Text

Annual Radiological Environ Operating Rept for 1991,Rept 8
	ML20095H869
Person / Time
Site:	Limerick
Issue date:	12/31/1991
From:	Leitch G; PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
	NUDOCS 9204300310
	Download: ML20095H869 (75)
	v • d • e

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3923023260 T.S.6.9.1.7 i.

1 . . . .

PHILADELPlHA ELECTRIC COMI%NY LIMERICK GENERATING STATION April 30, 1992 P. O. BOX 2300 Docket Nos. 50-352 Pui isiihVN, PA 19464-0920 50-353 (215) m-1200, EXT. VXX) License Nos. NPP-39 NPF-85 GRAHAM M. LERCH VCE /WESDEAT uutacx atsman:n swxw U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

Limerick Generating Station Units 1 and 2 1991 Annual Radiological Environmental Operating Report Gentlemen:

In Eccordance with tne requirements of the Limerick Generating Station (LGS) Unit 1 & 2 Technical Specifications (TS) Section 6.9.1.7, this letter submits the 1991 Annual Radiological Environmental Operating Report No. 8. This report provides the information delineated in TS Sect;on 6.9.1.7, including a summary of the Radiological Environmental Monitoring Program (REMP).

In assessing the data collected for the Radiological Environmental Monitoring Program we concluded that the operation of IGS had no adverse impact on tre environment. The data collected indicated trace concentrations of Cesium-137 in the sediment consistent with levels observed in preoperational years.

Goat milk samples showed small concentrations of Cs-137. The levels observed were attributed to fallout f rc,m Chernobyl .

The 1991 Radiological Environmental Monitoring Program confirmed that the If;S environmental effects f rc .n radioactive releases were well below LGS Technical Specification and other applicable rev latory limits.

If you W e any questions, please do not hesitate to contact us.

Very traly/9purs, f /; i Attachment KWM/cmb

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cc: T. T. Martin, Administrator, Region I, USNRC T. J. Kenny, USNRC Senior Resident Inspector rew

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.[ LIMERICK GENERATING STATION l'

a UNITS 1 and 2 1

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT a

Prepared by PHILADELPHIA ELECTRIC COMPANY L

Nuclear Group Headquarters 955 Chesterbrook Blvd.

.,4 Wayne, PA 19087-5691

.(

Radidogrca' Analyses Performed

. :4 B'i f, TELEDYNE ISOTOPES-

._, 50 Van Buren Avenue

. Westwood, NJ 07675

.And PUBLIC SERVICE. ELECTRIC AND GAS COMPANY Research and Testing Laboratory 200 Boyden Avenue l _

.Maplewood, NJ 07040 l

l 3%%wA

3923023260 DOCKET N0.: 50-352 50-353 I

I LIMERICK GENERATING STATION Units 1 and 2 Annual Radiological Environmental Operating Report _

Report #8 1 January through 31 December 1991 I

I Prepared By Philadelphia Electric Company Nuclear Group Headcuarters I. 955-65 Chesterbroo( Blvd.

Wayne, PA 19087-5691 Radiological Analyses Performed By TELEDYNE IS0 TOPES I 50 Van Buren Avenue Westwood, NJ 07675 And Public Service Electric and Gas Company Research and Testing Laboratory I- 200 Boyden Avenue Maplewood, NJ C7040 I

May 1992

I I TABLE OF CONTENTS I

1. Sumary and Concl u s i on s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 l

II. Introduction .............................................. 2 A. Objectives............................................. 2 B. I mpl eme n t a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 l l

III. Program Description........................................ 4 A. S ampl e C ol l e c t i on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 B. Data Interpretation.................................... 5 C. Program Exceptions..................................... 6 D. Program Changes......-.................................. 8 IV. Results and Discussions................................. .. 9 A. Aquatic Environment.................................... 9

1. Surface Water...................................... 9

2. Drinking Water..................................... 9

3. Fish............................................... 10

4. Sediment........................................... 10 I B. Atmospheric Environment................................ 11

1. Airborne........................................... I1

a. Air Particulates ............................... 11

b. Air Iodine ..................................... 12

2. Terrestrial ........................................ 12

a. Hilk........................................... 12 C. Amb i e n t G ama Rad i at i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 i V. References................................................. 14 I

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I l I Appendix A - Radiological Environmental Monitoring Report Sumary Appendix B - Sample Designation and Locations Appendix C - Data Tables and Figures - Primary Laboratory Appendix D - Data Tables and Figures - QC Laboratory Anpendix E - Synopsis of Analytical Procedures Appendix F - Quality Control - EPA Intercomparison Program Appendix G - LGS Surveys I

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o I l I 1. Summary and Conclusions I This report on the Radiological Environmental Monitoring Program conducted for the Limerick Generating Station by Philadelphia Electric Company covers the period 1 January 1991 through 31 December 1991. During that time period, 2475 i

analyses were performed on 2126 samples, I Surface and drinking (potable) water samples were analyzed for concentrations of i

I gross beta (soluble and insoluble fractions), tritium, and gama emitting i nuclides. Activities detected were consistent with those observed in other

.I years.

Fish (predator and l,ottom feeder) and sediment samples were analyzed for I concentrations of gama emitting nuclides. No Station related fission products were detected in fish samples. Sediment samples collected below the discharge had Cs-137 concentrations consistent with levels observed in the preoperational l years. One silt sample from below the discharge had a measurable activity of Mn-

54. This activity was slightly above the detection capabilities of the counting system. Activities found contributed less than 1% af the 10CFR50 Appendix I I design objective. Other nuclides found were consistent with those in other years.

Air particulate samples were analyzed for concentrations of gross beta and gamma I emitting nuclides. Concentrations detected were consistent with those observed in other years.

High sensitivity 1-131 analyses were performed on weekly air samples. All results were less than the minimum detectable level.

Cow and goat milk samples were analyzed for concentrations of I-131 and gamma I emitting nuclides. Iodine-131 results detected were below the minimum detectable level. Concentrations of K-40 were consistent with those observed in other years. Trace amounts of Cs-237 were found in some milk samples. The activity I was considered attributable to fallout from Chernobyl.

Environmental gamma radiation measurements were made monthly and quarterly using thermoluminescent dosimeters. Levels detected were consistent with those observed in other years.

In assessing all the data gathered for this report and comparing these results I with preoperational data, it was evident that, the operation of LGS had no adverse impact on the environment.

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I l II. Introduction ,

The Limerick Generating Station (LGS), consisting of two 1055 MWe boiling water E' reactors cwned and operated by Philadelphia Electric Company (PEco), is located g adjacent to the Schuylkill River in Montgomery County, Pennsylvania. Unit No.

I went critical on 22 December 1984. Unit No. 2 went critical on 11 August 1989. The site is located in Piedmont countryside, transversed by numerous valleys containing small tributaries which feed into the Schuylkill River. On the eastern river bank elevation rises from approximately 110 to 300 feet mean l

sea level (MSL). On the western river bank elevation rises approximately 50 feet E MSL to the western site boundary. 5 A Radiological Environmental Monitoring Program (REMP) for LGS was initiated in E 1971. Review of the 1971 through 1977 REMP data resulted in the modification of g the program to comply with changes in the Environmental Report Operating License Stage (ER0L) and the Branch Technical Position Paper (Rev. 1, 1979). The preoperational period for most media covers the periods 1 January 1982 through 21 December 1984 and was summarized in a separate report. TE $ eport covers those analyses performed by Teledyne Isotopes (TI) on samples . .ected during the period 1 January 1991 through 31 December 1991.

Public Service Electric and Gas Company (PSE&G) conducted a Quality Control (QC) program for surface and drinking water, air particulates and milk samples.

I A. Objectives The objectives of the Radiological Environmental Monitoring Program

are:

1. To provide data on measurable levels of radiation and radioactive materials in the site environs.

2. To evaluate the relationship between quantities of radioactive I material released from the plant and resultant radiation doses E to individuals from principal pathways of exposure.

B. Implementation Implementation of the stated objectives is accomplished by 3 identifying significant exposure pathways, establishing baseline g radiologittl data of media within those pathways, and continuously monitoring those media before and during Station operation to assess Station effects (if any) on man and the environment.

In order to achieve the stated objectives, the current program includes the following analyses on samples collected l 1. Concentrations of beta emitters in surface and drinking (potable) water, and air particulates.

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2. Concentrations of gamma emitters in surface and drinking I (potable) water, air particulates, milk, fish, and sediment.

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3. Concentrations of tritium in surface and drinking (potable) water.

Concentrations of I-131 in air and milk.

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5. Ambient gamma radiation levels at various site environs.

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I III. Program Description A. Sample Collection Samples for the LGS REMP were collected for Philadelphia Electric Company by RMC Environmental Services, Inc. (RMC). This section describes the collection methods used by RMC to obtain environmental samples for the LGS REMP in 1991. l; l

Aouatic Environment The aquatic environment was examined by analyzing samples of surface water, drinking water, fish, and sediment. Two gallon water samples a were collected monthly from continuous samplers located at three g surface water locations (10F2,1381, and 2451) and five drinking water locations (13H2, 15F4, 15F7, 16C2, and 28F3). Control locations were 10F2, 24S1, and 28F3. All containers used were new E unused plastic bottles, which were rinsed at least twice with source W water prior to collection. Fish samples comprising the flesh of two groups, catfish / bullhead (bottom feeder) and sunfish (predator), g were collected semiannually at three locations: 16C5 and 20S1 g (indicator) and 29C1 (control). Sediment samples composed of recently deposited substrate were collected at three locations semiannually: 1682 and 16C4 (indicator) and 33A2 (control).

Atmosoheric Environment l

The atmospheric environment was examined by analyzing samples of air particulate, airborne iodine, and milk. Air particulate were collected and analyzed weekly at seventeen locations (2B1, 6Cl, 9Cl, g 10S3, 11S1, 13C1, 13H4, 1451, 15D1, 1731, 20D1, 22G1, 26B1, 29B1, g 31D1, 34S2, and 35B1). Control locations were 13H4 and 22Gl.

Airborne iodine samples were collected and analyzed weekly from five locations, (10S3,11S1,13C1,13H4, and 14S1). Control location was E 13H4. Air particulate and airborne iodine samples were obtained E using a vacuum simpler, glass fiber and charcoal filters, respectively. The filters were replaced weekly and sent to the E laboratory for analysis. The vacuum samplers were run continuously 5 at approximately I cubic foot per minute.

Milk samples were collected biweekly at five locations (1081,1981, 2181, 22F1, and 25B1) during April through November, and monthly l during December through March and quarterly at four locations (36El, 9G1, 18C1, and 22Cl). . Locations 9G1 and 22F1 were controls. l Samples were collected in new unused two gallon plastic bottles from u the bulk tank at each location, refrigerated, and shipped promptly to the laboratory. No preservative wss added.

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I I Ambient Gamma Radiation Direct radiation measurements were made using thermoluminescent

,I dosimeters (TLD) consisting of calcium sulfate (CaSO4 ) doped with dysprosium (Dy). The TLD locations were placed on and around the LGS site using a "thrae ring concept" consisting of:

A site boundary ring consisting of sixteen locations (36S2, 351, SS1, 7S1, 10S3, 11S1, 14S1, 16S2, 1851, 21S1, 23S2, 25S1, 26S3, I 29S1, 3251 and 34S2) near and within the site perimeter representing fencepost doses (i.e., at locations where the doses will be potentially greater than maximum annual off-site doses) from LGS release. A middle ring consisting of twenty-seven I locations (2B1, 2El, 4El, 6Cl, 7El, 9C1, IDEl, 10F3, 13C1, 13El, 1501, 16F1, 1781, 1901, 2001, 20F1, 24D), 2501, 26B1, 28D2, 2981, 29El, 31DI, 3102, 34El, 35B1 and 35F1) extending to approximately I 5 miles from the site designed to measure possible exposures to close-in population. And an outer ring consisting of five locations (5H1, 13H4, 18G1, 22G1 and 32GI) extending from I approximately 12 to 30 miles from the site and considered to be unaffer.ted by LGS releases.

The specific TLD locations were determined by the following I criteria:

1. The presence of relatively dense population;

2. Site meteorological data taking into account distance and elevation for each of the 16-22 1/2 degree sectors around the site, where estimated annual dose from LGS, if any, would be l I most significant;

3. On hills free from local obstructions and within sight of the j vents (where practical);

4. And near the closest dwelling to the vents in the prevailing downwind direction.

Two TLDs - each comprised of four thermoluminescent phosphors enclosed in plastic - were placed at each location in a PVC conduit I located approximately three feet above ground level. One TLD was exchanged monthly and the other quarterly and sent to the laboratory for ' analysis.

I B. Data Interpretation l

l-I The radiological and direct radiation data collected prior to LGS becoming operational was used as a baseline with which this operational data will be compared. For the purpose of this report, LGS was considered operational at initial criticality. In addition I data will be compared to previous years' operational data for consistency and trending. Several factors are important in the interpretation of the data. These factors are discussed here to

,_l avoid undue repetition in the discussion of the results.

I The lower limit of- detection (LLD) was defined as the smallest concentration of radioactive material in a sample that wmil d yield a net count (above background) that would be detected with only a 5% 3 probability of falsely concluding that a blank observation 5 represents a "real" signal. The LLD was intended as a before the fact estimate of a system (including instrumentation, procedure and sample type) and not as an after the fact criteria for the presence of activity. All analyses were designed to achieve the required LGS l detection capabilities for environmental sample analysis. For a more detailed description cf the results calculation, see E Appendix E. R The minimum dr.tectable level (MDL) for Teledyne Isotopes was defined 3 as the 2 sigma counting statistic and for PSE&G the MDL was defined 3 as the 1.96 sigma. Both definitions represents the range of values into which 95% of repeated counts of the same aliquot would fall.

For the analyses gross beta, tritium, and iodine-131 (when analyzed by beta counting), the activity was reported plus/minus the two sigma counting statistic. This includes calculated negative l

activity., For the analyses gamma and iodine-131 (when analyzed by g gamma spectroscopy), an activity that was greater than or equal to 3 the MDL was reported as " activity plus/minus the two sigma counting statistic". When an activity was less than the MDL, the result was reported as "< the MDL value".

Data received from the laboratory were reported using the convention l of rounding the result to the same number of significant places as a the first significant digit in the error term (i.e., 3.62 i 1.23 l

rounds to 411;10.9310.96 rounds to 10.9 1 1.0;-0.0110.1 3 rounds to -0.0 1 0.1). Results for each type of sable were grouped g i according to the analyses performed. For gamma analyses, at least those nuclides required for each sample media and nuclides which had a positive occurrence were reported. Means and standard deviations E of these results were calculated. These standard deviations E represent the variability of measured results for different samples rather than single analysis uncertainty. For these calculations, E all results reported as < MDL were considered to be at the MDL. W C. Program Exceptions For 1991 the LGS REMP had a sample recovery rate of better than 99%.

The exceptions to this program are listed below:

1. Air particulate samples were not collected from locations 6Cl l

from week #34 through week #51 due to on going construction at 3 the Limerick Airport, a

2. The air particulate filters were not available from location a 1501 from week #7 and from location 13C1 from week #29 due to 5 sample collection errors.

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I 3. Air particulate samples were not collected from location 22G1 from week #22 due to pump failure.

The specific dates for the above weeks may be found in Table C-IX.1, Appendix C or Table D-IV.1, Appendix D.

4. Surface water samples collected at location 24S1 (LGS Intake) were composites of weekly grabs due to equipment problems during the following dates: 8/13/91, 12/18/91, and 12/30/91.

I 5. Surface water samples collected at location 1381 (Vincent Dam) were composites of weekly grabs due to equipment problems l

I during the following dates: 1/03/91, 1/11/91, 1/17/91, 1/22/91, 1/28/91, 12/12/91, and 12/18/91.

1/14/91, i

6. Surface water samples collected at location 10F2 (Perkiomen l Pumping Station) were composites of weekly grabs due to equipment problems during the following dates: 1/3/91, 1/11/91, 1/14/91, 1/22/91, 1/28/91, 2/4/91, 2/11/91, 2/22/91, 3/4/91, 3/22/91, 3/25/91, 4/3/91. 4/8/91, 4/15/91, 4/23/91, 5/9/91, 5/13/91, 5/24/91, 6/5/91, 6/18/91, 8/27/91, 9/6/91, 9/12/90,9/20/91,and12/18/91.

11. Drinking water samples collected at location 15F7 (Phoenixville Water Works) were composites of weekly grabs due to equipment problems during the following dates: 10/4/91.

12. Drinking water samples collected at location 28F3 (Pottstown Water Authority) were composites of weekly grabs due to equipment problems during the following dates: 3/14/91.

13. Drinking water samples collected at location 13H2 (Belmont Water Works) were composites of daily grabs due to plant I maintenance during the following dates:

5/21/91,-5/28/91, and 8/27/91.

4/8/91, 4/15/91, I 14. Drinking water samples collected at location 16C2 (Citizens Utilities) were composites of weekly grabs as a result of power shutdown at the sampling location during the following dates:

3/14/91 to 12/31/91.

15. Required LLD sensitivity v. lues for Ba-140 (60 pCi/1) and La-

'440 (15 pCi/1) were not achieved for Surface and Drinking water

,l samples collected for the month of November 1991 due to a mistake on the sample collection data sheet as supplied by the rample collector. The error was not discovered until several half-lives for these nuclides had passed.

l Each program exception was reviewed to understand the causes of the j program exception. Sampling and maintenance errors were reviewed l with the personnel involved to prevent recurrence. Occasional l equipment breakdowns and power outages were unavoidable. The overall sample recovery rate indicates that the appropriate l -_

procedures and equipment are in place to assure reliable program implementation.

The problems observed at location 16C2 (Citizens Utilities) will be corrected either when Citizens completes a proposed expansion of their facilities - or when power is brought back to our sampling location.

D. 1991 Program Changes Public Service Elet.tric & Gas, Co. became the QC l aboratory beginning with sr.mples collected in May.

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I IV.- Results and Discussion A. Aquatic Environment

1. Surfare Water Samples were taken from a continuous sampler at three locations (10F2, 13B1, and 24S1) on a monthly schedule. Of these locations, only 1381 could be affected by Station discharges.

The following analyses were performed.

Gr9M Beta Sainples from all locations were analyzed for concentrations of gross beta in the soluble and insoluble fractions (Tables C-I.1 and C-1.2, Appendix C). Detectable activity was observed in I the soluble and insoluble fraction of the surface water samples; the values were consistent with previous years (Figures C-1 and C-2, Appendix C) and ranged from 2.4 to 9 pCi/l for the soluble fraction and from 0 to 4.3 pCi/l for the insoluble fraction. Similar activity levels were observed between indicator and control louticos Tor the solchle and insoluble fractions.

I Tritium I Samples from all locations were analyzed for tritiun activity (Table C-I.3, Appendix C). Positive tritium activity was observed at each sample location and values ranged from -30 to 100 pCi/1. Similar activity levels were observed between I indicator and control locations for the soluble and insoluble fractions.

l Gamma Snectrometry Samples from all locations were analyzed for gamma emitting I nuclides (Table C-I.4, Appendix C). With the exception of naturally occurring K-40, all nuclides searched for were below the minimum detectable level.

2. Drinkino (Potable) Water Monthly samples were taken from five locations (13H2,15F4, 15F7, 16C2 and 28F3) and were collected from continuous water

-l samplers, Four locations (13H2,15F4,15F7 and 16C2) could be affected by Station discharges. The following analyses were performed:

Gross Beta Samples from all locations were analyzed for concentrations of gross beta in the soluble and insoluble fractions (Tables C-II.1 and C-II.2, Appendix C). The values ranged from 1.6 to l 10 pCi/1 for the soluble fraction and from .2 to 9 pCi/l for I -'-

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I the insoluble fraction. Concentrations detected in both fractions were con >1 stent with those observed in previous years (Figures C-3 and C-4, Appendix C).

Tritium Samples from all were analyzed for tritium activity (Table C-II.3, Appendix C). Positive tritium activity w4s observed at each sample location. The measurements ranged from -20 to 140 l

pCi/l. Similar activity levels were observed at all locations.

Epma Spectrometry Samples from all locations were analyzed for gama emitting nuclides (Table C-II.4, Appendix C). With the exception of naturally occurring K-40, all nuclides searched for were below 3.

the minimum detectable level.

Fish l

Fish samples comprised of catfish / bullhead (bottom feeder) and redbteast/pumpkinseed (predator) were collected at three locations (16C5, 20S1 and 29C1) semiannually. Two locations (16C5 and 20S1) could be affected by Station discharges. The following analysis was performed: l Gamma Spectrometry The edible pertion of fish samples from all three location , was analyzed for gama emitting nuclides (Table C-III.1, Appendix g C). With the exception of naturally occurring K-40, all g nuclides searched for were below the minimum detectable level.

Historical levels of Cs-137 are shown in Figure C-5, Appendix C.

4. Sediment Aquatic sediment samples 'were collected. at three locations (1682,16C4 and 33A2) semiannually. Of these locations, two (16B2 and 16C4) could be affected by Station discharge. The following analysis was performed:

Gamma Spectrometry Sediment samples from all three locations were analyzed for gama emitting nuclides (Table C-IV.1, Appendix C). Nuclides detected were naturally occurring Be-7, K-40, Ra-226 and 3 Th-228,- and fission products Mn-54 and Cs-137. The nuclides E Th-228 and Ra-226 comonly occur in sediment from daughter decay of natural uranium.

One sample from the downstream sampling location 1682 showed I positive Mn-54 activity of 0.05 1 0.03 pCi/g (dry). This result was recorded at the detection capabilities of the g

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I counting system and therefore, may be a false positive.

I Concentrations of Cs-137 were found in sediment samples from both indicator locations and was below MDL at the control location.. Location 16C4 had the highest average concentration of .29 pCi/g dry. The activity detected was consistent with I those observed in the preoperational years (Fi,ure C-6, Appendix C). The activity of Cs-137, which commonly occurs in sediment from worldwide fallout, was not attributed to LGS releases because Cs-134 was not also found.

B. Atmospheric Environment

1. tirborne l a. Air Particulates Continuous air particulate samples were collected from I seventeen locations on a weekly basis.

locations are separated into three groups:

The seventeen Group I represents locations within the LGS site boundary (10S3, 11S1,14S1 and 34S2), Group II represents locations near the I LGS site (2B1, 6Cl, 9C1,13C1,15D1,1781, 20D1, 26B1, 29B1, 31D1, 35B1), and Group III represents control 1ccations at remote distances from LGS (13H4 and 22G1). The following analyses were performed:

ECass Beta Weekly samples were analyzed for concentrations of beta emitters (Table C-V.1, Appendix C).

l Detectable gross beta activity was observed at :.11 locations. Comparison of results among the three groups aid in determining the effects, i f any, resulting from the I operation of LGS. The results from thg On-Site locations (Group I)3 ranged from 8 to 30 E-3 pCi/m with a mean of 17 E-3 pCi/m . The results from the Intermediate gistance I locations (GroupII)rgngedfrom0to31E-3pCi/m with a mean of 16 E-3 pCi/m. The results from the Distant 3

locations (Group II ranged from 6 to 31 E-3 pC1/m with a mean of 17 E-3 pCi/m(). Comparison of the weekly mean values l indicate no notable differences among the three groups (Figure C-7, Appendix C). Comparison of the 1991 air particulate data with previous years data suggest no effects from the operation of LGS (Figure C-8, Appendix C).

l Gamma Soectrometry Weekly samples from five locations (10S3,1151,14S1,13Cl, and 13H4) were composited and analyzed quarterly for gamma-emitting nuclides (Table C-V.2, Appendix C).

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Naturally occurring Be-7 due to cosmic ray activity was g-l

I detected in all samples. These values ranged from 38 to 71 3

E-3pCi/m. K-40, also naturally occurring, was detected in 7 of 20 samp}es. The positive K-40 values ranged from 5 to E 13 E-3 pCi/m . All other nuclides searched for were below E the minimum detectable level. No significant difference in activity was observed between the control and indicator locations. l

b. Airborne Iodine Continuous air samples were collected from five (1053,11S1, 14S1, 13C1, and 13H4) locations and analyzed weekly for I-131. Results of the I-131 analysis are found in Table g C-VI.1, Appendix C. All results were less than the minimum g detectable level.

2. Terrestrial l

a. tillk Samples were taken from five locations (10B1,19B1, 21B1, 22F1 and 25B1) biweekly during the grazing season (April-November) and monthly at other times. Samples from a four additional locations (9G1,18C1, 22Cl and 36E1) were g taken quarterly. The following analyses were performed:

Iodine-131 All milk samples from all locations were analyzed for concentrations of I-131 (Table C-VII.1, Appendix C). Values E ranged from .2 to .06 pCi/1. All results were below the g minimum detectable level.

Gamma Soectrometry Each milk sample from locations 1081, 1981, 21B1, 22F1 and 25B1 were analyzed for concentrations of gamma emitting B nuclides (Table C-VII.2, Appendix C). E With the exception of Cs-137 and K-40, all nuclides searched a for were below the minimum detectable level. The values for g K-40 ranged from 1000 to 1700 pCi/1.

Positive concentrations of Cs-137 were found ti.11 of 21 gott milk (10B1) samples ranging from 4 to 8 pCi/1.

Cesium-137 was also found in 6 of 84 cow milk samples. The l

positive values ranged from 3 to 5 pCi/1. This activity was 3 attributed to residual fallout from Chernobyl (Figure C-9, 3 Appendix C).

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I I C. Ambient Gama Radiation I Ambient gama radiation levels were measured utilizing CaSO 4:Dy thermoluminescent dosimeters. Forty-eight TLD locations were established around the site in a three ring concept for comparison purposes: an " inner ring" of sixteen locations around the site I boundary; a " middle ring" of twenty-seven locations within a ten mile radius of the site; and an " outer ring" of five locations at distances outside the ten mile radius of the site. Results of TLD g measurements are listed in Tables C-VIII.1 to C-VIII.4, Appendix C.

Most of the TLD measurements were below 10 mrad /std. month, with a range of 1.2 to 10.7 mR/std. month for the monthly TLDs and from 3.9 I to 8.0 mR/std. month for the quarterly TLDs. The value of 1.2 mR/std. month was recorded at control location 13H4 in November.

This value is unusually low and as a result is suspect. A companion I TLD used in the Peach Bottom REMP recorded a normal reading of 4.6 mR/ std. month. Levels measured were consistent with those observed in previous years (Figure C-10, Appendix C).

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V. References

1. Environmental Report Operating License Stagc, Limerick Generating B Station, Units 1 and 2. Volumes 1-5 Philadelphia Electric Company. El,

2. Branch Technical Position Paper, Regulatory Guide 4.8, Revision 1, l November 1979. l

3. Preoperational Radiological Environmental Monitoring Program Report, Limerick Generating Station Units 1 and 2,1 January 1982 through 21 Ei December 1984, Teledyne Isotopes and Radiation Management El Corporation. ,

4. Radiological Environmental Operating Report No. 2, Limerick Generating Station Units 1 and 2, 1 January through 31 December 1985, Philadelphia Electric Company, analyses by Teledyne Isotopes.

5. Radiological Environmental Operating Report No. 3, Limerick Generating Station Units 1 and 2,1 January through 31 December 1986, Philadelphia Electric Company, analyses by Teledyna Isotopes.

6. Rcdiological Environmental Operating Report No. 4, Limerick Generating Station Units 1 and 2, 1 January through 31 December 1987, Philadelphia Electric Company, analyses by Teledyne Isotopes.

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7. Radiological Environmental Operating Report No. Limerick Generating Station Units 1 and 2, 1 January through 31 December E 1988, Philadelphia Electric Company, analyses by Tcledyne Isotopes. E

8. Radiological Environmental Operating Report No. 6, Limerick E Generating Station Units 1 and 2, 1 January through 31 December g 1989, Philadelphia Electric Company, analyses by Teledyne Isotopes.

9. Radio'ogical Environmental Operating Report No, 7, Limerick I Generating Station Units 1 and 2, 1 January through 31 December E 1990, Philadelphia Electric Company, analyses by Teledyne Isotopes.

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I RADIOLOGICAL ENVIRONMENTAL HONITORING REPORT

SUMMARY

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M M M M M f M M M- M M W M M M- M M APPENDIX A RADIOLUGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

DOCKET N3.: 50-352 & 50-353 NAME OF FACILITY: LIMERICK GENERATING STATION LOCATION OF FACILITY: MONTGOMERY COUNTY, PA REPO# TING PERICO: 1991

)

IMDICATOR CONTROL LOCAfl04 WITN HIGHEST j ANNUAL MEAN NUMBER REQUIRED LOCATIONS LOCATIONS MEAN staff 0N # OF NONROUTINE NUM3ER OF LOWER LIMIT MEAN MEAN MEDitM OR TTPE OF NAME REPORTED ANALYSES ANALYSES OF DETECTION (F) (F) (F)

PATHWAY SAMPLED RANGE DISTANCE & DlfrECTION MEASUREMENTS PERFORMED (LLD) RAkGE RANGE l..................... ............. ......... ............ ............. ............. .............

(tMIT OF MEASUR5 MENT) PERFORMED 5.5 10F2 (CONTROL) 0 CROSS BETA 36 4 5.0 5.1 l SURFACE WATER PERK!(MEN PLHPING STATION SOLUBLE (12/12) (24/24) (12/12) !

(PCI/ LITER) (2.4-9.11 (2.4-9.1) 7.1 MILES E OF SITE (2.5-7.5) 0.8 10F2 (CONTROL) 0 GROSS BETA 36 4 0.6 0.6 INSOLUSLE (12/12) (24/24) (12/12) PERKIOMEN PUMPINF STATION (0.1-1.2) (0.0-4.31 (0.1-4.3) 7.1 MILES E OF SITE l 70 1381 (INotCAT0e) 0 H-3 AQUE0JS 12 2000 70 40 LIO. SCINT. (4/4) (8/8) (4/4) VINCENT DAM (50 00) (-30-100) (50-90) 1.8 MILES ESE OF $1TE W/ENR l

GAmA 36 0 N/A 10 11 16 10F2 (CONTRM )

E-40 (4/12) (4/24) (1/12) PERK 10 MEN PUMP!NG STATION (7-14) (8-16) (16-16) 7.1 MILES E OF SITE

< LLD 0 MW-54 15 < LLD < LLD

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< LLD 0 CS-137 18 < LLD < iLD 0 60 < LLD < LLD < L *..D BA-140 0 15 < LLD < LLD < LLD LA-140

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l MEAN AND RANGE BASED UPON DETECTA8tE MEASUREMENTS ONLY.

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS IN01CATED IN PARENTNE<ES (T).

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APPEN0!X A RADIOLOGICAL ENVIRONMENTAL MONITORIsiG PROGRAM ANNUAL StR94ARY NAME OF FACILITY: LIM CK GENERATING STAfl04 DottET No.: 50-352 & 50-353 LOCATION OF FACILITY: MONTIKMERf COUNTY, PA REPORTING PERICO 1991 INDICATOR CONTROL LOL TION WITH HIGHEST REQUIRED LOCATIONS LOCATIONS ANNUAL MEAN WJMBER MEDILM OR . TYPE OF WUMBER OF LOWER LIMIT MEAN MEAN MEAN STATION # OF NONROUTINE PATHVAf SAMPLED ANALYSES ANALTSES OF DETECTION (F) (F) (F) NAME REPORTED (UNIT OF MEASUREMENT) PERFORMED PERFORMED (LLD) RANGE RANGE RANGE DISTANCE & DIRECTION MEASUREMENTS SILT CAMMA 6 (PCI/ CRAM DRT) BE-7 N/A 3.9 < LLD 3.9 16C4 (INDICATOR) 0 (1/4) (1/2) v!NCENT DAM (3.9-3.9) (3.9-3.9) DOWNSTREAM OF DISCHARGE K-40 N/A 14 12 14 16C4 (INDICATOR) 0 (4/4) (2/2) (2/2) VINCENT DAM (10-18) (12-13) (10-18) DOWNSTREAM OF DISCHARGE MW-54 N/A 0.05 < LLD 0.05 1682 (INDICATOR) 0 (1/4) (1/2) LINFIELD BRIDCE (0.05-0.05) (0.05-0.C5) 1.1 MILES SSE OF SITE CS-134 .15 4 LLD < LLD < LLD 0 CS-137 .13 0.23 < LLD 0.25 1682 (INDICATOR) 0 (4/4) (2/2) LINFIELD BRIDGE (0.15-0.28) (0.23-0.27) 1.1 MILES SSE OF SITE RA-226 N/A 2.0 2.3 2.3 33A2 (CONTROL) 0 (4/4) (2/2) (2/2) UPSTREAM OF DISCHARGE (1.0-3.0) (2.1-2.6) (2.1-2.6)

TM-228 N/A 1.14 1.2 1.2 1682 (tNotCA?OR) 0 (4/4) (2/2) (2/2s LINFIELD 8 RIDGE (0.85-1.4) (1.2-1.2) (1.1-1.2) 1.1 MILES SSE OF SITE AIR PARTICULATE CROSS BETA 863 .01 16 17 19 13M4 (CONTROL) 0 (E-3 PCI/CU. METER) (760/760) (103/103) (52/52) 2301 MARKET ST. (PHILA.)

(0-31) 2-31) (6-31) 28.S MILES SE OF SITE MEAN AND RANCE BASED UPON DETECTABLE MEASUREMENTS OWLY.

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS IN0!CATED IN PARENTHESES (F).

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I-I APPENDIX B: SAMPLE DESIGNATION AND LOCATIONS I LIST OF TABLES AND FIGURES TABLES TABLE B-I: Location Designation and Identification System for the Limerick Generating Station

m TABLE B-II: Sample Collection and Analysis Program for the Operational ;

g Radiological Environmental Monitoring Program, Limerick '

Generating Station, 1991 FIGURES I FIGURE B-1: Environmental Sampling Locations on site or near the Limerick Generating Station FIGURE B-2: Airborne and TLD Environmental Sampling Stations at l Intermediate Distances from the Limerick Generating, Station FIGURE B-3: Aquatic and Terrestrial Environmental Stations at Intermediate Distances from the Limerick Generating Station FIGURE B-4: Environmental Sampling Stations at P. emote Distances from the Limerick Generating Station I

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I TAB;.E 8-I: Location Designation and Identification System for the Limerick Generating Station Ell - General code for identification of locations, where:

M -

Angular Sector of Sampling location.

The compass is divided into 36 sectors of 10 degrees each with center at Limerick off-gas vent. Sector 36 is centered due North, and others are numbered in a clockwise direction.

X -

Radial Zone of Sampling Location (in this report, the radial 3 dist:nce from the Limerick vent for all regional stations). 3 S : on-site location E : 4 5 miles off-site A : 0-1 mile off-site F : 5-10 miles off-site 8 : 12 miles off-site G : 10-20 miles off-site C : 2-3 miles off-site H : 20-100 miles off-site D : 3-4 miles off-site I -

Station's Numerical Designation within sector and zone, using 1, 2, 3... in each sector and zone, t

E B

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M M M M M M M M M M M M M M M M M -

M TABLE B-II: Sample Collection and Analy is Program for the Radiological Environmental Monitoring Program for L.imerick Generating Station, 1991 Collection Method Analysis & Frequency Location location Distance & Perforced--Consultant Description Direction and Frequency A. Surf.ce Water Two gatton samte cettected fresa e G. Sete (5&I) - amonthly - TI l

10F2 Petilomm Ptepirg T.1 mfles E Game spac - eenthly - 71 l continuous water samler, monthly l

Stetton (controt) Trititrs - que-terly com. - TI I

C. Set e ($11) - monthly - PSEG* l Game scec - sionthly - PSEG*

sase es ICF2 saw es 1CF2 1381 Vincent Osm 1.8 miles ESE (Indicator) same es 10F2 saw es 10F2 2451 Linerick Inteke 0.3 miles ssw (controt)

8. Drinkina (Potablel Water Two get ton comosite sagte collected G. Bete (541) - a m thly - T1 11M7 Sennont Water Worts 25.5 altes SE frors e continuous water snrpter, Garene Spec - sathly - TI (ledicator) sonthly Trititsw - garteely ctro. - T1 I

Sarme as 13M2 Phltadelphie 7.8 miles SSE Smee es 13N2 15F4 Stturban Water Covary (Irv31cator) same es 13M2 saw as 1312 15F7 Phoentsvitte Water 5.2 miles $5E Works (Indicator) sere es 13*2 saw es 1352 16C2 Cittrens Meme Water 2.4 miles sst Carpeny (indicator)

B-2

TABLE B-II: Sample Collection and Analysis Program for the Radiological Environmental Monitoring Program for Limerick Generating Station, 1991 Location location Distanc.e & Collection Method Analysis & Frequency Description Direction and Frequency Performed--Consultant 28F3 Pottste m Water 5.9 miles WW Same es 13M2 same es 13H2 Authority (controt)

C. Cow's Milk 36E1 4.7 miles N Two esitens processed milk purchased 1-131 - gaeterly - TI quarterly at form dairy store 9G1 control 11.4 miles E Two settert genb seapte rottected froe Same as 36E1 bulk tort at torn g;erterly 18C1 1.9 mile- S Sare i.s 9G1 Same es 36Et 1961 1.9 miles SSW 31-week 1y durIng greting sesson I-131 - bineekiy - TI (AprIi tbrough aovenber; senthty Gansas S m - blweek1y - TI otherwies 1-131 - garterly - PSEG*

Gamme spec - quarterly - PSEG*

2181 1.7 miles su Same es 1981 Same es 1 2 1 22C1 3.0 nites su Same as 90 same es 36E1 22F1 Controt 9.8 miles su same es 1991 same as 1931 2581 1.3 miles Wsw some es 1991 1-131 - biweekly - it Gamma spec - binee6 ty - TI D. Goat's M;1k 1081 1.1 mile ESE Two getton greb serpte purchesad et I-131 - blueekly - 78 goet farm, biweekIy during gearlea Gance Spec - biweekly - TI seescri (aprit througn movewber);

wonthly otherwise B-3 m M m m m m m m m m m m m m m m m m

M M M M M M M M M M M M M M M M M M M TABLE 8-II: Sample Collection and Analysis Program for the Radiological Environmental Monitoring Program for Limerick Generating Station, 1991 Collection Method Analysis & Frequency Location Location L. stance &

Direction and Frequency Perfonced--Consultant Description E. Air Particulates / Air Iodine Amroximately 1 c% continuous flow G. sete - weekly - 78 281 sanetoge sdetst!cn 1.5 sites wt I-131 - If necessary through stess fit: .r and cherecet fitters te m or. 2" diameter) which are instetted for one week eM reptoced Some es 281 Sane es 231 6C1 Pottsto m Le Ming 2.1 miles ENE Tield same es 231 some es 2s1 9C1 Reed need 2.2 miles E G. Set e - wa+4.t y - T f 0.5 aties E seme es 281 1053 Kean aoed Gweus spec - <*;ertcety cenp. - Tt I

1-131 - weekly - TI same es 281 Sama es 1053 list LCS Information 0.5 miles ESE Center some es 281 C. sete - weekty - PSEG*

11S2 LCS Infe1netien 0.5 mites ESE Game spec - cyier cepp - PSEG* .

Center Same es 231 Some es 1013 13C1 King Road 2.9 mites SE Some as 281 Some es 1053 !

13 4 2301 Market St., 28.8 miles SE Phltedelphis (contret)

Some es 2s1 Some as 1053

%st tongvlew Road 0.6 miles SE Same es 251 same es 1152 1452 Longview toed 0.6 nites SE Some es 231 same es 231 1501 spring City 3.2 miles SE sdatetten Some es 281 smee es 231 1781 Linfleid sibstetton 1.6 miles 5 Some es 281 Some es 251 20D1 Ettis Wood need 3.1 miles ssW B-4 I

t

TABLE B-II: Sample Collection and Analysis Program for the Radiological Environmental Monitoring Program for Limerick Generating Station. 1991 Collection Method Analysis & Frequency Location Location Distance & Performed -Consultant DescrJption Direction and Frequency Same es 281 same es 211 22G1 Menor substetton 17.6 miles $W (control)

Same es 231 same es 281 2651 Old schuytititt Roed 1.7 miles W Same es 281 same es 231 2981 vost Eood 1.8 miles W same es 281 same es 1053 3101 Lincoln substation 3.0 sites W Same se 2B1 se e es 2B1 34SZ Met. Tower #1 C.6 miles s W Sane es 281 sene es 1053 3551 Pteenntview toed 1.9 miles hW

, F. Fish Fish flesh from two grotes ce no spec - semiervsnity - 11 16C5 vincer<t Pool D e tream of Discharge representing predator and tsottem

({ndicator) feeder species collected by electroffsher or cther sopropriate fishery peer, seelemustty Sene es 16C5 same es 16C5 2051 Olscherpe Aree Omtream of (Indicator) O!scherge i

same es 16C5 saw as 16C5 2?C1 Pottstown vicinity tW~.rese of (controt) Inteke G. Sediment necently Seposited sedimnt cettected carsse spec - scof emuelty - TI Linfletd Bridge Downstrears of 1682 DIscherse below tre watertine, semi-emuelty (Indicator)

Sane es 1682 Sane es 1682 16C4 vicent Ds= Downstream o*

(Indicator) Discharge same se 1682 sare es 1682

?~,42 Controt Upstreers of Discharge B-5 M M M M M M M M M M M M M M M M M M M

TABLE B-II: Sample Collection and Analysis Program for the Radiological Environmental Honitoring Prrrce 4:r Limerick Generating Station, 1991 mm Location Location Distance & Collection Method Analysis & Frequency Description Direction and Frequency Performed--Consultant H. Environmental Dosimetry - TLD 3652 Evergreen & sanatoge 0.6 miles u Cottection method and fregamcy is tLD - mantMy - TI Road describmf in ptoce=w nt procedare TLD geerterly - TI section 181, A.

291 sanatoge subetetten 1.5 miles hue Same es 3652 same es 3652 2E1 Loughing Waters CSC 5.1 sites 44E same es 36s2 same es M32 3s1 sanatogs aced 0.6 miles awe same es 36s2 saae es 3652 4E1 Nefffer good 4.6 miles NE fame es 3652 same es 3652 551 Possum Mottow aced 0.4 miles NE same es 36s2 same es 36'".2 5M1 Birch s 4 stetton 25.8 miles NE same es 3652 sene es 3652 6C1 Pottstones tending 2.1 miles ?mE same es 3652 sene es 3652 Fletd Ts1 LCs Treining Center 0.5 miles ENE same se 3652 same es 3652 7El P5eesant Road 4.2 miles ENE same es 36s2 5==e es 3652 9C1 aced Road 2.2 miles E same es 3652 same so 3652 1053 teen Road 0.5 miles E same es 3652 sene es 3652 10E1 Royersford toed 3.9 miles E same as 3652 same es 3652 10F3 Trogpe sdutstion 5.5 miles ESE sa m os 3652 sene es 36s2 1151 LCs Inforsettor- 0.5 miles EsE same es 3652 sene es 3652 Center 13C1 King Road 2.9 arites SE same os 3652 same es 3652 B-6

TABLE B-II: Sample Collection and Analysis Program for the Radiological Environmental Monitoring Program for Limerick Generating Station, 1991 Distance & Collection Method Analysis & Frequency Location Location Performed--Consultant Description Directica and Frequency same es 3652 smar se 3652 13E1 Vou;;hn SWstation 4.3 miles SE same es 3652 smee es 3652 13N4 2301 Market street 28.8 sites SE P5ftedel#ife, (contret) same es 3652 same se 3652 1451 Longview Reed 0.6 miles SE same es 36s2 same es 36s2 1501 $prin0 City 3.2 miles SE

$4stetton same as .'652 same se 3652 1652 Longview text 0.6 miles ssE same es 36s2 same es 3652 I 1671 Pikeiend s e station 4.9 miles ssE 1.6 miles 5 same ea 3652 s e es 3652 17B1 Linfletd 54 station same es 3652 sene es 3652 1851 eeIi Line eiong E.3 miies s Longview Road same es 3652 same se 3652 18C1 Planebrook 12.9 eftes s sestation same es 3652 smee es 3652 1901 Snowden s e etation 3.6 ml1et 5 same es 3652 sene es 3652 2001 Ettle Woods Rood 3.1 miles !sW s we es 3652 same es 36s2 20F1 sheeder S

station 5.2 miies ssu some es 36s2 Same es 3652 2151 Impound seein 0.5 miles ssW saae es 36s2 same es 3652 22G1 Mener s estation 17.6 miles SW same es 36s2 same es 36s2 23s2 Transmiselon Tower 0.5 elles WSW same es 3^42 same es 3652 2t.01 Porters Mitt 3.9 miles su s*stetton B-7 m m m a m M M m M m m m m a m m m IW

W M M M W W W W W W M M M M M W W W W TABLE B-II: Sample Collection and Analysis Program for the Radiological Environmental Monitoring trogram for Limerick Generating Station, 1991 i

Location Location Distance & Collection Method Analysis & Frequency Description Direction and Frequency Performed--Consultant 1

4 25s1 sector site sewdery C.5 miles su sane es 3652 same es 3652

! 25D1 Moffecker & Keim 4.0 miles usW same as 3652 same es 3652 streets 26s3 Met. Tower #2

D.4* rites W sane es 3652 Sane es M s2 2681 0id Schuytkiil need 1.7 alies W same es 3652 same es 3652 28D2 W. Cedervitte moed 3.8 miles W ';aae es 36s2 same se 3652 29s1 sector site tomdery 0.5 miles WW same es 3652 same es 3652 2991 Yost Road 1.8 miles t:4 same es 3652 same es 3652

, 20E1 Prince stret 4.9 miles WW Same es Ms2 same es 3652 3101 Lincoln s entation 3.0 miten W sene es 3652 same es 3652 3102 Pepter sdatetton 3.9 miles W same es 3652 same as 3652 3251 sector site tomdery 0.6 miles W same se 3652 same es 36s2 32C1 Friendensharg 15.6 miles W same es 36s2 same es MS2 S*stetton 34s2 Met. Tower #1 0.6 miles WW Same es 3652 ss.e es 3652 34E1 vernett toed 4.6 miles k W some es 3652 tame es 3652 3581 Pleasantvil_e Road 1.9 miles NW same es 36s2 same es 3652 35F1 inging rock 4.2 miles N same es 36s2 same es 36s2 sestetton

OC Laboratory B-8

FIGURE B-1 ENVIRONMENTAL SAMPLING LOCATIONS ON-SITE OR NEAR l THE LIMERICK GENERATING STATION,1991 N I NNW NNE ll NW O / h S2 Ne g 3 S2 e WN 3 1 ENE I

/ S1 29S1 6 7S I o

w 2 S3 O 4 10S3 E I!

O/

1s( I 23 g' '

wSw c ESE I O

sw ~s .A se g Q

SSW s

SSE I SITE BOUNDARY g 36S2 EVERGREEN & SANATOGA RD. 20S1 LGS DISCHARGE AREA 3S1 SANATOGA RD. 2181 LGS IMPOUNDING BASIN "

$St POSSUM HOLLOW RD. 23S2 TRANSMISSION TOWER 7S1 LGS TRAINING CENTER 24S1 LGS INTAKE "

10S3 E E N R D. 2581 SW SECTOR 11St LGS INFORMATION CNTR. 26S3 MET. TOWER #2 =

14S1 LONGVIEW RD. 2981 WNW SECTOR

=

16S2 LONGVIEW RD. 32S1 NW SECTOR 18S1 RAILROAD TRACKS 34S2 MET. TOWER #1

I FIGURE B-2 l AIRBORNE AND TLD ENVIRONMENTAL SAMPLING LOCATIONS AT INTERMEDIATE DISTANCES FROM LIMERICK GENERATING l STATION,1991 N

I NNW -

NNE I NW NE 5F1 34E1 * '

o I WNW D2 e e

4E1

ENE W 28 2 E 2

3 -

e

J4D1 15 E h WSW

/ 2p}9 1

- ESE 20F1 1 Fj l

SW SE g SSW SSE

i. nn. i.oiu.

I 2B1 SANATOGA SUBSTATION 26D1 OLD SCHUYLKit.L RD I

13E1 VAUGHN ROAD 2E1 LAUGHING WATERS GSC 15D1 SPRING CITY SUBSTATION 28D2 W. CEDARVILLE RD 4E1 NElFFER ROAD 14F1 PIKELAND SUBSTATION 2981 YOST ROAD 6C1 POTTSTOWN AIRPORT 17D1 LINFIELD SUBSTATION 29E1 HIGH SUBSTATION 3101 LINCOLN SUBSTATION I. 7:11 PHEASANT ROAD 19D1 SNOWDEN SUBSTATION 3102 POPLAR SUBSTATIDN 001 PEED RO/.D 20D1 ELLIS WOODS F OAD 10E1 ROYER$ FORD ROAD 20F1 SHEEDER ltUBSTATION 34E1 YARNELL ROAD I 10F3 TRAPPE ILUBSTATION 13C1 KING ROAD 24D1 PORTERS MILL SUBSTATION 25D1 HOFFECKER & KEIM ST.

3581 PLEASANTVILI.E RD 35F1 RINGING ROCKS SUB

I FIGURE B-3 g AQUATIC AND TERRESTRIAL ENVIRONMENTAL SAMPLING LOCATIONS AT INTERMEDIATE DISTANCES FROM LtMERICK g GENERATING STATION,1991 N l NNW NNE NW Il NE

\ SE1 WNW ENE l 28F3 l

W 29c1 E g

. . - z.j g , B 1 2

g 8 1cc WSV SE

< 18 1*

. 5F7 E

SW 15F4 SE SSW I

SSE 3

ten mile radius 1081 FARfA IN ESE SECTOR 1981 FARM IN SSW SECTOR 1DF2 PERKIOMEN CREEK 2181 FARM IN SW' SECTOR 1381 VINCENT DAM 22C1 FARM IN SW SECTOR 15F4 PHIL. SUB. WATER CO. 22F1 FARM IN SW SECTOR 15F7 PHOENIXVILLE WATER CO. 25B1 FARM IN WSW SECTOR 16B2 LINFIELD BRIDGE 28F3 POTTSTOWN WATER AUTH.

16C2 CITIZENS HOME WATER CO. 29C1 POTTSTOWN YlCINITY 16C4 VINCENT POOL 33A2 UPSTREAM OF LGS 16CS VINCENT POOL 36E1 FARM IN N SECTOR 18C1_ FARM IN S SECTOR

I FIGURE B-4 ENVIRONMENTAL SAMPLING LOCATIONS AT REMOTE DISTANCES FROM LIMERICK GENERATING STATION,1991 N

g NNW -

NNE l NW NE

, 5H1 WNW I G1 I W E

.9G1 l .

s.....

B . . . ... ..

WSW 22G1 13H2 D E-1 G1 l H4. . . -

z _._.. .

SW SE I

SSW SSE g

I fifty mile radius I- SH1 BIRCH SUBSTATION I 901 FARM IN E SECTOR 13H2 BELMONT WATER WORKS 13H4 PECo SUILDING 18G1 PLANEBROOK SUBSTATION 22G1 MANOR SUBSTATION 32G1 FRIEDENBERG SUBSTATION I

I -

B I

I I

I

\

I I DATA TABLES PRIMARY LABORATORY I

I 1

I I

, I

I APPENDIX C: DAl' TABLES LIST OF TABLES AND FIGURES TABLES l

Table C-I.1 Concentrations of gross beta (soluble) in surface I water samples collected in the vicinity of Limerick Generating Station, 1991.

Table C-I.2 Concentrations of gross beta (insoluble) in surface I water samples collected in the vicinity of Limerick Generating Station, 1991.

I Table C-1.3 Concentrations of aqueous tritium in surface water samples collected in the vicinity of Limerick Generating Station, 1991.

Table C-I.4 Concentrations of gamma emitters in surface water samples collected in the vicinity of Limerick Generating Station, 1991.

Table C-II.1 Concentrations of gross beta (soluble) in drinking water samples collected in the vicinity of Limerick Generating Station, 1991.

g Table C-II.2 Concentrations of gross beta (insoluble) in drinking water samples collected in the vicinity of Limerick I Generating Station, 1991.

Table C-II.3 Concentrations of aqueous tritium in drinking water samples collected in the vicinity of Limerick l Generating Station, 1991.

I Table C-II.4 Concentrations of gamma emitters in drinking water samples collected in the vicinity of Limerick Generating Station, 1991.

Table C-III.1 Concentrations of gamma emitters in fish samples collected in the vicinity of Limerick Generating Station, 1991.

I Table C-IV.1 Concentrations of gamma emitters in silt samples collected in the vicinity of Limerick Generating Station, 1991.

g Table C-V.1 Concentrations of gross beta in air particulate samples collected in the vicinity of Limerick I Generating Station, 1991.

I I-

I Table C-V.2 Concentrations of gama emitters in air particulate samples collected in the vicinity of Limerick Generating Station, 1991.

Table C-VI.1 Concentrations of I-131 in air iodine samples col-1ected in the vicinity cf Limerick Generating Station, 1991.

l Table C-VII.1 Concentrations of I-131 in milk samples collected in the vicinity of Limerick Generating Station,1991. g Table C-VII.2 Concentrations af gemma emitters in milk samples collected to i m vicinity of Limerick Generating Station, 1991.

Table C-Vill.1 Monthly TLD results for Limerick Generating Station, 1991.

Table C-VIII.2 Quarterly TLD results for Limerick Generating Station, 1991.

Table C-VIII.3 Mean TLD results for the Limerick Generating Station site boundary, middle and outer rings, 1991.

Table C-VIII.4 Summary of the Ambient Dosimetry Program for Limerick Generating Station, 1991.

I Table C-IX.1 Summary of Collection Dates for samples collected in the vicinity of Limerick Generating Station, 1991.

E E

FIGURES E Figure C-1 Mean monthly soluble gross beta concentrations in E surface water samples collected in the vicinity of 5 LGS, 1982-1991.

Figure C-2 Mean monthly insoluble gross beta concentrations in surface water samples collected in the vicinity of l LGS, 1982-1991.

Figure C-3 Mean monthly soluble gross beta concentrations in drinking water samples collected in the vicinity of LGS, 1982-1991.

Figure C-4 Mean monthly insoluble gross beta concentrations in drinking water samples collected in the vicinity of LGS, 1982-1991.

l Figure C-5 Mean annual Cs-137 concentrations in fish samples collected in the vicinity of LGS, 1982-1991.

I_

I I figure C-6 Hean annual Cs-137 concentrations in sediment samples collected in the vicinity of LGS, 1982-1991.

Figure C-7 Mean weekly gross beta concentrations in air par-ticulate samples collected in the vicinity of LGS,

'J91.

Figure C-8 Mean monthly gross beta concentrations in air par-ticulate sampics collected in the vicinity of LGS, 1982-1991.

Figure C-9 Comparison of positive mean cesium-137 values in milk samples collected in the vicinity of LGS, 1982-1991.

Figure C-10 Mean monthly ambient gama radiation levels in the vicinity of LGS, 1982-1991.

I I

I lI lI o

!I I

lI I

I 1ASLE C*l.1 CONCENTRAfl0NS OF CROS$ BETA SOLUBLE IN susFACE WATER LAMPLES COLLECTED IN THE VICINIff 0F LIMERICK CAWERAflWG STAfl0N, 1991 RESULTS IN UN115 0F PCl/ lifer 2 $1GMA COLLECTION 1072 1381 24$1 PERICD JAN 91 9 ai 3.2 s 1.0 3.1 s 1.0 FEB 91 2.4 a 0.8 2.7 s 0.8 2.9 s 0.9 MAR 91 3.9 0.9 2.5 0.9 3.5 s 1.0 APR 91 3.8 s 1.0 3.0 a 1.0 2.6 s 1.0 KAY 91 5 s1 3 s1 4 s1 E JUN 91 JUL 91 9

4.1 s1 0.9 5

7 s1 s1 5

6 s1 s1 g

AUG 91 5 s1 7 s1 6 s1 SEP 91 4 ai 8 i 5 s1 OCT 91 6.4 s 0.7 6.2 s 0.8 5.2 s 0.7 Nov 91 6 s1 7 a1 6 a1 DEC 91 7 a1 6 s1 6 s1 MEAN 5.5 s 4.2 5.1 s 4.1 4.6 s 2.6 1ABLE C l.2 CONCENTRATIONS OF GRO$$ BETA INSOLU8LE IN SURFACE WATER SAMPLES COLLECTED IN THE YlCIWiff 0F LIMERICK CENERAflWG stall 0N, 1991 RESUtil IN Unit $ OF PCl/ LITER s 2 SICMA COLLECTION 10F2 1381 24$1 PERICD JAN 91 0.2 s 0.4 0.7 s 0.4 0.3 s 0.4 FEB 91 0.3 s 0.4 0.1 s 0.4 0.0 a 0.3 MAR 91 0.9 s 0.4 s 0.4 0.4 0.3 s 0.4 t 0.4 0.3 0.2 s 0.4 a 0.4 l

AFR 91 0.4 3 aar 91 4.3 a 0.7 0.8 s 0.5 0.0 a 0.4 JUN 91 0.1 a 0.3 0.2 s 0.3 0.6 t 0.3 JUL 91 0.6 s 0.4 0.8 0.4 0.4 s 0.4 AUG 91 0.6 0.4 1.2 a 0.4 0.5 s 0.4 EEP 91 0.7 0.5 0.5 3 0.5 0.3 a 0.5 OCT 91 1.0 s 0.6 1.1 s 0.6 0.9 s 0.6 NOV 91 0.4 t 0.4 0.6 s 0.5 0.3 s 0.4 DEC 91 0.6 0.6 0.1 s 0.6 0.8 : 0.6 E E

MEAN 0.8 a 2.2 0.6 s 0.7 0.4 s 0.6 TABLE C l.3 CONLENTRAfl0NS OF N 3 AQUECUS LIO. SCINT. W/ENR IN $URFACE WATER SAMPLES COLLECTED IN THE VICINIff of LIMERICK CENERAi!NG STAi!ON,1991 RESULTS IN UNifs OF PCl/ LITER s 2 SIGMA COLLECTION 10F2 1381 24$1 PERIOD JAN MAR 91 30 s 30 70 a 60 60 s 60 APR JUN 91 20 s 50 50 s 60 60 $ 30 JUL-SEP 91 90 a 50 90 a 50 100 s 50 OCT DEC 91 50 a 30 80 s 40 40 a 30 MEAN 20 s 110 70 s 30 70 s 50 I

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I I fA8tt C II.i CONCENTRAf10WW CT GROSS S!f A SOLLtBLE IN DRlWElbG lAltR $AMPLt$

COLILCICO IN INE VICIN11Y OF LIMERICC f.EhERAllNG STAfl0N, 1991 f'ESULTS IN UNifS OF PCl/Li1ER 2SICM COLLftt10N 13H2 1?F4 15F7 16C2 2873 PERIOD

.......... .6........... ..c.......... ............. ............. .............

JAN f* 2.9 s 1.0 3.8

1.0 2.3 s 0.9 1.6 0.9 2.6 a 0.9 I 7ts 91 3.0 a 0.9 5.3 s 0.9 3.5 s 0.9 2.3 s 0.9 2.6 s 0.9 MAR 91 3.3 s 0.9 2.6 0.0 4 11 2.4 s 1.0 3.0 a 0.9 APR 91 5 ai 3.9 a 1.0 3.1 e 1.0 1.8 s 1.0 3 a1 I MAY 91 JUN 91 JUL 91 AUC 91 4

6 6

8 s1 a1 a1 s1 A

6 10 5

s1 a1 a1 a1 4

5 9

7 e1 s1 a1 s1 2

6 6

8 e1 s1 s1 e1 4

5 6

7 s1 e1 s1 s1 a1 I

SEP 91 8 s1 6 a1 1 e2 8 s 7 OCT 91 7.1 0.P 7.5 s 0.8 T.8 s 0.8 6.4 s 0.4 7.0 s 0.8 WOV 91 8 ti 7 s1 S s1 7 s1 6 a1 DEC 91 5 s1 6 s1 4 s1 3 a1 4 a1 I MEAN 5.5 a 3.9 5.4 s 4.t 5.6 4.9 4.5 t 5.1 4-4 s 3.6 TAllt C*ll.2 I

CONCENTRAfl0Ns DF Cso$5 BETA INSOLUBLt IN DRINKING WAftt SAMPLES COLilCTED IN THE VICINITY OF LIMERICK GENERAflNG $1Afl0W, 1991 RESLATS IN UNiil DF PCl/LiftR s 2 $1(MA COLLtCTION 13N2 15F4 15F7 16C2 28F)

PEtt09 B .......... ............. ............. ...c......... ............. .............

JAN 91 0.3 a 0.4 0.3 s 0.4 0.3 a 0.4 1.2 s 0.4 0.3 s 0.4 FtB 91 0.2 s 0.4 0.0 s 0.3 0.0 a 0.3 0.6 e 0.4 0,0 a 0.3 I PA. 91 APR 91 MAY 99 JUN 91 0.3 0.5 0.1 1.4 a 0.4 s 0.4 a 0.4 s 0.4 0.0 0.0 0.2

-0.1 s 0.4 4 0.4 s 0.4 s 0.3 0.3 0.1 C.0 0.1 0.4 s 0.4 s 0.4 s 0.3 0.7 0.6 0.3 0.4 s 0,4 s 0.4 9 0.4 s 0.3 0.1 0.1 0.2 0.1 s 0.4 0.4 a 0.4 s 0.3 JJL 91 0.3 s 0.4 0.1 4 0.3 0.2 s 0.4 0.4 s 0.4 0.2 s 0.4

_I AUG 91 SEP 91 0.5 3.0 0.4 s0?

0.2 0.4 s 0.3 s 0.A J.1 0.7 a 0.3 0.6 0.7 0.9 s 0.4 0.5 0.3 0.4 a 0.4 s 0.5 OCT 91 1.6 e 0.6 4.9 e O.C 1.2 s 0.6 1.9 0.6 3.7 s 0.7 N7V 91 1.1 : 0.5 0.7 e05 0.3 s 0.4 0.9 0.5 0.7 s 0.5

,I DEC 91 kEAN 0.6 0.8 0.6 1.7 1.1 0.6

C.6 s 2.8 0.8 0.3 0.6 s 0.7 0.5 0.8 s 0.6 s 0.9 0.2 0.5 a 0.6 s 2.1 I TABLE C II.3 CoWCEhrRATIONG 0F r 3 AQUE00$ LIO. SCINT. W/tWR IN DRINKING WATER $AMPLES COLLECitU Id THE VICINFTT OF LIMERICK CEfiCRAllWG STAf!ON, 1991 RESULTS IN UNill CF PCl/tlTER 2 SICMA COLLECTION 13N2 15F4 15F7 16C2 28F3 PERIOD I .......... ............. ............. ............. ............. .............

JAN+ MAR 91 APR*JUN 91 (JL SEP 91 70 90 80 50 s 30 s 50 40 80 s 50 s 30 -20 60 140 s 50 80 a 50 e 60 to 70 0

30 s 40 s 50 30 50 4

a 60 3 30 e 50 OCT DEC 91 60 a 30 80 s 30 80 s 30 W s 40 100 s 30 LW MIAL 80 s 30 60 a 50 70 a 130 40 a 90 60 a 60 I

g c.4 I

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I

I i

I TABLE C V.1 CCWCENTRAfl0NS OF Cross 6tf A IN Alt FARTICULATE LAMPLES COLLECTED 11' THE YlClkITY 08 LIMft!CK GEN [ TAT!kG STAfl0N, 1991 l I RESULTS IN UN115 OF I 3 PCl/CU. METER 2 $1CAA GROUP I

ON 81TE LOCAfl0NS WEK 1013 I

1151 1451 3452 01 24 s3 22 a3 23 s3 25 a3 02 15 a3 s' s3 15 3 15 s3 03 17 s3 2. s3 17 s3 18 a3 I 04 05 06 07 21 26 20 16 a3 s3 t3 s3 20 25 20 12 a3 s3 s3 s2 14 18 20 12 a3 s3 s2 3

19 26 19 15 3

s3 3

a3 s3 I

08 11 s3 13 12 a3 10 a3 09 15 a3 18 3 15 : ~1 15 a3 10 17 s3 17 s3 18 3 18 s3 11 8 s3 8 3 8 3 8 a3 12 13 s3 13 3 14 s3 0 a2 a3 s3 a3

.I; 13 14 15 12 14 13 a3 a3 12 15 15 s3 a3 13 18 12 s3 s3 3 11 17 13 3

s3 16 10 s3 12 a3 12 a3 11 s3 17 a3 14 a3 13 a3 a3 I

12 14 18 12 3 13 s3 14 a3 13 a3 19 14 a3 13 s3 14 a3 15 t3 20 15 s3 16 s3 15 a3 14 a3 21 14 a3 16 3 15 s3 16 a3 I 22 23 24 25 19 12 20 12 t3 a3 a3 3 17 11 18 8

a3 s3

3 3

15 10 18 12 s3 s3 s3 s3 13 12 18 13 s3 3

3 s3 26 a3 i6 s3 s3 I

13 3 14 16 27 16 s3 14 s3 14 s3 15 a3 28 16 . 3 16 s3 17 3 19 s3 29 22 s3 20 a3 21 s3 21 a3 30 15 s3 15 3 13 a3 14 a3 I 31 32 33 34 22 11 20 14 s3 s3 s3 a3 to 12 21 15 a3 a3

3 s3 19 13 1T 15 a3 a3 3

3 16 13 18 13 3

a3 a3 s3 a3 s3 16 s3 16 s3 I

35 16 16 36 27 4 22 s4 20 4 19 3 37 18 s3 21 a3 19 a3 16 s3 35 17 s3 16 s3 18 a3 15 a3 39 15 a3 14 3 14 s3 13 a3 40 22 s3 20 a3 21 s3 19 s3 5 41 42 18 15 s3 3 19 21 s3 3 14 16 3

3 16 17

?3 s3 43 26 s3 30 4 25 3 26 s3 44 19 3 18 a2 20 s3 I

3 15 45 29 s4 27 3 23 3 25 *3 46 22 t3 21 s3 18 *3 20 a3 47 13 3 15 3 13 s3 13 s3 48 16 s3 16 s3 iT 3 17 s3

'I 49 50 51 52 20 IT 18 17 a3 s3 s3 a3 19 23 21 18 s3 s3 s3 3

26 19 17 IT s4 s3 s3 s3 21 16 16 17 e3 s3 a3 3

MEAN 17 t9 17 9 16 s7 16 $

I l C - 10 I

I TABLE C V.1 CONCIWiRAfl0k$ OF C:0$$ 6t1A IN Alt PAkilCULAi! EAMPLES COLLECTED Ik 1HE VIClkl1T OF LIMERICK GtktLAtlhG $1A110N, 1991 I>

ptSULTS Ik UnliS OF E 3 PCl/CU. Mtitt a 2 SIChA GROUP 11

IkitmFfDI ATE Dil1%CE LOCAllows "

WEtt 281 6C1 9C1 13C1 1501 1781

...... ............. ............. ............. ............. .. ........ ............. g 01 23 s3 24 s3 24 a3 27 s4 26 s3 26 a3 3 02 14 a3 12 s3 15 s3 15 s3 11 s3 16 s3 03 18 s3 19 s3 21 a3 18 a3 18 s3 18 s3 04 17 t3 18 3 18 a3 16 s3 17 3 19 3 05 25 s3 23 s3 24 s3 25 a3 25 a3 23 s3 06 19 3 19 s3 18 3 19 3 18 3 16 a3 07 13 s3 14 s3 15 a3 12 s3 (1) 10 a2 08 12 a3 11 a3 9 a3 13 a3 14 s3 11 s3 09 10 15 14 a3 3 15 16 a3 s3 16 18 a3 a3 17 18 s3 a3 17 18 a3 3 14 15 s3 3

l 3

11 8 3 9 s3 8 3 8 a3 11 a3 9 s3 12 11 s3 9 s3 to a2 13 s3 12 s3 13 33 13 13 s3 12 t3 13 a3 13 s3 13 s3 11 s3 14 13 a3 16 s3 17 a3 16 a3 17 s3 16 a3 15 12 s3 12 s3 12 a3 13 a3 12 s3 13 s3 16 12 3 it a3 9 s3 10 s3 13 a3 9 s3 17 92 a3 14 s3 15 a3 12 s3 15 a3 11 s3 18 19 9 a3 s3 11 a3 a3 10 s3 a3 12 s3 9 a3 a3 11 a3 i3 l

20 12 14 23 12 12 a3 13 17 3 14 15 t 3 a3 12 16 s3 15 12 a3 3

> 21 15 a3 14 3 15 a3 16 33 17 s3 13 a3 22 17 a3 15 a3 17 s3 15 a3 16 3 11 s3 23 9 s3 8 s3 11 e3 10 a3 11 s3 12 s3 24 18 a3 15 s3 18 a3 18 3 18 3 10 s3 25 11 a3 8 a3 to :3 10 a3 13 a3 9 s3 26 16 3 13 s3 14 s3 16 s3 14 3 13 s3 27 15 a3 13 s3 15 a3 16 a3 16 a3 13 a3 28 16 a3 15 a3 15 s3 17 3 15 s3 14 t3 29 23 3 20 a3 22 s3 (1) 21 s3 21 s3 30 17 s3 13 t3 16 a3 15 a3 14 a3 16 s3 31 18 s3 15 3 25 s4 15 a3 22 3 18 a3 32 11 s3 6 a2 11 a3 13 a3 12 s3 13 a3 33 21 a3 12 s4 21 e3 20 a3 20 s3 21 a3 34 16 a3 (1) 14 s3 17 s3 13 3 13 e3 35 16 s3 18 a3 16 a3 16 s3 17 a3 36 20 a4 19 a3 19 4 21 a4 17 a3 E 37 17 s3 18 a3 19 3 19 a3 20 a3 g 38 13 3 13 a3 13 3 15 a3 15 a3 39 15 a3 14 s3 15 s3 13 s3 14 a3 40 21 t3 19 a3 20 a3 19 a3 18 a3 41 17 s3 15 s3 15 a3 17 s3 19 s3 42 16 a3 18 a3 1T s3 19 s3 17 3 43 28 s3 24 s3 27 3 27 a3 31 s4 44 17 a3 21 e3 20 a3 21 a3 17 3 45 25 s4 27 s4 24 a3 25 s4 18 3 l

46 22 s4 20 a3 26 s4 21 a4 20 a3 g 47 12 s3 13 s3 14 s3 12 a3 16 a3 48 17 3 16 s3 16 3 14 a3 16 s3 49 18 s3 21 a3 21 e3 20 a4 20 s3 50 18 3 15 s3 20 s3 21 a3 21 a3 51 15 s3 17 a3 20 a3 19 3 14 3 52 19 s3 19 3 18 a3 18 s3 22 a4 19 a3 MEAk 16 9 14 8 16 :$ 17 t9 17 s9 16 s9 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLAkATION C - 11 g n

-l

I I TA$LE C V.1 CONCEkiRAflow$ of Ctos$ BEIA IN AIR PAstlCULAlt $AMPLt$

COLLECTED IW THE VICIW11T Of LIMTRICK CthtRAfikG $1 110W, 1991 RflULT$ IN UW118 Of E 3 PC1/CU. MEftR 2 $1GMA GROUP !!

IkitRMEDI ATE Di$1 ANCE LOCA...w$

I WEtt 2001 2681 2961 3101 35$1 01 26 s3 25 s3 25 a3 25 a3 24 s3 02 16 s3 15 a3 16 s3 16 s3 16 s3 03 19 s3 20 a3 19 s3 18 a3 20 t.

I 04 05 06 07 19 22 18 13 s3 a3 a3 a2 16 25 21 15 a3 a3 s3 a3 21 26 18 13 e3 s3 3

3 18 26 21 13 s3 a3 a3 s3 20 22 20 s3 s3 s3 s3

(,8 s3 I

11 13 s3 12 a3 14 a3 3 09 14 a3 14 s3 16 s3 13 s3 > s3 10 20 ' s3 19 s3 16 e3 18 s3 17 s3 11 9 s3 9 s3 1D s3 9 a3 10 e3 12 9 a2 11 +3 11 s3 11 a3 12 s3 I 13 14 15 16 11 15 12 9

a3 s3 a3 3

17 16 12 12

.3 s3 s3 3

11 iT 11 11 s3

3 a3 s3 12 15 12 10 a3 a3 s3 a3 11 16 12 11 s3 s3 s3 s3 iT s3 s3 s3 a1 s3 I

12 13 12 12 14 18 11 s3 10 e3 11 s3 10 s3 11 s3 19 12 s3 14 s3 13 3 12 s3 14 a3 20 16 3 0 a2 14 s3 15 s3 14 a3 21 13 s3 15 s3 15 a3 15 a3 10 a2 I 27 23 24 25 19 10 17 8

a3 a3 s1 14 11 19 13 a3 s3 a3 3

17 9

17 10

3 s3 s3 s3 15 11 18 12 a3 23 s3 s3 14 10 16 10 s3 a3 s3 e3 26 :T 16 s3 a3 a3 s3 I

15 13 13 12 2T 18 3 18 s3 15 s3 18 a3 13 s3 28 19 sJ 15 a3 17 s3 14 :3 15 s3 29 22 s3 19 a3 19 s3 23 s3 16 s3 30 1T 3 IT s3 15 s3 17 a3 15 a3 I 31 32 33 34 in 10 20 14 a3 s3 s3 3 16 10 IT 9

a3 s3

3 3

20 12 19 15 e3 a3 s3 s3 19 11 20 13 s3 a3 a3 s3 1T 10 19 il e3 a3 a3

3 35 18 a3 17 s3 a3 :3 17 s3 I

15 13 56 16 s3 17 a3 15 3 17 3 18 s3 37 21 s3 21 s3 18 a3 1T :3 18 a3 38 14 s3 12 a3 13 s3 14 s3 14 s3 39 13 s3 15 a3 16 s3 15 a3 12 a3 I 40 41 42 43 19 16 14 24 a3

3 s3 s3 17 17 15 24 a3 a3 s3 3

20 15 15 28 s3 s3 3

3 18 16 17 28 t3 s3 3

3 21 15 18 25 s3 a3 s3 a3 44 e3 s3 a3 I

17 3 17 3 19 15 18 45 22 a3 23 s3 27 a4 23 s3 26 s4 46 18 a3 21 s3 20 s3 19 s3 19 3 47 12 s3 13 a3 14 s3 13 s3 4 s2 48 17 a3 17 3 16 3 14 s3 0 10 I 49 50 51 52 24 19 20 17

4 a3 a3 3

23 20 15 18 s4 s3 a3 a3 18 18 20 20 a3 a3 s3 3

19 19 17 18 a3 e3 a3 a3 22 21 22 14 a3 s3 s3 s3 MEAN 16 s9 16 :V 16 9 16 8 15 : 10 I

l C - 12 l

I COLLECTED IN THE \lCINITY OF LIMERICK GENERAT8tG STATION, 1991 I

RESULTS IN LMITS Of E 3 PCl/CU. METEk s 2 $1CMA GROUP 11]

CONTROL LOCATIONS WEEK 13N4 22G1 01 25 a3 25 s3 C2 14 s2 16 33 03 18 s3 21 a3 04 24 s3 20 s4 05 23 s3 23 s 06 22 a3 18 se 07 17 s2 13 s3 08 15 a3 10 a3 09 15 s2 15 a3 10 21 s3 20 a3 11 13 s2 10 s3 12 6 s3 10 a3 13 15 s2 14 s3 14 21 a3 15 a3 15 31 a3 12 s3 16 15 a3 11 a3 17 15 a3 14 s3 18 13 s2 9 3 19 11 ?3 13 3 20 17 e3 14 33 21 16 22 14 a3 22 19 s3 (1) 23 13 a3 13 s4 24 24 23 18 :3 25 14 s3 10 s3 26 17 a3 16 3 27 18 a3 14 a3 28 17 3 17 a3 29 25 s3 22 i3 30 19 a3 13 a3 31 22 a3 18 s3 32 12 s3 9 s3 33 13 t3 18 s3 34 22 a3 11 t3 35 22 a3 14 s3 mm 36 20 s4 16 s3 5 37 23 s3 17 3 E 38 18 a3 12 a3 39 18 s3 14 s3 40 17 s3 15 23 5 41 42 18 23 s3 s4 20 14 t3 s3 5 43 29 a3 24 s3 44 21 a3 16 s3 45 27 s3 23 .t 3 46 26 s4 15 s3 47 17 s3 12 a3 43 20 a3 14 s3 49 23 s3 19 23 E 50 51 23 19 t3 4 13 17 s3 s3 g

52 21 t3 17 t3 NEAN 19 9 16 s8

! (1) SEE PROCEM EXCEPTIONS SECT 10W FOR EXPLAMATION i

l l

C - 13 E_

I TABLE C V.2 CONCEklRATIONS OF GAMMA EMITTEt$ IN Alt PARTI (11 LATE SAMPLES COLLECTED IN THE VICIWlif 0F Lit RICK GENERATING STATION, 1991 RESULT $ IN UNITS OF E 3 PCl/CU. METER 2 Sir.MA C001 PERIOD BE-7 K 40 CS-134 CS-137 I 1CS3 12/31 04/01/91 62 04/01-07/01/91 70 07/01 10/01/91 60 17 a7 a7

<4

<3

<5

< 0.2

< 0.3

< 0.2

< 0.3 10/01 12/30/91 52 7 8 5 MEAN 61 15 5 s& < 0.2 < 0.2 1141 12/31 04/01/91 59 8 13 a5 < 0.2 < 0.3 04/01-07/04/91 65 s8 <5 < 0.1 < 0.2 07/01 10/01/91 57 a7 <*. < 0.3 < 0.3 10/01 12/30/91 44 7 <4 < 0.2 < 0.2 MEAN 56 a 18 8 t8 < 0.2 < 0.3 I 1411 12/31-04/01/91 53 04/01-07/M/91 55 07/01 10/01/91 63 a6 a8 s7 6

6

<3 e5 5

< 0.1

< 0.3

< 0.1

< 0.3

< 0.2 10/01 12/30/91 38 e6 <3 < 0.2 < 0.2 I 1XI NEAN 12/31 04/01/91 71 52

7 21 5 11 s3 34

< 0.2

< 0.2 I 04/01 07/01/91 64 07/01-10/01/91 57 10/01 12/30/91 45 s 10

8 t7 7

<6

<5 4 /.

< 0.2

< 0.3 59 22 7 :> '

< 0.2 < 0.2 I

MEAN 13h4 12/31 04/01/91 59 a9 < 10 < 0.4 < 0.4 04/01 07/01/91 69 :8 <4 < 0.2 < 0.2 07/01 09/30/91 51 6 5 a2 < 0.2 = 0.2 -

09/30-12/30/91 40 a5 =4 < 0.2 = 0.2 MEAN 55 s 25 6 6 < 0.t. < 0.3 4

I I

I C - 14 I !

I TALLE C-VI.1 CONCEN1RATIch5 0F l 131 BT GA*A $PECTRosCOPT IN AIR ICDINE SAMPLE $

COLLECTED IN THE VICINITY OF LIMCRICC GENERATING STATIDW, 1991 RESULTS IN UNII$ OF [*3 PCl/CU. METER a 2 SIGMA CR3)P l1 "

CROUP l CRCLIP III WEEE 1053 1151 1451 13C1 13N4 01 < 10 < 10 < 10 < 10 < 10 l

5 02 < 10 < 10 < 10 < 10 < 10 03 < 10 < 10 < 10 < 10 < 10 04 < 9 < 9 < 9 < 10 < 10 05 < 10 < 10 < 10 < 10 < 10 06 < 9 < 9 < 9 < 10 < 6 07 < 6 < 6 < 6 < 7 < 9 08 < 10 < 10 < 10 < 10 < 7 09 10 8

5 8

5

< 9

< 6 6

9 l

m 11 < 8 < 8 < 3 < 9 < 10 12 < 8 < 8 < 8 < 9 < 9 13 < 10 < 10 < 10 < in < 10 14 < 9 < 9 < 9 < 10 < 10 15 < 9 < 9 < 9 < 10 < $

16 < 9 < 9 < 10 < 10 < 10 17 < 5 < 5 < 6 < 6 < 6 18 < 9 < 9 < 9 < 10 < 5 l 19 < 7 < 7 < 7 < 8 < 4 g 20 < 8 < 9 < 9 < 9 < 3 21 < 7 < 7 < 7 < 7 < 6 22 < 8 < 8 < 8 < 8 < 10 23 < 8

8 < 8 < 8 < 5 24 < 10 < 10 < 10 < 10 < 10 25 < 6 < 6 < 7 < 7 < 10 26 < 6 < 7 < 7 < / < 6 27 < 8 < 8 < 9 < 9 < 4 l 28 < 8 < 9 < 9 < 9 < $ 3 29 < 9 < 10 < 10 < 10 < 10 30 < 7 < 7

7 < 7 < 10 31 < 8 < 8 < 8 < 8 < 4 32 < 9 4 9 < 9 < 9 < 20 33 < 9 < 9 < 9 < 9 < 20 34 < 10 < 10 < 10 < 10 < 10 35 < 8 < 8 c 8 < 8 < 9 36 < 10 < 10 < 10 < 10 < 6 5 37 < 7 < 7 < 7 < 7 < 20 3 38 < 10 < 10 < 10 < 10 < 5 39 < 8 < S < 8 < 8 < 4 40 < 10 < 10 < 10 < 10 < 10 41 < 8 < 9 < 9 < 9 < 10 42 < 7 < 7 < 7 < 7 < 20 43 < 9 < 9 < 9 < 9 < 6 44 < 7 < 7 < 7 < 7 < 7 45 < 8 < 8 < 8 < 8 < 6 46 < 9 < 9 < 10 < 10 < 7 47 < 6 < 10 < 6 < 6 < 20 48 < 10 < 10 < 10 < 10 < 4 49 < 20 < 20 < 20 < 20 < 10 50 < 10 < 10 < 10 < 10 < 50 51 < 10 < 10 < 10 < 10 < 20 52 < 10 < 10 < 10 < 10 < 10 MEAN < 9 < 9 < 9 < 9 < 10 E

C - 15 g I'

I

C000000000 3.8. 8 8 8.8. 8.9 3 3 00000000000 G.a.s.t.s.3 0. s.3 8 3 8O I .

e

. m . 5 8 3 5 8 8 8 0.G.3 5. 9 5 8 8. 8 8 3 5 5 5 5 em .C00000 0000 0 0000000000 O.

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e O O O O O e

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e es es . es s .

e e e u .

- :8 0 0 8 5

. N O O O O O N .e e

. b.8.N.B.8.88839 G.3 8.8.8 8 8 8 8 8 8 8

. 0000000000 00000000000 O

. .e . . ee . . . . . .e . . es . eses ee . . . . . .

. e e as e -

I.".G..55.85885

. 0 000000000 85883533380 5 000000000 00 O.

e N . s e e

G. 3 8 8 8 8 8. 8 8 0 3 8

. : 8.G. 8 8.S.b.3 3 3 8 00000000000 O e 00000000OO

. e ee e . es es to . ee +e es et ce es es es es es es se . ee . es er K . .

Dd . .

< e e O N e ** C *e N m - N O *= ** ** ** N *= m O m **

6 *=

m e 0 0 0 0. e* O. 0 0 0 .

. C.0,0 0 0 0 0 0 0 0 0 O.

.e h CO0,00000 00 B

a e e e 0 000000000 O. O.

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- . 0 0 0, 00 5

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5 :

..C000000000

t. e. .8.b.8 8889 9 3.b. 8.3 3 3 3 3 9. . B.

w N 00000000000 O e

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es . es es es es es et 4. es es ce ee es ee ed ed et de et e es 4.

.=J .

w e

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w w eNO .A ** O m m e m o d *a ** ** ** O N N *=

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e ,=,=ee-e=====,--==c.e-,=e.+=w=-,=,=e=e DOMhOMh@bhhhOhOOh@ hh g a u p- . %%%%%%%%%%%%% W gg w<e c@ @ O h m N ** ad 40 N m 43 O m=>% % eQ 0 *d % N% %'*.r*O% %E w a aO e O N%%%%%%%%%%%NNNNNNNNNS e- == 0 N O N d ** O O v= m *= N ** N O N O *= *=

I m

2 $ *539338888U500888823

' ~

R

l I

TASTE C VII.2 CONCENTRAfl0NS OF GAPMA EMiffERS IN CILE SAMPLES CC1LECTED IN THE YlCINITY OF LIMERICK GECERAfl0G ST ATION, 1991 I

RESULT $ IN UNITS OF PCl/LITEk 2 $1GMA STA110N COLLECTION CODE DATE K 40 CS 134 CS 137 eA 140 LA 140 1081 01/08 01/08 1400 a 100 <2 <2 <6 <2 02/19-02/19 1600 a 200 <2 <2 <5 <2 03/19 03/19 1500

100 <2 <2 <6 <2 04/09 04/09 1400 a 100 <2 <2 <6 <2 04/23 04/23 1600 a 200 05/07-05/07 1500 t 200

<2

<2 6

<2 a3

<6

<3

<3 l

N 05/21 05/21 1500 s 200 <2 8 : 4 <8 <3 06/04 06/04 1600 t 200 <2 6 s3 <6 <3 06/18 06/18 1600 a 200 <2 7 a3 <6 <3 07/02 07/02 1600 e 200 <2 6 a3 *6 <2 07/16 07/16 1600 1 200 <2 <2 <9 <3 07/30-07/30 1600 s 200 <2 4 a3 <6 <3 08/13-08/13 1700 a 200 <2 7 3 <7 <3 08/27-08/27 1500 s 200 <2 <2

<2

<8 <4

<2 l

09/10 09/10 1600 a 200 <2 <6 3 09/24-09/24 1500 s 200 <2 4 a3 <6 <J 10/08 10/08 1500 s 100 <2 <2 <6 <2 10,22 10/22 1500 t 200 <2 5 s3 <6 <3 11/05 11/05 1400 s 100 <1 6 a3 <6 <2 11/19 11/19 1300 a 100 <2 4 s3 <7 <3 12/10 12/10 1600 a 200 <2 <2 <5 <3 HEAN 1529 s 191 <2 4 4 <6 <3 1991 01/08 01/08 1300 a 100 <2 <2 <5 <2 02/19 02/19 1300 a 100 <2 <2 <6 <3 03/19 03/19 1400 a 100 <2 <2 <5 <2 04/09 04/09 1200 s 100 <1 <2 =6 <2 04/23 04/23 1300 a 100 <2 5 t3 <6 <*.

05/07 05/07 1400 a 100 <1 <1 <5 <s 05/21 05/21 1300 a 100 <2 <2 <8 <3 06/04 06/04 1300 a 100 06/18-06/18 1300 t 100

<2

<8

<6

<3

<2 l

g 07/02 07/02 1300 a 100 <2 <2 <6 <3 07/16 07/16 1000 s 100 <1 <1 <7 <3 07/30-07/30 1400 a 100 <2 <2 <6 <2 08/13 08/13 1400 a 100 <2 <2 <8 <3 08/27-08/27 1400 a 100 =2 <2 <9 <4 09/10 09/10 1200 t 100 <2 <2 <6 <2 09/24-09/24 1300 100 <1 <2 <5 <3 10/08-10/08 1200 a 100 <2 <2 <6 <2 E 10/22-10/22 1300 100 <2 <2 < 20 <7 N 11/05-11/05 1300 t 100 <2 <2 <6 <2 '

11/19 11/19 1200 2 100 <2 <2 <8 <3 12/10-12/10 1300 100 <1 <2 <5 <2 MEAN 1290 189 <2 52 <7 <3 m 2181 01/08-01/08 1400 1 100 <1 <2 <4 <2 32/19-02/19 1300 t 100 <2 <2 <5 <2 03/19-03/19 1300 a 100 <2 <2 <5 <2 04/09-04/09 1300 t 100 <1 <2 <5 <2 04/23 04/23 1200 a 100 <2 <2 <6 <3 05/07 05/07 1400 a 100 <2 =2 <6 <2 05/21 05/21 1200 a 100 <2 <2 <8 <3 06/04-06/04 1300 t 100 <2 <2 <6 <2 06/18 06/18 1400 1 100 <2 <2 46 <2 07/02-07/02 1400 1 100 <2 <2 <6 <2 07/16-07/16 1300 a 100 <2

<2

<9

<6

<3

<2 l

g 07/30-07/30 1300 a 100 08/13 08/13 1300 s 100 <1 <2 <7 <3 08/27-08/27 1200 a 100 <2 <2 <B <3 09/10 09/10 1200 a 100 <2 <2 <5 <2 09/24-09/24 1300 2 100 <2 <2 <5 <2 10/n8-10/08 1300

100 <2 <2 <5 <2 10/22 10/22 1300 a 100 <2 <2 <6 <2 11/05 11/05 1400 2 100 <2 4 s3 <6 <2 11/10-11/19 1400 a 100 <2

<2

<7

<5

<3

<2 l

g 12/10-12/10 1300 a 100 MEAN 1310 a 140 <2 2 11 <6 <2 51 C - 17 -

l l

I I. TABLE C-VII.2 CONCENTRAfl0NS OF GAMKA EMITTERS IN MILK LAMPLES COLLECTED IN THE VICINITY OF LIMERICK CENERATING STATION, 1991 RESULTS IN UNITS OF PCI/ LITER a 2 SICMA STA110N COLLECTION CODE DATE K 40 CS 134 CS 137 BA 140 LA-140 I 2581 01/08 01/08 1300 a 100 02/19 02/19 1400 a 100 03/19-03/19 1500 a 100

<1

<2

<1

<2

<4

<5

<1

<2

<3

<2 04/09-04/09 1200 a 100 <2 <5 I 04/23 04/23 1300 s 100 05/07 05/07 1300 a 100 05/21 05/21 1100 a 100 06/04 06/04 1300 a 100

<2

<6

<8

<6

<2

<3

<4

<2 06/18 06/18 1300

100 <2 <2 <6 <3 I 07/02-07/02 1300 t 100 07/16 07/16 1100 2 100 07/30 07/30 1500 t 200

<2

<6

<8

<6

<2

<3

<2 08/13-08/13 1400 t 100 <1 <1 <5 <2 08/27 08/27 1400 a 100 <2 <2 <8 <4 09/10-09/10 1400 a 100 <2 <2 <5 <2 09/24-09/24 1400 a 100 <2 <2 <5 <2 10/08-10/08 1200 a 100 <2 <2 <5 <2 10/22 10/22 1400 a 100 <2 <2 <6 <2 I 11/05 11/05 1400 11/19-11/19 1300 e 100 12/10 12/10 1300 2 100 100 <2

<2

<1

<2

<5

<2

<2 MEAN 1324 s 218 <2 <2 <6 <2 22F1 01/08-01/08 1400 a 100 <2 <2 <4 <1 02/19-02/19 1400 a 100 <2 <2 <5 <2 03/19-03/19 1400 a 100 <2 4 s3 <5 <2 I -04/09 04/09 1300 a 100 04/23-04/23 1300 t 100 05/07-05/07 1300 s 100

- 05/21 05/21 1000 a 100

<2

<2 5

3

<2

3 a3

<5

<6

<7

<2

<3

, 06/04 06/04 1200 s 100 <2 <2 <6 <2

! 06/18-06/18 1400 a 100 <2 <2 <5 <2 07/02 07/02 1500 e 100 <2 <2 <5 <2 07/16-07/16 1500 a 100 <2 <2 <8 <3 07/30 07/30 1200 a 100 <t <2 <5 <2 I 05/13-08/13 1400 2 100 08/27 08/27 1300 2 100 09/10 09/10 1300 a 100

<1

<2

<1

<2

<5

<8

<5

5

<2

<3

<2

<2 09/24-09/24 1300 a 100 10/08 10/08 1200 s 100 <2 <2 1 <2 10/22 10/22 1100 100 <2 <2 <5 <2 11/05 11/05 1300 t 100 <2 4 a3 <5 <2 11/19-11/19 1300 a 100 <1 <2 <5 <2 12/10-12/10 1300 2 100 <2 <2 <5 <2 W MEAN 1305 a 241 <2 2 a2 <5 <2 l

l LI C - 18 I .

1

- MTHLY TLD RESULTS FOR LIMERICK GENERATING ST ATION, 1991 TABLE C-vitt.1 RESULTS IR UNITS OF MILLt-RDENIGEN/$10. MO.12 S.D.

AUG SEP OCT NOV DEC.

MAR APR MAT JUN JUL STATIDH MEAN 1 JAN FEB CODE 2 S.D. (1) 9.1 2 0.6 7.4 e 2.0 8.5 0.8 8.9 e 1.5 8.4 e 0.4 7.8 2 1.7 7.4 t 0.7 6.7 0.6 7.0 2 0.6 8.7 e 0.6 6.7 2 0.4 7.2 2 0.9 7.9 t 0.4 3652 0.1 6.2 2 0.2 6.5 2 0.6 7.3 a 0.4 7.9 s 1.1 7.2 e 0.5 7.9 0.4 8.3 a 1.7 7.1 281 7.2 e 1.5 6.9 t 0.3 6.1

0.3 6.6 t 0.6 7.9 0.6 l 8.5 t 0.4 8.8 0.8 8.5 0.9 8.6 0.4 8.7 e 1.2 6.8 e 0.4 7.9 e 1.5 7.3 e 0.2 7.6 t 0.1 7.8 2 0.6 8.5 e 0.2 6.9 e 0.1 7.4

0.9 2E1 7.7 t 0.2 l 6.5 t 0.3 7.2 1.1 8.2 2 0.3 8.4 0.4 7.6 t 0.7 8.2 a 0.8 8.6 e 1.6 351 7.7 e 1.4 7.2 2 0.4 7.3 2 0.3 6.7 e 0.4 8.3 1 0.3 l

6.2 a 0.3 6.9 t 0.5 6.4 a 0.9 6.8 t 0.3 6.9 e 1.1 6.0 2 0.4 6.2 1 1.0 5.9 2 0.3 6.2 t 0.1 5.70.6 5.9 e 0.3 5.5 0.4 5.8 e 0.4 4E1 8.0 2 0.2 9.0 2 0.6 10.1 : 1.0 9.5 0.T 9.2 t 1.2 8.6 e 0.3 551 8.7 e 1.7 8.2 t 0.4 7.4 e 0.7 7.9 s 0.6 9.1 0.5 7.5 2 0.4 9.4 t 0.4 8.6 e 0.5 9.3

0.6 8.7 e 0.8 9.6 e 1.5 10.4 1.7 9.1 a 0.3 8.3 2 0.3 7.6 t 0.3 8.2 a 0.6 8.8 2 0.3 8.2 2 0.5 8.3 s 1.0 5H1 8.8 a 1.5 8.7 0.5 8.3 t 0.6 7.6 e 0.3 7.D e 1.1 8.2 a 0.3 6.9 e 0.9 7.3 a 0.1 7.8 0.3 8.3 a 0.4 8.1 2 0.8 6c1 7.72 1.4 7.3 e 0.5 6.4

0.2 8.1 : 1.2 7.2 e 0.5 7.6

0.3 7.9 : 0.3 8.72 1.1 8.0 2 0.8 8.6 2 0.7 8.8 0.7 FS1 7.92 1.4 7.6

0.4 6.8 0.2 7.0 t 0.2 8.6 e 0.5 0.2 8.0 t 0.3 8.5 t 0.7 7.8 e 0.3 7.8 e 0.8 8.7 2 0.6 8.0 t 0.3 7E t 7.72 1.3 7.4 a 0.4 6.6 0.5 7.0 2 0.6 8.0 t 0.5 6.7 0.7 7.5 0.7 7.5 2 0.4 7.5 0.4 7.7 2 0.7 8.4 0.7 8.4 t 0.6 7.3 e 0.5 9c1 7.4 e 1.4 7.0 t u.2 6.5 2 0.2 6.8 2 1.1 8.3 2 0.7 6.4 2 0.4 7.1 7.0 t 0.5 7.4

0.6 8.3 e 0.4 8.8 2 0.3 10.7 e 3.5 7.0 t 0.5 1053 7.8 2 2.3 7.3 2 0.4 6.8 0.3 7.0 2 0.1 8.6 2 0.3 6.9 e 0.4 8.0 t 0.3 7.c t 0.5 8.5 2 0.4 7.9 e 0.3 8.6 e 0.5 9.5 t 0.4 7.9 e 0.1 7.5 t 0.2 6.6 e 0.3 6.8 2 0.4 8.9

0.7 6.9 e 0.5 7.6 e 0.7 90E1 7.9 t 1.8 9.2 a 0.6 7.6 2 0.4 8.8 e 0.4 7.7

0.5 7.6 2 0.8 7.8 e 1.1 8.3 2 0.4 8.2 2 0.5 8.5 t 0.4 10F3 7.9 e 1.5 7.5 e 0.7 6.6 e 0.2 7.0 2 0.2 8.8

0.2 9.3 2 0.4 10.1 e 1.5 8.7 i 0.6 10.2 2 0.5 8.6 2 0.4 8.2 2 0.3 8.1 t 0.1 7.8

0.4 9.4

0.7 7.7 e 0.7 8.3 2 0.1 1151 8.8 a 1.7 6.7 1 0.7 7.2 2 0.6 5.2 2 0.1 5.0 t 0.4 6.8

0.4 5.2 2 0.7 5.5 t 0.4 5.8 0.1 7.3 e 1.2 6.3 2 0.6 13C1 6.0 e 1.7 5.6 2 0.4 5.1 2 0.1 7.6 e 0.3 8.0 2 0.3 8.4 2 0.1 8.1 a 0.1 8.9 e 0.7 8.9 1.0 8.0 e 1.7 9.1 2 0.7 6.7 0.2 6.9 2 0.3 8.7 0.5 6.9 2 0.4 7.5 t 0.6 13E1 4.6 0.2 4.2 2 0.3 5.0 2 0.6 4.2 2 0.5 5.5 2 0.6 6.3

0.5 1.2 2 0.2 13H4 4.8 e 2.7 5.8 t 0.3 5.3

0.7 5.0 t 0.3 6.3 2 0.5 4.7 e 0.2 7.0 t 0.4 7 6 e 0.5 7.4 2 0.5 8.2 a 0.4 9.8 2 0.5 7.5 e 1.2 6.6 2 0.5 6.1 1 0.3 6.3 a 0.6 8.4 0.4 6.3 2 0.3 7.0 a 0.3 1451 7.3 s 2.1 9.3 2 0.6 7.2

0.1 8.7 t 0.1 7.1 e 1.1 7.3 t 0.5 7.7 e 0.5 9.0 t 0.5 8.4 a 1.1 8.6 t 0.5 15D1 7.9 e 1.8 7.4 t 0.5 6.6 e 0.3 7.0 a 0.7 7.0 t 0.3 7.5 0.4 7.2 2 0.4 7.9 2 0.9 8.2

1.4 6.9 0.4 6.8 2 0.6 6.3 2 0.4 6.1 2 0.4 7.7 2 0.5 6.1 t 0.3 7.0 a 0.4 16S2 7.1 1.4 8.0 t 0.4 7.8 e 0.8 7.7 0.9 8.8 e 0 7 8.4 2 0.4 8.9 e 0.6 9.1 2 0.4 16f1 7.9 e 1.5 7.2 t 0.6 7.0 2 0.4 7.1 t 0.4 8.1 0.3 7.2 t 0.3 1 7.3 e 0.5 7.7 e 0.5 7.2 e 0.4 8.7 0.3 7.3 e 0.5 7.1 0.3 6.5 e 0.4 6.7

0.3 8.1 0.2 6.7 t 0.3 7.0 t 0.4 8.0 t 0.4 1781 7.4 e 1.3 8.8 0.3 8.0 2 0.4 6.8

0.3 6.0 2 0.7 7.7 2 0.3 6.1 t 0.4 6.3

0.2 6.3 e 1.1 7.5 s 0.4 7.2 2 0.5 1851 7.0 t 1.7 6.6 2 0.4 7.0 2 0.9

1. PEAN AMS TWO TIMES THE STANDARD DEVI ATION OF THE MONTMLY RESULTS.

C - 19 EE M M M M M M M M M M M M M M M

"^ '

."^

TCBLE C-VIII.i MONTHLY TLD RESULTS FOR LIOERICK CENERATING STATIOk, 1991 RESULTS IN UN!!S OF MILLI-ROENTGEN /STO. Mo.

2 S.0.

STATION MEAN

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT MCtf DEC CODE 2 S.D. (1) 18G1 6.2 s 1.1 6.3 e 0.2 5.7 e 0.4 5.8 e 0.5 T.6 t 0.4 5.7 e 0.4 6.0 a 0.3 6.2 t 0.3 6.5 m 0.2 5.6 2 0.4 6.5 s 0.5 6.6 e 0.1 5.8 e 0.2 MD1 7.6 t 1.7 6.8 e 0.3 7.8 2 0,4 6.5 t 0.7 8.0 a 0.4 6.4 0.4 7.0 a 0.7 7.3 a 0.2 8.8 t 0.5 7.9 e 0.3 8.0 e 0.2 9.0 2 0.9 7.7 a 0.5 2001 7.0 2 1.5 6.6 t 0.3 6.1 e 0.3 6.2 a 0.5 7.8 e 0.7 5.9 2 0.3 6.6 . 0.7 6.7 : 0.2 7.6 s 0.4 7.3 a 0.2 7.9 a 0.5 8.2 e 0.7 6, 9 t 0.5 20F1 7.6 e 1.5 7.3 a 0.5 6.8 s 0.4 6.6 m 0.3 8.1 0.5 6.5 t 0.4 7.1 0.6 8.6 2 0.2 8.2 a 0.4 8.2 e 1.5 7.8 m 0.4 8.5 0.4 7.8 s 0.4 2151 6.8 t 1.7 6.2 2 0.4 6.3 2 0.5 5.8 e 0.2 6.4 e 0.3 5.8 t 0.5 6.5 e 0.6 6.6 t 0.6 7.8

0.6 7.0 s 0.6 8.0 a 0.2 3.5 a 1.2 7.1 a 0.3 22G1 7.1 1.6 ' 6.7 s 0.3 6.5 0.3 6.3 $ 0.8 7.5 s 0.4 6.0 e 0.3 6.1 a 0.2 6.9 e 0.4 7.6 a 0.4 7.5 0.8 8.2 a 0.7 8.4 a 0.9 7.0 a 0.4 23S2 7.1 1.5 6.7 t 0.3 6.4 e 0.3 6.2 s 0.5 7.7

0.5 6.2 2 0.2 6.8 e 0.5 6.7 0.8 7.8 e 0.4 7.4 a 0.6 8.1 a 0.6 8.5 a 0.5 7.2 a 0.7 2401 6.8 t 2.0 ' 6.4 a 0.4 6.3 2 0.3 5.8 0.3 7.4 t 0.4 5.3 2 0.2 6.0 t 0.5 6.4 1 0.4 8.0 a 0.7 6.9 t 0.2 7.9 e 0.6 8.8 e 1.2 6.9 2 0.4 2551 7.1

1.8 6.3 s 0.4 7.2 a 0.2 6.0 s 0.2 7.5 e 0.9 5.7 a 0.3 6.6 e 0.3 6.9 e 0.3 7.2 a 0.4 7.6 m 1.3 8.0 m 0.5 ' 9.0 a 0.6 6.7 e 0.4 2501 6.5 s 1.7 5.9 m 0.5 5.8 1 0.4 5.6 e 0.3 7.0 2 0.2 5.4 a 0.3 6.0 a 0.6 5.8 1 0.6 7.2 a 0.5 T.0 e 0.3 7.3 a 0.5 8.2 a 0.6 6.8 e 0.9 2653 6.9 e 1.8 6.0 a 0.2 0.3 2 0.0 7.0 s 0.2 7.3 e 0.3 5.5 e 0.4 6.3 e 0.6 6.0 a 0.8 8.0 2 0.1 T.2 a 0.6 7.8 t 0.2 .8.4 s 0.5 6.7 e 0.3 2681 7.3 2 1.6 6.7 s 0.4 6.4

0.3 6.7 e 0.7 7.6 e 0.5 6.1 0.4 7.0 2 0.3 7.2 e 0.4 7.8 e 0.6 7.6 e 0.4 8.4 a 0.3 8.7 e 0.4 7.1 : 0.4 2802 7.1 1.4 6.6 e 0.3 6.5 s 0.8 6.3 2 0.4 7.5 0.4 6.0 a 0.9 6.8 e 0.7 7.1 a 0.1 7.8 e 0.4 7.4 e 0.6 7.7 0.2 8.4 e 0.6 6.9 0.2 2951 6.8 t 1.7 6.3 a 0.5 6.3 t 0.4 5.9 2 0.2 7.4 a 0.4 5.4 a 0.3 6.3 e 0.4 6.7 0.4 7.6 0.5 6.7 e 0.4 7.7 e 0.2 8.2 a 0.2 7.6 a 1.0 2991 7.4 e 2.3 6.7 e 0.5 6.3 a 0.3 6.7 a 0.7 7.7 m 0.4 6.0 m 0.2 7.6 e 0.6 7.2 a 0.6 8.3 a 0.7 7.$ a 1.1 8.3 a 0.5 10.0 e 1.3 6.2 a 0.2 29E1 7.3 i 1.5 6.9 t 0.4 6.4 0.4 6.5 m 0.6 7.6 a 0.4 6.1 a 0.7 7.1 a 0.5 7.2 e 0.3 7.9 0.5 8.0 a 1.4 8.2 a 0.1 8.6 m 0.4 7.2 a 0.8 3101 9.1 2 1.7 8.5 a 0.7 8.1 s 0.3 9.0 e 1.5 9.6 a 0.6 7.4 a 0.3 8.7 s 0.5 9.1 0.2 9.7 e 0.6 9.1 a 0.9 9.8 a 1.4 10.7 a 0.9 9.5 a 0.7 3102 7.7 a 1.5 7.3 a 0.5 6.8 s 0.4 7.1 a 0.2 8.4 a 0.5 6.4 0.2 7.5 e 0.6 8.3 e 0.7 7.8 e 0.5 8.0 e 0.6 8.5 s 0.7 8.9 e 0.3 7.8 e 0.5 32S1 6.0 e 1.7 5.6 e 0.3 5.2 2 0.3 5.2 0.2 6.4 s 0.2 4.8 e 0.3 5.7 s 0.4 6.0 a 0.9 6.9 e 0.9 6.2 e 0.3 7.2 a 0.6 7.3 2 0.3 5.0 a 0.4 32G1 7.8 a 1.7 7.3 a 0.2 6.8 s 0.1 7.2

0.2 8.2 a 0.7 6.4 a 0.5 7.5 s 0.2 7.8 0.3 8.7 s 0.3 8.1 e 1.0 8.9 e G.3 9.2 a 0.4 7.6 s 0.4 34S2 8.1 e 1.3 7.8 m 0.6 7.3 e 0.3 7.7 m 0.3 8.7 2 0.4 7.6 e 1.0 7.8 e 0.8 7.8 a 1.1 7.5 t 0.3 8.3 a 0.5 9.0 a 0.4 9.5

0.7 7.9 a 0.4 34E1 7.5 e 1.8 7.1 : 0.3 6.8 2 0.3 6.8 e 0.3 7.9 a 0.4 6.2 e 0.3 8.7 e 1.0 7.5 e 0.3 8.2 a 0.5 7.9 e 0.4 7.4 s 0.2 9.1 e 1.0 6.6 s 0.4 35s1 7.7 2 1.7 7.1 a 0.4 6.6 e 0.3 6.3 e 0.7 8.2 a 0.5 6.4 e 0.3 7.4 e 0.6 7.7 e 0.4 8.5 e 0.3 7.8 e 0.4 8.6 e 0.4 9.1 a 0.5 7.7 s 0.5 35F1 8.4 1.4 7.9 a 0.5 8.1 a 0.1 7.6 s 0.3 8.1 e 0.2 7.3 a 0.6 8.7 s 0.S 8.6 e 0.5 8.9 m 0.5 8.7 a 0.3 9.3 a 0.5 9.6 a 0.9 7.6 s 0.6

1. MEAN AND TWO TIMES THE STANDARD DEVIATION OF THE MONTHLY RESULTS.

C - 20

I TABLE C-Vill.2 QUARTERLY ILD RESULTS FOR LIM [alCK GENERATING STATION, 1991 RESULTS IN UNITS OF MILLI

ROENTGEN /STD. MO.

2 S.0.

STATION MEAN : J AN-MAR APR JUN JUL*SEP OCT-DEC CODE 2 S.0. (1) 36s2 6.3 1.1 6.4 s 0.4 6.0 2 0.3 7.1 a 0.5 5.8 0.5 281 5.8 1 0.9 5.8

0.3 5.9 0.6 6.2 a 0.2 5.1 s 0.3 2E1 6.4 2 1.7 5.9 0.1 5.8 + 0.1 7.6 s 0.4 6.5 0.5 351 5.9 1.1 5.7

0.1 5.7 0.3 6.7 s 0.2 5.4 s 0.2 4E1 4.o 1 0.9 4.6 t 0.2 4.4 0.3 5.2 s 0.4 4.2 a 9.3 5S1 6.6 a 1.1 6.8 1 0.3 6.2 a 0.2 7.4 2 0.3 6.2 a 0.4 ,

SN1 f.2 a 1.2 7.2 C.3 7.1 2 0.4 8.0 s 0.3 J.6 0.3 6C1 6.0 a 1.2 5.8 s 0.3 5.6 2 0.2 6.9 t 0.3 5.7 0.3 751 6.3 t 1.3 6.3 1 0.1 6.0 t 0.3 7.3 a 0.4 5.8 s 0.2 '

7E1 6.1 2 0.9 6.0 1 0.2 6.0 t 0.4 6.8 2 0.3 5.7 0.3 9C1 5.8 t 1.3 5.9 0.2 5.5 s 0.4 6.6 0.2 5.1 0.4 1053 6.3 a 1.2 6.5 0.1 5.9 0.3 7.0 s 0.1 5.7 s 0.3 10E1 6.3 3 0.8 d.2 s 0.3 6.0 t 0.4 6.9 s 0.5 6.2 1 0.3 10F3 6.3 2 1.2 6.3 a 0.3 5.9 s 0.4 7.1 s 0.4 5.8 s 0.3 11S1 7.0 a 1.3 6.7 a 0.2 7.4 1.3 7.7 0.4 6.3 a 0.2 13C1 4.6 s 0.6 4.5 t 0.1 4.3

0.1 5.0 a 0.1 4.6 s 0.2 13E1 6.1 1.4 6.1 2 0.2 5.7 t 0.3 7.1 0.3 5.6 0.3 13h4 4.3 s 0.9 4.5 0.2 4.1 a 0.2 4.9 t 0.4 3.9 0.1 14S1 5.5 a 1.0 5.4 a 0.1 5.3 a 0.4 6.2 a 0.2 5.1 s 0.2 1501 6.5 s 0.8 6.3 s 0.3 6.3 1 0.1 7.1 0.3 6.5 1 0.4 16S2 5.5 t 1.1 5.5 s 0.2 5.2 s 0.3 6.3 a 0.4 5.1 a 0.2 16F1 6.6 s 1.4 6.4 a 0.2 6.0 t 0.4 7.6 s 0.4 6.5 s 0.3 17B1 5.8 0.8 5.8 0.3 5.5 s 0.3 6.4 a 0.3 5.5 s 0.4 1851 6.0 t 1.2 5.4 s 0.2 5.7 0.6 6.7 a 0.5 6.3 2 0.1 18G1 4.8 e 0.6 5.1 a 0.2 4.7 a 0.2 5.0 a 0.3 4.5 0.4 1901 6.3 1.1 5.8 : 0.2 6.8 a 0.4 6.7 1 0.5 5.8 s 0.4 2001 5.6 2 0.8 5.5 0.2 5.3 a 0.4 6.2 t 0.4 5.5 s 0.3 20F1 6.2 1.3 5.9 a 0.2 6.8 0.4 6.7 1 0.2 5.5 s 0.2 21S1 5.4 a 0.5 5.4 a 0.2 5.3 s 0.2 5.8 0.3 5.2 a 0.3 22G1 5.7

0.9 5.9 a 0.1 5.4 a 0.3 6.3 a 0.5 5.3 a 0.3 23S2 5.6 s 0.7 5.7 a 0.2 5.4 a 0.3 6.1 s 0.3 5.4 a 0.6 2401 5.3 2 0.4 5.3 a 0.1 5.2 s 0.2 5.6 0.2 5.2 a 0.4 25S1 5.6 2 0.8 5.o

0.2 5.3 a 0.3 6.2 a 0.2 5.3 a 0.1 2501 5.0 2 0.8 5.0 2 0.1 4.9

0.2 5.6 2 0.5 4.7 s 0.1 26S3 5.3 a 0.6 5.2 a 0.1 5.1 2 0.1 5.8 s 0.2 5.3 s 0.7 2681 5.7

1.0 5.7 0.2 5.3 2 0.4 6.4 a 0.6 3.4 a 0.4 28D2 5.8 0.8 6.0 s 0.3 5.4 0.2 6.3 a 0.3 5.5 4 0.6 E 29S1 5.6 0.7 5.9 t 0.2 5.3 t 0.3 5.9 s 0.2 5.3 a 0.2 5 2981 6.0 s 0.8 6.0 s 0.3 5.5 s 0.1 6.4 s 0.3 6.3 a 0.4 29E1 6.0 s 0.7 5.9 1 0.2 6.0 s 0.5 6.5 s 0.3 5.7 0.2 3101 7.3 1.0 7.1 a 1.0 6.7 2 0.2 7.9 2 0.2 7.3 0.2 31D2 6.3 2 1.4 6.2 a 0.2 5.6 s 0.2 7.2 a 0.1 6.0 s 0.2 32S1 4.5 t 0.7 4.5 s 0.2 4.1 a 0.3 4.9 0.4 4.6 0.3 32G1 6.4 s 1.6 6.1 0.2 5.8

0.2 7.6 0.4 6.2 a 0.3 34S2 6.7 e 1.2 7.1 2 0.2 5.9 2 0.3 7.3 2 0.3 6.6 0.6 34E1 5.8 e 1.1 6.0 a 0.2 5.2 s 0.3 6.5 s 0.2 5.7 : 0.1 3581 6.0 e 1.1 5.8 0.5 5.5 1 0.4 6.8

0.3 5.8 0.3 35F1 6.7 t t.3 6.4 a 0.4 6.4 s 0.2 7.7 e 0.3 6.3 t 0.3

1. MEAN AND TWO TIMES THE STANDARD DEY!ATION OF THE QUARTERLY RESULTS.

I C - 21 I

._ ~l

cI i

TABLE C-vill.3 1991 MEAN TLD RESULTS FRCM LIMERICK ENERATING STATION M* TWE $1TE SOUNDARY, MIDDLE, A 2 CUTER RINGS I SAMPLE RESULTS IN UNITS OF MILLI ROINTGEN/STD. No. t 2 STANDARD DEVIAT10NS OF TNk STATICm DATA EXPOSURE $1TE NIDDLE RING CUTER RING PERIOD I

TYF2 MONTMLT JAN 1991 6.9 a 1.6 7.1 t 1.5 6.9 a 1.9 ftB 1991 6.7 t 1.4 6.6 a 1.3 6.4 a 1.8 MAR 1991 6.6 a 1.6 6.7 a 1.5 6.5 a 2.5 I APR 1991 MY 1991 JUN 1991 JUL 1991 8.0

1.8 6.4 a 1.7 7.0 1 1.4 7.3 a 2.0 8.0 t 1.4 6.4 t 1.3 7.2 t 1.6 7.5 a 1.6 7.7 a 1.9 6.2 a 2.6 6.4 4 3.1 6.9 1 2.9 AUG 1991 8.0 a 1.4 8.2 1.2 7.3

4.0 I SEP 1991 CC 1991 NOV 1991 7.7 a 2.1 8.3 a 1.1 8.9 s 1.7 7.4 a 1.8 7.8 a 1.3 8.2 2 1.4 8.8 a 1.5 7.3 a 1.6 7.1 a 2.9 7.9 s 2.9 7.2 7.2 6.8 a 3.4 DEC 1991 QUARTERLY JAN MAR 1941 5.9 a 1.4 5.9 i.1 5.8 a 2.1 ,1 APR-JUN 1991 9.6 1 1.4 5.7 t 1.2 5.4 s 2.3 JUL SEP 1991 6.5 a 1.5 6.6 1.4 6.4 2 2.9 OGT-DEC 1991 5.6 a 1.1 5.7 s 1.3 5.3 a 2.3 I TABLE C-Vill.4 SUSARY OF THE 1991 AM81ENT DOSIMETRY PROGRJ.M FOR LIMERICK GENERATlWG STATION RESULTS IN UNITS OF MILLI-ROENTGEN /STD. MO.

PERICD PRE-LP I NO. OF SAMPLES PERICD PERICD SAMPLE Mf_AN MEAN TTPE LOCATION ANALYZED MINIMLM MAXIM.H A 2 S.D.

2 S.D. (1)

MONTNLY $1TE 192 4.8 10.7 7.4 s 2.2 7.6 a 2.4 MIDDLE RING 324 5.0 10.7 7.5 t 2.0 7.8

2.2 CUTER RING 60 1.2 10.4 6.9 a 3.2 7.8 a 3.0 _

QUARTERLY SITE 64 4.1 7.7 5.9 a 1.5 MIDDLE RING 108 4.2 7.9 6.0 a 1.5 CUTER RING 20 3.9 8.0 5.7 1 2.3 (1) THE PRE-OPERATIONAL NEAM WAS CALCULATED FROM TLD READINGS 1 15 82 TO 12-02-84 SITE BCONDARY RING STATICats - 351, 5S1, 751,10S3,11$1,1451,16S2,1851,

- 2151,2352,2551,2653,29S1,32S1,34-2,3652, MIDDLE RING STATit*S - 251, 2E1, 4L1, 6C1, 7E1, 9C1,10E1,10F3,

- 13C1,13E1,1501,16F1,1791,1901,2001,20F1,

_I - 24D1,2501,2681,28D2,2991,21E1,31D1,3102,

- 34E1,355';,35F1.

CUTER RlWG STATIONS -

SN1,1314,18G1,22G1,32G1.

I C - 22

I' TABLE C IX.1 Su m ARY OF COLLECTION DATES SAMPLES COLLECTED IN 1HE VICINI.Y OF LIMERICK GENERATING STATION, 1991 Ii SURFACE WATER (GROSS BETA AND GAJ#u)

COLLECTICW 10F2 1381 24$1 PE2IG)

JAN 91 12/27 01/28 12/27 01/28 12/27-01/28 FEB 91 01/28 32/25 01/28 02/25 01/28-02/25 MAR 01 02/25-03/26 02/25 03/26 02/25 03/26 AFR 91 03/26 04/29 03/26 04/29 03/26-04/29 MAY 91 04/29 05/23 04/29 05/28 04/29 05/28 JUN 91 05/28 06/24 05/28-06/24 05/28 06/24 JUL 91 06/24-07/29 06/24-07/29 06/24 07/29 AUG 91 07/29-08/27 07/29-08/27 07/29-08/27 SEP 91 08/27 09/27 08/27 09/27 08/27 09/27 C;T 91 09/27 10/29 09/27-10/29 09/27-10/29 Nov 91 10/29-11/15 10/29 11/25 10/27-11/25 DEC 91 11/25 12/30 11/25 12/30 11/25 12/30 I

%1 FACE WATER (TRIT!UM)

JAN-MAR 91 12/27-03/26 12/27-03/26 12/27 03/26 APR JUN 91 03/26-06/24 03/26-06/24 03/26- % 24 JUL-SEP 91 06/24-09/2J 06/24-09/27 06/24 09/27 CCT-DEC 91 09/27-12/30 09/27-12/30 09/27-12/30 DRINKING WATER (GROSS SETA AND GAMMA)

COLLECTION 13H2 15F4 15F7 16C2 28F3 PERICC JAN 91 12/27-01/28 12/27 01/28 12/27 01/28 12/27 01/28 12/27 01/28 FEB 21 01/28-02/25 01/28-02/25 01/23 02/25 01/28-02/25 01/28-02/25 i4AR 91 02/25-03/26 02/25-03/26 02/25-03/26 02/2!-03/26 02/25 03/26 E APR 91 03/26-04/29 03/26 04/29 03/26 04/29 03/26-04/29 03/26-04/30 3 MAY 91 04/29 05/28' 04/29-05/28 04/29-05/28 04/29-05/28 04/29-05/28 JUN 91 05/28 06/24 - 05/28-06/24 05/28-06/24 05/28-06/24 05/28 06/24 JUL 91 06/24 07/29 06/24-07/29 C6/24 07/29 05/24 07/29 06/24 07/29 AUG 91 07/29-08/27. 07/29-08/27 07/29-C8/27 07/29 08/27 07/29-08/27 SEP 91 08/27 09/27 08/27-09/27 08/27-09/27 08/27-09/27 08/27 09/27 OCT 91 09/27 10/29 09/27-10/29 09/27-10/29 09/27-10/29 09/27-10/29 Nov 91 10/29-11/25 10/29-11/25 10/29-11/25 10/29 11/25 10/29-11/25 DEC 91 11/25-12/30 11/25-12/30 11/25-12/30 11/25 12/30 11/25-12/30 DRIKING WATER (TRIT!UM)

JAN-MAR 91 12/27-03/26 12/27 03/26 12/27-03/26 12/27-03/26 12/27 03/26 APR-JUN 91 03/26-06/24 03/26-06/24 03/2.6-06/24 03/26 06/24 03/26-06/24 JUL-SEP 91 0( '24-09/27 06/24-09/27 06/24-09/27 06/24-09/27 06/24 09/27 OCT-DEC 91 09/27 12/30 09/27 12/30 09/27 12/30 09/2?-12/30 09/?7-12/30 C - 23 l I.

I I TABLE C IX.1 SubmART OF COLLECTI(W DATES FOR SAMPLE $ COLLECTED IN THE VICIN!TT OF LIMERICK OLNEP.ATIbG STATION, 1991 AIR PARTICULATE AND AIR IODINE I- ..............................

GRCUP I - 04 $1TE LOCATIONS WEEK 10s3 1161 1451 3452 D' 12/31-01/07 12/31-01/07 12/31-01/07 12/3*e 01/07 02 01/07 01/14 01/07-01/14 01/07-01/14 01/07-01/14 03 01/14-01/21 01/14-01/21 01/14 01/21 01/14-01/21 04 01/21-01/28 01/21 01/28 01/21-01/28 01/21-01/28 05 01/28 02/04 01/28 02/04 01/28-02/04 01/28 02/04 I 02/04 02/11 02/04-02/11 02/04-02/11 02/04 02/11 00 07 02/11 02/19 02/11 02/19 02/11 *)2/10 02/11-02/19 08 02/19 02/25 02/19 02/25 02/19 02/25 02/19-02/25 09 02/25-03/04 02/25 03/04 02/25 03/04 02/25 03/04 10 03/04 03/12 03/04-03/12 03/04-03/12 03/04-03/12 11 03/12-03/18 03/12 03/18 03/12-03/18 03/12-03/18 12 03/18 03/25 03/18 03/25 03/18-03/25 03/18-03/25 13 03/25-M/01 03/25-04/01 03/25 04/01 03/25 04/01 14 04/01-04/08 04/01 04/08 04/01-04/08 U4/01-04/08 04/08 04/15 04/08-04/15 04/06 04/15 04/06 04/15 I

15 16 04/15-04/22 04/15-04/22 04/15-04/22 04/15-04/22 17- 04/22 04/29 04/22-04/29 04/22-04/29 04/22-04/29 18 04/29-05/06 04/29 05/06 04/29-05/06 04/29 05/06 19 05jo6 05/13 05/06 05/13 05/06 05/13 05/06-05/13 I 20 21 22 23 05/13 05/20 05/13-05/20 05/13 05/20 05/13 05/20 05/20-05/28 05/20 05/28 05/20 05/28 05/20 05/28 05/28 06/03 05/28 06/03 01/28-06/03 05/28-06/03 06/03-06/10 06/03-06/10 06/03 06/10 06/03 06/10 06/10 06/17 06/10-06/17 06/10-06/17 06/10-06/17 I

24 25 06/17 06/24 06/17 06/24 06/17 06/24 06/1T 06/24 26 06/24 07/01 06/24 07/01 06/24-07/01 06/24 07/01 27 07'01 07/08 07/01 07/08 07/01-07/08 07/01-07/08 28 07/08-07/15 07/08-07/15 07/08-07/15 07/08 07/15

'E 29 07/15-07/22 07/15-07/22 07/15 07/22 07/15-07/22 g 30 31 07/22-07/29 07/22 07/29 07/22-07/29 07/22-07/29 07/29-08/05 07/29-08/05 07/29 08/05 07/29-08/05 32 08/05-08/12 08/05-08/12 08/05 08/12 08/05 08/12 33 08/12-08/19 08/12 08/19 08/12 08/19 08/12 08/19 I 34 35 36 37 C ?9-08/26 08/19-08/26 08/19-08/26 08/19 08/26 08/es-09/03 08/26 09/03 08/26-09/03 08/26-09/03 09/03-09/09 09/03-09/09 09/03 09/09 09/03 09/09 09/09-09/17 09/09-09/17 09/09 09/17 09/09 09/17 I 38 39 40 41 09/17-09/23 09/17-09/23 09/17 09/23 09/17 09/23 09/23 10/01 09/23 10/01 09/23 10/01 09/23 10/01 10/01-10/07 10/01 10/07 10/01 10/07 10/01 10/07 10/07 10/14 10/07 10/14 10/07 10/14 10/07 10/14 42 10/14 10/21 10/14-10/21 10/14-10/21 10/14 10/21 43 10/21-10/28 10/21 10/28 10/21 10/28 10/21 10/28 44 10/28 11/04 10/28-11/04 10/28 11/04 10/28-11/04 45 11/04-11/11 11/04-11/11 11/04 11/11 11/04 11/11 46 11/11 11/18 11/11-11/18 11/11-11/18 11/11 11/18 I 47 48 49 50 11/18 11/25 11s18 11/25 11/18 11/25 11/18-11/25 11/25-12/02 11/25 12/02 11/25 12/02 11/25 12/02 12/02-12/09 12/02 12/09 12/02 12/09 12/02 12/09 12/09-12/16 12/09-12/16 12/09-12/16 12/09-12/16 51 12/16 12/23. 12/16-12/23 12/16 12/23 12/16 12/23 52 12/23-12/30 12/23-12/30 12/23-12/30 12/23 12/30 C - 24 I

I TABLE C-IX.1 SLMMARY OF CatLECTION DATES FOR TMPLES COLLECTED IN THE VICINITY OF LIMERICK GENERAflWO stall 0N,1991 AIR PARTICULATE AND AIR 10DlWE GROUP !!

INTERMEDI ATE DIST ANCE LOCAfl0N$

WEEK 281 6C1 9C1 13C1 1501 1791 01 12/31 01/07 12/31 01/07 12/31 01/07 12/31 01/07 12/31-01/07 12/31 01/07 02 01/07-01/14 01/07-01/14 01/0'7 01/14 01/07-01/14 01/07 01/14 01/07 01/14 03 01/14-01/21 01/14-01/21 01/14-01/21 01/14-01/21 01/14 01/21 01/14-01/21 04 01/21-01/28 01/21 01/28 01/21-01/28 01/21-01/28 01/21 01/28 01/21-01/28 05 01/28 02/04 01/28-02/04 01/28 02/04 01/28 02/04 01/28-32/04 01/28 02/04 06 02/04-02/11 02/04 02/11 02/04 02/11 02/04 02/11 02/04 02/11 02/04 02/11 07 02/11-02/19 02/11 02/19 02/11-02/19 02/11-02/19 02/ti 02/19 08 02/19-02/25 02/19 02/25 02/19-02/25 02/19 02/25 02/19-02/25 02/19-02/25 09 02/25-03/04 02/25-03/04 02/25 03/04 02/25 03/04 02/25 03/04 02/25-03/04 10 03/04-03/12 03/04 03/12 03/04 03/12 03/04 03/12 03/04-03/12 03/04 03/12 11 03/12-03/18 03/12-03/18 03/12-03/18 03/12-03/18 03/12 03/16 03/12 03/18 12 03/18 03/25 03/18 03/25 03/18 03/25 03/18 03/25 03/18-03/25 03/18 03/25 13 03/25-04/01 03/25-04/01 03/25 04/01 03/25 04/01 03/13 04/01 03/25-04/01 14 04/01 04/08 04/01-04/08 04/01-04/08 04/01-04/08 04/01 04/08 04/01 04/08 15 04/08 04/15 04/08 04/15 04/08 04/15 04/08 04/15 04/08-04/15 04/08 04/15 16 04/15-04/22 04/15 04/22 04/15 04/22 04/15 04/22 04/15 04/22 04/15-04/22 17 04/22-04/29 04/22 04/29 04/22 04/29 04/22 04/29 04/22 04/29 04/22 04/29 18 04/29 05/06 04/29 05/06 04/29 05/06 04/29 05/06 04/29 05/06 04/29 05/06 19 05/06-05/13 05/06-05/13 05/06-05/13 05/06 05/13 05/06 05/13 05/06-05/13 20 05/13-05/20 05/13 05/20 05/13 05/20 05/13 05/20 05/13-05/20 05/13 05/20 E 21

'22 05/20 05/28 05/20-05/28 05/20 05/28 05/20-05/28 05/20 05/28 05/20-05/28 05/28-06/03 05/28 06/03 05/28 06/03 05/28-06/03 05/28 06/03 05/28-06/03 g

23 06/03-06/10 06/03-06/10 06/03 06/10 06/03 06/10 06/03-06/10 06/03 06/10 24 06/10-06/17 06/10-06/17 06/10-06/17 06/10-06/17 06/10 06/17 06/10 06/17 25 06/17 06/24 06/17 06/24 06/17-06/24 06/17-06/24 06/17 06/24 06/17 06/24 26 06/24-07/01 06/24-07/01 06/24 07/01 06/24 07/01 06/24-07/01 06/24 07/01 27 07/01-07/08 07/01-07/08 07/01 07/08 07/01-07/08 07/01-07/08 07/01 07/08 28 07/08-07/15 07/08 07/15 07/08-07/15 07/08 07/15 07/08 07/15 07/03-07/15 29 07/15-07/22 07/15 07/22 07/15 07/22 07/15 07/22 07/15-07/22 30 07/22 07/29 07/22 07/29 07/22 07/29 07/22-07/29 07/22-07/29 07/22-07/29 31 07/29-08/05 07/29 08/05 07/29-08/05 07/29-08/05 07/29-08/05 07/29-08/05 32 08/05 08/12 08/05 08/12 08/05-08/12 08/05-08/12 08/05-08/12 08/05 08/12 33 08/12-08/F 08/12 08/16 08/12 08/19 08/12-08/19 08/12 08/19 08/12 08/19 34 08/19 fS/26 08/19-08/26 08/19 08/26 08/19-08/26 08/19-08/26 35 08/26 09/03 08/26 09/03 08/26-09/03 08/26-09/03 08/26-09/03 36 09/03 09/09 09/03 09/09 09/03 09/09 09/03 09/09 09/03 09/09 37 09/09-09/17 09/09-09/17 09/09 09/17 09/09 09/17 09/09 09/17 38 09/17 09/23 09/17 09/23 09/17-09/23 09/17-09/23 09/17 09/23 E 39 09/23 10/01 09/23 10/01 09/23-10/01 09/23-10/01 09/23 10/01 E 40 10/01-10/07 10/01-10/07 10/01 10/07 10/01 10/07 10/01-10/07 41 10/07-10/14 10/07 10/14 10/07-10/14 10/07 1C/14 10/07-10/14 42 10/14-10/21 10/14-10/21 10/14-10/21 10/14 10/21 10/14 10/21 43 10/21-10/28 10/21 10/28 10/21 10/28 10/21 1 W28 10/21-10/28 44 10/28 11/04 10/28 11/04 10/28-11/04 10/28 11/04 10/28 11/04 45 11/04-11/11 11/04 11/11 11/F. 11/11 11/04 11/11 11/04 11/11 46 11/11-11/18 11/11-11/18 11/11-11/18 11/11-11/18 11/11-11/18 47 11/18-11/25 11/18 11/25 11/18-11/25 11/18-11/25 11/18-11/25 E 48 49 11/25-12/02 12/02-12/09 11/25-12/02 11/25-12/02 11/25-12/02 11/25-12/02 12/02-12/09 12/02 12/09 12/02-12/09 12/02-12/09 g

50 12/09-12/16 12/09-12/16 12/09 12/16 12/09-12/16 12/09-12/16 51 12/16-12/23 12/16-12/23 12/16-12/23 12/16 12/23 12/16 12/23 52 12/23-12/30 12/23 12/30 12/23-12/30 12/23-12/30 12/23-12/30 12/23-12/30 I

C - 25 I

'==='a -______ _ ____ _ _ _ _ _ _ _ _ _ _ . __ _ ___ _ _ _ . _ _ _ _ _ _ _ _ _ ____ _ __

i I

I TABLE C IX.1 SubmART OF COLLECTICW DATES FOR $AMPLES COLLECTED IN THE VICINITY 07 LIMERICK OENERATlkG STA110N, 1991 CRCUP li thTERMEDIATE DISTANCE LOCATIONS WEK 2001 2681 2961 3101 35b1

...... .........+... ............. ............. ............. .............

01 12/31-01/07 12/31 01/07 12/31 01/07 12/31 01/07 12/31 01/07 I- 02 03 01/07-01/14 01/07 01/14 01/07-01/14 01/07 01/14 01/07 01/14 01/14-01/21 01/14-01/21 01/14-01/21 01/14 01/21 01/14 01/21 04 01/21-01/28 01/21 01/28 01/21 01/28 01/21 01/28 01/21-01/28 01/28-02/04 01/28 02/04 01/28 02/04 01/28 02/04 01/28-02/04 I

05 06 02/04-02/11 02/04-02/11 02/04-02/11 02/04 02/11 02/04 02/11 07 02/11 02/19 02/11 02/19 02/11 02/19 02/11 02/19 02/11 02/19 08 02/19-02/25 02/19 02/25 02/19-02/25 02/19 02/25 02/19-02/25 09 02/25 03/04 02/25 03/04 02/25 03/04 02/25-03/04 02/25 03/04 I 10 11 12 13 03/04-03/12 03/04 03/12 03/04-03/12 03/04 03/12 03/04-03/12 03/12-03/18 03/12 03/18 a3/12 03/18 03/12 03/18 03/12 03/18 03/18 03/25 03/18-03/25 03/18 03/25 03/18 03/25 03/18 03/25 03/25-04/01 03/25 04/01 03/25 04/01 03/25 04/01 03/25 04/01 04/01 04/08 04/01 04/08 04/01 04/06 04/01-04/08 04/01-04/06 I

14 15 04/08 04/15 M/08-04/15 04/06-04/15 04/08 04/15 04/08-04/15 16 04/15 04/22 04/15-04/22 04/15 04/22 04/15 04/22 04/15 04/22 17 04/22 04/29 04/22 04/29 04/22-04/29 04/22 04/29 04/22 04/29 18 04/29-05/06 04/29-05/06 04/29-05/06 04/29 05/06 04/29-05/06 4

19 05/06-05/13 05/06 05/13 05/06-05/13 05/06-05/13 05/06-05/13 20 05/13-05/20 05/13 05/20 05/13 05/20 05/13 05/20 05/13 05/20 21 05/20-05/28 05/20-05/28 05/20-05/28 05/20 05/28 05/20 05/28 22 05/28-06/03 05/28-06/03 05/28 06/03 05/28 06/03 05/28 06/03 06/03-06/10 06/03 06/10 06/03 06/10 06/03 06/10 06/03 06/10 I

23 24 06/10 06/17 06/10-06/17 06/10 06/17 06/10 06/1T 06/10-04/17 25 06/17 06/24 06/17-06/24 06/17 06/24 06/17 06/24 06/17-06/24 26 06/24-07/01 06/24 07/01 06/24 07/01 06/24-07/01 06/24 07/01 27 07/01-07/08 C7/01 07/08 . 07/01 07/08 07/01 07/08 07/01-07/08 I 28 29 30 31 07/08 07/15 07/08 07/15 07/G8 07/15 07/08 07/15 07/03 07/15 07/15 07/22 G7/15-07/22 07/15 07/22 07/15 07/22 07/15-07/22 07/22-07/29 07/22 07/29 07/22 07/29 07/22-07/29 07/22 07/29 07/29 08/05 07/29-08/05 07/29 08/05 07/29 08/05 07/29 08/05 08/05-05/12 08/05 08/12. 08/C5-08/12 08/05 08/12 08/05 08/12 I

32 33 08/12-08/19 08/1'c-08/19 08/12-08/19 08/12 08/19 08/12-08/19 34 08/19 08/26 08/19-08/26 -08/19 08/26 08/19-08/26 08/19-08/26 35 08/26 09/03 08/26-09/03 08/26-09/03 08/26 09/03 08/26-09/03

.,6 09/03-09/09' 09/03 09/09 09/03 09/09 09/03 09/09 09/03 09/09 I 37 38 39 40 09/09 09/17 09/09 09/17 09/C9 09/17 09/09 09/17 09/09 09/17 09/17-09/23 09/17-09/23 09/17-09/23 09/17-09/23 09/17-09/23 09/23 10/01 09/23 10/01 09/23 10/01 09/23 10/01 09/U 10/01 10/01 10/07 10/01 10/07 10/01 10/07 10/01-10/07 10/01 10/07 41 10/07-10/14 10/07 10/14 10/07 10/14 10/07 10/14 10/07-10/14 42 10/14-10/21 10/14-10/21 10/14 10/21 10/14 10/21 10/14-10/21 43 10/21 10/28 10/21 10/28 10/21 10/28 10/21 10/28 10/21-10/28 44 10/28 11/04 10/28 11/04 _10/28-11/04 10/28 11/04 10/28 11/04 45 11/04 11/11 11/04-11/11 11/04 11/11 11/04-11/11 11/04-11/11 I 46 47 48 49 11/11 11/18 11/11-11/18 11/11 11/18 11/11 11/18 11/11 11/18 11/18 11/25 11/18 11/25 11/18 11/25 11/18-11/25 11/18-11/25 11/25 12/02 11/25-12/02 11/25 12/02 11/25 12/02 11/25-12/02 12/02-12/09 12/02 12/09 12/02-12/09 12/02 12/09 12/02 12/09 12/09-12/16 12/09 12/16 12/09 12/16 12/09-12/16 12/09-12/16 I

50 51 12/16-12/23 12/16 12/23 12/16-12/23 12/16 12/23 12/16 12/23 52 12/23 12/30 12/23 12/30 12/23 12/30 12/23-12/30 12/23 12/30

, I ,

C - 26

I TABLE C IX.1 SLMMARY OF COLLECT 10N DATES FCat $AMPLES COLLECTED IN THE VICINITY OF LIMERICK GENERATING STATION, 1991 I

CROUP !!!

CONTMCL LOCATIONS WEK 13M4 22G1 01 12/31-01/07 12/31-01/07 02 01/07 01/14 01/07-01/14 03 01/14 01/22 01/14 01/21 0; 01/22-01/28 01/21 01/28 05 01/28 02/04 01/28 02/04 06 02/04 02/11 02/04 02/11 07 02/11 02/19 02/11 02/19 06 02/19 02/25 02/19-02/25 09 02/25 03/05 02/25 03/04 10 03/05 03/11 03/04-03/12 11 03/11 03/18 03/12-03/16 12 03/18 03/25 03/18 03/25 13 03/25-04/01 03/25-04/01 14 04/01-04/08 04/91-04/08 15 04/08-04/15 04/08-04/15 16 04/15 04/22 04/15-04/22 17 04/22-04/29 04/22-04/29 18 04/29 05/06 04/29 05/06 19 05/06-05/13 05/06-05/13 20 05/13 05/20 05/13 05/20 21 05/20-05/28- 05/20-05/28 22 05/28-06/03 23 06/03-06/10 06/03 06/10 24 06/10 06/17 06/10-05/17 l 25 06/17-06/24 06/17 06/24 g 25 06/24 07/01 06/24 07/01 27 07/01-07/08 07/01-07/08 28 07/08-07/15 07/08-07/15 29 07/15 07/22 07/15 07/22 30 07/22 07/29 07/22-07/29 31 07/2?-08/05 07/29 08/05 32 08/05-08/12 08/05-08/12 33 08/12 08/19 08/12-08/19 I 34 35 08/19-08/26 08/19 08/26 08/26-09/03 08/26 09/03 3

36 09/03 09/09 09/03-09/09 37 09/09-09/16 09/09-09/17 38 09/16-09/23 09/17-09/23 39 09/23-09/30 09/23 10/01 40 09/30 10/07 10/01 10/07 41 10/07 10/15 10/07 10/14 42 10/15 10/21 10/14 10/21 43 10/21 10/28 10/21 10/28 44 10/28-11/05 10/28-11/04 45 11/05 11/12 11/04 11/11 46 11/12 11/18 11/11 11/18 47 11/18-11/25 11/18-11/25 48 11/25-12/02 11/25-12/02 49 12/02 12/10 12/02-12/09 50 12/10-12/16 12/09 12/16 51 12/16 12/23 12/16-12/23 52 12/23-12/30 12/23-12/30 I

C - 27

EsBLE M1 MVICl%ITY YCM ECT E TES @ t W LEC M tt*E M M E E E E E E E E OF LIMERICK GENE;ATING STATION, 1991

-TLD - MONTHLY JAN FEB NAR APR MAY JtlE JUL AUG SEP OCT NOV DEC STATIow 1991 1991 1991 1991 1991 1991 1991 1991 1991 1991 1971 1991 CIDE

....... ........... ........... ........... ........... ........... ........... .......... ........... ........... ........... .....~ .... ...........

3652 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 281 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/0; 05/07-06/04 06/04-07/02 07/02-08/06 0S/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2E1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 3S1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02 08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 4E1 01/02-02/05 02/05-03/05 03/05 04/02 04/02 05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07

$s1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 *?/03-01/07 5H1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02 11/07 11/07-12/03 12/G3-01/07 oct 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05r07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 7S1 01/02-02/05 02/05-03/05 03/05 04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 7El 01/02-02/05 02/05-03/05 03/05-04/02 04/02 05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 9c1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 1053 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 10E1 01/02-02/05 02/05-03/05 03/05-04/02 04/02 05/07 05/07-06/04 06/04-07/02 C7/02-08/06 08/06-09/04 09/0e 10/02 10/02-11/07 11/07-12/03 12/03-01/07 10F3 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04 07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 1151 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 13C1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 13E1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 13H4 01/07-02/11 02/11-03/11 03/11-04/08 04/08-05/06 05/06-06/03 06/03-07/08 07/09-08/05 08/05-09/09 09/09-09/30 09/30-11/05 11/05-12/10 12/10-01/06 1451 01/02 02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 1501 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 16s2 01/02-02/05 02/05-03/05 03/05-0&/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 16F1 01/02-02/05 02/05-03/05 03/05>04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 1781 01/02-02/05 02/05 03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 0'V06-10/92 10/02-11/07 11/07-12/03 12/03-01/07 1651 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 18G1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 1901 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2001 01/02-02/05 02e05-03/05 03/05-04/02 04/02-c5/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 20F1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 21S1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 22G1 01/02-02/05 02/05-03/05 03/05 04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2352 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 3401 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/ % 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 25s1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2501 01/02-02/05 32/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2653 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2681 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2802 01/02-02/05 02/05-03/05 03/05-04/92 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 29st 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 2991 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 291E1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07 06/04 06/04-07/02 07/02-08/06 08/06-0 V04 09/04-10/02 10/02-11/07 11/07~ 2/03 12/03-01/07 3101 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 3102 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 32s1 01/02-02/05 02/05-03/05 03/05-04/92 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 32G1 01/02-02/05 02/05-03/05 03/05-c' :2 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 3452 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 34E1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/M-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 3581 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 35F1 01/02-02/05 02/05-03/05 03/05-04/02 04/02-05/07 05/07-06/04 06/04-07/02 07/02-08/06 08/06-09/04 09/04-10/02 10/02-11/07 11/07-12/03 12/03-01/07 C - 28

I 1 TABLE C IX.1 SumARY OF COLLECTita DATES FOR SAMPLES COL'.ECTED IN THE VICINITT OF LIMERICK CEWERATING $TATION, 1991 JAW MAR APR JUN JUL $EP OCT DEC STATION 1991 1991 1991 1991 g CODE 3652 01/02-04/02 04/02-07/02 07/02 10/0J 10/02-01/07 2B1 01/02 04/02 04/02-07/02 07/02 10/02 10/02-01/07 f 8

2E1 01/02 04/02 04/02 07/02 07/02-10/02 10/02-01/07 351 01/02 04/02 04/02-07/02 07/02 10/02 10/02-01/07 4E1 01/02 04/02 04/02 07/02 07/02 10/02 10/02 01/07 551 01/02 04/02 04/02 07/02 07/02-10/02 10/02 01/07

$lti 01/02 04/02 04/02 07/02 07/02-10/02 10/02-01/07 6c1 01/02-04/02 04/02 07/02 07/02 10/02 10/02 01/07 751 01/02-04/02 04/02 07/02 07/02-10/02 10/02 01/07 7E1 01/02-04/02 04/02 07/02 07/02 10/02 10/02 01/07 9C1 01/02-04/02 04/02-07/02 07/02 10/02 10/02 01/07 1053 01/02-04/02 04/02 07/02 07/02 10/02 10/02-01/07 10E1 01/02-04/02 04/02-07/02 07/02-10/02 10/02-01/07 10F3 01/02-04/02 04/02 07/02 07/02 10/02 10/02-01/07 1151 13C1 01/02-04/02 04/02-07/02 07/02 10/02 10/02-01/07 01/02-04/02 04/02 07/02 07/02-10/02 10/02 01/0' l

g 13E1 01/02 04/02 04/02 07/02 07/02 10/02 10/02 01/07 13M4 01/07 04/08 04/08-07/08 07/08 09/30 09/30-01/06 14$1 01/02 04/02 04/02 07/02 07/02-10/02 10/02 01/07 1501 01/02 04/02 04/02 07/02 07/02 10/02 10/02 01/0' '

16s2 01/02 04/02 04/02-07/02 07/02 10/02 10/02 01/r/

16F1 01/02-04/02 04/02-07/02 07/02 10/02 10/02 01/or 1781 01/02-04/02 04/02-07/02 07/02-10/02 10/02 01/07 18s1 01/02-04/02 04/02 07/02 07/02 10/02 10/02 01/07 18G1 01/02 04/02 04/02 07/02 07/02 10/02 10/02-01/07 1901 01/02-04/02 04/02-07/02 07/02 10/02 10/02-01/07 2001 01/02-04/02 04/02 07/02 07/02 10/02 10/02 01/07 20F1 01/02-04/02 04/02-07/02 07/02-10/02 10/02-01/07 2151 01/02 04/02 04/02-07/02 07/02 10/02 10/02 01/07 22G1 01/02 04/02 04/02 07/02 07/02 10/02 10/02-01/07 23S2 01/02 04/02 04/02 07/02 07/02 10/02 10/02 01/07 2401 01/02-04/02 04/02-07/02 07/02 10/02 10/02-01/07 2551 01/02 04/02 04/02-07/02 07/02-10/02 10/02 01/07 E 2501 01/02-04/02 04/02-07/02 07/02 10/02 10/02 01/07 g 26s3 01/02-04/02 04/02 07/02 07/02 10/02 10/02-01/07 2681 01/02 04/02 04/02-07/02 07/02-10/02 10/02-01/07 .

22D2 01/02-04/02 04/02-07/02 07/02-10/02 10/02 01/07 !

29si 01/02-04/02 04/02-07/02 07/02 10/02 10/02-01/07

^

??B1 01/02 04/02 04/02-07/02 07/02-10/02 10/02-01/01 29E1 01/02-04/02 04/02-07/02 07/02 10/02 10/C -01/07 3101 01/02-04/02 04/02-07/02 07/02-10/02 10/02-01/07 3102 01/02 04/02 04/02-07/02 07/02-10/02 10/02-01/07 l 32s1 01/02 04/02 04/02 07/02 07/02 1r/02 10/02 01/07 3 32G1 01/02 04/02 04/02 07/02 07/02 10/02 10/02 01/07 3452 01/02 04/02 04/02-07/02 07/02-10/02 10/02-01/07 34E1 01/02-04/02 04/02 07/02 07/02 10/02 10/02-01/07 35B1 01/02 04/02 04/02-07/02 07/02-10/02 10/02-01,07 35F1 01/02-04/02 04/02-07/02 07/02-10/02 10/02 01/07 I

I C - 29 l

n..

FIGURE C-1 MEAN MONTHLY SOLUBLE GROSS BETA CONCENTRATIONS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LGS, 1982-1991 15

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l 82 83 84 85 86 87 88 89 90 91 YEAR

FIGURE C-2 MEAN MONTHLY INSOLUBLE GROSS BETA CONCENTRATIONS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF LGS, 1982 - 1991 15 -

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___L E h 82 83 84 85 86 87 88 89 90 91 YEAR ame uns aus amm aus um num sai uma men sus sus aus uma em asu amm aus use

ime aus mue uma man man muu man se seu aus sum num aus aus ums num au num-FIGURE C-3 MEAN MONTHLY SOLUBLE GROSS BETA CONCENTRATIONS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF LGS, 1982 - 1991 15

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0 LGS CRITICALITY UNIT NO.1: 12/22/84 l UNIT NO. 2: 08/11/89 l [ I T ! I I I ! k I - k ! ! f ! ! J Y - I i : I 82 83 84 85 86 87 88 89 90 91 4

YEAR i

FIGURE C-4 MEAN MONTHLY INSOLUBLE GROSS BETA CONCENTRATIONS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF LGS, 1982 - 1991 15 . . . . .

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82 83 84 85 86 87 88 89 90 91 YEAR num aus mas amm amm aus ami um um mai uma em um num aus as use uma mas

amm uma num 'une sus sus aus aus ' mas num aus uma som um er[ uma sus ums-FIGURE C-5 MEAN ANNUAL CS-137 CONCENTRATIONS IN FISH SAMPLES COLLECTED IN THE VICINITY OF LGS, 1982 - 1991 0.02 . . .

1

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O !, i i i 84 85 86 87 88 89 90 91 82 83 cournot = 2sc YEAR

FIGURE C-6 MEAN ANNUAL CS-137 CONCENTRATIONS IN SEDif.1ENT SAMPLES COLLECTED IN THE VICINITY OF LGS, 1982 - 1991 2

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. c; man uma sus - som uma amm :umm mas aus .aus em uma amm sur = mas ~ mun man amm aus-FIGURE C-7 MEAN WEEKLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF LGS,1991 40 ,

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FIGURE C-8 MEAN MONTHLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF LGS, 1982 - 1991 150 .

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sua mas num ami uma sus amm men sus em seus um aus aus num amm aus aus FIGURE C-9 COMPARISON OF POSITIVE MEAN MONTHLY CS-137 VALUES IN MILK SAMPLES COLLECTED IN THE VICINITY OF LGS, 1984-1991

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l l FIGURE C-10 MEAN MONTHLY AMBIENT GAMMA RADIATION LEVELS (TLD)

IN THE VICINITY' OF LGS, 1982-1991 13 l_

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83 84 85 86 37 88 89 90 91 82 YEAR um um nas ami um uma em em uma amm sus em ums mm num um nas sum num

I I

I DATA TABLES QC LABORATORY I

I I

I-I

I APPENDIX D: DATA TABLES AND FIGURES - COMPARISON LABORATORY TABLES Table D-1.1 Concentration of Gross Beta Soluble in Surface and I Drinking Water Samples Collected in the Vicinity of Limerick Generating Station, 1991.

I Table D 1.2 Concentrations of Gross Beta Insoluble in Surface and Drinking Water Samples Collected in the Vicinity of Limerick Generating Station, 1991.

l Table D-I.3 Concentrations of Gama Emitters in Surface and Drinkin Water Samples Collected in the Vicinity of Limeric Generating Station, 1991.

Table D-11.1 Concentrations of Gross Beta in Air particulate Sampics Collected in the Victntty of Limerick Generating Station, 1991.

Table D II.2 Concentrations of Gama Emitters in Air Particulate Samples Collected in the Vicinity of Limerick l Table D-III.1 Generating Station, 1991.

Concentrations of I-131 by Chemical Separation and M Gama-Emitters in Hilk Samples Collected in the E Vicinity of Limerick Generating Station, 1991.

Table D-IV.1 Sumary of Collected Dates for Samples Collected in the Vicinity of Limerick Generating Station, 1991.

I FIGURES figure 0-1 Weekly Gross Beta Concentrations in Air Particulate Samples Collected from LGS Locations 1151 and 1152, 1991.

I Figure D 2 Weekly Gross Beta Concentrations in Air Particulate Samples Collected from LGS Locations 14S1 and 14S2, 1991.

3 I

LI L

l.

I The following section contains data and fi ures illustrating the .

analyses performed by the quality control aboratory. Duplicate samples !

were obtained from several locations and media and split between the al primary laboratory, Teledyne Isotopes (11) and the quality control g!I laboratory, Public Service Electric & Gas Co. (PSE&G). r,omparison of the results for most media were within expected ranges, though oc.

casional differences were seen: g PSE&G's results of gross beta insoluble in surface and drinking water samples (Table D-I.2) were generally lower than the results from 3 Teledyne Isotopes (Table C-1.2, Appendix C). The differences were 3 probably due to differences in the respective laboratory's analytical ptocedures. PSE&G ashes the sample prior to counting whereas, 11 does not. l PSE&G's gross beta results for air par ticulate samples were higher than TI's results, but the trends were similar for both laboratories (Figures E D-1 and D 2). PSE&G uses Sr 90 as a calibration soerce whereas, TI uses N Cs-137.

I E

I I

I I.

D-1 g

.n

l I TABLt 0 1.1 COWCirikAflONS DF f.Ross BITA SOLUBLt ik SUtf ACE AWD OtlNKING WAf tR LAMPLt$

COLLEC1[D IN THE YlCINIf f 07 LinrRICK GthtLAilWG $1 AllCW,1991 tisutil IN Lhlf $ W PCinlitt a 2 $1CMA COLLEC110N 1072 16C2 Pit!00 I

(1)

NAT 91 4.5 s 0.8 1.8 s 0.6 I JUN 91 JUL 91 AUG 91

$tP 91 5.6 3.9 2.4 3.1 s 0.8 0.7 s 0.6 a 0.6 3.1 3.1 2.7 3.7

0.6 a 0.6 0.6 a 0.7 4.1 a 0.7 3.0 s 0.7 I

OCT 91 NOV 91 4.0 a 0.7 3.1 s 0.6 Dtc 91 0.7 s 0.5 0.5 s 0.4 MEAN 3.5 a 3.0 2.6 s 2.0 I 1A8tt Dal.1 CCelttwitAt10NS OF GROSS BffA lWSOLLSLE IN SURFACE MD DRINKINC WATER SAMPLES COLLECTED IN ikt VICINITT OF LIMERICK GtWitATING STATION, 1991 I COLLECTION 10r2 RESUti$ IK UNiit OF PCl/Llitt a 2 SIGMA 16C2 PERICD (1)

I MY 91 JUN 91 JUL 91 AUG 91 1.9 0.1 0.0 0.1 s 0.5 a 0.4 s 0.4 a 0.4 0.2 0.0 0.1 0.0 a 0.4 a 0.4 a 0.4 s 0.4 SEP 91 0.3 a 0.4 -0.1 a 0.4 I OCf 91 NOV 91 DEC 91 0.0 0.2 6.7 s 0.4 a 0.4 a 0.9 0.2 0.1 2.1 a 0.4 a 0.4 a 0.6 I MEAN 1.1 s 4.8 0.3 a 1.5 (1) stt PROGRAM CHANGES FOR EXPLANAfl0N lI I

l D-2

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I TABLE Dall 1 C:n.CENTRAtltml Of GRost of ta fu AIR PARIICULAT( SA*81T 00tittifD IN INC VICIWilf 0F LIMERitt CthitAllWC $1A110k, 1N1 I VEtt 1152 SESut15 16 4*lts of E-3 PCl/Cu. M11ta e 2 sicMA 1452 (1) 22 23 a3 21 23 23 1T 2 16 a2 I 24 25 26 27 22 16 17 21 e3 s2 e3 2

19 17 17 21 t3 a3 a3 3

28 22 e3 23 a3 29 28 a3 27 s3 30 22 s3 24 a3 31 26 a3 24 a3 32 29 3 24 a3 I 33 34 35 36 26 20 24 26 s3 a3 a2 t3 24 21 74 25 a3 a3 e2 a3 37 27 a3 26 s3 38 35 t3 32 e3 39 18 e2 20 s2 40 22 e3 28 3 41 23 s3 24 a3 42 20 a3 22 s3 43 34 a3 35 a3 44 2T a3 25 a3 45 34 a3 35 a3 46 24 a3 29 a3 I. 47 45 49 18 24 27 s3 a3

3 17 23 28

3 s3 s3 50 31 a3 31 s3 I $1 52 MEAN 25 21 24 a3 a3 e 10 23 23 24 a3 e3 a 10 I

(1) set PROCRAM CNAW ES FOR EXPLANATION I

i I

l l

t D-4 I

I TABLE L l!.2 COktENTRAfl0WS OF GAPMA (M11TDS I4 Alt I AtilWLAf t LAXPitt 1

COLLECTLD IN THE VIClkITT OF L!MIRICC (,!WERAflhG $1A110N, 1991 RESULTS Ik UWill 0F E 3 PCl/CU. METER 2 slGMA I COLLittl0W BI 7 t 40 Ci 134 CS 137 RA 226 IN 228 E

$1C PERICD 1152 05/28 07/01/91 80 10 < 20 4 0.6 < 0.3 < 2 < 7 07/01 10/01/91 54 :$ < 10 < 0.1 < 0.2 < 0.6 < 2 3 10/01 12/30/91 50 a5 < 10 < 0.2 < 0.2 < 0.5 e i g MEAN 61 a 30 < 10 < 0.3 < 0.2 < 1.0 < 3 1452 05/28 07/01/91 70 a9 27 :B < 0.3 < 1.0 < 2 < 2 07/01 10/01/91 57 8 < 7 < 0.2 < 0.3 < 0.7 < 1 10/01 12/30/91 52 6 < 10 < 0.2 < 0.3 < 0.7 < 1 MEAN 60 a 17 16 a 21 < 0.2 < 0.5 < 1.1 < 1 (1) SEE PROGRs* CHANGts FOR EXPLANAfl0N I

E I

D 1

0-5 I,

l

I l

I TABLE D Ill.1 CCWCthitA110WS OF I-131 PY CEtulCtt stPARAf tcw AWD f.sJe4A f ulf f tt$ lu MILL EAMPLil COLLECifP !# THE VIClklif Of LIMttlCE MNI AA11WG $1A110W, 1971

' I $ic COLLECTION ktEUL18 IN LMill of PCl/(litt t 2 $1CAA Ptit t 0D l*131 K*s0 CS 134 CS 13' EA 140 LA 140 I 1991 07/02 07/02/91 10/06 10/08/99

< 0.4

< 0.1

< 9.3 1380 e 60 1310 4 80 1350 e 1to

< 1.0

< 1

< 1.0

< 4

< 0.8

< 2.4

< 0.1

7

< 3.6

< 2

< 3

< 3 Mt AN l I 2181 07/02 07/02/*1 10/08 !0/D8/91

< 0.2

< 0.2 1100 a 70 1430 t 90

< 0.8

<2

< 2

< i.0

< 0.9

< 6

< 1

< 2 MtAN < 0.2 1270 : 470 < 1.4 = 1.$ < 3.$ < 2 I 22F1 01/02 07/02/91 10/08 10/ M/91

< 0.4

< 0.3 1390 e 60 1300 s 90

< 1

< 0.9

< 3

< 7

< 1

< 3 ;

MEAN < 0.4 1350 s 130 < 1.0 < 3 < 5 < 2 I

I I

l l D-6 lI

I 1Att! 0 IV.1 OumOf 0F COLLECilCW CATES f 0R LAMPLES COLLttito IW THE VICthiff Of LINEAICK OtWERAf tkG $1 A11CW,1M1 S'JTACE AND OtlWKlW3 PAf tt E COLLECil0W 1072 16C2 PIRIOD .

..... .... ............. ............. <l mt 91 04/29 05/28 04/29 05/23 I JUN 91 05/2s 06/24 05/28 06/24 I JUL 91 06/24 07/29 06/2rr07/29 AUG 91 07/29 08/27 07/29 08/27 stP 91 08/27 09/27 08/28 09/27 OCT 91 09/27 10/29 09/27 10/29 WOV 91 10/29-11/25 10/29 11/25 Ott 91 11/25 12/30 11/25 12/30 I

Alk PARTICULAft 1$ 1482 22 05/2P 06/03 05/28 06/03 23 06/03 06/10 0(/03-06/10 24 06/10 06/17 06/10 06/1T 25 06/17 06/24 04/17 06/24 26 06/24 07/01 06/24 07/01 27 07/01 07/08 07/01 07/08 28 07/08 07/15 07/08 07/15 29 07/15 07/22 07/15 07/22 30 07/22 07/29 07/22 07/29 31 07/29 08/05 07/29 08/05 32 08/05 08/12 08/05-08/12 33 08/12 08/19 08/12 08/19 34 08/19 08/26 08/19 08/26 35 08/26 09/03 08/26 09/03 36 09/03 09/09 09/03 09/09 37 09/09 09/17 09/09 09/1T h 38 09/17 09/23 09/17 09/23 g 39 09/23-10/01 09/23 50/01 40 10/01 10/07 10/01 10/07 41 11/07 10/14 10/07 10/14 42 10/14 10/21 10/14 10/21 43 1C/21 10/28 10/21 10/28 44 10/28 11/04 10/28 11/04 45 11/04 11/11 11/04 11/11 46 11J11 11/18 11/11 11/18 l g

47 11/18 11/25 11/18 11/25 48 11/25 12/02 11/25 12/02 49 12/02 12/09 12/02 12/09 SC 12/09 12/16 12/09 12/16 51 12/16 12/23 12/16 12/23 52 12/.M 12/30 12/23 12/30 I

D-7 g a_

= ,

sua sum uma sus uma muu num mum uma man sun sus man sum - sun uma uma mum sums i

I FIGURE D-1 MEAM WEEKLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED FROM LGS LOCATIONS 11S1 AND 11S2,1991 50 1

+ 11S1 - Tl l

,40 -

11S2 - PSEG

f O .

E j\ p\ f-

-i \.

y 30 -

- f s"3 q 1/-\

20 -

o 3

m

--c- Qu-- Jr0> {

10 b

l l l l 'l ! ! l l ,

0 , 'l l '!' i l 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 1 4 WEEK NO.

FIGURE D-2 MEAN WEEKLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED FROM LGS LOCATIONS 14S1 AND 14S2,1991 50 i

+ 14S1 - Tl 40 - .

14S2 - PSEG - .- -

5 5 -

OQ E

o 30 -

1

- lI

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~3 t -

ci

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8 % \,

e 10 -

a '

um -

0 , ! ';' l l l!l' l l 'I' l, ! 'l l

1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 WEEK NO.

,I I

I I

l SYNDPSIS OF ANALYTICAL PROCEDURES I

I I

I

~

I I APPENDIX E: SYNOPSIS OF ANALYTICAL PROCEDURES The following section contains a description of the analytical laboratory procedures along with an explanation of the analytical calculation methods used by Teledyne Isotopes and Public Service Electric & Gas to obtain the sample activities.

I I -

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I l E-1 I

E - _

I DETERMIMAfl0N OF GROSS BETA ACTIVITY IN WATER SAMPLES (hTAL SUSPEf DED AND DISSOLVED FRACTIONS)

Teledyne Isotopes This describes the process used to measure the radioactivity of water samples without identifying the radioective species prestnt. No chemic61 tenaration techniques are involved.

l For surface and drinking water sateples, one liter of the sample is filtered under vacuum through a 0.45 micron M1111 pore filter. This filter represents the insoluble portion of the sample. The filter is dried and mounted on a planchet. The filter which represtnts the soluble portion of the sample is evaporated on a hot plate, and the residue is transferred and dried on another planchet.

The planchets are counted for 50 r"nutes in a low-bcekground gas flow proportional counter. Calculation of activity includes a self-ebsorotion correction for counter efficiency based on the weight of residue on each 3 planchet. E Calculation of Sample Activity and 2 Sigma Error:

Resul t (pC.f /l) t (2. 22) ( v) (E) 2 h

.a . 2 t3 (2.22) (v) (E) t I Net Activity Counting Error where:

N - total counts from sample (counts) l t = counting time for sample (min)

B = background rate of counter (cpm) 2.22 - dpm/pCi y = volume in liters E - efficiency of the counter 2 = multiple of counting error The MDL is defined as that value equal to the two sigma counting error of the g result. Less than MDL is reported as the result when this value is greater than the measured result defined above.

I I

E-2 g I.

I DETERMINATION Of GROSS BETA ACTIVITY IN WATER SAMPLES (TOTAL SUSPENDED AND DISSOLVED FRACTIONS)

Egblic Service Electric & Cas l This describes the process used to measure the overall radioactivity of water saniples without identifying the radioactive species present. No chemical separation techniques are involved.

The sample is mixed thoroughly. Then, a 1.0 liter portion is removed from the surface or drinking wuer container and filtered through a slow, hardened ashlese filter paper n.ounted in a Buchner funnel. The filter paper is removed I from the Buchner funnel, folded into a triangle, placed in a covered porcelain crucR'a and heated over a Bunsen burner until completely charred. The cructi'.e is then ashad fur at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> in a muffle furnace at 500' C.

I The cooled ash is then transferred to a tared stainless steel ribbed planchet using a rubber policeman with laboratory aerosol and reagent water.

The filtrate portion of the sample is evaporated on a hot plate until the I volume approaches 20 to 25 ml. At that point, the filtrate is transferred to a tared stainless steel ribbed planchet. Both planchets are evaporated to dryness undar an infrared heat lamp. They are subsequently cooled in a I desiccator, weighed and :.ounted using a low background gas proportional counter.

Calculdion of Samole Actly11Y 8All.96 Sicma Error:

C8 - _k 1.96 b+b Result ,

Te T3 h Te* T$

(pCl/l) 2. 22 ( v) (R) 2. 22 (v) (B)

I Net Activity Counting Error total gross sa;:le counts (counts)

I C, -

T, - sample count timo (nin)

C3 - total background count (counts)

T3 = background count time (min)

E = t.ounting efficiency based on Sr-90 for the weight of planchetted sample v - aliquot size in liters I 2.22 1.96

=

dpm per pCi multiple of counting error The MDL is defined as that value equal to the 1.96 sigma counting error of the I result. Less than MDL is reported as the result when this value is greater than the net activity.

l E-3 I

I DETERMINATION OF TRITIUM IN WATER BY ELECTROLYTIC ENRICHMENT AND LIQUID SCINTILLATION COUNTING Teledync Isotopes I

A 60 mi aliquot is distilled and collected in an Erlenmeyer flask.

Approximately 55 g of the distillate is transferred into an electrolytic enrichment cell. One ml of 30% sodium hydroxide solution is added to the l

cell. The sample is electrolyzed in a 10' C cooling water bath until the volume is 3 4 ml. C0 is bubbled through the solution to neutralize the sodium h droxide. Th,e sample is transferred to a collecting bottle at 80" C and weig ed. It is then transferred into a licuid scintillation vial and 20 ml of cocktail is added. The sample is counted for 100 minutes in a liquid scintillation counter.

Determination of the Enrichment Factor:

(fin 1 v lume)( hserved dpm/ml)

EnrichmentFactor ,

(initial volume) (standard dpm/ml)

Aliquots of a tritium standard solution have been enriched to different final volumes to provide a grcph of the enrichment factor versus the final volume.

Calculation of Say le Activity and 2 Siama Error:

S-p 2 U+S Result

t h t3 C (pCl/l) 2. 22 ( v) (EF) (ID 2. 22 ( v) (EF) (E) g 5

Net Activity Counting Error where:

N - total counts from sample (counts) t - counting time for sample (min)

B - background rate of counter (cpm) 2.22 - dpm/pCi V -

initial volume (in liters) before enrichment EF = enrichment factor .039 x VF + .603 where VF - Final Volume E - efficiency of the counter tritium g 2 - multiples of counting error 3 The MDL is defined as u.P. value equal to the two sigma counting error of the result. Less than MDL is reported as the result when this value is greater than the net activity.

E-4 g w . - _ - - -

I I DETERMINATION OF GROSS BETA ACTIVITY IN AIR PARTICULATE SAMPLES Teledyne Isotopes This describes the process used to measure the overall beta activity of air I particulate filters without identifying the radioactive species pt esent. No chemical separation techniques are involved. Each air particulate filter is placed directly on a 2-inch stainless steel planchet. The planchets are then I counted for beta activity in a low-background gas flow proportional counter.

Calculation of activity includes an amoirical self-absorption correction curve which allows for the change in effective counting efficiency caused by the residue mass. Self-absorption is not considered in the case of air I particulate filters because of the impracticality of accurately weighing the deposit and because the penetration depth of the deposit into the filter is unknown.

Calculation of _S3m21e m Activity and 2 Siama Error:

Result,

~0 h i (pcl/m 3) 2. 22 (v) (E) ( . 02832) 2. 22 ( v) (r) ( . 0283 2 )

Net Activity Counting Error total counts from sample (counts)

I N -

t - counting time for sample (min)

B - background rate of counter (cpm) 2.22 - dpm/pci l v -

volume of sample analyzed in cubic feet calculated from the elapsed time meter efficiency of the counter E

2 - multiple of counting error I. .02832 - conversion to cubic meters The MDL is defined as that value equal to the i.wo sigma counting error of the I result. Less than MDL is reported as the result when this value is greater than the net activity.

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I l E-5 I

I E

DETERMINATION OF GROSS BETA ACTIVITY IN AIR PARTICULATE SAMPLES Public service Electric & Gas After allowing at least a three-day (extending from the sample stop date to l the sample count time) period for the short-lived radionuclides to decay out, l each air particelate filter paper is placed in a 2-inch diameter stainless l steel planchet and counted using a gas proportional counter. I Calculation of Samoltfetivity and 1.96 Sicma Errgr:

Il b_b 1.96 b+b I

Resul t ,

T, Ts % T,' Tl g (pcj/m 2) 2. 22 (vi (E) ( . 02 83 2) 2. 22 ( v) (E) ( . 02 832 ) E Net Activity Counting Error where:

C - total gross sample counts (counts)

T, - sample count time (min)

C, - total background count (counts) 3 T3 - background count time (min)

E = counting efficiency based on Sr-90 v - sample volume in cubic feet calculated from the elapsed time meter readings and the flow rate

.02832 - conversion to cubic meters 2.22 - dpm/p;i 5 1.96 - multiple of the counting error E The MDL is defined as that value equal to the 1.96 sigma counting error of the B resul t . Less than MDL is reported as the result when this value is greater s than the net activity.

I I

E-6

_I

I I DETERMINATION OF 1-131 IN MILK AND WATER SAMPLES leledvnq Isotop11 Two liters of sample are first equilibrated with stable iodide carrier. A i

e batch treatment with anion exchange resin is used to remove iodide from the sample. The iodine is then stripped froc, the resin with sodium hypochlorite, B reduced with hydroxylamine hydrochloride, and extracted into carbon tetrachloride as free iodine. It is then back-extracted as iodide into sodium

.E bisulfite solution and is precipitated as palladium iodide. The predpitate IE is weighed for chemical yield and is mounted on a nylon planchet for low level beta counting. The chemical yield is corrected by measuring the stable iodide content of the milk or water with a specific ion electrode.

Calculation of the Samole Activity and 2 Siama Error:

I .e a 2

\

.x3 .1 Resul t t t t (PCl/l) (2. 22) (v) (E) (y) (exp4' * ) (2. 22) (v) (E) (y) (exp')

Net Activity Counting Error I where:

N - total counts from sample (counts) t - counting time for sample (min)

= background rate of counter (cpm) 2.22 - dprn/pCi g y - volume of sample analyzed (liters)

B y - chemical yield of the amount of sample counted 1 - is the radioactive decay constant for 1-131 (0.693/8.05)

At - is the elapsed time between . ample collection (or end of the l 2 E

senple collection) to the midcount time muttiple of the counting error efficiency of the counter for 1-131, corrected for self

>g absorption effects by the formula:

I g , g* ((expexp-0""*0u'*)

)

l where:

E, - efficiency of the counter determined from an 1-131 standard mount I H M,

=

mass of Pdizon the sample mount (mg) mass of Pdi, on the standard mount (mg)

The MDL is defined as that value equal to the two sigma counting error of the I result. Less than MDL is reported as the result when this value is greater than the net activity.

l E-7

.I

DETERMINATION Of I-131 IN MILK AND WATER SAMPLES Eghlic Service Electric & Gas Stab?e iodine carrier is equilibrated in a 4-liter volume of raw milk before a two separate 50 m1 batches of snion exchange resin are introduced to extract gi iodine. After each batch has been stirred in the milk for an appropriate timo, both are then transferred to an aluminum sample can where the resins are rinsed mth demineralized water several times and any leftover rinse water l remcved with an aspirator stick. The can is hermetically sealed and then a counted on a gama detector.

Calculation of the Samole Actiy_11y and 1.96 Siama Error: l

(.b $?) (1.05) 1.96 -

T,j + Ts (1. 05 )

_Resul t ,

T, Ts )

(pCl/l) (2. 22) (v) (E) (y) (exp-l'*) , (2. 22 ) ( v) (E) (y) (exp")

1 Net Activity Counting Error l, where:

C - total gross sample counts 3, counts)

T,, - sample count time (min)

C3 - total background count time (counts) g Tb - background count time (min) 3 E - counting efficiency for 1-131 y - aliquot analyzed (liters) y - iodine yield E 1 - is the radioactive decay constant for 1-131 (0.693/8.05) E at - is the elapsed time between sample collection (or end of the sample collection) to the midcount time 3 1.05 - Correction factor for protein-bound iodine u 2.22 - dpm/pti 1.96 - multiple of counting error The MDL is defined as that value equal to the 1.96 sigma counting error of the result. Less than MDL is reported as the result when this value is greater than the net activity. l I

1 E-8 g l

-am l

lI I DETERMINATION OF GAMPA EMITTING RAD 10lS0 TOPES Teledyne isotopes Ganrna emitting radioisotopes are determined with the use of a lithium drifted germanium (GoLi) and high purity germanium detectors with high resolution spectrometry in specific media; such as, air particulate filters, charcoal filters, milk and water. Each sample to be assayed is prepared and counted in I standard geometries such as one liter wrap-arcund Marinelli containers, 300 ml or 150 m1 bottles, or 2-inch filter paper saurce geometries.

Samples are counted on large (>55 cc volume) GeLi detectors connected to I Nuclear Isita 6620 data acquisition and computation systems, All resultant spectra are stored on magnetic tape.

I The analysis of each sample consists of calculating the specific activities of all detected radionuclides or the detection limits frcm a standard list of nuclides. The GeLi systems are calibrated for each standard geometry using I certified radionuclide standards traceable to the National Bureau of Standards, falC#14.11gn of the Samole Activity and 2 Siama Error:

___, Result ,

Nw -Dw pd (2.22) (v) ( t) (Eg ) (BJg ) (eg%")

( vol - raass)

Net Activity I , 2Pm

Dw (2.22) (v) ( c) (Em ) (BIm ) (eg%)

I Counting Error

I N g3 = area, in counts, of a special region containing a gamma emission of the nuclide of interest I NOTE: If the detector exhibits a peak in this region when counting a blank (i.e., from natural background (B)(t) is subtracted from N before using the above equation. B is the count rate of the blank, cpm, in the background peak.

I l E-9 I l

I Bg ;3 - background counts in the region of interest, calculated by fitting a straight line across the region connecting the two adjacent region. 3 2 - multiple of counting error 5 2.22 - dpm/pci v = volume or mass of sample analyled t

E,33 counting interval of sarr.ple, minutes efficiency of counter at the energy region of interest l Bi c;> - branching intensity of the nuclide at the gamma emission energy under consideration E i

gj3 is the radioactive decay constant for nuclide g;3 (0.693/nuclide E half life) at - is the elapsed time between sample collection (or end of the sample collection) to the midcount time The MDL is defined as that value equal to the two sigma counting error of the result. Less than MDL is reported as the result when this value is greater than the measured result defined above. l I

I I

I a

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E - 10 g I

I I DETERMINATION OF GAMMA EHITTING RADIO!S0 TOPES Public Service Eiegiric _& Cas The procedure for detection of gama emitting radioisotopes generates high I resolution gama spectra which are used for quantitative detemination and identification. Standard geometries have been established to maximize air particulate filters, water, and milk.

ef ficiency, for sample types:

\I A description of the analytical methods, beginning with air particulates used for each sample type is presented, followed by the general formula used for calculation of the samph' activities.

Air particulate: At the end of each calendar quarter,13 weekly air filters from a given location are stacked in a two inch diameter Petri dish in I chronologict.1 order, with the oldest filter at the bottom, nearest the detector, and the newest one on top. The Petri dish is closed and the sample counted.

Water and Hi'.'k: A well-mixed 3.5-liter sample is poured into a calibrated Marinelli beaker. The samples are brought to ambient temperature and counted.

Calculation of the Sample Activity and 1.96 Siama Error:

Result ,

N<ss ~ Bt3, PCI _. (2.22) (v) ( c) (E,ji) (DI j> ) (exp'Au) g

( vol - mass)

Net Activity I 1. 96 g/Ngp + Bgy, l (2.22) (v) ( e) (Etj>) (BIgj3) (exp uiat)

-A Counting Error I , ,

aru, in counts, of a special region containing a gamma emission of the nuclide of interest Aon If the detector exhibits a peak in this region vian counting a I- ,

blank (i.e., from natural background (8)(t) is subtracted from N before using the above equation. 8 is the count rate of the blank, cpm, in the background peak.

I l E - 11 I

Il l B cj3 = background counts in the region of interest, calculated by fitting a straight line across the region connecting the two Il adjacent region. Rl 1.96 2.22

=

multiple of counting error dpm/pci Rl y = rrime or mass of sample analyzed an I t

E

=

counting interval of sample, minutes efficiency of counter at the energy region of interest l<

Bi33 c;3

branching intensity of the nuclide at the gama emission energy under consideration (no. of photons per disintegration) E i gj3

is the radioactive decay constant for nuclide;3 (0.693/nuclide M c

half life)

At - is the elapsed time between sample collection (or end of the sarrple collection) to the midcount time The MDL is defined as that value equal to the two sigma counting error of the resul t. Less than MDL is reported as the result when this value is greater than the measured result defined above. l I

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a I

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E - 12 g I_

I ENVIRONMENTAL DOS 1HETRY Igledyne isotoon Teledyne Isotopes docimeters are rectangular teficn wafers impregnated with 25% CaSO4:Dy phosphor. They are annealed in a hot air oven prior to use and l are inserted into black polyethylene pouches. The filled pouches are labelled and placed in rectangular holders which contain copper si,leiding to filter out low energy radiation. After exposure in the environment, four separate areas I of the dosimeter are read in a Teledyne Isotopes model 8300 TLD reader.

dosimeter is then re-irradiated by a standardized Cs-137 source and the four areas are read again. Calculation of the environmental exposure is performed The by computer, using the re-irradiation readings to determine the sensitivity of i

I each area of the dosimeter. The reading of control dosimeters are subtracted to allow for transit dose and system background.

I A. For any given area of the dosimeter, the dose mR is calculated by the formula:

Dose = (R) ( ') (a vcon t;rol)

I where:

I R RR redose initial reading of the area second reading of the area (after re-irradiation) re-irradiation dose in mR avcontrol - average of control values calculated as explained below.

I no controls are used, avcontrol - O and gross exposures result If B. Each area of each control is calculated by the formula:

cdose = (cr) ( C#8d 88) where:

cdose - control area dose in mR I cr crr credose initial reading of the control area second reading of the control area (after re-irradiation) re-irradiation dose of the control dosimeter in mR I

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I The average of control vr. lues is then calculated from all four areas of all controls by the formula:

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=

[cdose avcontrol 4, where:

I N = total number of control dosimeters C. The average and standard deviation of the area readings for each D.

dosimeter are calculated by standard methods.

Using ths criteria that if one standard deviation is greater than 10% of l

the average of the four readings and that if the value of one area is g outside the range of 3 standard deviations of the average c' the other 3 three areas, then that area will be eliminated and the results will be based on the remaining areas.

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l EPA INTER-LABORATORY COMPARISON PROGRAM QUALITY CONTROL I

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I I AFPENDIX F: QUAlllY CONTROL PROGRAM Teledyne isotopes (TI) and Public Service Electric & Gas (PSE&G) participate I in the EPA Radiological Inter-laboratory Comparison (cross check) Program.

This participation includes a number of analyses on various sample media as found in the Limerick Generating Station REMP. As a result of this I participation, en objective measurement of analytical precision and accuracy as well as, a bi*s estiftation of the results are obtained.

, I Examination of the data shows that the vast majority were within the EPA control limits. Each case of exceeding the control limits was investigated.

There was no evider:e to suggest systematic errors.

The results of TI's and PSE&G's participation in the EPA cross check program can be found in Tables F-1 and F-2, respectively.

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TABLE F-1 USEPA INTER-LABORATORY COMPARISONS - 1991 TELEDYNE ISOTOPES Collection Segence fetedyne Wonmet tred Deviatim Ati Participan*e Date No. Medle nuclide EPA Resulte(s) Isottpes Resulte(b) Grarti Avg. h Mean a 2 s.d.

01/41/91 561 unter Sr-89 5.00 e 8.d 5.00 e 0.00 -0.08 0.00 5.0 s 3.58 se-90 5.00 e 8.66 5.00 a 0.00 0.05 0.00 5.0 a 3.G2 09/25/91 560 Water Groes Alphe 5.00 s 8.M 9.00 a 3.00 1.15 1.39 5.69 s 3.58 Grose sete 5.00 8.66 7.00 e 0.00 0.24 0.69 6.30 a 3.02 02/08/91 565 Water co-60 40.0 e 8.66 39.33 9.18 -0.24 -0.23 40.04

5. 74 Zn-65 149.0 s 25.98 147.00 m 3.00 -0.31 -0.23 149.71 21.36 au-106 156.00 a 32.91 176.67 : 57.68 -1.38 -0.85 191.83 a 39.M Be-133 75.0 a 13.86 75.67 e 16.53 0.33 0.14 74.14 e 11.72 Co-134 8.0 a 8.66 7.33 e 1.74 -0.26 -0.23 8.09 a 3.95 Co-137 8.0 s 8.66 7.67 m 9.63 -0.48 -0.12 9.06 e 3.18 02/15/91 563 Water 1-131 75.0 e 13.86 80.00 a 15.87 0.65 1.08 77.00 s 11.78 02/22/91 564 Water N-3 4418.0 a 765.6 4500.0 a 519.63 0.24 0.32 4437.54 a 665.58 03/29/91 568 Air Filte* Gross Alphe 25.0 a 10.39 42.67 s 1.74 (c) 3. 73 5.10 29.73 e 11.86 Grees sete 124.0 a 13.39 126.67 e 11.54 -0.99 0.77 130.11 e 27.20 sr-90 40.0 e 8.66 37.00 a 3.00 -0.80 -1.04 39.30 e 10.42 Co-137 40.0 e 8.66 43.00 a 15.87 -0.56 1.04 44.61 a 15.24 04/16/91 570 veter Gross Alphe 54.0 a 24.25 59.67 e 12.12 1.23 0.70 49.71 > 22.86 O b Perf. Groes Beta 115.0 a 29.44 110.00 a 0.00 0.14 -0.51 108.60 t 27.74 sr-89 28.0 2 8.66 31.00 a 3.00 1.82 1.04 25.74 a 12.90 sr-90 26.0 t 3.66 21.00 t 0.00 0.90 1.73 23.61 a 6.54 Cs-134 24.0 a 8.66 25.00 t 3.00 0.71 0.35 22.% a 4.12 Co-137 25.0

8.66 b.00 a 5.19 -0.52 -0.35 25.49 s 4.23 04/26/91 5 71 milk $r-80 32.0 e 8.66 24.00 e 9.00 (d) -1.06 -2.77 27.t7 a 15.06 sr-90 32.0 s 8.66 25.33 e 6.24 -0.59 - 1.% 28.C $ 10.28 1-131 60.0 2 10.39 53.33 e 6.93 -2.26 -1.92 61.1,' e . 11.58 Co-137 40.0 a 8.66 52.67 t 4.59 0.46 1.27 51.'J5 a r.46 E 1650.0 a 143.76 1590.00 s 245.55 -1.32 -1.25 1653.09 e 324.44 F-2 I m m m m m m m m m m m m m m m m m m

TABLE F-1 USEPA INTER-LABORATORY COMPARISONS - 1991 TELEDYNE ISOTUPES

~'

totlection secpnce veteer.e morantized Devist6cn ati recticipants Date No. IIedia Rutlide UA Results(a) Isotopes Results(b) Grard Avg. Enceet 94ean a 2 s.d.

05/10/91 572 Water sr-P9 39.0 e 8.66 38.67 a 13.53 0,43 -0.12 37.43 a 16.54 Sr-90 24.0

8.66 22.00 2 5.19 -0.64 -0.69 23.85 s 6.04 05/17/91 569 W ,ter Cross Alp % 24.0 e 10.39 2b33 s 7.56 0.98 0.10 20.94 2 13.26 Gross Bett 46.0 a 8.66 50.33 a 3.06 1.94 1.50 44.73 e 15.46 -

01/07/91 57: Water co-60 10.0 e 8.66 10.33 s 1.74 -0.12 0.12 10.69 s 4.6*.

2n-6% 108.0 e 19.05 106.00 s 7.95 -0.56 -0.31 109.54 a 16.26 Re- W6 149.0 t 25.98 136.67 e 11.37 -0.56 -1.42 141.48 a 28.16 Go 153 62.0 m 10.39 56.33 e 4.59 -1.45 -1.64 61.37 e 10.96 co-134 15.0 e 8.66 13.67

4.59 -0.19 -0.46 14.20 a 4.04 cs-137 14.C e 8.66 13.67

4.59 -0.59 -0.12 15.37 a 3.92

% /31/91 574 Wrter N-3 12480 m 2*61.M 12833.33 s 346.50 0.55 0.49 12434.92 e 1881.62 08/09/91 576 Water I-131 20.0 e 10.39 19.33 e 1.74 -0.47 -0.19 20.M s 6.04 08/fo/91 580 Air Filter cross Alpha 25.0 e 10.39 27.00 a 6.00 -0,is 0.58 28.33 a 10.06 Gross Beta 92.0 t 17.32 100.00 e 0.00 0./7 1.39 95.54 a 18.08 Sr-90 30.0 t 8.66 27.67 e 8.67 -0.50 -0.81 29.11 7.8+

cs-137 30.0 s 8.66 33.33 s 9.63 0.30 1.15 32.48 e 10.76 09/13/91 581 Water Sr-89 49.0 s 8.66 50.67 a 8.67 0.38 0.58 49.57 a 18.16

$r-90 25.0 : 8.66 26.00 a 3.00 0.64 0.35 24.72 s 5.82 09/20/91 579 Veter cross Alpha 10.0 a 8.66 11.67 a 1. 74 0.45 0.58 10.36 2 6.2 Gross seta 20.0 8.66 21.00

0.00 0.24 0.35 20.30 m 7.*4 09/27/91 584 Milk tr-89 25.0 e 8.66 21.00 e 7.95 0.02 -1.39 20.95 s 10.36

$r-90 25.0 s 8.66 19.00 1 0.00 (d) -0.72 -2.08 21.09 2 8.40 1-131 108.0 e 19.05 113.33 e 17.31 0.75 0.84 108.56 a 16.68 Cs-137 30.0 t 8.66 29.00

10.83 -0.81 -0.35 31.35 a 4.68 K 1740.0 s 150.69 1503.33 e 225.18 (e) -3.27 -4.71 1667.46 s 241.58 F-3

- :q < p_1 q$ EPA INTER-LABuRATORY COMPARISONS - 1991 TELEDYNE ISOTOPES g Collecticri SeqJence Teledyne mornetired Devistim Att Participants Date No. Media Nta: tide EPA Results(a) isotopee Results(b) Grand Avg. Knnun Meeri e 2 e.d.

10/04/91 582 Water Co-60 29.0 t 8.65 30.33 t 6.24 0.18 0.46 29.83 a 6.00 Lab Perf. 2n-65 73.0 a 12.12 72.67 e 21.27 -0.47 -0.08 74.57 e 13.28 Ru-106 199.0 2 34.64 197.67

22.53 0.30 -0.12 194.21 t 41.84 Be-133 98.0 e 17.32 97.00 s 26.16 0.15 -0.17 95.56 a 14.88 Cs-134 10.0 t 8.66 10.33 a 1.74 0.14 0.12 9.93 e 3.64 Cs-137 10.0 s 8.66 11.33 e 1.75 0.16 0.46 10.86 s 3.62 10/18/91 583 Water N-3 2454.0 a 611.41 2333.33 t 173.22 -0.98 -0.59 2531.91 2 677.04 10/22/91 586 Water Gross Alphe 82.00 t 36.37 55.00 t 13.08 'f) -1.70 -2.23 60.64 a 32.10 Lab Peri. Cross Bete 65.0 a 17.32 56.00 t 3.00 0.08 -1.56 50.78 e 12.64 Sr-89 10.a e 8.66 10.67 m 9.24 0.30 0.23 18.84 a 10.24 sr-90 10.0 s 8.66 9.33 1.74 -0.26 -0.23 14.44 a 4.04 Co-60 20.0 t 8.66 19.67 2 1.74 -0.19 -0.12 20,22 a 4.26 Cs-134 10.0 s 8.66 10.33 2 9.24 0.26 -0.12 7.49 a 2.88 cm-137 11.0 s 8.66 13.67 e 1.74 0.42 0.92 5.94 a 3.10 Footnotes:

(c) EPA Results - Expected laboratory preelef on (3 slyne). Units are pCi/l for water and milk exceot E which is in mg/t.

(b) Tet edyne Results - Average 2 3 eigma. Units are sti/! for water and milk except K e lch is in eg/t. Units are total pCl for o!r porticutete filters.

(c) The sagte presents a dif ferent ecmting gemetry. The EPA deposits activity in a 3/4 inch dieneter circle, on e plastic disk approximately 3/32 inch thick. A spacial calibration for EPA filters witt be perforined. The laboratory has obtelned blank filters from the Les Vegas facility, and will sinutote their deposits.

(d) The cause for the devletion is believed to be erroneously high strontium yields, probably caused by incomlete seperation of catclus. The laboratory has investigated carrier corcentrations end pipeting techniques end have found them to be correct. Further aspects of enetysts' techniques are being tested. The laboratory has received a new strontius extraction meterist developed at Argonne Netionel Laboratory. Experiments with this snethod to achieve better seperation of estelue were cot eted and proce&re PRO-032-105 was i mtemented on 2/1/92.

8 (e) There is no apparent cause for the low ( results. Two other isotopes spiked in the samte were in good agre= ment with EPA vetuas. Unit corsversions were reviewed and found to be correctly applied. Possible backgromd errors in geomety were levestigated and fA9d to have en insignificant ef fect.

(f) Probah!t f alture to transfer att sarrple resI&e to the ccmting planchet. Analysts are being tested using in-hostse end other EPA spikes.

F-4 m W W W m W W W W m m m M M M M M m m

I TABLE F-2 USEPA ENVIRONMENTAL RADI0 ACTIVITY LABORATORY INTERCOMPARISON STUDY PROGRAM I

I DATE MM-YY ENV SAMILE CODE MEDIUM ANALYSIS PSE&G Mean i s.d.

EPA Known I 01-91 EPA-WAT-AB319 Water Beta 5.8 1 0 515 02-91 EPA-WAT-G320 Water Co-60 45 1 0.9 4015 Zn-65 157 1 7.4 149 i 15 Ru-106 227 i 15 186 1 19 I Ba-133 Cs-134 Cs-137 86 1 2.5 13 1 1.7 13 1 0.8 75 1 8 815 815 l 02-91 EPA-VAT-1321 Water I-131 79 1 1.9 7518 03-91 EPA-APT-GABS 323 APT Beta 121 1 1.6 124 1 6 Cs-137 39 1 0.5 4015

. 04-91 EPA-WAT-P324 Water Beta 114 1 6.9 115 i 17 Cs-134 25 i 1.2 24 1 5

.I' Cs-137 26 1 0.9 2515 04-91 EPA-MLK-GS325 Milk Cs-137 bl 1 0.9 49 i 5 I- V(1)

I-131 1660 1 53 63 1 0,5 1650 1 83 6016 05-91 EPA-WAT-AB327 Water Beta 46 1 1.7 4615 06-91 EPA-WAT-G328 Water C0-60 12 1 0.5 10 t 5 g Zn-65 110 1 3.1 108 i 11 g Ru-106 155 1 5.7 149 1 15 Ba-133 64 1 2.6 6216 Cs-134 17 1 1.7 1515 l 08-91 EPA-APT-GABS 331 APT Cs-137 Beta 17 1 0 93 1 1.2 14 1 5 92 i 10

Cs-137 26 1 0.5 3015 G8-91 EPA-WAT-1330 Water I-131 19 1 0.8 20 1 6 09-91 EPA-WAT-AB333 Water Beta 21 i 1.4 2015

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I TABLE F-2 USEPA g ENVIRONMENTAL RADI0 ACTIVITY LABORATORY E INTERCOMPARISON STUDY PROGRAM I

E DATE pie &G EPA E MM-YY ENV SAMPLE CODE MEDIUM ANALYSIS Hean i s.d. Known 09-91 EPA-MLK-GS334 MLK I-131 110 1 2.6 108 i 11 I

Cs-137 32 i 1.2 30 1 5 10-91 EPA-WAT-G335 Water K(1)

Co-60 1670 i 19 30 1 0.4 1740 1 87 29 i 5 l

Zn-65 74 1 0.2 73 1 7 g Ru-106 215 1 1.4 199 1 20 g Ba-133 10811.7 98110 Cs-134 11 1 0.2 10 1 5 Cs-137 12 1 0.7 10 1 5 l 10-91 EPA-WAT-P337 Water Beta 62 1 2.5 65 i 10 Co-60 22 1 0.6 20 1 5 l Cs-134 11 i 1 10 1 5 m Cs-137 13 1 1.5 11 1 5 l I

s. d. - one standard deviation of three individual analytical results E

- known value with control limits, indicating whether results are in agreement or disagreement Note units are: pCi/l for water and milk except K which is in mg/1, and pCi/ filter for air particulate filters.

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I lI LGS SURVEY 4

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3923023260 APPENDIX G: LGS SURVEYS A Land Use Census around the Limerick Generating Statisn (LGS) was conducted

'I by RMC Environmental Services for Philadelphia Electric Cornpany (PECo) to comply with section 3/4.12.2 of the Plant's Technical Specifications. The survey was conducted during the May to September 1991 growing season. The results of this survey are summarized in Table G-1.

There were no changes required to the LGS REMP as a result of this survey.

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Table G-1 Location of Nearest Residence, Garden and Milk Farm within a Five Mlle Radius of Limerick Generating Station,1991 Sgg_ tar Residence (Distance in Miles)

Garden") Milk Farm ll N 0.6 1.7 4.7 NNE 0.5 1.1 -

NE 0.6 1.6 -

ENE E

0.6 0.5 2.7 1.1 l

ESE 0.6 0.6 1.1<2)

SE 1.0 1.1 4.6 SSE 1.0 1.1 4.5 S 0.8 1.2 2.3 SSW l.0 1.0 1.8 SW 0.6 0.9 3.0 WSW 0.8 0.8 1.4 g

W 0.6 2.3 - E WNW 0.7 0.7 -

NW 0.7 1.6 4 . 7(23 NNW 0.9 1.5 -

(1) Garden greater than 500 square feet (2) Goat Milk I

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ML20095H869

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Subject:

SUMMARY

SUMMARY

= O >

= Q >

branching intensity of the nuclide at the gama emission energy under consideration (no. of photons per disintegration) E i gj3

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ML20095H869

Text

Subject:

SUMMARY

SUMMARY

= O >

= Q >

branching intensity of the nuclide at the gama emission energy under consideration (no. of photons per disintegration) E i gj3

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