ML20082T737

Radiological Environ Monitoring Program 1994 Annual Rept

ML20082T737
Person / Time
Site:	Comanche Peak
Issue date:	12/31/1994
From:	Floyd E, Terry C, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-95116, NUDOCS 9505040149
Download: ML20082T737 (110)

Text

a Nmmes Log # TXX 95116 EM File # 10300 L 4 10160 clo C

C-916 (6) clo Ref. # 10CFR50 App. I 1UELECTRIC l

c, % rm April 27, 1995 i Grom Yks PresMent Nuclear U. S. Nuclear Regulatory Commission  !

Document Control Desk Washington, DC 20555 ,

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) ,

DOCKET NOS. 50 445 AND 50 446 OPERATING LICENSES NPF 87 AND NPF 89  ;

TRANSMITTAL OF THE ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Gentlemen: .

Enclosed is one (1) copy of the Annual Radiological Environmental Operating Report for the CPSES Radiological Environmental Monitoring Program. This report is submitted pursuant to Section 6.9.1.3 of the i CPSES Unit 1 and 2 Technical Specifications. The report covers the period from January 1, 1994, through December 31, 1994, and summarizes the results of measurements and analysis of data obtained from samples collected during this interval.

If there are any questions regarding this report, contact Connie Wilkerson at (214) 812 8819 or Doug Kay at (817) 897 5204.

Sincerely, D. R. Woodlan Docket Licensing Manager s

CLW/grp Enclosure c- Mr. L. J. Callan, Region IV w/ encl.

Mr. T. J. Polich, NRR (clo) ,

Resident Inspectors, w/ encl.

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5a5 A8hu E!EN;5 .

9' 6 i Energy Plaza 1601 Bryan Street Dallas. Texas 75201-3411 1

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1UELECTRIC t r

COMANCHE PEAK STEAM ELECTRIC STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM '

1994 ANNUAL REPORT ,

f REVIEW / APPROVAL ,

Reviewed by: ~/ '

9-N-Fr Edwin T. Floyd' Date Senior Radiation Protection Technician I

Reviewed by: '

I / 4- l o - %~

Douglas d Kay Date Radiation Protection Supervi r Approved by: O 8- #- M Robert J. Prince Date ,

Radiation Protection Manager  !

l COMANCliE PEAK STEAM ELECTRIC STATION P.O. Box 1002 Glen Rose. Texas 76043 1002 I

t TABLE OF CONTENTS SECT JN PAGE l I. IN1RODUCDON....... ... ... ...... ..... . .. ... ......... . ..... . . . . ..... .... . .... .. .. .. ... . . . .. . .. .... ... . ....... . .. ..... 1 - !

A. Site and Station Description ................ .................... ............. ... .. 2 R Objectives and Overview of the............................................................ 2 CPSES Monitoring Program II. PROG RAM DESC RIPTI ON ..... ...... ....... .... ...................... .......................... 6 A. Sample lacati on s ............ ................................................................... 7 .

H Sampling Methods and Procedures................................................ 7

1. Direct Radia tion.... ....... ... . ... ........ ... ........ ... . ... .... . ... ................... 8  ;

2. Air Particulates and Air Iodine ............................. ........... 8 i i

3. Milk........................................................................................9

4. Water........................................................................................9  ;

5. F1sh.........................................................................................I1

6. Sh orelin e Se dim ent ............................................................. I 1 f

7. Food Pmducts........... ........ ........ .......... ...... ........ ..... ... ............. 1 2 l

8. Broadleaf Vege tation ........................................................... 12 C Interlaboratory Comparison Program ......................................... 12 D. Deficiencies in the Sample Program........................................... 13 III.

SUMMARY

AND DISCUSSION OF 1994 ANALYTICAL RESULTS......14 A. Direct Radiatian.......... ...... ...... ..... ...... ........... ...... ...... ...... ..... ...... .......... 1 6 H Air Particulates and Air Iodine ........ ... ....................................... 17 .

C Milk......................................................................................................18 D. Water....................................................................................................18 E. F1sh.........................................................................................................20 11

E Shoreline Sediments ...... .. . . ........ ............. .... . ... 2 0 G. Food Products.. . ........... ... ........... .... ... .............. .... ... . . . ... .. .. ... . .. . .. ..... . ...... 2 1 H. Broadleaf Vegetation .... ....... .. ........... ........................ ... .. . 2 1 IV. C O N C LU SI O N S .. .... ...... ... .... .... ....... ........... .... .... ............. .. .... ......... ..... 2 3 l V. REFERENCES...... . ... .. .. . .. .... ......... ............ . ........... .. .......... .. .......... . ....... 2 5  ;

VI. DATA TABLES...... ..... ... . . .... ...... . .. . . ... . .. ... ........ ... ........ . .. .... ... . . .... . ....... ... . ... .. .. 2 7 j APPENDICES i APPENDIX A EPA Cros s-Check Program .... .... ............. ......... .............. .A- 1 APPENDIX B Synopsis of Analytical Procedures ..... .................... . ... ...... .B-1 APPENDIX C Exceptions to the 1994 REMP......................................................C- 1  :

1 APPENDIX D Exceed ed Reporting Levels .................... ..................................... D- 1  ;

APPENDIX E land Use Census. ........ .. . . . .. ... .. . . . . . . . . ... . .. . .. ... ... . ... . . . .... . . .. .. . . . . .. .. . .. ... . . .... E - 1 i

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IJST OF TABLES  ;

TABLE TITLE EAGE ,

1 CPSES Radiological Environmental.. .. . .. ....... ......... . .. ..... .. 28  !

Monitoring Program  ;

i 2 Direct Radiation -- Thermoluminescent Dosimetry ... ... .... . .... 32 l 3 Concentrations of Iodine-131 in Filtered Air. .. ... .... ...... . 34  ;

'4 Concentrations of Gross Beta Emitters in Air Particulates.......... 37 5 Concentrations of Gamma Emitters in Air Particulate Filters .... 40 6 Concentrations of Iodine-131 in Milk... .. ... .. ... .................. ......... 4 2 7 Concentrations of Gamma Emitters in Milk. . .... . ....... ....... . 43  !

8 Concentrations of Gamma Emitters in Groundwater... .................. 45 9 Concentrations of Tridum in Groundwater...... .. . ... ................ 47  ;

i 10 Concentrations of Gross Beta in Water-Surface / Drinking......... 48 i 11 Concentrations of Gamma Emitters in Water-Surface / Drinking 49 12 Concentrations of Iodine-131 in Water-Surface / Drinking............. 51 {

i 13 Concentrations of Tritium in Water-Surface / Drinking. ... ...... 52 14 Concentrations of Gamma Emitters in Surface Water...................... 53 l 15 Concentrations of Tritium in Surface Water............. .. ... ............ .. 55 i i

16 Concentrations of Gamma Emitters in F1sh ................... ......... ..... 56 17 Concentrations of Gamma Emitters in Sediment........ ................... 57 l i

18 Concentrations of Gamma Emitters in Food Products..................... 58 '

e 19 Concentrations of Gamma Emitters in Broadleaf Vegetation .... 59  ;

i 20 Radiological Environmental Monitoring Program Summary - i January 1 to December 3 1, 1994 ...... .. ..... .. .. ........... ... .... .. . .... ........... 6 1 l l

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1 Radiological Environmental Monitoring locations............................ 30 I

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INTRODUCTION i

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l I. INTRODUCTION Results of the Radiological Environmental Monitoring Program for the  ;

Comanche Peak Steam Electric Station for 1994 is contained within this report. This report covers the period from January 1,1994 through December 31,1994 and summadzes the results of measurements and analy-ses of data obtained from samples collected during this interval.

A. Site and Station Descriotion Comanche' Peak Steam Electric Station (CPSES) consists of two  :

PWR units, each designed to operate at a power level of about 1150 megawatts (electrical). The station is located on Squaw Creek Reservoir in Somervell County about forty miles southwest of Fort j Worth, Texas. Unit I received a low power operating license  ;

Pebruary 8,1990 and achieved initial criticality on April 3,1990. A  !

full power license for Unit I was issued on April 17,1990, and commercial operauon was declared on August 13, 1990. Unit 2 achieved initial criticality on March 24, 1993 and synchronized to the electrical grid on April 9,1993.

H Objectives and Overview of the CPSES Monitoring Program .

The United States Nuclear Regulatory Commission (USNRC) regu-lations require that nuclear power plants be designed, constructed, j and operated to keep levels of radioactive material in effluents to unrestricted areas as low as reasonably achievable (ALARA) (10 CFR  ;

50.34a). To assure that these criteria are met, each license autho-l rizing reactor operation includes technical specifications (10 CFR 50.36a) governing the release of radioactive effluents.

In-plant monitoring is used to assure that these predetermined 2

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1 release limits are not exceeded. However, as a precaution against-unexpected and undefined processes which might allow undue ac-cumulation of radioactivity in any sector of the environment, a pro-  :

gram for monitoring the plant environs is also included.

Sampling locations were selected on the basis of local ecology, me-teorology, physical characteristics of the region, and demographic and land use features of the site vicinity. The radiological environ -

mental monitoring program was designed on the basis of the -

1 USNRC Branch Technical Position on radiological environmental monitoring issued by the Radiological Assessment Branch, Revision 1 (November 1979)(1), the CPSES Technical Specifications (4) and the CPSES Offsite Dose Calculation Manual (ODCM)(5),

In 1994, the Radiological Environmental Monitoring Program in-cluded the measurement of ambient gamma radiation by thermo- i l

luminescent dosimetry; the determination of gamma emitters in 3 sediment and fish; the determination of airborne gross beta, gamma -

emitters, and iodine-131: the measurement of tritium and gamma emitters in surface water; the measurement of tritium and gamma emitters in groundwater: the measurement of gross beta, tritium, iodine-131 and gamma emitters in drinking water; the determi- l

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nation of gamma emitters and iodine-131 in milk; and the mea-surement of gamma emitters in food products and gamma emitters and iodine-131 in broadleaf vegetation. Samples were collected by CPSES Environmental Personnel. Sample analyses were performed -

by Teledyne Brown Engineering - 2nvironmental Services.

The regulations governing the quantitles of radioactivity in reactor  ;

effluents allow nuclear power plants to contribute, at most, only a 3

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few percent -increase - above normal background radioactivity.

Background levels at any one location are not constant but vary with time as they are influenced by external events such as cosmic ray bombardment, weapons test fallout, and seasonal variations. 'Ihese levels also can vary spatially within relatively short distances re-flecting variations in geological composition. To differentiate be- . ,

tween background radiation levels and increases resulting from op- .

eration of CPSES, the radiological surveys of the plant environs are divided into preoperational and operational phases. The preopera-tional phase of the program permits a general characterization of ,

the radiation levels and concentrations prevailing prior to plant op-eration along with an indication of the degree of natural variation to be expected. The operational phase of the program obtains-data l which, when considered along with the data obtained in the preop-erational phase, assist in the evaluation of the radiological impact of _

plant operation.  ;

Preoperational measurements were conducted at CPSES from 1981 to 1989. 'Ihese preoperauonal measurements were performed to:

1. Evaluate procedures, equipment and techniques.

2. Identify potentially important pathways to be monitored af-ter the plant is in operation.

3. Measure background levels and their variations along po-tentially important pathways in the area surrounding the plant.  :

4. Provide baseline data for statistical comparison with future operational analytical results.

The operational Radiological Environmental Monitoring Program is 4

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conducted to:

1. Verify that measurable concentrations of radioactive mate-rials and levels of radiation are not higher than expected on the basis of the effluent measurements and modeling of the environmental exposure pathways.

2. Verify the effectiveness of in-plant measures used for con-trolling the release of radioactive materials.

3. Identify changes in the use of areas at and beyond the site boundary that may impact the principal pathways of expo-sure.

This report documents the fifth year of operational measurements and is submitted in accordance with the requirements of the CPSES Offsite Dose Calculation Manual, Part I. Administrative Control 6.9.1.3.

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PROGRAM DESCRIPTIONS

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II. PROGRAM DESCRIPTION A. Rample Locations  ;

Seventy-five locations within a radius of 20 miles from the CPSES t

site were included in the monitoring program for 1994. 'Ihe num-ber and location of monitoring points were determined by consid-cring the locations where the highest off-site environmental con-centrations have been predicted from' plant effluent source terms, site hydrology, and site meteorological conditions. Other factors considered were applicable regulations, population distribution, ease of access to sampling stations, availability of samples at desired locations, security and future program integrity. Additionally an annual land use census is conducted to identify changes in the use of areas surrounding the plant. If changes are identified that im-  !

pact the principal pathways of exposure, appropriate changes to the l radiological environmental monitoring program are implemented.

The results of the 1994 Land Use Census are provided in Appendix  !

E.

The Radiological Environmental Monitoring Program for Comanche Peak is summarized in Table 1. Figure 1 shows the locations of the various sampling points.

H Samoling Methods and_hocedures To derive meaningful and useful data from the Radiological Environmental Monitoring Program, sampling methods and proce-dures are required which will provide samples representative of potential pathways of the area. The methods and procedures used for each pathway monitored are described below.

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1. Direct Radiation l hermoluminescent dosimeters (TLDs) were used to de- l termine the direct (ambient) radiation levels at monitoring l points. Sampling locauons were chosen according to the l criteria given in the USNRC Branch Technical Position on Radiological !Snitoring (Revision 1, November 1979)(1)-

he area around the station was divided into 16 radial sec- l tors of 22-1/2 degrees each. TLDs were placed in all sec-tors. 'Ihermoluminescent dosimeters were located in two l r

rings around the station. An inner ring was located at the t site boundary and an outer ring was located at a distance of j 4 to 6 miles from the station. Eleven additional'ILDs were l located at points of special interest, including two control  !

locations. For routine TLD measurements, two dosimeters  !

'l of CaSO4 :Dy in teflon cards were deployed at each selected l location. One set of dosimeters was exchanged on a quar-terly basis and the second set was exchanged on an annual basis. Additional sets of dosimeters were shipped with each exchange cycle to serve as in-transit controls.

Individual dosimeters were calibrated by exposure to an accurately known radiation field from a calibrated Cs-137 source. I

2. Air Particulates and Air Iodine l Air particulate and air lodine samples were collected from the eight locations described in Table 1.

Each air particulate sample was collected by drawing air through a 47 millimeter diameter glass-fiber filter. Air 8

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i iodine was collected by drawing air through a TEDA im- l pregnated charcoal cartridge which was connected in se- j

. ries behind the filter. 'Ihe filters and charcoal cartridges ' i were collected weekly by CPSES staff. - In the laboratory. . j air particulate filters were analyzed for gross beta activity  !

and were composited quarterly for gamma spectrometry j

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analysis. Charcoal cartridges were analyzed for iodine-131.-  ;

3. Milk i Milk samples were collected by CPSES staff monthly for the period January through April. May through September  !

samples were collected semimonthly, except for May when three samples were collected. October through.

December samples were collected monthly.. The control station at location SW-13.5 moved operations during the fall to location SW-14.5 Upon arrival at the laboratory, the milk samples were promptly analyzed for gamma emitters and for 1-131 by utsilizing radiochemistry techniques. l

4. Water The CPSES staff collected water at 11 locations. Surface j water was collected at four locations (N-19.3, ESE-1.4, N- )

I 1.5 and NE-7.4). Ix> cation N-1.5 provides samples repre-sentative of Squaw Creek Reservoir surface water at a lo-1 cation beyond significant influence of the plant discharge. ]

Location ESE-1.4 provides samples representative of dis-l charges from Squaw Creek Reservoir downstream to j Squaw Creek and to Lake Granbury via the return line. )

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P Imcation NE-7.4 provides samples' of lake Granbury surface water down stream of the discharge from the return line >

from Squaw Creek Reservoir. A control sample is obtained  ;

from the Brazos River, upstream of Lake Granbury at loca- ,

t tion N-19.3. i Surface water samples from Squaw Creek Reservoir loca- l 4  :

tions were collected weekly and composited for monthly +

gamma isotopic analysis. Samples from Lake Granbury lo- l cations were collected monthly and analyzed by gamma i

spectroscopy. All surface water samples were also com-posited quarterly by location for tritium analysis. l Surface-drinking water was collected at two locations (N- l i

9.9 and NNW-0.1). Samples of Squaw Creek Reservoir wa-  ;

ter were collected at location NNW-0.1. Samples from this  !

location were analyzed pursuant to the drinking water ,

requirements even though Squaw Creek Reservior is not ]!

used as a potable water supply. Iocation N-9.9 was'used to  !

3 sample surface water from lake Granbury near the intake l l

of the City of Granbury potable water plant. .

Surface-drinking water samples were collected weekly and  ;

i composited for iodine-131 analysis every two weeks and  !

gamma isotopic and gross beta analyses monthly. Tritium j analyses were performed quarterly. i There are five groundwater locations (SSE-4.6, W-1.2, j WSW-0.1, N-1.45 and N-9.8). ODCM Table 3.1, Note (5) l states that groundwater supplies in the site area are not affected by plant effluents and are sampled only to provide i l

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confirmation that groundwater is not affected by plant dis--  ;

j charges. 1 Groundwater samples were collected quarterly. Gamma isotopic and tritium analyses were performed by location. .

5. Bah Fish samples were collected at two locations for the 1994. ,

program. An area 2.0 miles ^ east-northeast of the site in- 3 Squaw Creek Reservoir was chosen as the indicator loca-  !

tion, and a location at Lake Granbury (NNE-8) was chosen as a control location. Fish sampling was conducted in May ,

and October for Station ENE-2.0 and May and October for the control station.

Fish were collected by CPSES staff. Available edible speclec were gutted at the time of collection. Samples ,

were then frozen and shipped to the laboratory for analy- l sis. Fish were filleted in the laboratory and the edible  ;

portion analyzed by gamma spectrometry.

6. Shoreline Sediment  !

Shoreline sediment samples were collected in January and -

July from Squaw Creek Reservoir at location NNE-1.0. 1 Samples were also collected from Lake Granbury at the  ;

i control location N-9.9. and location NE-7.4, which is downstream of the discharge of the return line from Squaw Creek Reservior. CPSES staff collected the sediment samples and shipped them to the laboratory for t analysis by gamma spectrometry.

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7. Food Products  !

During the period of May through December,11 samples l

were collected from'four indicator sampling locations (E-4.2, ENE-9.0, SW-12.7 and E-3.5) A total of 8 different

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, types of food products were collected during this sampling  !

i period. Food product samples were collected by the  ;

CPSES staff and shipped to the laboratory where they were analyzed for gamma emitters.

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8. Broadleaf Vegetation ,

Broadleaf vegetation was collected from the control loca-tion (SW-13.5) and two indicator stations (N-1.45 and SW-1.0) near the site boundary. Collection of broadleaf vege-  !

tation started in May 1994. Broadleaf samples consisted of available tree leaves; if tree leaves were unavailable, native grasses and weeds were substituted.

Gamma isotopic and iodine-131 analyses were performed ,

for all broadleaf vegetation samples.

C Interlaboratory Comnarison Program  ;

To demonstrate that the results of the environmental analyses are valid, the CPSES Radiological Environmental Monitoring Program requires that independent checks on the precision and accuracy of  ;

the measurements of radioactive materials in environmental sample  !

matrices be performed. To fulfill this requirement Teledyne Brown Engineering - Environmental Services participates in the environmental sample cross-check program conducted by the U.S.

Environmental Protection Agency (EPA).

The purpose of the interlaboratory comparison program is to pro-12

vide an independent check on the laboratory's analytical proce- 1 dures and to alert it to any possible problems. Participant labora-

~ tories measure the concentrations of specified radionuclides and  ;

report them to the issuing agency. 'Ihe agency then furnishes the l known values to the participant laboratory and specifies the control 1 limits. Results consistently higher or lower than the known values or outside the control limits indicate'a need to check the instru- ,

ments or procedures used.

l The results of Teledyne Brown Engineering - Environmental.

Services' participation in the U.S. EPA Interlaboratory Comparison  ;

Program for 1994 are provided in Appendix A. ,

D. Deficiencies in the Samole Program In accordance with secuan 6.9.1.3 of the ODCM(5), any deviations i from the sampling schedule of Table 3.12.1 of the ODCM shall be reported in the annual environmental monitoring report. During the year 1994, one deviauon in sampling occurred in the air sam-pling program. The air paruculate sample taken at location S/SSW-1.2 for the week of 6/28/94-7/5/94 indicated that the filter paper was improperly loaded into the filter holder. The sample results are invalid due to unknown flow through the filter paper. This de-ficiency was due to personnel error and corrective actions have been taken to ensure that no further deviations of this type occur in the future. There were no other deficiencies during 1994. 'l l

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SUMMARY

AND DISCUSSION OF  :

t 1994 ANAI.,TTIN MUI.,TS I

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SUMMARY

AND DISCUSSION OF 1994 ANALYTICAL RESULTS Data from the radiological analyses of environmental media collected .

during the report period are tabulated and discussed below. The proce- {

dures and specifications followed in the laboratories for these analyses are as required in the Teledyne Brown Engineering - Environmental Services Quality Assurance Manual IWL-0032-395 and are detailed in Teledyne Brown- i Engineering - Environmental Services Analytical Procedures Manual. A syn- l opsis of analytical procedures is contained in Appendix B of this report.

Radiological analyses of environmental media characteristically ap-proach and frequently fall below the detection limits of state-of-the-art mea-surement methods as discussed in NCRP Report No. 50(2). The use of"<" in the data tables symbolizes that the result is less than the lower limit of de- l tection (LLD) as defined in Appendix B. Not Detected, "ND", is used period- j ically in the tables presenting gamma analysis results for various media. It 1

primarily appears under the "Others" column, and indicates that no other detectable gamma emitting nuclides were identified. The Teledyne Brown Engineering - Environmental Services analytical methods meet the LLD  !

requirements addressed in the CPSES Offsite Dose Calculation Manual.

Tables 2 through 19 give the radioanalytical results for individual samples. A statistical summary of the results appears in Table 20. The re- i ported averages are based only on concentrations above the limit of detec- ,

tion. In Table 20, the fraction (0 of the total number of analyses with de-tectable activity follows in parentheses. Also given in parentheses are the ,

minimum and maximum values of detectable activity during the report pe-riod.

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l A. Direct Radiation .  ;

Environmental radiation dose rates determined by thermolumines-l cent dosimeters (TLDs) are given in Table 2. Thermoluminescent  !

dosimetry badges with four readout areas each were deployed at each location on quarterly and annual cycles. The mean values of four readings (corrected individually for response to a known dose'  :

and for in-transit exposure) are reported.

A statistical summary of the 1994 data is included in Table 20. For -

the quarterly analyses the average dose rate of the control locations ,

was 0.12 mR/ day with a range of 0.11-0.14 mR/ day. The average of 1 the indicator locations for the quarterly samples was 0.12 mR/ day j with a range of 0.08 to 0.18 mR/ day. For the annual samples, the average dose rate for the control samples was 0.11 mR/ day. The indicator locations had an average of 0.10 mR/ day with a range of 0.07-0.14 mR/ day. I Oakley(3) calculates an ionizing background radiation dose equiva- .

i lent of 82.2 mR/ year for Fort Worth including a terrestrial compo-nent of 45.6 mR/ year and an ionizing cosmic ray component of 36.6 mR/ year (excludes neutron component). Since Oakley's values rep- l resent averages covering wide geographical areas, the measured ambient radiation average of 43.8 mR/ year for the immediate locale of CPSES is consistent with Oakley's observations. Significant variations occur between geographical areas as a result of geological composition and altitude differences. Temporal variations result from changes in cosmic ray intensity, local human activities, and factors such as ground cover and soil moisture.

Anomalies in the 1994 measured doses relative to preoperational 16

data were not noted. For 1989, the averages for the indicator loca-tions were 0.16 mR/ day (range of 0.11 to 0.22) and 0.13 mR/ day (range of 0.11 to 0.17), for the quarterly and annual samples re-spectively. 'Ihe 1988 averages for the quarterly and annual indica- ,

tor locations were 0.16 mR/ day (range of 0.10 to 0.20) and 0.15 .,

i mR/ day (range of 0.12 to 0.18) respectively.

11 Air Partienintes and Air Iodine A total of 421 charcoal cartridges were analyzed for airborne 10-dine-131 by gamma spectrometry. No iodine-131 was detected at any of the sampling stauons. Results of these measurements are presented in Table 3.

A total of 420 air particulate filters were collected and analyzed for gross beta activity. For 1994 the average gross beta activity for the control location was 0.022 pCi/m3 with a range from 0.009 to -

0.060 pCi/m3- For the seven indicator locations the yearly average was 0.023 pC1/m3 with a range from 0.007 to 0.060 pC1/m3 'Ihe j gross beta analysis data are presented in Table 4. Anomalies in gross beta measurements relative to preoperational data were not noted.  ;

Air filters were composited quarterly and then analyzed by gamma spectrometry. The gamma spectrometry data is presented in Table

5. Cosmogenic beryllium-7 was detected in all 32 samples; potas-slum-40, a naturally occurring nuclide, was measured in three sam-ples. The average beryllium-7 activity for the control location was 0.077 pCi/m3 with a range of 0.076-0.078 pC1/m3 For the indicator locations, the average beryllium-7 activity was 0.084 pCi/m3 with a range of 0.062 to 0.106 pC1/m3. The average 17

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potassium-40 for the control location was 0.009 pCi/m3- The average potassium-40 activity for the indicator locations was 0.008 1 pCi/m3 with a range of 0.007-0.009 pCf/m3 C Milk A total of 18 milk samples were collected in 1994.' All samples  !

were analyzed for iodine-131 by radiochemistry and for other l i

gamma emitting isotopes by gamma spectrometry. Results of these  ;

measurements are presented in Table 6 and 7.  !

No iodine-131 was found in any of the milk samples. The lower j limits of detection can be found in Table 6.  !

Results of the gamma spectrometry measurements are presented in  ;

Table 7. Naturally occurring potassium-40 was detected in 'all of  !

the milk samples. The average activity for the control location was I 1354 pCi/l with a range of 1190 to 1510 pCi/1. Cesium-137 was ,

not detected in any of the samples. l D. Water i Groundwater samples were collected from five locations during 1994. 'Ihe samples were analyzed for gamma emitters and tritium on a quarterly basis, pursuant to the ODCM requirements for groundwater. Twenty samples were analyzed for gamma emitters l by gamma spectrometry. Potassium-40 was detected in one i

indicator station with an average activity of 33 pCi/1. Potassium-40 )

I was also detected in the control sample with an average activity of '

78 pCi/1. Quarterly samples for each sampling location were analyzed for tritium: no tritium was detected. Results of these analyres are contained in Table 8 and 9 respectively.

Surface-drinking water was collected from two stations. All sam-18

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pies were- analyzed for gamma emitters;-results were below the: 'l.

lower limit of. detection. Twenty-six samples were analyzed: for '!

- gross beta activity. He indicator station had an average activity of -

18 pCi/l with a range of 9.7 to 28 pCi/1. He control station had an average activity of 12 'pC1/1 with a range of 8.5 to 21 pCi/1. Eight l quarterly composites were analyzed for tritium. He indicator sta-  !

tion had an average activity of 6325 pC1/1 with a range of 5200 to  ;

i 7400 pCi/1. The control station showed no tritium activity above the lower limit of detecuon. Iodine-131 analyses by radiochemistry ,

I were performed on 52 samples of surface-drinking water: there j was no measurable acuvity. Results of these analyses are contained  ;

in Tables 10-13. l l

Surface water was sampled from four locations during 1994.  ;

Samples were analyzed for gamma isotopic on a monthly basis and tritium composites on a quarterly basis, per the ODCM require- i ments for surface water. Fifty-two samples were analyzed by gamma spectrometry. Potassium-40 was detected in two samples at Station ESE-1.4, an indicator station, with an average activity of 78 -i pCi/l and a range of 68-87 pCi/1. Potassim-40 was also detected in  ;

one sample from the control station N-19.3 with an average activity 1h of 42 pC1/1. Sixteen composited surface water samples were  !

analyzed for tritium. De indicator stations had an average activity of 6113 pCi/l with a range of 4800-7900 pCi/1. The tritium

]

detected in Squaw Creek Reservoir samples is attributed to liquid effluent discharges from CPSES. The results of these analyses can be fc 'ad in Table 14 and 15 respectively. The level of tritium in th'.. Squaw Creek Reservoir is well within the expected value i 19 l 1

l

i predicted in the CPSES Final Safety Analysis Report. . j E. Bah The results of gamma isotopic analyses.of fish samples collected .

during 1994' are presented in Table 16. - A total of eight samples  !

were analyzed, three from the indicator location (ENE-2) and five  :

from the control location (NNE-8). Sampling efforts crncentrated - j on the larger edible species of commercial and/or recreational im-  ;

portance.  :

Cesium-137 was not detected in any of the samples. Preoperational  !

levels have ranged from 3 to 39 pCi/kg wet on thirteen different occasions. Naturally occurring potassium-40 was detected in all-samples. The average potassium-40 concentration for the three indicator samples is 3080 pCi/kg wet with a range of 2470 to 3850 pCi/kg wet. The average concentration for the control location is  :

3042 pCi/kg wet with a range of 2730 to 3340 pCi/kg wet. l t

F. Shoreline sediments  !

The processes by which radionuclides and stable elements are con-centrated in bottom sediments are complex involving physiochem-ical interaction in the environment between the various organic and .

I inorganic materials from the watershed. 'Ihese interactions can i proceed by a myriad of steps in which the elements are absorbed in or displaced from the surfaces of colloidal particles enriched with i

. i chelating organic materials. Biological action of bacteria and other j benthic organisms also contribute to the concentration of certain- f elements and in the acceleration of the sedimentation process.

Results of the gamma isotopic anal; ses of the sediments sampled '

from the CPSES environment are given in Table 17. For 1994 ,

i I

20

, . . - - . =. . = . -

three locations, one control and two indicators, were sampled l semiannually, ne average, fraction of detectables, and range of_

radionuclide concentrations are summarized in Table 20.

Naturally occurring gamma emitters found in detectable concen-f trations were K-40 Pb-212 Bi-214 Pb-214. Ra-226 and %-228.  !

t Cesium-137.was measured in one sample from an indicator location with an activity of 49 pCi/kg. Preoperational levels of cesium-137 I have ranged from 9.2 to 150 pCi/kg on four different occasions.

G. Food Products  !

Results of gamma isotopic analyses of food samples are contained in l

Table 18. A total of 11 samples were analyzed from four locations.

Potassium-40, a naturally occurring isotope, was found in all 11  !

samples. For the indicator locations the average potassium-40 activity was 2848 pC1/kg wet with a range of 973 to 5590 pCi/kg wet. Naturally occurring beryllium-7 was detected in three )

l samples, two from indicator station 12.7 and one from E-3.5, with j an average activity of 650 pC1/kg wet and a range of 54-1170 pCi/kg wet.

No 1-131, Cs-134 or Cs-137 were detected in food products during 1994.

H. Broadleaf Vegetation Results of gamma isotopic analyses of broadleaf vegetation samples are contained in Table 19. A total of 24 samples were analyzed from three locations. Potassium-40, a naturally occurring isotope, was found in all samples. He average potassium-40 activity for the control location was 5999 pCi/kg wet with a range of 1480 to 8930 i

pCi/kg wet. For the indicator locations the average potassium-40  !

i 21

._ . . ~.. .. . _ - .

l l

l activity was 3866 pCi/kg wet with a range of 1640 to 7950 pCi/kg

. wet. Naturally occurring beryllium-7 was detected in sixteen indi-  ;

cator samples with an average activity of 2775 pC1/kg wet; the range was 1080 to- 5490 pCi/kg wet. The eight samples from j control station SW-13.5 were found to have beryllium-7 with an j average activity of 1851. pCi/kg wet and a range of 1010-3730 l pCi/kg wet.  :

Thorium-228 was detected in one sample from indicator station SW-1.0 with an average activity of 135 pCi/kg wet.  !

Iodine-131, Cs-134 and Cs-137 were below the lower limit of de-  ;

tection in all samples. i h

[

i i

l I

CONCLUSIONS l

1 l

)

l IV. CONCLUSIONS i It is concluded from the levels obtained in environmental samples during 1994 and comparison of these levels to preoperational measure- l ments and operational controls, that the operation of CPSES in 1994 re- l sulted in no changes in measurable levels of radiation or radioactive materi-als in the environment except the tritium detected in Squaw Creek Reservoir has increased from the 1993 average of approximately 4400 pCi/l  ;

to approximately 6450 pCi/1. This increase has been expected, based on 2 -

unit operation. The atmospheric environment was sampled for airborne  :

particulate matter, radiolodine, and direct radiation. The terrestrial envi- i ronment was sampled for milk, groundwater, surface-drinking water, food products and broadleaf vegetation. 'Ihe aquatic environment was sampled i for surface water, fish and shoreline sediment. 'Ihe analyses of these sam-ples provided results which were either below the measurement detection limits or were indicative of natural terrestrial and cosmic ray radiation lev-els, except for the tritium in the surface water of Squaw Creek Reservoir ,

which was far below the reporting levels for radioactivity concentrations in' environmental samples.

i i

i i

1 l

l l

l i

REFERENCES l

l l

25

,t h

i V. REFERENCES '!

1. U.S. Nuclear Regulatory Commission, "An Acceptable Radiological Environmental Monitoring Program", Radiological- Assessment l

Branch Technical Position. November 1979, Rev.1

2. National Council on Radiation Protection and Measurements,  !

t

" Environmental Radiation Measurements", NCRP Report No. 50,  ;

Washington, D.C., December 27,1976  ;

3. Oakley, D.C., " Natural Radiation Exposure in the United States", i ORP/SID Z2d. Office of Radiation Programs, U.S. Environmental -

Protection Agency. Washington, D.C., June 1972 ,

1

4. Comanche Peak Steam Electric Station Units 1 and 2 Technical Specifications  :

5. Offsite Dose Calculation Manual For TU Electric Comanche Peak Steam Electric Station Units 1 and 2.

I t

t t

i I

26 r -

I DATA TABLES s

27

TABLE 1 (PAGE 1 OF 2)

T U ELECTRIC COMANCIIE PEAK STEAM ELECIRIC STATION '

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM -- 1994 Identification by Number of Sector and Distance Sampling Analytical Media inc=tiana (MtI*al Frennenry tal Analyses F W = nry tal Gamma Exposure 43 N-1.45: N-4.4: N-6.5: Q.A Thermoluminescent Q.A N-9.4: NNE-1.1 Dostmetsy NNE-5.65: NE-1.7: NE-4.8:

ENE-2.5: ENE-5.0; E-0.5:

E-1.9; E-3.5: E-4.2:

ESE-1.4: ESE-4.7: SE-1.3:

SE-3.85: SE-4.6: SSE-1.3:

SSE-4.4: SSE-4.5: S-1.5:

S-4.2: SSW-1.1: SSW-4.4:

SW-0.9: SW-4.8; SW-12.3:

WSW-1.0: WSW-5.35:

WSW-7.0; W-1: W.2: W-5.5 WNW-1: WNW-5.0; WNW-6.7:

NW-1: NW.5.7: NW-9.9:

g NNW-1.35: NNW-4.6 Air Particulate 8 N-9.4 W Gross Beta W-'

Air Iodine E-3.5: SSE-4.5 Gamma Spectrometry Filter QC SW-12.3: Gamma Spectrometry NW-1.0; N-1.45: SW/WSW-0.95 Charcoal Castridge W S/SSW-1.2 Surface Water 4 N-19.3: ESE-1.4: N-1.5 M (b) Gamma Spectsometry M NE-7.4 Tritium QC Groundwater 5 SSE-4.6 Q Gamma Spectrometry Q W-1.2: WSW-0.1 N-9.8: N-1.45 Tritium Q Water-Surface 2 NNW-0.1: N-9.9 S M (c) Gross Beta M Drinking Gamma Spectrometry- M Iodine-131 SM Tritium QC

TABLE 1 (PAGE 2 OF 2)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STAT 10N RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM -- 1994 Identification by Number of Sector and Distance Sampling Analytical Media Imcations iMiles) Freauency fal Analyses Freauenev fal ~

Sediment 3 N-9.9: NNE-1: NE-7.4 SA Gamma Spectrometry SA

. Fish 2 NNE-8; ENE-2 SA Gamma Spectrometry SA Milk 1 SW-14.5: SW-13.5 (e) SM (d) Iodine-131 S M (d)

Gamma Spectrometry SM (d)

Food Products 4 E-4.2: ENE-9.0; E-3.5: MH Gamma Spectrometry MH SW- 12.7 -

Iodine-131 MH '

N Broadleaf 3 N-1.45: SW-I.0: SW-13.5 M Gamma Spectrometry M w Vegetation Iodine-131 M (a) Frequency Codes Are: W = Weekly M = Monthly Q = Quarterly QC = Quarterly Composite SM = Semimonthly (i.e.. once per 2-week period)

MH = Monthly during availability for harvest SA = Semlannual A = Annual (b) Surface water samples from Squaw Creek Reservoir are monthly composites of weekly grab samples. Samples from Imke Granbury are '

monthly composites of weekly grab samples when Lake Granbury is receiving letdown from Squaw Creek Reservoir; otherwise they are monthly grab samples.

(c) Drinking water samples are a composite of weekly grab samples over a 2-week period when 1-131 analysis is WA,....cd: otherwise they are monthly composites of weekly grab samples.

(d) Milk sample collection and analysis frequency is semimonthly when animals are on pasture. Otherwise samples are collected and analyzed monthly.

(e) Milk sample location SW-13.5 moved operations to SW-14.5 for Novesaber and December 1994.

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EEY OF ENVIRONMENTAL SAMPLING LOCATIONS SAMPLING LOCATION SAMPLE SAMPLING LOCA' HON SAMPLE POINT ISFI IUR MHFM N POINT iRFi:1UK Mff FM N A1 N-1.45 A R28 SW-4.8 R A2 N-9.4 A R29 SW-12.3 R A3 E-3.5 A R30 WSW-1.0 R ,

A4 SSE-4.5 A R31 WSW-5.35 R A5 S/SSW-1.2 A R32 WSW-7.0 R A6 SW-12.3 A R33 W-1.0 R A7 SW/WSW-0.95 A R34 W-2.0 R A8 NW-1.0 A R35 W-5.5 R R36 WNW-1.0 R R37 WNW-5.0 R R38 WNW-6.7 R R39 NW-1.0 R R40 NW-5.7 R R1 N-1.45 R R41 NW-9.9 R R2 N-4.4 h R42 NNW-1.35 R R3 N-6.5 R R43 NNW-4.6 R R4 N-9.4 R SW1 N- 1.5 SW R5 NNE-1,1 R SW2 N-9.9 SW/DW R6 NNE-5.65 R SW3 N-19.3 SW R7 NE- 1.7 R SW4 NE-7.4 SW R8 NE-4.8 R SW5 ESE-1.4 SW R9 ENE-2.5 R SW6 NNW-0.1 SW/DW RIO ENE-5.0 R GW1 W-1.2 GW/DW R11 E-0.5 R GW2 WSW-0.1 GW/DW R12 E-1.9 R GW3 SSE-4.6 GW/DW R13 E-3.5 R GW4 N-9.8 GW/DW R14 E-4.2 R GW5 N-1.45 GW/DW R15 ESE-1.4 R SSI NNE-1.0 SS R16 ESE-4.7 R SS2 N-9.9 SS R17 SE- 1.3 R SS3 NE-7.4 SS R18 SE-3.85 R R19 SE-4.6 R M4 SW-14.5 M R20 SSE- 1.3 R F1 ENE-2.0 F R21 SSE-4.4 R F2 NNE-8.0 F R22 SSE-4.5 R FPI ENE-9.0 FP  ;

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R - Direct Radiation SS -

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SW - Surface Water M -

Mlik BL - Broadleaf Vegetation DW - Drinking Water 31

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36 i

TABLE 4 (PAGE 1 OF 3)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STATION CONCENTRATIONS OF GROSS BETA EMITIERS IN AIR PARI 1CULATES Results in Units of 10-3 pCI/m3 1 2 s.d.

SA ON NW-1.0 S/SSW-1.2 SW-12.3 SSE-4.5 E-3.5 N-1.45 N-9.4 SW/WSW-0.95 JANUARY 12/28 4 1/04/94 3114 3214 2213 3014 3414 3114 3114 2914 01/04-01/11/94 5414 3114 3014 3114 3414 3514 2914 2914 01/11-01/17/94 4014 4014 3614 6015 5715 6015 41i4 4515 01/17-01/25/94 2513 2Gi3 2213 2313 2413 2613 2713 2513' 01/25-02/01/94 2513 2513 2413 2413 2513 2513 2813 2313 FEBRUA q 02/01-02/08/94 3314 3114 3214 3214 3714 3714 3514 3114 02/08-02/14/94 3114 2814 3514 3014 2814 3014 3214 3114 02/14-02/21/94 2613 2513 2913 2213 2613 2413 2713 2313 02/21-03/01/94 2713 2713 2813 2313 2713 2313 2813 2613 d MARCH 03/01-03/08/94 2813 2113 2513 2813 2513 2613 11 3 2213 03/08-03/15/94 1913 1713 2113 1913 2013 1713 wi3 1913 03/15-03/22/94 1813 1513 1713 1713 2013 2613- 20i3 1013 03/22-03/28/94 2213 1813 2213 1813 2113 2414 1913 20i3 APRIL 03/28-04/05/94 2213 2013 2112 1913 20i3 2013 1913 1813 04/05-04/11/94 1813 1713 2514 1813 1413 22i3 1713 1913 04/11-04/19/94 2013 1613 2213 1913

• 2013 1913 1713 04/19-04/26/94 21t3 1913 2213 1813 2113 2213 2013 21i3 04/26-05/03/94 9.113 5 7.112.3 8.012.4 8.612.5 7.012.4 8.112.4 7.512.4 9.612.5

• Found motor inoperable; could not verify postthre flow; sample invalkl.

TABLE 4 (PAGE 2 OF 3)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STAT 10N CONCENTRATIONS OF GROSS BETA EMITIERS IN AIR PARI 1CUIATES Results in Units of 10-3 pCl/m3 1 2 s.d.

STAT N #-1.0 SW/WSW-0.95 S/SSW-1.2 SW-12.3 SSE-4.5 E-3.5 N- 1.45 N-9.4 m

05/03-05/09/94 1213 1313 1613 1113 1113 1313 1413 1313 05/09-05/16/94 1613 1013 1713 1213 1113 1313 1313 1513 05/16-05/24/94 2113 1913 2313 1713 1713 2013 20i3 2213 05/24-05/31/94 1913 1813 1813 1913 1713 2013 2113 1913 JUNE 05/31-06/08/94 1513 1012 1212 1112 1012 1112 9.912.4 13t3 06/08-06/14/94 1513 1613 1613 1613 1813 1913 1913 1813 06/14-06/21/94 1413 1313 1613 1213 1213 1413 1313 1513 ,

06/21-06/28/94 2213

• 2513 2113 2113 2313 2113 2713 g d132 ,

06/28-07/05/94 2613 2613 **

2513 2013 2113 2613 2213 07/05-07/12/94 1613 1613 1713 1813 1613 1413 15i3 1613 07/12-07/19/94 2313 2313 2813 2413 2213 26i3 23i3 25i3 07/19-07/26/94 21i3 2113 2714 2413 1813 2513 2113 1412 07/26-08/02/94 2514 1813 2614 2814 2113 25i4 2414 27i4 AUGUST 08/02-08/09/94 1713 15i3 1613 1213 1913 1413 15i3 1313 08/09-08/16/94 3013 2813 3113 2713 2713 32i3 28t3 3013 08/16-08/23/94 2313 1913 2213 2113 2113 23i3 23i3 2113 08/23-08/30/94 1113 1513 1913 16i3 1813 1513 1713 1813 4

Sample not ellected, eL'u aA failure.

' Sample not collected y.+.;y, Alter loaded incorrectly.

e TABLE 4 (PAGE 3 OF 3)

T U El.EC'IRIC COMANCHE PEAK STEAM ELECTRIC STATION CONCENTRATIONS OF GROSS BETA EMITIERS IN AIR PARI 1CULA1ES Results in Units of 10-3 pCl/m 312 s.d.

A ON NW-1.0 S/SSW-1.2 SW-12.3 bSE-4.5 E-3.5 N-1.45 N-9.4

, SW/WSW.O.95 SEFIEMBER 08/30-09/06/94 1413 1513 1813 1513 1513 1513 17i3 1713 09/06-09/13/94 2513 21i3 2413 2013 2013 1913 2513 2113 09/13-09/20/94 1513 1613 1613 1313 1813 1613 1813 18i3 09/20-09/27/94 2613 2013 2813 2313 2313 2113 2413 2713-OCTOBER 09/27-10/04/94 3514 3314 4214 3514 3914 3714 4114 3814 10/04-10/11/94 2313 2813 2613 2213 2213 22i3 2413 2613 10/11-10/17/94 1813 1413 1713 1413 :1913 1413 1713 1813 10/17-10/26/94 1412 1412 1913 1713 1913 - 1812 1913 10/26-11/02/94 2313 2513 2913 2513 2613 2413 2613 25i3 b NOVEMBER 11/02-11/08/94 2414 2114 2414 20t4 20i4 2514 22i4 26i4 11/08-11/15/94 1813 1813 2113 20i3 1613 2113 21i3 2013-11/15-11/21/94 2313 21i3 2714 2213 22i3 2414~ 23i4 25i4 11/21-11/28/94 2113 2214 2314 2113 20i3 23i4 2113 20i3 DECEMBER 11/28-12/06/94 23i3 2313 2613 2213 2713 22i3 2613 2713 12/06-12/13/94 2813 2313 3214 25i3 2913 3013 2913 3113 12/13-12/20/94 2613 2513 3614 31i3 2813 3113 28i3 '31i4 12/20-12/27/94 2813 3113 3213 3113 3013 3514 3213 35t4 12/27-01/03/95 27i3 23i3 30i4 2213 23i3 2914 2413 2814

• Sample not couected - motor out of service.

_ _ _ _ . _ - ~ . _ , - . . . - _ , ~ , . _ . _. - , - . - _ . - . _ - . _ . . . . _ _ _ . , _ , , ~ _ . . - . . - . _ . - _ , _ . . - - - _ - _ _ _ _ _ _ _ _ _ _ _ _ .

.l TABLE 5 (PAGE 1 OF 2)

T U ETEC'IRIC COMANCHE PEAK STEAM ELECTRIC STA'110N CONCEbrlRA110NS OF GAMMA EMITF.RS* IN AIR PAR'11CULA1E FIL'IERS Results in Units of E-03 pCl/m3 1 2 s.d.

IDCATION COMPOSTIE PERIOD Be-7 K-40 RU-103 Cs-134 CS-137 FIRST QUARIER NW- 1.0 12/28/93-03/28/94 94.519.4 <10 <C. 7 <0.7 <0.5 SW/WSW-0.95 12/28/93-03/28/94 75.617.6 <20 <0.6 <0.6 <0.5 S/SSW-1.2 12/28/93 03/28/94 83.118.3 <9 <0.6 <0. 5 ' -<0.7 SW-12.3 12/28/93-03/28/94 76.617.7 <7 <0.5 <0.4 <0.5 -

SSE-4.5 12/28/93-03/28/94 86.718.7 <20 <0.7 <0.6 <0.6 E-3.5 12/28/93-03/28/94 81.618.2 <9 <0.5 <0.4 <0.6 N- 1.45 12/28/93-0?/28/94 84.718.5 <20 <0.8 d).7 <0.6 N-9.4 12/28/93-03/28/94 74.417.4 <7 <0.5 <0.4 <0.3 b

SECOND QUAKIER NW-1.0 03/28/94-06/28/94 79.818.0 <10 <0.6 <0.5 <0.5 SW/WSW-0.95 03/28/94-06/28/94 72.917.3 <9 <0.5 <0.4 <0.4 S/SSW-1.2 03/28/94-06/28/94 93.319.3 <7 <0.5 <0.5 <0.5 SW-12.3 03/28/94-06/28/94 78.117.8 <7 <0.4 <0.4 - <0.4 SSE-4.5 03/28/94-06/28/94 75.217.5 <8 <0.4 <0.4 <0.4 E-3.5 03/28/94-06/28/94 79.017.9 9.2913.86 <0.6 <0.6 <0.6 N-1.45 03/28/94-06/28/94 83.918.4 <10 <0.7 <0.5 <0.5 N-9.4 03/28/94-06/28/94 88.618.9 <20 <0.7 <0.6 <0.6

• All other gamma emitters were <LLD.

TABLE 5 (PAGE 2 OF 2)

T U ELECTRIC COMANCHE PEAK SIEAM ELECTRIC STA110N CONCENTRA'I1ONS OF GAMMA EMITIERS* IN AIR PAR 11CULKIE FILTERS Results in Units of E-03 pCI/m3 i 2 s.d.

IDCA110N COMPOSrTE PERIOD Be-7 K-40 RU-103 Cs-134 CS-137 THIRD QUARTER NW-1.0 06/28/94-09/27/94 106111 <10 <0.6 <0.5 <0.5 SW/WSW-0.95 06/28/94-09/27/94 74.717.5 <8 <0.6 <0.4 <0.4 S/SSW-1.2 06/28/94-09/27/94 105111 <10 <0.7 <0.5 <0.5 SW-12.3 06/28/94-09/27/94 76.417.6 8.6314.19 <0.6 <0.6 <0.6 SSE-4.5 06/28/94-09/27/94 87.418.7 <9 <0.6 <0.5 <0.6 E-3.5 06/28/94-09/27/94 80.118.0 <8 <0.5 <0.4 <0.5 N- 1.45 06/28/94-09/27/94 96.5t9.6 <20 <0.8 <0.7 <0.6 N-9.4 06/28/94-09/27/94 84.218.4 <10 <0.6 <0.5 <0.5 b

FOURIH QUARIER NW- 1.0 09/27/94-01/03/95 61.716.2 <10 <0.5 <0.4 <0.4 SW/WSW-0.95 09/27/94-01/03/95 87.018.7 <9 <0.6 <0.5 <0.5 S/SSW-1.2 09/27/94-01/03/95 89.819.0 <9 <0.5 <0.5 <0.6 SW-12.3 09/27/94-01/03/95 75.517.6 <8 <0.5 <0.4 <0.5 SSE-4.5 09/27/94-01/03/95 70.617.1 <20 <0.6 <0.6 <0.5 E-3.5 09/27/94-01/03/95 86.518.6 <8 <0.5 <0.4 <0.5 N-1.45 09/27/94-01/03/95 66.516.7 6.5012.98 <0.5 <0.4 <0.4 N-9.4 09/27/94-01/03/95 94.8f9.5 <10 <0.6 <0.5 <0.5

• All other gamma emitters were < LID.

1 J

TABLE 6 T U ELECIRIC COMANCHE PEAK STEAM ELECTRIC STATION CONCElfrRATIONS OF I-131 IN MILK l Results in pCi/li 2 s.d.

i COLLECI1ON ,

MOITIE DATE SW-14.5 SW-13.5 JANUARY 01/11/94 <0.2 FEBRUARY 02/08/94 <0.2 MARCH 03/08/94 <0.2  :

APRIL 04/05/94 <0.3 l l

MAY 05/03/94 <0.2 i 05/16/94 <0.2 l 05/31/94 <0.3 l JUNE 06/14/94 < 0.2 l 06/29/94 <0.2' .l 1

JULY 07/12/94 <0.2 i 07/26/94 <0. 5  !

T AUGUST 08/09/94 < 0.2

<0.2

)

08/23/94 1 SEPTEMBER 09/06/94 <0.2 i 09/20/94 < 0.2  !

OCTOBER 10/17/94 < 0.2  !

NOVEMBER 11/15/94 <0.3 l i

DECEMBER 12/15/94 <0.2 e i

)

1

TABLE 7 (PAGE 1 OF 2)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STA110N CONCENTRATIONS OF GAMMA EMITIERS* IN MILK Results in Units of pct / liter i 2 s.d.

LOCA110N COLLECTION DKIE K-40 Cs-134 Cs-137 La-140/Ba-140 STATION SW-13.5 JANUARY 01/11/94 13401130 <4 <5 <5 FEBRUARY 02/08/94 15001150 <4 <5 <7 MARCH 03/08/94 12101120 <4 <5 <6 APRIL 04/05/94 13901140 <4 <4 <7 MAY 05/03/94 12901130 <3 <3 <4 05/16/94 14101140 <5 <4 <6 05/31/94 12601130 <3 <3 <4 JUNE 06/14/94 13801140 <3 <3 <4 06/29/94 13401130 <4 <4 <5 JULY 07/12/94 13701140 <4 <4 <5 07/26/94 1i801130 <3 <4 <5 AUGUST 08/09/94 14201140 <3 <3 <4 08/23/94 11901120 <4 <4 <5 SEITIEMBER 09/06/94 1390il40 <4 <3 <4 09/20/94 12701130 <4 <4 <6 OC1DBER 10/17/94 1410il40 <4 <5 <6

• All other gamma emitters were <LLD.

TABLE 7 (PAGE 2 OF 2)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STA110N CONCENTRA~I1ONS OF GAMMA EMITIERS* IN MILK Results in Units of pct / liter i 2 s.d.

LOCKI1ON COLLECTION DATE K-40 Cs-134 Cs-137 La-140/Ba-140 STA110N SW-14.5 NOVEMBER 11/15/94 15101150 <3 <3 <4 DECEMBER 12/15/94 14101140 <4 <4 <5 h

• All other gamma emitters were <LLD.

TABLE 8 (PAGE 1 OF 2)

T U ELECTRIC COMANCllE PEAK STEAM ELECTRIC STATION CONCEN'IRATIONS OF GAMMA EMITIERS* IN GROUNDWA'IER Results in Units of pCl/li 2 s.d.

K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb/Zr 95 Cs-134 Cs-137 Ba/La-140 STAT 10N W-1.2

<60 <4 <4 <8 <4 <8 <4 <4 <4 <7 04/05/94 <8 <4 <9 <4 <4 <4 <7 07/05/94 <60 <4 <4

<4 <4 <8 <4 <8 <4 <5 <4 <8 10/04/94 <60

<100 <4 <5 <10 <4 <10 <5 <5 <5 <6 01/03/95 STATION WSW-0.1

<3 <3 <8 <3 <8 <3 <3 <4 <8 04/05/94 <50 07/05/94 <10 <4 <10 <5 <5 <5 <9 08/19/94 <100 <4 <4

<50 <3 <3 <8 <3 <7 <4 <3 <3 <6 10/04/94

$ 01/03/95" STAT 10N SSE-4.6 53130 <4 <4 <9 <4 <9 <4 <4 <4 <8 04/05/94 <4 <8 <4 <3 <3 <5 07/05/94 <50 <4 <3 <8

<3 <5 <3 <6 <3 <3 <3 <4 10/04/94 <50 <3

<6

<100 <4 <4 <9 <4 <9 <5 <4 <5 01/03/95 STAT 10N N-9.8

<50 <3 <3 <7 <4 <8 <4 <3 <4 <6 01/19/94 "* <7 <3 <7 <3 <3 <3 <5 04/05/94 78124 <3 <3

<7

<100 <4 <4 <9 <4 <8 <4 <4 <4 07/05/94 <8 <4 <8 <4 <4 <4 <6 10/04/94 <100 <4 <4

<3 <8 <4 <8 <4 <4 <4 <6

<3 01/03/95 <60 i

• All other gamma emitters were LLD.

• • Pump not in service.

• * * 'lhls sample was collected on 01/19/94 because repairs were being made to water tank. "Ihis sample should have been collected in the fourth quarter of 1993.

TABLE 8 (PAGE 2 OF 2)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STATION CONCENTRAT10NS OF GAMMA EMITIERS* IN GROUNDWATER Results in Units of pCl/li 2 s.d.

K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb/Zr-95 Cs-134 ' Cs-137 Ba/Im-140 cot 1RC110M DATE STAT 10N N-1.45 04/05/94 <60 <3 <3 <8 <4 <7 <4 <4 <4 <8 07/05/94 <80 <3 <3 <6 <3 <7 <3 <3 <3 <5 10/04/94 <90 <3 <3 <6 <3 <6 <3 <3 <3 <5 01/03/95 <50 <3 <3 <7 <4 <7 <3 <4 <4 <6 b

I

• All other gamma emitters were IID.

TABLE 9 T U ELECTRIC COMANCHE PEAK STEAM ELEC'IRIC STATION CONCENIRATIONS OF TRITIUM IN GROUNDWATER Results in pCi/li 2 s.d.

COLLECTION TRITIUM _ l QUARTER- DATE LOCATION - ACTIVITY J 1 04/05/94 W-1.2 <1000 04/05/94 WSW-0.1 <1000 04/05/94 SSE-4.6 <1000 01/19/94* N-9.8 <200  !

04/05/94 N-9.8 <1000 04/05/94 N- 1.45 <1000 l

2 07/05/94 W-1.2 <2000 07/05/94 WSW-0.1 07/05/94 SSE-4.6 <2000 07/05/94 N-9.8 <2000 i 07/05/94 N- 1.45 <2000  !

l 3 10/04/94 W-1.2 <2000 l 10/04/94 WSW-0.1 <2000 l 10/04/94 SSE-4.6 <2000  !

10/04/94 N-9.8 <2000 10/04/94 N- 1.45 <2000

• i 4 01/03/95 W-1.2 <2000  :

01/03/95 WSW-0.1 .

01/03/95 SSE-4.6 <2000  ;

01/03/95 N-9.8 <2000 01/03/95 N- 1.45 <2000

'Ihis sample was collected on 01/19/94 because repairs were being ,

made to the water tank. 'Ihis sample should have been collected in  ;

the fourth quarter of 1993 (10/01-12/31).  !

• Sample not collected. I 47 l l

e TABLE 10 T U ELECDUC COMANCHE PEAK STEAM ELECTRIC STATION GROSS BETA CONCENTRATIONS IN WATER-SURFACE / DRINKING Results in pCi/li 2 s.d.

I COLLECTION MONTH PERIOD NNW-0.1 N-9.9 >

JANUARY 01/18/94-02/08/94 17i4 9.2i3.1 FEBRUARY 02/14/94-03/08/94 19i4 8.5i2.5 -

MARCH 03/15/94-04/05/94 18i4 1013 APRIL 04/12/94-05/03/94 20i3 1012 l MAY 05/09/94-05/31/94 17i3 9.8tl.7 JUNE 06/08/94-06/28/94 21i3 12i2 JULY 07/05/94-07/26/94 17i4 14i3 AUGUST 08/02/94-08/23/94 20t3 13i2  !

l SEfrrEMBER 08/30/94-09/20/94 9.7il.8 13i3 OCTOBER 09/27/94-10/17/94 2814 21 3 NOVEMBER 10/26/94-11/1 T- /94 16i3 13i2 DECEMBER 11/21/94-12/13/94 24t5 12i2 12/20/94-01/10/95 17i2 8.811.7-i I

l I

48 4

TABLE 11 (PAGE 1 OF 2)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STA110N CONCENTRATIONS OF GAMMA EMITTERS

• IN WATER SURFACE / DRINKING Results in Units of pCI/I i 2 s.d.

Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb/Zr-95 Cs-134 Cs-137 Ba/Im-140 STATION NNW-0.1 01/18/94-02/08/94 <3 <3 <7 <4 <8 <3 <3 <4 <6 02/14/94-03/08/94 <4 <4 <8 <4 <8 <4 <4 <4 <6 03/15/94-04/05/94 <3 <3 <7 <4 <7 <4 <3 <4 <7 04/12/94-05/03/94 <3 <3 <6 <4 <6 <3 <3 <4 <5 05/09/94-05/31/94 <4 <4 <8 <4 <8 <4 <4 <4 <6 06/08/94-06/28/94 <3 <3 <7 <3 <6 <3 <3 <3 <5 8 07/05/94-07/26/94 <3 <3 <7 <3 <7 <3 <4 <4 <6 08/02/94-08/23/94 <3 <3 <6 <3 <7 <3 <4 <4 <6 08/30/94-09/20/94 <3 <3 <7 <4 <7 <3 <3 <4 <4 09/27/94-10/17/94 <3 <3 <7 <4 <7 <4 <4 <4 <6 10/26/94-11/15/94 <3 <3 <6 <3 <7 <3 <3 <4 <4 11/21/94-12/13/94 <3 <3 <6 <3 <6 <3 <3 <3 <4 12/20/94-01/10/95 <4 <4 <9 <4 <10 <5 <5 <5 <7

• All other gamma emitters were LLD.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ - _ ~.+. _ ___- -v s _ . _ = - - , . ,-v ----#- , - - - <-_ _ _ -

-_- _ _ _ _ _ _ _ _ . __ m_- ______ __-.

. TABLE 11

, (PAGE 2 OF 2)

T U ELECTRIC COMANCHE PEAK STEAM ELECI'RIC STAT 10N CONCENTRATIONS OF GAMMA EMITIERS* IN WATER SURFACE / DRINKING Results in Units of pCl/l i 2 s.d.

i I v Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb/Zr-95 Cs-134 Cs-137 Ba/ta-140' cot 1RCI10N DATE STATION N-9.9 .

01/18/94-02/08/94 <3 <3 <7 <3 <7 <3 <3 <4 <5 02/14/94-03/08/94 <4 <4 <9 <4 <9 <5 <5 <5 <7 03/15/94-04/05/94 <4 <4 <9 <4 <8 <4 <4 <4 <8 04/12/94-05/03/94 <3 <3 <7 <3 <6 <3 <3 <3 <5 05/09/94-05/31/94 <4 <4 <10 <5 <10- <5 <5 <5 <6 06/08/94-06/28/94 <3 <3 <7 <4 <7 <3 <4 <4 <6 07/05/94-07/26/94 <4 <4 <7 <4 <7 <4 <4 <4 <6 i 08/02/94-08/23/94 <3- <3 <7 <3 <7 <4 <4 <4 <5' 08/30/94-09/20/94 <4 <4 <8 <4 <9 <4 <4 <5 <7 i 09/27/94-10/17/94 <4 <4 <8 <4 <8 <4 <4 <4 <7 10/26/94-11/15/94 <3 <3 <7 <4 <7 <4 <4 <4 <5 11/21/94-12/13/94- <4 <4 <8 <4 <9 <4 <4 <4 <6 12/20/94-01/10/95 <3 <3 <7 <4 <7 <3 <4 <4 <5 t

4  !

• All other genuna emitters were 11D.

. - . . . , - -.-.-.,.-.-....._.-,....----.a, . . . . . ~ . . . ..-,-... -. - , . . . - . - - . , - , . ~ . . - . - . . . , . . . .

TABLE 12 T U ELECIRIC '

COMANCHE PEAK STEAM ELECTRIC STATION CONCENTRATIONS OF I-131 IN WATER-SURFACE / DRINKING Results in pCi/li 2 s.d.  !

COLLECI1ON  !

MOlfrH PERIOD NNW-0.1 N-9.9 JANUARY 01/18/94-01/25/94 <0.2 <0.2  :

01/18/94-02/08/94 <0.5 <0.4 i FEBRUARY 02/14/94-02/21/94 <0.2 <0.2 t 02/14/94-03/08/94 <0.2 <0.2 MARCH 03/15/94-03/22/94 <0.3 <0.3  :

03/15/94-04/05/94 <0.4 <0.5 APRIL 04/11/94-04/19/94 < 0.2 <0.2 04/12/94-05/03/94 < 0. 4 <0.6 MAY 05/09/94-05/16/94 < 0.3 '

05/09/94-05/17/94 <0.2 05/09/94-05/31/94 <0.6 <0.5 JUNE 06/08/94-06/14/94 < 0. 3 <0.4 06/08/94-06/28/94 < 0. 3 <0.3 JULY 07/05/94-07/12/94 <0.2 <0.2 i 07/05/94-07/26/94 <0.2 <0.2 l AUGUST 08/02/94-08/23/94 <0.4 <0.4 08/02/94-08/09/94 <0.3 <0.2 SEI7FEMBER 08/30/94-09/06/94 <0.3 <0.3 i 08/30/94-09/20/94 <0.4 <0.4 09/27/94-10/04/94 <0.2 <0.2 OC1X)BER 09/27/94-10/17/94 <0. 7 <0.4 10/26/94-11/02/94 <0.2 <0.2  ;

NOVEMBER 10/26/94-11/15/94 <0.6 <0.6 11/21/94-11/28/94 <0.3 <0.2 DECEMBER 11/21/94-12/13/94 < 0.6 <0.6 12/20/94-12/27/94 <0.3 <0.4 12/20/94-01/10/95 < 0. 4 <0.4 L

r 51 ,

1 TABLE 13 l T U ELECURIC COMANCHE PEAK STEAM ELECTRIC STATION  :

CONCENTRATIONS OF TRITIUM IN WATER-SURFACE / DRINKING -[

Results in pC1/1i 2 s.d. ,

I l

COLLECDON .

QUARTER PERIOD- NNW-0.1 N-9.9  ;

1 12/21/93-04/05/94 5200i200 <200 2 04/12/94-06/28/94 5600i1400 <2000 3 07/05/94-09/20/94 7400il500 <2000 [

4 09/27/94-12/13/94 7100i1600 <2000 i

)

l l

1 6

52

TABLE I4 (PAGE 1 OF 2)

T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STA110N CONCENTRATIONS OF GAMMA EMITTERS

• IN SURFACE WATER Results in Units of pCf/Ii 2 s.d.

Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb/Zr-95 Cs-134 Cs- 137 Ba/la-140 COURC'110N DKIE STA'ITON ESE-1.4, 01/18/94-02/08/94 <4 <4 <9 <4 <9 <5 <5 <5 <7 02/14/94-03/08/94 <3 <3 <7 <3 <8 <4 <3 <4 <5 03/15/94-04/05/94 <4 <4 <8 <4 <8 <4 <4 <4 <7 04/12/94-05/03/94 <4 <4 <9 <4 <8 <4 <4 <5 <6 05/09/94-05/31/94 <4 <4 <9 <4 <8 <4 <4 <4 <7 06/08/94-06/28/94 <4 <4 <8 <4 <8 <4 <4 <4 <6 07/05/94-07/26/94 <3 <4 <7 <4 <8 <3 <3 <4 <6 08/02/94-08/23/94 <4 <3 <8 <4 <7 <4 <4 <4 <5 08/30/94-09/20/94 <3 <3 <7 <4 <8 <3 <3 <4 <6 09/27/94-10/17/94 <4 <4 <8 <4 <9 <4 <4 <4 <7 10/26/94-11/15/94 <4 <4 <8 <4 <9 <4 <5 <5 <5 11/21/94-12/13/94 <3 <3 <7 <4 <8 <4 <4 <4 <5 12/20/94-01/10/95 <3 <3 <7 <3 <7 <4 <3 <3 <4 b

STATION N-1.5 01/18/94-02/08/94 <3 <3 <6 <3 <6 <3 <3 <3 <5 02/14/94-03/08/94 <3 <3 <7 <3 <6 <3 <3 <3 <5 03/15/94-04/05/94 <3 <3 <6 <3 <6 <3 -<3 <3 <6 04/12/94-05/03/94 <3 <3 <7 <4 <7 <4 <3 <3 <6 05/09/94-05/31/94 <3 <3 <8 <4 <7 <3 <4 <3 <5 06/08/94-06/28/94 <3 <3 <7 <3 <7 <3 <3 <4 <5 07/05/94-07/26/94 <3 <3 <8 <4 <8 <4 <3 <4 <6 08/02/94-08/23/94 <3 <3 <7 <3 <7 <3 <4 <4 <5 08/30/94-09/20/94 <2 <3 <6 <3 <6 <3 <3 <3 <4 09/27/94-10/17/94 <3 <3 <7 <3 <6 <3 <3 <5 <5 10/26/94-11/15/94 <3 <3 <6 <3 <6 <3 <3 <3 <4 11/21/94-12/13/94 <3 <3 <6 <4 <7 <4 <3 <4 <6 12/20/94-01/10/95 <3 <4 <8 <4 <7 <3 <4 <4 <6 l

l .

All other gamma emitters were <LLD.

i

T TABLE 14 (PACE 2 OF 2)

T U ELECTRIC COMANCHE PEAK dh ELECTRIC STA110N CONCENTRATIONS OF GAMMA EMITIERS* IN SURFACE WATER Results in Units of pCl/l i 2 s.d.

Mn-54 Co-58 Fe-59 Co-60 Zn 65 Nb/Zr-95 Cs-134 Cs-137 Ba/Im-140 STAT 10N NE-7.4 01/18/94-02/08/94 <4 <3 <7 <3 <8 <4 <4 <4 <7 02/14/94-03/08/94 <3 <3 <7 <3 <7 <3 <3 <3 <4 03/15/94-04/05/94 <3 <3 <6 <3 <5 <3 <3 <3 <6 04/12/94-05/03/94 <2 <3 <5 <2 <6 <3 <3 <3 <4 05/09/94-05/31/94 <2 <3 <5 <3 <5 <3 <3 <3 <5 06/08/94-06/28/94 <3 <3 <5 <3 <6 <3 <3 <4 <4 07/05/94-07/26/94 <4 <4 <9 <4 <8 <4 <4 <4 <6 08/02/94-08/23/94 <3 <3 <6 <3 <7 <3 <3 <3 <5 08/30/94-09/20/94 <4 <4 <9 <4 <9 <4 <4 <4 <6 09/27/94-10/17/94 <3 <3 <6 <3 <6 <3 <3 <4 <5 10/26/94-11/15/94 <3 <3 <6 <4 <7 <4 <4 <4 <5 11/21/94-12/13/94 <4 <4 <8 <4 <9 <4 <4 <4 <5 12/20/94-01/10/95 <4 <3 <8 <4 <9 <4 <4 <4 <5

$ STATION N-19.3 01/18/94-02/08/94 <3 <3 <7 <3 <6 <4 <4 <3 <7 02/14/94-03/08/94 <3 <3 <7 <3 <7 <3 <3 <3 <5 03/15/94-04/05/94 <2 <3 <6 <2 <5 <3 <3 <3 <5 04/12/94-05/03/94 <3 <3 <7 <3 <7 <3 <3 <3 <7 05/09/94-05/31/94 <4 <4 <8 <4 <8 <4 <4 <4 <6 06/08/94-06/28/94 <4 <4 <9 <4 <9 <5 <4 <5 <6 07/05/94-07/26/94 <3 <3 <7 <3 <6 <3 <3 <5 <5 08/02/94-08/23/94 <3 <3 <7 <4 <7 <3 <3 <4 <6 08/30/94-09/20/94 <3 <3 <6 <3 <7 <3 <3 <3 <5 09/27/94-10/17/94 <5 <5 <10 <5 <10 <5 <5 <5 <8 10/26/94-11/15/94 <4 <4 <8 <4 <8 <4 <4 <4 <6 11/21/94-12/13/94 <3 <3 <7 <3 <6 <3 <3 <3 <4 12/20/94-01/10/95 <3 <3 <6 <3 <7 <3 <3 <4 <4

'All other gamma emitters were <LLD

TABLE 15 T U ELECTRIC COMANCHE PEAK SIEAM ELECTRIC STA110N CONCENTRA110NS OF 'IRTI1UM IN SURFACE WATER Results in pCl/l i 2 s.d.

QUARTER COLLECTION PERIOD ESE-1.4 N- 1.5 NE-7.4 N-19.3 1 12/21/93-04/05/94 48001200 52001200 1 01/I1/94-04/05/94 <200 <200 2 04/12/94-06/28/94 590011400 640011400 2 05/03/94-06/28/94 <2000 <2000 3 07/05/94-09/20/94 650011500 790011500 <2000 <2000 4 09/27/94-12/13/94 590011500 630011600 4 10/17/94-12/13/94 <2000 <2000 3

TABLE 16 T U ELECTRIC COMANCHE PEAK STEAM ELECTRIC STA~I1ON CONCEPrrRA~I1ONS OF GAMMA EMrITERS* IN FISH Results in pCl/Kg (wet) i 2 s.d.

COLLECTION DKIE STATION DESCRIPITON K-40 Mn-54 Co-58 Fe Co-60 Zn-65 Cs-134 Cs-137 05/11/94 ENE-2.0 Channel Cat 24701250 <10 <10 <30 <10 <20 <10 <10 10/18/94 ENE-2.0 CatAsh 29201290 <20 <20 <60 <20 <40 <20 <20 10/18/94 ENE-2.0 Lgmth Base 38501380 <10 <20 <50 <10 <40 <20 <20 05/13/94 NNE-8.0 Strfpped Bass 33401330 <10 <20 <40 <10 <30 <10 <10 05/13/94 NNE-8.0 Channel Cat 29301290 <10 <20 <40 <10 <30 <10 <10 10/20/94 NNE-8.0 Strl Bass 32601330 <20 <20 <60 <20 <50 <20 <20 10/20/94 NNE-8.0 Ca 27301270 <10 <20 <50 <10 <30 <10 <10 10/20/94 NNE-8.0 Crapple 29501290 <20 <30 <70 <20 <50 <20 <20-b A i

i t

• All other gamma emitters were LLD.

- . . .- . , - - - , , , ..-- ---~ ,-,

. -.-,~..a --. , , , -

. . , + , . - ~ ~ . , , -- , - . . . - . - -- .,,----..-,n . - . . . - . - - - - . -

TABIE 17 T U ELECIRIC COMANCHE PEAK STEAM EIECTRIC STATION CONCENTRAVONS OF GAMMA EMITIERS* IN SEDIMENT Results in pCl/kg (dry) i 2 s.d.

COllECI1ON DATE STAVON Be-7 K-4 0 Cs-134 Cs-137 Pb-212 Bi-214 Pb-214 Ra-226 Th-228 STATION N-9.9 01/04/94 SS2 <200 11001200 <20 <20 94122 333140 388147 7071303' 92121 07/26/94 SS2 <200 55701560 <30 <20 249164' 231137 172142 7001352 242i35 STATION NNE-1.0 01/04/94 SSI <100 15901210 <20 49115 126t19 298135 349137 6801231 <30 07/26/94 SSI <200 18301200 <20 <20 126t18 304134 306135 4731223 122il7

$ STA110N NE-7.4 01/04/94 SS3 <100 24201240 <10 <10 127117 215128 246131 3501199 <40 07/26/94 SS3 <200 17101230 <20 <20 137122 244139 273141 <400 133121

• All other gamma emitters were LLD.

_ _ , . . _ _ . s . _ _ __ __ ..___ _ __ __

TABI.E 18 (PAGE 1 OF 1)

T U EIECTRIC COMANCHE PEAK STEAM E1.ECTRIC STA110N CONCENIRAllONS OF GAMMA EMTTIERS* IN FOOD PRODUCTS Results in Units of pCl/kg (wet) i 2 s.d.

COILECTION STATION DESCRIPTION DATE Be-7 K-40 1-131 Cs-134 Cs-137 E-4.2 01/11/94

• 02/08/94

• 05/08/94 * '

04/05/94

• 05/03/94

• 05/24/94

• Watermelon 07/26/94 <30 973197 <6 <3 <3 SW- 12.2 01/11/94

• 02/08/94

• 03/08/94

• 04/05/94

• 05/03/94

• g SW- 12.7 (New location)

Onions Cucumber 05/24/94 06/29/94

<70

<50 11601120 19201190

<10

<10

<7

<5

<7

<6 Tomato 07/26/94 <60 27801280 <10 <7 <6-08/23/94

• 09/20/94 ~

10/17/94

• Turnip Green 11/15/94 726173 31701320 <10 <9 <9 Turnip Green 12/13/94 11701120 46501470 <10 <9 <9 E-3.5 Squash 06/29/94 <70 19701200 <10 <8 <8 (New location) Squash 07/26/94 <70 55901560 <20 <8 <9 Cherry Tomato 08/23/94 54131 46501460 <8 <5 <5 Squash 09/20/9i <50 15901160 <10 <6 <6 10/17/94

• 11/15/94 ~

12/13/94 *"

ENE-9.0 Pecans 11/15/94 <50 2870i290 <10 <6 <6

• All other gamma emitters were <llD.

" Sample not available.

TABLE 19 (PAGE 1 OF 2)

T U ELECIRIC COMANCHE PEAK STEAM ELECTRIC STAVON CONCENTRA710NS OF GAMMA EMITIERS* IN BROADLEAF VEGETAVON Results in Units of pCi/kg (wet) i 2 s.d.

COLLEC110N STAT 10N DESCRIPI1ON DATE Be-7 K-40 I-131 " Cs-134 Cs-137 SW-13.5 01/11/94 (BL3) 02/08/94 03/08/94 ,

04/05/94 Blood-scd 05/03/94 1800i180 62101620 <4 <10 <10 t Bloodweed 05/24/94 13301130 8930i890 <6 <7 <7 Bloodweed 06/29/94 13101150 86101860 <4 <20 <20 Bleed icd 07/26/94 15701160 67801680 <3 <20 <20 Bloed cd 08/23/94 17401170 66601670 <3 <20 <20 Blevd-med 09/20/94 23201230 52501520 <7 <20 <20 Coastal Bermuda 10/17/94 10101150 40701410 <10 <20 <20 Coastal Bermuda 11/15/94 37301370 1480il80 <8 <10 <10

$ 12/13/94 "

N-1.45 01/11/94 (BL1) 02/08/94 03/08/94 ,

04/05/94 Sumac 05/03/94 1080i110 3230i320 <7 <10 <10 Sumac 05/24/94 15401150 7950i790 <7 <10 <20 Sumac 06/28/94 21001210 33501330 <8 <20 <20 Sumac 07/26/94 1920i190 3880i390 <5 <10 <10 Sumac 08/23/94 1910i190 3630i360 <7 <10 <10 Sumac 09/20/94 27301270 30001300 <8 <20 <20 Sumac 10/17/94 22701230 3300i330 <20 <20 <20 Summe 11/15/94 54901550 31101310 <10 <10 <10 12/13/94

• All other pmma emitters are LID

• • Sample Not Couected. See Appendit C for explanation.

• *

• By Radiochemkal Analysis 1

_ __._ _ _ __________ ___________________________m___ _ _ _ _ _ _ _ _ _ _ . . . - . _ . . . - a

)

TABLE 19 (PAGE 2 OF 2)

T U ELECTRIC COMANCIIE PEAK STEAM ELECTRIC STA'I1ON CONCENTRAT10NS OF GAMMA EMrTIERS* IN BROADLEAF VEGETAT10N Results in Units of pCl/kg (wet) i 2 s.d.

COLLEC110N STATION DESCRIP110N DATE Be-7 K-40 I-131

• Cs-134 Cs-137 SW-1.0 01/11/94 "

(BL2) 02/08/94**

03/08/94" 04/05/94 "

Sumac 05/03/94 18601190 54601550 <7 <10 <10 Sumac 05/24/94 52201520 46401460 <6 <20 <20 Sumac 06/29/94 27101270 46501470 <4 <10 <10 Sumac 07/26/94 24601250 37501380 <5 <10 <10 Sumac 08/23/94 18501190 29301290 <4 <10 <10 Hackberry 09/20/94 51301510 53201530 <7 <20 <20 Sumac 10/17/94 26001260 16401160 <20 <9 <9 Sumac 11/15/94 35301350 20101200 <8 <20 <20 12/13/94 8

All other gamma emitters were <LLD.

" Sample not available "By Radiochemical Analysis

TABLE 20 (PAGE 1 OF 6)

RADIOLOGICAL ENVIRONMENTAL MONilT) RING PROGRAM

SUMMARY

T U ELEC1RIC - COMANCHE PEAK STEAM ELECTRIC STA110N JANUARY I 'ID DECEMBER 31.1994 Analysis and lower Limit Number of Medium of Pathway Total Number of All Indicator Imcations Imcation with Highest Mean ControlImcations Nonroutine Sampled ofAnalysis Detection Mean Name Mean (f)(2) Mean (f)(2) Reported (Unit of Measurement) Performed (LLD) (1) Range Distance and Direction Range Range Measurements TLDs (Quarterly) Gamma (170) 0.12(162/162) ENE-5 0.16(4/4) 0.12(8/8) 0 (mR/ day) (0.08-0.18) (O.15-0.18) (O.I1-0.14)

"Ill)s (Annual) Gamma (41) 0.10(39/39) ENE-5 0.14(1/1) 0.11(2/2) 0 (mR/ day) (0.07-0.I4) --

(O. I l-0. I 1)

Air Iodine-131 1-131(421) 70 -(0/368) NA NA -(0/53) 0 (10 3 pel/m3) -- --

Air Particulate Gross (420) 10 23(367/367) S/SSW-1.2 24(52/52) 22(53/53) 0

$ (10 3 pel/m3) Beta (7-60) (8-42) (9-60)

Gamma (32)

Be-7 -

84(28/28) SSW-1.2 93(4/4) 77(4/4) 0 (62-106) (83-105) (76-78)

K-40 - 7.9(2/28; E-3.5 9.3(l/4) 9(l/4) P (6.5-9.0f -- --

Ru-103 -

-(0/28) N/A N/A -(0/4) O Cs-134 -

-(0/28) N/A N/A -(0/4) O Cs-137 -

-(0/20) N/A N/A -(0/4) 0 (1) UD is lower limit of detection as deAned and sequired in USNRC Branch Technical Pbettion on an Aaeptable Radiological Environmental Monitoring Program . Revision 1. November 1979.

(2) (t) is the ratto of posittve results to the number of samples analyzed for the parameter of interest.

means are of posittve results only.

TABLE 20 LPAGE 2 OF 6)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

T U ELECTRIC - COMANCIIE PEAK STEAM ELECTRIC STATION JANUARY I 10 DECEMBER 31.1994 Analysis and lower Limit Number of Medium of Pathway Trdal ilumber of All Indicator locations locauon with Highest Mean Control Location Nonrouune Sampled of Analysts Detection Mean Name Mean (f)(2) Mean (f)(2) Reported .

(Unit of Measurement) Perfornied (LLD) (1) Range Distance and Direcuon Range Range Meast'rements Milk I-131 (18) -

NA NA NA -(0/18) 0 (pCl/I) (BY RADIOCIIEMISTRY) -- --

Gamma (18)

K-4 0 -

NA NA NA 1354(18/18) 0 (1190-1510)

Cs- 137 -

NA NA NA -(0/18) 0 Surface Water Gamma (52)

(pCl/l)

K-40 78(2/39) ESE-1.4 78(2/13) 42(1/33) 0 (68-87) (68-87) --

Trtuum (16) -

6113(8/12) N- 1.5 6450(4/4) -(0/4) 0 (4800-7900) (5200-7900) --

Ground Drinking Gamma (20) -

Water (pCl/l)

K-40 -

53(1/15) N-9.8 78(1/5) 78(1/5) 0 Tritium (19) -

-(0/14) NA NA -(0/5) 0 (1) IlD is Icwer limit of detection as deRned and required in USNRC Branch Technical Pbeltion on an Acceptable Radiological Errvironmental Monitoring Program . Revision 1. November 1979.

(2) (f) is the ratto of positive resuhe to the number of samples analyzed for the parameter of Interest.

means are of poettive results only.

TABLE 20 (PAGE 3 OF 6)

RADIOLOGICAL ENV!RONMENTAL MONITORING PROGRAM

SUMMARY

T U ELECTRIC - COMANCHE PEAK S1EAM ELEC1RIC STKI1ON JANUARY I 'IU DECEMBER 31.1994 Analysis and lower Limit Number of Medium of Pathway Total Number of All Indicator locations location with Highest Mean Control Imcation Nonrouune Sampled ofAnalysis Detection Mean Name Mean (0(2) Mean (0(2) Reported ,

(Unit of Measurement) Performed (LLD) (1) Range Distance and Direction Range Range Measurements Water-Surface Gamma (26)

Drinking (pC1/l)

K-40 . -(0/13) N-9.9 74(1/13) 74(1/13) 0 4

TriUum (8) -

6325(4/4) NNW-0.1 6325(4/4) -(0/4) 0 (5200-7400) (5200-7400) --

Gross Beta (26) -

18(13/13) NNW-0.1 18(13/13) 12(13/13) 0 (9.7-28) (9.7-28) (8.5-21) b I-131 (52) - -(0/26) NA '

NA -(0/26) 0 (BY RADIOCHEMISTRY) -- - - -

Fish Gamma (8)

(pCI/kg/ dry)

K-40 -

3080(3/3) ENE-2.0 3080(3/3) 3042(5/5) 0 (2470-3850) (2470-3850) (2730-3340) ,

t Shoreline Gamma (6)

Sediments 1

(pCl/kg dry) K -

1888(4/4) N-9.9 3335(2/2) 3335(2/2) 0 (1590-2420) (1100-5570) .(1100-5570)

Cs-137 -

49(l/4) NNE- 1.0 49(l/2) -(0/2) O Pb-212 -

129(4/4) N-9.9 172(2/2) 172(2/2) 0 (126-137) (94-249) (94-249)

(1) IlD is lower limit of detection as defined and required in USNRC Branch Technical Peettion on an Ameptable Radiological Environmental Monitoring Program.. Revision 1, November 1979.

(2) 10 to the ratto of positive results to the number of samples analysed for the parameter of intemet, means are of poestive results only.

a TABLE 20 (PAGE 4 OF 6)

RADIOLOGICAL ENVIRONMENTAL MONTIORING PROGRAM

SUMMARY

T U ELEC1RIC - COMANCHE PEAK S1EAM ELECTRIC STK110N JANUARY l "ID DECEMBER 31.1994 Analysis and Imwer Limit Number of Medium of Pathway Total Number of All Indicator Imcations Incation with Highest Mean Contml Imcation Nonroutine Sampled ofAnalysts Detection Mean Name Mean (0(2) ' Mean (0(-2) Reported (Unit of Measurement) Performed (LLD) (1) Range Distance and Direction Range Rarute Measurements Shoreline Gamma (6)

Sediments (pCl/kg dry) BI-214 -

265(4/4) NNE- 1.0 301(2/2) 282(2/2) 0 (215-304) (298-304) (231-333)

Pb-214 -

294(4/4) NNE- 1.0 328(2/2) 28012/2) 0-1246-349) (306-349) (172-388) .

Ra-226 -

501(3/4) N-9.9 704(2/2) 704(2/2) 0 J

(350-680) (700-707) (700-707) m Th-228 -

128(2/4) N-9.9 167(2/2) 167(2/2) 0 A (122-133) (92-242) (92-242) i (1) llD is lower limit of detection as deAned and required in USNRC Branch Technical Peettien on an Ameptable Radiological Environmental Monttoring Program . Revisten 1. November 1979.

(2) (r) is the ratse of poestive muhe to the number of samples analysed for the parameter of intemt.

means are of puestive results only.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ._ _ _ . . _ . - _ . _ . , . _ . _ , = _ . . . . . _ _ . - - _ . . . ~ _ _ - _ - _ . . . - . . _ - . _ _ _ - - . . . . - _ . . - . . . . _ . . _ . , . _ , . . , . . . . . . . . _ _ _ .

TABLE 20 (PAGE 5 OF 6)

RADIOLOGICAL ENVIRONMENTAL MONTIURING PROGRAM

SUMMARY

T U ELECTRIC - COMANCHE PEAK STEAM ELECTRIC STA~nON JANUARY I "IU DECEMBER 31,1994 Analysis and lower Limit Number of Medium of Pathway Total Number of All Indicator locations I.ocation with Highest Mean Control Incation Nonroutine Sampled ofAnalysis Detection Mean Name Mean (0(2) Mean (0(2) Reported (Unit of Measurement) Performed (LLD) (1) Range Distance and Direction Range Range Measurements Broadleaf Gamma (24)

Vegetation (pCl/kg wet) Be-7 -

2775(16/16) SW-1.0 3170(8/8) 1851(8/8) 0 (1080-5490) (1850-5220) (1010-3730)

K-40 -

3866(16/16) SW-13.5 5999(8/8) 5999(8/8) 0 (1640-7950) (1480-8930) (1480-8930) 1-131 -

-(0/16) NA NA -(0/8) 0 Cs-134 .

-(0/16) NA NA -(0/8) O Cs-137 -

-(0/16) NA NA -(0/8) 0 TH-228 -

135(1/16) SW-1.0 135(1/8) -(0/8) 0 (1) IJD is lower limit of detection as deRned and required in USNRC Branch Technical Pbestion on an Ameptable Radiological Environmental Monitoring Program., Revision 1. November 1979.

I (2) 10 is the retto of positive results to the number of semples analysed for the ga'ar of interest, means are of positive results only.

TABLE 20 (PAGE 6 OF 6)

RADIOLOGICAL ENVIRONMEffrAL MONTIDRING PROGRAM

SUMMARY

T U ELECTRIC - COMANCIIE PEAK STEAM ELECTRIC STA'110N JANUARY I TO DECEMBER 31.1994 Analysis aml Lower Limit Number of ,

Medium of Pathway Total Number of All Indicator locations locauon with Highest Mean Control Imcation Nonroutine Sampled ofAnalysis Detection Mean Name Mean (f)(2) Mean (f)(2) Reported (Unit of Measurement) Performed (LLD) (1) Range Distance and Direction Range Range Measurements Food Products Gamma (11)

(pCl/kg wet)

Be-7 -

650(3/11) SW-12.7 948(2/5) -(0/0) 0 (54-1170) (726-1170) --

K-40 -

2848(11/I1) E-3.5 3450(4/4) -(0/0) o (973-5590) (1590-5590) --

1-131 -

-(0/11) NA NA -(0/0) O b Cs-134 -

-(0/1I)

NA NA

-(0/0) 0 Cs-137 -

-(0/11) NA NA -(0/0) 0 (1) 11D is lower limit of detection as defined and requfred in USNRC Branch T +hnical Position on an Acceptable Radfological Environmental Monitoring Program . Revision 1. Novemb=r 1979.

(2) (f) is the ratio of positive results to the number of samples analysed for the parameter of interest.

means are of positive results only.

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i APPENDIX A t EPA CROSS. CHECK PROGRAM l

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EPA INTERIABORATORY COMPARISON PROGRAM 1994  ;

l Collection Teledyne Date Media Nuclide EPA Result (a) Isotopes Result (b) Deviation (c) 01/14/94 Water Sr-89 25.0 5.0 24.00 1.00 -0.35 Sr-90 15.0 5.0 15.67 1.53 0.23 01/28/94 Water Gr-Alpha 15.0 5.0 21.67 0.58 2.31 (d)

Gr-Beta 62.0 i 10.0 72.33 1 3.79 1.79 02/04/94 Water I-131 119.0 12.0 110.33 1 0.00 -1.30 02/11/94 Water U 10.1 3.0 9.73 0.12 -0.21 ,

Ra-226 19.9 ? 3.0 21.00 1.00 0.64 Ma-228 14.7 3.7 15.67 1.53 0.45 03/04/94 Water H-3 4936.0 494.0 4833.33 ! 152.75 -0.36 03/11/94 Water Pu-239 27.6 2.8 25.33 0.58 -1.40 04/19/94 Water Gr-Beta 117.0 18.0 102.67 6.43 -1.38 Sr-89 20.0 i 5.0 19.00 i 1.00 -0.35 Sr-90 14.0 1 5.0 13.00 1 0.00 -0.35 Co-60 20.0 5.0 23.67 i 3.21 1.27 Cs-134 34.0 5.0 34.00 i 1.73 0.00 Cs-137 29.0 1 5.0 34.00 1 2.65 1.73 Gr-Alpha 86.0 1 22.0 78.00 3.00 -0.63 Ra-226 20.0 i 3.0 15.67 i 1.53 -2.50 (e)

Ra-228 20.1 1 5.0 15.33 1 0.58 -1.65 U 25.0 i 3.0 22.33 1 0.58 -1.54 06/10/94 Water Co-60 50.0 1 5.0 43.00 1 2.00 -2.42 (f)

Zn-65 134.0 1 13.0 13.33 0.58 -16.08 (g)

Ru-106 252.0 1 25.0 201.33 i 9.29 -3.51 (h)

Cs-134 40.0 1 5.0 29.33 1 3.79 -3.70 (i)

Cs-137 49.0 1 5.0 49.67 i 1.53 0.23 Ba-133 98.0 1 10.0 85.00 i 3.00 -2.25 Q) 06/17/94 Water U 52.6 i 5.3 54.33 i 1.15 0.57 Ra-226 15.0 1 2.3 15.33 i 0.58 0.25 Ra-228 15.4 i 3.9 16.33 1 1.53 0.41 07/15/94 Water Sr-89 30.0 1 5.0 26.00 1 1.73 -1.39 Sr-90 20.0 1 5.0 19.00 i 0.00 -0.35 07/22/94 Water Gr-Alpha 32.0 1 8.0 25.33 1 2.89 -1.44  :

Gr-Beta 10.0 1 5.0 16.00 1 0.00 2.08 (k) 08/05/94 Water H-3 9951.0 1 995.0 9700.00 i 100.04 -0.44 08/26/94 Air Filter Gr-Alpha 35.0 i 9.0 31.33 1 2.08 -0.71 Gr-Beta 56.0 i 10.0 59.33 1 3.21 0.58 Sr-90 20.0 1 5.0 18.00 i 1.00 -0.69 I Cs-137 15.0 1 5.0 17.00 i 1.73 0.69 l A-2 l

i EPA INTERLABORATORY COMPARISON PROGRAM 1994 Collecuon Teledyne Date Media Nuclide EPA Result (a) Isotopes Result (b) Deviation (c) 09/16/94 Water U 35.0 3.0 38.67 0.58 2.12 (1)

Ra-226 10.0 1.5 10.67 0.58 0.77 Ra-228 10.2 2.6 9.70 0.52 -0.33 09/30/94 Milk Sr-89 25.0 5.0 24.33 2.52 -0.23 Sr-90 15.00 i 5.0 17.67 1.53 0.92 1-131 75.0 8.0 81.67 5.86 1.44 Cs-137 59.0i 5.0 70.33 1 4.62 3.93 (m)

K 1715.0 86.0 1740.00 153.95 0.50 10/07/94 Water 1-131 79.0 8.0 71.00 3.00 -1.73 10/18/94 Water Gr-Beta 142.0 21.0 120.00 0.00 -1.81 Sr-89 25.0 5.0 24.67 2.08 -0.12 Sr-90 15.0 5.0 14.33 1.15 -0.23 Co-60 40.0 5.0 41.00 1.00 0.35 Cs-134 20.0 5.0 21.67 1.53 0.58 Cs-137 39.0 5.0 41.67 2.31 0.92 Gr-Alpha 57.0 14.0 51.33 1.53 -0.70 Ra-226 9.9 1.5 11.33 i O.58 1.66 Ra-228 10.1 2.5 9.33 0.58 -0.53 U 20.0 1 3.0 18.00 i 0.00 -1.15 10/28/94 Water Gr-Alpha 57.0 i 14.0 47.00 3.00 -1.24 Gr-Beta 23.0 1 5.0 25.33 i 1.53 0.81 11/04/94 Water Co-60 59.0 i 5.0 52.00 1 0.00 -2.42 (n)

Zn-65 100.0 i 10.0 81.33 i 7.02 -3.23 (n)

Cs-134 24.0 1 5.0 19.67 1 2.52 -1.50 54.33 i Cs-137 49.0 1 5.0 2.31 1.85 Ba-133 73.0 1 7.0 58.33 i 2.89 -3.63 (n)

Footnotes:

(a) EPA Results-Expected laboratory precision (1 sigma). Units are pC1/ liter for water and milk except K is in mg/ liter. Units are total pCi for air particulate filters.

(b) Teledyne Results - Average i one sigma. Units are pCi/ liter for water and milk except K is in mg/ liter. Units are total pC1 for air particulate filters.

(c) Normalized deviation from the knowm.

(d) There appears to be variation in self-absorption matrix. The EPA confirms that the composition of their tap water from Lake Mead, varies seasonally which can cause variation  ;

in alpha, beta results. No corrective action required at this time since results are within i 3 i sigma controllimits.

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i EPA INTERLABORATORY COMPARISON PROGRAM 1994 Collection Teledyne Brown '

Date Media Nuclide EPA Resultf a) Engineenng Result (b)

(e) No specific or apparent reason found. Data sheets verified and detector efficiencies calibrated. Will exert extra care in making dilutions and using correct sample type on concentration of acids. Will check future samples to see if a pattern develops.

(f) A second aliquot was analyzed, paying particular attention to volume aliquoted. The result.  ;

52 pCi/1, was in good agreement with the EPA. The three original results, each counted on a different detector, showed good precision. The measurement of Co-60 has not been a problem. Future EPA cross-checks will be weighed and results followed to check for a possible trend "out of control".

(g) The average value of three analyses on the " Report of Analysis" was 133 pCi/l which is in good agreement with the EPA. Apparently, incorrect results were entered into the EPA computer. Future data will be printed from the computer screen to check entries.

(h) The EPA has indicated that the Radiation Quality Assurance Program has been experiencing '

problems with the ruthenium-106 analysis. See attached letter from EPA.

(i) The first aliquot, prepared according to EPA dilution instructions was counted on four detectom in the 1 liter Marinelli geometry with Cs-134 results (based on the 796 kev peak) in pCi/l of 32.0. 25.1, 31.7. and 30.8. The 31.7 result was not reported. Had that been reported instead of 25.1, the average would have been 31.5 and the normalized deviation would have been -2.94 instead of -3.70. A second aliquot was prepared and a single r measurement was made with the result of 31,1 pC1/l. An undiluted aliquot was measured in a 150 ml geometry with the result of 33.5 pCi/1. That result is comparable with the Marinelli results. Thus none of : sample preparation (dilution, volume determination, maintaining correct pH, etc.), sample geometry, or detector efficiency seem to be the cause of the low results.

Q) Dere is no apparent reason for the low result, however the average value, 85 pC1/1 is in good agreement to the grand average (86.46). No corrective action planned.

(k) EPA results for gross beta in water were corrected for 20% crosstalk into the beta channel from the Th-230 alpha spike. Recent measurements show that the crosstalk can be much higher (37% Tennelec counter #3 and 54% for gamma products counter #1). The normalized deviation from the grand average was only 0.38. Future results will be corrected with specific crosstalk values determined by counting 3-230 standards. j (1) Possible aliquoting error. The instrument calibration, spike, and blank results all appear normal. No procedural changes are planned. Previous results were well within one normalized deviation. Future measurements will be reviewed to determine if a trend in results above the two sigma warning limit is occurring.

(m) The milk sample was counted four times. The reported Cs-137 values were based on one aliquot of I liter volume and an aliquot of 0.865 liter counted two tiines. It is suspected that the 0.865 liter volume was incorrectly determined. If I liter (the usual volume for counting milk samples) is used in the calculation, then the average of three results equals 63.6 pC1/1 which gives a normalized deviation to the Known of 1.59. The fourth count (a 1 liter aliquot) had a Cs-137 equal to 64.2 pC1/1 which is in good agreement with the average of the other three. Teledyne will set up a log for recording aliquots used for EPA samples and record how the aliquot volume was determined.

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EPA INTERLABORATORY COMPARISON PROGRAM 1994 Collection Teledyne Brown Date Media Nuclide EPA Result (a) Engineering Result (b)

(n) The EPA requires that water samples be diluted before gamma analysis. That imposes a feature not appropriate for the handling of environmental samples. As in the 06/10/94 water sample, it appears that the first aliquot may not have been accurately prepared. A second aliquot was prepared and counted three times with results in pCi/l and normalized deviation of:

Co-60 60.6 40.55 Zn-65 100. 0.0 Cs-134 22.9 -0.38 Cs-137 58.5 +3.29 Ba-133 69.8 -0.79 Four of the five are now in good agreement with the EPA results. The Cs-137 is high, but within the control limits when compared to the grand average deviation of all laboratories of 2.89. The grand average was 51.9 pCi/1. For future samples of this type we will have two technicians each prepare an aliquot and compare the counting results to check for preparation technique differences.

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,2 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

,'*> ser" *.e OFFICE 08' RESE ARCH AND DEVELOPMENT ENVIRONMENTAL MONITORING SYSTEMS LABORATORV LAS VEGAS P O SOE 93478 LAS VEG

• S NEVADA 99193 3478 (702/79a 21Oo FTS 545 2100)

Dear Participant:

The Radiation Quality Assurance Program has been experiencing problems with the Ruthenium-106 currently used in the Performance Evaluation (PE) Studies and in the Standards Distribution Program. If these problems can be satisfactorily resolved, this analyte vill once again be placed into this PE Study. If the problems cannot be resolved, the Ruthenium-106 vill be replaced.

Formal written notice vill be given to all participants that are enrolled in the Gamma in Vater PE Study before the Ruthenium-106 is reintroduced or replaced. At that time, new calibration standards vill be available to all participants in the Gamma in Vater PE Study.

Sincerely, - --

George Dilbeck Chemist Performance Evaluation Program i Radioanalysis Branch (RSA-RADOA) l 1

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1 APPENDIX B SYNOPSIS OF ANALYTICAL PROCEDURES t

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APPENDM B APPLICABLE PROCEDURES NUMBER '1 TILE DATE PAGE PRO-032-1 ' Determination of Gross Alpha 11/30/93 B-3 and/or Gross Beta in Water Samples PRO-042-5 Determinauon of Gamma 04/24/93 B-5 Emitting Radioisotopes PRO-032-10 Determination of Gross Beta 03/01/87 B-7 in Air Particulate Filters PRO-032-11 Determination of Radioiodine 12/15/92 B-8 in Milk and Water Samples PRO-032-12 Determination of Radiolodine 12/15/92 B-9 l in Vegetation Samples PRO-342-17 Environmental'1hermolumi- 06/17/94 B-10 i nescent Dosimetry ULD)

PRO-032-35 Determinauon ofTritium in 10/01/93 B-11 i Water by Uquid Scintillation  !

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l h YNE ISCnDPES PRO-032-1

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DETERMINATION OF GROSS ALPHA AND/OR GROSS BETA IN WATER SAMPLES l l

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1.0 INTRODUCTION

The procedures described in this section are used to measure the overall radioactivity of water samples without identifying the radioactive species present. No chemical separation techniques are involved.

One liter of the sample is evaporated on a hot plate. Different volumes may be used if the sample has a significant salt content or if unusual sensluvity is desired. If requested by the customer, the sample is filtered through No. 54 filter paper before evaporation, removing particles greater than  !

30 microns in size.

After evaporating to a small volume in a beaker, the sample is rinsed into a 2-inch diameter stainless steel planchet which is stamped with a concentric ring pattern to distribute residue evenly. Final evaporation to dryness takes place under heat lamps. Samples which appear to be hygroscopic are dried again under heat lamps just prior to counting.

Residue mass is determined by weighing the planchet before and after mounting the sample. The planchet is counted for alpha and/or beta activity on an automatic proportional counter. Results are calculated using empirical self-absorption curves which allow for the change in effective counting efliciency caused by the residue mass.

2.0 DETECTION CAPABILITY Detection capability depends upon the sample volume actually B-3

b rnYNE IsomPES PRO-032-1  !

1 represented on the planchet, the background and the efBciency of the counting instrument, and upon self-absorption of alpha and beta particles by the mounted sample. Because the radioactive species are not identified, no decay corrections are made and the reported activity refers to the counting time.

De minimum detectable level (MDL) for water samples is nominally 1.6 +

picoeuries per liter for gross beta at the 4.66 sigma level (1.0 pCi/l at the 2.83 sigma level), assuming that I liter of sample is used and that 1/2 gram of sample residue is mounted on the planchet. These figures are based upon a nominal counting time of 50 minutes and upon representative values of ,

counting efficiency and background of 0.2 and 1.2 cpm, respectively. %e MDL for gross alpha activity is nominally 2.3 picocuries per liter at the 4.66 sigma level (1.4 pCi/l at the 2.83 sigma level) also assuming that I liter of sample is used and 1/2 gram of sample residue is mounted on the planchet. R ese figures are based upon a nominal 200 minute counting time and upon a representative efficiency of 0.02 and a background of 0.1 cpm.

The MDL becomes significantly lower as the mount weight decreases because of reduced self-absorption. At a zero mount weight, the 4.66 sigma MDL for gross beta is 0,9 picocuries per liter and the MDL for gross alpha is 0.3 picoeuries per liter. Dese values reflect a beta counting efficiency of 0.38 and an alpha counting efilciency of 0.18.

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h PRO-042-5  ;

ISOIOPES ,

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DETERMINATION OF GAMMA EMITTING RADIOISOTOPES Milk and Water

" A 1.0 liter Marinelli beaker is filled with a representative aliquot of the sample. De sample is then counted for at least 1000 minutes with a shielded Ge(u) detector coupled to a mini-computer-based data acquisition system I which performs pulse height analysis.

Dried Solids Other Than Soils and Sediments A large quantity of the sample is dried at a low temperature, less than 1 100 C. As much as possible (up to the total sample) is loaded into a tared 1- l liter Marinelli and weighed. Tne sample is then counted for at least 1000 l minutes with a shielded Ge(u) rietector coupled to a mini-computer-based data y acquisition system which perfoms pulse height analysis. j i

Fish l As much as possible (up to the total sample) of the edible portion of the sample is loaded into a tared Marinelli and weighed. The sample is then l counted for at least 1000 minutes with a shielded Ge(ll) detector coupled to a i mini-computer-based data acquisition system which performs pulse height j analysis. j I

Soils and Sediments Soils and sediments are dried at a low temperature, less than 100*C. l The' soil or sediment is loaded fully into a tared, standard 300 cc container and -

weighed. De sample is then counted for at least six hours with a shielded Ge(L1) detector coupled to a mini-computer-based data acquisition system which performs pulse height analysis.  !

Charcoal Cartridges (Air Iodine) l Charcoal cartridges are counted up to five at a time, with one positioned l on the face of a Ge(U) detector and up to four on the side of the Ge(U) detector.

Each Ge(u) detector is calibrated for both positions. he detection limit for I- l 131 of each charcoal cartridge can be determined (assuming no positive I-131) uniquely from the volume of air which passed through it. In the event I-131 is observed in the initial counting of a set, each charcoal cartridge is then counted separately, postuoned on the face of the detector.

Air Particulate ne four or five (depending on the calendar month) air particulate filters for a monthly composite for each field station are aligned one in front of another and then counted for at least six hours with a shielded Ge(U) detector B-5

h inYNE isomms PRO-042-5 l coupled to a mini-computer-based data acquisition system which performs pulse height analysis.

A mini-computer software program defines peaks by certain changes in the slope of the spectrum. 'Ihe program also compares the energy of each peak with a library of peaks for isotope identification and then performs the radioactivity calculation using the appropriate fractional gamma ray abundance, half-life, detector efficiency, and net counts in the peak region.

The calculation of results, two sigma error and the lower limit of detection j (LLD) in pCi/ volume or pCi/ mass:

RESULT = (S-B)/(2.22 t E V F DF)  ;

'IWO SIGMA ERROR = 2(S+B)1/2/(2.22 t E V F DF)

LLD = 4.66(B)1/2/(2.22 t E V F DF) l where: S = Area, in counts, of sample peak and background (region of spectrum ofinterest)  ;

B = Background area, in counts, under sample peak,  ;

determined by a linear interpolation of the representative ha%arounds on either side of the Peak t = length of time in minutes the sample was counted 2.22 = dpm/pCi l l

E = detector efficiency for energy ofinterest and geometry of sample V = sample aliquot size (liters, cubic meters, kilograms, or grams) .

l F = fractional gamma abundance (specific for each j emitted gamma)

DF = decay factor from the collection to the counting date B-6 )

h ISCTIOPES PRO-032-10 DETERMINATION OF GROSS BETA IN AIR PARTICULATE FILTERS Air Particulates After a delay of five or more days, allowing for the radon-222 and radon-220 (thoron) daughter products to decay *he filters are counted in a gas-flow proportional counter. An unused air particulate illter, supplied by T U Electric, is counted as the blank.

Calculations of the results, the two sigma error and the lower limit of de-tection (LLD), are performed as follows:

RESULT (pCi/m3) = ((S/T) - (B/t))/(2.22 V E) 1WO SIGMA ERROR (pC1/m3) = 2((S/T2+(B/t 2)}1/2/(2.22 V E)

LLD (pCi/m3) = 4.66(B/t/T)1/2/(2.22 V E) where: S = Gross counts of sample including blank B = Counts of blank E = Counting efIlciency T = Number of minutes sample was counted t = Number of minutes blank was counted V = Sample aliquot size (cubic meters) 2.22 = dpm/pCi B-7

b LEDYNE ISOTOPES PRO-032-11 !

l DETERMINATION OF RADIOIODINE IN MILE AND WATER SAMPLES Two liters of sample are first equilibrated with stable iodide carrier. A batch l treatment with anion exchange resin is used to remove iodine from the sample. l "Ihe lodine is then stripped from the resin with sodium hypochlorite solution, is i reduced with hydroxylamine hydrochloride and is extracted into toluene as free lodine. It is then back-extracted as iodide into sodium bisulfite solution and is precipitated as palladium iodide. The precipitate is weighed for chemical yield and is mounted on a nylon planchet for low level beta counting. 'Ihe chemical yield is corrected by measuring the stable iodide content of the milk or the ,

water with a specific ion electrode.

Calculation of results, two sigma error and the lower limit of detection (LLD) in i pCi/1, are performed as follows: j l

RESULT = (N/At-B)/(2.22 E V Y DF)

TWO SIGMA ERROR = 2((N/At+B)/At)1/2 (2.22 E V Y DF)

LLD = 4.66(B/At)1/2/(2.22 E V Y DF) where: N = total counts from sample (counts)

At = counting time for sample (min)

B = background rate of counter (cpm) 2.22 = dpm/pCi V = volume or weight of sample analyzed Y = chemical yield of the mount or sample counted DF = decay factor from the collection to the counting date E = efficiency of the counter for I-131, corrected for self absorption effects by the formula:

= Es(eXP-0.0085M)/(exp-0.0085Ms)

Es = efficiency of the counter determined from an I-131 standard mount Ms = mass of PdI2 on the standard mount, mg M = mass of PdI2 on the sample mount, mg B-8

D LEDYNE ISOTOPES PRO-032-12 DETERMINATION OF RADIOIODINE IN VEGETATION SAMPLES Broadleaf Vegetation This procedure presents radiochemical methods for determining the 1-131 activity in vegetation samples. Stable iodide carrier is first added to 25-100 grams of the chopped sample. The sample is then leached with sodium hydroxide solution, evaporated to dryness and fused in a muffle furnace. 'Ihe melt is dissolved in water, filtered and treated with sodium hypochlorite. The iodine is then reduced with hydroxylamine hydrochloride and is extracted into toluene. It is then back-extracted as iodide into sodium bisulfite solution and is precipitated as palladium iodide. The precipitate is weighed for chemical yield and is mounted on a nylon planchet for low level beta counting.

Calculation of results, two sigma error and the lower limit of detection (LLD) in pC1/l, are performed as follows:

RESULT = (N/At-B)/(2.22 E V Y DF)

TWO SIGMA ERROR = 2((N/At+B)/At)1/2/(2.22 E V Y DF)

LLD = 4.66(B/At)1/2/(2.22 E V Y DF) where: N = total counts from sample (counts)

At = counting time for sample (min)

B = background rate of counter (cpm) 2.22 = dpm/pCl V = volume or weight of sample analyzed Y = chemical yield of the mount or sample counted DF = decay factor from the collection to the counting date E = cfficiency of the counter for 1-131, corrected for self absorption effects by the formula:

= Es(exp-0.0005M)/(exp-0.0085Ms)

Es = efficiency of the counter determined from an I-131 standard mount Ms = mass of Pdl2 on the standard mount, mg M = mass of PdI2 on the sample mount, mg l

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M DYNEISOTOPES PRO-342-17 ENVIRONMENTAL THERMOLUMINESCENT DOSIMETRY (TID)

Teledyne Isotopes uses a CaSO4:Dy thermoluminescent dosimeter (TLD) which the company manufactures. His material has a high light output, neg-ligible thermally induced signal loss (fading), and negligible self dosing. De energy response curve (as well as all other features) satisfles NRC Reg. Guide 4.13. Transit doses are accounted for by use of separate TLDs.

Following the fleld exposure period the TLDs are placed in a Teledyne Isotopes .

Model 8300. One fourth of the rectangular TLD is heated at a time and the measured light emission (luminescence) is recorded. He TLD is then annealed and exposed to a known Cs-137 dose; each area is then read again. his pro-vides a calibration of each area of each TLD after every field use. The transit controls are read in the same manner.

Calculation of results and the two sigma error in net milliRoetgen (mR) are performed as follows:

RESULT D= (D1 +D2+D3+D4)/4 TWO SIGMA ERROR = 2((D1-D)2+(og.9)2+(D3-D)2+[94 0)2)/3)1/2 where: D1 = the net mR of area 1 of the TLD, and similarly for D2, D3. and D4

= 11 K/R1 - A 11 = the instrument reading of the field dose in area 1 K = the known exposure by the Cs-137 source R1 = the instrument reading due to the Cs-137 dose on area 1 A = average dose in mR. calculated in similar manner as above, of the transit control TLDs B-10

D DYNE ISOTOPES PRO-032-35 DETERMINATION OF TRITIUM IN WATER BY LIQUID SCINTILLATION Ten milliliters of water is added to 10 ml of liquid scintillation solution in a 25 ml vial. The sample is inserted into a Liquid Scintillator and counted for 100 minutes.

Calculations of the results, the two sigma error and the lower limit of detection (LLD), are performed as follows:

RESULT (pC1/l) = (N-B)/(2.22 V E)

TWO SIGMA ERROR (pC1/l) = 2((N + B)/At)1/2/(2.22 V E)

LLD (pCl/l) = 4.66(B/At)1/2/(2.22 V E) where: N = the gross cpm of the sample B = the background of the detector in cpm 2.22 = conversion factor changing dpm to pCi V = volume of the rample in ml E = efficiency of the detector At = counting time for the sample B-11

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APPENDIX C EXCEPTIONS TO THE 1994 REMP C-1

APPENDIX C RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXCEPTIONS FOR SCHEDULED SAMPLING AND ANALYSIS DURING 1994 DATE OF REASONS FOR IDSS/

LOCATION DESCRII7 TION SAMPLING EXCEPTION SSE-4.5 Air Charcoal 04/11-04/19 Motor inoperable SW/WSW-0.95 Air Charcoal 06/21-06/28 Electrical failure E-3.5 Air Charcoal 10/17-10/26 Motor out of service ,

1 SSE-4.5 Air Filter 04/11-04/19 Motor inoperable SW/WSW-0.95 Air Filter 06/21-06/28 Electrical failure S/SSW-1.2 Air Filter 06/28-07/05 Personnel error load-ing filter into holder.

Sample invalid E-3.5 Air Filter 10/17-10/26 Motor out of service SW-12.2 Food Product 01/11/94 Sample not available E-4.2 Food Product 01/11/94 Sample not available SW-12.2 Food Product 02/08/94 Sample not available E-4.2 Food Product 02/08/94 Sample not available SW-12.2 Food Product 03/08/94 Sample not available E-4.2 Food Product 03/08/94 Sample not available SW-12.2 Food Product 04/05/94 Sample not available E-4.2 Food Product 04/05/94 Sample not available SW-12.2 Food Product 05/03/94 Sample not available E-4.2 Food Product 05/03/94 Sample not available E-4.2 Food Product 05/24/94 Sample not available SW-12.7 Food Product 08/23/94 Sample not available C-2

APPENDIX C RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXCEPTIONS FOR SCHEDULED SAMPLING AND ANALYSIS DURING 1994 DATE OF REASONS FOR IDSS/

LOCATION DESCRIFFION SAMPLING EXCEFI1ON SW-12.7 Food Product 09/20/94 Sample not available SW-12.7 Food Product 10/17/94 Sample not available E-3.5 Food Product 10/17/94 Sample not available E-3.5 Food Product 11/15/94 Sample not available E-3.5 Food Product 12/13/94 No garden SW-13.5 Vegetation 01/11/94 Sample not available N- 1.4 5 Vegetation 01/11/94 Sample not available SW-1.0 Vegetation 01/11/94 Sample not available SW-13.5 Vegetation 02/08/94 Sample not available N- 1.45 Vegetation 02/08/94 Sample not available SW-1.0 Vegetation 02/08/94 Sample not available SW-13.5 Vegetation 03/08/94 Sample not available N- 1.45 Vegetation 03/08/94 Sample not available SW- 1.0 Vegetation 03/08/94 Sample not available SW-13.5 Vegetation 04/05/94 Sample not available N- 1.45 Vegetation 04/05/94 Sample not available SW-1.0 Vegetation 04/05/94 Sample not available SW-13.5 Vegetation 12/13/94 Sample not available N-1.45 Vegetation 12/13/94 Sample not available SW- 1.0 Vegetation 12/'3/94 Sample not available C-3

APPENDIX C RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXCEPTIONS FOR SCHEDULED SAMPLING AND ANALYSIS DURING 1994 DATE OF REASONS FOR IDSS/

LOCATION DESCRIPTION SAMPLING EXCEFFION N-9.8 Groundwater 01/19/94 Sample collected on 01/19/94 because re-pairs were being made to water tank.

This sample should have been collected in 4Qtr '93 (10/01-12/31).

WSW-0.1 Groundwater 07/05 Pump not in service WSW-0.1 Groundwater 01/03/95 Pump not in service NE-1.7 TLD 10/04-01/03/95 Missing NE-4.8 TLD 10/04-01/03/95 Missing NE- 1.7 TLD 01/05-01/03/95 Missing NE-4.8 TLD 01/05-01/03/95 Missing C-4

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APPENDIX D I EXCEEDED REPORTING LEVELS I

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APPENDIX D EXCEEDED REPORTING LEVELS -

1994 None of the analytical measurements exceeded any notification level.

D-2 ,

b APPENDIX E LAND USE CENSUS 1

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E-1 l

l VERIFICATION SHEET-LAND USE CENSUS n Date Completed /2, MM Performed By: &s/rM, ,

Ched*h Eg. g o/n/N N

M E

N T

A '

L S  ;

U P

E R

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S Reviewed By: - /O-/7- Ff#

0 Environmental Supervis Receptors with calculated doses increasin5 20% Non e.,

Changes in Program re_ vesta naere d u J w .mlk.!~\rv[ds,u4 R Wn an d }l0 valu er as oc< /99 Y lan) Lis< Gaas

• * '"i 4. bau P ODCM Updated sum 3 M ein /No Date Completed L de_Jos ,o n 4 ao.s. m to O R W\

Approved By: 2 4 w1 Radiation Protection Manager Radiological Environmental Monitoring Program AA

/

C Changes Implemented Ye /No E Date Completed O - b - 7 b' S Implemented by: -

h -

F

@dnager, Civil / Environmental [/SiteFacilities l

ENV-200-1 Page 1 of 1 R-3

October 6,1994 COMANCHE PEAK STEAM ELECTRIC STATION LAND USE CENSUS The Land Use Census identified receptors within a five (5) mile radius of the plant in each of the sixteen (16) meteorological sectors. The Land Use Census was conducted July 20 thru 25,1994 and includes the following items: t

1. Population by Sector and Distance

2. Nearest Resident by Sector and Distance

3. Nearest Garden by Sector and Distance  !

4. Nearest Milk Animal by Sector and Distance

5. A Map with an Accompanying Map Legend Listed below are public use areas within the five (5) mile radius, the approximate attendance for the areas in 1993, and the previous year's increase or decrease:

1. Camp Arrowhead - 3,500 +8%

2. Dinosaur State Park - 312,616 +16%

3. Glen Lake Camp - 14,000 +16%

4. Cedar Brake Girl Scout Camp - 156 -13%

5. Squaw Creek Park - 34,200 -12%

6. Keller's Camp - 6,200 March to November -14% ,

7. Tres Rios Camp - 35,000 to 45,000 No Chrge

8. Oakdale Camp & Fish - 25,000 +3555o Oakdale Park - 120,000

9. +9%

10. Creation Science Museum - 14,000 No Change

11. Texas Amphitheater - Glen Rose - 80,046 <+1%

12. CPSES Visitors Center - 15,342 -21 %

13. Exposition Center - Glen Rose - 4,100 First Year

14. Cherokee Rose Manor Nursing Home - 35 No Change

15. Somervell Training Center - 2365 -23 %

16. Squaw Valley Golf Course - 100,000 First Year b

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. Listed below are public use areas within the ten (10) mile radius, the approximate attendance for the areas in 1993, and the previous year's increase or decrease:

1. Fossil Rim Wildlife Ranch - 80,000+ No Change

2. Granbury Opera House - 77,000 No Change

3. Granbury Queen Riverboat - 20,000 -23%

4. Other Fishing Camps - 12,000+ + 20 %

5. Stevens' Ranch Girl Scout Camp - 2,326 -17%

As required by commitment 22585 and Memorandum NE-24059, pertaining to shipment and storage of liquified chlorine gas within 5 miles of CPSES, the following conditions were found.

1. No new areas of usage of chlorine gas was found within 5 miles of CPSES.

2. The following places were called to inquire about any changes or uses of chlorine gas within their areas. These areas reported no change in uses as reported in letter THP-88-0040, December 20,1988.

Happy Hill Farm City of Stephenville l Oakdale Park City of Glen Rose l Glen Lake Camp -

]

Texas Utilities / Comanche Peak Steam Electric Station has leased property to a local rancher within the Exclusion Area Boundary (EAB) included in the SSW, S, SSE, SE, l and ESE sectors for grazing 74 stocker cattle. Generally, grazing area is bound 6d to 1 the north by the lake, the south by the EAB fence line, the west by a fence line and cattle guard near the TU Ball Field, and on the east by a fence line and cattle guard before crossing onto the dam road. Conservative points in each sector at which the cattle could be closest to the plant are: SSW .95, S .9, SSE .9, SE .9, and ESE-1.3.

A w g.ycqh hes ban naAJ k sng!wnt & mpol rwd.

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. l Population (*) By Sector and Distance 0-1 1-2 2-3 3-4 4-5 Total N - -

"8 2 32 80 114 NNE - -

8 85 19 112 NE - -

52 72 245 369 ENE 2 - -

47 25 22 94 E - -

49 23 158 88' 3 2 239 ESE -

2 8 104 129 243 SE -

6 63 41 55 165 SSE -

33 49 33 2465 2580 S -

33 19 41 107 200 SSW -

3 3 2 30 38 SW -

44 6 38 36 124 WSW 6 121 5 11 3 146 W -

52 8 25 8 93 WNW - - - -

30 101 131 J

NW - -

2 - -

2 i

NNVV - -

6 38 11 55 TOTAL 6 294 327 735 3343 4705 l

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• Based on an average of 2.66 residents per house. This average was obtained  !

from North Central Texas Council of Governments for Hood and Somervell Counties and is derived from an average residents per house of 2.57 and 2.74, respectively.

(1) includes permanent residents at Squaw Creek Park of 2 residents. i (2) Includes average permanent residents at Happy Hill Children's Home of 150 residents.

(3) includes permanent residents at Camp Arrowhead of 5 residents and Keller's Camp of 5 residents.

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. -4 i (4) includes permanent residents at SomervellTraining Center of 2 residents. '

(5) includes average permanent' resident at Cherokee Rose Manor of 35 residents and the _. Glen Rose population . of 2,400 residents as i documented by Mygnonne Thomas, City Secretary, and Terry Gollihugh, )

Wastewater Supervisor.

(6) includes permanent residents at. Dinosaur Valley State Park of 2 ,

residents. '

Nearest Resident by Sector and Distance.

Sector Distance (Miles)

N- 2.2 NNE 2.4 NE 2.3 l ENE 2.4 E 2.4 ESE 2.0 SE 1.9 SSE 1.5 S 1.5 SSW 1.9 SW 1.1 i WSW 1.0 W 1.5 WNW- 3.0 NW 2.7 -

NNW 2.7

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4 5-Nearest Garden by Sector and Distance Sector Distance (Miles)

N 3.4 NNE 2.5 NE 2.7 *

, ENE 2.4 E 3.5 .

ESE 3.5

• SE 2.2

• SSE 1.5 * .

S 1.6*

SSW 4.7

• SW 1.7 WSW 1.3

• W 1.5 WNW 3.5

• NW None NNW 3.5

• l Nearest Milk Animal by Sector and Distance Sector Distance (Miles) i NNW None' l l

SSE None* j E None'

• NE None SW None' *

• Denotes change from previous year.

• Milk animals present but not used for human consumption.

i Map Legend N-1.0 to 2.5 Squaw Creek Park N-3.4 to 3.5 Gardens N-4.0 E-13 i N-4.5 Garden j N-4.5 to 4.6 40 SC, Garden  ;

N-4.5 to 4.6 Businesses N-4.8 H/UC -

N-18.0 . E-50 l

NNE-2.4 Garden  !

NNE-3.3 110 SC . i NNE-3.4 to 3.6 Businesses NNE-3.7 Business with 6 Cabins - Flip's NNE-3.8 . .

50 SC NNE-4.4 to 4.6 Gardens l

NNE-4.9 5 SC, Garden NE-2.7 Gardens NE-2.8 RV Fark-Midway Pines

' NE-3.0 Business with RV Park NE-3.1 Garden NE-3.2 Business NE-3.3 15 SC NE-3.6 10 SC NE-3.9 Garden NE-4.1 -

Garden NE-4.4 to 4.9 Gardens .

NE-4.6 15 SC, E-4 N E-4.9 5 Goats ENE-2.3 4 SC ENE-2.4 to' 2.7 Gardens ENE-2.6 6 SC ENE-4.0 Business - Sa'nd & Gravel ENE-4.1 Garden ENE-4.3 Pecan Orchard ENE-4.6 45 SC ENE-4.9 Garden E-2.3- 1 SC E-3.0 to 3.8 Happy Hill Children's Home - 20 SC,4 DC,16 Goats, 8 Sheep, Garden (E-3.5)

E-3.9 Business - RV Park (Oakdale Camp and Fish)

E-4.0 Keller's Camp - RV Park E-4.4 Truck Garden - Hornick E-4.7 60 SC

. .- . . .. . ~. . . - -

7 E-4.8 Camp Arrowhead - Garden, H/UC  !

E-4.9 3 SC,55 DC (Calves) i ESE-2.0 T.U. Electric - Somervell Training Center' '

ESE-2.2 '100 SC '

ESE-2.5 4 SC  !

ESE 2.9 31 SC '

4 ESE-3.3 to 3.4 Businesses .  :

ESE-3.5 8 SC, 3 Goats.

ESE-3.5 to 3.7 Gardens,25 SC, Businesses,15 SC {

ESE-4.1 to 4.3 Gardens  ;

. ESE-4.3 4 SC '

ESE-4.7 to 4.9 b53 @ ginmIRC#nad/O Gardens ..

l ESE-4.7 Business S -1.2 l

-74 SC 517 gj'ggr.  !

S -1. , 6 Goats SE-2.2 to 2.6 Gardens ,

S E-3.0 Texas Amphitheater - Glen Rose  !

SE-4.3 New Exposition Center, Businesses, Cherokee Rose Manor S E-4.5 Squaw Valley Golf Course S E-4.7 H/UC S E-4.9 Garden SE-5.0 Camp Tres Rios l S SE-1.5-1.8 Gardens SSE-2.1 Gardens SSE-2.2 Daffan Dairy SSE-2.8 H/UC, Garden, 6 SC l'

SSE-4.5 City of Glen Rose, Texas -

SSE-4.7 Oakdale Park l' SSE-4.8 Glen Lake Camp S-1.6 TO 1.9 Gardens -

S-2.0 16 SC i S-2.2 15 SC ~

S-2.3 Garden S-4.0 Businesses l S-4.2 Garden l S-4.6 E-30, 70 SC l S-4.8 43 SC i S-4.9 Businesses - Day Care Center, Garden, i SSW-1.8 60 SC i SSW-3.0 to 4.0 Dinosaur Valley State Park {

SSW-4.5 18 SC l SSW-4.8 Creation Science Museum, Garden SSW-4.9 Business ,

SW-0.7 T.U. Ball Field l SW-1.1 to 1.7 Trailer Park

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- --, . . , , , _ . . . . _ ,, ,_ , , . . . _ , . - - ~

f 3

. 8- ,

i SW-1.8 Garden,15 Milk Goats ,

SW-2.0 to 2.3 37 SC SW-3.2 Garden,2 SC SW-3.4 to 3.5 Gardens,10 SC,12 Goats SW-3.9 Garden SW-4.6 Cedar Brake Girl Scout Camp,100 SC WSW-1.4 Garden '

WSW-1.6 Trailer Park, Business WSW-2.8 Garden W-1.5 Gardens,5 SC ,

W-1.9 50 SC,15 Goats W-3.4 Garder; 1 W-3.8 Gardens, Hill City, Texas WNW-3.1 10 SC WNW-3.5 ,

Garden, Businesses WNW-3.9 10 SC WNW-4.5 75 SC WNW-4.6 Gardens WNW-4.7 to 4.9 Businesses,70 SC, H/UC WNW-4.9 Garden,27 Goats WNW-5.2 E-8 NW- Squaw Creek Ranching Area,200+ SC NW-9.5 E-56 NNW-2.5 to 3.0 Squaw Creek Ranching Area,115 SC, E-4 NNW-3.6 Gardens NNW-3.7 -

14 SC NNW-3.8 to 3.9 Gardens NNW-4.5 Garden NNW-4.9 Gardens,10 SC NNW-7.5 E-4 i

DC Dairy Cattle New Svmbols for 1993 1 SC Stocker Cattle '~

O Occupied Residence E Emus Unoccupied House H/UC House Under Construction Institutions / Recreational Areas (Green)

Recreational Business (Green)

Business (Blue)

A Dairy Truck Farm (Red)

Gardens (Red) i

~ +

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.l, The original map used for data collection and land use census data information is maintained on site ano is not included in this report.  :

This map may be viewed upon request at the Document Control Center.  !

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Page 1 of 2 Evaluation of the 1994 Land Use Census The results of the 1994 Land Use Census were reviewed for impact on the Radiological Environmental Monitoring Program (REMP). The specific areas reviewed, that could be affected by changes found in the land use census, were the sampling requirements for milk, broadleaf vegetation and food products.

, Reviewing the milk sampling requirements from the ODCM Table 3.12-1 reveals that samples are to be obtained from milking animals in three locations within a 5 km distance having the highest potential dose. If none are available, samples a;e acceptable from milking animals in locations 5 to 8 km distance where doses are calculated to be greater than 1 mrem per year. A sample is also required at a control location.

Currently the only location where milk samples are collected is at a control location (SW-13.5).

There are currently no identified milking animals (cow or goat) within the specified distances.

Since not all milk samples are available the broadleaf vegetation sampling specified in ODCM Table 3.12-1 is being performed. Broadleaf sample requirements are such that samples of broadleaf vegetation are to be collected from each of two offsite locations of the highest predicted annual average D/Q if milk sampling is not performed at all required locations.

Currently, broadleaf vegetation samples are collected at two indicator locations (N-1.45 and SW-1.0) and one control location (SW-13.5). These indicator locations are near the site boundary in sectors where broadleaf vegetation is available and D/Q is greatest. Therefore, no changes to the broadleaf sampling program are required.

Food product sample requirements of ODCM Table 3.12-1 requires that one sample of each principal class of food product be collected from any area that is irrigated with water in which liquid plant wastes have been discharged. Of the gardens identified in the land use census, no gardens were located in the area that irrigate with water in which liquid plant wastes are discharged. Currently, food products are sampled from two indicator locations (ENE-9.0 and E-3.5) and one control location (SW-12.7). Changes occurred during the year that required deletion of two old sample locations (E-4.2 and SW-12.2) due to closing of the gardens previously available to sampling. New locations (E-3.5 and SW-12.7) were added to the program to continue sample collection as required per ODCM Table 3.12-1. These new locations were not added based on changes determined from the land use census results. j

page 2 of 2 In summary, the 1994 Land Use Cetsus did not identify any locations that are available for sampling and would yield a calculated dose greater than at the current sampling locations. l In addition to reviewing the sampling location requirements for milk, broadleaf and food products, changes to the controlling receptor locations and pathways and associated atmospheric dispersion parameters given in ODCM, Part II, Table 2.5 were reviewed. This table will require  !

revision since these parameters are used in dose calculations required by Radiological Effluent Control 4.11.2.3. Table 2.5 will be revised to reflect the 1994 Land Use Census data changes for the nearest resident, nearest garden and milk animals. New calculated X/Q and D/Q values for each of these changes will be included in the changes made to Table 2.5. .

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t Evaluation performed by: n/ Date: /8-28-fk i

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