ML13325A869
| ML13325A869 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/01/1982 |
| From: | Pilmer D Southern California Edison Co |
| To: | Engelken R NRC Office of Inspection & Enforcement (IE Region V) |
| Shared Package | |
| ML13325A870 | List: |
| References | |
| NUDOCS 8207090270 | |
| Download: ML13325A869 (39) | |
Text
LtRFS MASTER FIL SUPPLEMENT TO THE ANNUAL OPERATING REPORtE SAN ONOFRE NUCLEAR GENERATING STATION UNIT 1 F
or 1981 RADIOLOGICAL ENVIRONMENTAL MONITORING EVALUATION Southern California Edison Company San Diego Gas and Electric Company Docket No. 50-206 License No. DPR-13 June 30, 1982
Southern California Ed/son Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD.CALIFORNIA 91770 DAVID F. PILMER TELEPHONE MANAGER. NUCLEAR ENGINEERING AND SAFETY (213) 5721989 July 1, 1982 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Sui.te 210 Walnut Creek, California 94596-5368 Attention: Mr. R. H. Engelken, Director Docket No. 50-206 San Onofre Unit 1
Dear Sir:
Enclosed are three copies each of the following environmental monitoring re lated reports:d "MarinezEnvironmental Analysis and Interpretation 1981 Annual Rport "Data Appendix" (to the above report)
"Supplement to the Annual Operating Report for 1981 - Radiological En vironmental Monitoring Evaluation" These reports provide supplementary detailed environmental impact analyses and data and are submitted in accordance with the requirements of San Onofre Nuclear Generating Station Provisional Operating License No. DPR-13, Appendix B, Section 5.6.1.
Please contact me if you have any questions concerning these reports.
Very truly yours, Enc osures cc:
Director of Nuclear Reactor Regulation (17)
L. Miller (NRC Site Inspector)
H. T. Sipe, California Public Utilities Commission California Regional Water Quality Control Board - San Diego.Region J. 0. Ward, California Department of Health Services (radio6gical evaluation report only) e207090270 220701 PDR ADOCK 05000206 RD D
Regon
SUPPLEMENT TO THE ANNUAL OPERATING REPORT SAN ONOFRE NUCLEAR GENERATING STATION UNIT 1 FOR 1981 RADIOLOGICAL ENVIRONMENTAL MONITORING EVALUATION Southern California Edison Company San Diego Gas and Electric Company Docket No. 50-206 License No. DPR-13 June 30, 1982
TABLE OF CONTENTS Page List of Tables........
ii Assessment of Radiological Impact of Plant Operation on the Environment............oo..............
..............1 Direct Radiation...
1 Air Sampling...........
o........
1 Ocean Water.....................
o...................-..
Shoreline Sediment (Beach Sand),.........o..................
2 Ocean Bottom Sediment......................
......... 2 Nonmi gratory Marine Animals........
... o...
2 Local Crops...................o............. o.............-.
3 Soil Sampling..................
.............0..
3 Jack Rabbit...........-..........o....................
3 Kelp.......
oo..
o..... oo 3
Conclusions................................
3 Correlation of Environmental Concentration with Effluent Release....................................
o*..*....
4 Conc usi ns..............
LIST OF FIGURES Page Co-58 Liquid Effluent Release.......................................
6 Co-58 in Marine Biota (SONGS 1)
.................................... 7 Co-58 in Marine Biota (SONGS 2 and 3)
.............................. 8 Co-60 Liquid Effluent Release......................................
9 Co-60 in Marine Biota (SONGS 1)
.................................... 10 Co-60 in Marine Biota (SONGS 2 and 3)............................... 11 Cs-137 Liquid Effluent Release.....................................
12 Cs-137 in Marine Biota (SONGS 1)
................................... 13 Cs-137 in Marine Biota (SONGS 2 and 3)............................. 14
LIST OF TABLES Page Measurement Exceeding Twice Background Level..6.....
0........00 15 Arir g
Fi ter.....................................................
16 Quarterly Composite Air Filters....................................
17 Annual Soil Results................................................
18 Ocean Bottom Sediments. *.
18 Marine Biota.................................
20 Foot Notes...................................
26 Appendix AB........................................................ B-i App nd x
....................................... B -
ASSESSMENT OF RADIOLOGICAL IMPACT OF PLANT OPERATION ON THE ENVIRONMENT Direct Radiation Gamma exposure rates were determined quarterly and annually at 59 locations.
Dosimeter locations are placed at a number of onsite locations, as well as at inner and outer environmental locations.
Each packet contained four dosimeters for a total of 1180 analysis.
The data for 1981 exhibits no significant difference between the offsite inner and outer rings of locations, thus indicating no offsite effects from plant operations. The control station at Huntington Beach averaged 29.9 mR over four quarters while the Visitor Center and the South Southwest Boundary averaged 22.9 and 24.2 mR respectively.
Air Sampling Air is continuously sampled at five locations around the site by passing approximately 12,000 cubic feet per week through a particulate filter and charcoal cartridge. The filter and cartridge are collected weekly and counted for gross beta and iodine 131 respectively. Weekly filters are composited quarterly for gross alpha, gamma spectral and strontium analysis.
No severe increases in gross beta activity occurred as seen in 1977 and 1978 following atmospheric nuclear tests although there was significant fluctuation in the activity. Measured gross beta activity between the inner and outer locations showed no major differences, thus indicating no contribution from the station. No levels of iodine -131 activity were noted in 1981 at either control or indicator stations. Gamma spectral analysis showed the presence of cosmic produced Be-7. Cs-137 on air filter composite samples was not detected at any location except for a slight indication for the second quarterly composite at the NE Boundary and Units 2&3 Switchyard. Measurable levels of gross alpha activity ranged from 0.0009 to 0.0092 pCi/m 3 and there was no significant difference between the inner and outer locations.
In conclusion, there were no significant differences between inner and outer stations for gross beta and gross alpha activity. Also, no iodine or strontium was detected in any sample. Thus, there was no indication of any plant effects.
Ocean Water Ocean water is collected monthly at three station locations directly over the Unit 1,2&3 outfalls and at one control.
Gross beta analysis is performed on the bimonthly samples and tritium analysis was performed on a semiannual composite. All samples analyzed showed no detectable levels of cesium or tritium. No plant effects were detected.
2 Drinking Water Monthly drinking water was sampled at a local reservoir, a local well and at a control station. Gross alpha and beta analysis was performed on both the solids and filtrate. Samples were composited quarterly and the composite solids and filtrate were again analyzed for gross alpha and beta activity.
The composite filtrate was also analyzed for tritium. The action levels for strontium and gamma spectral analysis were not reached on any sample. In general, the control station was consistently 10 to 20 percent lower than both local stations. This difference is attributable to the variations in the natural levels of potassium-40. In 1982, gamma spectral analysis will be performed on a monthly drinking water samples to support this assessment.
Shoreline Sediment (Beach Sand)
Beach sand was collected semiannually at four locations and gamma spectral analysis was performed. The analysis showed the presence of naturally occuring radionuclides in the radium-226 and thorium-232 decay chains. No man made radionuclides were observed with the exception of Cs-137 just south of Unit 1. The activity was very low, 0.02 pCi/g, and was just twice the lower limit of detection. This activity may have been related to the contaminated beach sand incident in 1981.
Ocean Bottom Sediment Ocean bottom sediment was collected semiannually at four indicator and one control station. Gamma spectral analysis was performed on all samples. The presence of small quantities of cobalt-60, cesium-137 and manganese-54 were detected. The highest measured value was less than 1.3 pCi/g dry weight which is 100,000 times less than the reporting level.
Thus, the station impact is considered minimal.
Nonmigratory Marine Animals Two audit fish species, one crustacean and one mollusk were collected quarterly around Unit 1 and Unit 2 outfalls and at a control location.
Gamma spectral, radiochemical, strontium, and bound tritium analysis were performed on each sample. Flesh and bone portions were analyzed separately.
Bound tritium analysis showed wide fluctuation. Positive readings may be attributed to bioluminescence resulting from sample preparation (see twice background tables). In 1982, both bound and aqueous analysis will be performed to support this assessment. Small quantities of man made radio nuclides were found more frequently at indicator stations than at the control, indicating plant related activity. Bottom dwellers such as sea hare showed much higher levels than fish. The highest measured level in sea hare was 1.8 pCi/g wet weight of cobalt-60 and 0.010 pCi/g cesium-137 in fish. These levels are 100,000 to 10 million times lower than reporting levels. Thus the station impact is considered minimal.
3 Local Crops Local crops were collected semiannually at harvest time and analyzed by gamma spectral, tritium and strontium analysis. All measurements were below the minimum detectable levels except for very small levels reported at a control station. This activity can be attributed to fallout and is not a result of plant operations.
Soil Sampling Soil is sampled at five locations annually. Gamma spectral and strontium analysis were performed on all samples. The analysis showed small levels of cesium-137 in 3 of 5 samples and strontium 90 in 1 of 5 samples. The highest value was 0.15 pCi/g cesium. The levels at the inner station were not significantly different from the outer station indicating no plant effect.
Jack Rabbit Three rabbits were collected north and northeast of the site during the year and analyzed. Gamma spectral analysis was performed on the flesh portion, radioiodine analysis was performed on the thyroid and strontium 89 and 90 analyses were performed on the femur. Usual,levels of strontium in bone were ohserved which is attributed to fallout. No iodine or cesium was detected on any sample, thus indicating no plant effect.
Kelp Kelp samples were collected semiannually at three indicators and one control station. Gamma spectral, radiochemical verification and tritium analysis were performed. No significant differences were noted between indicator stations and the control, thus indicating no plant effect.
Conclusions The varibility of the levels of radioactivity in environmental media depends on many factors. These factors include site release rates, meteorology, number and size of nuclear weapons tests, seasonal variability of fallout, soil conditions, local terrain, and variability in the natural background.
All these factors need to be considered in order to explain the levels of radioactivity in the environment.
Environmental data collected throughout the year 1981 have been carefully examined. The assessment of the potential exposure to the population from all plant related activity shows that in all cases the potential exposure is insignificant.
4 CORRELATION OF ENVIRONMENTAL CONCENTRATION WITH EFFLUENT RELEASE Cobalt-58 -- A comparison between the effluent data for Co-58 and its level in marine species indicates no direct correlation between the effluent (Figure 1) and the activity level in marine biota. Species such as Sea Hare caught near SONGS 1 outfall (Figure 2) showed higher-than-twice background level in their flesh.
This was most noticeable in the first quarter (March) where a value of 2.1 nCi/kg dry was obtained while the total quarterly activity of the effluent released was lowest.(30 mCi). In June, the species Co-58 activity (1.0 nCi/kg dry) dropped by a factor of 2 and in the months of September and December, the Co-58 activities were 0.47 and 0.42 respectively; whereas, the effluent Co-58 activity released was highest in June, August, and September (45.6 mCi in June, 47.4 mCi in August, and 47.9 mCi in September). Bay Mussel and Sheep Crab caught at the SONGS II and III outfall area had greater-than-twice background in the month of June (Figure 3).
Cobalt-60 -- A comparison between the effluent Co-60 activity released (Figure 4) and the Cobalt-60 level in marine biota was made.
Sea Hare caught in SONGS I outfall had higher-than-twice background level in the flesh (29.0 nCi/kg dry) in March and 17.5 nCi/kg dry in June) (Figure 5).
The highest effluent Co-60 activity was observed in June (1110 mCi).
The other species from SONGS I outfall area showed higher-than-twice background level.
Spiny Lobster, Black Perch and Sheepshead exceeded the twice background level.
The species caught near SONGS II and III outfall also showed levels higher-than-twice background level (Figure 6).
Spiny Lobster, Bay Mussel and Sheep Crab exceeded the twice-background level.
Bay Mussell
5 had the highest Co-60 activity in June (2.2 nCi/ kg dry) when the effluent Co-60 activity reached its maximum.
Cesium-137 -- The comparison between the Cs-137 activity in the effluent (Figure 7) and Cs-137 in the marine species (Figures 8 and 9) indicated that none of the species contained higher than twice background value of Cs-137 in their tissue. For example, Black Perch Cs-137 level was 0.021 averaged over four quarters and 0.032 for Sheepshead relative to the background level of 0.025 for Black Perch and 0.020 for Sheepshead. The Cs-137 activity of the effluent peaked in March.(89.3 mCi) and in June (189.0 mCi), whereas the marine species of SONGS I and SONGS II and III indicated a low and steady level of Cs-137.
CONCLUSIONS Even though the higher-than-twice background activity levels of radionuclides such as Co-58, Co-60 and Cs-137 may be attributable to the effluent release of these radionuclides to the ocean and deposition to the bottom sediments, no direct correlation has been observed, to date, between the high effluent values of these radionuclides and the marine species.
It should be mentioned that the Co-58, Co-60 and Cs-137 activities were much lower than the technical specifications limit requirements and were as follows:
Percent of Technical Specification Limit for Particulates 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter
< 1.60 x 10-2%
< 6.58 x 10-2%
< 5.06 x 10-2%
< 3.28 x 10-2%
Estimated total error 16%
6 Figure 1 LIQUID EFFLUENT RELERSE CD 0
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Figure 2 QURRTERLY INDICRTION OF RCTIVITT IN MRRINE BIOTR.
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SONGS 2 4 3 o
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KEY SYMBOL C0 SHEEPSHERO (D
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BRY MUSSEL SHEEP CRRB CC
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MEASUREMENTS EXCEEDING TWICE BACKGROUND LEVEL Analysis Date of Comments Medium Performed Locations Collection Indicator(a) Control (Huntington Beach)(b)
Drinking Water (pCi/1)
Filtrate Gross Beta Tri-Cities Reservoir March 17 7.9 Filtrate Gross Beta Tri-Cities Reservoir July 16 7.9 Solids Gross Beta Tri-Cities Reservoir May 2.2 1.0 For Comparison*
Filtrate Gross Beta Tri-Cities Reservoir Jan. - Dec.
12.3(c) 7.9 Solids Gross Beta Tri-Cities Reservoir Jan. - Dec.
1.0(c) 1.0 Filtrate Gross Beta San Clemente Well No. 6 Jan. - Dec.
11.3(c) 7.9 Solids Gross Beta San Clemente Well No. 6 Jan. - Dec.
0.8(c) 1.0 Although single measurements may exceed twice background, a comparison to yearly averages indicates less than twice background.
01
Analysis Date of Comments*
Medium Performed Locations Collection Indicator(d) Control (Huntington Beach)(
Air Filter (pCi/m 3 )
Gross Beta Units 2&3 2/23/81 0.51 0.150 Gross Beta Vistor Center 4/13/81 0.55 0.163 Gross Beta Units 2&3 Switchyard 4/13/81 0.56 0.163 Gross Beta Units 2&3 Switchyard 4/20/81 0.33 0.163 Gross Beta Visitor Center 5/12/81 0.39 0.163 Gross Beta Visitor Center 5/18/81 0.33 0.163 Gross Beta Units 2&3 Switchyard 5/11/81 0.33 0.163 Gross Beta Units 2&3 Switchyard 5/18/81 0.36 0.163 Gross Beta Visitor Center 12/14/81 0.088 0.036 Gross Beta Visitor Center 12/21/81 0.073 0.036
- See Appendix A
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (Huntington Beach)
Quarterly Composite 7Be Visitor Center 1/5/81 - 3/30/81 0.16 0.06 Air Filters (pC1/m3 78e Units 2&3 Switchyard 1/5/82 - 3/30/81 0.16 0.06 7Be Visitor Center 7/6/81 - 9/28/81 0.17 0.078 78e Units 2&3 Switchyard 7/6/81 - 9/28/81 0.23 0.078 141Ce Units 2&3 Switchyard 4/5/81 - 6/29/81 0.05 0.008 141Ce Visitor Center 1/5/81 - 3/30/81 0.037 0.018 1410e Units 2&3 Switchyard 1/5/81.- 3/30/81 0.041 0.018 144Ce Visitor Center 1/5/81 - 3/30/81 0.03 0.014 60Co Visitor Center 7/6/81 - 3/30/81 0.008 N/A(f) 60Co Units 2&3 Switchyard 7/6/81 - 3/30/81 0.006 N/A 95
.r-95Nb Units 2&3 Switchyard 7/6/81 - 3/30/81 0.012(g)
N/A
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (Huntington Beach)
Quarterly Composite 137Cs Units 2&3 Switchyard 4/5/81 - 6/29/81 0.0021 0.001 Air Filters (pCi/m3)
Annual Soil Results 90Sr Old Highway 101 12/31/81 0.05 0.01 (nCi/kg dry) 137Cs Camp San Unofre 12/31/81 0.15 0.01 137Cs Old Highway 101 12/31/81 0.13 0.01 137Cs Visitor Center 12/31/81 0.05 0.01 Control (North)
Ocean Bottom Sediments 54Mn SONGS I - Upcoast 6/10/81 0.05 N/A (nCi/kg dry) 54Mn SONGS I - Downcoast 6/10/81 0.11 N/A 54Mn SONGS I - Upcoast 12/11/81 0.03 N/A 58Co SONGS I - Upcoast 6/10/81 0.06 0.01 58Co SONGS I - Downcoast 6/10/81 0.04 0.01 58Co SONGS I - Dpcoast 6/10/81 0.05 0.008 137Cs SONGS I - Downcoast 6/10/81 0.05 0.008 137Cs SONGS 1I - Dopcoast 6/9/81 0.04 0.008 137Cs SONGS I
- Upcoast 12/11/81 0.07 0.008 137Cs SONGS I - Downcoast 12/11/81 0.05 0.01 137C SOGS I-Dwncast 2/1/81
.050.0
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (North)
Ocean Bottom Sediments 60Co SONGS I - Upcoast 6/10/81 1.11 0.01 (nCi/kg dry) 60Co SONGS I - Downcoast 6/10/81 1.23 0.01 60Co SONGS II - Upcoast 6/9/81 0.08 0.01 60Co SONGS III - Downcoast 6/9/81 0.05 0.01 60Co SONGS I -
Upcoast 12/11/81 1.30 0.02 60Co SONGS 1 - Downcoast 12/11/81 0.128 0.02 60Co SONGS II/III - Upcoast 12/11/81 0.045 0.02 60Co SONGS 11/Ill - Downcoast 12/11/81 0.026 0.02 226Ra SONGS I - Upcoast 6/10/81 0.54 0.18 226Ra SONGS I - Downcoast 6/10/81 0.52 0.18 226Ra SONGS II - Upcoast 6/10/81 0.69 0.18 226Ra SONGS I - Upcoast 12/11/81 0.60 0.11 226Ra SONGS I - Downcoast 12/11/81 0.69 0.11 226Ra SONGS 11/111 - Upcoast 12/11/81 0.43 0.11 226Ra SONGS II/Ill - Downcoast 12/11/81 0.54 0.11 232Th SONGS I - Upcoast 6/10/81 0.56 0.18 232Th SONGS I -
Downcoast 6/10/81 0.52 0.18 232Th SONGS II -
Upcoast 6/10/81 0.69 0.18 232Th SONGS I -
Upcoast 12/11/81 0.62 0.14
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (North)
Ocean Bottom Sediments 232Th SONGS I - Downcoast 12/11/81 0.80 0.14 (nCi/kg dry) 232Th SONGS 11/111 - Upcoast 12/11/81 0.43 0.14 232Th SONGS II/III - Downcoast 12/11/81 0.53
- 0. 14 Control (Newport Beach)
Marine Biota 58Co SONGS I (Spiny Lobster) 3/18/81 0.05 0.02 (nCi/kg dry) 58Co SONGS I (Sea Hare) 3/20/81 2.1 N/A 58Co SONGS II/111 (Bay Mussel) 3/12/81 0.05 N/A 58Co SONGS I (Shell Portion, 6/10/81 0.04 0.01 Spiny Lobster) 58Co SONGS I (Sea Hare) 6/4/81 1.0 0.03 58Co SONGS 11/111 (Sheep Crab) 6/9/81, 6/10/81 0.16 N/A 58Co SONGS II/III (Shell 6/9/81, 6/10/81 0.03 N/A Portion) 58Co SONGS 11/111 (Bay Mussel) 6/10/81 0.14 N/A 58Co SONGS 11/111 (Bone 6/10/81 0.02 N/A Portion) 58Co SONGS I (Spiny Lobster) 9/17/81 0.07 0.03 58Co SONGS I (Sea Hare) 9/24/81 0.47 0.03 58Co SONGS 11/111 (Bay Mussel) 9/17/81 0.07 N/A
Analysis Date,of Comments Medium Performed Locations Collection Indicator Control (Newport Beach)
Marine Biota 58Co SONGS I (Sea Hare) 12/11/81, 12/13/81 0.42 0.02 (nCi/kg dry) 54Mn SONGS I (Spiny Lobster) 3/18/81 0.025 N/A 54Mn SONGS I (Shell Portion) 3/18/81 0.10 N/A 54Mn SONGS I (Sea Hare) 3/20/81 0.11 N/A 54Mn SONGS 11/111 (Bay Mussel) 3/12/81 0.05 N/A 54Mn SONGS I (Black Perch) 6/9, 10, 11/81 0.02 N/A 54Mn SONGS I (Spiny Lobster 6/10/81 0.07 N/A Shell Portion) 54Mn SONGS II/III (Sheep Crab) 6/9/81, 6/10/81 0.67 N/A 54Mn SONGS 11/111 (Shell 6/9/81, 6/10/81 0.11 N/A Portion) 54Mn SONGS I/111 (Bay Mussel) 6/10/81 0.14 N/A 54Mn SONGS II/III (Bay Mussel) 9/17/81 0.02 N/A 60Co SONGS I (Black Perch) 3/18/81 0.09 0.02 60Co SONGS I (Spiny Lobster) 3/18/81 0.66 0.03 60Co SONGS I (Shell Portion) 3/18/81 0.63 0.02 60Co SONGS I (Sea Hare) 3/20/81 29 N/A 60Co SONGS 11/III (Spiny 3/13/81 0.13 0.03 Lobster)
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (Newport Beach)
Marine Biota 60Co SONGS 11/111 (Shell 3/13/81 0.07 0.02 (nCi/kg dry)
Portion) 60Co SONGS 11/111 (Bay Mussel) 3/12/81 0.55 N/A 60Co SONGS I (Sheepshead) 6/9, 10, 11/81 0.16 0.02 60Co SONGS I (black Perch) 6/9, 10, 11/81 0.18 0.03 60Co SONGS I (Spiny Lobster) 6/10/81 0.56 0.04 60Co SONGS I (Shell Portion) 6/10/81 0.58 0.03 60Co SONGS I (Sea Hare) 6/4/81 17.5 0.05 60Co SONGS 11/111 (Sheep Crab) 6/9/81, 6/10/81 3.2 N/A 60Co SONGS II/111 (Shell 6/9/81, 6/10/81 0.77 N/A Portion) 6 0Co SONGS 11/111 (Bay Mussel) 6/10/81 2.2 N/A 60Co SONGS 11/111 (Bone Portion) 6/10/81 0.34 N/A 60Co SONGS I (Spiny Lobster) 9/17/81 0.62 0.04 60Co SONGS I (Shell Portion) 9/17/81 0.24 0.05 60Co SONGS I (Sea Hare) 9/24/81 1.73 0.11
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (Newport Beach)
Marine Biota 60Co SONGS 11/III (Spiny 9/17/81 0.14 0.04 (nCi/kg dry)
Lobster) 60Co SONGS 11/111 (Shell 9/17/81 0.10 0.05 Portion) 6 0Co SONGS 11/111 (Bay Mussel) 9/17/81 0.30 N/A 60Co SONGS 11/111 (Shell 9/17/81 0.02 N/A Portion) 60Co SONGS I (Spiny Lobster) 12/4, 11, 15/81 0.11 0.02 60Co SONGS I (Shell Portion) 12/4, 11, 15/81 0.06 0.01 60Co SONGS I (Sea Hare) 12/11/81, 12/13/81 4.2 0.02 60Co SONGS II/III (Spiny 12/11/81, 12/15/81 0.09 0.02 Lobster) 60Co SONGS 11/111 (Shell 12/11/81, 12/15/81 0.04 0.01 Portion) 6 0Co SONGS 11/111 (Bay Mussel) 12/15/81 0.38 N/A 1l1mAg SONGS I (Spiny Lobster) 3/18/81 0.37 0.03 110mAg SONGS I (Shell Portion) 3/18/81 0.23 0.02 110mAg SONGS I (Sea Hare) 3/20/81 2.7 N/A
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (Newport Beach)
Marine Biota 110mAg SONGS 11/111 (Spiny 3/13/81 0.19 0.03 (nCi/kg dry)
Lobster) 110mAg SONGS I (Spiny Lobster) 6/10/81 0.63 0.02 110mAg SONGS I (Shell Portion) 6/10/81 0.33 0.10 110MAg SONGS I (Sea Hare) 6/4/81 0.9 0.04 110mAg SONGS 11/111 (Sheep Crab) 6/9/81, 6/10/81 0.24 N/A 11mAg SONGS I/11 (Shell 6/9/81, 6/10/81 0.03 N/A Portion)
IOmAg SONGS I (Spiny Lobster) 9/17/81 0.62 0.02 11OMAg SONGS I (Shell Portion) 9/17/81 0.25 0.04 110mAg SONGS 1 (Sea Hare) 9/24/81 1.04 0.03 110mAg SONGS 11/11I (Spiny 9/17/81 0.59 0.02 Lobster) 110mAg SONGS 11/111 (Shell 9/17/81 0.18 0.04 Portion) 110MAg SONGS I (Spiny Lobster) 12/4, 11, 15/81 0.59 0.01 110mAg SONGS I (Shell Portion) 12/4, 11, 15/81 0.24 0.02 110mAg SONGS I (Sea Hare) 12/11/81, 12/13/81 0.22 0.01
Analysis Date of Comments Medium Performed Locations Collection Indicator Control (Newport Beach)
Marine Biota IlOmAg SONGS 11/III (Spiny 12/11/81, 12/15/81 0.35 0.01 (nCi/kg dry)
Lobster) 110mAg SONGS 11/111 (Shell 12/11/81, 12/15/81 0.12 0.02 Portion) 3H(h)
SONGS I (Black Perch) 3/18/81 139 + 10 0 + 10 3H SONGS I (Spiny Lobster) 3/18/81 25 + 10 9 + 4 3H SONGS II/fIl (Sheepshead) 3/12/81 56 + 6 15 + 8 3H SONGS 11/111 (Black Perch) 3/12/81, 3/13, 81 70 + 10 0 + 10 3H SONGS I (Black Perch) 6/9, 10, 11/81 20 + 10 0 + 8 3H SONGS I (Sea Hare) 6/4/81 80 + 10 0 + 6 3H SONGS II (Sheepshead) 6/10/81 190 + 10 0 + 5 3H SONGS II (Black Perch) 6/10/81 100 + 10 0 + 8 3H SONGS II (Sheep Crab) 6/9/81, 6/10/81 160 + 10 N/A 3H SONGS II/III (Spiny 9/17/81 15 + 8 0 + 7 Lobster) 65Zn SONGS 1 (Giant Keyhole) 3/20/81 1.6 N/A 65Zn SONGS 11/111 (Bay Mussel) 6/10/81 0.11 N/A 95Zr-95Nb SONS 11/111 (Bay Mussel) 3/12/81 0.10 N/A 90Sr SONGS I (Spiny Lobster, 12/4, 11, 15/81 0.06 0.04 Shell Portion)
(a) Single measurement (b) Yearly average (c) Yearly average (d) Single measurement (e)
The control values are quarterly averages of measurements within the corresponding time period.
(f) Analyses were done for all radioisotopes in the table.
Those below LLD were not reported under this reporting procedure and their values are assumed to be zero.
In future, all the LLD values will be reported.
(g) Comparison with the average value of 0.056 (0.076 on 1/5/81 and 0.036 on 6/22/81) does not indicate any release pattern.
(h) The values for bound tritium have not been distinguished from those attributable to bioluminescence. Standard deviation included to indicate relative error.
(i) Comparison of the quarterly averages indicate no plant-related release.
APPENDIX A COMPARISON OF INDICATOR AND CONTROL QUARTERLY AVERAGES Analysis Date of Comments Medium Performed Locations Collection Indicator Control (Huntington Beach)( i)
Air Filters (pCi/m 3)
Gross Beta San Clemente 1/5/81 - 3/30/81 0.120 0.150 Gross Beta Camp Pendleton 1/5/81 -
3/30/81 0.122 0.150 Gross Beta Visitor Center 1/5/81 -
3/30/81 0.217 0.150 Gross Beta Units 2&3 Switchyard 1/5/81 -
3/30/81 0.200 0.150 Gross Beta San Clemente 4/6/81 - 6/29/81 0.083 0.163 Gross Beta Camp Pendleton 4/6/81 - 6/30/81 0.314 0.163 Gross Beta Visitor Center 4/6/81 -
6/29/81 0.232 0.163 Gross Beta Units 2&3 Switchyard 4/6/81 - 6/29/81 0.238 0.163 Gross Beta San Clemente 10/5/81 - 12/29/81 0.028 0.036 Gross Beta Camp Pendleton 10/5/81 - 12/29/81 0.023 0.036 Gross Beta Visitor Center 10/5/81 - 12/29/81 0.044 0.036 Gross Beta Units 2&3 Switchyard 10/5/81 -
12/29/81 0.037 0.036
B-1 APPENDIX B Comparison of Operational Data with Preoperational A study of the San Onofre Nuclear Generating Station (SONGS) Unit I was conducted from 1964-1967 in order to provide the preoperational data for San Clemente and Oceanside (control). The gross beta activity in air particulates was measured for all the sites on a weekly basis. Figure 1 indicates the monthly variation in the gross beta activity of the air particulates. As is seen, the two sites show no significant difference in the beta activity. The more-than-normal beta activity and the presence of many peaks are indicative of atmospheric nuclear weapon testing within the corresponding time period.
The increase in beta activity in the early months of 1967 (peak in January) is thought to be the results of Chinese nuclear tests of December 1966.
The decrease in activity levels from 1965 to 1967 might be ascribed to the curtailment of nuclear testing in the atmosphere since 1962. Figure 1 also indicates that the control site beta activity is almost as high as the indicator site. Therefore, it can be concluded that the rise in beta activity
.is not the result of plant construction and is the result of atmospheric weapon testing. It should be mentioned that the presence of such weapon tests make the comparison difficult since the background level is affected.
Figure 2 compares the San Clemente preoperational data obtained between the period of November 1966 to June 1967 with San Clemente operational data (Figure 3) obtained between the period of January 1978 to December 1981.
These data suggest that there is not plant-related activity released to the envi ronment.
B-2 Operational data for three locations, San Clemente, Visitor Center, and Huntington Beach (control) have been presented in Figure 4. The rise in April 1978 in gross beta activity in all the sites may be attributed to the nuclear weapon testing of March 1978. These peaks are 0.185 for San Clemente, 0.230 for Visitor Center, and 0.242 for Huntington Beach (control), respectively.
The larger group of peaks located between November 1980 and June of 1981 may be the results of the Mount Saint Helen volcanic erruption of May 1980. The dispersion of the volcanic plume has raised the environmental levels throughout the country. The peaks in May 1981 (0.40 pCi/m3) for Huntington Beach and in February (0.31 pCi/m3 ) for Visitor Center can be seen in Figure 4. The other minor-peaks are within the statistical deviation of data.
Result This assessment indicates that the variation of radioactivity level in environmental media will be affected by several sources. Meteorology, atmospheric nuclear weapon testing, fallout frequency, terrestrial conditions, coal processing plants, and the occurrence of earthquake and volcanic activities are among the factors whose presence may affect, and lead to the elevation of, the natural background.levels in the environment. All activity noted is either at or below activity attributible to these sources. It is, therefore, concluded that the plant operation has not had any impact on the environment.
B-3 Figure 1I SONGS PPEOPERRTIONRL DRTR(NOV. 196L4
-JUNE 1967)
CD COMPRRISO.N OF RVERRGE MONTHLY GROSS BETR RCTIVITY IN RIR PRRTICULRTES
- IKEY SYMBOL LO.CRT ION CD SRN CLEMENTE C
-OCERNS IDE (CONTROL)
C C
C CC Cfl
.J.
- t.
B-4 Figure 2 SONGS PREOPEBRTIONRPL DRTR[NOV.
1964
-JUNE 1967)
C)
AVERAGE MONTHLY GROSS BETA ACTIVITY IN RIR PARTICULATES KEY SYMBOL LOCATION C)
SAN CLEMENTE CD U
U0~
rr0
~0 N4 CD0
,C: '20
')WLnL jC o) jw w-0 0 0 r
l nm Dc w oL D
DL m0)a T
a_0r
B-5 Figure 3 SONGS OPERRTIONRL DRTP(JRN. 1978
-DEC.
1981) 0 RVERROE MONTHLY GROSS BETR RCTIVITY IN RIR PRRTICULRTES KEY SYMBOL LOCRTION CD SRN CLEMENTE Cn-)
E:0 0
0 0
0 000 0
0 0
0 0
0 0
00 0
0 0
0 m)~
~O J0 0
I)L
~0 -
s) r lC 0(
CD ro.o Co r
B-6 Figure 4 SONGS OPERATIONRL DRTR(JRN. 1978 -
DEC. 1981)
.C COMPRAISON OF RVERRGE MONTHLY *GROSS BETR RCTIVITY IN RIR PRRTICULRTES c-u.
KEY SYMBOL LOCRTION SRN CLEMENTE H.B (CONTROL) 0 VISITOR CNTR LJ cc)
C CC LCC LLTL 4
CD 00000 0
0 0
0 0
0 0
CD 0
0 0
0 00 0 CD0 0--
0 0
0 CD 0 0
0 0
w w
-n a)
-j CD W~
0 U-M\\
m w
w
=.lO~
m J
DD w 0
N w
UJ.
m U
O j
~W 0
-1 CD LD C