ML061320413

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E-mail from D. Croulet of Entergy to J. Noggle of USNRC, Regarding March 8 IPEC Gw&Sw Dose.Doc
ML061320413
Person / Time
Site: Indian Point  Entergy icon.png
Issue date: 03/09/2006
From: Croulet D
Entergy Nuclear Operations
To: Noggle J
NRC/FSME
References
FOIA/PA-2006-0140
Download: ML061320413 (14)
v • d • e


Text

[ii'me-i 'No, I g-gle - FW-: March 8 IPEC GW& SWDose. do c ae oge .- F: Mrh 8 IPEC GW&SW Dos.do Page .

Pae 11.

From: "Croulet, Donald" <dcroule~entergy.com>

To: "'James Noggle"' <JDN~nrc.gov>

Date: 3/9/06 9:05AM

Subject:

FW: March 8 IPEC GW&SW Dose.doc Jim, Did you receive this yet based on the revision/enhancements made as described below?

Original Message-----

From: Dennis Quinn [1]

Sent: Wednesday, March 08, 2006 4:50 PM To: Croulet, Donald; Matt Barvenik; Mayer, Don; Sandike, Steven Cc: Lavera, Ron; Axelson, William L; Wilson, Daniel

Subject:

March 8 IPEC GW&SW Dose.doc Attached is a revised Dose Calculation Report. The following changes were made after discussion with Mr. Jim Noggle of the NRC.

1- Purpose and Scope Section was added 2- 1st paragraph of Purpose & Scope states that this is a bounding ih estimate, and that Unit 1 releases are included in the RG 1.21 report, and are not included here 3- 2nd paragraph of Purpose & Scope states that this calc does not suffice as the overall site conciptual model, which is under development.

I did not change the figure 2, the new GZA figure. The NRC has the new figure, but I was unable to put into this version until we change this word document into a pdf file. Once we get comments, I can add in the new figure.

Dennis Quinn 845-223-1960 Note: To protect against computer viruses, e-mail programs may prevent sending or receiving certain types of file attachments. Check your e-mail security settings to determine how attachments are handled.

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Purpose and Scope:

The purpose of this calculation is to provide a bounding estimate of the amount of radioactivity being transported to the Hudson River via previously undocumented groundwater and storm water pathways. There are other monitored pathways, such as the North Curtain Drain and the Sphere Foundation Drain Sump of Unit 1 that are sampled and directed to the Discharge Canal. These Unit 1 releases have been discharged as described in the Offsite Dose Calculation Manual and they are included in the Regulatory Guide 1.21 Effluents Report.

As such, the Unit I releases are not included in this IPEC Water Mass Balance Calculation.

The water mass balance methodology is used as a conservative interim measure until sufficient data becomes available from the existing and planned monitoring wells. This current water mass balance methodology is not the complete site conceptual model that describes the groundwater flows. The site conceptual model is under development, and it will be completed after sufficient groundwater elevation and flow data are obtained.

Methodology

Description:

The basic methodology for this dose calculation is based on an overall mass balance driven by precipitation.

The hydrology portion of this calculation was performed by IPEC's consultant, Matthew Barvenik, of GZA GeoEnvironmental, Inc. IPEC concurs with this methodology. This "watershed analysis" partitions thes ".1 precipitation falling on the watershed catchment area (i.e., that portion of the Facility area where the surfac&

topography is sloped towards the river) into water that infiltrates the ground to become groundwater (GW),

water that flows off the surface as storm water (SW) and that water which directly moves back into the atmosphere via evapotranspiration and other processes. See Figure 1, "IPEC Groundwater and Storm Drain Conceptual Drawing". This method of analysis is based on well established hydrologic principles and the parameter selection we've employed is heavily biased towards larger flows and higher W concentrations. As such, we believe that this analysis is significantly conservative, resulting in estimates of H3 moving to the river (both directly and via the Discharge Canal) that will likely be proven to be substantially higher than actually exist with the acquisition of additional data.

Over the entire watershed catchment area of 3.2 million ft 2 , the GW and SW has been segmented relative to the areas of the Facility through which it flows (primarily established based on H3 concentrations in the various Facility areas. See Figure 2, "Indian Point Site Overview" depicting groundwater areas and storm water zones.

Overall, the partitioning was established as follows for infiltration areas contributing to GW flow (does not include paved or building areas):

GROUNDWATER AREAS:

  • AREA 1. The northwestern most area where GW appears to move directly to the river, but passes to the north of the Unit 2 Turbine Building Road (area of 0.25 million ft 2). This GW is unlikely to contain appreciable H3 concentrations based on the data available to date and the lack of likely W sources;
  • AREA 2. The area where the GW appears to move through Unit 2 facilities (area of 0.57 million ft2 );
  • AREA 3. The area where the GW appears to move through Unit 1/3 facilities (area of 1.7 million ft2 );
  • AREA 4. The southwestern most area where GW appears to move directly to the river, but passes to the south of the Unit 3 Turbine Building Road (area of 0.67 million ft2 ). This GW is unlikely to contain appreciable H3 concentrations based on the data available to date and the lack of likely H3 sources.

Page 1

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water SW flow from paved areas and building roof areas has also been partitioned into various zones within the above Facility GW areas as follows:

STORM WATER AREAS:

  • ZONE A. The eastern most parking lots which likely drain along flow paths where the SW is unlikely to contain H3, and storm drain exfiltration into the GW flow zone is also unlikely to pick up H3 (area of 0.35 million ft 2);
  • ZONE B. Within the Unit 2 Facility, the eastern and western zones where SW appears to discharge to the river, but does not pass through the Unit 2 Transformer Yard (area of 0.21 million ft2 );
  • ZONE C. Within the Unit 2 Facility, the middle zone where SW flows to the Discharge Canal, and does pass through the Unit 2 Transformer Yard (area of 0.15 million ft2 );
  • ZONE D. Within the Unit 1 Facility where SW flows to the Discharge Canal (area of 0.13 million ft2 );

and

  • ZONE E. Within the Unit 3 Facility where SW flows to the Discharge Canal (area of 0.75 million ft 2).

A portion of the SW has been assumed to leak out of storm drains and thus increases the GW flow to the river as follows:

  • ZONE A. Storm drain exfiltration =0% - set to 0% because exfiltration from pipes in this zone are unlikely to contribute flow to GW which contains H3 and the SW itself is unlikely to contain HI;
  • ZONE B. Storm drain exfiltration =0% - set to 0% because exfiltration from pipes in this zone are unlikely to contribute flow to GW which contains H3 and the SW itself is unlikely to contain H3;
  • ZONE C. Storm drain exfiltration =25% - set to a relatively high value to result in higher than anticipated GW flow through the Unit 2 Transformer Yard which contains the highest H3 GW values, so as to be conservative;
  • ZONE D. Storm drain exfiltration =50%; set very high given current knowledge of these drains; and
  • ZONE E. Storm drain exfiltration =10%; set to a nominal value given current lack of specific data and limited impact on overall H3 flux due to low H3 concentrations.

H3 concentrations have been established using 2005 data, and Strontium-90 has been included for groundwater flow Area 2.

  • GW flow AREA 1. [H3= 0 pCiIL given lack of likely H3 source areas and flow path which appears not to flow through areas exhibiting H3 concentrations in the GW;
  • GW flow AREA 2. [H 3] = 200,000 pCiI, which represents an upper bound average of the concentrations found in the Unit 2 Transformer Yard (it is expected that the pending Phase I and II data will prove this assumed value for H3 in the GW moving to the river through the Unit 2 area to be substantially higher than actually exists);
  • GW flow AREA 3. [H3] = 620 pCi/L which represents an upper average of the concentrations found in the Unit 1 and 3 Facility areas;
  • GW flow AREA 4. [H 3]= 0 pCiIL given lack of likely H3 source areas and flow path which appears not to flow through areas exhibiting H3 concentrations in the GW;
  • SW flow ZONE A. [H3]= 0 pCi/L given that exfiltration from pipes in this zone are unlikely to contribute flow to GW which contains H:3 and the SW itself is unlikely to contain H3 ;
  • SW flow ZONE B. [H 3 ] = 651 pCifL given measured storm drain concentrations;
  • SW flow ZONE C. [H3] = 2,900 pCiIL given measured storm drain concentrations;
  • SW flow ZONE D. [H3] = 1,560 pCi/L given measured storm drain concentrations; and
  • SW flow ZONE E. [H 3] = 1,560 pCi/L given measured storm drain concentrations.

Page 2

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water The infiltration rate in non-paved/building areas was established at 0.46 feet/year based on the USGS report:

Water Use, Groundwater Recharge and Availability, and Quality in the Greenwich Area, Fairfield County, CT and Westchester County, NY, 2000 - 2002. The precipitation rate for the area was set at 3.74 feet/year based on onsite meteorological data.

Based on the above analysis, it is estimated that approximately 1.36 Ci/year of H3 migrates directly to the river via the GW flow path. It is also estimated that less than 0.02 Ci/year flows directly to the river via SW. It is further estimated that approximately 0.16 Ci/year flows to the river with SW via the Discharge Canal.

It is noted that the H3 concentrations adopted herein are expected to represent values which are significantly greater than those which actually exist given the conservatism exercised during parameter selection. An example of the conservatism employed in these calculations includes:

  • H3 concentrations selected for the various GW and SW flows are likely to be higher values than actually exist. It is believed that these values will be proven to be significantly too high with the acquisition of additional Phase I and II data. This is particularly true for the 200,000 pCi/L adopted for the Unit 2 Transformer Area;
  • The areas contributing GW flow through various IPEC Facilities was biased toward placing more flow through the Unit 2 Transformer Yard where the highest H3 concentrations were used;
  • All GW flow has been assumed to discharge directly to the river. Some of this GW flow must infiltrate the Discharge Canal thus reducing the apportionment to the river;
  • All storm drain pipe leakage has been assumed to be exfiltration which will increase GW flow values.

However, current data in the Unit 2 Transformer Yard indicates that significant GW infiltrates the storm drain during rainfall events, thus flowing to the Discharge Canal via SW rather than directly to the river as GW. In addition, it is noted that SW H3 concentrations were typically obtained during non-storm events and thus represent the high end of H3 values associated with low flow conditions. However, these high H3 concentrations, were then applied to the much higher storm flows where much lower H3 values should exist;

  • All precipitation falling on paved/building areas was assumed to result in SW flow. Some of this water actually evaporates directly to atmosphere from pavement and buildings; and
  • The very large value of GW flow extracted from the GW system via the Unit 1 curtain and footing drains has not been subtracted from the GW flows adopted in the analysis.

Results:

The results of the calculations are shown in Table 1, and they show that the annual dose from the groundwater and storm water pathways due to tritium is 0.000013 millirem per year to the whole body (less than 0.1 percent of the 3 millirem per year liquid pathway limit). If Sr-90 is included in the calculation, the dose to the critical organ (bone) is 0.00075 millirem per year, which is less than 0.1 percent of the 10 millirem per year critical organ limit. The total tritium activity calculated to be released via this pathway is 1.6 Curies, which is less than 0.1 percent of the liquid tritium releases via other pathways.

There are seven tables attached, including one summary table, three tables of doses from storm water pathways, two tables of doses from groundwater pathways, and an additional groundwater dose table including Sr-90.

Figure 3 shows precipitation data for the Indian Point site.

Page 3

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Figure 1 IPEC Ground Water and Storm Drain Conceptual Drawing Evaporation

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Page 4

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IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Table 1.

Total IPEC Summary for Ground Water releases in 2005 (H-3 and Sr-90)

Sum of two monitoring well calculations, 1P2 and 1P3, Areas 2 and 3 Doses, in mrem ISOTOPE BONE , LIVER TOT BODY I THYROID I KIDNEY LUNG I GI-LLI uCi H-3 I H-3 O.OOE+00 1.35E-05 1.35E-05 1.35E-05 1.35E-05 1.35E-05 I 1.35E-05 1.21 E+06l Storm Drain Water from Zone B, EastlWest Unit 2, near MH-2, going to river directly Doses, in mrem ISOTOPEI BONE I LIVER J TOT BODY THYROID] KIDNEY LUNG I QI-LLI IuCi H-3 H-3 O.OOE+00 1.74E-07 1.74E-07 1.74E-07 1.74E-07 1.74E-07 1.74E-07 1.55E+04 Storm Drain Water from Zones C and D/E (Central U2 & U1/U3) to Discharge Canal Doses, in mrem ISOTOPE I BONE I LIVER I TOT BODY THYROID I KIDNEY F LUNG I GI-LLI I uCi H-3 I H-3 O.OOE+00 2.89E-08 2.89E-08 2.89E-08 -2.89E-08 2.89E-08 2.89E-08 1.62E+05 Total mrem I O.OOE+ooi 1.37E-051 1.37E-051 1.37E-051 1.37E-051 1.37E-051 1.37E-051 Total Curies 1 1.3 Unit 2 Ground Water (MW) pathway with Sr-90 added (Area 2)

Doses, in mrem ISOTOPE BONE LIVER TOT BODY THYROID KIDNEY LUNG, GI-LLI Total uCi H-3 0.00E+00 1 .34E-05 1 .34E-05 1 .34E-05 1.34E-05 1 .34E-05 1.34E-05 1.1 9E+06 Sr-90 _98E+O1I.OE+O 7.48E-04 1.83E-04 O.OOE+OO O.OOE+OO O.OOE+OO 2.15E-05 Total 7.48E-04 1.34E-05 1.97E-04 1.34E-05 1.34E-05 7 1.34E-05 l 3.49E-05 1.19E+06 Page 6

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Table 2 Storm Drain Zone B (MH-2 East & West Unit 2) to the Hudson River directly, 2005 Release Rate 6.54E+07 ml/day or 1.73E+04 gpd or 1.20E+01 gpm Duration of Release, in days l 365 Waste vol released = 6.31 E+06 gal Dilution flow I 1.11E+05 I gpm Diltution vol released = 5.83E+10 gal Dil Factor 1.08E-04 (dilution data per IP-CHM-05-042 from Dr. John Hamawi) l Activity 10CFR20 PRE POST POST MICRO-ISOTOPE Released EC*10 DILUTION DILUTION DILUTION CURIES uCi/ml conc limit CONCGMPC uCilml CONC/MPC RELEASED H-3 6.51 E-07 1.OOE-02 6.51 E-05 7.04E-1 1 7.04E-09 1.55E+04 MN-54 . 3.OOE-04 O.OOE+O0 , OOE+O0 O.OOE+0 O.OOE+00 FE-55 1.OOE-03 0.00E+OO- 0:00E+OO O.OOE+00 O.OOE+OO CO-58 2.OE-04 O.OOE+OO O.OOE+00 O.OOE+OQ O.OOE+OO CO-60 3.OOE-05 O.OOE+0O O.OOE+00 O.OOE+O0 O.OOE+00 NI-63 1.OOE-03 O.OOE+00 O.OOE+00 O.OOE+OO O.OOE+0O SR-90 5.OOE-06 O.OOE+OO O.OOE+0 O.OOE+OO O.OOE+OO SB-125 3.00E-04 O.OOE+OO O.OOE+OO O.OOE+00 O.OOE+OO CS-134 9.OOE-06 O.OOE+OO O.OOE+0O O.OOE+0O O.OOE+OO CS-137 1.OOE-05 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 C0-57 6.OOE-04 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL 6.51 E-07 nia 6.51 E-05 7.04E-11 7.04E-09 1 .55E+04 NUREG 0133 "Applicable Factor" for Near Field Dilution = I 1.OOE+0O Adult Total Body mrem ISOTOPE BONE LIVER TOTBODY l THYROID KIDNEY, LUNG GI-LLI H-3 O.OOE+00 1.74E-07 1.74E-07 1.74E-07 1.74E-07 1.74E-07 1.74E-07 MN-54 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+O0 FE-55 O.OOE+00 O.OOE+O0 O.OOE+0O O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 C0-58 O.OOE+O0 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 CO-60 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 NI-63 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+O0 O.OOE+00 SR-9o O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+0 O.OOE+00 O.OOE+00 O.OOE+00 SB-1 25 O.OOE+0O O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+0O O.OOE+0O CS-134 O.OOE+0O O.OOE+OO O.OOE+00 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO CS-137 O.OOE+OO O.OOE+OO A O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+0O C0-57 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+0O TOTAL O.OOE+OO 1.74E-07 1.74E-07 1.74E-07 1.74E-07 1.74E-07 1.74E-07 Page 7

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Table 3 Central Unit 2 Storm Drain Releases of Tritium to the Hudson River via the Discharge Canal in 2005 (Zone C)

Release Rate 3.27E+07 iml/day or 8.64E+03 gpd or 6.OOE+00 gpm Duration of Release, in days  ! 365 Waste vol released = 3.15E+06 gal Dilution flow i.39E+06 I 1 gpm Diltution vol released = 7.31 E+1 1 gal Dil Factor 4.32E-06 (dilution from actual 2005 data)

Activity 10CFR20 PRE POST POST MICRO-ISOTOPE Released EC*10 DILUTION DILUTION DILUTION CURIES l uCi/ml conc limit CONC/MPC uCi/ml CONC/MPC RELEASED H-3 2.90E-06 1.00E-02 2.90E-04 1.25E-1 1 1.25E-09 3.46E+04 MN-54 T 3.OOE-04 O.OOE+O0 0.OOE+OO O.OOE+0O O.OOE+00 FE-55 1.OOE-03 1_ O.OOE+00 l0.:00Er-00747 70,O00E+0O O.OOE+O0 C0-58 _ 2.OOE-04 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 C0-60 3.OOE-05 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Nl-63 1.OOE-03 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 SR-90 5.OOE-06 O.OOE+00 O.OOE+00 O.OOE+0O O.OOE+00 SB-125 3.OOE-04 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 CS-134 9.OE-06 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 CS-137 1.OOE-05 O.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 C0-57 6.OOE-04 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL 2.90E-06 n/a 2.90E-04 1.25E-1 1 1.25E-09 3.46E+04

  • No gamma identified in storm drains, and 2.9E-6 was avg effluent H-3 in 2005 from MH-4a.

NUREG 0133 "Applicable Factor" for Near Field Dilution = I5.OOE+00 Adult Total Body mremr ISOTOPE BONE LIVER TOT BODY THYROID KIDNEY LUNG GI-LLI H-3 O.OOE+O0 6.18E-09 6.18E-09 6.18E-09 6.18E-09 6.18E-09 6.18E-09 MN-54 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+OO FE-55 O.OOE+00 O.OOE+00 0.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 C0-58 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 C0-60 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 NI-63 0O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 O.OOE+00 SR-90 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 0O.OOE+00 SB-125 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 CS-1 34 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+0O CS-137 O.OOE+00 0.OOE+O0 0.OOE+0O O.OOE+OO O.OOE+00 O.OOE+ O I O.OOE+00 C0-57 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL O.OOE+00 6.18E-09 6.18E -09 6.18E-09 6.18E-09 6.18E-09 I 6.18E-09 Page 8

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Table 4 Storm Drain Releases of Tritium to the Hudson River via the Discharge Canal in 2005 from Units 1 and 3 (Zones D and E)

Release Rate I 2.23E+08 mi/day or 5.90E+04 gpd or 4.10E+01 gpm Duration of Release, in days l 365 Waste vol released = 2.15E+07 gal Dilution flow I 1.39E+06 I gpm Diltution vol released = 7.31 E+1 1 gal Dil Factor 2.95E-05 (dilution from actual 2005 data)

Activity 10CFR20 PRE POST POST MICRO-ISOTOPE Released EC*10 DILUTION DILUTION DILUTION CURIES uCi/ml conc limit CONC/MPC uCi/ml CONC/MPC RELEASED H-3

  • 1.56E-06 1.OOE-02 1.56E-04 4.60E-1 1 4.60E-09 1.27E+05 MN-54 3.OOE-04 O.OOE+00 O.OOE+00 OME+00 O.OOE+00 FE-55 1.OOE-03 O.OOE+0 0.OOE+00W 0.flOOE+00 O.OOE+00 C0-58 2.OOE-04 O.OOE+00 O.OOE+OO O.OOE+00 O.OOE+00 C0-60 3.OOE-05 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 NI-63 1.OOE-03 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 SR-90 5.OOE-06 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 SB-125 3.OOE-04 O.OOE+0O O.OOE+O0 O.OOE+00 O.OOE+00 CS-134 9.OOE-06 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+0O CS-137 1.OOE-05 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+0O C0-57 6.OOE-04 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL 1.56E-06 n/a I .56E-04 4.60E-1 1 4.60E-09 1.27E+05
  • No gamma identified in storm drains, and 1.56E-6 was average of effected Storm Drains in 2005 NUREG 0133 "Applicable Factor" for Near Field Dilution = I5.OOE+00 Adult Total Body mrem ISOTOPE BONE LIVER TOT BODY THYROID KIDNEY LUNG GI-LLI H-3 O.OOE+00 2.27E-08 2.27E-08 2.27E-08 2.27E-08 2.27E-08 2.27E-08 MN-54 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+00 FE-55 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+O0 C0-58 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 C0-60 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 NI-63 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 SR-90 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 SB-125 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+0O O.OOE+00 CS- 134 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+00 CS-1 37 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 C0-57 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL O.OOE+00 2.27E-08 2.27E -08 2.27E-08 2.27E-08 2.27E-08 2.27E-08 Page 9

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Table 5 IP3 Tritium Released to Hudson River via Bedrock Pathway in 2005 (from the area near IP3 waterfront, as determined by samples from Monitoring Wells - Area 3)

Release Rate 7.63E+07 lml/day or 2.02E+04 gpd or 1.40E+01 gpm Duration of Release, in days l 365 Waste vol released = 7.36E+06 gal Dilution flow I 1.11E+05 I gpm Diltution vol released = 5.83E+10 gal Dil Factor 1.26E-04 (dilution data per IP-CHM-05-042 from Dr. John Hamawi)

Activity 10CFR20 PRE POST POST MICRO-ISOTOPE Released EC*10 DILUTION DILUTION DILUTION CURIES uCi/ml conc limit CONC/MPC uCi/ml CONC/MPC RELEASED-H-3 6.20E-07 1.OOE-02 6.20E-05 7.82E-1 1 7.82E-09 1.73E+04 MN-54 _ 3.OOE-04 O.OOE+0 O.OOE+00 O.OOE+OO O.OOE+00

, FE-55 _ 1.OOE-03 O.OOE+0O O.OOE+00 l UEO* - t -O.OOE+O0 C0-58 2.OOE-04 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+OO C0-60 3.OOE-05 O.OOE+00 O.OOE+00 O.OOE+0O O.OOE+00 NI-63 1.OOE-03 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 SR-90 5.OOE-06 O.OOE+0O O.OOE+0O O.OOE+00 O.OOE+00 SB-125 3.OOE-04 O.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 CS-134 9.OOE-06 O.OOE+00 O.OOE+0O O.OOE+OO O.OOE+00 CS-137 11.OOE-05 O.OOE+OO O.OOE+0O O.OOE+00 O.OOE+O0 CO-57 6.OOE-04 O.OOE+0O O.OOE+00 O.OOE+00 O.OOE+O0 TOTAL 6.20E-07 n/a 6.20E-05 7.82E-1 1 7.82E-09 1.73E+04 NUREG 0133 "Applicable Factor" for Near Field Dilution = 1.00E+00 _

Adult Total Body mrem 1ISOTOPE BONE LIVER TOT BODY THYROID KIDNEY LUNG GI-LLJ H-3 0.OOE+0O 1.93E-07 1.93E-07 1.93E-07 1.93E-07 1.93E-07 1.93E-07 MN-54 O.OOE+OO O.OOE+OO O.OOE+0O O.OOE+OO O.OOE+O0 O.OOE+00 O.OOE+O0 FE-55 O.OOE+O0 O.OOE+OO O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+Oo CO-58 O.OOE+O0 O.OOE+0O O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+00 C0-60 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 NI-63 O.OOE+00 O.OOE+OO O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+O0 SR-90 O.OOE+00 O.OOE+0O O.OOE+O0 O.OOE+0O O.OOE+O0 O.OOE+0O O.OOE+0O SB-125 O.OOE+0O O.OOE+0O O.OOE+0O O.OOE+O0 O.OOE+O0 O.OOE+00 O.OOE+00 CS-134 O.OOE+O0 O.OOE+O0 O.OOE+OO O.OOE+00 O.OOE+O0 O.OOE+OO O.OOE+00 CS-1 37 O.OOE+0O O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+OO O.OOE+OO O.OOE+OO C0-57 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+O0 O.OOE+O0 O.OOE+00 O.OOE+00 TOTAL O.OOE+0O 1.93E-07 1.93E-07 1.93E-07 1.93E-07 1.93E-07 1.93E-07 Page 10

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Table 6 IP2 Tritium Released to Hudson River via Bedrock Pathway, 2005 (from the area near IP2 transformer yard, as determined by samples from Monitoring Wells - Area 2)

Release Ratel 1.64E+07 mi/day or 4.32E+03 gpd or 3.0OE+OO gpm Duration of Release, in days l 365 Waste vol released = 1.58E+06 gal Dilution flow I 1.11E+05 I gpm Diltution vol released = 5.83E+10 gal Dil Factor 2.70E-05 (dilution data per IP-CHM-05-042 from Dr. John Hamawi)

I Activity 10CFR20 PRE f POST 1 POST MICRO-ISOTOPE_l Released EC*10 DILUTION DILUTION l DILUTION CURIES

_ uCi/mi conc limit CONC/MPCG uCi/mi CONC/MPC RELEASED H-3 2.OOE-04 1.OOE-02 2.OOE-02 5.41 E-09 5.41 E-07 1.19E+06 MN-54 -- I 3.OOE-04 O.OOE+00 O.OOE+00 O.OOE+OO O.QOE+00 Q.OOE+OO 0.OOE+QO

-- 1.-, - I - Q.OOE+00

.- ,-,..a. FE-55 4: ---,FE-55 1.OOE-03 O.OOE+00 O.OOE+OO O.OOE+00',", """ Q.00E4-00 C0-58 2.OOE-04 O.OOE+O0 O.OOE+O0 O.OOE+O0 O.OOE+OO C0-60 3.OOE-05 O.OOE+00 O.OOE+0O O.OOE+OO O.OOE+OO Nl-63 1.00E-03 O.OOE+0O O.OOE+00 O.OOE+00 O.OOE+O0 SR-90 _ 5.OOE-06 O.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 SB-125 3.OOE-04 O.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 CS-1 34 9.OOE-06 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 CS-137 1.OOE-05 O.OOE+00 O.OOE+0O O.OOE+O0 0.OOE+O0 C0-57 6.OOE-04 O.OOE+OO O.OOE+O0 O.OOE+00 O.OOE+00 TOTAL 2.OOE-04 7 n/a  ; 2.OOE-02 5.41 E-09 5.41 E-07 1.1 9E+06 NUREG 0133 "Applicable Factor" for Near Field Dilution = 1.00E+OO Adult Total Body mremr ISOTOPE BONE LIVER TOT BODY THYROID KIDNEY LUNG GI-LLI H-3 O.OOE+00 1.34E-05 1.34E-05 1.34E-05 1.34E-05 1.34E-05 1.34E-05 MN-54 O.OOE+00 O.OOE+OO O.OOE+O0 O.OOE+O0 O.OOE+OO O.OOE+00 O.OOE+00 FE-55 O.OOE+O0 O.OOE+OO O.OOE+O0 O.OOE+0O O.OOE+0O O.OOE+0O O.OOE+00 C0-58 O.OOE+00 O.OOE+OO 0.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 O.OOE+00 C0-60 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 NI-63 O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 SR-90 O.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 O.OOE+0 O.OOE+00 O.OOE+00 SB-125 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 CS-134 O.OOE+OO O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+O0 CS-137 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 C0-57 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL O.OOE+00 1.34E-05 1.34E-05 1.34E-05 1.34E-05 1.34E-05 1.34E-05 Page 11

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Table 7 IP2 Tritium and Sr-90 Released to Hudson River via Bedrock Pathway, 2005 (from the area near IP2 transformer yard, as determined by samples from Monitoring Wells - Area 2)

Release Ratel 1.64E+07 Iml/day or 4.32E+03 gpd or 3.OOE+00 gpm Duration of Release, in days 1 365 1 Waste vol released = 1.58E+06 gal Dilution flow I 1.11E+05 I gpm Diltution vol released = 5.83E+10 gal Dii Factor 2.70E-05 (dilution data per IP-CHM-05-042 from Dr. John Hamawi)

Activity 10CFR20 PRE POST j POST MICRO-ISOTOPE Released EC*10 DILUTION DILUTION DILUTION CURIES

__ l uCi/ml conc limit CONCGMPC uCi/ml CONC/MPC RELEASEDl H-3 2.OOE-04 1.OOE-02 2.OOE-02 5.41 E-09 5.41 E-07 1.19E+06 MN-54 l 3.OOE-04 0.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 T 1.OOE-03 O.OOE+00 0.OOE+00 0.OOE+00 0.OOE+OG

_________ 2.00E-04 0.OOE+00 0.OOE+00 0.OOE+00 O.OOE+00 C0-60 3.OOE-05 O.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 NI-63 1.OOE-03 O.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 SR-90 5.OOE-09 5.OOE-06 1.OOE-03 1.35E-1 3 2.70E-08 2.98E+01 SB-1 25 3.OOE-04 O.OOE+00 0.OOE+00 0.OOE+00 0.00E+00 CS-134 9.OOE-06 0.OOE+00 O.OOE+00 0.OOE+00 0.OOE+00 CS-137 1.OOE-05 0.OOE+00 0.OOE+00 O.OOE+00 0.00E+00 C0-57 6.OOE-04 0.00E+00 0.OOE+00 0.OOE+00 0.OOE+00 TOTAL 2.OOE-04 nra 2.1OE-02 5.41 E-09 5.68E-07 1.19E+06 NUREG 0133 "Applicable Factor" for Near Fielcl Dilution = 1.OOE+00 Adult Total Body mremr ISOTOPE BONE LIVER TOT BODY THYROID KIDNEY LUNG GI-LLI H-3 O.OOE+00 1.34E-05 1.34E-05 1.34E-05 1.34E-05 1.34E-05 1.34E-05 MN-54 O.OOE+00 0.OOE+o0 0.OOE+00 0.00E+00 0.OOE+00 0.00E+00 0.00E+00 FE-55 O.OOE+00 0.00E+00 O.OOE+00 O.OOE+00 O.OOE+00 0.00E+00 O.OOE+00 C0-58 0.OOE+00 0.00E+00 0.00E+00 0.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 C0-60 0.OOE+00 0.00E+00 0.OOE+00 0.OOE+00 0.00E+00 O.OOE+00 0.OOE+00 NI-63 O.OOE+00 0.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 0.OOE+00 O.OOE+00 SR-90 7.48E-04 o.OOE+00 1.83E-04 O.OOE+00 0.00E+00 0.00E+00 2.15E-05 SB-125 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.00E+00 0.00E+00 0.OOE+00 CS-1 34 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 CS-1 37 0.00E+00 0.00E+00 O.OOE+00 O.OOE+00 O.OOE+00 0.00E+00 O.OOE+00 C0-57 0.OOE+00 0.00E+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.0OE+00 TOTAL 7.48E-04 1.34E-05 1.97E-04 1.34E-05 1.34E-05 1.34E-05 3.49E-05 Page 12

IPEC Water Mass Balance and Dose Calculation from Groundwater and Storm Water Figure 3 Precipitation (inches) at India ioint 2000 - 2005 12 10 Average 2.92 inches per month l _

ZX2>sx S :.l .,i>> -V - gi .S -

o O O CO CO U) UO U) 0 :0 cococ C 0 0 ,.90 :,

co 0

~ ~

Page 13

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