ML18065A677

Annual Radiological Environ Operating Rept Jan-Dec 1995.

ML18065A677
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Site:	Palisades
Issue date:	12/31/1995
From:	Grogan M CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
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ATTACHMENT CONSUMERS POWER COMPANY PALISADES PLANT DOCKET 50-255 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT -

JANUARY-DECEMBER 1995

- ---~- -----------'.

,,------9605060087 960429 PDR ADOCK 05000255 R PDR

To RWSmedley, Palisades From MLGrogan. Palisades CONSUMERS POWER Date April 22. 1995 COMPANY Subject PALISADES PLANT - Internal ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING Correspondence REPORT - JANUARY-DECEMBER 1995 CC DJMalone. Palisades (w/o attachments) MLG96*013 DCC: 950/22*07*01*01/LP 950/24*03*10/LP REMP File (2)

Attached please find the subject report prepared and reviewed in accordance with Health Physics Procedure HP 10.4. This report is accurate. pertinent and complete to the best of our ability in meeting the requirements of Palisades Offsite Dose Calculation Manual. Appendix A. section IV.B and Technical Specification 6.9.1.e.

The Palisades Annual Radiological Environmental Operating report was prepared by MLGrogan. Radioactive Environmental Monitoring Program Coordinator and RTCurnow. Senior Engineering Technician. Independent technical review was performed by TPNeal. Environmental Supervisor. The report was administratively reviewed and approved by DJMalone. Chemistry &Radiological Services Manager.

Report prepared by:

µ,Q~~

MLGrogan. REMP Co~tor

,-- ~L Date Technical Review by:

TPNeal .lr~Physics Environmental Supervisor Approval and Administrative Review by:

ll:JM#<o#l-lone. Chemistry &Radiological Services Manager tfh4b Date

1 I. Introduction The 1995 Palisades Nuclear Plant Annual Radiological Environmental Operating Report provides a summary and data interpretation of the Palisades Radiological Environmental Monitoring Program as conducted during the 1995 reporting period. Reporting requirements are detailed in Palisades Offsite Dose Calculation Manual. Appendix A. sections III.J and IV.B. Tables E-1 through E-3. and Table F-1.

There are no remaining 1995 laboratory sample analyses pending completion for inclusion into this report. Detailed sample station identification and location information can be found in Attachment 2 of Health Physics Procedure HP 10.10 (Enclosure D). The results of all environmental samples collected are evaluated as follows:

A. Air iodine and particulate and TLDs (monthly, quarterly and annual) data were statistically evaluated at the 95% confidence level by the methodology detailed in Health Physics Procedure HP 10.4. The data were compared against two criteria: the first criterion is the statistical difference which indicates whether the sample results from near sites are greater than those from control sites. and whether or not the difference is significant. The second criterion is the evaluation level (twice the statistical difference) which is the minimum difference in the population means for which a corresponding difference in sample means will exceed the statistical difference with 95% confidence. If the evaluation level is exceeded. then correlation of the results with effluent releases is done.

B. Well water. lake water. sediment. fish and other aquatic biota samples were evaluated using data means comparisons against an appropriate control location (if available) and Palisades Offsite Dose Calculation Manual. Appendix A. limits.

II. Reportable Event None III. Discussion and Interpretation of Results A. Air Sample A total of 617 air samples were collected and analyzed during 1995.

Four sample results were rejected from the data analysis due to suspect light filters. The results were not considered reliable for inclusion in the statistical analysis. Seven Air samples were not collected in 1995. Five were due to a problem with power supply to the sampling station at the 4-JS location (3.5 mi. ESE). One air sample had a low volume due to the power to the sampler being turned off. One air sample at a control station was not collected until the following week. One sample was rejected due to low collection volume as a result of pump failure. Three samples from the control stations were lost in the mail from the February 22. 1995 collection date. Palisades ODCM. Appendix A. sensitivities were met on all other samples collected. Refer to Enclosure A for all sample collection anomaly evaluations.

2 Comparison of the airborne particulate sample data between near-site and control locations did not exceed the statistical difference. In many instances. control location sample values were greater. The means of gross beta results for control and indicator locations were 0.022 pCi/m3 and 0.022 pCi/m 3 , respectively. No sample analyses identified I-131 activity above minimum detectable levels.

Air iodine/particulate samples are collected on a weekly basis from twelve air sampling locations. Air is metered into the sampling unit at a continuous one cubic foot per minute flow rate through a Gelman 47mm air filter (air particulate) and a Scott air iodine cartridge. Both filters are in-line with each other and housed within the same filter holder.

B. Lake Water A total of 36 individual monthly lake water composite samples were collected from three locations during 1995. Lake water samples from the Palisades Lake-in (1-ST Intake), the South Haven Municipal Water system intake (25-SH Raw water). and Ludington Lake-in (32-LP Intake) are collected daily and composited into monthly samples.

Evaluation of the monthly lake water analytical results was based on a data means comparison between the Palisades Lake-in (indicator).

the South Haven Municipal raw water (indicator) and Ludington Lake-in (control) locations. The results were also evaluated against the Palisades Offsite Dose Calculation Manual. Appendix A, reporting limits.

Gross beta analyses are required for all lake water samples. The means for gross beta indicators and controls were 1.8 pCi/L and 1.8 pCi/L. respectively. No Tritium was detected in either indicator or control samples. No Palisades ODCM reporting limits were exceeded.

Although the lake-out (discharge) sample is not used as an indicator in the Radiological Environmental Monitoring Program it is monitored for activity. Monthly gross alpha and tritium results from the Palisades Lake-in and Ludington Plant Intake control samples were used for comparison data against the Lake-out (discharge) sample results. Gross alpha was detected in March of 1995 for both Lake-out and Lake-in samples (Ludington Intake samples are not analyzed for gross alpha). Several lake-out tritium results were positive.

On four occasions during 1995 the tritium activity for the discharge was above the ODCM action level of 1000 pCi/L. These elevated levels were all correlated to liquid effluent discharges and were confirmed by comparison to calculated effluent tritium concentrations.

Palisades Lake-in. South Haven Municipal and Ludington Lake-in water samples are collected daily for composite into a monthly sample.

One-gallon of Palisades Lake-in water and two gallons each of South Haven Municipal water and Ludington Lake-in water are sent to Teledyne Brown Engineering for analysis. No treatment of the water samples with preservative is required.

3 C. Drinking water A total of 36 individual monthly drinking water samples were collected from the South Haven Municipal Water System and Ludington Pump Storage Water System C25-SH Raw Water. 25-SH Treated and 32-LP Intake) during 1995. The South Haven samples are obtained from the South Haven Municipal Water System intake Craw water) and South Haven Municipal Water System treated water. The South Haven lake water samples Craw water) are evaluated with lake water and drinking water samples. The Ludington samples were collected from the lake inlet collection point. Samples are collected daily for composite into a monthly sample. for the South Haven raw and treated water samples. and a monthly grab sample is obtained for the Ludington well water sample. The South Haven samples are used as indicating locations and the Ludington samples serve as controls.

Evaluation of the drinking water analytical results was based on a data means comparison between the indicator locations and the control location. as well as a comparison to the Palisades ODCM reporting limits. Both of the South Haven Municipal lake water intake and treated drinking water samples require gross beta analyses. A tritium analysis is required for the treated water only. The gross beta means for the indicator and control locations were 1.9 pCi/L and 1.8 pCi/L, respectively. Two South Haven Municipal Water System treated water samples had detectable tritium reported both at 158 pCi/L. None of the control sample had any detectable tritium results. No special or supplemental analyses were required during 1995.

A two-gallon quantity of each sample is sent to Teledyne Brown ,

Engineering for analysis. No treatment of the water samples with a preservative is required.

D. Well Water A total of 108 monthly well water samples were collected from nine locations during 1995. The Palisades site well Cl-ST Well) indicator location is collected daily and composited into a monthly sample. The State Park C8-SP) and Covert Township Park (9-TP) well water samples (controls) are collected as monthly grab samples only.

Five other site area wells serve as indicators; one sample is collected from the warehouse building (39-ST), one sample is collected from the outage building C40-ST) and one sample each is collected from the monitoring wells #14 C41-ST), #15 C42-ST) and #16 C43-ST) which were installed to monitor the groundwater around the

• Steam Generator Storage Facility. These five sample points are sampled once a month. The Ludington Pump Storage location C32-LP Well) serve as additional controls for the well water samples.

Evaluation of the well water analytical results was based on a data means comparison between the six indicator locations and the three control locations as well as with the Palisades ODCM reporting limits.

4 Tritium and gross beta analyses are required for the well water samples. The gross beta means for indicator and control locations were 4.4 pCi/L and 1.7 pCi/L. respectively. The tritium mean for the indicator samples was 181 pCi/L. The single positive analytical result for the control locations was 155 pCi/L.

No Palisades ODCM reporting limits were exceeded for the 1995 well samples. Evaluation of the gross beta.activity between indicator (1-ST. 39-ST. 40-ST. 41-ST. 42-ST and 42-ST) and control (8-SP. 9-TP. and 32-LP) revealed a statistical difference between the indicators and controls, however. the evaluation level was not exceeded. Several samples from site well #14 (41-ST) exceeded the gross beta ODCM action level of 10 pCi/L. The range of analytical results for samples exceeding 10 pCi/L was 11.7 to 58.7 pCi/L. The gamma analysis of these samples indicated the presence of K-40 and support the conclusion that these elevated gross beta results are not the result of plant effluents. These wells typically trend around 4 to 8 pCi/L gross beta and it is not unusual for results to exceed the 10 pCi/L action level during the winter months. Refer to enclosure A.

Well water samples ~onsisting of two one-gallon quantities for each well are sent to Teledyne Brown Engineering for analysis. No treatment of the water samples with a preservative is necessary.

E. Milk A total of 48 individual monthly milk samples were collected from four different dairy farms (stations 26-FC/JC. 27-KK. 28-GH/DC and 29-WS) during 1995. The milk samples are obtained as grab samples (from dairy milk holding tanks). During late July of 1995, Glenn Hessey (28-GH. 6 mi E) sold his remaining dairy herd. Beginning in August of 1995 the Danny Carpenter Farm (28-DC. 7.25 mi E) was selected as the replacement milk sample station.

All analysis results listed in Table 10.4-2 were not detectable. No special or supplemental analyses were required. nor were any Palisades ODCM reporting limits exceeded. Analysis of milk samples for Sr-89 and Sr-90 were deleted from the program during 1994.

Milk samples are required monthly (usually collected the 1st week of the month) from each designated location. Two one-gallon quantities of raw milk (grab sample) are obtained per sample location in order to meet analytical requirements. Each sample quantity is treated with a sodium bisulfite (40 grams per gallon ) preservative prior to being sent to Teledyne Brown Engineering.

F. TLDs - Gamma Dose There were a total of 345 monthly, 111 quarterly and 25 annual TLDs collected and analyzed during 1995. A total of twelve TLD's (3 Monthly, 5 Quarterly, and 4 Annual) were missing in 1995. Two were damaged by animals. 4 were stolen. and 6 were lost in the mail.

Refer to enclosure A for all sample collection anomaly evaluations.

5 The Palisades gamma assessment program consists of 29 locations:

one directly on-site. nine near site and six Steam Generator Storage Facility TLDs for a total of sixteen inner ring TLDs. ten outer ring (1.0 to 5.5 miles out) and 3 control TLDs (30 to 55 miles out). A thirtieth TLD is placed in a lead storage cave and used as a control for in-transit dose monitoring and subtraction.

The monthly and quarterly TLD data evaluations were accomplished by statistically comparing the inner ring TLDs (site boundary locations 1-ST. 13-21 ST and 33-38 ST) and the outer ring TLDs (locations 2-TH through 9-TP. 23-SN25 and 24-SN22) against the control TLD locations (10-GR through 12-DG). The annual TLD data evaluation was done by direct comparison of data points only. No monthly or quarterly statistical differences were exceeded.

For 1995, the average monthly gamma readings were: 3.4 mR for the inner ring TLDs (site boundary), 4.0 mR for the outer ring TLDs (1.0 to 5.5 miles out). and 3.9 mR for the control TLD locations. The average quarterly gamma readings were: 11.2 mR for the inner ring TLDs. 13.2 mR for the outer ring TLDs and 13.1 mR for the control TLD locations. The average of the annual gamma exposure readings were: 42.3 mR for the inner ring, 51.3 mR for the outer ring, and 49.6 mR for the control locations. The one on-site TLD location (1-ST) serves as an individual reference TLD. however it was evaluated along with the inner ring (site boundary) TLDs in the statistical evaluation.

In evaluating the inner ring TLDs to the control TLDs. control station 11-KZ (35 mi. SSE) had the greatest monthly and quarterly mean of 4.4 mR and 14.7 mR. respectively. 11-KZ (35 mi. SSE) had the greatest annual exposure of 53.3 mR. When the same comparison was made for the outer ring TLDs. 2-TH (Tower Hill. 5 mi. S) had the greatest monthly and quarterly mean for any location of 4.7 mR and 16.1 mR. respectively. 6-RB (Richard Bus 4.75 mi. NE) had the greatest annual exposure of 63.7 mR.

Environmental gamma doses are measured monthly, quarterly and annually by placement of 3 TLD badges per designated location. Each Teledyne TLD badge contains a 4-zone CaS0 4 wafer (the wafer also includes an additional backup/reserve readout zone). Sensitivity for the multi-zone TLDs are 1.0 millirem with a linear response of 0.1 millirem to 1000 rem.

G. Crops The collection of food crops (when in season) is a requirement of the Palisades Radiological Environmental Monitoring Program. Two principal area crops. apples and blueberries. are regularly collected as specified in the ODCM. While there are no designated locations where food crops are collected. samples are generally obtained from the same areas where the air monitoring stations are located within the ESE. SE or SSE sectors. The collection of food crops assists in verifying stack effluent deposition patterns.*

During 1995. 16 crop samples were collected from two stations (4-JS, and 5-PR). Evaluation of sample analytical results was direct.

There was no control location used.

6 Of the radionuclide analyses listed on Table HP 10.4-2. only gross beta analysis resulted in any detectable activity. The gross beta mean for the indicator locations was 1.48 pCi/g. The crop samples at station 5-PR had the greatest individual mean for gross beta activity of 1.53 pCi/g. No Palisades ODCM action or reporting levels were exceeded. nor were any special/supplemental analyses required during 1995. -

Food crop samples are required to be collected when available and in season. When collected. approximately 1 Kg of sample is placed in a sealable plastic bag for shipment to Teledyne Brown Engineering. No special treatment of the samples with a preservative is necessary.

H. Sediment A total of 10 individual sediment samples were collected from five locations during 1995. Eight sediment samples were obtained from Palisades (1-ST discharge, 31-STS ~mi South of discharge, 30-STN ~

mi North of discharge and 25-SH South Haven Beach) locations and two samples from the Ludington Control Station (32-LP).

Evaluation of the sediment analytical results was based on a data means comparison between Palisades and the Ludington control samples as well as the Palisades Offsite Dose Calculation Manual. Appendix A. reporting limits. Of the radionuclide analyses listed on Table HP 10.4-2. gross beta. and Cs-137 activity was detectable. The gross beta means for indicator and control locations were 6.4 pCi/g and 4.9 pCi/g, respectively. The Cs-137 indicator locations mean was 0.019 pCi/g. The control Cs-137 result was 0.015 pCi/g.

Location 25-SH (South Haven Beach) had the greatest mean for gross beta. No Palisades ODCM action or reporting levels were exceeded.

nor were any special/supplemental analyses required during 1995.

Sediment samples are collected semi-annually from each designated location. A one liter quantity grab sample usually is obtained off-shore. No treatment of the samples with a preservative is necessary prior to shipment to Teledyne Brown Engineering.

I. Aquatic Biota - Algae The Palisades Radiological Environmental Monitoring Program does not require algae to be collected. although it is collected when it is available. Two algae sample was collected in 1995 from the Palisades discharge (1-ST) indicator location. however. none were obtained (not available in 1995) from other indicator locations or the Ludington Plant (32-LP) control location. The required LLD for Ba/La-140 was not achieved on the June sample due to the small sample size.

The indicator analytical results were comparable to 1993 and 1994 indicator activities. The mean gross beta for 1-ST location was 4.3 pCi/g, the detectable mean Cs-137 was .019 pCi/g, no other gamma emitters were detected. In 1993 indicator gross beta and Cs-137 results were 3.4 pCi/g and .039pCi/g, in 1994 gross beta was 3.3 pCi/g, and Cs-137 was .285 pCi/g.

7 One liter quantities of algae (if available) are prepared for shipment to Teledyne Brown Engineering by treating each sample with 10 ml of a 10% formaldehyde solution for preservation.

J. Fi sh A total of eleven individual fish samples were collected from two locations during 1995. Five fish samples were obtained from Palisades Cl-ST discharge) and six samples from the Ludington Control Station (32-LP). Evaluation of the fish analytical results was based on a data means comparison between the Palisades and Ludington Control Samples as well as with the Palisades ODCM reporting limits. The gross beta means for indicator and control locations were 2.1 pCi/g and 1.8 pCi/g, respectively. The Cs-137 mean for indicator and control location were the same at 0.026 pCi/g. Comparison of results between similar species ( trout and alewife) at the different locations resulted in no significant differences. For Trout the gross beta and Cs-137 activity results were slightly higher at the control station. For Alewife, the gross beta was higher at the indicator location. No Palisades ODCM action levels or reporting levels were exceeded nor were any special analyses requested for 1995.

Fish samples are collected semi-annually. If possible, at least two different fish species Ci .e .. forage, sport fish. etc.) are sampled semi-annually at designated sample locations. When caught, a one liter quantity of fish sample is prepared for shipment to Teledyne Brown Engineering. Each sample is treated with 10 ml of a 10%

formaldehyde solution for preservation.

K. Broad Lead Vegetation No broad leaf vegetation samples were collected from the surrounding Palisades environs during 1994. The collection of broad leaf vegetation samples serves as a backup and/or alternative sampling media in case any milk sampling location(s) become(s) unavailable.

There were no problems associated with the quantity or quality of milk samples for the 1995 reporting year.

L. Non-Routine Samples None M. Gaseous and Liquid Radwaste Effluent Composite Samples Although not a direct reporting component in the Palisades Annual Radiological Environmental Operating report. results of the gaseous and liquid monthly radwaste effluent composite samples are evaluated against overall environmental trending data. This evaluation is the basis for determining isotopic dispersion and deposition patterns within the surrounding environs of Palisades. All gaseous and liquid effluent results are compared to Palisades Offsite Dose Calculation Manual. Appendix A. reporting levels. All isotopic LLDs were met.

Both the gaseous and liquid radwaste effluent composite samples are collected monthly and sent to Teledyne Brown Engineering for analysis. No special sample treatment with a preservative is

8 required prior to laboratory analysis. The liquid effluent composite sample is based on a specific amount of sample collected per total batch volume release. As noted in Enclosure A. for months in which there were no liquid batch effluent releases no sample is sent to Teledyne Brown Engineering. The gaseous radwaste effluent monthly composite sample results are based on analyzing four or five weekly stack gas filters.

III. Assessment of Palisades Operation Environmental Impact In reviewing the 1995 Palisades radiological environmental monitoring data and comparing it to previous operational and pre-operational data. all trending parameters continue to indicate that the operation of Palisades has minimal environmental impact. Most isotopic activity is at environmental background levels. Evidence of an overall environmental isotopic buildup (attributable to Plant effluents) remains negligible as well. In most instances. sample analytical results were below previously established environment background levels.

Palisades Nuclear Plant, Van Buren County, Mi. Docket 50-255 Annual Radiological Environmental Operating Report January 1 to December 31, 1995 Table HP 10.4-1 Sampling and Analysis Summary Number of Samples Frequency of Medium Description Location Collected Type of Analysis Analysis Air Continuous at 1-ST thru 12-DG 617 Gross Beta, I-131 Weekly Approx 1 CFM Lake 1 Gall on 1-ST Intake 36 Gross Beta, Gross Alpha(l), Monthly Water Composite 25-SH Raw Tritium(l) 32-LP Intake Drinking 1 Gallon 25-SH Raw 36(2,3) Gross Beta, Tritium(l) Monthly Water Composite/Grab 25-SH Treated 32-LP Intake Well 1 Gallon 1-ST Well, 8-SP, 108 Gross Beta, Tritium Monthly Water Grab 9-TP, 32-LP Well, 39-ST, 40-ST, 41-ST, 42-ST, 43-ST Milk 2 Gall on 26-FC/JC, 27-KK, 48 I-131, Cs-137, Cs-134, Monthly Grab 28-GH, 29-WS BaLa-140 TLD Continuous 1-ST thru 24-ST, 345 Gamma Monthly 33-ST thru 38-ST 111 Quarterly 25 Annual Crops Grab 4-JS, 5-PR, 16 Gross Beta, Cs-137, In Season Other Gamma Sediment Grab 1-ST, 25-SH, 30-STN 10 Gross Beta, Cs-137, Semi-Annual 31-STS, 32-LP Other Gamma Aquatic Grab 1-ST, 2 Gross beta, Cs-137 Seasonally Biota Other Gamma if available Fish Grab 1-ST, 32-LP 11 Gross Beta, Cs-137 Seasonally Other Gamma (1) Not required for 25-SH Raw (2) Same 25-SH Raw water samples as Lake Water (3) Same 32-LP Intake water samples as Lake Water

Palisades Nuclear Plant. Van Buren County. Mi. Docket 50-255 Annual Radiological Environmental Operating Report January 1 to December 31. 1995 Table HP 10.4-2 Sample Data Summary Lower Limit All All Medium or Analyses Evaluated/ of Indicator Location With Greatest Control Nonroutine Pathway Samgled Analyses Performed Detection{a} Locations Annual Mean Locations Regorts{c}

Unit of Measurement LLD Mean(b) Name Mean(b) Mean(b)

Range(b) Distance and Direction Range(b) Range(b)

Air <pCitm3> I-131 609/617 0.07 0/457 LLD N/A LLD 0/152 LLD None Gross Beta 612/617 0.01 459/459 0.022 5-PR 3.5 mi ESE 51/52 0.023 153/153 0. 022' None (0.007-0.055) (0.012-0.055) (0.011-0.039)

Lake Water (pCi/L) Gross Alpha ( f) 12112 1. 0 1112 0.5 1-ST Palisades 1112 0.5 N/A N/A None Plant Site Gross Beta 36/36 4.0 24/24 1.8 25-SH Raw 12112 1.9 12112 1.8 None9 0.4-2.5) 5.5 mi NNE (1.4-2.2) (1.3-3.0)

Tritium(f) 24/24 500.0 0112 LLD N/A 0/12 LLD 0112 LLD None Drinking Water Gross Beta 36/36 4.0 24/24(1) 1.9 25-SH Treated 12112 1.9 12/12(2) 1.8 None (pCi/L) (1.0-2.9) 5.5 mi NNE 0.0-2.9) 0.3-3.0)

Tritium(f) 24/24 500.0 2/12 158 25-SH Treated 2112 158 0/12(2) LLD None 5.5 mi NNE Well Water Gross Beta 108/108 4.0 60172 4.4 41-ST Palisades 12112 9.0 21/36 1. 7 None (pCi /U (0.8-58.7) Plant Site (1.9-58.7) (0.4-4.1)

Tritium 108/108 500.0 5172 181 1-ST Palisades 3/12 175 1/36 155 None (156-203) Plant Site (156-198)

Milk _(pCi/L) I-131 48/48 1. 0 0/36 LLD N/A LLD 0/12 LLD None Cs-137 48/48 18.0 0/36 LLD N/A LLD 0/12 LLD None Other Gamma 48/48 15.0 0/36 LLD N/A LLD 0/12 LLD None 1 * (1) 12 of these indicator samples were from the lake water media indicator location (25-SH Raw).

(2) Control samples were from the Jake water media control location (32-LP Intake).

Palisades Nuclear Plant. Van Buren County. Mi. Docket 50-255 Annual Radiological Environmental Operating Report January 1 to December 31. 1995 Table HP 10.4-2 Sample Data Summary Lower Limit All All Medium or Analyses Evaluated/ of Indicator Location With Greatest Control Nonroutine Pathway Sampled Analyses Performed Detection{a} Locations Annu9l Mean Locations Reports(c)

Unit of Measurement LLD Mean(b) Name Mean(b) Mean(b)

Range(b) Distance and Direction Range(b) Range(b)

TLD (gamma mR) TLD(month ly) (e) 2271227 1.0 191/191 3.4 11-KZ 35 mi. SSE 12112 4.4 36/36 3.9 None Inner Ring (2.3-7.4) (3.3-6.0) (2.3-6.0)

(Site Boundary) TLD(quarterly)(e) 73/73 1.0 61/61 11.2 11-KZ 35 mi. SSE 414 14.7 12112 13.1 None (9.2-13.8) (13.3-16.3) (10. 5-16. 3)

TLD(annual) 17/17 1.0 14/14 42.3 11-KZ 35 mi. SSE 111 53.3 3/3 49.6 None TLD (gamma mR) TLD(monthly) (e) 1541154 1.0 118/118 (39.1-49.3) 4.0 2-TH 5 mi S 12/12 4.7 (45.8-53.3) 36/36(3) 3.9 None e

Outer Ring (3.2-5.4) (4.0-5.4) (2.3-6.0)

TLD(quarterly)(e) 50/50 1.0 38/38 13.2 2-TH 5 mi S 414 16.1 12/12(3) 13.1 None (10.4-17 .3) (14.4-16.9) (10.5-16.3)

TLD(annual) 11/11 1.0 8/8 51.3 6-RB 4. 73 mi NE 1/1 63.7 3/3(3) 49.6 None (44.2-63.7) (45.8-53.3)

Crops Gross Beta 16/16 1.0 16116 1.48 5-PR 3.0 mi E 414 1.53 N/A None (0.78-2.4) (0.81-2.4)

Other Gamma 16116 0.05-0.10 0/16 LLD N/A LLD N/A None Sediment Gross Beta 10/10 1.0 8/8 6.4 25-SH 5.5 mi NNE 212 10.0 212 4.9 None (pCi/g dry) (4.3-12.3) (7.7-12.3) (3.8-6.0)

Cs-137 10/10 0.15 5/8 0.019 30-STN .5 mi N of 2/2 0.025 212 0.015 None (0.013-0.034) Discharge (0.016-0.034)

Other Gamma 10/10 0.05-0.15 0/8 LLD N/A LLD 012 LLD None e

(3) Same control TLDs as Inner Ring.

Palisades Nuclear Plant. Van Buren County, Mi. Docket 50-255

• Annual Radiological Environmental Operating Report January 1 to December 31. 1995 Table HP 10.4-2 Sample Data Summary Lower Limit All All Medium or Analyses Evaluated/ of Indicator Location With Greatest Control Nonroutine Pathway Sam12led Analyses Performed Detectioo(a2 Locations Annual Mean Locations ReQorts(c2 Unit of Measurement LLD Mean(b) Name Mean(b) Mean(b)

Range(b) Distance and Direction Range(b) Range(b)

Algae (pCi/g wet) Gross Beta 2/2 1. 0 2/2 4.3 1-ST Palisades 2/2 4.3 010 N/A None (2.3-6.3) Plant Site (2.3-6.3) N/A Cs-137 212 0.15 212 0.018 1-ST Palisades 2/2 0.018 010 N/A None (0.017-0.019) Plant Site 0.017-0.019)

Other Gamma 212 0.10-0.26 012 LLD N/A LLD 010 N/A None Fish (pCi/g wet) Gross Beta ll/ll 1.0 5/5 2.1 (1.6-3.2) 1-ST Palisades Plant Site 5/5 2.1 (1.6-3.2) 6/6 1.8 (1.0-2.3)

None e

Cs-137 ll/11 0.15 3/5 0.026 1-ST Palisades 1/6 0.026 5/6 0.026 None (0.006-0.041) Plant Site (0.006-0.041) (0.0ll-0.049)

Other Gamma ll/ll 0.10-0.26 0/5 LLD N/A LLD 0/6 LLD None Broadleaf Gross Beta 1. 0 No Samples Collected Vegetation(d)

(pCi/g wet) Cs-137 0.08 Other Gamma 0.05-0.10 (a) Nominal Lower Limit of Detection (LLD) as defined in MASL-300 (Rev 0/73). pages D-06-01. 02 and 03: Palisades ODCM. Appendix A. Table E-3 and vendor analytical capabilities.

(b) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specific locations is indicated next to the mean.

(c) Nonroutine reported measurements are defined in the Palisades ODCM. Appendix A.Section IV.C.

(d) Supplemental sample when milk is unavailable.

(e) Monthly TLD results are normalized for' 30 days net: Quarterly TLD results are normalized for 91 days net.

(f) Analysis not required for (25-SH) South Haven Municipal raw water.

Palisades Nuclear Plant. Van Buren County. Mi. Docket 50-255 Annual Radiological Environmental Operating Report January 1 to December 31. 1995 Table HP 10.4-3 Greatest Mean Sampling Location Medium T~ge of Anal~sis Location _High_ Low Mean Air (pCi /m3 ) I-131 LLD <0.07 Gross Beta 5-PR 3.5 mi ESE 0.055 0.012 0.023 Lake Water (pCi/L) Gross Alpha (a) 1-ST Palisades Plant Site 0.5 0.5 0.5 Gross Bet(J 25-SH 5.5 mi NNE 2.2 1.4 1.9 Tritium LLD N/A N/A N/A Drinking Water (pCi/L) Gross Beta 25-SH 5.5 mi NNE 2.9 l. 0 1. 9 Tritium 25-SH 5.5 mi NNE 158 158 158 Well Water (pCi/L) Gross Beta 41-ST Palisades Plant Site 58.7 1.9 9.0 Tritium 1-ST Palisades Plant Site 198 156 175 Milk CpCi/U I-131 LLD <1.0 Cs-137 LLD <18.0 Other Gamma LLD <15.0 TLD (Gamma-mR) TLD (Monthly) 11-KZ 35 mi SSE 6.0 3.3 4.4 Inner Ring TLD (Quarterly) 11-KZ 35 mi SSE 16.3 13.3 14.7 (Site Boundary) TLD (Annual) 11-KZ 35 mi SSE N/A N/A 53.3 TLD (Gamma-mR) TLD (Monthly) 2-TH 5 mi S 5.4 4.0 4.7 Outer Ring TLD (Quarterly) 2-TH 5 mi S 16.9 14.4 16.1 TLD (Annual) 6-RB 4.75 mi NE N/A N/A 63.7

Palisades Nuclear Plant. Van Buren County, Mi. Docket 50-255 Annual Radiological Environmental Operating Report January 1 to December 31. 1995 Table HP 10.4-3 Greatest Mean Sampling Location Medium Tyge of Analy~is Location ~ Low Mean Crops (pCi/g wet) Gross Beta 5-PR 3 mi E 2.4 O.B 1.53 Other Gamma LLD <0.05-0.10 Sediment (pCi/g dry) Gross Beta 25-SH 5.5 mi NNE 12.3 7.7 10.0 Cs-137 30-STN .5 mi N of Discharge .034 .016 0.025 Other Gamma LLD <0.05-0.15 Algae (pCi/g wet) Gross Beta 1-ST Palisades Plant Site 6.3 2.3 4.3 Cs-137 1-ST Palisades Plant Site 0.019 0.017 O.OlB Other Gamma LLD <0.10-0.26 Fish (pCi/g wet) Gross Beta 1-ST Palisades Plant Site 3.20 1.6 2.1 Cs-137 1-ST Palisades Plant Site 0.041 0.006 0.026 Other Gamma LLD <0.10-0.26 Broad Leaf Veg Gross Beta No Samples Collected (pCi/g wet) I-131 Other Gamma (a~ Gross alpha. Sr-89 and Sr-90 analysis deleted from the program during 1994

Enclosures A. Sample Collection Anomalies B. Palisades 1995 Land use Census C. Health Physics Procedure HP 10.10. "Palisades Radiological Environmental Program Sample Collection and Shipment Procedure" (with sample locations. maps. etc).

D. Palisades 1995 (Annual) Radiological Environmental Monitoring Program Data as provided by Teledyne Isotopes Midwest Laboratory, Northbrook. IL.

E. Teledyne Isotopes Midwest Laboratory EPA Interlaboratory Comparison Program Results F. Data Graphs

1. Palisades Air Particulate (gross beta) 1995 Trending and Palisades Air Particulate (gross beta) Operational Comparison Graphs. 1968-1969 (pre-op) and 1990-1995.

2. Palisades Lake Water/Drinking Water (gross beta) 1995 Trending and Palisades (gross beta) Operations Comparison Graphs. 1990-1995.

3. Palisades Well Water (gross beta) 1995 Trending and Palisades Operational Comparison Graphs 1968-1969 (pre-op) and 1990-1995.

4. Palisades TLD (gamma) 1995 Trending and Palisades Operational Comparison graphs (monthly, quarterly and annual): 1968-1969 (pre-op monthly) and 1990-1995.

5. Palisades Sediment (gross beta) 1989-1995 Trending and Palisades Operational Comparison Graphs: 1990-1995.

6. Palisades Fish (gross beta) Trending and Palisades Operational Comparison Graphs (gross beta): 1968-1969 Pre-operational/1990-1995 Operational Comparison Graph (Cs-137):