ML20117E065
| ML20117E065 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 12/31/1980 |
| From: | Brownrigg D, Szalinski P PACIFIC GAS & ELECTRIC CO. |
| To: | |
| References | |
| 411-81.56, NUDOCS 8505100311 | |
| Download: ML20117E065 (80) | |
Text
___ _ _____-_______
P GedE Pacific Gas and Electric Company i
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[D,275l326 1980 ANNUAL ENVIRONMENTAL l
RADIOLOGICAL REPORT DIABLO CANYON POWER PLANT l
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DEPARTMENT OF ENGINEERING RESEARCH
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Report Issued:
W 141981 Report 411-81.56 4
PACIFIC GAS AND ELECTRIC C099ANY DEPARTMENT OF ENGINEERING RESEARCH 1
1980 ANNUAL ENVIRONMENTAL RADIOLOGICAL REPORT DIABLO CANYON POWER PLANT i
Prepared By:
D. L. Brownrigg P. A. Szalinski I
~
Report 411-81.56 TABLE OF CONTENTS Page
SUMMARY
1 INTRODUCTION.............................
1 SAMPLE COLLECTION AND ANALYSES....................
1 DISCUSSION OF RESULTS 2
EPA ENVIRONMENTAL RADI0 ACTIVITY LABORATORY INTERCOMPARISON STUDIES PROGRAM 6
LAND USE CENSUS 7
3 METHODS OF SAMPLE COLLECTION AND ANALYSIS 8
REFERENCES..............................
21 APPENDICES..............................
22 A.
Environmental Radiological Monitoring Program Summaries B.
Analytical Results of Individual Samples O
i p.a.-
Report 411-81.56 LIST OF TABLES Page Table 11 1 Marine Sampling Program.....................
2 Direct Radiation, Airborne, and Terrestrial Sampling Program 12 3 Distances and Directions to Environmental Monitoring Stations..
13 15 4 Maximum Values for Lower Limits of Detection A-1 A-la ERM Program Sumary - Seawater.................
A-2 A-lb ERM Program Sumary - Surf ace Water...............
A-3 A-2 ERM Program 'Sumary - Airborne A-4 i
A-3 ERM Program Sumary - Fish and Seafood A-5 A-4 ERM Program Sumary - Milk...................
A-6 A-5 ERM Program Sumary - Food Products...............
A-7 j
A-6 ERM Program Summary - Sediment.................
l A-8 I
A-7 ERM Program Sumary - Direct Radiation t
A-8 EPA Environmental Radioactivity Laboratory Intercomparison A-9 Studies Program Results.....................
B-1 B-1 Water Sample Data........................
B-2 0-2 Airborne Data..........................
B-3 Fi sh and Seafood Data...................... B-32 B-4 Milk Data............................ B-35 B-5 Food Product Data........................ B-36 B-6~ Sediment Data.......................... B-37 B-7' Direct Radiation Data...................... B-38 B-8 Indicator Marine Sample Data.................. B-40 B-9. Land Use Census Data...................... B-42 ii
Report 411-81.56 LIST OF FIGURES Figure Page 17 1 Diablo Canyon Off-Site Station Locations 2 Diablo Canyon On-Site Station Locations.............
18 19 3 Santa Barbara County Station Locations 4 Land Use Census.........................
20 1
iii
Report 411-81.56 SIEMARY The environmental radiological monitoring program was continued with minor ch'anges in 1980. The measurements taken during this year generally remained in the range of other preoperational measurements. Results of the Department of Engineering Research's participation in the EPA cross-check program and a land use census of the vicinity of the plant site are also included in this report, INTRODUCTION i
This report contains results of the preoperational environmental radiological monitoring program (ERMP) for the Diablo Canyon Power Plant (DCPP) site compiled for the period January 1, 1980 through December 31, 1980. The monitoring program was conducted in accordance with the Diablo Canyon Environmental Radiological Monitoring Program, as revised May 1, 1979.(l) Results of previous measurements from Diablo Canyon environs are contained in quarterly reports numbered 1-35(2) and the 1979 Annual Environmental Radiological Report.(3)
SAMPLE COLLECTION AND ANALYSES During this period, 60 marine sanples were collected and analyzed as described in the marine sampling program, Table 1.
This program prescribes a quarterly sampling schedule which is utilized to insure that required samples will be obtained at least semiannually, if available. However, black abalone, red abalone, Pismo clams, and comercial salmon were collected only when in season and population density permitted.
2 Report 411-81.56 Direct radiation was measured at monthly intervals at 30 stations and at quarterly intervals at five additional locations (Table 2). The direct radiation exposures were measured using thermoluminescent dosimeters (TLDs). The sampling locations are described by Table 3 and shown in Figures 1-3.
Air was continuously sampled at nine locations, Stations MT1, 2F2, 5F1, 7D1, 8S1, OS2, SM, SV, and LO, as shown in Figures 1-3.
These samples, 289 air particulate filters and 368 iodine cartridges, were 5
collected genera 11y at weekly intervals. Five samples were not collected from Stations. 5F1, 7D1, 8S1, and LO due to mechanical failure in the sampling equipment.
Forty-three terrestrial samples were collected and analyzed as described in Table 2.
These included milk samples from two dairies which were collected at monthly intervals, surface water samples from two Diablo Creek locations which were collected quarterly, and vegetable samples from three farms which were collected quarterly.
In addition,-the results of our participation in the EPA Environmental Radiological Laboratory Intercomparison Program and a summary of a land use census for the plant environs are included in this report.
DISCUSSION OF RESULTS t
The results obtained from the monitoring program are contained in Appendices A and B.
Each appendix is ordered in the following manner:
Water Samples, Table 1; Airborne Radioactivity, Table 2; Fish and Seafood Samples, Table 3; Milk Samp1.s, Table 4; Terrestrial Food Products, e
Table 5; Sediment Samples, Table 6, and Direct Radiation Measurements, Table 7.
The tables in Appendix A present sumaries of the results in
3 Report 411-81.56 accordance with current Nuclear Regulatory Commission (NRC) guidance.(4)
The tables in Appendix B contain the analytical results of the individual samples which were used to compile the summaries in Appendix A.
In addition to the above, Table A-8 details the results of our participation in the EPA Laboratory Intercomparison Program. Table B-8 contains the results from the analyses of indicator marine samples which were collected during the year which are not directly compatible with NRC reporting guidelines.
A short narr' tive smanary will follow describing the results a
contained in the tables of Appendix A.
The maximum values for the Lower Limits of Detection (LLD) that are discussed below are shown in Table 4.
Water Samples One sample of seawater from Diablo Cove and two samples of surface water from Diablo Creek were collected quarterly. Analytical techniques used were capable of achieving the required LLDs with the exception of that for iodine-131. No iodine-131 activity was detected in any water sample and none could be expected due to the lack of a source and its short half-life. However, we are adjusting our sampling and analytical techniques to achieve the required sensitivity.
Airborne Radioactivity Air particulate filters and iodine cartridges were collected at weekly intervals from nine stations. Gross beta activity was measured on all filters. These measurements were consistent with previous values until October. Gross beta values began increasing consistently in October and continued to do so through the end of the year. This is due to fallout
4 Report 411-81.56 from an atmospheric nuclear weapons test conducted by the Peoples Republic of China on October 16, 1980. The airborne sanples collected from Santa Maria, Solvang, and Lompoc were treated as indicator stations. No iodine-131 was detected on any of the charcoal cartridges. The LL0s were met for all these analyses. The particulate filters were composited quarterly by location and analyzed for gama emitters. All of these analyses met required sensitivities. Low concentrations of 103 Ru, 140 Ba, 140 La, 95 Zr, and 54 Mn were detected in the fourth quarter composite of particulate filte'rs due to the atmospheric weapons test mentioned above.
Fish and Seafood Samples Fish, abalone, and clam samples were taken when available each quarter. Cesium-137 activity was measured in fish samples throughout the year, but the activity was well below reporting levels. This activity results from previous atmospheric nuclear weapons tests.
Milk Samples Raw milk samples were collected each month from two dairies except for a Station 5F2 sample in August when milk was not collected due to bacterial contamination. The required analytical sensitivity was met on noted isotopes in all samples. Cesium-137 activity was measured in Samples 80367 and 80539, but the measured activity was below the reporting level for this isotope. This activity results from previous atmospheric nuclear weapons tests.
Food Products Green leafy parts of vegetables grown in the Diablo Canyon area were collected from two farms at quarterly intervals.
In addition, snow peas were collected at quarterly intervals from a farm along the plant access
5 Report 411-81.56 road. The required analytical sensitivities were met for noted isotopes on all samples. Small concentrations of naturally occurring or fallout radioisotopes were measured in these samples, but all were well below the reporting levels.
Sediments Sediment samples were collected from Diablo Cove at quarterly intervals. Although cesium-137 activity was measured in one of these samples, the leve,1 measured was substantially below reporting levels.
This activity results from previous atmospheric nuclear weapons tests.
Direct Radiation Victoreen Model TL-15 glass encapsulated CaF :Mn thermoluminescent 2
dosimeters are used in direct radiation monitoring in the Diablo Canyon environs. There are 35 dosimeter locations. Thirty are changed monthly; five are exchanged quarterly. Station 7S2 is changed quarterly since it is difficult to change in adverse weather, and Station SF3 is changed quarterly to allow comparison with state TLD data at this location. The Santa Barbara County stations at Santa Maria (SM), Solvang (SV), and Lompoc (LO) are collected quarterly by agreement with the Santa Barbara County Health Department. These stations were treated as indicator stations on the sumary table. The measurements for 1980 are in agreement with those for the previous nine years for the stations that were monitored during that time. The results are given in Table B-7.
In addition to the routine dosimetry program, we also participated in the Fifth International Intercomparison of Environmental Dosimeters. This intercomparison was sponsored by the University of Texas, School of Public
'M
6 Report 411-81.56 Health, the U.S. Department of Energy, and the Idaho National Engineering Laboratory.
In the intercomparison, there were three groups of exposed dosimeters and one group of control dosimeters. One of the exposed groups was placed in the environment for three months of exposure to natural background. The other two groups were given a known laboratory exposure; one at the beginning of the exposure period and one at the end in order to study fading characteristics. The dosimeters were sent in Schedule 80 PVC pipe similar to the holders used in the field around Diablo Canyon Power Plant. The results for the dosimeters were returned to the organizers in late January 1981; however, a report from the Intercomparison Comittee has. not been sent to the participants.
EPA ENVIRONMENTAL RADI0 ACTIVITY LABORATORY INTERCOMPARIS0N STUDIES PROGRAM The DER radioanalytical laboratory participated in the Environmental Protection Agency's (EPA) Environmental Radioactivity Laboratory Intercomparison Studies (Cross-check) Program (5) during 1980. We participated in the following determinations (sample mediums-radionuclide combination): diet samples containing gamma emitters; milk samples containing gamma emitters; water samples containing tritium, iodine-131, gamma emitters, and alpha and beta emitters; and air particulate samples containing alpha and beta emitters. Our participation was such that we received at least three samples of each of these determinations. The results of our participation are shown on Table A-8.
As noted on the table, we have not received the known values from the EPA for several of the determinations conducted during 1980. As these known values will be available from the EPA, we do not plan to submit a supplementary report to include these values.
7 Report 411-81.56 LAND USE CENSUS Engineering Research conducted a land use census in the vicinity of Diablo Canyon Power Plant. This census was for 1980. The land use census is required by Nuclear Regulatory Commission, Regulatory Guide 4.8,
" Environmental Technical Specifications for Nuclear Power Plants," and by the Diablo Canyon Power Plant Environmental Technical Specifications.
These both require that a census be conducted at least once per year during the growing season (between June 1 and October 1 for the Diablo Canyon environs).! The census is to identify the nearest milk animal and nearest garden greater than 50 square meters (500 square feet) producing broad-leaf vegetation in each of the 16 meteorological sectors within a distance of 8 kilometers (5 miles) of the plant.
In addition, the Diablo Canyon Environmental Technical Specifications require the identification of the location of the nearest residence in each of the 16 sectors within a distance of five miles.
The methods for conducting the census were: a helicopter flyover, contact with San Luis Obispo County agricultural personnel and contact with individual landowners or tenants. The landowners were identified from county records. The flyover was made during October 1979, as was contact with county agricultural personnel. The landowners and tenants were contacted between July 15 and September 1,1980.
The only activities indicated by county agricultural personnel were cattle grazing in much of the area surrounding the plant site and truck farming in the southeast sector along the coastal plateau.
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8 Report 411-81.56 During the flyover, no gardens greater than 500 square feet (except for the above mentioned farming) or milk animals were observed. Contact with the' landowners or tenants confirmed this observation. These contacts were made either personally or by phone.
The land use in the vicinty of Diablo Canyon has not changed significantly from that identified in Section 2.0 of the Diablo Canyon Final Safety Analysis Report. Figure 4 and Table B-9 summarize the land use census results. No milk animals were identified within the first five miles in any sector. The only garden or farm greater than 500 square feet is in the southeast sector along the site access road. This farm is on the coastal plateau; it starts at approximately two miles from the plant and extends to 4.5 miles from the plant. The nearest residence is 1-3/4 miles north-northwest of the plant. A total of eight permanent residences were identified within five miles of the plant.
METHODS OF SAMPLE COLLECTION AND ANALYSIS Most samples are collected by DER personnel. A quarterly collection schedule is followed for marine, surface water, and vegetable samples to insure that a sample is taken semiannually. California Polytechnic College Foundation personnel under the direction of Dr. F. Clogston collect terrestrial and occasionally some marine samples. PGandE Coast Valley Division personnel service the air sampling station at Station 2F2.
The San Luis Obispo (SLO) County Health Department personnel service Station 5F3 dosimetry. Santa Barbara County personnel service the air sampling stations at SM, SV, and LO.
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9 Report 411-81.56 Marine and terrestrial samples are processed for analysis at DER.
Except for seawater, samples are freeze-dried or evaporated prior to determining gross beta activity. Beta analysis is performed on low background, thin window, gas-flow proportional counters; the limit of detectability is typically 0.5 pCi/gn of a standard containing K-40.
Activities are reported per gram dry sample or per gram original sample, as appropriate.
The tritium (H-3) activity in surface water is determined by analyzing a distil. led aliquot of the sample with a liquid scintillation spectrometer. The limit of detection for this analysis is typically 0.2 pCi/ml of water.
Radiciodine analyses are performed on milk samples within eight days of collection. Following addition of stable iodine to the raw milk to permit determination of chemical recovery, iodine is separated from the milk by an anion ion exchange resin.
Iodine is stripped from the resin and after purification is precipitated as cuprous iodide for measurement by beta-gamma coincidence counting. The. detection limit attained by this method is typically 0.2 pCi/ liter for I-131.
A gamma isotopic analysis, using a Ge(Li) or intrinsic germanium detector and multichannel pulse height analyzer, is performed on all marine and terrestrial samples, on iodine cartridges, and on quarterly composite of air filters. The limit of detectability attained in the gamma scan is typically less than 1 pCi/gm of a freeze-dried sample containing a single radionuclide.
Air samplers are located at Stations MT1, 2F2, SF1, 7DI, 851, 052, SM, SV, and LO (Figures 1 through 3). The constant flow samplers have a flow rate in the range of 40 1pm. An HV-70 filter and a Scott TEDA
10 Report 411-81.56 impregnated charcoal cartridge for the collection of radiciodines arc used. The filters and cartridges are concurrently collected on a weekly basis and mailed to DER. The filters are counted to determine gross beta activity at least 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after collection to allow for naturally occurring short-lived radionuclides to decay, and the filters are combined quarterly for an analysis of gama emitters. The cartridges are gamma scanned within one half-life (eight days) to determine I-131 concentration.
The limit of detection of this analysis is typically 0.02 pCi per cubic meter of air sampled.
Gamma dosimetry is performed at stations shown in Figures 1 through 3.
tit all stations except 7S2, SM, SV, LO, and SF3, a packet containing three Victoreen (Model TL-15) TLDs is exposed on a monthly basis and changed by PGandE personnel. At Stations 752, SM, SV, LO, and 5F3, a packet of three TLDs are exposed quarterly and changed by PGandE personnel and the SLO County Health Department personnel, respectively. All TLDs are mailed to DER for readout after their exposure.
The + term in the tables of Appendix B is the two-sigma error; i.e.,
the 95 percent confidence level.
i
11 Report 411-81.56 TABLE 1 Marine Sampling Program I
Sampling Type of Material Collection j
Sample Item Location Analysis Analyzed Frequency Seawater Diablo Cove Gamma isotopic, Aliquot Quarterly tritium i
Red algae, foliose Diablo Cove Gamma isotopic Complete Quarterly (Iridaeasp.)
sample Bull kelp Diablo Cove Gamma isotopic Frond and Quarterly (Nereocystis stipe leutkeana) 1 Goose barnacles Diablo Cove Gamma isotopic Meat and Quarterly l
(Pollicipes shell polymer us)
Mussels Diablo Cove Gamma isotopic Complete Quarterly (Mytiluz
- sample, if available californianus) less shell Black abalone Diablo Cove Gamma isotopic Edible muscle Quarterly (Haliotis and viscera cracherodii)
Striped sea perch Diablo Cove Gamma isotopic Edible muscle Quarterly l
(Embiotoca if available lateralis)
Pismo clams Pismo Beach Gamma isotopic Complete Quarterly (Tivelastultorum)
- sample, 1ess shell
}
Red abalone Diablo Cove Gamma isotopic Edible muscle Quarterly (Haliotis and viscera if r_ufescen's) available
~~
Blua Rockfish Diablo Cove Gamma isotopic Edible muscle Quarterly (Sebastes mystinus)
Commercial Gamma isotopic Edible muscle Quarterlyf b
landing in if collected
.Morro Bayl/
locally Salmon Commercial Gamma isotopic Edible muscle Quarterlyb_/
landing in if collected Morro Bay 1/
locally a/ Commercial samples, b/ Sampled when in season.
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wa 12 Report 411-81.56 TABLE 2 Direct Radiation, Airborne, and Terrestrial Sampling Program Collection Sample Item Sampling Location Type of Analysis Frequency N
a Y
Direct Radiation _/ 35 stations Gamma dose Monthly Airborne Particulates I 9 stations Gross beta Weekly d
Gamma isotopic Quarterly i
composite Iodine 9 stations Gamma for I-131 Weekly Surface water 2 stations'/
Gross betab, Y, Quarterly gamma isotopic l
l tritium l
Y Quarterly Grains and Farm in San Luis Obispo Gamma isotopic vegetables area; farm in Guadalupe area; farm along plant access roadY Y
l Milk Farm in San Luis Obispo Gamma isotopic Monthly area farm in Guadalupe; RadioiodineY Monthly area-l a/Thermoluminescent dosimeters (TLD), three at each station.
{/SeeFigures1,2,and3forlocations.
c/Except Stations 7S2, 5F3, SM, SV, and LO which are quarterly, if/ Filters changed weekly or as required by dust loading; analyzed at least 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after filter change.
e/Diablo Creek above 500 kv switchyard; Diablo Creek at Diablo Cove, f/ Analyses performed on evaporate.
{/Analysesperformedoncompletesample.
w-13 Report 411-81.56 TABLE 3 Distances and Directions to Environmental Monitoring Stations Old Radial Radial Sta-Current Direction Distance tion Station (TrueHeading) from Plant Code Code
- Station Name (Degrees)
(Miles) 3 0S1 Exclusion Fence-Northwest Corner 320 0.1 0S2 North Gate 320 0.5 1S1 Wastewater Pond 330 0.4 2S1 Back Road-300 m North of Plant 0
0.2 351 Road NW of 230 kv Switchyard 23 0.4 4S1 Back Road Between Switchyards 43 0.5 4
SS1 400 kv Switchyard 58 0.4 20 SS2 Diablo Creek Wier 65 0.6 8
SS3 Microwave Tower Road 70 0.7 5
6S1 Microwave Tower 94 0.5 7S1 Overlook Road 112 0.3 28 7S2 Diablo Peak 103 1.1 6
851 Target Range 125 0.5 7
852 Southwest Site Boundary 128 1.1 951 South Cove 167 0.4 i
MT1 Meteorological Tower 185 0.2 19 DCM Diablo Cove 270 0.2 21 DCC Diablo Creek at Diablo Cove 270 0.1 2
WN1 Northwest Guard Shack 290 0.2 13 1A1 Crowbar Canyon 327 1.6 18 081 Point Buchon 325 3.6 1C1 Montana de Oro Campground 336 4.7 SC1 Junction Prefumo/See Canyon Roads 64 4.7 16 7C1 Pecho Creek Ruins 118 4.1 10 2D1 Sunnyside School 10 6.9 3D1 Clark Valley 24 6.2 11 4D1 Los Osos School 36 7.6 6D1 Junction See/ Davis Canyon Roads 89 7.5 27 7D1 Avila Gate 120 6.6 14 7D2 Avila Beach 110 7.6 26 2F1 Morro Bay 0
10.9 9
2F2 Morro Bay Power Plant 358 11.2 12 SF1 SLO Zone 1 Substation 68 11.2 25 5F2 Cal Poly Farm 60 12.6 29 5F3 SLO County Health Department 70 12.7 17 7F1 Shell Beach 110 10.8 22 7F2 Pismo Beach 115 12.6 23 7G1 Arroyo Grande 115 16.8 15 7G2 Oceano Substation 118 17.3 30 7G3 Woodland Dairy 122 17.9 SM Santa Maria 127 29.7 LO Lompoc 154 44.6 SV Solvang 144 56.1
- New station.
7 p.
e 14 Report 411-81.56 TABLE 3 - contd.
- Station Code (XYZ):
X - First number (0-9) represents the radial sector in which the station is located:
0 - Northwest 5 - East-northeast 1 - North-northwest 6 - East 2 - North 7 - East-southeast 3 - North-northeast 8 - Southeast 4 - Northeast 9 - South-southeast Y - Letter (S, A-H) represents the distance from the plant:
i S - On-site A 2 miles from plant (but off-site)
B 4 miles from plant C 6 miles from plant D 8 miles from plant E 10 miles from plant F 15 miles from plant G 20 miles from plant H - Greater than 20 miles from plant Z - Second number represents the station number within the zone.
i
The Santa Barbara County stations at Lompoc, Santa Maria, and Solvang and i
the on-site locations at the meteorological tower, Diablo Cove, and Diablo Creek at Diablo Cove do not follow the coding system listed above.
j 1
15 R: port 411-81.56 TABLE 4 Maximum Values for the Lower Limits of Detection (LLD)a Airborne Food Particulate Fish Products Sediment or Gas Water (pCi/kg, Milk (pCi/kg, (pCi/kg, 3
Analysis (pCi/1)
(pCi/m )
wet)
(pCi/1) wet) dry)
Gross beta 4 1x10-2 b
3 2000 (1000)D H
54Mn 15 130 59Fe 30 t,
260 58,60 Co 15 130 65Zn 30 260 95Zr-Nb 15
-2 c
131
)b 7x10 1
60 7
Cs 15(10)b,18 lx10-2 130 15 80 150 13,137 140Ba 60 60 140 15 15 g
Table Notation a-The LLD is the smallest concentration of radioactive material in a sample that will be detected with 95 percent probability with 5 percent probability of falsely concluding that a blank observation represents a "real" signal.
For a particular measurement system (which may include radiochemical separation):
s 4.66 b LLD = E x V x 2.22 x Y x exp l-ht) where LLD is the lower limit of detection as defined above (as pCi per unit mass or volume) sb is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (as counts per minute)
16 Report 411-81.56
[
TABLE 4 - contd.
E is the counting efficiency (as counts per transformation)
. V is the sample size (in units of mass or volume) 2.22 is the number of transformations per minute per picocurie Y is the fractional radiochemical yield (when applicable)
A is the radioactive decay constant for the particular radionuclide t is the elapsed time between sample collection (or end of the sample collection period) and time of counting i
The value of sb used in the calculation of the LLD for a detection system shall be based on the actual observed variance of the background counting rate or of the counting rate of the blank samples (as appropriate) rather than on an unverified theoretically predicted variance.
In calculating the LLD for a radionuclide determined by gamma-ray spectrometry, the background shall include the typical contributions of other radionuclides normally present in the samples (e.g., potassium-40 in milk samples).
Analyses shall be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally background fluctuations, unavoidably small sample sizes, the presence of interferring nuclides, or other uncontrollable circumstances may render these LLDs unachievable.
In such cases, the contributing factors will be identified and described elsewhere in the report.
b-LLD for drinking water.
c-LLD for leafy vegetables.
17 Report 411-81.56
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20 Report 411-81.56 N PASO ROSLES
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& RESDEMCES
21 Report 411-81.56 i
REFERENCES 1.
Letter to Joseph Ward, Department of Health Services from R. F. Cayot, concerning modifications of environmental radiological program for the Diablo Canyon site, dated June 14, 1979.
2.
Environmental Radiation Study in the Vicinity of Diablo Canyon, California, Reports 1-35.
3.
1979 Annual Environmental Radiological Report, Diablo Canyon Power Plant.
4.
NRC Branch Technical Position on Environmental Radiation Monitoring, Revision 1 (November 1979).
5.
EPA-600/4-78.-032 (June 1978), Environmental Radioactivity Laboratory Intercomparison Studies Program 1978-1979.
Report 411-81.56 t
APPENDIX A Environmental Radiological Monitoring Program Summaries
r TABLE A-la Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 Location of Facility San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (county, State)
Medium or Type and Lower Limit All Indicator Location with Highest Control Pathway Sampled Total Number of Locations Annual Mean Locations Number of (Unit of of Analyses Detection (a)
Mean(1)(b)
Name, Distance Mean(l)(b)
Mean(1)(b)
Reportable Measurement)
Performed (LLD)
Range (b) and Direction Range (b)
Range (b)
Occurrences Seawater Tritium (2) 315 None detected Sta.DCM, 0.2 mi, None detected 0
(pCi/ liter) 270 0
Gamma Isotopic (4) 54Mn 3.1 None detected None detected 59Fe 7.8 None detected None detected 58Co 2.9 None detected None detected i
60Co 4.4 None detected None detected 65Zn 6.7 None detected None detected 95Zr 5.7 None detected None detected 95Nb 5.1 None detected None detected 131I 5.3(c)
None detected None detected 134Cs 2.9 None detected None detected 137Cs 3.5 5.6 (1/4) 5.6 (1/4) 140Ba 16 None detected None detected j
140La 10 None detected None detected A
=
(a) Calculated Lower Limit of Detection (LLD). The value reported is the highest LLD calculated for any of the y
m stsnmarized samples, (b)Mean and range based upon detectable measurements only.
Fraction of detectable measurements at specified locations
,m is indicated in parentheses (1).
(c)LLD is higher than Table 4 values due to length of time between sampling and counting.
r TABLE A-lb Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 Location of Facility San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (County, State)
Medium or Type and Lower Limit All Indicator Location with Highest Control Pathway Sampled Total Number of Locations Annual Mean Locations Number of (Unit. of of Analyses Detection (a)
Mean(1)(b)
Name, Distance Mean(l)(b)
Mean(1)(b)
Reportable Measurement)
Performed (LLD)
Range (b) and Direction
.-Range (b)
Range (b)
Occurrences Surface Water Gross beta 0.37 3.17(8/8)
Sta.DCC, 0.1 mi, 3.56(4/4) 0 (pCi/ liter)
(8) 1.77-4.60 270 2.53-4.60 Tritium (8) 371 None detected None detected 0
0 Gamma Isotopic (8) 54Mn 3.9 None detected None detected 59Fe 7.4 None detected None detected k
58Co 3.8 None detected None detected 60Co 3.7 None detected None detected 652n 9.0 None detected None detected 95Zr 8.7 None detected None detected 95Nb 4.3 None detected None detected 1311 5.3(c)
None detected None detected 134Cs 4.2 None detected None detected 137Cs 4.0 None detected None detected 140Ba 15 None detected None detected 3
140La 8.3 None detected None detected
}
(a) Calculated Lower Limit of Detection (LLD). The value reported is the highest LLD calculated for any of the b
sumarized samples.
ui (b)Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (1).
(c)LLD is higher than Table 4 values due to length of time between sampling and counting.
r i
TABLE A-2 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 Location of Facility San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (County, State)
Medium or Type and Lower Limit All Indicator Location with Highest Control Pathway Sampled Total Number of Locations Annual Mean(c)
Locations Number of (Unit of of Analyses Detection (a)
Mean(1)(b)
Name, Distance Mean(l)(b)
Mean(1)(b)
Reportable Measurement)
Performed (LLD)
Range (b) and Direction Range (b)
Range (b)
Occurrences Sta.2F2 0
Airborne 1311(368) 0.07 None detected (pCi/m3)
None detected Gross Beta 0.005 0.087(318/318) Sta.8S1, 0.5 mi, 0.085(43/43) 0.077(50/50)
(368) 0.009-0.588 125 0.012-0.490 0.012-0.467 0
None detected 0
134Cs 0.01 None detected 137Cs 0.01 None detected None detected 0
(a) Calculated Lower Limit of Detection (LLD). The value reported is the highest LLD calculated for any of the summarized samples.
8 (b)Mean and range based upon detectable measurements only.
Fraction of detectable measurements at specified locations is indicated in parentheses (1).
3 (c)SM, SV, and L0 stations were not monitored during the entire year. The calculated mean for each of these stations 7
is unusually high due to the nuclear weapon test in October; therefore, they were not considered when determining the location with the highest annual mean gross beta count.
g
TABLE A-3 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 Location of Facility _ San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (County, State)
Medium or Type and Lower Limit All Indicator Location with Highest Control Pathway Sampled Total Number of Locations Annual Mean Locations Number of (Unit of of Analyses Detection (a)
Mean(1)(b)
Name, Distance Mean(l)(b)
Mean(1)(b)
Reportable i
Measurement)
Performed (LLD)
Range (b) and Direction Range (b)
Range (b)
Occurrences j
Fish and Gama Sta.DCM, 0.2 mi, Sta.2F1, O
Stafood Isotopic (30) 270' 10.9 mi, O' l
(pCi/kg wet) 54Mn 74 None detected None detected 59Fe 156 None detected None detected SSCo 75 None detected None detected 60Co 71 None detected None detected 65Zn
. 147 None detected None detected 134Cs 76 None detected None detected 137Cs 76 12.5(4/21) 12.5(4/21) 24.0(7/9) 10-14 10-14 7.3-33
.g
@n f:
ao
[
(a) Calculated Lower Linit of Detection (LLD). The value reported is the highest LLD calculated for any of the summarized samples.
m (b)Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (1).
r TABLE A-4 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 Location of Facility San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (County, State)
Medium or Type and Lower Limit All Indicator Location with Highest Control Pathway Sampled Total Number of Locations Annual Mean Locations Number of (Unit of of Analyses Detection (a)
Mean(1)(b)
Name, Distance
..Mean(1)(b)
Mean(1)(b)
Reportable Measurement)
Performed (LLD)
Range (b) and Direction Range (b)
Range (b)
Occurrences Milk 131I(23) 0.20 None detected None detected 0
(pCi/ liter)
Gamma Sta.7G3, Sta.5F2, O
Isotopic (23) 17.9 mi, 122 12.6 mi, 60 134Cs 4.8 1.1 (1/12) 1.1 (1/12)
None detected 137Cs 4.9 2.5 (1/12) 2.5 (1/12) 2.4 (1/11) 140Ba 19 None detected None detected 140La 14 None detected None detected 5'
?
(a) Calculated Lower Limit of Detection (LLD). The value reported is the highest LLD calculated for any of the summarized samples.
d (b)Mean and range based upon detectable measurements only.
Fractionofdetectablemeasurementsatspecifiedlocationsg is indicated in parentheses (1).
m
I W
TABLE A-5 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 Location of Facility San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (County, State)
Medium or Type and Lower Limit All Indicator Location with Highest Control-Pathway Sampled Total Number of Locations Annual Mean Locations Number of (Unit of of Analyses Detection (a)
Mean(1)(b)
Name, Distance Mean(1)(b)
Mean(l)(b)
Reportable Measurement)
Performed (LLD)
Range (b) and Direction Range (b)
Range (b)
Occurrences Food Products Gama Sta.5F2, 0
(pCi/kg wet)
Isotopic (12) 12.6 mi, 60 None detected 131I 53 None detected None detected 134Cs 6.0 None detected None detected cn 137Cs 6.2 None detected af E
A (a) Calculated Lower Limit of Detection (LLD). The value reported is the highest LLD calculated for any of the summarized samples.
b (b)Mean and range based upon detectable measurements only.
Fraction of detectable measurements at specified locations is indicated in parentheses (1).
g
l P
TABLE A-6 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 I
Location of Facility San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (County, State) p Medium or Type and Lower Limit All Indicator Location with Highest Control f
Pathway Sampled Total Number of Locations Annual Mean Locations Number of (Unit of of Analyses Detection (a)
Mean(1)(b)
Name, Distance Mean(1)(b)
Mean(1)(b)
Reportable
_ LLD)
Range (b) and Direction Range (b)
Range (b)
Occurrences
(
Measurement)
Performed 0
Sediment Gama.
Sta.DCM, 0.2 mi, (pCi/kg dry)
Isotopic (4) 270 134Cs 26 None detected 137Cs 25 46 (1/4) 46 (1/4) 2O E'
E A
(a) Calculated Lower Limit of Detection (LLD). The value reported is the highest LLD calculated for any of the ad sumarized samples, (b)Mean and range based upnn detectable measurements only.
Fraction of detectable measurements at specified locations lo is indicated in parentheses (1).
.[
m
J 1
TABLE A-7 Environmental Radiological Monitoring Program Summary 1
Name of Facility Diablo Canyon Power Plant Docket No.
50-275 and 50-323 l
Location of Facility San Luis Obispo, California Reporting Period 1/1/80-12/31/80 (County, State)
Medium or Type and Lower Limit All Indicator Location with Highest Control Pathway Sampled Total Number of Locations Annual Mean Locations Number of (Unit of of Analyses Detection (a)
Mean(1)(b)
Name, Distance Mean(l)(b)
Mean(l)(b)
Reportable Measurement)
Performed (LLD)
Range (b) and Direction Range (b)
Range (b)
Occurrences l
Dir@ct TLD Packets 1
76.8(306/306) Sta.3S1, 0.4 mi, 8.71(8/8)
Sta.2F2 and 0
Radiation (mR)
(330) mR/mo 51.0-104.5 23 6.4-11.2 4D1 nR/yr mR/mo 58.7(24/24) l 55.2-62.3 mR/yr 2
lo if E
A (a) Calculated Lower Limit of Detection (LLD). The value reported is the highest LLD calculated for any of the S
7 summarized samples.
(b)Mean and range based upon detectable measurements only.
Fraction of detectable measurements at specified locations 3
is indicated in parentheses (1).
g
A-9 Report 411-81.56 TABLE A-8 Diablo Canyon Power Plant 1980 Annual Report EPA Environmental Radiological Laboratory Intercomparison Studies Program 1
Results EPA DER Known Value Average Value
+ Expected
+ Experimental Sample Type Radionuclide Date Precision ( ) -Precision ( )
Diet I-131 7/11/80 54+5 53+3 11/10/80 34[5 28[1 Cs-137 7/11/80 2715 3011 11/10/80 1215 1411 K
7/11/80 26601130 3043151 11/10/80 31001150 2860130 Milk I-131 1/25/80 0.01+0.1
<10 4/25/80 3375 36+13 7/25/80 0-
<5-10/31/80 1815 2413 Cs-137 1/25/80 40+5 38+3 4/25/80 28T5 2571 7/25/80 3575 43T1 10/31/80 21[5 27[1 K
1/25/80 1600+80 1523+6 4/25/80 1190760 923T53 7/25/80 1550T78 1867T40 10/31/80 1620[81 1930[30 Air Particulates Alpha 3/28/80 1515 2011 6/27/80 24+6 29+2 9/26/80 2476 27.370.6 12/19/80
~
24.7[0.6 Beta 3/28/80 4115 4511 6/27/80 28+5 35+2 9/26/80 1075 18.3T0.6 12/19/80 27[0 1/ nly radionuclides contained in the sample are reported on this table.
O DER reported values for all radionuclides added to these samples by the EPA and did not report values for any radionuclides not added.
2/ DER values recorded are the average of the three results submitted plus or minus the experimental sigma (1 sigma).
- Known values not yet received from the EPA.
.m
A-10 Report 411-81.56 TABLE A contd.
Results EPA DER Known Value Average Value
+ Expected
+ Experimental Sample Type Radionuclide Date Precision ( )
Precision ( )
Water H-3 2/8/80 1750+341 1550+72 4/11/80 3400T360 3491793 8/15/80 12107329 1347T101 10/10/80 32007360 3113T38 12/26/80 2240[350 2223[70 I-131 4/4/80 4415 44+2 Cr-51 2/1/80 101+5 10l+9 6/6/80 13T5 15T2 10/3/80 8615 92[6 Co-60 2/1/80 11+5 11+1 6/6/80 575 6T1 10/3/80 16[5 17[0 Zn-65 2/1/80 25+5 27+2 6/6/80 2375 27T1 10/3/80 25[5 28[2 Ru-106 2/1/80 51+5 46+8 6/6/80 37T5 3771 10/3/80 46[5 47[3 Cs-134 2/1/80 1015 9 11 6/6/80 11+5 10+1 10/3/80 20[5
<18-Cs-137 2/1/80 30+5 31+2 l
6/6/80 1775 1971 10/3/80 12f5 15[1 Alphi 3/21/80 13+5 14+2 7/18/80 36 9 3114 1
Beta 3/21/80 22+5 17+1 l
7/18/80 38[5 41[3
l l
Report 411-81.56 l
APPENDIX B 1
Analytical Results of Individual Samples i
l
\\
1 TABLE B-1 Diablo Canyon Power Plant 1980 Annual Report Water Samples, Collected 1980 (pCi/1)
Sample Date Gross (Station No.) Collected Bets 3H 54Mn 59Fe 58Co 60Co 65Zn 95Zr 95Nb 131I 134Cs 137Cs 140Ba 140La Others 80067 (DCM) 2/19/80 NA
<315
<1.1
<2.3
<1.1
<1.1
<2.4
<2.4
<1.1
<1.5
<1.1
<1.2
<3.3
<2.4 Seawater 80068 (552) 2/19/80 4.17+ <315
<3.9
<7.1
<3.8
<3.5
<9.0
<8.7
<4.3
<5.3
<4.2
<4.0
<11
<7.6 Surface Water 0.34-80069 (DCC) 2/19/80 4.60+- <316
<3.4
<6.9
<3.7
<3.6
<8.0
<8.2
<3.9
<4.9
<3.2
<3.9
<12
<8.3 Surface Water 0.37 80262 (DCM) 5/13/80 NA NA
<1.8
<3.6
<1.8
<2.0
<4.1
<4.5
<2.0
<2.8
<2.0
<2.1
<5.8
<10.0 7Be=
l 9.818.2 Seawater 80263 (5S2) 5/13/80 1.771 <368
<1.7
<3.2
<1.8
<1.9
<3.3
<3.8
<1.9
<1.9
<2.0
<1.8
<4.8
<3.6 Surface Water 0.17 80264 (DCC) 5/13/80 4.271
<3'
<3.3
<7.4
<2.9
<3.1
<8.7
<8.2
<3.6
<4.2
<3.5
<3.9
<9.3
<7.4
[
Surface Water 0.37 80479 (DCM) 8/4/80 NA
<171
<3.1
<7.8
<2.9
<3.4
<6.7
<5.7
<5.1
<5.3
<2.9
<3.5
<15.9
<5.2 Seawater 80481 (552) 8/4/80 2.491 <173
<1.0
<4.0
<1.2
<1.1
<2.2
<2.9
<1.9
<2.5
<1.0
<1.8
<6.0
<1.8 Surface Water 0.21 80482 (DCC) 8/4/80 2.841 <171
<2.9
<4.6
<2.2
<1.9
<4.0
<3.5
<2.2
<4.4
<2.0
<2.4
<15.4
<4.3 Surface Water 0.24 80712 (DCM) 11/3/80 NA NA
<2.2
<4.3
<2.2
<4.4
<4.7
<4.7
<1.9
<3.1
<2.3 5.61 <9.3
<2.9
- [
2.7 g
Seawater 80713 (DCC)
=11/3/80 2.53i <226
<0.8
<1.6
<1.6
<1.2
<1.8
<1.5
<0.9
<1.1
<0.9
<1.0
<3.5
<1.1 3
Surface Water 0.28 y
3 80714 (SS2) 11/3/80 2.65t <226
<1.7
<5.2
<3.2
<3.7
<3.1
<3.1
<1.7
<2.1
<1.6
<1.7
<6.6
<1.9
,m Surface Water 0.27
_m, B-2 Report 411-81.56 TABLE B-2 Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station MT1 (pC1/m**3), First Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80005 485 1/8/80 1/11/80 0.03510.003 1/
80019 556 1/17/80 1/22/80 0.01110.001 80026 297 1/22/80 1/28/80 0.03210.003 80037 384 1/28/80 2/4/80 0.05710.004 1
80042 474 2/5/80 2/8/80 0.04410.004 80055 380 2/11/80 2/15/80 0.04010.003 80070 537 2/20/80 2/25/80 0.02510.002 80080 323 2/25/80 2/29/80 0.01810.002 80111 470 3/4/80 3/10/80 0.01910.002 80123 385 3/10/80 3/17/80 0.01710.002 80144 426 3/17/80 3/24/80 0.02810.002 80169 431 3/24/80 3/27/80 0.02410.002 80182 481 4/1/80 4/7/80 0.02510.002 Quarterly Composite 12/31/79-4/1/80 4/8/80 7Be = 0.16610.014 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
o B-3 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station MT1 (pCi/m**3), Second Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80192 394 4/7/80 4/11/80 0.04010.003 1/
80220 595 4/17/80 4/22/80 0.04910.003 80232 255 4/21/80 4/29/80 0.04010.003 80240 433 4/28/80 5/9/80 0.03010.002 80252 397 5/5/80 5/14/80 0.03410.003 80265 474 5/13/80 5/16/80 0.01610.001 80295 441 5/20/80 5/28/80 0.02710.002 80307 428 5/27/80 6/2/80 0.01510.001 80335 358 6/2/80 6/9/80 0.02310.002 80345 438 6/9/80 6/16/80 0.01210.001 80357 549 6/18/80 6/25/80 0.01710.001 80379 310 6/23/80 6/26/80 0.01810.002 80395 427 6/30/80 7/8/80 0.02510.002 Quarterly Composite 4/1/80-6/30/80 7/21/80 7Be = 0.07710.003 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
d
B-4 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station MT1 (pCi/m**3), Third Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80406 427 7/7/80 7/10/80 0.01710.001 1/
80420 428 7/14/80 7/21/80 0.01710.002 80438 424 7/21/80 7/31/80 0.01610.001 80456 432 7/28/80 8/7/80 0.01810.001 80483 411 8/4/80 8/11/80 0.02210.002 80498 434 8/11/80 8/18/80 0.02410.002 80543 552 8/20/80 8/27/80 0.01910.001 80551 309 8/25/80 9/2/80 0.02710.002 80579 490 9/2/80 9/8/80 0.01910.002 80588 366 9/8/80 9/12/80 0.01710.001 80611 493 9/16/80 9/21/80 0.02110.002
~
80627 370 9/22/80 9/29/80 0.02710.002 80640 537 10/1/80 10/7/80 0.03910.003 I
Quarterly Composite 6/30/80-10/1/80 10/20/80 7Be = 0.05910.001 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
B-5 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station MT1 (pCi/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta
)
Number (m**3)
Date Date Activity 131I 80655 316 10/6/80 10/20/80 0.04710.004 1/
l 80665 430 10/13/80 10/21/80 0.03910.003 80682 480 10/21/80 10/27/80 0.05510.004 80697 373 10/27/80 10/31/80 0.08110.006 80716 478 11/4/80 11/10/80 0.20510.010 80727 368 11/10/80 11/13/80 0.17610.012 80746 430 11/17/80 11/20/80 0.21510.014 80789 444 11/24/80 12/2/80 0.25210.016 80820 479 12/2/80 12/12/80 0.31310.020 80831 366 12/8/80 12/15/80 0.20510.014 80851 422 12/15/80 2/2/81 0.26910.012 80874 435 12/22/80 1/5/81 0.35210.023 80885 483 12/30/80 1/6/81 0.42310.027 Quarterly Composite 10/1/80-12/30/80 1/9/81 7Be = 0.14410.001 134,137Cs = <0.01 103Ru = 0.024+0.0002 140Ba = 0.01470.002 95Zr = 0.018+6.0002 140La = 0.01T o.0007 i
' l/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
h
_____-.w_._..
- - - - ~
r q p--
B-6 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Rhdioactivity Station 2F2 (pCi/m**3), First Quarter l
l Sample Volume Collection Counting Gross Beta l
Number (m**3)
Date Date Activity 1311 1
80008 428 1/9/80 1/11/80 0.04010.003 1/
80016 428 1/16/80 1/22/80 0.01210.001 1
80031 428 1/23/80 1/28/80 0.033+0.002 80046 855 2/6/80 2/11/80 0.04910.003 80060 440 2/13/80 2/19/80 0.04410.002 80071 t
415 2/20/80 2/25/80 0.01610.002 80100
,428 2/27/80 3/3/80 0.02010.001 l
80122 856 3/12/80 3/17/80 0.01610.001 80149 428 3/19/80 3/24/80 0.02710.002 80174 428 3/26/80 3/31/80 0.02110.002 80180 428 4/2/80 4/7/80 0.02110.002 Quarterly Composite 1/2/80-4/2/80 4/18/80 7Be = 0.13110.009 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
I
B-7 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 2F2 (pC1/m**3), Second Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 i
80200 428 4/9/80 4/15/80 0.04110.003 1/
80219 429 4/16/80 4/22/80 0.04510.003 80237 427 4/23/80 5/1/80 0.02610.002 80245 426 4/30/80 5/13/80 0.03210.002 80257 427 5/7/80 5/16/80 0.02910.002 80275 428 5/14/80 5/19/80 0.01810.002 80296 428 5/21/80 5/28/80 0.02610.002 80304 428 5/28/80 6/2/80 0.01710.001 80340 428 6/4/80 6/9/80 0.02210.002 80350 435 6/11/80 6/16/80 0.01210.001 80356 421 6/18/80 6/25/80 0.01810.001 80384 428 6/25/80 6/30/80 0.01910.002 80396 428 7/2/80 7/8/80 0.02310.002 Quarterly Composite 4/2/80-7/2/80 7/21/80 7Be = 0.06610.007 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
~ 0.07 pCi/m**3.
i t
\\
l t
mn B-8 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 2F2 (pC1/m**3), Third Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80411 428 7/9/80 7/18/80 0.01810.001 1/
80427 427 7/16/80 7/24/80 0.01210.001 80444 430 7/23/80 8/4/80 0.01810.001 80457 426 7/30/80 8/7/80 0.01510.001 80489 428 8/6/80 8/14/80 0.02110.002 80533 430 8/13/80 8/19/80 0.02110.002 80542 426 8/20/80 8/23/80 0.01410.001 80560 429 8/27/80 9/4/80 0.02510.002 80584 427 9/3/80 9/10/80 0.01610.001 80601 427 9/10/80 9/16/80 0.01510.001 80616 428 9/17/80 9/21/80 0.03010.002 80631 428 9/24/80 9/29/80 0.02110.002 80645 428 10/1/80 10/7/80 0.03610.003 Quarterly Composite 7/2/80-10/1/80 10/21/80 7Be = 0.06110.001 134,137Cs = <0.01
-1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
B-9 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 2F2 (pCi/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80660 428 10/8/80 10/20/80 0.04710.003 1/
80672 428 10/15/80 10/21/80 0.03210.002 80683 428 10/22/80 10/27/80 0.06910.005 80702 428 10/29/80 11/4/80 0.08910.006 80723 493 11/6/80 11/12/80 0.19010.012 80739 364 11/12/80 11/19/80 0.11010.007 80775 428 11/19/80 12/1/80 0.24110.016 80808 428 11/26/80 12/3/80 0.24710.016 80826 439 12/3/80 12/13/80 0.44010.028 80840 418 12/10/80 12/16/80 0.26410.017 80858 430 12/17/80 12/22/80 0.40010.026 80873 426 12/24/80 12/30/80 0.37610.024 80899 856 1/7/81 1/15/81 0.46710.030 Quarterly Composite 10/1/80-1/7/81 1/16/81 7Be = 0.12910.002 134,137Cs = <0.01 103Ru = 0.024+0.0003 140Ba = 0.01170.003 106Ru = 0.00270.0007 95Zr = 0.024+6.0003 140La = 0.00l[10.0009 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
I
. _ = _
B-10 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station SF1 (pCi/m**3), First Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80006 479 1/8/80 1/11/80 0.04010.003 1/
80020 556 1/17/80 1/22/80 0.01110.001 80027 297 1/22/80 1/28/80 0.02610.003 80038 387 1/28/80 2/4/80 0.03810.003 80043 470 2/5/80 2/8/80 0.04910.004 80056 368 2/11/80 2/15/80 0.03410.003 80072 532 2/20/80 2/25/80 0.02110.002 80081 327 2/25/80 2/29/80 0.01310.001 80112 464 3/4/80 3/10/80 0.01810.002 80124 389 3/10/80 3/18/80 0.01410.001 80145 467 3/18/80 3/24/80 0.02710.002 80170 389 3/24/80 3/27/80 0.01810.002 80183 469 4/1/80 4/7/80 0.02310.002 Quarterly Composite 12/31/79-4/1/80 4/9/80 7Be = 0.12110.012 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
,e B-11 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 5F1 (pCi/m**3), Second Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80193 385 4/7/80 4/11/80 0.03010.003 1/
80221 590 4/17/80 4/22/80 0.04210.003 80233 263 4/21/80 4/29/80 0.03010.003 80241 432 4/28/80 5/9/80 0.02610.002 80253 427 5/5/80 5/14/80 0.02310.002 80266 467 5/13/80 5/16/80 0.01510.002 80297 446 5/20/80 5/28/80 0.02010.002 80308 434 5/27/80 6/2/80 0.01810.001 80336 356 6/2/80 6/11/80 0.02310.002 80346 434 6/9/80 6/16/80 0.01210.001 80358 549 6/18/80 6/25/80 0.01710.001 80380 308 6/23/80 6/26/80 0.02010.002 2/
6/30/80 Quarterly Composite 4/1/80-6/23/80 7/22/80 7Be = 0.06610.003 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
2/No sample collected due to mechanical failure.
i m
my
. =
B-12 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 5F1 (pCi/m**3), Third Quarter Sample Volume Collection Counting Gross 8 eta Number (m**3)
Date Date Activity 1311 80407 422 7/7/80 7/10/80 0.01210.001 1/
80421 428 7/14/80 7/21/80 0.01710.001 80439 424 7/21/80 7/31/80 0.01510.001 80458 431 7/28/80 8/7/80 0.01810.001 80484 418 8/4/80 8/14/80 0.02410.002 80499 429 8/11/80 8/18/80 0.02010.002 80544 548 8/20/80 8/27/80 0.01910.001 80552 309 8/25/80 9/2/80 0.02810.002 80580 495 9/2/80 9/8/80 0.02110.002 80589 361 9/8/80 9/12/80 0.02010.002 80612 493 9/16/80 9/21/80 0.02410.002 80625 369 9/22/80 9/29/80 0.02610.002 80639 548 10/1/80 10/7/80 0.04310.005 Quarterly Composite 6/30/80-10/1/80 10/21/80 7Be = 0.06010.005 134,137Cs = <0.01
-1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
1
B-13 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station SF1 (pCi/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 1/
10/6/80 806562]
80666 427 10/13/80 10/21/80 0.04610.003 80684 529 10/22/80 10/27/80 0.06410.004 80698 324 10/27/80 10/31/80 0.03710.003 80718 480 11/4/80 11/10/80 0.20210.013 80728 361 11/10/80 11/13/80 0.22710.015 80747 429 11/17/80 11/20/80 0.20310.013 80790 449 11/24/80 12/3/80 0.25110.016 80821 469 12/2/80 12/12/809 0.20710.019 80832 383 12/8/80 12/15/80 0.10310.007 80852 428 12/15/80 12/19/80 0.41010.026 80875 418 12/22/80 1/5/81 0.41110.026 80886 491 12/30/80 1/6/81 0.46310.029 Quarterly Composite 10/1/80-12/30/80 1/12/81 7Be = 0.13310.003 134,137Cs = <0.01 103Ru = 0.025+0.0006 95Zr = 0.018+6.0006 54Mn = 0.0007+0.0001 140La = 0.00710.002 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
2]Nosamplecollectedduetomechanicalfailure.
B-14 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 701 (pCi/m**3), First Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80007 486 1/8/80 1/11/80 0.03310.003 1/
80021 556 1/17/80 1/22/80 0.01010.001 80028 297 1/22/80 1/28/80 0.02210.002 80039 385 1/28/80 2/4/80 0.04410.004 80044 472 2/5/80 2/11/80 0.03110.003 80057 382 2/11/80 2/15/80 0.03210.003 80073 529 2/20/80 2/25/80 0.01710.002 80082 322 2/25/80 3/3/80 0.01410.001 80113 468 3/4/80 3/10/80 0.01710.001 80125 387 3/10/80 3/18/80 0.01410.001 80146 427 3/17/80 3/24/80 0.01910.002 80171 428 3/24/80 3/27/80 0.01910.001 80184 469 4/1/80 4/7/80 0.02210.002 Quarterly Composite 12/31/79-4/1/80 4/11/80 7Be = 0.11910.011 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
yp B-15 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 7D1 (pCi/m**3), Second Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80194 381 4/7/80 4/14/80 0.02710.003 1/
80222 592 4/17/80 4/22/80 0.04010.003 80234 258 4/21/80 4/29/80 0.02910.003 80242 433 '
4/28/80 5/11/80 0.02310.002 80254 427 5/5/80 5/16/80 0.02810.002 5/13/80 2/
80298 443 5/20/80 5/28/80 0.02910.002 80309 434 5/27/80 6/2/80 0.01710.002 80337 353 6/2/80 6/11/80 0.02410.002 80347 436 6/9/80 6/16/80 0.01510.001 80359 549 6/18/80 6/25/80 0.02210.002 80381 309 6/23/80 6/26/80 0.02210.002 80397 427 6/30/80 7/8/80 0.02710.002 Quarterly Composite 4/1/80-6/30/80 7/22/80 7Be = 0.07110.007 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
2_/ Sample not collected due to mechanical failure.
mm f
B-16 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 7D1 (pCi/m**3), Third Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80408 427 7/7/80 7/18/80 0.02310.002 1/
80422 428 7/14/89 7/21/80 0.01710.001 80440 424 7/21/80 7/31/80 0.01910.002 80459 431 7/28/80 8/7/80 0.01610.001 80485 415 8/4/80 8/14/80 0.02910.002 80500 429 8/11/80 8/19/80 0.02410.002 80545 551 8/20/80 8/27/80 0.01810.001 80553 309 8/25/80 9/2/80 0.02910.002 80581 493 9/2/80 9/8/80 0.02110.002 80590 363 9/8/80 9/12/80 0.01910.002 80613 492 9/16/80 9/21/80 0.02510.002 80628 370 9/22/80 9/29/80 0.02510.002 80638 510 10/1/80 10/6/80 0.04710.003 Quarterly Composite 6/30/80-10/1/80 10/21/80 7Be = 0.05810.004 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be 0.07 pCi/m**3.
)
~
B-17 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 7D1 (pC1/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80657 323 10/6/80 10/20/80 0.04710.004 1/
80667 426 10/13/80 10/20/80 0.03210.003 80685 531 10/22/80 10/27/80 0.06210.004 80699 321 10/27/80 11/4/80 0.08010.006 80720 477 11/4/80 11/10/80 0.19210.012 80729 369 11/10/80 11/13/80 0.17710.012 80748 425 11/17/80 11/20/80 0.21110.014 80791 447 11/24/80 12/3/80 0.25410.016 80822 475 12/2/80 12/13/80 0.25310.017 80833 369 12/8/80 12/15/80 0.17310.016 80855 439 12/15/80 12/19/80 0.45010.029 80876 418 12/22/80 12/30/80 0.32810.021 80887 478 12/30/80 1/6/81 0.41610.027 Quarterly Composite 10/1/80-12/30/80 1/12/81 7Be = 0.12410.003 134,137Cs = <0.01 103Ru = 0.021+0.0004 6
95Zr = 0.0151 0005 1/Unless specified, Iodine-131 concentrations were determined to be
~
<0.07 pC1/m**3.
j
._ g,
- -- = =
B-18 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 851(pCi/m**3),FirstQuarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80074 99 2/20/80 2/25/80 0.044+0.005 1/
80126 441 3/10/80 3/18/80 0.01410.001 80147 427 3/17/80 3/24/80 0.027+0.002 80172 429 3/24/80 3/27/80 0.019+0.002 80185 482 4/1/80 4/7/80 0.02510.002 Quarterly Composite 2/ 2/12/80-4/1/80 4/14/80 7Be = 0.130+0.017 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
2/ Airborne radioactivity measurements for this station were begun on 2/12/80.
h
_g B-19 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 851 (pC1/m**3), Second Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80195 372 4/7/80 4/14/80 0.03110.003 1/
80223 594 4/17/80 4/23/80 0.04510.004 80235 257 4/21/80 4/29/80 0.03510.003 80243 433 4/28/80 5/11/80 0.02710.002 80255 426 5/5/80 5/16/80 0.03210.002 80268 473 5/13/80 5/22/80 0.01610.001 80299 442 5/20/80 5/28/80 0.02410.002 80310 428 5/27/80 6/2/80 0.02010.002 80338 359 6/2/80 6/11/80 0.02110.002 80348 437 6/9/80 6/16/80 0.01210.001 80360 549 6/18/80 6/26/80 0.01610.001 80382 309 6/23/80 6/26/80 0.02310.002 80398 427 6/30/80 7/8/80 0.02110.002 Quarterly Composite 4/1/80-6/30/80 7/25/80 7Be = 0.07510.003 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
b 1
~,
B-20 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 851 (pC1/m**3), Third Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80409 427 7/7/80 7/18/80 0.02110.002 1/
80423 428 7/14/80 7/24/80 0.01610.001 80441 424 7/21/80 7/31/80 0.01510.001 80460 432 7/28/80 8/11/80 0.01710.001 80486 407 8/4/80 8/14/80 0.02610.002 80501 432 8/11/80 8/19/80 0.02110.002 80546 551 8/20/80 8/27/80 0.01610.001 80554 308 8/25/80 9/2/80 0.02710.002 80582 491 9/2/80 9/10/80 0.01910.001 80591 363 9/8/80 9/12/80 0.01710.001 80614 481 9/16/80 9/21/80 0.02310.002 9/22/80 2]
80637 543 10/1/80 10/6/80 0.03010.002 Quarterly Composite 6/30/80-10/1/80 10/24/80 7Be = 0.055+0.002 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
2/ Sample not collected due to mechanical failure.
w B-21 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 851 (pC1/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80658 301 10/6/80 10/20/80 0.04410.004 1/
80668 426 10/13/80 10/21/80 0.04510.003 80686 457 10/21/80 10/27/80 0.05410.004 80701 371 10/27/80 11/5/80 0.09210.006 80719 454 11/4/80 11/10/80 0.19910.013 80730 370 11/10/80 11/13/80 0.18610.012 80749 425 11/17/80 11/20/80 0.21410.014 80792 443 11/24/80 12/3/80 0.26010.017 80823 479 12/2/80 12/13/80 0.30010.019 80834 365 12/8/80 12/15/80 0.17310.012 80853 422 12/15/80 12/19/80 0.45610.029 80878 434 12/22/80 12/30/80 0.44810.029 80889 486 12/30/80 1/6/81 0.49010.031 Quarterly Composite 10/1/80-12/30/80 1/12/81 7Be = 0.12310.002 134,137Cs = <0.01 103Ru = 0.018+0.0002 140Ba = 0.01370.003 95Zr = 0.015+U.0002 140La = 0.00610.001 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
i hr I
B-22 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 052 (pci/m**3), First Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80127 441 3/10/80 3/18/80 0.013+0.001 1/
80148 423 3/17/80 3/24/80 0.029.10.002 80173 432 3/24/80 3/31/80 0.019.10.002 80186 481 4/1/80 4/7/80 0.022.10.002 Quarterly Composite 2/ 3/3/80-4/1/80 4/14/80 7Be = 0.117+0.011
)
134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
- <0.07 pCi/m**3.
2/ Airborne radioactivity measurements for this station were begun on 3/3/80.
4 n
I' f
i
-g B-23 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station OS2 (pCi/m**3), Second Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80196 373 4/7/80 4/14/80 0.03310.002 If 80224 594 4/17/80 4/23/80 0.04710.004 80236 256 4/21/80 5/1/80 0.03410.003 80244 433 4/28/80 5/13/80 0.02810.002 80256 427 5/5/80 5/16/80 0.03410.003 80267 473 5/13/80 5/19/80 0.01710.002 80300 441 5/20/80 5/29/80 0.02410.002 80311 428 5/27/80 6/2/80 0.02110.002 80339 359 6/2/80 6/11/80 0.02410.002 80349 438 6/9/80 6/16/80 0.00910.001 80361 548 6/18/80 6/26/80 0.01510.001 80383 310 6/23/80 6/30/80 0.02010.002 80399 427 6/30/80 7/8/80 0.01910.002 Quarterly Composite 4/1/80-6/30/80 7/25/80 7Be = 0.06010.009 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
r
[
B-24 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 052 (pCi/m**3), Third Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80410 427 7/7/80 7/18/80 0.01710.001 1/
80424 428 7/14/80 7/24/80 0.01110.001 80442 424 7/21/80 7/31/80 0.01610.001 80461 432 7/28/80 8/11/80 0.01310.001 80487 410 8/4/80 8/14/80 0.02610.002 80502 433 8/11/80 8/19/80 0.02110.002 80547 552 8/20/80 8/27/80 0.01710.001 80555 308 8/25/80 9/4/80 0.02410.002 80583 491 9/2/80 9/10/80 0.01810.001 80592 366 9/8/80 9/12/80 0.01610.001 80615 493 9/16/80 9/21/80 0.02110.002 80624 370 9/20/80 9/26/80 0.02310.002 80636 544 10/1/80 10/6/80 0.03410.002 Quarterly Composite 6/30/80-10/1/80 10/24/80 7Be = 0.04810.005 134,137Cs = <0.01 1/Unless specified, Iodine-131 concentrations were determined to be
- <0.07 pCi/m**3.
B-25 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station 052 (pCi/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80659 303 10/6/80 10/20/80 0.06710.005 1/
80669 431 10/13/80 10/22/80 0.04610.003 00687 456 10/21/80 10/27/80 0.05010.004 80700 373 10/27/80 11/14/80 0.08610.006 80717 455 11/4/80 11/10/80 0.14810.010 80731 370 11/10/80 11/13/80 0.18210.012 80750 429 11/17/80 11/20/80 0.20010.013 80793 445 11/24/80 12/3/80 0.25010.016 80824 481 12/2/80 12/13/80 0.27110.018 80835-364 12/8/80 12/17/80 0.16010.011 80854 423 12/15/80 12/19/80 0.45310.029 80877 432 12/22/80 12/30/80 0.38710.025 80888 487 12/30/80 1/6/81 0.43710.028 Quarterly Composite 10/1/80-12/30/80 1/13/81 7Be = 0.12610.002 134,137Cs = <0.01 103Ru = 0.022+0.003 140Ba = 0.01170.003 I
95Zr = 0.016+5.0003 54Mn = 0.0007+0.00007 140La = 0.01070.001 1
1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
w_
-=
B-26 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station SM (pCi/m**3), Third Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I' 80402 672 7/7/80 7/10/80 0.02310.002 1/
80417 242 7/11/80 7/21/80 0.02210.002 80449 365 7/24/80 8/4/80 0.02210.002 80462 424 7/31/80 8/11/80 0.02510.002 80494 432 8/7/80 8/18/80 0.02510.002 80536 427 8/14/80 8/23/80 0.02510.002 80548 482 8/22/80 8/27/80 0.02310.002 80564 367 8/28/80 9/4/80 0.02910.002 80585 428 9/4/80 9/10/80 0.02310.002 80606 430 9/11/80 9/16/80 0.02210.002
- I 80621 425 9/18/80 9/26/80 0.03510.003 80633 428 9/25/80 10/6/80 0.03510.004 80649 428 10/2/80 10/9/80 0.06310.004 i
Quarterly Composite 2_/ 6/26/80-10/2/80 10/27/80 7Be = 0.079+0.004 f
134,137Cs =' <0.01 j
1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pCi/m**3.
il 2fAirborne radioactivity measurements for this station were begun on 6/26/80.
I i
i i
8 L
.i
'i 1
B-27 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report I
4 Airborne Radioactivity Station SM (pC1/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta l
Number (m**3)
Date Date Activity 131I 80661 429 10/9/80 10/20/80 0.05910.004 1/
I l
80673 422 10/16/80 10/22/80 0.02710.002 80694 429 10/23/80 10/31/80 0.06510.006 80707 428 10/30/80 11/5/80 0.09310.006 80725 426 11/6/80 11/12/80 0.19810.013 80743 428 11/13/80 11/19/80 0.14510.010 80777 427 11/20/80 12/1/80 0.28510.018 80812 366 11/26/80 12/12/80 0.20710.014 80836 429 12/3/80 12/15/80 0.26810.017 80844 489 12/11/80 12/16/80 0.27710.018 80862 489 12/19/80 12/22/80 0.35510.023 80882 427 12/26/80 1/5/81 0.35610.023 80896 426 1/2/81 1/7/81 0.31610.020 Quarterly Composite 10/2/80-1/2/81 1/15/81 78e = 0.11110.003 134,137Cs = <0.01 103Ru = 0.020+0.0005 95Zr = 0.015+6.0005 54Mn = 0.000T+0.0001 140La = 0.00610.002 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
i t
i a
p-
i e
i B-28 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station SV (pCi/m**3), Third Quarter i
l Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80403 431 7/3/80 7/10/80 0.031+0.002 1/
80418 420 7/10/80 7/21/80 0.02219002 80431 445 7/17/80 7/24/80 0.01910.002 80450 418 7/24/80 8/4/80 0.02219002 I
80463 425 7/31/80 8/11/80 0.0451,0.003 80495 416 8/7/80 8/18/80 0.03819003 80537 434 8/14/80 8/23/80 0.0311,0.002 80549 430 8/21/80 9/2/80 0.02819002 80565 426 8/28/80 9/4/80 0.03719 003 80586 429 9/4/80 9/10/80 0.02519002 80607 427 9/11/80 9/16/80 0.03019 002 80622 441 9/18/80 9/26/80 0.0421,0.003 80632 415 9/25/80 10/6/80 0.04619 003 80650 484 10/3/80 10/9/80 0.07119005 Quarterly Composite 2/ 6/26/80-10/3/80 10/28/80 7Be = 0.093+0.002 134,137Cs =~<0.01 1
1/Unless specified, Iodine-131 concentrations were determined to be
~ 0.07 pCi/m**3.
2/ Airborne radioactivity measurements for this station were begun on 6/26/80.
I 4
- a
\\
B-29 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station SV (pC1/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 1311 80662 373 10/9/80 10/20/80 0.08610.006 1/
80674 427 10/16/80 10/22/80 0.03410.003 80695 426 10/23/80 10/31/80 0.08610.006 80706 428 10/30/80 11/5/80 0.09510.006 80724 2/
423 11/6/80 11/6/80 80744 419 11/13/80 11/19/80 0.18210.012 80778 435 11/20/80 12/1/80 0.30610.020 80813 476 11/28/80 12/12/80 0.30010.019 80838 377 12/4/80 12/16/80 0.22010.014 80845 428 12/11/80 12/17/80 0.37110.024 80863 483 12/19/80 12/22/80 0.36110.023 80883 405 12/26/80 1/5/81 0.48610.031 80897 316 12/31/80 1/7/81 0.58810.038 Quarterly Composite 10/3/80-12/31/80 1/15/81 7Be = 0.12410.003 134,137Cs = <0.01 103Ru = 0.025+0.0005 95Zr = 0.019+6.0005 140La = 0.00710.002 1/Unless specified, Iodine-131 concentrations were determined to be i
0.07 pCi/m**3.
2]Airparticulatenotcollectedonfilter;analyzediodinecartridgeonly.
B-30 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station LO (pC1/m**3), Third Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80404 406 7/7/80 7/10/80 0.016+0.001 1/
80419 253 7/11/80 7/21/80 0.02010.002 80432 414 7/18/80 7/31/80 O.01310.001 80451 387 7/24/80 8/4/80 0.01910.002 80464 468 8/1/80 8/11/80 0.02110.002 i
80496 369 8/7/80 8/18/80 0.01910.002 i
80538 484 8/15/80 8/23/80 0.02010.002 i
l 80550 389 8/21/80 9/2/80 0.02010.002 l
80566 428 8/28/80 9/8/80 0.02710.002 80587 428 9/4/80 9/10/80 0.01810.001 f
80608 428 9/11/80 9/16/80 0.02310.002 80623 467 9/19/80 9/26/80 0.03610.003 80634 431 9/26/80 10/6/80 0.04110.003 80651 432 10/3/80 10/9/80 0.05810.004 7
Quarterly Composite 2/ 6/30/80-10/3/80 10/27/80 7Be = 0.085+0.005 134,137Cs = <0.01 g
1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
2/ Airborne radioactivity measurements for this station were begun on I
6/30/80.
f' t
~ -
B-31 Report 411-81.56 TABLE B contd.
Diablo Canyon Power Plant 1980 Annual Report Airborne Radioactivity Station LO (pCi/m**3), Fourth Quarter Sample Volume Collection Counting Gross Beta Number (m**3)
Date Date Activity 131I 80663 422 10/10/80 10/21/80 0.05410.004 1/
80675 387 10/16/80
-10/23/80-0.02710.002 80696 427 10/23/80 10/31/80 0.07810.005 80708 472 10/31/80 11/5/80 0.10910.007 80726 387 11/6/80 11/12/80 0.19210.013 80745
-468 11/14/80 11/19/80 0.13710.009
.l 80779 427 11/21/80 12/1/80 0.27710.018 80825 430 11/28/80 12/12/80 0.20410.013 l
80837 427 12/5/80 12/16/80 0.17210.011 80848 430 12/12/80 12/17/80 0.31610.020 80864 424 12/19/80 12/22/80 0.385+0.025 li 80884 307 12/24/80 1/5/81 0.298t0.019 i
80898 448 12/31/80-1/7/81 0.52210.033 li
- i Quarterly Composite 10/3/80-12/31/80 1/16/81 7Be = 0.117+0.002
~
! i 134,137Cs = <0.01 103Ru = 0.020+0.0003
- j 95Zr = 0.018+6.0004 Ij i!
140La = 0.006 0.002 1
t; I
f-l 1/Unless specified, Iodine-131 concentrations were determined to be
<0.07 pC1/m**3.
g! +
}; a iiii I
i.
I
i TABLE B-3 Diablo Canyon Power Plant 1980 Annual Report Fish and Seafood Samples, Collected 1980 (pCi/kg wet)
Date Ratio Sample (Station No.)
Collected Dry / Wet 54Mn 59Fe 58Co 60Co 65Zn 134Cs 137Cs Others 80078 (DCM) 2/25/80 0.288
<22
<46
<25
<21
<53
<22
<27 Black Abalone Meat 80079 (DCM) 2/25/80 0.193
<74
<156
<75
<71
<147
<76
<76 Black Abalone Viscera 80116 (2F1) Comercial 3/5/80 0.173
<11
<36
<13
<11
<29
<10 25.317.09 Rock Cod 80117 (2F1) Comercial 3/5/80 0.214
<3.8
<11
<4.6
<4.5
<11
<3.6 32.713.21 Red Snapper 80152 (DCM) 3/5/80 0.205
<22
<47
<20
<16
<42
<17
<20 as Perch g.
80153 (7F2) 3/19/80 0.196
<13
<30
<14
<15
<34
<13
<14 Pismo Clam 80269 (DCM) 5/14/80 0.294
<12
<31
<12
<11
<25'
<10
<l2 Black Abalone Meat 80270 (DCM) 5/14/80 0.222
<32
<80
<36
<30
<67
<32
<33 Black Abalone Viscera 80328 (7F2) 5/18/80 0.177
<41
<110
<49
<47
<104
<44
<44
- o Pismo Clams 8
80329 (2F1) Comercial 5/29/80 0.198
<7.4
<26
<8.9
<7.1
<19
<6.4 7.3+2.1 Red Snapper 80330 (2F1) Commercial 5/29/80 0.185
<7.3
<24
<9.2
<7.4
<19
<6.1 1413.4 3
Cod g
Y'"P N
- 94,A'$Ma'%
gh4 m.qa.g p g
f TABLE B contd.
Date Ratio Sample (Station No.)
Collected Dry / Wet 54Mn 59Fe 58Co 60Co 65Zn 134Cs 137Cs Others 80331 (2F1) Commercial 5/29/80 0.269
<12
<46
<16
<13
<33
<12
<15 Salmon 80371(DCM) 6/4/80 0.200
<3.2
<7.8
<4.1
<5.8
<8.9
<4.1 1412.8 Perch 80372 (DCM) 6/4/80 0.215
<10
<29
<11
<11
<19
<6.9
<14 Blue Rockfish 80567 (DCM) 8/29/80 0.184
<16
<33
<12
<9.8
<24
<8.4 1417.8 Perch 80568 (DCM) 8/29/80 0.200
<12
<41
<16
<12
<28
<11 1219.5 Blue Rockfish I
80569 (DCM) 8/29/80 0.261
<13
<25
<11
<14
<20
<8.1
<14 w"
Red Abalone Meat 80570 (DCM) 8/29/80 0.237-
<26
<84
<33
<26
<61
<26
<33 Red Abalone Viscera 80571 (DCM) 8/31/80.,
0.279
<31
<81
<37
<36
<63
<28
<38 Black Abalone Meat 80572 (DCM) 8/31/80 0.222
<8.7
<23
<17
<9.3
<43
<9.3
<11 Black Abalone Viscera 80597 (DCM) Commercial 9/8/80 0.201
<5.8
<16
<10
<11
<21
<5.1 2714.2 Rock Cod 4*
80598 (2F1) Comercial 9/8/80 0.226
<11
<20
<11
<9.9
<20
<7.0
<40 2
Red Snapper 7
+
5 80735 (2F1) Commercial 11/12/80 0.229
<13
<52
<27
<11
<19
<5.3 3315.1 1,,
Rock Cod l
=
...~n..
TABLE B contd.
Date Ratio Sample (Station No.)
Collected Dry / Wet 54Mn 59Fe 58C0 60Co 65Zn 134Cs 137Cs Others 80736 (2F1) Connercial 11/12/80 0.236
<3.0
<22
<6.2
<4.9
<9.1
<2.5 29+2.1
)
Red Snapper 80784 (DCM) 11/17/80 0.291
<6.3
<40
<14
<13
<17
<5.6
<12 Red Abalone Meat 80785 (DCM) 11/17/80 0.280
<14 s <87
<25
<12
<30
<11
<12 Red Abalone Viscera 80786 (DCM) 11/19/80 0.290
<16
<67
<18
<13
<22
<7.3
<23 Blue Rockfish 80787 (DCM) 11/19/80 0.215
<4.4
<25
<8.9
<4.1
<12
<4.2 10+3.0 Striped Perch 80814 (DCM) 11/24/80 0.283
<4.2
<25
<8.5
<5.4
<13
<3.7
<5.4
[
Black Abalone Meat x
80815 (DCM) 11/24/80 0.245
<11
<79
<21
<16
<25
<9.8
<11 Black Abalone Viscera E
E A
2 75 N
~
B-35 Report 411-81.56 TABLE B-4 Diablo Canyon Power Plant 1980 Annual Report Milk Samples, Collected 1980 (pCi/1)
Sample Date i
(Station No.) Collected 1311 134Cs 137Cs 140Ba 140La Others 80024(SF2) 1/20/80
<0.20
<4.7
<4.9
<17
<14 80025(7G3) 1/20/80
<0.20
<4.8
<4.8
<19
<13 80062(SF2) 2/17/80
<0.20
<4.0
<4.4
<13
<9.7 80063 (7G3) 2/17/80
<0.20
<1.8
<2.0
<5.5
<4.1 80130(SF2) 3/16/80
<0.20
<4.0
<4.5
<12
<7.9 80131(7G3) 3/16'/80
<0.20
<1.9
<2.2
<5.6
<4.1 80228(SF2) 4/20/80
<0.20
<2.2
<2.4
<6.2
<4.6 80229(7G3) 4/20/80
<0.20
<3.4
<3.5
<9.4
<6.7 80281(SF2) 5/18/80
<0.20
<1.6
<1.8
<6.9
<5.1 80282(7G3) 5/18/80
<0.20
<1.6
<1.8
<7.2
<5.2 80367 (5F2) 6/22/80
<0.20
<3.7 2.410.97 <12
<7.6 80368(7G3) 6/22/80
<0.20
<3.4
<4.3
<14
<11 l
l 80433(SF2) 7/20/80
<0.20
<1.2
<1.7
<5.3
<1.2 l
80434 (7G3) 7/20/80
<0.20
<2.2
<2.9
<13
<2.7 l
?I 80539 (7G3) 8/17/80
<0.20
<1.0 2.511.3
<6.5
<1.1 80609 (5F2) 9/14/80
<0.20
<1.3
<1.6
<5.2
<1.2
(
80610(7G3) 9/14/80
<0.20 1.110.7
<1.6
<5.8
<1.6 80676 (5F2) 10/19/80
<0.20
<0.8
<0.9
<7.6
<1.0
[
80677(7G3) 10/19/80
<0.20
<1.4
<1.6
<6.6
<1.7 80753(SF2) 11/16/80
<0.20
<2.2
<3.0
<14
<5.2 f
80751(7G3) 11/16/80
<0.20
<1.4
<1.7
<10
<2.1 l
80856 (5F2) 12/14/80
<0.20
<1.0
<1.6
<4.9
<1.2
+
[l 80857 (7G3) 12/14/80
<0.20
<1.3
<1.6
<6.8
<1.6 i
f G
i I;
I',
u
B-36 Report 411-81.56 TABLE B-5 Diablo Canyon Power Plant 1980 Annual Report FoodProducts, Collected 1983(pCi/kgwet)
Sample Date Ratio (Station No.)
Collected Dry / Wet 1311 134Cs 137Cs Others 80064 (7G1) 2/17/80 0.141
<14
<5.1
<5.8 7Be=262138 Brussels Sprout Greens 80065 (SF2) 2/17/80 0.093
<6.6
<6.0
<6.2 7Be=192149 Cauliflower Greens 80083 (7C1) 2/26/80 0.116
<4.4
<2.5
<2.7 7Be=47123 Snow Peas 80283 (7G1) 5/18/80 0.125
<7.3
<4.3
<4.6 78e=132130 Celery Greens 80284 (SF2) 5/18/80 0.152
<19
<4.6
<5.1 Broccoli Greens 80334 (7C1) 6/3/80 0.136
<11
<2.3
<2.5 Snow Peas 80435 (7C1) 7/19/80 0.136
<12
<1.9
<2.2 Snow Peas I
80436 (7G1) 7/20/80 0.134
<17
<4.4
<5.2 7Be=2871106 Celery Greens 80437 (5F2) 7/20/80 0.154
<53
<1.7
<3.5 Squash Greens 80752 (7G1) 11/16/80 0.152
<4.1
<1.9
<2.2 7Be=44+14 103Ru=T.911.3 Broccoli Greens I
80754 (5F2) 11/16/80 0.093
<11
<4.5
<5.5 7Be=32+6 l
Cauliflower Greens 103Ru=T.210.7
[
80788 (7C1) 11/24/80 0.136
<6.2
<4.9
<5.9 Snow Peas l
l i
~
m B-37 Report 411-81.56 TABLE B-6 Diablo Canyon Power Plant 1980 Annual Report Sediment Samples, Collected 1980 (pCi/kg dry)
Sample Date (Station No.)
Collected 134Cs 137Cs Others Comments 80066 (DCM) 2/19/80
<22
<22 80261 (DCM) 5/13/80
<26
<25 80480 (DCM) 8/4/80
<17
<18 80711 (DCM) 11/3/80
<5.1 461,7 4
i i
I ti
d TABLE B-7 Diablo Canyon Power Plant 1980 Annual Report Dosimeter Measurements (milliroentgens per month)
Sta-Month Annual tion Jan. Feb. March April May June July Aug.
Sept.
Oct.
Nov.
Dec.
Total OS1 9.16 6.77 7.37 6.92 6.95 5.34 9.59 6.75 6.70 8.03 6.94 6.s8 87.4 l
OS2(a) 6.34 5.00 8.77 6.07 6.04 6.93 6.15 6.30 77.4(b)
IS1(a) 5.26 3.79 6.77 4.91 4.57 5.52 4.68 5.47 61.5(b) 2S1(a) 6.43 4.49 7.72 6.04 5.72 7.90 6.02 6.54 76.3(b) 3S1(a) 9.04 7.08 11.21 9.79 7.92 10.99 7.30 6.35 104.5(b) 4S1(a) 6.95 5.04 8.86 7.25 6.40 7.78 7.14 6.62 84.1(b) 5S1 9.41 7.52 8.27 7.57 8.71 6.01 10.39 7.95 7.71 8.82 7.06 7.28 96.7 SS3 8.91 6.59 8.06 7.29 8.02 5.31 9.85 8.45 6.96 8.60 6.86 7.46 92.4 6S1 5.88 4.95 5.38 5.28 5.56 3.97 6.77 5.40 4.41 5.90 4.94 4.86 63.3 7S1(a) 7.11 4.93 8.41 6.98 6.41 8.04 6.36 7.34 83.4(b) =
7S2(c) 15.39 16.85 16.45 22.09 70.8 M
8S1 6.13 5.49 5.82 6.29 6.24 4.31 7.80 5.48 5.16 6.97 5.61 5.92 71.2 8S2 6.39 5.53 5.91 5.57 5.76 4.01 7.82 5.04 4.33 6.49 5.46 6.11 68.4 9S1(a) 8.82 6.31 9.95 7.96 7.77 10.15 7.82 8.13 100.4(b)
MT1 7.76 6.32 6.96 6.65 7.39 4.83 8.83 6.63 6.04 7.51 6.39 6.97 82.3 WN1 5.24 4.37 4.94 4.69 4.87 3.18 6.29 4.41 4.49 5.13 4.61 4.55 56.8 1A1 5.16 3.98 4.31 4.37 4.80 3.36 5.90 4.50 4.20 5.34 4.28 4.37 54.6 081 4.99 3.41 3.90 3.51 4.10 2.90 5.02 3.51 3.79 4.05 3.60 8.25 51.0 y
1Cl(a) 5.08 3.39 6.05 4.04 3.90 4.93 4.59 4.64 54.9(b)]
SCl(a) 6.33 4.93 8.76 6.37 6.09 7.91 5.85 5.45 77.5(b)[
7C1 7.16 5.85 6.78 6.14 6.43 4.81 7.86 6.25 5.90 10.61 5.67 6.72 80.2 y
201 5.07 4.18 4.64 4.32 4.55 3.34 5.59 4.40 3.91 5.08 4.09 3.92 53.1 3
3D1(a) 5.02 3.84 6.38 4.98 4.76 5.21 4.68 4.44 59.0(b) E
TABLE B contd.
Sta-Month Annual tion Jan. Feb. March April May June July Aug.
Sept.
Oct.
Nov.
Dec.
Total 401 4.78 4.15 4.82 4.30 4.66 3.46 5.84 4.37 4.30 5.46 4.30 4.78 55.2 6D1(a) 6.32 4.68 7.73 6.04 5.45 7.12 6.05 5.52 73.4(b) 7D1 4.89 3.67 4.56 4.08 4.23 3.20 5.22 3.96 4.01 4.74 3.84 4.73 51.1 702 7.07 5.90 6.62 6.12 7.13 4.79 8.65 7.31 6.36 8.56 6.86 7.43 82.8 j
2F2 6.05 4.87 5.35 4.92 5.25 3.57 6.69 5.02 4.97 6.00 4.76 4.79 62.3 SF1 7.14 5.76 6.43 5.99 6.66 4.29 7.85 6.20 5.95 8.20 5.80 6.35 76.6 SF3(c) 23.90 19.29 20.59 29.72 93.5 7F1 6.43 5.07 5.81 5.72 6.15 4.30 7.75 5.92 5.61 7.11 5.48 5.73 71.1 7G2 6.63 5.96 6.78 6.20 6.77 5.15 8.65 6.15 6.21 7.37 6.29 6.52 78.7 SM(d) 14.18(e) 28.69 102.9(f)
LO(d) 14.34(e) 27.09 99.4(f)
SV(d) 13.24(e) 27.12 96.9(f)
(a)These stations were added to the monitoring program during May 1980.
(b)The annual total for the new stations is based on eight months' data projected for the full year.
(c)These stations are collected on a quarterly basis with the results listed under the last month of the quarter.
(d)These stations were added to the monitoring program during the third quarter of 1980.
(e)The results for third quarter include monitoring during August and September only.
(f)The annual total for the new stations is based on the data from the third and fourth quarters (five months) projected for the full year.
.g 8n a
a i Nl
i TABl.E B-8 Diablo Canyon Power Plant 1980 Annual Report Indicator Marine Samples, Collected 1980 (pCi/kg wet)
Date Ratio Sample (Station No.)
Collected Dry / Wet 54Mn 59Fe 58Co 60Co 65Zn 134Cs 137Cs Others 80077 (DCM) 2/25/80 0.179
<7.5
<20
<8.3
<8.2
<22
<6.7
<7.7 Iridaea 80107 (DCM) 2/27/80 0.154
<36
<90
<35
<39
<80
<40
<43 California Mussel 80108 (DCM) 2/27/80 0.497
<5.3
<13
<6.3
<5.7
<15
<6.0
<6.6 Gooseneck Barnacle Shell 80109 (DCM) 2/27/80 0.199
<5.7
<19
<7.2
<5.4
<14
<6.1
<6.0 Gooseneck Barnacle Meat 80271 (DCM) 5/14/80 0.180
<7.2
<40
<15
<13
<9.4
<7.6
<12 California Mussel y
80272 (DCM) 5/14/80 0.224
<5.0
<12
<5.6
<4.6
<12
<4.7
<5.4 Gooseneck Barnacle Meat 80273 (DCM) 5/14/80 0.472
<10
<28
<12
<10
<22
<10
<11 Gooseneck Barnacle Shell 80274 (DCM) 5/14/80 0.172
<5.9
<19
<6.7
<7.1
<14
<5.6
<6.4 Iridaea 80369 (DCM) 6/11/80 0.057
<1.0
<6.7
<1.5
<1.4
<2.9
<0.8
<1.9 Bull Kelp Blade g
80370 (DCM) 6/11/80 0.118
<3.6
<12
<5.6
<3.0
<8.3
<2.4
<3.3 Bull Kelp Pneumatocyst 1
80573 (DCM) 8/31/80 0.166
<36
<98
<48
<49
<72
<40
<55 g
California Mussel 80574 (DCM) 8/31/80 0.509
<8.9
<20
<10
<6.8
<17
<7.0
<7.7 Gooseneck Barnacle Shell
]
i TABLE B contd.
Date Ratio Sample (Station No.)
Collected Dry / Wet 54Mn 59Fe 58C0 60Co 65Zn 134Cs 137Cs Others 80575 (DCM) 8/31/80 0.240
<3.2
<8.7
<2.6
<3.8
<5.4
<2.0
<3.3 Gooseneck Barnacle Meat 80576 (DCM) 8/31/80 0.159
<6.0
<20
<8.6
<9.0
<14
<5.3
<6.4 j
Iridaea 80595 (DCM) 9/5/80 0.061
<5.0
<13
<7.4
<5.9
<13
<4.8
<5.4 l
Bull Kelp Blade i
805% (DCM) 9/5/80 0.093
<4.4
<15
<4.9
<5.1
<14
<3.5
<4.2 Bull Kelp Pneumatocyst 80782(DCM) 11/17/80 0.039
<1.1
<13
<2.0
<1.1
<3.2
<0.9
<1.0 Bull Kelp Blade.
80783 (DCM)-
11/17/80 0.126
<4.1
<29
<7.3
<4.0
<13
<3.0
<3.5 Bull Kelp Pneumatocyst g
i 80816 (DCM) 11/24/80 0.162
<8.6
<47
<18
<15
<18
<8.3
<9.6 California Mussel 80817 (DCM) 11/24/80 0.251
<1.2
<7.1
<2.2
<2.7
<2.9
<1.1 2.210.8 Gooseneck Barnacle Meat 80818(DCM) 11/24/80 0.500
<2.8
<16
<4.8
<4.0
<6.2
<2.8
<3.0 Gooseneck Barnacle Shell 80819 (DCM) 11/24/80 0.170
<1.6
<10
<2.8
<2.0
<4.4
<1.5 1.611.0 Iridaea j
3 e
)
?
e On i
B-42 Report 411-81.56 TABLE B-9 Diablo Canyon Power Plant 1980 Annual Report Land Use Census Distances in Miles'from the Unit 1 Centerline to the Nearest Milk Animal, Residence, or Vegetable Garden 22-1/2 Degree Radial Sector (l)
NW NNW N
NNE NE ENE E
ESE SE Nearest milk animal None(2) None None None None None None None None Nearest residence 3.6 1.75 None 3.3 4.9 4.7 3.8 None None Nearest vegetable None None None None None None None None 2 garden (1) Sectors not shown contain no land beyond the site boundary other than islets not used for the purposes indicated in this table.
(2)None within five miles (typical of other places where "None" is used).
i i