 1. 1. 4. 3. 1. 3. 1. 2. 3.

1. 11. 11. 18. 6. 21. 11. 4. 4. 4. 4. 2. 3. 5. 1. 7.

2. 5. 4. 2. 5. 9. 13. 5. 17. 9. 6. 5. 13. 2. 1. 12.

3. 0. 3. 1. 3. 0. 9. 6. 14. 5. 6. 7. 10. 8. 3. 15.

8. 2. 1. 1. 0. 2. 5. 3. 22. 5. 3. 13. 21. 15. 6. 20.

1. 3. 0. 0. 0. 1. 1. 1. 6. 1. 1. 2. 11. 12. 5. 6.

0. 0. 1. 0. 0. 0. 0. 0. 1. 1. 0. 1. 7. 10. 0. 0.

0. 2. 2. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 3. 10. 14. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

4. 7. 11. 16. 31. 17. 2. 0. 1. 0. 0. 0. 0. 0. 0. 1.

18. 14. 15. 17. 17. 40. 6. 4. 11. 4. 7. 3. 2. 2. 3. 16.

26. 12. 8. 11. 10. 21. 26. 13. 20. 13. 9. 4. 16. 6. 8. 35.

21. 6. 3. 8. 5. 11. 31. 10. 40. 14. 15. 14. 23. 13. 9. 45.

8. 8. 0. 3. 2. 3. 15. 12. 37. 17. 11. 15. 11. 21. 18. 43.

14. 2. 4. 2. 2. 3. 7. 5. 48. 18. 16. 24. 48. 45. 26. 74.

4. 1. 0. 0. 1. 2. 0. 1. 10. 0. 3. 3. 29. 27. 22. 14.

1. 3. 0. 0. 0. 0. 0. 0. 1. 0. 2. 2. 16. 33. 12. 4.

Sheet 30 of 62

ATTACHMENT C

18. 18. 28. 26. 28. 20. 14. 13. 12. 6. 9. 6. 8. 19. 8. 10.

41. 40. 80. 93. 87. 66. 31. 22. 29. 17. 23. 9. 18. 19. 28. 40.

67. 53. 78. 99. 130. 77. 54. 50. 39. 31. 28. 24. 30. 19. 40. 50.

209. 119. 120. 174. 227. 179. 192. 134. 171. 110. 98. 90. 89. 59. 118. 231.

216. 175. 125. 187. 215. 168. 282. 234. 320. 203. 128. 80. 109. 115. 186. 390.

237. 151. 118. 123. 134. 129. 212. 204. 330. 193. 142. 89. 134. 160. 235. 438.

233. 99. 80. 54. 103. 102. 129. 147. 274. 132. 80. 103. 142. 196. 332. 406.

278. 113. 52. 44. 87. 94. 107. 58. 345. 108. 91. 139. 311. 543. 821. 694.

69. 28. 13. 11. 24. 24. 15. 10. 96. 21. 15. 20. 211. 392. 489. 230.

25. 10. 10. 2. 18. 7. 8. 1. 40. 6. 5. 12. 124. 227. 256. 94.

21. 15. 15. 20. 24. 17. 26. 16. 26. 16. 17. 19. 30. 17. 23. 11.

39. 29. 21. 41. 36. 43. 35. 43. 44. 40. 42. 35. 24. 19. 16. 23.

50. 43. 35. 51. 65. 48. 90. 69. 60. 65. 63. 36. 42. 23. 30. 36.

137. 92. 91. 138. 168. 113. 186. 176. 263. 196. 164. 111. 102. 82. 112. 115.

177. 131. 95. 87. 123. 134. 205. 234. 432. 273. 191. 116. 120. 116. 154. 200.

180. 79. 69. 40. 68. 116. 152. 195. 423. 257. 165. 149. 193. 161. 255. 213.

102. 30. 25. 9. 37. 61. 88. 142. 284. 182. 99. 157. 213. 232. 277. 276.

110. 26. 17. 6. 39. 46. 69. 103. 367. 150. 159. 177. 417. 441. 493. 336.

24. 10. 3. 4. 11. 20. 16. 11. 72. 19. 27. 38. 88. 124. 101. 48.

8. 1. 6. 1. 21. 3. 9. 1. 9. 2. 2. 2. 10. 12. 10. 14.

16. 7. 13. 10. 11. 12. 10. 12. 12. 12. 15. 15. 14. 13. 13. 7.

10. 12. 9. 16. 20. 11. 18. 20. 11. 20. 17. 18. 16. 15. 13. 15.

26. 13. 14. 10. 13. 18. 27. 34. 33. 29. 27. 36. 22. 18. 18. 20.

53. 19. 18. 17. 15. 28. 43. 44. 75. 89. 99. 64. 43. 39. 60. 59.

62. 19. 7. 10. 14. 18. 37. 32. 89. 72. 105. 77. 88. 49. 69. 53.

29. 9. 6. 0. 5. 11. 18. 46. 46. 46. 66. 85. 85. 74. 87. 57.

12. 4. 3. 0. 0. 2. 7. 15. 40. 19. 31. 57. 85. 55. 67. 47.

2. 0. 0. 0. 0. 1. 4. 6. 24. 20. 23. 80. 128. 104. 61. 19.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 1. 21. 23. 23. 0. 5.

1. 0. 0. 0. 4. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0.

7. 9. 6. 6. 8. 2. 1. 7. 8. 8. 1. 10. 8. 8. 7. 10.

4. 5. 5. 4. 5. 3. 3. 2. 9. 1. 5. 8. 5. 6. 6. 9.

4. 9. 5. 4. 5. 1. 11. 4. 8. 9. 6. 8. 7. 8. 11. 12.

35. 8. 15. 13. 7. 5. 12. 5. 22. 19. 22. 19. 25. 22. 44. 34.

17. 3. 5. 4. 3. 1. 8. 3. 6. 16. 36. 25. 28. 26. 53. 62.

7. 4. 1. 0. 0. 1. 4. 3. 8. 4. 16. 40. 27. 20. 41. 29.

0. 0. 0. 0. 0. 0. 2. 1. 1. 5. 10. 23. 37. 10. 17. 8.

1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 5. 14. 24. 32. 5. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 1. 2. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 0750.0750.0750.0750.0750.0750.0750.0750.0750.0750.0750.0750.0750.0750.0750.0750.

1000.1000.1000.1000.1000.1000.1000.1000.1000.1000.1000.1000.1000.1000.1000.1000.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.

0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.

Sheet 31 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Stack Release 3 97.5 meters 10.1-96.3 meters 4

5 Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 6 11 42771 1 7 0.500 2584.000 54.300 131.400 97.500 8 0.000 0.000 0.000 2.000 6.000 5.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 2.000 10.000 10.000 15.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 5.000 6.000 10.000 23.000 59.000 25.000 2.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 1.000 9 1.000 3.000 11.000 18.000 43.000 40.000 10.000 4.000 2.000 2.000 2.000 0.000 1.000 3.000 0.000 0.000 9 0.000 6.000 10.000 11.000 13.000 17.000 9.000 0.000 7.000 4.000 3.000 3.000 2.000 3.000 0.000 5.000 9 0.000 1.000 2.000 13.000 8.000 3.000 9.000 0.000 4.000 3.000 0.000 6.000 13.000 7.000 3.000 4.000 9 2.000 4.000 9.000 11.000 2.000 3.000 7.000 0.000 6.000 2.000 2.000 1.000 14.000 5.000 2.000 14.000 9 1.000 2.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 2.000 0.000 1.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 6.000 5.000 1.000 1.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 1.000 1.000 9.000 5.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 7.000 5.000 8.000 21.000 5.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 9 12.000 15.000 9.000 11.000 34.000 19.000 6.000 1.000 1.000 4.000 3.000 1.000 3.000 1.000 2.000 3.000 9 1.000 11.000 11.000 18.000 6.000 21.000 11.000 4.000 4.000 4.000 4.000 2.000 3.000 5.000 1.000 7.000 9 2.000 5.000 4.000 2.000 5.000 9.000 13.000 5.000 17.000 9.000 6.000 5.000 13.000 2.000 1.000 12.000 9 3.000 0.000 3.000 1.000 3.000 0.000 9.000 6.000 14.000 5.000 6.000 7.000 10.000 8.000 3.000 15.000 9 8.000 2.000 1.000 1.000 0.000 2.000 5.000 3.000 22.000 5.000 3.000 13.000 21.000 15.000 6.000 20.000 9 1.000 3.000 0.000 0.000 0.000 1.000 1.000 1.000 6.000 1.000 1.000 2.000 11.000 12.000 5.000 6.000 9 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 7.000 10.000 0.000 0.000 9 0.000 2.000 2.006 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 3.000 10.000 14.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 4.000 7.000 11.000 16.000 31.000 17.000 2.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 9 18.000 14.000 15.000 17.000 17.000 40.000 6.000 4.000 11.000 4.000 7.000 3.000 2.000 2.000 3.000 16.000 9 26.000 12.000 8.000 11.000 10.000 21.000 26.000 13.000 20.000 13.000 9.000 4.000 16.000 6.000 8.000 35.000 9 21.000 6.000 3.000 8.000 5.000 11.000 31.000 10.000 40.000 14.000 15.000 14.000 23.000 13.000 9.000 45.000 9 8.000 8.000 0.000 3.000 2.000 3.000 15.000 12.000 37.000 17.000 11.000 15.000 11.000 21.000 18.000 43.000 9 14.000 2.000 4.000 2.000 2.000 3.000 7.000 5.000 48.000 18.000 16.000 24.000 48.000 45.000 26.000 74.000 9 4.000 1.000 0.000 0.000 1.000 2.000 0.000 1.000 10.000 0.000 3.000 3.000 29.000 27.000 22.000 14.000 9 1.000 3.000 0.'ooo 0.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 2.000 16.000 33.000 12.000 4.000 9 .18.000 18.000 28.000 26.000 28.000 20.000 14.000 13.000 12.000 6.000 9.000 6.000 8.000 19.000 8.000 10.000 9 41.000 40.000 80.000 93.000 87.000 66.000 31.000 22.000 29.000 17.000 23.000 9.000 18.000 19.000 28.000 40.000 9 67.000 53.000 78.000 99.000130.000 77.000 54.000 50.000 39.000 31.000 28.000 24.000 30.000 19.000 40.000 50.000 9 209.000119.000120.000174.000227.000179.000192.000134.000171.000110.000 98.000 90.000 89.000 59.000118.000231.000 9 216.000175.000125.000187.000215.000168.000282.000234.000320.000203.000128.000 80.000109.000115.000186.000390.000 9 237.000151.000118.000123.000134.000129.000212.000204.000330.000193.000142.000 89.000134.000160.000235.000438.000 9 233.000 99.000 80.000 54.000103.000102.000129. 000147.000274.000132.000 80.000103.000142.000196.000332.000406.000 9 278.000113.000 52.000 44.000 87.000 94.000107.000 58.000345.000108.000 91.000139.000311.000543.000821.000694.000 9 69.000 28.000 13.000 11.000 24.000 24.000 15.000 10.000 96.000 21.000 15.000 20.000211.000392.000489.000230.000 9 25.000 10.000 10.000 2.000 18.000 7.000 8.000 1.000 40.000 6.000 5.000 12.000124.000227.000256.000 94.000 Sheet 32 of 62

ATTACHMENT C 9 21.000 15.000 15.000 20.000 24.000 17.000 26.000 16.000 26.000 16.000 17.000 19.000 30.000 17.000 23.000 11.000 9 39.000 29.000 21.000 41.000 36.000 43.000 35.000 43.000 44.000 40.000 42.000 35.000 24.000 19.000 16.000 23.000 9 50.000 43.000 35.000 51.000 65.000 48.000 90.000 69.000 60.000 65.000 63.000 36.000 42.000 23.000 30.000 36.000 9 137.000 92.000 91.000138.000168.000113.000186.000176.000263.000196.000164.000111.000102.000 82.000112.000115.000 9 177.000131.000 95.000 87.000123.000134.000205.000234.000432.000273.000191.000116. 000120.000116.000154.000200.000 9 180.000 79.000 69.000 40.000 68.000116.000152.000195.000423.000257.000165.000149.000193.000161.000255.000213.000 9 102.000 30.000 25.000 9.000 37.000 61.000 88.000142.000284.000182.000 99.000157.000213.000232.000277.000276.000 9 110.000 26.000 17.000 6.000 39.000 46.000 69.000103.000367.000150.000159.000177.000417.000441.000493.000336.000 9 24.000 10.000 3.000 4.000 11.000 20.000 16.000 11.000 72.000 19.000 27.000 38.000 88.000124.000101.000 48.000 9 8.000 1.000 6.000 1.000 21.000 3.000 9.000 1.000 9.000 2.000 2.000 2.000 10.000 12.000 10.000 14.000 9 16.000 7.000 13.000 10.000 11.000 12.000 10.000 12.000 12.000 12.000 15.000 15.000 14.000 13.000 13.000 7.000 9 10.000 12.000 9.000 16.000 20.000 11.000 18.000 20.000 11.000 20.000 17.000 18.000 16.000 15.000 13.000 15.000 9 26.000 13.000 14.000 10.000 13.000 18.000 27.000 34.000 33.000 29.000 27.000 36.000 22.000 18.000 18.000 20.000 9 53.000 19.000 18.000 17.000 15. 000 28.000 43.000 44.000 75.000 89.000 99.000 64.000 43.000 39.000 60.000 59.000 9 62.000 19.000 7.000 10.000 14.000 18.000 37.000 32.000 89.000 72.000105.000 77.000 88.000 49.000 69.000 53.000 9 29.000 9.000 6.000 0.000 5.000 11.000 18.000 46.000 46.000 46.000 66.000 85.000 85.000 74.000 87.000 57.000 9 12.000 4.000 3 .000 0.000 0.000 2.000 7.000 15.000 40.000 19.000 31.000 57.000 85.000 55.000 67.000 47.000 9 2.000 0.000 0.000 0.000 0.000 1.000 4.000 6.000 24.000 20.000 23.000 80.000128.000104.000 61.000 19.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 1.000 21. 000 23.000 23.000 0.000 5.000 1.000 0.000 0.000 0.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 1 000 1.000 0.000 0.000 0.000 9

9 7.000 9.000 6.000 6.000 8.000 2.000 1.000 7.000 8.000 8.000 1.000 10. 000 8.000 8.000 7.000 10.000 9 4.000 5.000 5.000 4.000 5.000 3.000 3.000 2.000 9.000 1.000 5.000 8. 000 5.000 6.000 6.000 9.000 4.000 9.000 5.000 4.000 5.000 1.000 11.000 4.000 8.000 9.000 6.000 8. 000 7.000 8.000 11.000 12.000 9

9 35.000 8.000 15.000 13.000 7.000 5.000 12.000 5.000 22.000 19.000 22.000 19. 000 25.000 22.000 44.000 34.000 9 17.000 3.000 5.000 4.000 3.000 1.000 8.000 3.000 6.000 16.000 36.000 25. 000 28.000 26.000 53.000 62.000 9 7.000 4.000 1.000 0.000 0.000 1.000 4.000 3.000 8.000 4.000 16.000 40. 000 27.000 20.000 41.000 29.000 9 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 5.000 10.000 23. 000 37.000 10.000 17.000 8.000 9 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 5.000 14. 000 24.000 32.000 5.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2. 000 1.000 2.000 0.000 0.000 9

9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 750. 750. 750. 750. 750. 750.

750. 750. 750. 750. 750. 750. 750. 750. 750. 750. 11 1000. 1000. 1000. 1000. 1000. 1000. 1000. 1000. 1000. 1000.

1000 1000. 1000. 1000. 1000. 1000. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 13 500. 500.

500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500.

14 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Sheet 33 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 750. 1. 66E-06 5. 73E-07 3.37E-07 1.06E-07 2. 02E-08 2.66E-09 13.0 S SSW 750. 1. 66E-06 6.37E-07 3.95E-07 1.40E-07 3 .15E-08 5. 09E-09 220.3 SSW SW .750. 2.07E-06 7.99E-07 4.96E-07 1.76E-07 3.99E-08 6.48E-09 26.1 SW WSW 750. 2.32E-06 9. 45E-07 6.03E-07 2.28E-07 5. 62E-08 1.01E-08 32.8 WSW W 750. 2. 60E-06 1. 13E-06 7.45E-07 3. 02E-07 8.26E-08 1. 69E-08 43.7 W WNW 750. 2.20E-06 9. 01E-07 5.76E-07 2. 19E-07 5.44E-08 9. 90E-09 25.6 WNW NW 750. 1.62E-06 6.16E-07 3.79E-07 1. 33E-07 2. 93E-08 4. 62E-09 10.2 NW NNW 750. 1.37E-06 4.32E-07 2. 43E-07 6.98E-08 1.16E-08 1.30E-09 5.9 NNW N 750. 1.51E-06 5. 60E-07 3. 42E-07 1.17E-07 2.51E-08 3. 81E-09 7.6 N NNE 750. 1.28E-06 4.44E-07 2. 62E-07 8.29E-08 1.59E-08 2. 11E-09 4.7 NNE NE 750. 1.27E-06 4.30E-07 2. 50E-07 7.69E-08 1.42E-08 1. 79E-09 6.3 NE ENE 750. 1.19E-06 4.05E-07 2. 37E-07 7.36E-08 1.38E-08 1. 77E-09 4.5 ENE E 750. 1. 33E-06 5. 13E-07 3. 18E-07 1.13E-07 2. 55E-08 4. 14E-09 6.7 E ESE 750. 1.16E-06 4.28E-07 2. 60E-07 8. 81E-08 1. 86E-08 2. 78E-09 7.1 ESE SE 750. 1.27E-06 4.06E-07 2 .30E-07 6. 67E-08 1.13E-08 1. 29E-09 5.6 SE SSE 750. 1.58E-06 5. 95E-07 3. 65E-07 1.27E-07 2.78E-08 4. 34E-09 9.9 SSE MAX X/Q 2. 60E-06 TOTAL HOURS AROUND SITE: 430.1 SRP 2.3.4 750. 2.00E-06 9. 08E-07 6.12E-07 2. 60E-07 7. 61E-08 1. 69E-08 SITE LIMIT 2. OOE-06 9. 08E-07 6.12E-07 2. 60E-07 7. 61E-08 1. 69E-08 0.5 PERCENT X/Q TO AN INDIVIDUAL IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 750. 5.32E-05 SSW 750. 5.32E-05 SW 750. 5.32E-05 WSW 750. 5.32E-05 W 750. 5.32E-05 WNW 750. 5.32E-05 NW 750. 5.32E-05 NNW 750. 5.32E-05 N 750. 5.32E-05 NNE 750. 5.32E-05 NE 750. 5.32E-05 ENE 750. 5.32E-05 E 750. 5.32E-05 ESE 750. 5.32E-05 Sheet 34 of 62

ATTACHMENT C SE 750. 5.32E-05 SSE 750. 5.32E-05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, AD)JUST THE ABOVE VALUES.

Sheet 35 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 1000. 1.64E-06 5. 99E-07 3 .62E-07 1.21E-07 2.51E-08 3. 67E-09 16.8 S SSW 1000. 1.61E-06 6.29E-07 3. 94E-07 1.42E-07 3.31E-08 5 54E-09 263.5 SSW SW 1000. 1. 95E-06 7.52E-07 4. 67E-07 1.66E-07 3.76E-08 6. 11E-09 30.5 SW WSW 1000. 2. 19E-06 8. 86E-07 5. 63E-07 2. 11E-07 5. 14E-08 9. 15E-09 37.7 WSW W 1000. 2. 32E-06 9. 89E-07 6. 45E-07 2. 55E-07 6. 75E-08 1. 33E-08 43.7 W WNW 1000. 2. 05E-06 8. 31E-07 5. 30E-07 1. 99E-07 4. 89E-08 8. 78E-09 32.8 WNW NW 1000. 1. 58E-06 6. 09E-07 3. 78E-07 1. 34E-07 3. 02E-08 4. 89E-09 12.6 NW NNW 1000. 1. 35E-06 4. 51E-07 2. 60E-07 7. 88E-08 1.42E-08 1. 74E-09 7.9 NNW N 1000. 1.50E-06 5.86E-07 3. 67E-07 1. 33E-07 3.08E-08 5. 15E-09 10.3 N NNE 1000. 1.27E-06 4. 54E-07 2. 72E-07 8. 94E-08 1. 81E-08 2. 57E-09 6.6 NNE NE 1000. 1.26E-06 4.41E-07 2. 62E-07 8. 40E-08 1. 64E-08 2 .24E-09 8.2 NE ENE 1000. 1.18E-06 4.15E-07 2 .46E-07 7. 96E-08 1. 57E-08 2. 16E-09 6.1 ENE E 1000. 1.31E-06 5.16E-07 3. 24E-07 1. 18E-07 2.75E-08 4. 66E-09 8.8 E ESE 1000. 1.13E-06 4.34E-07 2. 69E-07 9.49E-08 2. 13E-08 3.42E-09 9.0 ESE SE 1000. 1.26E-06 4.37E-07 2.57E-07 8. 1OE-08 1. 55E-08 2. 04E-09 7.7 SE SSE 1000. 1.57E-06 6.31E-07 3.99E-07 1.48E-07 3.56E-08 6.23E-09 13.4 SSE MAX X/Q 2.32E-06 TOTAL HOURS AROUND SITE: 515.8 SRP 2.3.4 1000. 1.91E-06 8.41E-07 5.57E-07 2 .28E-07 6.35E-08 1.33E-08 SITE LIMIT 1.91E-06 8.41E-07 5.57E-07 2 .28E-07 6.35E-08 1.33E-08 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 1000. 4.11E-05 SSW 1000. 4.11E-05 SW 1000. 4.11E-05 WSW 1000. 4.11E-05 W 1000. 4.11E-05 WNW 1000. 4.1lE-05 NW 1000. 4.11E-05 NNW 1000. 4.11E-05 N 1000. 4.11E-05 NNE 1000. 4.11E-05 NE 1000. 4.1lE-05 ENE 1000. 4.lIE-05 E 1000. 4.lIE-05 ESE 1000. 4.lIE-05 Sheet 36 of 62

ATTACHJMENT C SE 1000. 4.11E-05 SSE 1000. 4.11E-05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Off-Gas Stack to Control Room Intake (1500 and 2000 m; Tower 2 Meteorology; RG 1.23, Revision 1 Wind Speed Categories) 1 1111 Peach Bottom Stack Release 97.5 meters 10.1-96.3 meters Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 11 1 2584. 54.3131.4 97.5 0 0 0 2 6 5 0

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 2. 10. 10. 15. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

5. 6. 10. 23. 59. 25. 2. 0. 0. 1. 2. 0. 0. 0. 0. 1.

1. 3. 11. 18. 43. 40. 10. 4. 2. 2. 2. 0. 1. 3. 0. 0.

0. 6. 10. 11. 13. 17. 9. 0. 7. 4. 3. 3. 2. 3. 0. 5.

0. 1. 2. 13. 8. 3. 9. 0. 4. 3. 0. 6. 13. 7. 3. 4.

2. 4. 9. 11. 2. 3. 7. 0. 6. 2. 2. 1. 14. 5. 2. 14.

1. 2. 0. 1. 0. 1. 0. 0. 0. 0. 0. 2. 10. 2. 0. 1.

1. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 1. 6. 5. 1. 1.

0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 1. 1. 9. 5. 0. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0.

1. 7. 5. 8. 21. 5. 1. 0. 0. 0. 0. 0. 1. 0. 1. 0.

12. 15. 9. 11. 34. 19. 6. 1. 1. 4. 3. 1. 3. 1. 2. 3.

1. 11. 11. 18. 6. 21. 11. 4. 4. 4. 4. 2. 3. 5. 1. 7.

2. 5. 4. 2. 5. 9. 13. 5. 17. 9. 6. 5. 13. 2. 1. 12.

3. 0. 3. 1. 3. 0. 9. 6. 14. 5. 6. 7. 10. 8. 3. 15.

8. 2. 1. 1. 0. 2. 5. 3. 22. 5. 3. 13. 21. 15. 6. 20.

1. 3. 0. 0. 0. 1. 1. 1. 6. 1. 1. 2. 11. 12. 5. 6.

0. 0. 1. 0. 0. 0. 0. 0. 1. 1. 0. 1. 7. 10. 0. 0.

0. 2. 2. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 3. 10. 14. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

4. 7. 11. 16. 31. 17. 2. 0. 1. 0. 0. 0. 0. 0. 0. 1.

18. 14. 15. 17. 17. 40. 6. 4. 11. 4. 7. 3. 2. 2. 3. 16.

26. 12. 8. 11. 10. 21. 26. 13. 20. 13. 9. 4. 16. 6. 8. 35.

21. 6. 3. 8. 5. 11. 31. 10. 40. 14. 15. 14. 23. 13. 9. 45.

8. 8. 0. 3. 2. 3. 15. 12. 37. 17. 11. 15. 11. 21. 18. 43.

14. 2. 4. 2. 2. 3. 7. 5. 48. 18. 16. 24. 48. 45. 26. 74.

4. 1. 0. 0. 1. 2. 0. 1. 10. 0. 3. 3. 29. 27. 22. 14.

1. 3. 0. 0. 0. 0. 0. 0. 1. 0. 2. 2. 16. 33. 12. 4.

18. 18. 28. 26. 28. 20. 14. 13. 12. 6. 9. 6. 8. 19. 8. 10.

Sheet 37 of 62

ATTACHMENT C

41. 40. 80. 93. 87. 66. 31. 22. 29. 17. 23. 9. 18. 19. 28. 40.

67. 53. 78. 99. 130. 77. 54. 50. 39. 31. 28. 24. 30. 19. 40. 50.

209. 119. 120. 174. 227. 179. 192. 134. 171. 110. 98. 90. 89. 59. 118. 231.

216. 175. 125. 187. 215. 168. 282. 234. 320. 203. 128. 80. 109. 115. 186. 390.

237. 151. 118. 123. 134. 129. 212. 204. 330. 193. 142. 89. 134. 160. 235. 438.

233. 99. 80. 54. 103. 102. 129. 147. 274. 132. 80. 103. 142. 196. 332. 406.

278. 113. 52. 44. 87. 94. 107. 58. 345. 108. 91. 139. 311. 543. 821. 694.

69. 28. 13. 11. 24. 24. 15. 10. 96. 21. 15. 20. 211. 392. 489. 230.

25. 10. 10. 2. 18. 7. 8. 1. 40. 6. 5. 12. 124. 227. 256. 94.

21. 15. 15. 20. 24. 17. 26. 16. 26. 16. 17. 19. 30. 17. 23. 11.

39. 29. 21. 41. 36. 43. 35. 43. 44. 40. 42. 35. 24. 19. 16. 23.

50. 43. 35. 51. 65. 48. 90. 69. 60. i65. 63. 36. 42. 23. 30. 36.

137. 92. 91. 138. 168. 113. 186. 176. 263. 196. 164. 111. 102. 82. 112. 115.

177. 131. 95. 87. 123. 134. 205. 234. 432. 273. 191. 116. 120. 116. 154. 200.

180. 79. 69. 40. 68. 116. 152. 195. 423. 257. 165. 149. 193. 161. 255. 213.

102. 30. 25. 9. 37. 61. 88. 142. 284. 182. 99. 157. 213. 232. 277. 276.

110. 26. 17. 6. 39. 46. 69. 103. 367. 150. 159. 177. 417. 441. 493. 336.

24. 10. 3. 4. 11. 20. 16. 11. 72. 19. 27. 38. 88. 124. 101. 48.

8. 1. 6. 1. 21. 3. 9. 1. 9. 2. 2. 2. 10. 12. 10. 14.

16. 7. 13. 10. 11. 12. 10. 12. 12. 12. 15. 15. 14. 13. 13. 7.

10. 12. 9. 16. 20. 11. 18. 20. 11. 20. 17. 18. 16. 15. 13. 15.

26. 13. 14. 10. 13. 18. 27. 34. 33. 29. 27. 36. 22. 18. 18. 20.

53. 19. 18. 17. 15. 28. 43. 44. 75. 89. 99. 64. 43. 39. 60. 59.

62. 19. 7. 10. 14. 18. 37. 32. 89. 72. 105. 77. 88. 49. 69. 53.

29. 9. 6. 0. 5. 11. 18. 46. 46. 46. 66. 85. 85. 74. 87. 57.

12. 4. 3. 0. 0. 2. 7. 15. 40. 19. 31. 57. 85. 55. 67. 47.

2. 0. 0. 0. 0. 1. 4. 6. 24. 20. 23. 80. 128. 104. 61. 19.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 1. 21. 23. 23. 0. 5.

1. 0. 0. 0. 4. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0.

7. 9. 6. 6. 8. 2. 1. 7. 8. 8. 1. 10. 8. 8. 7. 10.

4. 5. 5. 4. 5. 3. 3. 2. 9. 1. 5. 8. 5. 6. 6. 9.

4. 9. 5. 4. 5. 1. 11. 4. 8. 9. 6. 8. 7. 8. 11. 12.

35. 8. 15. 13. 7. 5. 12. 5. 22. 19. 22. 19. 25. 22. 44. 34.

17. 3. 5. 4. 3. *1. 8. 3. 6. 16. 36. 25. 28. 26. 53. 62.

7. 4. 1. 0. 0. 1. 4. 3. 8. 4. 16. 40. 27. 20. 41. 29.

0. 0. 0. 0. 0. 0. 2. 1. 1. 5. 10. 23. 37. 10. 17. 8.

1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 5. 14. 24. 32. 5. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 1. 2. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 1500.1500.1500.1500.1500.1500.1500.1500.1500.1500.1500.1500.1500.1500.1500.1500.

2000.2000.2000.2000.2000.2000.2000.2000.2000.2000.2000.2000.2000.2000. 2000.2000.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.

0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.

Sheet 38 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Stack Release 3 97.5 meters 10.1-96.3 meters 4

5 Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 6 11 42771 1 7 0.500 2584.000 54.300 131.400 97.500 8 0.000 0.000 0.000 2.000 6.000 5.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 2.000 10.000 10.000 15.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 5.000 6.000 10.000 23.000 59.000 25.000 2.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 1.000 9 1.000 3.000 11.000 18.000 43.000 40.000 10.000 4.000 2.000 2.000 2.000 0.000 1.000 3.000 0.000 0.000 9 0.000 6.000 10.000 11.000 13.000 17.000 9.000 0.000 7.000 4.000 3.000 3.000 2.000 3.000 0.000 5.000 9 0.000 1.000 2.000 13.000 8.000 3.000 9.000 0.000 4.000 3.000 0.000 6.000 13.000 7.000 3.000 4.000 9 2.000 4.000 9.000 11.000 2.000 3.000 7.000 0.000 6.000 2.000 2.000 1.000 14.000 5.000 2.000 14.000 9 1.000 2.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 2.000 0.000 1.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 6.000 5.000 1.000 1.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 1.000 1.000 9.000 5.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 7.000 5.000 8.000 21.000 5.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 9 12.000 15.000 9.000 11.000 34.000 19.000 6.000 1.000 1.000 4.000 3.000 1.000 3.000 1.000 2.000 3.000 9 1.000 11.000 11.000 18.000 6.000 21.000 11.000 4.000 4.000 4.000 4.000 2.000 3 .000 5.000 1.000 7.000 9 2.000 5.000 4.000 2.000 5.000 9.000 13.000 5.000 17.000 9.000 6.000 5.000 13.000 2.000 1.000 12.000 9 3.000 0.000 3.000 1.000 3.000 0.000 9.000 6.000 14.000 5.000 6.000 7.000 10.000 8.000 3.000 15.000 9 8.000 2.000 1.000 1.000 0.000 2.000 5.000 3.000 22.000 5.000 3.000 13.000 21.000 15.000 6.000 20.000 9 1.000 3.000 0.000 0.000 0.000 1.000 1.000 1.000 6.000 1.000 1.000 2.000 11.000 12.000 5.000 6.000 9 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 7.000 10.000 0.000 0.000 9 0.000 2.000 2.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 3.000 10.000 14.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 4.000 7.000 11.000 16.000 31.000 17.000 2.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 9 18.000 14.000 15.000 17.000 17.000 40.000 6.000 4.000 11.000 4.000 7.000 3.000 2.000 2.000 3.000 16.000 9 26.000 12.000 8.000 11.000 10.000 21.000 26.000 13.000 20.000 13.000 9.000 4.000 16.000 6.000 8.000 35.000 9 21.000 6.000 3.000 8.000 5.000 11.000 31.000 10.000 40.000 14.000 15.000 14.000 23.000 13.000 9.000 45.000 9 8.000 8.000 0.000 3.000 2.000 3.000 15.000 12.000 37.000 17.000 11.000 15.000 11.000 21.000 18.000 43.000 9 14.000 2.000 4.000 2.000 2.000 3.000 7.000 5.000 48.000 18.000 16.000 24.000 48.000 45.000 26.000 74.000 9 4.000 1.000 0.000 0.000 1.000 2.000 0.000 1.000 10.000 0.000 3.000 3.000 29.000 27.000 22.000 14.000 9 1.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 2.000 16.000 33.000 12.000 4.000 9 18.000 18.000 28.000 26.000 28.000 20.000 14.000 13.000 12.000 6.000 9.000 6.000 8.000 19.000 8.000 10.000 9 41.000 40.000 80.000 93.000 87.000 66.000 31.000 22.000 29.000 17.000 23.000 9.000 18.000 19.000 28.000 40.000 9 67.000 53 .000 78.000 99.000130.000 77.000 54.000 50.000 39. 000 31.000 28.000 24.000 30.000 19.000 40.000 50.000 9 209.000119.000120.000174.000227.000179.000192.000134.000171.000110.000 98.000 90.000 89.000 59.000118.000231.000 9 216.000175.000125.000187.000215.000168.000282.000234.000320.000203.000128.000 80.000109.000115.000186.000390.000 9 237.000151.000118.000123.000134.000129.000212.000204.000330.000193.000142.000 89.000134.000160.000235.000438.000 9 233.000 99.000 80.000 54.000103.000102.000129.000147.000274.000132.000 80.000103.000142.000196.000332.000406.000 9 278.000113.000 52.000 44.000 87.000 94.000107.000 58.000345.000108.000 91.000139.000311.000543.000821.000694.000 9 69.000 28.000 13.000 11.000 24.000 24.000 15.000 10.000 96.000 21.000 15.000 20.000211.000392.000489.000230.000 9 25.000 10.000 10.000 2.000 18.000 7.000 8.000 1.000 40.000 6.000 5.000 12.000124.000227.000256.000 94.000 Sheet 39 of 62

ATTACHMENT C 9 21.000 15.000 15.000 20.000 24.000 17.000 26.000 16.000 26.000 16.000 17.000 19.000 30.000 17.000 23.000 11.000 9 39.000 29.000 21.000 41.000 36.000 43.000 35.000 43.000 44.000 40.000 42.000 35.000 24.000 19.000 16.000 23.000 9 50.000 43.000 35.000 51.000 65.000 48.000 90.000 69.000 60.000 65.000 63.000 36.000 42.000 23.000 30.000 36.000 9 137.000 92.000 91.000138.000168.000113.000186.000176.000263.000196.000164.000111.000102.000 82.000112.000115.000 9 177.000131.000 95.000 87.000123.000134.000205.000234.000432.000273.000191.000116.000120.000116.000154.000200.000 9 180.000 79.000 69.000 40.000 68.000116.000152.000195.000423.000257.000165.000149.000193.000161.000255.000213.000 9 102.000 30.000 25.000 9.000 37.000 61.000 88.000142.000284.000182.000 99.000157.000213.000232.000277.000276.000 9 110.000 26.000 17.000 6.000 39.000 46.000 69.000103.000367.000150.000159.000177.000417.000441.000493.000336.000 9 24.000 10.000 3 .000 4.000 11.000 20.000 16.000 11.000 72.000 19.000 27.000 38.000 88.000124.000101.000 48.000 9 8.000 1.000 6.000 1.000 21.000 3.000 9.000 1.000 9.000 2.000 2.000 2.000 10.000 12.000 10.000 14.000 9 16.000 7.000 13.000 10.000 11.000 12.000 10.000 12.000 12.000 12.000 15.000 15.000 14.000 13.000 13.000 7.000 9 10.000 12.000 9.000 16.000 20.000 11.000 18.000 20.000 11.000 20.000 17.000 18.000 16.000 15.000 13.000 15.000 9 26.000 13.000 14.000 10.000 13.000 18.000 27.000 34.000 33.000 29.000 27.000 36.000 22.000 18.000 18.000 20.000 9 53.000 19.000 18.000 17.000 15.000 28.000 43.000 44.000 75.000 89.000 99.000 64.000 43.000 39.000 60.000 59.000 9 62.000 19.000 7.000 10.000 14.000 18.000 37.000 32.000 89.000 72.000105.000 77.000 88.000 49.000 69.000 53.000 9 29.000 9.000 6.000 0.000 5.000 11.000 18.000 46.000 46.000 46.000 66.000 85.000 85.000 74.000 87.000 57.000 9 12.000 4.000 3.000 0.000 0.000 2.000 7.000 15.000 40.000 19.000 31.000 57.000 85.000 55.000 67.000 47.000 9 2.000 0.000 0.000 0.000 0.000 1.000 4.000 6.000 24.000 20.000 23.000 80.000128.000104.000 61.000 19.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 1.000 21.000 23.000 23.000 0.000 5.000 9 1.000 0.000 0.000 0.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 0.000 0.000 9 7.000 9.000 6.000 6.000 8.000 2.000 1.000 7.000 8.000 8.000 1.000 10.000 8.000 8.000 7.000 10.000 9 4.000 5.000 5.000 4.000 5.000 3.000 3.000 2.000 9.000 1.000 5.000 8.000 5.000 6.000 6.000 9.000 9 4.000 9.000 5.000 4.000 5.000 1.000 11.000 4.000 8.000 9.000 6.000 8.000 7.000 8.000 11.000 12.000 9 35.000 8.000 15.000 13.000 7.000 5.000 12.000 5.000 22.000 19.000 22.000 19.000 25.000 22.000 44.000 34.000 9 17.000 3.000 5.000 4.000 3.000 1.000 8.000 3.000 6.000 16.000 36.000 25.000 28.000 26.000 53.000 62.000 9 7.000 4.000 1.000 0.000 0.000 1.000 4.000 3.000 8.000 4.000 16.000 40.000 27.000 20.000 41.000 29.000 9 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 5.000 10.000 23.000 37.000 10.000 17.000 8.000 9 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 5.000 14.000 24.000 32.000 5.000 4.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 2.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 1500. 1500. 1500. 1500. 1500. 1500.

1500. 1500. 1500. 1500. 1500. 1500. 1500. 1500. 1500. 1500. 11 2000. 2000. 2000. 2000. 2000. 2000. 2000. 2000. 2000.

2000. 2000. 2000. 2000. 2000. 2000. 2000. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 13 500. 500.

500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500.

14 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0 Sheet 40 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 1500. 1. 68E-06 6.58E-07 4.12E-07 1. 49E-07 3 .46E-08 5. 80E-09 18.8 S SSW 1500. 1. 58E-06 6.28E-07 3.97E-07. 1. 46E-07 3 .49E-08 6. 04E-09 298.3 SSW SW 1500. 1. 89E-06 7.42E-07 4.64E-07 1. 68E-07 3.90E-08 6. 53E-09 33.3 SW WSW 1500. 2. 09E-06 8.48E-07 5.40E-07 2. 03E-07 4. 98E-08 8. 92E-09 40.2 WSW W 1500. 2. 18E-06 9.07E-07 5.85E-07 2. 26E-07 5. 77E-08 1. 09E-08 43.7 W WNW 1500. 1. 92E-06 7. 84E-07 5.01E-07 1. 90E-07 4.71E-08 8. 56E-09 32.6 WNW NW 1500. 1. 55E-06 6. 17E-07 3.89E-07 1. 43E-07 3 .40E-08 5. 86E-09 13.1 NW NNW 1500. 1.36E-06 4.96E-07 3.OOE-07 1. 01E-07 2. 1OE-08 3. 08E-09 12.9 NNW N 1500. 1 .48E-06 6. 16E-07 3.98E-07 1. 54E-07 3.93E-08 7. 41E-09 12.1 N NNE 1500. 1. 27E-06 4. 81E-07 2.96E-07 1. 03E-07 2.28E-08 3. 59E-09 9.4 NNE NE 1500. 1 .26E-06 4. 67E-07 2.84E-07 9. 71E-08 2.07E-08 3. 14E-09 10.3 NE ENE 1500. 1. 17E-06 4. 31E-07 2.62E-07 8. 90E-08 1.89E-08 2. 84E-09 7.0 ENE E 1500. 1. 27E-06 5.17E-07 3.29E-07 1. 24E-07 3. 05E-08 5. 49E-09 11.5 E ESE 1500. 1. 12E-06 4. 56E-07 2.92E-07 1 .10E-07 2. 74E-08 4. 97E-09 10.2 ESE SE 1500. 1 .29E-06 5. 05E-07 3.17E-07 1 .15E-07 2. 68E-08 4. 53E-09 9.1 SE SSE 1500. 1. 56E-06 6. 75E-07 4.43E-07 1. 78E-07 4. 82E-08 9. 73E-09 15.2 SSE MAX X/Q 2. 18E-06 TOTAL HOURS AROUND SITE: 577.7 SRP 2.3.4 1500. 1.89E-06 8.05E-07 5.26E-07 2. 08E-07 5. 52E-08 1. 09E-08 SITE LIMIT 1.89E-06 8.05E-07 5.26E-07 2. 08E-07 5.52E-08 1. 09E-08 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 1500. 2.85E-05 SSW 1500. 2.85E-05 SW 1500. 2.85E-05 WSW 1500. 2.85E-05 W 1500. 2.85E-05 WNW 1500. 2.85E-05 NW 1500. 2.85E-05 NNW 1500. 2.85E-05 N 1500. 2.85E-05 NNE 1500. 2.85E-05 NE 1500. 2.85E-05 ENE 1500. 2.85E-05 E 1500. 2.85E-05 ESE 1500. 2.85E-05 Sheet 41 of 62

ATTACHMENT C SE 1500. 2.85E-05 SSE 1500. 2.85E-05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 42 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 2000. 1.60E-06 6.79E-07 4.43E-07 1.75E-07 4 62E-08 9. 06E-09 21.5 S SSW 2000. 1.49E-06 6.21E-07 4.01E-07 1.56E-07 4 OOE-08 7.58E-09 302.4 SSW SW 2000. 1.83E-06 7.50E-07 4.80E-07 1.83E-07 4. 57E-08 8. 36E-09 34.7 SW WSW 2000. 2. O1E-06 8.45E-07 5.49E-07 2. 15E-07 5. 58E-08 1. 07E-08 41.6 WSW W 2000. 2. 05E-06 8. 86E-07 5.82E-07 2.34E-07 6. 31E-08 1.27E-08 43.7 W WNW 2000. 1. 82E-06 7.75E-07 5.05E-07 1.99E-07 5. 24E-08 1. 02E-08 33.9 WNW NW 2000, 1. 49E-06 6.32E-07 4.11E-07 1. 62E-07 4. 24E-08 8.25E-09 13.5 NW NNW 2000, 1. 33E-06 5. 38E-07 3.42E-07 1.28E-07 3. lIE-08 5. 51E-09 14.0 NNW N 2000. 1. 43E-06 6.35E-07 4.24E-07 1.76E-07 5. OOE-08 1. 07E-08 16.2 N NNE 2000M 1.22E-06 5. 01E-07 3.20E-07 1. 21E-07 3. 01E-08 5. 48E-09 10.0 NNE NE 2000. 1.22E-06 4. 85E-07 3.06E-07 1.13E-07 2. 69E-08 4. 66E-09 10.9 NE ENE 2000. 1.12E-06 4.42E-07 2.77E-07 1. O1E-07 2 .36E-08 4. 01E-09 7.7 ENE E 2000. 1.21E-06 5. 19E-07 3.40E-07 1.35E-07 3 60E-08 7.13E-09 12.3 E ESE 2000, 1.07E-06 4. 71E-07 3.13E-07 1.29E-07 3 61E-08 7.60E-09 11.3 ESE SE 2000, 1.26E-06 5. 56E-07 3.69E-07 1.51E-07 4. 21E-08 8.80E-09 12.8 SE SSE 2000. 1.51E-06 6. 99E-07 4.76E-07 2. 07E-07 6. 25E-08 1.45E-08 18.7 SSE MAX X/Q 2.05E-06 TOTAL HOURS AROUND SITE: 605.2 SRP 2.3.4 2000, 1.80E-06 8.11E-07 5.44E-07 2.29E-07 6. 61E-08 1.45E-08 SITE LIMIT 1.80E-06 8.11E-07 5.44E-07 2. 29E-07 6. 61E-08 1.45E-08 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 2000. 2.20E-05 SSW 2000, 2.20E-05 SW 2000, 2.20E-05 WSW 2000, 2.20E-05 W 2000, 2.20E-05 WNW 2000, 2.20E-05 NW 2000, 2.20E-05 NNW 2000, 2.20E-05 N 2000, 2.20E-05 NNE 2000, 2.20E-05 NE 2000, 2.20E-05 ENE 2000, 2.20E-05 E 2000, 2.20E-05 ESE 2000, 2.20E-05 Sheet 43 of 62

ATTACHMENT C SE 2000. 2.20E-05 SSE 2000. 2.20E-05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Off-Gas Stack to Control Room Intake (3000 and 4000 m; Tower 2 Meteorology; RG 1.23. Revision 1 Wind Speed Categories) 1 1111 Peach Bottom Stack Release 97.5 meters 10.1-96.3 meters Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind, 33-316~ ft Delta T 11 1 2584. 54.3131.4 97.5 0 0 0 2 6 5 0

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 2. 10. 10. 15. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

5. 6. 10. 23. 59. 25. 2. 0. 0. 1. 2. 0. 0. 0. 0. 1.

1. 3. 11. 18. 43. 40. 10. 4. 2. 2. 2. 0. 1. 3. 0. 0.

0. 6. 10. 11. 13. 17. 9. 0. 7. 4. 3. 3. 2. 3. 0. 5.

0. 1. 2. 13. 8. 3. 9. 0. 4. 3. 0. 6. 13. 7. 3. 4.

2. 4. 9. 11. 2. 3. 7. 0. 6. 2. 2. 1. 14. 5. 2. 14.

1. 2. 0. 1. 0. 1. 0. 0. 0. 0. 0. 2. 10. 2. 0. 1.

1. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 1. 6. 5. 1. 1.

0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 1. 1. 9. 5. 0. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0.

1. 7. 5. 8. 21. 5. 1. 0. 0. 0. 0. 0. 1. 0. .1. 0.

12. 15. 9. 11. 34. 19. 6. 1. 1. 4. 3. 1. 3. 1. 2. 3.

1. 11. 11. 18. 6. 21. 11. 4. 4. 4. 4. 2. 3. 5. 1. 7.

2. 5. 4. 2. 5. 9. 13. 5. 17. 9. 6. 5. 13. 2. 1. 12.

3. 0. 3. 1. 3. 0. 9. 6. 14. 5. 6. 7. 10. 8. 3. 15.

8. 2. 1. 1. 0. 2. 5. 3. 22. 5. 3. 13. 21. 15. 6. 20.

1. 3. 0. 0. 0. 1. 1. 1. 6. 1. 1. 2. 11. 12. 5. 6.

0. 0. 1. 0. 0. 0. 0. 0. 1. 1. 0. 1. 7. 10. 0. 0.

0. 2. 2. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 3. 10. 14. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

4. 7. 11. 16. 31. 17. 2. 0. 1.- 0. 0. 0. 0. 0. 0. 1.

18. 14. 15. 17. 17. 40. 6. 4. 11. 4. 7. 3. 2. 2. 3. 16.

26. 12. 8. 11. 10. 21. 26. 13. 20. 13. 9. 4. 16. 6. 8. 35.

21. 6. 3. 8. 5. 11. 31. 10. 40. 14. 15. 14. 23. 13. 9. 45.

8. 8. 0. 3. 2. 3. 15. 12. 37. 17. 11. 15. 11. 21. 18. 43.

14. 2. 4. 2. 2. 3. 7. 5. 48. 18. 16. 24. 48. 45. 26. 74.

4. 1. 0. 0. 1. 2. 0. 1. 10. 0. 3. 3. 29. 27. 22. 14.

1. 3. 0. 0. 0. 0. 0. 0. 1. 0. 2. 2. 16. 33. 12. 4.

18. 18. 28. 26. 28. 20. 14. 13. 12. 6. 9. 6. 8. 19. 8. 10.

Sheet 44 of 62

ATTACHMENT C

41. 40. 80. 93. 87. 66. 31. 22. 29. 17. 23. 9. 18. 19. 28. 40.

67. 53. 78. 99. 130. 77. 54. 50. 39. 31. 28. 24. 30. 19. 40. 50.

209. 119. 120. 174. 227. 179. 192. 134. 171. 110. 98. 90. 89. 59. 118. 231.

216. 175. 125. 187. 215. 168. 282. 234. 320. 203. 128. 80. 109. 115. 186. 390.

237. 151. 118. 123. 134. 129. 212. 204. 330. 193. 142. 89. 134. 160. 235. 438.

233. 99. 80. 54. 103. 102. 129. 147. 274. 132. 80. 103. 142. 196. 332. 406.

278. 113. 52. 44. 87. 94. 107. 58. 345. 108. 91. 139. 311. 543. 821. 694.

69. 28. 13. 11. 24. 24. 15. 10. 96. 21. 15. 20. 211. 392. 489. 230.

25. 10. 10. 2. 18. 7. 8. 1. 40. 6. 5. 12. 124. 227. 256. 94.

21. 15. 15. 20. 24. 17. 26. 16. 26. 16. 17. 19. 30. 17. 23. 11.

39. 29. 21. 41. 36. 43. 35. 43. 44. 40. 42. 35. 24. 19. 16. 23.

50. 43. 35. 51. 65. 48. 90. 69. 60. 65. 63. 36. 42. 23. 30. 36.

137. 92. 91. 138. 168. 113. 186. 176. 263. 196. 164. 111. 102. 82. 112. 115.

177. 131. 95. 87. 123. 134. 205. 234. 432. 273. 191. 116. 120. 116. 154. 200.

180. 79. 69. 40. 68. 116. 152. 195. 423. 257. 165. 149. 193. 161. 255. 213.

102. 30. 25. 9. 37. 61. 88. 142. 284. 182. 99. 157. 213. 232. 277. 276.

110. 26. 17. 6. 39. 46. 69. 103. 367. 150. 159. 177. 417. 441. 493. 336.

24. 10. 3. 4. 11. 20. 16. 11. 72. 19. 27. 38. 88. 124. 101. 48.

8. 1. 6. 1. 21. 3. 9. 1. 9. 2. 2. 2. 10. 12. 10. 14.

16. 7. 13. 10. 11. 12. 10. 12. 12. 12. 15. 15. 14. 13. 13. 7.

10. 12. 9. 16. 20. 11. 18. 20. 11. 20. 17. 18. 16. 15. 13. 15.

26. 13. 14. 10. 13. 18. 27. 34. 33. 29. 27. 36. 22. 18. 18. 20.

53. 19. 18. 17. 15. 28. 43. 44. 75. 89. 99. 64. 43. 39. 60. 59.

62. 19. 7. 10. 14. 18. 37. 32. 89. 72. 105. 77. 88. 49. 69. 53.

29. 9. 6. 0. 5. 11. 18. 46. 46. 46. 66. 85. 85. 74. 87. 57.

12. 4. 3. 0. 0. 2. 7. 15. 40. 19. 31. 57. 85. 55. 67. 47.

2. 0. 0. 0. 0. 1. 4. 6. 24. 20. 23. 80. 128. 104. 61. 19.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 1. 21. 23. 23. 0. 5.

1. 0. 0. 0. 4. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0.

7. 9. 6. 6. 8. 2. 1. 7. 8. 8. 1. 10. 8. 8. 7. 10.

4. 5. 5. 4. 5. 3. 3. 2. 9. 1. 5. 8. 5. 6. 6. 9.

4. 9. 5. 4. 5. 1. 11. 4. 8. 9. 6. 8. 7. 8. 11. 12.

35. 8. 15. 13. 7. 5. 12. 5. 22. 19. 22. 19. 25. 22. 44. 34.

17. 3. 5. 4. 3. 1. 8. 3. 6. 16. 36. 25. 28. 26. 53. 62.

7. 4. 1. 0. 0. 1. 4. 3. 8. 4. 16. 40. 27. 20. 41. 29.

0. 0. 0. 0. 0. 0. 2. 1. 1. 5. 10. 23. 37. 10. 17. 8.

1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 5. 14. 24. 32. 5. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 1. 2. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 3000.3000.3000.3000.3000.3000.3000.3000.3000.3000.3000.3000.3000.3000.3000.3000.

4000.4000.4000.4000.4000.4000.4000.4000.4000.4000.4000.4000.4000.4000.4000.4000.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1i. 1. 1. 1. 1. 1. 1. 1. 1.

0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.

0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.

Sheet 45 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Stack Release 3 97.5 meters 10.1-96.3 meters 4

5 Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 6 11 42771 1 7 0.500 2584.000 54.300 131.400 97.500 8 0.000 0.000 0.000 2.000 6.000 5.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 2.000 10.000 10.000 15.000 3.00.0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 5.000 6.000 10.000 23.000 59.000 25.000 2.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 1.000 9 1.000 3.000 11.000 18.000 43.000 40.000 10.000 4.000 2.000 2.000 2.000 0.000 1.000 3.000 0.000 0.000 9 0.000 6.000 10.000 11.000 13.000 17.000 9.000 0.000 7.000 4.000 3.000 3.000 2.000 3.000 0.000 5.000 9 0.000 1.000 2.000 13.000 8.000 3.000 9.000 0.000 4.000 3.000 0.000 6.000 13.000 7.000 3.000 4.000 9 2.000 4.000 9.000 11.000 2.000 3.000 7.000 0.000 6.000 2.000 2.000 1.000 14.000 5.000 2.000 14.000 9 1.000 2.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 2.000 0.000 1.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 6.000 5.000 1.000 1.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 1.000 1.000 9.000 5.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 7.000 5.000 8.000 21.000 5.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 9 12.000 15.000 9.000 11.000 34.000 19.000 6.000 1.000 1.000 4.000 3.000 1.000 3.000 1.000 2.000 3.000 9 1.000 11.000 11.000 18.000 6.000 21.000 11.000 4.000 4.000 4.000 4.000 2.000 3.000 5.000 1.000 7.000 9 2.000 5.000 4.000 2.000 5.000 9.000 13.000 5.000 17.000 9.000 6.000 5.000 13.000 2.000 1.000 12.000 9 3.000 0.000 3.000 1.000 3.000 0.000 9.000 6.000 14.000 5.000 6.000 7.000 10.000 8.000 3.000 15.000 9 8.000 2.000 1.000 1.000 0.000 2.000 5.000 3.000 22.000 5.000 3.000 13.000 21.000 15.000 6.000 20.000 9 1.000 3.000 0.000 0.000 0.000 1.000 1.000 1.000 6.000 1.000 1.000 2.000 11.000 12.000 5.000 6.000 9 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 7.000 10.000 0.000 0.000 9 0.000 2.000 2.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 3.000 10.000 14.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 4.000 7.000 11.000 16.000 31.000 17.000 2.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 9 18.000 14.000 15.000 17.000 17.000 40.000 6.000 4.000 11.000 4.000 7.000 3.000 2.000 2.000 3.000 16.000 9 26.000 12.000 8.000 11.000 10.000 21.000 26.000 13.000 20.000 13.000 9.000 4.000 16.000 6.000 8.000 35.000 9 21.000 6.000 3.000 8.000 5.000 11.000 31.000 10.000 40.000 14.000 15.000 14.000 23.000 13.000 9.000 45.000 9 8.000 8.000 0.000 3.000 2.000 3.000 15.000 12.000 37.000 17.000 11.000 15.000 11.000 21.000 18.000 43.000 9 14.000 2.000 4.000 2.000 2.000 3.000 7.000 5.000 48.000 18.000 16.000 24.000 48.000 45.000 26.000 74.000 9 4.000 1.000 0.000 0.000 1.000 2.000 0.000 1.000 10.000 0.000 3.000 3.000 29.000 27.000 22.000 14.000 9 1.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 2.000 16.000 33.000 12.000 4.000 9 18.000 18.000 28.000 26.000 28.000 20.000 14.000 13.000 12.000 6.000 9.000 6.000 8.000 19.000 8.000 10.000 9 41.000 40.000 80.000 93.000 87-000 66.000 31.000 22.000 29.000 17.000 23.000 9.000 18.000 19.000 28.000 40.000 9 67.000 53.000 78.000 99.000130.000 77.000 54.000 50.000 39.000 31.000 28.000 24.000 30.000 19.000 40.000 50.000 9 209.000119.000120.000174.000227.000179.000192.000134.000171.000110.000 98.000 90.000 89.000 59.000118.000231.000 9 216.000175.000125.000187.000215.000168.000282.000234.000320.000203.000128.000 80.000109.000115.000186.000390.000 9 237.000151.000118.000123.000134.000129.000212.000204.000330.000193.000142.000 89.000134.000160.000235.000438.000 9 233.000 99.000 80.000 54.000103.000102.000129.000147.000274.000132.000 80.000103.000142.000196.000332.000406.000 9 278.000113.000 52.000 44.000 87.000 94.000107.000 58.000345.000108.000 91.000139.000311.000543.000821.000694.000 9 69.000 28.000 13.000 11.000 24.000 24.000 15.000 10.000 96.000 21.000 15.000 20.000211.000392.000489.000230.000 9 25.000 10.000 10.000 2.000 18.000 7.000 8.000 1.000 40.000 6.000 5.000 12.000124.000227.000256.000 94.000 Sheet 46 of 62

ATTACHMENT C 9 21.000 15.000 15.000 20.000 24.000 17.000 26.000 16.000 26.000 16.000 17.000 19.000 30.000 17.000 23.000 11.000 9 39.000 29.000 21.000 41.000 36.000 43.000 35.000 43.000 44.000 40.000 42.000 35.000 24.000 19.000 16.000 23.000 9 50.000 43.000 35.000 51.000 65.000 48.000 90.000 69.000 60.000 65.000 63.000 36.000 42.000 23.000 30.000 36.000 9 137.000 92.000 91.000138.000168.000113.000186.000176.000263.000196.000164. 000111.000102.000 82.000112.000115.000 9 177.000131.000 95.000 87.000123.000134.000205.000234.000432.000273.000191.000116.000120.000116.000154.000200.000 9 180.000 79.000 69.000 40.000 68.000116.000152.000195.000423.000257.000165.000149.000193. 000161.000255.000213.000 9 102.000 30.000 25.000 9.000 37.000 61.000 88.000142.000284.000182.000 99.000157.000213.000232.000277.000276.000 9 110.000 26.000 17.000 6.000 39.000 46.000 69.000103.000367.000150.000159.000177.000417.000441.000493. 000336.000 9 24.000 10.000 3.000 4.000 11.000 20.000 16.000 11.000 72.000 19.000 27.000 38.000 88.000124.000101.000 48.000 9 8.000 1.000 6.000 1.000 21.000 3.000 9.000 1.000 9.000 2.000 2.000 2.000 10.000 12.000 10.000 14.000 9 16.000 7.000 13.000 10.000 11.000 12.000 10.000 12.000 12.000 12.000 15.000 15.000 14.000 13.000 13.000 7.000 9 10.000 12.000 9.000 16.000 20.000 11.000 18.000 20.000 11.000 20.000 17.000 18.000 16.000 15.000 13.000 15.000 9 26.000 13.000 14.000 10. 000 13.000 18.000 27.000 34.000 33.000 29.000 27.000 36.000 22.000 18.000 18.000 20.000 9 53.000 19.000 18.000 17.000 15.000 28.000 43.000 44.000 75.000 89.000 99.000 64.000 43.000 39.000 60.000 59.000 9 62.000 19.000 7.000 10.000 14.000 18.000 37.000 32.000 89.000 72.000105.000 77.000 88.000 49.000 69.000 53.000 9 29.000 9.000 6.000 0.000 5.000 11.000 18.000 46.000 46.000 46.000 66.000 85.000 85.000 74.000 87.000 57.000 9 12.000 4.000 3.000 0.000 0.000 2.000 7.000 r5.000 40.000 19.000 31.000 57.000 85-000 55.000 67-000 47.000 9 2.000 0.000 0.000 0.000 0.000 1.000 4.000 6.000 24.000 20.000 23.000 80.000128.000104.000 61.000 19.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 1.000 21.000 23.000 23.000 0.000 5.000 9 1.000 0.000 0.000 0.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 0.000 0.000 9 7.000 9.000 6.000 6.000 8.000 2.000 1.000 7.000 8.000 8.000 1.000 10.000 8.000 8.000 7.000 10.000 9 4.000 5.000 5.000 4.000 5.000 3.000 3.000 2.000 9.000 1.000 5.000 8.000 5.000 6.000 6.000 9.000 9 4.000 9.000 5.000 4.000 5.000 1.000 11.000 4.000 8.000 9.000 6.000 8.000 7.000 8.000 11.000 12.000 9 35.000 8.000 15.000 13.000 7.000 5.000 12.000 5.000 22.000 19.000 22.000 19.000 25.000 22.000 44.000 34.000 9 17.000 3 .000 5.000 4.000 3.000 1.000 8.000 3.000 6.000 16.000 36. 000 25.000 28.000 26.000 53.000 62.000 9 7.000 4.000 1.000 0.000 0.000 1.000 4.000 3.000 8..000 4.000 16.000 40.000 27.000 20.000 41.000 29.000 9 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 5.000 10.000 23.000 37.000 10.000 17.000 8.000 9 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 5.000 14.000 24.000 32.000 5.000 4.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 2.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 3000. 3000. 3000. 3000. 3000. 3000.

3000. 3000. 3000. 3000. 3000. 3000. 3000. 3000. 3000. 3000. 11 4000. 4000. 4000. 4000. 4000. 4000. 4000. 4000. 4000.

4000. 4000. 4000. 4000. 4000. 4000. 4000. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 13 500. 500.

500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500.

14 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Sheet 47 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 3000. 1.49E-06 6. 92E-07 4.71E-07 2.05E-07 6. 19E-08 1.43E-08 22.0 S SSW 3000. 1.37E-06 6. 1OE-07 4.08E-07 1.70E-07 4. 83E-08 1. 04E-08 303.1 SSW SW 3000. 1.74E-06 7. 58E-07 5.OOE-07 2.03E-07 5. 55E-08 1.14E-08 34.8 SW WSW 3000. 1. 88E-06 8.37E-07 5.58E-07 2. 32E-07 6. 55E-08 1.40E-08 40.6 WSW W 3000. 1. 95E-06 8. 85E-07 5.97E-07 2.54E-07 7. 43E-08 1. 65E-08 43.7 W WNW 3000. 1. 64E-06 7.38E-07 4.96E-07 2. 09E-07 6. 04E-08 1. 32E-08 28.8 WNW NW 3000. 1. 40E-06 6.44E-07 4.36E-07 1. 87E-07 5. 54E-08 1.25E-08 18.5 NW NNW 3000. 1. 29E-06 5.76E-07 3.85E-07 1. 60E-07 4. 56E-08 9.80E-09 16.1 NNW N 3000. 1 .36E-06 6. 58E-07 4.57E-07 2. 07E-07 6. 64E-08 1.65E-08 15.6 N NNE 3000. 1. 16E-06 5. 22E-07 3.49E-07 1.46E-07 4. 18E-08 9.06E-09 11.7 NNE NE 3000. 1.17E-06 5. 06E-07 3.34E-07 1.35E-07 3. 68E-08 7.51E-09 12.4 NE ENE 3000. 1. 07E-06 4. 57E-07 2.99E-07 1. 19E-07 3. 16E-08 6.25E-09 9.9 ENE E 3000. 1. 16E-06 5. 29E-07 3.58E-07 1. 53E-07 4. 53E-08 1.02E-08 12.5 E ESE 3000. 1.01E-06 4. 86E-07 3.37E-07 1. 52E-07 4. 85E-08 1.20E-08 11.8 ESE SE 3000. 1.24E-06 6. 02E-07 4.20E-07 1.92E-07 6. 24E-08 1.58E-08 14.2 SE SSE 3000. 1.40E-06 7. 02E-07 4.97E-07 2. 36E-07 8. 06E-08 2.17E-08 16.1 SSE MAX X/Q 1.95E-06 TOTAL HOURS AROUND SITE: 611.9 SRP 2.3.4 3000. 1.71E-06 8.33E-07 5.80E-07 2.65E-07 8. 60E-08 2.17E-08 SITE LIMIT 1.71E-06 8.33E-07 5.80E-07 2.65E-07 8. 60E-08 2.17E-08 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 3000. 1.52E-05 SSW 3000. 1.52E-05 SW 3000. 1.52E-05 WSW 3000. 1.52E-05 W 3000. 1.52E-05 WNW 3000. 1.52E-05 NW 3000. 1.52E-05 NNW 3000. 1.52E-05 N 3000. 1.52E-05 NNE 3000. 1.52E-05 NE 3000. 1.52E-05 ENE 3000. 1.52E-05 E 3000. 1.52E-05 ESE 3000. 1.52E-05 Sheet 48 of 62

ATTACHMENT C SE 3000. 1.52E-05 SSE 3000. 1.52E-05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 49 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUA]L AVERAGE IN SECTOR SECTOR S 4000. 1 50E-06 7. 1OE-07 4.88E-07 2.17E-07 6.77E-08 1 . 63E-08 25.6 S SSW 4000. 1. 35E-06 6.13E-07 4.13E-07 1.75E-07 5.10E-08 1. 13E-08 351.8 SSW SW 4000. 1. 70E-06 7. 50E-07 4.99E-07 2. 06E-07 5.79E-08 1. 23E-08 35.1 SW WSW 4000. 1. 82E-06 8.21E-07 5.52E-07 2.33E-07 6.76E-08 1 49E-08 40.9 WSW W 4000. 1. 87E-06 8. 65E-07 5.88E-07 2.55E-07 7.69E-08 1. 77E-08 43.7 W WNW 4000. 1. 57E-06 7. 21E-07 4.89E-07 2. 1OE-07 6.24E-08 1. 41E-08 29.1 WNW NW 4000. 1. 42E-06 6. 64E-07 4.54E-07 1.99E-07 6.09E-08 1. 43E-08 22.3 NW NNW 4000. 1. 28E-06 5.91E-07 4.01E-07 1.73E-07 5.17E-08 1. 18E-08 17.7 NNW N 4000. 1. 36E-06 6.74E-07 4.74E-07 2 .21E-07 7.37E-08 1. 93E-08 20.0 N NNE 4000. 1. 16E-06 5.35E-07 3.64E-07 1. 58E-07 4.74E-08 1. 09E-08 13.0 NNE NE 4000. 1. 15E-06 5.16E-07 3.45E-07 1.45E-07 4.14E-08 8. 98E-09 13.5 NE ENE 4000. 1. 06E-06 4.66E-07 3.09E-07 1.27E-07 3.54E-08 7. 42E-09 11.0 ENE E 4000. 1. 12E-06 5.28E-07 3.62E-07 1.59E-07 4.92E-08 1. 17E-08 14.0 E ESE 4000. 1. 05E-06 5. 11E-07 3.58E-07 1.64E-07 5.39E-08 1.38E-08 14.1 ESE SE 4000. 1. 23E-06 6. 14E-07 4.35E-07 2.05E-07 6.96E-08 1 .86E-08 15.9 SE SSE 4000. 1. 43E-06 7.27E-07 5.19E-07 2 .49E-07 8.70E-08 2. 40E-08 22.0 SSE MAX X/Q 1. 87E-06 TOTAL HOURS AROUND SITE: 689.6 SRP 2.3.4 4000. 1. 69E-06 8. 36E-07 5.88E-07 2.74E-07 9.17E-08 2.40E-08 SITE LIMIT 1. 69E-06 8. 36E-07 5.88E-07 2.74E-07 9. 17E-08 2 .40E-08 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 4000. 1.17E-05 SSW 4000. 1.17E-05 SW 4000. 1.17E-05 WSW 4000. 1.17E-05 W 4000. 1.17E-05 WNW 4000. 1.17E-05 NW 4000. 1.17E-05 NNW 4000. 1.17E-05 N 4000. 1.17E-05 NNE 4000. 1.17E-05 NE 4000. 1.17E-05 ENE 4000. 1.17E-05 E 4000. 1.17E-05 ESE 4000. 1.17E-05 Sheet 50 of 62

ATTACHMENT C SE 4000. 1.17E-05 SSE 4000. 1.17E-05

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Off-Gas Stack to Control Room Intake (5000 and 6000 m; Tower 2 Meteorologyv; RG 1.23, Revision 1 Wind Speed Categ~ories)

Peach Bottom Stack Release 97.5 meters 10.1-96.3 meters Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 11 1 2584. 54.3131.4 97.5 0 0 0 2 6 5 0

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 2. 10. 10. 15. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

5. 6. 10. 23. 59. 25. 2. 0. 0. 1. 2. 0. 0. 0. 0. 1.

1. 3. 11. 18. 43. 40. 10. 4. 2. 2. 2. 0. 1. 3. 0. 0.

0. 6. 10. 11. 13. 17. 9. 0. 7. 4. 3. 3. 2. 3. 0. 5.

0. 1. 2. 13. 8. 3. 9. 0. 4. 3. 0. 6. 13. 7. 3. 4.

2. 4. 9. 11. 2. 3. 7. 0. 6. 2. 2. 1. 14. 5. 2. 14.

1. 2. 0. 1. 0. 1. 0. 0. 0. 0. 0. 2. 10. 2. 0. 1.

1. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 1. 6. 5. 1. 1.

0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 1. 1. 9. 5. 0. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0.

1. 7. 5. 8. 21. 5. 1. 0. 0. 0. 0. 0. 1. 0. 1. 0.

12. 15. 9. 11. 34. 19. 6. 1. 1. 4. 3. 1. 3. 1. 2. 3.

1. 11. 11. 18. 6. 21. 11. 4. 4. 4. 4. 2. 3. 5. 1. 7.

2. 5. 4. 2. 5. 9. 13. 5. 17. 9. 6. 5. 13. 2. 1. 12.

3. 0. 3. 1. 3. 0. 9. 6. 14. 5. 6. 7. 10. 8. 3. 15.

8. 2. 1. 1. 0. 2. 5. 3. 22. 5. 3. 13. 21. 15. 6. 20.

1. 3. 0. 0. 0. 1. 1. 1. 6. 1. 1. 2. 11. 12. 5. 6.

0. 0. 1. 0. 0. 0. 0. 0. 1. 1. 0.. 1. 7. 10. 0. 0.

0. 2. 2. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 3. 10. 14. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

4. 7. 11. 16. 31. 17. 2. 0. 1. 0. 0. 0. 0. 0. 0. 1.

18. 14. 15. 17. 17. 40. 6. 4. 11. 4. 7. 3. 2. 2. 3. 16.

26. 12. 8. 11. 10. 21. 26. 13. 20. 13. 9. 4. 16. 6. 8. 35.

21. 6. 3. 8. 5. 11. 31. 10. 40. 14. 15. 14. 23. 13. 9. 45.

8. 8. 0. 3. 2. 3. 15. 12. 37. 17. 11. 15. 11. 21. 18. 43.

14. 2. 4. 2. 2. 3. 7. 5. 48. 18. 16. 24. 48. 45. 26. 74.

4. 1. 0. 0. 1. 2. 0. 1. 10. 0. 3. 3. 29. 27. 22. 14.

1. 3. 0. 0. 0. 0. 0. 0. 1. 0. 2. 2. 16. 33. 12. 4.

18. 18. 28. 26. 28. 20. 14. 13. 12. 6. 9. 6. 8. 19. 8. 10.

Sheet 51 of 62

ATTACHMENT C

41. 40. 80. 93. 87. 66. 31. 22. 29. 17. 23. 9. 18. 19. 28. 40.

67. 53. 78. 99. 130. 77. 54. 50. 39. 31. 28. 24. 30. 19. 40. 50.

209. 119. 120. 174. 227. 179. 192. 134. 171. 110. 98. 90. 89. 59. 118. 231.

216. 175. 125. 187. 215. 168. 282. 234. 320. 203. 128. 80. 109. 115. 186. 390.

237. 151. 118. 123. 134. 129. 212. 204. 330. 193. 142. 89. 134. 160. 235. 438.

233. 99. 80. 54. 103. 102. 129. 147. 274. 132. 80. 103. 142. 196. 332. 406.

278. 113. 52. 44. 87. 94. 107. 58. 345. 108. 91. 139. 311. 543. 821. 694.

69. 28. 13. 11. 24. 24. 15. 10. 96. 21. 15. 20. 211. 392. 489. 230.

25. 10. 10. 2. 18. 7. 8. 1. 40. 6. 5. 12. 124. 227. 256. 94.

21. 15. 15. 20. 24. 17. 26. 16. 26. 16. 17. 19. 30. 17. 23. 11.

39. 29. 21. 41. 36. 43. 35. 43. 44. 40. 42. 35. 24. 19. 16. 23.

50. 43. 35. 51. 65. 48. 90. 69. 60. 65. 63. 36. 42. 23. 30. 36.

137. 92. 91. 138. 168. 113. 186. 176. 263. 196. 164. 111. 102. 82. 112. 115.

177. 131. 95. 87. 123. 134. 205. 234. 432. 273. 191. 116. 120. 116. 154. 200.

180. 79. 69. 40. 68. 116. 152. 195. 423. 257. 165. 149. 193. 161. 255. 213.

102. 30. 25. 9. 37. 61. 88. 142. 284. 182. 99. 157. 213. 232. 277. 276.

110. 26. 17. 6. 39. 46. 69. 103. 367. 150. 159. 177. 417. 441. 493. 336.

24. 10. 3. 4. 11. 20. 16. 11. 72. 19. 27. 38. 88. 124. 101. 48.

8. 1. 6. 1. 21. 3. 9. 1. 9. 2. 2. 2. 10. 12. 10. 14.

16. 7. 13. 10. 11. 12. 10. 12. 12. 12. 15. 15. 14. 13. 13. 7.

10. 12. 9. 16. 20. 11. 18. 20. 11. 20. 17. 18. 16. 15. 13. 15.

26. 13. 14. 10. 13. 18. 27. 34. 33. 29. 27. 36. 22. 18. 18. 20.

53. 19. 18. 17. 15. 28. 43. 44. 75. 89. 99. 64. 43. 39. 60. 59.

62. 19. 7. 10. 14. 18. 37. 32. 89. 72. 105. 77. 88. 49. 69. 53.

29. 9. 6. 0. 5. 11. 18. 46. 46. 46. 66. 85. 85. 74. 87. 57.

12. 4. 3. 0. 0. 2. 7. 15. 40. 19. 31. 57. 85. 55. 67. 47.

2. 0. 0. 0. 0. 1. 4. 6. 24. 20. 23. 80. 128. 104. 61. 19.

0. 0. 0. 0. 0. 0. 0. 0. 1. 3. 1. 21. 23. 23. 0. 5.

1. 0. 0. 0. 4. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0.

7. 9. 6. 6. 8. 2. 1. 7. 8. 8. 1. 10. 8. 8. 7. 10.

4. 5. 5. 4. 5. 3. 3. 2. 9. 1. 5. 8. 5. 6. 6. 9.

4. 9. 5. 4. 5. 1. 11. 4. 8. 9. 6. 8. 7. 8. 11. 12.

35. 8. 15. 13. 7. 5. 12. 5. 22. 19. 22. 19. 25. 22. 44. 34.

17. 3. 5. 4. 3. 1. 8. 3. 6. 16. 36. 25. 28. 26. 53. 62.

7. 4. 1. 0. 0. 1. 4. 3. 8. 4. 16. 40. 27. 20. 41. 29.

0. 0. 0. 0. 0. 0. 2. 1. 1. 5. 10. 23. 37. 10. 17. 8.

1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 5. 14. 24. 32. 5. 4.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 1. 2. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 5000.5000.5000.5000.5000.5000.5000.5000.5000.5000.5000.5000.5000.5000.5000.5000.

6000.6000.6000.6000.6000.6000.6000.6000.6000.6000.6000.6000.6000.6000.6000.6000.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.0500.

0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.

Sheet 52 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Stack Release 3 97.5 meters 10.1-96.3 meters 4

5 Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T 11 42771 1 7 0.500 2584.000 54.300 131.400 97.500 8 0.000 0.000 0.000 2.000 6.000 5.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 2.000 10.000 10.000 15.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 5.000 6.000 10.000 23.000 59.000 25.000 2.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 1.000 9 1.000 3.000 11.000 18.000 43.000 40.000 10.000 4.000 2.000 2.000 2.000 0.000 1.000 3.000 0.000 0.000 9 0.000 6.000 10.000 11.000 13.000 17.000 9.000 0.000 7.000 4.000 3.000 3.000 2.000 3.000 0.000 5.000 9 0.000 1.000 2.000 13.000 8.000 3.000 9.000 0.000 4.000 3.000 0.000 6.000 13.000 7.000 3.000 4.000 9 2.000 4.000 9.000 11.000 2.000 3.000 7.000 0.000 6.000 2.000 2.000 1.000 14.000 5.000 2.000 14.000 9 1.000 2.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 2.000 10.000 2.000 0.000 1.000 9 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 6.000 5.000 1.000 1.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 1.000 1.000 9.000 5.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 7.000 5.000 8.000 21.000 5.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 9 12.000 15.000 9.000 11.000 34.000 19.000 6.000 1.000 1.000 4.000 3.000 1.000 3.000 1.000 2.000 3.000 9 1.000 11.000 11.000 18.000 6.000 21.000 11.000 4.000 4.000 4.000 4.000 2.000 3.000 5.000 1.000 7.000 9 2.000 5.000 4.000 2.000 5.000 9.000 13.000 5.000 17.000 9.000 6.000 5.000 13.000 2.000 1.000 12.000 9 3.000 0.000 3.000 1.000 3.000 0.000 9.000 6.000 14.000 5.000 6.000 7.000 10.000 8.000 3.000 15.000 9 8.000 2.000 1.000 1.000 0.000 2.000 5.000 3.000 22.000 5.000 3.000 13.000 21.000 15.000 6.000 20.000 9 1.000 3.000 0.000 0.000 0.000 1.000 1.000 1.000 6.000 1.000 1.000 2.000 11.000 12.000 5.000 6.000 9 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 7.000 10.000 0.000 0.000 9 0.000 2.000 2.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 3.000 10.000 14.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 4.000 7.000 11.000 16.000 31.000 17.000 2.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 9 18.000 14.000 15.000 17.000 17.000 40.000 6.000 4.000 11.000 4.000 7.000 3.000 2.000 2.000 3.000 16.000 9 26.000 12.000 8.000 11.000 10.000 21.000 26.000 13.000 20.000 13.000 9.000 4.000 16.000 6.000 8.000 35.000 9 21.000 6.000 3.000 8.000 5.000 11.000 31.000 10.000 40.000 14.000 15.000 14.000 23.000 13.000 9.000 45.000 9 8.000 8.000 0.000 3.000 2.000 3.000 15.000 12.000 37.000 17.000 11.000 15.000 11.000 21.000 18.000 43.000 9 14.000 2.000 4.000 2.000 2.000 3.000 7.000 5.000 48.000 18.000 16.000 24.000 48.000 45.000 26.000 74.000 9 4.000 1.000 0.000 0.000 1.000 2.000 0.000 1.000 10.000 0.000 3.000 3.000 29.000 27.000 22.000 14.000 9 1.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 2.000 2.000 16.000 33.000 12.000 4.000 9 18.000 18.000 28.000 26.000 28.000 20.000 14.000 13.000 12.000 6.000 9.000 6.000 8.000 19.000 8.000 10.000 9 41.000 40.000 80.000 93.000 87.000 66.000 31.000 22.000 29.000 17.000 23.000 9.000 18.000 19.000 28.000 40.000 9 67.000 53.000 78.000 99.000130.000 77.000 54.000 50.000 39.000 31.000 28.000 24.000 30.000 19.000 40.000 50.000 9 209.000119.000120.000174.000227.000179.000192.000134.000171.000110.000 98.000 90.000 89.000 59.000118.000231.000 9 216 .000175.000125.000187.000215.000168.000282.000234.000320.000203 .0001 28.000 80.000109.000115.000186.000390.000 9 237.000151.000118.000123.000134.000129.000212.000204.000330.000193.0001 .42.000 89.000134.000160.000235.000438.000 9 233.000 99.000 80.000 54.000103.000102.000129.000147.000274.000132.000 80.000103.000142.000196.000332.000406.000 9 278.000113.000 52.000 44.000 87.000 94.000107.000 58.000345.000108.000 91.000139.000311.000543.000821.000694.000 9 69.000 28.000 13.000 11.000 24.000 24.000 15.000 10.000 96.000 21.000 15.000 20.000211.000392.000489.000230.000 9 25.000 10.000 10.000 2.000 18.000 7.000 8.000 1.000 40.000 6.000 5.000 12.000124.000227.000256.000 94.000 Sheet 53 of 62

ATTACHMENT C 9 21.000 15.000 15.000 20.000 24.000 17.000 26.000 16.000 26.000 16.000 17.000 19.000 30.000 17.000 23.000 11.000 9 39.000 29.000 21.000 41.000 36.000 43.000 35.000 43.000 44.000 40.000 42.000 35.000 24.000 19.000 16.000 23.000 9 50.000 43.000 35.000 51.000 65.000 48.000 90.000 69.000 60.000 65.000 63.000 36.000 42.000 23.000 30.000 36.000 9 137.000 92.000 91.000138.000168.000113.000186.000176.000263.000196.000164.000111.000102.000 82.000112.000115.000 9 177.000131.000 95.000 87.000123.000134.000205.000234.000432.000273.000191.000116. 000120.000116.000154.000200.000 9 180.000 79.000 69.000 40.000 68.000116.000152.000195.000423.000257.000165.000149.000193.000161.000255.000213.000 9 102.000 30.000 25.000 9.000 37.000 61.000 88.000142.000284.000182.000 99.000157.000213.000232.000277.000276.000 9 110.000 26.000 17.000 6.000 39.000 46.000 69.000103.000367.000150.000159.000177.000417.000441.000493.000336.000 9 24.000 10.000 3.000 4.000 11.000 20.000 16.000 11.000 72.000 19.000 27.000 38.000 88.000124.000101.000 48.000 9 8.000 1.000 6.000 1.000 21.000 3.000 9.000 1.000 9.000 2.000 2.000 2.000 10.000 12.000 10.000 14.000 9 16.000 7.000 13.000 10.000 11.000 12.000 10.000 12.000 12.000 12.000 15.000 15.000 14.000 13.000 13.000 7.000 9 10.000 12.000 9.000 16.000 20.000 11.000 18.000 20.000 11.000 20.000 17.000 18.000 16.000 15.000 13.000 15.000 9 26.000 13.000 14.000 10.000 13.000 18.000 27.000 34.000 33.000 29.000 27.000 36.000 22.000 18.000 18.000 20.000 9 53.000 19.000 18.000 17.000 15.000 28.000 43.000 44.000 75.000 89.000 99.000 64.000 43.000 39.000 60.000 59.000 9 62.000 19.000 7.000 10.000 14.000 18.000 37.000 32.000 89.000 72.000105.000 77.000 88.000 49.000 69.000 53.000 9 29.000 9.000 6.000 0.000 5.000 11.000 18.000 46.000 46.000 46.000 66.000 85.000 85.000 74.000 87.000 57.000 9 12.000 4.000 3.000 0.000 0.000 2.000 7.000 15.000 40.000 19.000 31.000 57.000 85.000 55.000 67.000 47.000 9 2.000 0.000 0.000 0.000 0.000 1.000 4.000 6.000 24.000 20.000 23.000 80.000128.000104.000 61.000 19.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3 .000 1.000 21.000 23.000 23.000 0.000 5.000 9 1.000 0.000 0.000 0.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 0.000 0.000 9 7.000 9.000 6.000 6.000 8.000 2.000 1.000 7.000 8.000 8.000 1.000 10.000 8.000 8.000 7.000 10.000 9 4.000 5.000 5.000 4.000 5.000 3.000 3.000 2.000 9.000 1.000 5.000 8.000 5.000 6.000 6.000 9.000 9 4.000 9.000 5.000 4.000 5.000 1.000 11.000 4.000 8.000 9.000 6.000 8.000 7.000 8.000 11.000 12.000 9 35.000 8.000 15.000 13.000 7.000 5.000 12.000 5.000 22.000 19.000 22.000 19.000 25.000 22.000 44.000 34.000 9 17.000 3.000 5.000 4.000 3.000 1.000 8.000 3.000 6.000 16.000 36.000 25.000 28.000 26.000 53.000 62.000 9 7.000 4.000 1.000 0.000 0.000 1.000 4.000 3.000 8.000 4.000 16.000 40.000 27.000 20.000 41.000 29.000 9 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 5.000 10.000 23.000 37.000 10.000 17.000 8.000 9 1.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 5.000 14.000 24.000 32.000 5.000 4.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 1.000 2.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 5000. 5000. 5000. 5000. 5000. 5000.

5000. 5000. 5000. 5000. 5000. 5000. 5000. 5000. 5000. 5000. 11 6000. 6000. 6000. 6000. 6000. 6000. 6000. 6000. 6000.

6000. 6000. 6000. 6000. 6000. 6000. 6000. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 13 500. 500.

500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500. 500.

14 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Sheet 54 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 5000. 1.49E-06 7. 06E-07 4. 86E-07 2.16E-07 6. 77E-08 1.63E-08 25.5 S SSW 5000. 1.33E-06 6. 04E-07 4. 07E-07 1.73E-07 5. 03E-08 1.11E-08 348.2 SSW SW 5000. 1.64E-06 7.26E-07 4. 83E-07 2. OOE-07 5.63E-08 1.20E-08 33.9 SW WSW 5000. 1. 77E-06 8. 01E-07 5.38E-07 2. 27E-07 6. 58E-08 1 .45E-08 39.0 WSW W 5000. 1. 86E-06 8.58E-07 5. 83E-07 2. 52E-07 7.56E-08 1. 73E-08 43.7 W WNW 5000. 1, 56E-06 7. 15E-07 4. 84E-07 2. 07E-07 6. 14E-08 1. 39E-08 29.2 WNW NW 5000. 1.41E-06 6. 63E-07 4. 54E-07 2.OOE-07 6. 15E-08 1. 45E-08 22.2 NW NNW 5000. 1.28E-06 5. 93E-07 4. 04E-07 1.76E-07 5.32E-08 1. 23E-08 17.7 NNW N 5000. 1.36E-06 6 .75E-07 4. 76E-07 2. 23E-07 7. 53E-08 1.99E-08 20.0 N NNE 5000. 1.15E-06 5.3 8E-07 3. 68E-07 1.61E-07 4. 92E-08 1. 15E-08 13.0 NNE NE 5000. 1.15E-06 5.19E-07 3. 49E-07 1.48E-07 4.29E-08 9. 45E-09 13.5 NE ENE 5000. 1. 05E-06 4.69E-07 3 .12E-07 1.30E-07 3. 66E-08 7. 81E-09 11.0 ENE E 5000. 1. 12E-06 5. 28E-07 3 . 63E-07 1.61E-07 5. OOE-08 1. 20E-08 14.0 E ESE 5000. 1.04E-06 5. 1OE-07 3. 57E-07 1.65E-07 5. 43E-08 1. 40E-08 14.1 ESE SE 5000. 1.23E-06 6.16E-07 4. 37E-07 2. 07E-07 7. 05E-08 1. 89E-08 15.9 SE SSE 5000. 1.42E-06 7.23E-07 5. 15E-07 2.47E-07 8. 62E-08 2. 37E-08 22.0 SSE MAX X/Q 1. 86E-06 TOTAL HOURS AROUND SITE 683.2 SRP 2.3.4 5000. 1.67E-06 8.28E-07 5.83E-07 2. 72E-07 9. 07E-08 2.37E-08 SITE LIMIT 1.67E-06 8 .28E-07 5.83E-07 2. 72E-07 9. 07E-08 2.37E-08 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 5000. 9.60E-06 SSW 5000. 9.60E-06 SW 5000. 9.60E-06 WSW 5000. 9.60E-06 W 5000. 9.60E-06 WNW 5000. 9.60E-06 NW 5000. 9.60E-06 NNW 5000. 9.60E-06 N 5000. 9.60E-06 NNE 5000. 9.60E-06 NE 5000. 9.60E-06 ENE 5000. 9.60E-06 E 5000. 9.60E-06 ESE 5000. 9.60E-06 Sheet 55 of 62

ATTACHMENT C SE 5000. 9.60E-06 SSE 5000. 9.60E-06

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 56 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 04/20/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 97.5 meters TYPE OF RELEASE: Stack Release DELTA-T HEIGHTS: 10.1-96.3 meters SOURCE OF DATA:

COMMENTS: Peach Bottom, Tower 2 1984-1988 met data, 320 ft wind,33-316 ft Delta T PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 6000. 1.40E-06 6. 66E-07 4. 59E-07 2. 05E-07 6.44E-08 1.56E-08 25.5 S SSW 6000. 1.24E-06 5. 65E-07 3. 81E-07 1. 62E-07 4.74E-08 1.06E-08 384.5 SSW SW 6000. 1.53E-06 6. 78E-07 4. 52E-07 1.87E-07 5.28E-08 1.12E-08 33.6 SW WSW 6000. 1.66E-06 7. 51E-07 5. 05E-07 2. 13E-07 6.17E-08 1.35E-08 38.9 WSW W 6000. 1.75E-06 8. 06E-07 5. 48E-07 2. 37E-07 7.10E-08 1. 63E-08 43.7 W WNW 6000. 1.47E-06 6. 72E-07 4. 55E-07 1. 95E-07 5.78E-08 1.31E-08 29.2 WNW NW 6000. 1.33E-06 6.26E-07 4. 30E-07 1. 90E-07 5.89E-08 1.41E-08 22.2 NW NNW 6000. 1.20E-06 5. 62E-07 3. 84E-07 1. 68E-07 5.15E-08 1.21E-08 17.7 NNW N 6000. 1.27E-06 6.39E-07 4. 52E-07 2. 14E-07 7.29E-08 1. 95E-08 20.0 N NNE 6000. 1.11E-06 5. 20E-07 3. 56E-07 1. 57E-07 4.84E-08 1.15E-08 13.6 NNE NE 6000. 1. 08E-06 4.92E-07 3. 33E-07 1.42E-07 4.19E-08 9.40E-09 13.5 NE ENE 6000. 1.OOE-06 4.49E-07 3. 01E-07 1.26E-07 3.59E-08 7.77E-09 11.5 ENE E 6000. 1. 08E-06 5. 1OE-07 3. 51E-07 1.56E-07 4.86E-08 1.17E-08 14.1 E ESE 6000. 9. 78E-07 4.81E-07 3 38E-07 1. 57E-07 5.19E-08 1.35E-08 14.1 ESE SE 6000. 1.18E-06 5.91E-07 4. 19E-07 1. 98E-07 6.79E-08 1. 83E-08 16.0 SE SSE 6000. 1.34E-06 6.80E-07 4. 85E-07 2.33E-07 8.12E-08 2. 24E-08 22.0 SSE MAX X/Q 1.75E-06 TOTAL HOURS AROUND SITE: 720.4 SRP 2.3.4 6000. 1. 65E-06 8. 09E-07 5.67E-07 2. 62E-07 8. 67E-08 2. 24E-08 SITE LIMIT 1. 65E-06 8. 09E-07 5.67E-07 2. 62E-07 8.67E-08 2. 24E-08 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

X/Q VALUES (SEC/CUBIC METER) FOR FUMIGATION AT THE BOUNDARY:

DOWNWIND DISTANCE FUMIGATION SECTOR (METERS) X/Q S 6000. 8.14E-06 SSW 6000. 8.14E-06 SW 6000. 8.14E-06 WSW 6000. 8.14E-06 W 6000. 8.14E-06 WNW 6000. 8.14E-06 NW 6000. 8.14E-06 NNW 6000. 8.14E-06 N 6000. 8.14E-06 NNE 6000. 8.14E-06 NE 6000. 8.14E-06 ENE 6000. 8.14E-06 E 6000. 8.14E-06 ESE 6000. 8.14E-06 Sheet 57 of 62

ATTACHMENT C SE 6000. 8.14E-06 SSE 6000. 8.14E-06

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY.

CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Units 2 and 3 Reactor Building Stacks. Reactor Building Personnel Access Doors, Railway Bay Doors, Roof Scuttle, and Ground-Level Hatch to EAB (River Tower/Tower 1A Meteorology; RG 1.23, Revision 1 Wind Speed Categories) 1 i111 Peach Bottom Ground Release 13.7 meters 10.4-21.1 meters PB, 84-88, RG 1.23 Ri wnd cats, 1A met (w/ RT 45' wnd), RB Stack to EAB 11 0 2584. 54.3 10.0 13.7 0 0 1 1 4 4 4

48. 50. 50. 45. 40. 42. 35. 23. 28. 17. 14. 25. 18. 22. 18. 33.

41. 33. 31. 44. 82. 90. 88. 27. 30. 14. 15. 8. 19. 20. 14. 38.

42. 26. 26. 32. 88. 99. 88. 58. 18. 8. 4. 0. 9. 17. 24. 36.

78. 51. 47. 63. 92. 184. 249. 79. 39. 15. 9. 9. 14. 12. 105. 89.

112. 45. 26. 31. 58. 83. 240. 112. 64. 22. 13. 12. 19. 18. 146. 153.

103. 19. 17. 7. 22. 26. 121. 131. 77. 19. 23. 20. 27. 39. 151. 189.

90. 11. 2. 8. 3. 10. 27. 135. 50. 9. 1. 4. 21. 29. 160. 217.

78. 11. 4. 1. 1. 9. 10. 103. 44. 7. 0. 1. 22. 76. 267. 348.

24. 1. 1. 0. 0. 2. 0. 11. 0. 1. 0. 0. 0. 26. 131. 105.

5. 0. 0. 0. 0. 0. 0. 2. 0. 0. 0. 0. 0. 11. 72. 43.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

16. 17. 18. 7. 14. 17. 19. 8. 7. 3. 3. 6. 7. 6. 11. 10.

19. 16. 15. 22. 22. 27. 29. 11. 6. 1. 2. 4. 3. 7. 13. 21.

15. 10. 10. 30. 44. 30. 26. 8. 5. 1. 3. 4. 2. 8. 13. 22.

40. 18. 25. 29. 62. 73. 86. 39. 16. 14. 10. 9. 13. 12. 60. 42.

47. 28. 30. 14. 28. 51. 70. 41. 22. 9. 19. 12. 26. 21. 54. 48.

45. 10. 9. 5. 20. 41. 48. 41. 31. 10. 23. 17. 32. 51. 71. 73.

42. 9. 5. 1. 6. 13. 20. 48. 18. 2. 6. 5. 20. 44. 81. 66.

34. 0. 3. 1. 0. 10. 8. 26. 7. 3. 3. 4. 16. 112. 172. 128.

5. 0. 1. 0. 0. 2. 3. 7. 0. 1. 0. 1. 1. 55. 68. 47.

0. 0. 0. 0. 0. 0. 0. 2. 0. 0. 0. 0. 0. 15. 51. 26.

58. 32. 23. 45. 46. 55. 42. 25. 16. 9. 15. 13. 17. 15. 30. 42.

34. 30. 47. 36. 46. 39. 62. 24. 18. 8. 10. 15. 16. 25. 31. 28.

Sheet 58 of 62

ATTACHMENT C

27. 30. 63. 55. 73. 71. 94. 32. 23. 17. 17. 19. 16. 36. 58. 43.

110. 60. 83. 93. 119. 162. 213. 98. 74. 39. 37. 48. 67. 68. 122. 90.

120. 53. 42. 39. 80. 125. 219. 146. 75. 39. 39. 70. 95. 105. 181. 120.

93. 32. 18. 21. 58. 89. 97. 197. 60. 17. 36. 27. 87. 161. 234. 126.

60. 21. 7. 6. 17. 48. 45. 112. 47. 15. 22. 10. 55. 229. 219. 152.

45. 14. 4. 1. 13. 29. 32. 99. 23. 7. 5. 6. 64. 432. 422. 237.

7. 2. 0. 0. 3. 4. 6. 41. 1. 0. 0. 0. 6. 124. 259. 111.

3. 1. 0. 0. 0. 0. 1. 4. 0. 0. 0. 0. 1. 31. 107. 43.

65. 28. 29. 24. 36. 50. 69. 44. 27. 27. 27. 29. 32. 29. 48. 78.

40. 32. 16. 32. 28. 59. 86. 36. 10. 18. 34. 20. 33. 33. 34. 83.

38. 25. 30. 35. 34. 68. 127. 45. 48. 30. 35. 25. 45. 35. 56. 59.

87. 27. 35. 50. 47. 90. 171. 127. 87. 16. 43. 53. 73. 81. 148. 71.

97. 21. 18. 22. 36. 80. 143. 160. 72. 23. 23. 30. 63. 131. 164. 70.

71. 25. 12. 8. 19. 49. 84. 158. 40. 4. 18. 6. 22. 134. 192. 90.

39. 7. 4. 1. 9. 13. 16. 90. 13. 2. 3. 1. 11. 120. 137. 74.

29. 1. 0. 2. 14. 20. 18. 68. 9. 1. 1. 1. 2. 87. 150. 70.

2. 0. 0. 0. 7. 0. 0. 25. 6. 0. 0. 0. 0. 10. 44. 20.

0. 0. 0. 0. 0. 2. 1. 1. 0. 0. 0. 0. 0. 10. 6. 3.

64. 37. 30. 19. 36. 63. 88. 71. 53. 21. 33. 28. 61. 54. 103. 102.

27. 15. 18. 23. 24. 33. 80. 48. 46. 30. 42. 60. 60. 45. 70. 74.

29. 14. 15. 6. 22. 37. 93. 73. 44. 21. 28. 41. 65. 45. 67. 58.

53. 14. 17. 11. 17. 52. 111. 135. 73. 17. 21. 33. 53. 105. 119. 69.

28. 4. ii. 8. 4. 30. 70. 127. 44. 15. 8. 15. 25. 81. 128. 60.

14. 1. 1. 1. 4. 11. 20. 85. 26. 5. 0. 4. 5. 74. 104. 46.

2. 0. 0. 1. 1. 0. 1. 19. 9. 0. 0. 0. 2. 28. 45. 19.

0. 0. 0. 1. 10. 0. 0. 10. 3. 0. 0. 0. 0. 5. 7. 9.

0. 0. 0. 0. 3. 0. 0. 0. 0. 0. 0. 0. 1. 0. 0. 2.

0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 2. 0.

99. 41. 38. 36. 46. 74. 121. 147. 179. 127. 221. 290. 403. 351. 423. 265.

95. 37. 25. 45. 43. 59. 147. 167. 178. 146. 223. 304. 520. 448. 491. 325.

57. 21. 27. 7. 27. 52. 151. 137. 121. 82. 122. 218. 443. 286. 303. 218.

63. 22. 9. 4. 20. 54. 147. 160. 102. 53. 78. 125. 315. 264. 346. 209.

49. 6. 4. 2. 1. 28. 32. 63. 29. 10. 6. 16. 90. 142. 191. 78.

10. 1. 1. 0. 0. 4. 5. 12. 12. 3. 0. 1. 6. 81. 90. 17.

1. 1. 2. 0. 0. 0. 0. 6. 4.. 0. 0. 2. 0. 16. 21. 10.

0. 0. 0. 0. 0. 0. 0. 7. 3. 0. 0. 0. 0. 3. 6. 4.

0. 0. 0. 0. 0. 0. 0. 1. 2. 0. 0. 0. 0. 0. 0. 0.

0. 0. 0. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 0. 0. 0.

101. 0.50 2.35 3.47 4.59 6.82 9.06 11.313.5318.0122.37 55.0 0823 .0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.0823.

-100.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.7300.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.

Sheet 59 of 62

ATTACHMENT C Copyright (c) 1990 Ergo Computing, Inc. for Lahey USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 05/09/08 PRINTOUT OF INPUT CARDS 1 00010 01111 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Peach Bottom Ground Release 3 13.7 meters 10.4-21.1 meters 4

5 PB, 84-88, RO 1.23 Ri wnd cats, 1A met (w/ RT 45' wnd), RB Stack to EAB 6 11 42043 0 0.500 2584.000 54.300 10.000 13.700 0.000 0.000 1.000 1.000 4.000 4.000 4.000 48.000 50.000 50.000 45. 000 40.000 42.000 35.000 23 .000 28.000 17.000 14.000 25.000 18.000 22.000 18.000 33.000 41.000 33.000 31.000 44.000 82.000 90.000 88.000 27.000 30.000 14.000 15.000 8.000 19.000 20.000 14.000 38.000 42.000 26.000 26.000 32.000 88.000 99.000 88.000 58.000 18.000 8.000 4.000 0.000 9.000 17.000 24.000 36.000 78.000 51.000 47.000 63 .000 92.000184.000249.000 79.000 39.000 15.000 9.000 9.000 14.000 12.000105.000 89.000 112.000 45.000 26.000 31.000 58.000 83.000240.000112.000 64.000 22.000 13.000 12.000 19.000 18.000146.000153.000 103 .000 19.000 17.000 7.000 22.000 26.000121.000131.000 77.000 19.000 23.000 20.000 27.000 39.000151.000189.000

90. 000 11.000 2.000 8.000 3.000 10.000 27.000135.000 50.000 9.000 1.000 4.000 21.000 29.000160.000217.000 78.000 11.000 4.000 1.000 1.000 9.000 10.000103.000 44.000 7.000 0.000 1.000 22.000 76.000267.000348.000 24.000 1.000 1.000 0.000 0.000 2.000 0.000 11.000 0.000 1.000 0.000 0.000 0.000 26.000131.000105.000 5.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 11.000 72.000 43.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 16.000 17.000 18.000 7.000 14.000 17.000 19.000 8.000 7.000 3.000 3.000 6.000 7.000 6.000 11.000 10.000 19.000 16.000 15.000 22.000 22.000 27.000 29.000 11.000 6.000 1.000 2.000 4.000 3.000 7.000 13.000 21.000 15.000 10.000 10.000 30.000 44.000 30.000 26.000 8.000 5.000 1.000 3.000 4.000 2.000 8.000 13.000 22.000 40.000 18.000 25.000 29.000 62.000 73 .000 86.000 39.000 16.000 14.000 10.000 9.000 13.000 12.000 60.000 42.000 47.000 28.000 30.000 14.000 28.000 51.000 70.000 41.000 22.000 9.000 19.000 12.000 26.000 21.000 54.000 48.000 45.000 10.000 9.000 5.000 20.000 41.000 48.000 41.000 31.000 10.000 23.000 17.000 32.000 51.000 71.000 73.000 42.000 9.000 5.000 1.000 6.000 13.000 20.000 48.000 18.000 2.000 6.000 5.000 20.000 44.000 81.000 66.000 34.000 0.000 3.000 1.000 0.000 10.000 8.000 26.000 7.000 3.000 3.000 4.000 16.000112.000172.000128.000 5.000 0.000 1.000 0.000 0.000 2.000 3.000 7.000 0.000 1.000 0.000 1.000 1.000 55.000 68.000 47.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 15.000 51.000 26.000 58.000 32.000 23.000 45.000 46.000 55.000 42.000 25.000 16.000 9.000 15.000 13.000 17.000 15.000 30.000 42.000 34.000 30.000 47.000 36.000 46.000 39.000 62.000 24.000 18.000 8.000 10.000 15.000 16.000 25.000 31.000 28.000 27.000 30.000 63.000 55.000 73.000 71.000 94.000 32.000 23.000 17.000 17.000 19.000 16.000 36.000 58.000 43.000 110.000 60.000 83.000 93.000119.000162.000213 .000 98.000 74.000 39.000 37.000 48.000 67.000 68.000122.000 90.000 120.000 53 .000 42.000 39.000 80.000125.000219.000146.000 75.000 39.000 39.000 70.000 95.000105.000181.000120.000 93.000 32.000 18.000 21.000 58.000 89.000 97.000197.000 60.000 17.000 36.000 27.000 87.000161.000234.000126.000 60.000 21.000 7.000 6.000 17.000 48.000 45.000112.000 47.000 15.000 22.000 10.000 55.000229.000219.000152.000 45.000 14.000 4.000 1.000 13.000 29.000 32.000 99.000 23.000 7.000 5.000 6.000 64.000432.000422.000237.000 7.000 2.000 0.000 0.000 3.000 4.000 6.000 41.000 1.000 0.000 0.000 0.000 6.000124.000259.000111.000 Sheet 60 of 62

ATTACHMENT C 9 3.000 1.000 0.000 0.000 0.000 0.000 1.000 4.000 0.000 0.000 0.000 0.000 1.000 31.000107.000 43.000 9 65.000 28.000 29.000 24.000 36.000 50.000 69.000 44.000 27.000 27.000 27.000 29.000 32.000 29.000 48.000 78.000 9 40.000 32.000 16.000 32.000 28.000 59.000 86.000 36.000 10.000 18.000 34.000 20.000 33.000 33.000 34.000 83.000 9 38.000 25.000 30.000 35.000 34.000 68.000127.000 45.000 48.000 30.000 35.000 25.000 45.000 35.000 56.000 59.000 9 87.000 27.000 35.000 50.000 47.000 90.000171.000127.000 87.000 16.000 43.000 53.000 73.000 81.000148.000 71.000 9 97.000 21.000 18.000 22.000 36.000 80.000143.000160.000 72.000 23.000 23.000 30.000 63.000131.000164.000 70.000 9 71.000 25.000 12.000 8.000 19.000 49.000 84.000158.000 40.000 4.000 18.000 6.000 22.000134.000192.000 90.000 9 39.000 7.000 4.000 1.000 9.000 13 .000 16.000 90.000 13.000 2.000 3.000 1.000 11.000120.000137.000 74.000 9 29.000 1.000 0.000 2.000 14.000 20.000 18.000 68.000 9.000 1.000 1.000 1.000 2.000 87.000150.000 70.000 9 2.000 0.000 0.000 0.000 7.000 0.000 0.000 25.000 6.000 0.000 0.000 0.000 0.000 10.000 44.000 20.000 9 0.000 0.000 0.000 0.000 0.000 2.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 10.000 6.000 3.000 9 64.000 37.000 30.000 19.000 36.000 63.000 88.000 71.000 53.000 21.000 33.000 28.000 61.000 54.000103.000102.000 9 27.000 15.000 18.000 23.000 24.000 33.000 80.000 48.000 46.000 30.000 42.000 60.000 60.000 45.000 70.000 74.000 9 29.000 14.000 15.000 6.000 22.000 37.000 93.000 73.000 44.000 21.000 28.000 41.000 65.000 45.000 67.000 58.000 9 53.000 14.000 17.000 11.000 17.000 52.000111.000135.000 73.000 17.000 21.000 33.000 53.000105.000119.000 69.000 9 28.000 4.000 11.000 8.000 4.000 30.000 70.000127.000 44.000 15.000 8.000 15.000 25.000 81.000128.000 60.000 9 14.000 1.000 1.000 1.000 4.000 11.000 20.000 85.000 26.000 5.000 0.000 4.000 5.000 74.000104.000 46.000 9 2.000 0.000 0.000 1.000 1.000 0.000 1.000 19.000 9.000 0.000 0.000 0.000 2.000 28.000 45.000 19.000 9 0.000 0.000 0.000 1.000 10.000 0.000 0.000 10.000 3.000 0.000 0.000 0.000 0.000 5.000 7.000 9.000 9 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 2.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 0.000 9 99,000 41.000 38.000 36.000 46.000 74.000121.000147.000179.000127.000221.000290.000403.000351.000423.000265.000 9 95.000 37.000 25.000 45.000 43.000 59.000147.000167.000178.000146.000223.000304.000520.000448.000491.000325.000 9 57.000 21.000 27.000 7.000 27.000 52.000151.000137.000121.000 82.000122.000218.000443.000286.000303.000218.000 9 63.000 22.000 9.000 4.000 20.000 54.000147.000160.000102.000 53.000 78.000125.000315.000264.000346.000209.000 9 49.000 6.000 4.000 2.000 1.000 28.000 32.000 63.000 29.000 10.000 6.000 16.000 90.000142.000191.000 78.000 9 10.000 1.000 1.000 0.000 0.000 4.000 5.000 12.000 12.000 3.000 0.000 1.000 6.000 81.000 90.000 17.000 9 1.000 1.000 2.000 0.000 0.000 0.000 0.000 6.000 4.000 0.000 0.000 2.000 0.000 16.000 21.000 10.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 7.000 3.000 0.000 0.000 0.000 0.000 3.000 6.000 4.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 2.350 3.470 4.590 6.820 9.060 11.300 13.530 18.010 22.370 55.000 0.000 0.000 0.000 11 823. 823. 823. 823. 823. 823.

823. 823. 823. 823. 823. 823. 823. 823. 823. 823. 11 -100. 7300. 7300. 7300. 7300. 7300. 7300.. 7300. 7300. 7300.

7300. 7300. 7300. 7300. 7300. 7300. 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 12 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Sheet 61 of 62

ATTACHMENT C USNRC COMPUTER CODE-PAVAN, VERSION 2.0 RUN DATE: 05/09/08 PLANT NAME: Peach Bottom METEOROLOGICAL INSTRUMENTATION DATA PERIOD: WIND SENSORS HEIGHT: 13.7 meters TYPE OF RELEASE: Ground Release DELTA-T HEIGHTS: 10.4-21.1 meters SOURCE OF DATA:

COMMENTS: PB, 84-88, RG 1.23 Rl wnd cats, lA met (w/ RT 45' wnd), RB Stack to EAB PROGRAM: PAVAN, 10/76, 8/79 REVISION, IMPLEMENTATION OF REGULATORY GUIDE 1.145 RELATIVE CONCENTRATION (X/Q) VALUES (SEC/CUBIC METER)

VERSUS HOURS PER YEAR MAX AVERAGING TIME 0-2 HR X/Q IS DOWNWIND DISTANCE EXCEEDED DOWNWIND SECTOR (METERS) 0-2 HOURS 0-8 HOURS 8-24 HOURS 1-4 DAYS 4-30 DAYS ANNUAL AVERAGE IN SECTOR SECTOR S 823. 2. 67E-04 1. 29E-04 8.99E-05 4.10E-05 1. 33E-05 3 .34E-06 10.0 S SSW 823. 1. 44E-04 6. 79E-05 4.65E-05 2.05E-05 6 .33E-06 1. 50E-06 319.8 SSW SW 823. 1.25E-04 5. 95E-05 4.11E-05 1.84E-05 5. 79E-06 1.41E-06 3.8 SW WSW 823. 1.16E-04 5. 58E-05 3.87E-05 1.76E-05 5. 63E-06 1.40E-06 3.6 WSW W 823. 1. 57E-04 7. 59E-05 5.27E-05 2.39E-05 7. 68E-06 1.91E-06 4.6 W WNW 823. 2.35E-04 1.14E-04 7.98E-05 3.66E-05 1. 19E-05 3.03E-06 7.4 WNW NW 823. 3. 00E-04 1.53E-04 1.10E-04 5. 30E-05 1. 86E-05 5.19E-06 12.2 NW NNW 823. 3 .19E-04 1. 60E-04 1.14E-04 5. 37E-05 1. 84E-05 4.94E-06 14.9 NNW N 823. 3 .39E-04 1.63E-04 1.13E-04 5. 13E-05 1. 64E-05 4. 08E-06 18.1 N NNE 823. 2.88E-04 1. 32E-04 8.95E-05 3.85E-05 1. 14E-05 2.60E-06 12.8 NNE NE 823. 3 .72E-04 1.76E-04 1.21E-04 5. 38E-05 1. 68E-05 4.03E-06 22.5 NE ENE 823. 4.03E-04 1.97E-04 1.38E-04 6.37E-05 2. 09E-05 5.37E-06 29.7 ENE E 823. 4.45E-04 2.32E-04 1.68E-04 8. 30E-05 3. 02E-05 8. 76E-06 41.6 E ESE 823. 4.27E-04 2.22E-04 1.60E-04 7.89E-05 2.85E-05 8. 21E-06 36.1 ESE SE 823. 4. 51E-04 2.42E-04 1.77E-04 8. 97E-05 3 39E-05 1.03E-05 43.7 SE SSE 823. 3.93E-04 2. 03E-04 1.46E-04 7.09E-05 2. 53E-05 7.16E-06 27.1 SSE MAX X/Q 4. 51E-04 TOTAL HOURS AROUND SITE: 607.7 SRP 2.3.4 823. 7.98E-04 3.89E-04 2.71E-04 1. 24E-04 4.06E-05 1. 03E-05 SITE LIMIT 4.08E-04 2.22E-04 1.64E-04 8.47E-05 3.28E-05 1.03E-05 THE FIVE-PERCENT-FOR-THE-ENTIRE-SITE X/Q IS LIMITING.

• • NOTE**: VALUES ON THIS PAGE ARE APPROXIMATIONS ONLY CHECK THE REASONABLENESS OF THE ENVELOPES COMPUTED FOR THE 0-2 HOUR VALUES. FOR ANY FAULTY ENVELOPES, ADJUST THE ABOVE VALUES.

Sheet 62 of 62

ATTACHMENT D Peach Bottom Joint Frequency Distribution 1984-1988 Towe, 2 33 wlnd 150'-33' Delta T NW I NNW Coin, ToUI SW I WSW I W I WNW r r r I ssE F S r SSW I T r r t

..... Pea ENE ESE I SE Category(I)1 N NNE I NE I CntogoVl1l N NNE I NE I ENE E ESE I SE I SSE S SSW SW I WSW I WN WNW I NW I NNW Calm Total Cat...t Wind SPOal(m~ph) 1 (Coilm) <

2 5 to <3.5 3 >=35 to <7+5 4 7+5to-12.5 5 >=12.5to<18.5 6 >=18.5 to'24 7 -24 Sheet 1 of 1

Calculation PM-1058, Revision 1 Design Analysis Major Revision Cover Sheet Design Analysis (Major Revision) I Last Page No. 1 .

Analysis No.:

• PM-1058 Revision: ' I

Title:

I Reanalysis of Main Steam Line Break (MSLB) Accident Using Alternate Source Terms ECVECR No.:, PB 07-00027 Revision: ' I Station($): ~ Peach Bottom AtomicCopnts)

Power Station Component(s):

Unit No.:' 2 and 3 N/A Discipline: SEAQ Descrlp. Code/Keyword: MSLB Safety/QA Class: S System Code: '1 912 Structure: ' N/A CONTROLLED DOCUMENT REFERENCES Document No.: From/To Document No.: Fron/To CaIc. PM-740, rev. IA From UFSAR; Section 14.6.5, rev 18 From / To Caic. PM-738. Rev A From I. I I Is this Design Analysis Safeguards Information? " Yes [] No 0 If yes, see SY-AA.101-106 Does this Design Analysis contain Unverified Assumptions? " Yes [] No g It yes, AT1IAR#:

This Design Analysis SUPERCEDES: " Analysis No. PM-1058, Revision 0 In its entirety.

Description of Revision (list affected pages for partials): "

Minor Correction in EAB Atmospheric Dispersion coefficient incorporated, resulting in a minor change to the resulting EAB dose results.

Preparer: so Harold Rothstein I~r~I~-

Pf~ntNAffe cam '

Method of Review:"1 Detailed Review 0 Alternate C,7Testingi](

Reviewer:" Paul Reichert 51 PR"n0Name Sl"n Na Doe Review Notes: ' Independent review 0 Peer review 0

!FeE*ernal aly"ls ONy Externa~lnApprover: ~r ~__ _________ J'/I/OL Exelon Reviewer: * .j/'____4 Independent 3 rd Party Review Reqd?" YesE No iýr-. 1i*. 4F,- Ti. C 2"u Exelon Approver:

P,4 Namsg

, Na"W

CALCULATION NO. PM-1058 IREV. NO. 1 PAGE NO. 2 of1 CALCULATION TABLE OF CONTENTS 1.0 PURPOSE/OBJECTIVE..................................................................................... 3 2.0 METHODOLOGY AND ACCEPTANCE CRITERIA.................................................. 3 2.1 General Description.......................................................................................... 3 2.2 Source Term Model.......................................................................................... 3 2.3 Release Model ................................................................................................ 4 2.4 Dispersion Model............................................................................................. 4 2.4.1 EAB and LPZ ........................................................................................... 4 2.4.2 Control Room ........................................................................................... 4 2.5 Dose Model ................................................................................................... 5 2.5.1 EAB and LPZ........................................................................................... 5 2.5.2 Control Room ............................................................................................ S 2.6 Acceptance Criteria........................................................................................... 5 3.0 ASSUMPTIONS.............................................................................................. 7 3.1 Activity Release and Transport Models.................................................................... 7 3.2 Control Room Model ........................................................................................ 7 3.3 Site Boundary Model ........................................................................................ 7 4.0 DESIGN INPUT.............................................................................................. 8 4.1 Mass Release Data ........................................................................................... 8 4.2 Iodine Distribution ........................................................................................... 8 4.3 Noble Gas Distribution ...................................................................................... 8 4.4 Control Room Data........................................................................................... 9 4.5 EAB and LPZ Data........................................................................................... 9

5.0 REFERENCES

.............................................................................................. 10 6.0 CALCULATIONS.......................................................................................... 11 6.1 Cloud Volumes, Masses, and Control Room Intake Transit Times.................................... 11 6.2 Dispersion for Offsite Dose Assessment ................................................................. 12 6.3 Release Isotopics and Quantification ..................................................................... 12 6.4 Dose Assessment............................................................................................ 13 7.0

SUMMARY

AND CONCLUSIONS..................................................................... 14 8.0 Owners Acceptance Review Checklist for External Design Analysis................................. 15 Attachments:

A. Spreadsheet performing MSLB Dose Assessment [pages A1I-A6]

B. Computer Disclosure Sheet [pages B I-B I]

I CALCULATIONNO. PM-1058 I REV. NO. 1 I PAGENO. 3 of 15 ]

1.0 PURPOSE/OBJECTIVE The purpose of this calculation is to determine the Control Room (CR), Exclusion Area Boundary (EAB), and Low Population Zone (LPZ) doses following a Main Steam Line Break (MSLB) Accident based on the assumptions on the break and resulting radiological releases to the Turbine Building as discussed in UFSAR [Reference 1] Sections 14.6.5 and 14.9.2.3, and the additional assumptions for use of Alternative Source Terms (AST) contained in Appendix D of Regulatory Guide (R. G.) 1.183 [Reference 6].

Inhalation Committed Effective Dose Equivalent (CEDE) Dose Conversion Factors (DCFs) from Federal Guidance Report No. 11 [Ref. 3] are used for calculation of normalized Iodine-1 31 Dose Equivalent activity in this calculation.

As per UFSAR Section 14.6.5, this event involves the postulation that one main steam line instantaneously and circumferentially breaks outside the secondary containment at a location downstream of the outermost isolation valve. Closure of the Main Steam Isolation Valves (MSIVs) terminates the mass loss when the full closure is reached. No operator actions are assumed to be taken during the accident, so the normal air intake into the Control Room continues unfiltered during the duration of the event.

The mass of coolant released during the MSLB was obtained from reference 1, which bases analysis on 10.5-second closure of main steam isolation valve. Specifically, as per UFSAR Section 14.9.1.5 and the Reference 2 MSLB Calculation for Power Rerate, a release of 165,120 pounds of reactor water and 25,800 pounds of steam is used.

2.0 METHODOLOGY AND ACCEPTANCE CRITERIA 2.1 General Description The radiological consequences resulting from a design basis MSLB accident to a person at the EAB; to a person at the LPZ; and to an operator in the Control Room following an MSLB accident were performed using a Microsoft EXCEL spreadsheet, provided as Attachment A.

2.2 Source Term Model No fuel damage is expected to result from a MSLB. Therefore, the activity available for release from the break is that present in the reactor coolant and steam lines prior to the break, with two cases analyzed, corresponding to the Reactor Coolant System Specific Activity limits in Technical Specification 3.4.6 and its Basis. Case 1 is for continued full power operation with a maximum equilibrium coolant concentration of 0.2 uCi/gm dose equivalent 1-131. Case 2 is for a maximum coolant concentration of 4.0 uCi/gm dose equivalent 1-131, based on a pre-accident iodine spike caused by power changes. In determining 1-131 equivalence, inhalation CEDE DCFs from Ref. 3 are used. This accident source term basis meets the guidance in R.G. 1.183 for analysis of this event.

CALCULATION NO. PM-1058 REV. NO. 1 PAGE NO. 4 of 15 [

2.3 Release Model The release model is identical to that historically used. The previously determined mass of reactor coolant release and mass of steam release, before the break is isolated by MSIV closure, are used. Reactor coolant radioactivity is based on the above reactor coolant concentrations.

Releases are assumed to be instantaneous and no credit is taken for dilution in turbine building air.

2.4 DispersionModel Offsite and Onsite X/Q determinations are handled differently, but conservatively in both cases.

2.4.1 EAB and LPZ EAB and LPZ X/Q's are determined using the original methodology in R.G. 1.5 [Ref. 5].

Specifically:

X 0.0133 Q Oyu where Uy = horizontal standard deviation of the plume (meters) u = wind velocity (meters/second)

Horizontal standard deviations are taken from the PAVAN outputs for the EAB and LPZ included in Calculation PM-1055 [Ref. 9]. Per Regulatory Guide 1.5, F stability and a 1 meter/sec wind speed are used.

2.4.2 Control Room For control room dose calculations, the plume was modeled as a hemispherical volume, the dimensions of which are determined based on the initial steam blowdown and that portion of the liquid reactor coolant release that flashed to steam.

Activity release is conservatively assumed to effectively occur at the Control Room intake elevation and, again conservatively, no credit is taken for plume buoyancy. A conservative translation time of the plume over the intake is assumed.

The activity of the cloud is based on the total mass of water released from the break, not just the portion that flashes to steam. This assumption is conservative because it considers the maximum release of fission products.

CALCULATION NO. PM-1058 REV. NO. 1 PAGE NO. 5 of 15 2.5 Dose Model Dose models for both onsite and offsite are simplified and meet R.G. 1.183 [Ref. 6]

requirements, providing results in units of Total Effective Dose Equivalent (TEDE). Dose conversion factors are based on Federal Guidance Reports 11 and 12 [Refs 3 & 4].

2.5.1 EAB and LPZ Doses at the EAB and LPZ for the MSLB are based on the following formulas:

DoseCEDE (rem) = Release (Curies) *1 (sec/m3 )

• Breathing Rate (m 3 /sec)

• Inhalation DCF (rem CEDE/Ci inhaled)

Q and Dose Ell (rem)= Release (Curies)

• O (sec/mr3) Submersion DCF (ren EDE - m 3 / Ci - sec)

Q and finally, DoseTEDE (rem)= DoseCEDE (rem) + DoseEDE(rem) 2.5.2 Control Room CR operator doses are determined somewhat differently, because steam cloud concentrations are used, rather than X/Q times a curie release rate. No CR filter credit is taken and, therefore, for inhalation, a dose for a location outside of the CR can be and is used. For cloud submersion, a geometry factor is used to credit the reduced plume size seen in the control room. This is a conservative implementation of RG 1.183 guidance. The formulas used are:

Dose cEDE (rem) = Plume Concentration (Ci/m 3 )

• Transit Duration (sec)

• 3 Breathing Rate (m /sec)

• Inhalation DCF (remCE.E/Ci inhaled) and DoseEDE (rem) = Plume Concentration (Ci/m 3 )* Transit Duration (sec)

• Submersion DCF (remEDE - m 3 /Ci - sec) and finally, DoseTEDE (rem) = DoseCEDE (rem) + Dose EDE (rem) 2.6 Acceptance Criteria Dose acceptance criteria are per 10CFR50.67 [Ref. 7] and R.G. 1.183 [Ref. 6] guidance.

Table 1 lists the regulatory limits for accidental dose to 1) a control room operator, 2) a person at the EAB, and 3) a person at the LPZ boundary.

I CALCULATION NO. PM-1058 I REV. NO. 1 I PAGE NO. 6 of 15 Table 1. Regulatory Dose Limits (Rem TEDE) per Refs. 7 and 6.

1-131 Dose CR EAB LPZ Equivalent (30 days) (2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />) (30 days Normal Equilibrium 5 2.5 2.5 Iodine Spike 5 25 25

I CALCULATION NO. PM-1058 I REV. NO. 1 I PAGE NO. 7 of 15 I 3.0 ASSUMPTIONS 3.1 Activity Release and TransportModels

• Iodine activity distribution in the coolant is taken from UFSAR [Ref. 1] Section 14.6.5.2.1, assumption 2.

• Total release quantities from the break are taken from UFSAR [Ref. 1] Section 14.9.1.5, with Section 14.6.5 break flow and MSIV closure characteristics, including the conservativel0-second valve closure time in comparison to the less than or equal to 5 seconds isolation time limit of Surveillance Requirement 3.6.1.3.9 [Ref. 8].

" Release from the break to the environment is assumed instantaneous. No holdup in the Turbine Building or dilution by mixing with Turbine Building air volume is credited.

" The steam cloud is assumed to consist of the initial steam blowdown and that portion of the liquid reactor coolant release that flashed to steam.

" The activity of the cloud is based on the total mass of water released from the break, not just the portion that flashes to steam. This assumption is conservative because it considers the maximum release of fission products.

" The fraction of liquid water contained in steam, which carries activity into the cloud, is assumed to be 2%, a conservatively high value consistent with current Boiling Water Reactor practice.

" A conservatively high flashing fraction of liquid water released of 40% is assumed.

However, all activity in the water is assumed to be released.

" For offsite dose calculations, the release is treated per Regulatory Guide 1.5 [Ref. 5].

Buoyancy effect of the cloud was conservatively ignored.

" For the control room dose calculations,

• the plume is modeled as a hemispherical volume. This is consistent with the assumption of no Turbine Building credit. It is also reasonable for the more likely release paths through multiple large openings above the Turbine Building operating deck.

> dispersion of the activity of the plume is conservatively ignored.

> The cloud is assumed to be carried away by a wind of speed 1 m/s. Credit is not taken for decay.

3.2 ControlRoom Model

• No credit is taken for the operation of the control room emergency filtration systems during the MSLB.

" Inhalation doses are determined based on concentrations at the intake, and exposures for the duration of plume traverse.

• External exposure doses are determined based on concentrations at the intake, exposures for the duration of plume traverse, and a geometry factor credit based on the control room envelope volume of 176,000 cubic feet.

3.3 Site Boundary Model This model is as discussed in Subsection 2.5 above.

I CALCULATION NO. PM-1058 I REV. NO. 1 I PAGE NO. 8 of 15 I 4.0 DESIGN INPUT 4.1 Mass Release Data

• The mass of steam released is 25,800 lb. [Section 14.9.1.5 of Ref. 1 and Ref. 2]

• The mass of liquid water released is 165,120 lb. [Section 14.9.1.5 of Ref. 1 and Ref.

2]

4.2 Iodine Distribution The PBAPS UFSAR [Ref. 1] Section 14.6.5.2.1 provides the following design basis concentrations of significant radionuclides contained in the coolant:

....... lsotooe Iodine ..... v ...

Activity (uCi/cc)

. I Ir .... I 1-131 0.17 1-132 1.02 1-133 1.04 1-134 1.47 1-135 1.30 4.3 Noble Gas Distribution The MSLB Power Rerate Calculation [Ref. 2] provides the following Noble Gas concentrations for potentially significant radionuclides contained in the coolant:

Noble Gas Concentration Isotope uCi/q Kr-83M 1.92E-03 Kr-85M 3.44E-03 Kr-85 1.13E-05 Kr-87 1.13E-02 Kr-88 1.13E-02 Kr-89 7.33E-02 Xe-131M 8.46E-06 Xe-133M 1.63E-04 Xe-1 33 4.62E-03 Xe-1 35M 1.47E-02 Xe-1 35 1.24E-02 Xe-1 37 8.46E-02 Xe-1 38 5.02E-02

I CALCULATION NO. PM-1058 I REV. NO. 1 I PAGE NO.9 of 15 4.4 Control Room Data

" Control Room Envelope = 176,000 ft 3. [Ref. 10]

" No Emergency Filtration Credit taken.

4.5 EAB and LPZ Data

• EAB Distance from Release, m 823 [Ref. 1]

" LPZ Distance from Release, m 7300 [Ref. 1]

I CALCULATION NO. PM-1058 I REV. NO. 1 I PAGE NO. 10 of 15 1

5.0 REFERENCES

1. PBAPS UFSAR, Rev. 18.

2. PBAPS Calculation PM-740, Rev. 1A, "Power Rerate MSLB Dose Verification and Rerated Doses".

3. Federal Guidance Report No. 11, "Limiting Values of Radionuclide Intake and Air Concentration and Dose Conversion Factors for Inhalation, Submersion, and Ingestion",

1988.

4. Federal Guidance Report No. 12, "External Exposure to Radionuclides in Air, Water, and Soil", 1993.

5. Regulatory Guides 1.5, "Assumptions Used for Evaluating the Potential Radiological Consequences of a Steam Line Break Accidents for Boiling Water Reactors," 3/10/71.

6. Regulatory Guide 1.183, "Alternative Radiological Source Terms For Evaluating Design Basis Accidents At Nuclear Power Reactors", July 2000.

7. 10 CFR Part 50.67, "Accident Source Term".

8. PBAPS Technical Specification 3.6.1.3, "Primary Containment Isolation Valves",

Surveillance Requirement 3.6.1.3.9.

9. Design Analysis No. PM-1055, Rev. 0 "Calculation of Alternative Source Terms Onsite and Offsite X/Q Values".

10. PBAPS Calculation PM-738, Rev. A, "Power Rerate Control Rod Drop Dose Verification and Rerated Doses".

I CALCULATION NO. PM-1058 I REV. NO. 1 I PAGE NO. 11 of 15 6.0 CALCULATIONS No or minimal fuel damage is expected for the limiting MSLB. As discussed in section 2, two iodine concentrations will be used (0.2 pCi/g and 4.0 pCi/g) [per Refs. 6 and 8] when determining the consequences of the main steam line break. All of the radioactivity in the released coolant is assumed to be released to the atmosphere instantaneously as a ground-level release. No credit is taken for plateout, holdup, or dilution within facility buildings.

The spreadsheets in Attachment A perform this analysis using data and formulations discussed above. The following summarizes parameters and their treatment in the spreadsheet.

6.1 Cloud Volumes, Masses, and Control Room Intake Transit Times As stated in Section 3.1, the cloud is assumed to consist of the initial steam blowdown and that portion of the liquid reactor coolant release that flashes to steam. The flashing fraction (FF) is derived as follows:

FF x (steam enthalpy at 212 F) + (1-FF) x (liquid enthalpy at 212 F) =

(liquid enthalpy at temperature of steam at reactor vessel outlet)

A 548 F vessel outlet temperature is used, with liquid enthalpy of 546.9 BTU/Ib.

At 212 F, a steam enthalpy of 1150.5 BTU/Ib and a liquid enthalpy of 180.17 BTU/Ib are used (these enthalpies are taken from the ASME Steam Tables).

Substituting, FF = (546.9 - 180.17) / [(1150.5 - 180.17)] = .378 For conservatism, a value of .40 or 40% is used below.

Mass of water carrying activity into the cloud is calculated as the sum of the fraction of water in the steam and the liquid blowdown.

The mass steam released = 25,800 lb The mass liquid water released = 165,120 lb Flashing fraction for calculating cloud volume = 40%

The mass water contained in steam released = (25,800 Ib)

• 2%

= 516 lb The mass of water carrying activity into the cloud = 516 + 165,120 lb

= 165,636 lb

= (165,636 lb)(453.59 g/lIb)

= 7.5131E7 g The mass of steam in the cloud = (25,800 - 516) + 40%*165,120 lb

=25,284 + 66,048

= 91,332 lb

CALCULATION NO. PM-1058 REV. NO. I PAGE NO. 12 of 15 The release is assumed to be a hemisphere with a uniform concentration. The cloud dimensions (based on 91,332 lb of steam at 14.7 psi and 212 OF, vg = 26.799 ft3/Ib) are calculated as follows:

Volume = (91,332 lb)(26.799 3 ft 3/lb)

= 2,447,600 ft

= (2,447,6003 ft3 )/(35.3 ft3/m 3)

= 69,337 m The volume of a hemisphere is Trd3 /12. Thus, the diameter of the hemispherical cloud is 64.2 meters.

The period of time required for the cloud to pass over the control room intake, assuming a wind speed of 1 m/s is 64.2 s (=(64.2 m)/(1 m/s)).

Therefore, at a wind speed of 1 m/s, the base of the hemispherical cloud will pass over the control room intake in 64.2 seconds.

6.2 Dispersionfor Offsite Dose Assessment As discussed in Section 2.4.2 the following formulation was used for Offsite Dose X/Q assessment, with F Pasquill Stability and a 1 m/sec wind speed.

X 0.0133 Q UyU where CF = horizontal standard deviation of the plume (meters) u = wind velocity (meters/second)

As calculated in the PAVAN run in Reference 9, at the 823 meter EAB distance Ty is 31.0, and at the 7300 meter LPZ distance cy is 222.6. The resulting EAB and LPZ X/Qs are 4.29E-04 and 5.97E-05 sec/m 3 , respectively.

6.3 Release Isotopics and Quantification The iodine isotopic distribution given in Section 4.2 is used. The concentrations of this mix are adjusted to 1-131 equivalence, using the inhalation Committed Effective Dose Equivalent (CEDE) Dose Conversion Factors (DCFs) from Federal Guidance Report No. 11 [Ref. 3]. This is a more conservative set of DCF assumptions for Control Room and off-site dose calculation than the use of ICRP 2 DCFs. It is also more conservative for these calculations than use of R.

G. 1.109 or Federal Guidance Report No. 12 [Ref. 4] DCFs.

This 1-131 equivalent mix is adjusted to the activity yielding the two design basis MSLB accident reactor coolant activities of 0.2 g.Ci/cc and 4.0 gCi/cc. The released activities are these concentrations times the 7.51 E+07 grams of water carrying activity released, with the assumption that TS activities are based on laboratory temperature and pressure conditions.

I CALCULATIONNO. PM-1058 I REV. NO. 1 I PAGE NO. 13 of 15 For the Noble Gases, the isotopic distribution given in Section 4.3 is used. The released activities are these concentrations times the 25,800 lb mass of steam released, converted to 1.1 7E+07 grams using the 453.59 g/lib conversion factor.

6.4 Dose Assessment Doses at the EAB and LPZ distances, and in the Control Room are calculated in Attachment A using the formulas in Section 2.5. Concentrations at the receptor locations are that in the steam plume for the Control Room or based on the release times the applicable X/Q for the EAB and LPZ.

Doses are calculated for inhalation (rem CEDE) and plume submersion (rem EDE) and totaled to yield rem TEDE. The breathing rate of 3.47E-04 m 3/sec is per RG 1.183 guidance without the round-off.

The resulting calculated doses are in the spreadsheet and in the Summary and Conclusions Section below.

I CALCULATION NO. PM-1058 REV. NO. 1 PAGE NO. 14 of 15 7.0

SUMMARY

AND CONCLUSIONS Accidental doses from a design basis MSLB were calculated for the control room operator, a person at EAB, and a person at LPZ. The results are summarized in the Table below. The doses at the Control Room, EAB, and LPZ resulting from a postulated design basis MSLB do not exceed, and are a small fraction of, the regulatory limits.

Location Case 1 Case 2 (normal equilibrium (iodine spike limit of 0.2 jtCi) limit of 4.0 gaCi)

Dose (rem TEDE) Dose (rem TEDE)

LIMITS CR: 5.0; EAB&LPZ: 2.5 CR: 5.0; EAB&LPZ: 25 EAB 9.88E-02 1.97E+00 LPZ 1.38E-02 2.75E-01 CR 1.62E-01 3.23 E+00

1 CALCULATION NO. PM-1058 I REV. NO. I I PAGE NO. 15 of 15 8.0 Owners Acceptance Review Checklist for External Design Analysis Page 1 of I DESIGN ANALYSIS NO. PM-1058 REV: I Yes No N/A I. Do assumptions have sufficient rationale?

El 11

2. Are assumptions compatible with the w)ay the plant is operated and with the El licensing basis? . rlvr -*"f1 El El El

3. Do the design inputs have sufficient rationale? nl

4. Are design inputs correct and reasonable? 2/ El El Are design inputs compatible with the way the plant is operated and with the El licensing basis? (.- cr- /- T)

6. Are Engineering Judgments clearly documented and justified? E~El El Are Engineering Judgments compatible with the way the plant is operated and with the licensing basis? ~ El Do the results and conclusions satisfy the purpose and objective of the Design Analysis? ~El El Are the results and conclusions compatible with he way the plant is operated and with the licensing basis? f4-0. X ;3 ý V El El

10. Does the Design Analysis include the applicable design basis documentation? El El Have any limitations on the use of the results been identified and transmitted El El to the appropriate organizations?

12. Are there any unverified assumptions?

13. Do all unverified assumptions have a tracking and' closure mechanism in place?

Have all affected design analyses been documented on the Affected [] * []El Documents List (ADL) for the associated Configuration Change'?

Do the sources of inputs and analysis methodology used meet current V] l]l technical requirements and regulatory commitments? (If the input sources or

15. analysis methodology are based on an out-of-date methodology or code, E/ El El additional reconciliaion may be required if the site has since committed to a more recent code) '.f-T p l,ý" I&ll.3)

16. Have vendor supporting technical documents and references (including GE DRFs) been reviewed when necessary?

EXELON REVIEWER: <5It L*7*4*-* f. ATE: ,q

Calculation PM-1 058, Rev. I Attachment A Page Al of A6 1

2 A B PBAPS MSLB Dose Spreadsheet

___1Icontinued DC E I F S G H I.. .. J Case 1: 1Reactor Coolant at maximum value (DE 1-131 of 0.2 uCi/oc) permitted for full power operation K

3 69,337 Volume of cloud (cubic meters) I Case 2: Reactor Coolant ati 'maximum value permitted.(DEI1-131 of 4.0 uCi/cc) 4 7.51 E+07 Mass of water in reactor coolant release (grams) Icorresponding to an assumed pre-accident spike r...............

5 6

1.17E+07 Mass otsteam release (grams)a 1 rea cto r coo la nt den s wh en

._._... .. A_ ~ I __sm _

7 64.2 seconds for cloud to pass over CR intake for wind speed of 1 mi/second I_

8 1760O OVolume of Control Room Envelope (cubic feet) _ _ __

10 Haloens ___ f Case 1 Case 2 _

11 Activity .__ Release Release 12 Distribution Normalized , Case 1 Case 2 Case 1 Case 2 Cloud Cloud

_13 Isotope 1 (UFSAR FGR 11 1-131 DE Normalized Normalized Activity Activity Concentration Concentration 14 1Sect. 14.6.5) DCF' Activity Activity Activity Release Release 15 1 uCi/cc Rem/Ci uCi/cc uCi/cc uCi/cc Ci Ci Ci/m 3 Citm _

16 1-131 0.17 3.29E+04 1.70E-01 8.07E-02 1.61 E+00 6.07E+00 1.21 E+02 8.75E-05 1.75E-03 17 1-1321 1.02 3.81E+02 1.18E-02 5.61E-03 I 1.12E-01 3.64E+01 7.28E+02 5.25E-04 1.05E-02 18 1-1331 1.04 5.85E+03 i 1.85E-01 8.78E-02 1 1.76E+00 3.71 E+01 7.42E+02 5.35E-04 1.07E-02 19 1-134 1.47 1.31E+02 I 5.85E-03 2.78E-03 5.56E-02 5.25E+01 1.05E+03 j 7.57E-04 1.51E-02 20 1-135 1.3 1.23E+03 4.86E-02 2.31 E-02 4.62E-01 4.64E+01 9.28E+02 6.69E-04 1.34E-02 21 __ 4.21E-01 2.OOE-01 4.00E+00 _ __

22 t i "non-spiked" "spiked" _I _

23 Noble Gasess I ___ _

24 Calc. I [ Case 1 Case2. ___

25 1 PM-740-A I Release Release _ _

26 Table3 Case 1I Case2 Cloud Cloud 27 2"81 Isotope 1 Noble Gas Activity Activity

--Rel-e-ase Activity

=---Rele ase Concentration Concentration _

29 30 31 Kr-83M uCi/9m 1.92E-03 Ci 2.25E-02 Ci 2.25E-02 Ci/m 3 3.24E-07 T Ci/m 3 3.24E-07 32 Kr-85M 3.44E-03 4.0-3E- 14.E-02 5.81E-07 5.81E-07 33 Kr-85 1.13E-05 1.32E-04 I 1.32E-04 1.91E-09 1.91E-0g .

34 Kr-87 1.13E-02 1.32E-01 1.32E-01 1.91E-06 I 1.91E-06 _

35 Kr-88 1.13E-02 1.32E-01 1.32E-01 1.91E-06 I 1.91E-06 _

36 37 Kr-89 Xe-131 M 7.33E-02 8.46E-06 8.58E-01 9.90E-05 8.58E-01 9.90E-05 1.24E-05 1.43E-09 1.24E-05 1.43E-09 Ti 38 Xe-133M 1.63E-04 1.91E-03 1.91E-03 2 75E-08 I 2.75E-08 _

39 Xe-133 4.62E-03 5.41E-02 5.41E-02 7.80E-07 7.80E-07_

40 Xe-135MI 1.47E-02 1.72E-01 1,72E-01 i 2.48E-06 2.48E-06 _

41 Xe-135 1 1.24E-02 1.45E-01 I 1.45E-01 1 2.09E-06 2.09E-06 _ __

42 Xe-137 18.46E-02 9.90E-01 9.90E-01 1.43E-05 1.43E-05 _ _

43 Xe-138 5.02E-02 5.87E-01 5.87E-01 I 8.47E-06 8.47E-06 _ _

44 I _ _ _ I _

Calculation PM-1058, Rev. 1 Attachment A Page A2 of A6 A 8 C D E F G H I JI K 45 Inhalation Doses 46 Curies Released Case 1 Dose (rem CEDE) Case 2 Dose (rem,,CEDE) 47 to the Environment (Inhalation) (Inhalation) .....

Isotope Case 1 i Case 2 DCF , CR EAB LPZ CR ( EAB ) LPZ

............. 6.07E+00 4.14E-03 49 1-131 1.21 E+02 3.29E+04 6.41 E-02 2.97E-02 1.28E+0 0 5.94E-01 .28E-02....

5_B2 50 3.64E+01 i7.28E+02 3.812E+02 4.462E-03 2.06E-03 8.1 E2 -02 4.13E-02 .75E-03 51 1-133 ~j3.71 E+01 7.42E+02 I5,85E+03 6.97E 3.23E-02 ll4.50E2-03 1 39E +0'0 6.46E-01 9.OOE-02 52 1-134 1 5.25E+01 1.05E+03 1.31E+02 2.21 E-03 1.022-03 1.422-04 4.42E-0 2 2.05E-02 ,i.i .86#.-0..3 ......

+~~~~~~~..... 3.67E-0 1 53- 1-135 D ...........

1.4E0 ..... . !.............. ....+

9.28E+02 11.23E+03 8.5,0E-03 1.18E-03 1.70E62-01' 2 .37E-02 5 1.59E-01 7.6 1.02E-02 3.1 8E+O}0 1.47E+00 .05E-01 55 ... ............

T3. .s ... ..)

56 External Doses 57 + Curies Released ___ Case 1 Dose (rem EDEI Case 2 Dose (rem EDE) 58 to the Environment _ _(External) ____

59 Isotope . Case 1 1 Case 2 DCF 2 Cl EAB LP CR LEAB LPZ I 6.07E+00 .1.21 E+02 6.73E-02 4 3.51E-03 4 60 1-131 E-05 1.75E-04 2.44E-05' 3.82E-0 .88E-04 7.06EE-04 6.47E-03 9.01E-04 1.41 t-07 1.29E-01 1 .80E-02 61 3.64E+01 . 7.28E+02 4.14E-01 I 62 1-133 3.71 E+01 7.42E+02 1.09E-01 1.89E _04 1.73-E-03 2.41 E-04 3.78E-0 3 3.46E-02 4 .822-03 63 1-134 ...

25E01I 1.05E+03 4.81E-01 1.18~ :03- i Ti7-ý . i'i 2.36E-0 2 ~ 2.17E-01 3 .02E-02 64 1-35 4.64E+01 9.28E+02 2.95E-01 6.41E -04 5 88E-03 8.18E-04 1.28E-0 2 1.18E-01 11 .64E-02 65 Kr-83M 2.25E-02 2.25E-02 5.55E-06 -12 535E-11 7.45E-12 5.84E-1 2 5.35E-11 .5-12 66 Kr-85M l4.03E-02 4.03E-02 _ 2.77E-02 5.21E -08 4.78E-07 6.66E-08 I 5.21 E-0 8 4.78E-07 6 .66E-08 67 Kr-85 - 1.322-04 1.32E-04 4.40E-04 2.72EE-12 2.50E-11 3.48E-12 2.72E-1 9.43E-012 2.50E-11 1 3.48E-12 68 Kr-87 11.322-01 1.32E-01 1.52E-01 9.43Ez-07 8.65E-06 1.20E-06 7 8.65E-06 1.20E-06 Kr-88 2.34E -06E+0)0.060E+00 7! 2.14E-05 2.98E-06 2.34E-0 6 1 2.14E-05 2 .981-06 69 1.32E-01 1.32E-01 3.77E-01

• Kr-89 8.58E-01 0.OOE+00 t +00 0. OOE+00 00 0.00E+0 0 0.0012+00 0.00E+00 70 8.58E-01 9.90 E-05 9.902-05 1.44E-03 6.67E-1 2 ( 6.11E-11 8 .512E-12 71 Xe-1 31M 12 6.1E-11i 8.51E-12 72 Xe-133M 1.91E-03 1.91 E-03 5.07E-03 4.53EE-10 4.15E-09 5.78E-16 4.53E-1 0 4.15E-09 5 .78E-10 73 Xe-133 _ 5.41E-02 5.41E-02 5.77E-03 E-08 i1.34 -07 * .86E-08 1.46E-0 8 1.34E-07 1 .86E-08 74 Xe-135M 1.72E-01 1.72E-01 7.55E-02 6.08EE 5.57E 7.76E-07 6.08E-0 7 5.57E-06 7 .76E-07 75 1.4.

, 52-01 I __.4+-01 4.40E-02 -07 ) 2.74E-06 + 3.82E-07 +7 2.-74 E-0-6T .82E-07 2.99E 76 003 2.02E+00 0.00E+00 '0 0.002+00 0 OOE+00 77_ Xe-138 5.87E ~-06 5.38E-05 7.49E-06 S 5.382E-05 7 .4.92-0.6-Xe 37.....

i 587-01 5.87E-01 2.13E-01 78 Su~b-total __ 2.7-51  !-3 2.52E-02_ 3.51 E-03 2 5.02E-01 6 .99E-02__

79 Toa _mTEDE) 1.621 ~i 9.88E-02 1.38E-02I 3.23E+e- 0 1.97E+00 t2 .75E-01 80 4. 4 81 .. Dose Conversion Factor (rem/Curie) from Federal Guidance Report (FGR) 11 per Reg. Guide 1.183 82 ' Dose Conversion Factor (rem-mOlCurie-second) from FGR_12 per Fleg. Guide 1.183 4 .. ~...-....-........,.

3 83 3.47E-04 iBreathing rate (m lsecond) per Regulatory Guide 1.183 (without round-off). -A -- 4 5.05E02,-Control Room Geometry Factor per Reg. Guide 1.183, Regulatory Position 4.2.7 85 3.1OE+Oi.!EABo', (meters) for F stability, (taken from PAVAN runs in Ret. 9) 86 2.226E+02 LPZ -, (meters) for F stability, (taken from PAVAN runs in Ref. 9) _ _

B7 1.002+00 )Wind Speed (m/s) ________ ____ __

88 3 4.29E-04 XIO (seconds/m) at EA Boundary 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> based on RG 1.5 methodology 89! 5.97E-05 XOQ (secondstm3) at Low Population Zone 2 based on RG 1.5 methodology

"-i

Calculation PM-1058, Rev. 1 Attachment A Page A3 of A6 A B C D E F G 1 PBAPS MSLB DC Case 1: Reactor Coolant at maximum 2

3 69337 Volume of cloud Case 2: IReactor Coolant at maximum 4 75131000 I. . . . . .. . . . .. .. .. .. .. ..... .. .. .. Mass of. ... water

- -....ý . ......-

, ir I ~

5 =25800*453.59 Mass of steam r 6 1 _ reactor coolant 7 64,2 seconds for cloL 8 176000 Volume of Contr .................

9 109. Halogensr ...

-I 11 __Activity_ .... ........... .....................-.............. .........

............. 7 12 Distribution 1 Normalized Case 1 Casele2 Case 1 13 (UFSAR Isotope FGR 11 1-131_DE Normalized N or ma li ....... + A ti i t. ............

14 Sect. 14.6.5) DCF 1 Activity Activity . . Release 15 RemlCi + uCi/cc uCi/cc Ci uCilcc uCi/c _

16 1-131 0.17 32900 =C16"616/C$16 =D16*0.2/D$21 =E16"20 =E16*$A$4*0.000001/$A$6 1-132 :1.02 381 .=C17*B17/C$16 =E18720 =E18*SA$4"0.000001/$A$6 I-133 ~1.04 5846  :=C18*B18/C$16 =D19*0.2/D$21 19 1-134 1.47 =E19"20 =E19*$A$4*0.000001/$A$6 131 *=C19B19/C$16 270 1-135 M3 =D20*0.2/D$21 1230 =C20"620/C$16 =E20*20 =E20*$A$4*0.000001/$A$6 21 1 i=SUM(D16:D20) =SUM(E16:E20) -SUM(F16:F20) 22 *non-spiked" spiked" 23 Noble Gases 24 Calc. Case 1 Case 2 25 - PM-740-A Release Release 26 Table 3 Case 1 Case 2 Cloud Cloud ..... __._,_ _

27 isotope, Noble Gas Activt*y Activity Concentration Concentration

2. .......... .... ....... .......ýMity _ _ Release Release

____Ci/m 3 ___

Ci Ci Cl/m3.

30 _____

31 Kr-83M -0.00192 =B311$A$5"0.000001 10.02246903424 =C31/$A$3 =D31/$A$3 32 Kr-85M 10.00344 =B32"$A$5*0.000001 ;0.04025701968 =C32/$A$3 =D32/$A$3 ........

33 Kr-85 0.000011 3 =833*$A$5"0.000001 i0.000132239628* =C33/$A$3 =D33/$A$3 _

34 Kr-87 _0.113 =834"$A$5*0.000001 0.1322396286 =C34/$A$3 =D34/$A$3 Kr-88 0O.0113 35 =835*$A$5*0.000001 0. 1322396286 j=C35/$A$3 =D35/$A$3 36 Kr-89 0.0733 =B36"$A$5"0.000001 20.8578021926 =C36/$A$3 =D36/$A$3 .

37 Xe-131M 10.000008546 =937*$A$5*0.000001 .00000990041821=C37/$A$3 =D37/$A$3 38 Xe-t 33M _ 0.000163 k40

=B38"$A$5"0.000001 0.001907527386 --C38/$A$3 =D38/$A$3 39' Xe-1 33 10.00462 =B39"$A$5"0.000001 0.05406611364 .=C391$A$3 =D39/$A$3 . . ........

Xe-135M 0.0147 =B40"$A$5"0.000001 0.1720285434  !=C40/$A$3 =D40/$A$3 _

41 Xe-135 0.0124 =E41"$A$5*0.000001 0.1451125128 I=C41/$A$3 -=D41/$A$3 -

42 m-- I Xe-1 37 0.0846 =B42"$A$5"0.000001 10.9900418212 'C42$A$3 =D42/$A$3 _

43 Xe-138 0.0502 B=43"$A$5"0.000001 10.5874716244 ý=C4/$A$3

=D43/$A$3 -

44

Calculation PM-1058, Rev. 1 Attachment A Page A4 of A6 B C D E F G 45 Inhalation Dosi Curies~~~~~~ ..............

46 Curies Released -_----- Case 1 Dose (rem CEDE) 47 to the E nvironm ent .................................... .. ----Inh~alat~io~n,),,

48 .sotopqe Case 1  ! Case 2 DCF' CR EAB 1-131 ---- I=H16 32900 = =C49*$E49*$A$83*$A$88 I'l-H - ý117 . 11 . 1_1. - ....... _

=C502$E502$A$83*$A$88 517 1-132 1-133

=G17

....... G18  : 18 . .. ....581

..................i=H17 5846..... . =117*$E50*$A$83*$A$7

. i- tE-5Y -1jr; *j.......

• =k =C51 ....E51 $A$=83$=A$88..

52 1-134 !Gig ___ =H19 ... 131

.=119$E520$A$83-$A$7 53 1-135~  !--G20_______ =H20 11230 Ž120'$E53*$A$83*$A$7 =C53*$E53*$A$83*$A$88 54.

56 External Doses

_ F K Totals =SUM(A 49:F53) 7=SýUM q4g*G53L F. ................................ . ........... .

57 _____Curies Released Cse IDose (rem EDE) 58 _ to the Environment ___ _*__xe mal _____

5.9 sotppe Case 1 Case2 DCF 2 1{ CR EAB 60 1-131_ _=O49 t=D49 0.0716$E 60*$A$84*$A$7 =C60*$E60*$A$88 61 1-132 I -=C50 1=D50 0.4144 =117"$E .61 *$A$84"$A$7 =C61 *$E61 *$A$88 62 1-133 i=C51 D=51 0.10878 =118$E 62$A$84*$A$7 =C62*$E62"$A$88 63 1-134 =C52_ =052 .0.481 =119"$E 63*$A$84"$A$7 =C63*$E63*$A$88 64 1-135 =C53 =053 .0.29526 =120"$E 64*$A$84*$A$7 =C64*$E64*$A$88 65 Kr-83M i0.02246903424 0.02246903424 .0.00000555 =E31I$E65*$A$84*$A$7 =C65*$E65*$A$88 66 Kr-85M -0.04025701968 0.04025701968 0.027676 =E32"$ E66*$A$84*$A$7 1=C66*$E66*$A$88 67 Kr-85 110.0001322396286 0.000132239628*O.0004403 =E33$1 E67*$A$84*$A$7 =C67*$E67*$A$88 68 Kr-87 10.1322396286 0.1322396286 .0.15244 =E34"$ E68*$A$84*$A$7 =C68*$E68'$A$88 69 Kr-88 0.1322396286 0.1322396286 10.3774 I=E35*$1E69*$A$84*$A$7 =C69*$E69*$A$88 70 Kr-89 0.8578021926 0.8578021926 0 --E-6$ E70'$A$84*$A$7 !=C70r$E70*$A$88 ii I.

71 Xe-i31M 0.00009900418212 0.000099004182 0.0014393 =E37*$1E71 *$A$84*$A$7 =C71 *$E7 1'$A$88 72 Xe-133M L0.001907527386 0.001907527386 0.005069 =E38$1 E72*$A$84*$A$7 =C72*$E72*$A$88 73 Xe-133 0.0.0540661136 4 05406611364 :0.005772 =E39$1 E73"$A$84*$A$7 -C73*$E73*$A$88 -

74 Xe-135M 0.1720285434 0.1720285434 10.07548 =E40"$ E74-$A$84-$A$7 1-C74-$E74'$A$88 75 Xe-135 0.1451125128 0.1451125128 To0.04403 =E41"$/ E75'$A$84-$A$7 L3=075'$E75'$A$88-7 e-137 .0.9900418212 JO.9900418212 i0 =E42$ E76*$A$84*$A$7 1-C76*$E76*$A$88 77 Xe-138 0.5874716244 0.5874716244 .21349 =E43$1 E-7-7-$..A..$8 .4. +$ -A,$,7 tI=-C+77r$E77*$A$8,8 79~ ~ ~

78 Sub-total T.E ~ ~ ~ ~~~~........ .~ta .(e ... ............................................ =SU Tqý...... .. .....

.... . =SUM(G60:G77)_

79 jotaj rmED~I =SUMOI :54+F78) 4_G78 81 !Dose Conversion F 82 _ Dose Conversion ....

83 0.000347 Breathing rate (MI ....................... ............

84 =($A$ 338)1i

• 0. 173 Control Room Ge4 85 31 EAB , (meters) ft -_

86 222.6 LPZ* (meters) f1 _ .............

8,_,71 __ Wind Speed (mis) 8,8 =0.0133tA$85/A$87 /qj(seconds/rn3) _

89 =0.0133/A$86/A$87 X/Q (seconds/rn) . I

Calculation PM-I 058, Rev. I Attachment A Page AS of A6 H I J K 1 value (DE 1-131 of 0.2 uCilcc) permitted for continued full power operation 2 . ..

3 value permitted (DE 1-131 of 4.0 uCi/cc) corresponding to an assumed pre-accident spike 4

5 a- 6 _ _......-.... ..........................................................................

190 _

se 2 .........

10 ________ Case Case 2 ____ ___

11 Reease Release 1--'*" Case 2 Cloud*, Cloud * ~~~

__________ Cloud Cloud______

13 Activit Concentration Concentration 14 ... _Release

... ........ C__

3 15 Ci Ci/m C-/m i 16 =Fl6*$A$4-0.000001/$A$6 -=G16/$A$3 =H161$A$3 17 =F17*$A$4*0.000001/$A$6 =G17/$A$3 =H17/$A$3 _

18 =F 18&$A$4-0.000001/$A$6 =G181$A$3 _ =H18/$A$3- _

19 ý=F19$A$4-0.000001/$A$6 =G19/$A$3 =H19/$A$3 l 20 21

=F20*$A$4"0.000001/$A$6 =G20/$A$3 1=H20/$A$3 .

23 ___

124 .......................

25 26 _ .._

27 i 31 34 ___

35 ........

36 ....

38 37 _______ ______ _____

41 _ _

42 . -- ...

43 _--

"44 _ _

Calculation PM-1058, Rev. 1 Attachment A Page A6 of A6 H .........................

.. J J K 46 Case 2 Dose (rem CEDE) 4 (inhalation) 48 LPZ CR EAB LPZ 49 =C49$E49$A$83$A$89 =J16*$E496$A$834$A$7 =D49*$E49*$A$83$A$88 =D49*$E49$A$83'$A$89 50 =C64*$E4*$A$89$ =J17*$E50*$A$83*$A$7 =D50*$E50$A$83$A$88 =D640$E506$A$89$A$89 51

ý56 =C51 *$E51 *$A$83$A$89 =J 18*$E51 *$A$834$A$7 =D51 *$E51 *$A$8$A$88 =D51 *$E5 *$A$83'$A$89 52 =C52*$E52*$A$83$A$89 =JF12*$E52*$A$83*$A$7 =D52*$E52*$A$83$A$88 =D52*$E$A$89 53 =C53*$E538$A$83A$89 A$84$A$7 =D538$E53*$A$83$A$88 =D538$E53*$A$839$A$89 549 SUM =FSUM(!49*8153) =$SUM

= J49:J$3$8 =SUM(K49:K53) 55 _____________

=6*E6*AS8=6*E6*A8 6.5* =62"$E62*$A$89-J18$6"A$4$$7 57 ___________ __________ Case 2 Dose (rem EDE) ___________

58 _____(External) _______ ____________

59 _ LZCR EAB LPZ 60 =C60*$E60*$A$89 =JF6*$E60"$A$84*$A$7 =D60*$E60$A$88 =D60-$E60"$A$89 61 =C61"$E61*$A$89 =J 17*$E61 *$A$84*$A$7 =D61*$E61*$A$88 =D61*$E61*$A$89 62 =C62*$E62*$A$89 =FJ8*$E62*$A$84*$A$7 =D62*$E62*$A$88 =D62*$E62*$A$89 63 =C63*$E63*$A$89 =JF9*$E63*$A$84*$A$7 =D63*$E63*$A$88 =D63*$E63*$A$89 64 =C64*$E64*$A$89 =J20*$E64*$A$84*$A$7 =D64*$E64*$A$88 =D64*$E64*$A$89 65 =C765$E65"$A$89 =F31 *$E65*$A$84*$A$7 =D65*$E65*$A$88 =D65*$E65*$A$89 66 =C66*$E76*$A$89 =F32*$E66*$A$84*$A$7 =D66*$E66*$A$88 j =D76*$E66*$A$89 67 =C67$E67*$A$89 =F33*$E67*$A$84*$A$7 =D67*$E67*$A$88 =D677$E677$A$89 68 =C68*$E087$A$89 =F34$E68$A$84$A$7 =D68M$E680$A$88 =D68s$E68:$A$89 69 =C69S$E69$A$89 =F354$E69*$A$84$A$7 =D69$E69$A$88 =D69S$E69$A$89 70 =C70*$E70*$A$89 =F36'$E70'$A$84*$A$7 =D70*$E70*$A$88 =D70*$E70*$A$89 71 I=C71-$E71$A$89 _ =F37$E71*$A$84*$A$7 =D71 $E71 $A$88 =D71*$E71 $A$89 72 I=C72*$E72*$A$89 =F38*$E72*$A$84*$A$7 =D72*$E72*$A$88 =D72*$E72*$A$89 73 =C73*$E73*$A$89 ___=F39*$E73*$A$84*$A$7 =D73*$E73*$A$88 =D73*$E73*$A$89___

741 =C74*$E74*$A$89 =F40*$E74*$A$84*$A$7 =D74*$E74*$A$88 =D74*$E74*$A$89 80 8 4 1*=.....$D-87 88 $ A... ..........

8 99i ... .....

CALCULATION NO. PM-1058 [ REV. NO. I PAGE NO. B1 of B I Computer Disclosure Sheet Discipline Nuclear Client:: Exelon Corporation / Amergen Date: May 19, 2008 Project: Peach Bottom Atomic Power Station MSLB AST Job No.

Program(s) used Rev No. Rev Date Calculation Set No.: PM-1058, Rev. 1 Attachment A spreadsheet N/A N/A Status [] Prelim.

X] Final Void WGI Prequalification [ ] Yes

[X] No Run No.

Description:

Analysis

Description:

Spreadsheet used to perform dose assessment for MSLB, as described in calculation.

The attached computer output has been reviewed, the input data checked, And the results approved for release. Input criteria for this analysis were established.

By: H. Rothstein On: May 19, 2008 Run by: H. Rothstein Checked by: P. Reichert Approved by: H. Rothstein /

• Remarks: WGI Form for Computer Software Control This spreadsheet is relatively straight-forward and was hand checked. Attachment includes the spreadsheet in both normal and formula display mode and so is completely documented.