ML20132C882

Annual Environ Rept Addendum for 1984

ML20132C882
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	09/16/1985
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML20132C859	List: ML20132C853 ML20132C882
References
NUDOCS 8509270175
Download: ML20132C882 (5)

Text

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ATTACHMENT 1 Consumers Power Company Big Rock Point Plant Docket 50-155 1

1984 ANNUAL ENVIRONMENTAL REPORT ADDENDUM September 16, 1985 e

8509270175 AM BWPDRI55 PDR ,

R 4 Pages l

OC0985-0008B-NLO2'

.I Big Rock Point 1984 Annual Environmental Report Addendum A. Radiological Environmental Monitoring

.1. Sampling Summary This supplement to the Big Rock Point 1984 Environmental Monitoring Annual Report incorporates a total ~ of 27 pieces of analytical data that were unavailable during initial report preparation. The '

following media types affected by use of the additional dati are:

1) aquatic ~ biota, 2) sediments and 3) vegetation (food crops).

There were no significant changes in data interpretation with the incorporation of the completed results. A listing of the highest, lowest and average annual concentration of isotopes per specified media is presented in Table RSD-E-06B with any changes indicated in the right-hand margin.

2. Environmental Dose Estimates -

Levels of radioactive material in environmental med'ia as reported in the 1984 Big Rock Point Environmental Monitoring Annual Report remain the same.

B. Discussion and Interpretation of Results

1. Aquatic Biota: A total of 13.previously unavailable aquatic biota sample results (1-gross beta, 4-Sr89, 4-Sr90 and 4-other gammas) were incorporated into the-1984 Environmental Monitoring Annual Report. There were no data reporting changes for any locations.

Due to an oversight, Sr89 was not originally noted in Table RSD-E-06B for 1984. No gross beta statistical levels were exceeded.

2. Bottom Sediments: A total of 5 previously unavailable sediment sample results (1 gross beta, 4-Sr89 and 4-Sr90) were incorporated into the 1984 Big Rock Point Environmental Monitoring Annual Report.

While there were no changes in locations detailing the highest, lowest and average isotope concentrations; a change was noted in the amount of Sr89 and Sr90 at 9 Mile Point. .The levels of these isotopes increased slightly (including average concentration). No reporting levels were exceeded.

3. -Vegetation (food crops): A total of 9 previously unavailable food crop sample results (1-gross beta,~4-Sr89 and 4-Sr90) were incocporated into the 1984 Big Rock Point Environmental Monitoring Annual Report. Again, there were no changes in locations detailing the highest, lowest and average isotope concentrations; however, a decrease was noted in the amount of Sr89 at the garden location, 3 mi E of BRP (35 pCi/g to 27 pCi/g). .No reportable levels for Sr89 or Sr90 were exceeded.

IC0985-0218A-HP01

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TABLE RSD-E-06A BIG ROCK POINT PLANT RADIOLOGICAL ENVIRONMENTAL' MONITORING

. SAMPLING AND ANALYSIS

SUMMARY

JANUARY 1 TO DECEMBER 31, 1984

1. .of , # of Number of Locations Sampling ' Samples Significantly Above Medium Description Type of Analysis

• Frequency Location Collected Concurrent Background Air ' Continuous Gross Beta, 1-131 Weekly 7 364 none

@ approx -

2 cfm Lake Composite' Gross Beta, H-3. Monthly 2 24 none

. Water Well Grab' Gross Beta Monthly 2 24 none Water Milk - Grab I-131, Sr-89/90, Monthly 4 46 none Gamma- Continuous TUD Monthly 18 213 none Dose Quarterly 18 70 none Annual 18 17 none Aquatic' Grab Gross Beta, Semiannually 5 44 none Biota Sr-89/90, Gamma Isotopic

-Sediment Grab Gross Beta, Semiannually '2 4 none Sr-89/90, Gamma Isotopic Vegeta- Grab Gross Beta, In season 5 11 none tion Sr-89/90, when available (food Gamma Isotopic crops)

MIO385-0056S-HP01

w. e, TABLE RSD-E-06B BIG ROCK POINT PLANT HIGH, LOW AND AVERAGE CONCENTRATION

. FOR THE HIGHEST AVERAGE SAMPLING LOCATION JANUARY I to DECEMBER 31, 1984

' Lower Limitf ")

Media Type of Analysis of Detection Location High Low Average Air Gross Beta 0.01 Charlevoix 4.6 0.9 2.33 i (pCi/m3 ) I-131 <0.02 (4.5 miles SW) <LLD <LLD <LLD Lake Water Gross Beta 1.0 Discharge 5.1 2.1 3.0 (pci/1) H-3 100.0 Discharge 230 <100.0 188.3

.Well Water (pci/1) Gross Beta 1.0 Site 2.3 <1.0 1.6 Milk I-131 0.5 all <LLD <LLD <LLD (pCi/1) Cs-137 1.0 RM (6.5 mi SSE) 9.1 . <5.0 5.3 Sr-89 5.0 all <LLD <LLD <LLD Sr-90 1.0 RM (6.5 mi SSE) 6.5 2.3 4.27 Gamma Dose TLD (Monthly Traverse City 7.5 4.7 6.1 (mR/ month) (50 mi SSW)

(mR/ quarter) TLD (Quarterly) Susan Lake- 16.9 12.1 15.0 -

4 (3.5 mi SE) j TLD (Annual) 9 mi pt (3 mi E) -- --

54.2 g Petoskey (10.5 mi E)

Biota (pCi/g Wet)(b) Gross Beta (algae) 1.0 9 mi pt (3 mi E) 4.4 3.0 3.7 l Sr-90 (crayfish) .005 k mile south .28 .17 .22 Cs-137 (periphyton) .08 k mile north 0.80 0.29 0.55 1

Co-60 (algae) .05 Discharge 0.25 0.25 0.25 Cs-134 (all locations) .08 all <LLD <LLD <LLD ,

Mn-54 (perphyton) .08 Discharge 1.03 1.03 1.03 Sr-89 (algae) .025 Discharge 2.1 0.08 1.09 l {

Sediment (pCi/g dry) Gross Beta 1.0 9 mi pt (3 mi E) 7.6 7.1 7.4 l f Cs-134 .08 all <LLD <LLD <LLD .

Cs-137 .08 9 mi pt (3 mi E) 0.80- 0.10 0.45 Co-60 .05 9 mi pt (3 mi E) 0.07 <.05 0.06 l

. Sr-89 .025 9 mi pt (3 mi E) 0.27 0.03 0.15 a Sr-90 .005 9 mi pt (3 mi E) 0.033 0.017 0.025

MIO385-0056S-HP01 1

• *e TABLE R5D-E-06B (cent'd)

BIG ROCK POINT PLANT HIGH, LOW AND AVERAGE CONCENTRATION

. FOR THE HIGHEST AVERAGE SAMPLING LOCATION JANUARY 1 to DECEMBER 31, 1984 Lower Limit (*}

Media Type of Analysis of Detection Location High Low Average Vegetation (food Gross Beta 1.0 3 mi E 6.9 4.8 5.9

! crops pCi/g wet) Cs-134 - .08 all <LLD <LLD <LLD i^

Cs-137 .08 all <LLD <LLD <LLD Sr-90 .005 3 mi E 0.24 0.22 0.23 Sr-89 .025 3 mi E' O.52 0.12 0.27 l

.e i

a. -Nominal lower limit of detection (LLD) defined in HASL-300, pga. D-08-01, 02 and 03.

b. Sr-89, Cs-134 and Hn-54 were below minimum detectable levels.

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