TMI-13-065, Annual Radiological Groundwater Protection Program Report (Argppr), 1 January Through 31 December 2012

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Annual Radiological Groundwater Protection Program Report (Argppr), 1 January Through 31 December 2012
ML13121A079
Person / Time
Site: Three Mile Island  Constellation icon.png
Issue date: 04/30/2013
From:
Teledyne Brown Engineering Environmental Services
To:
Office of Nuclear Reactor Regulation, Exelon Generation Co
References
TMI-13-065
Download: ML13121A079 (43)
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Docket No: 50-289 50-320 THREE MILE ISLAND NUCLEAR STATION UNITS 1 and 2 Annual Radiological Groundwater Protection Program Report (ARGPPR) 1 January Through 31 December 2012 Prepared By Teledyne Brown Engineering Environmental Services SExeton Generation, Three Mile Island Nuclear Station Middletown, PA 17057 April 2013

Table Of Contents I. Sum m ary and Conclusions .......................................................................................... 1 I1. Introduction ............................................................................................................. 3 A. O bjectives of the RG PP .................................................................................. 3 B. Im plem entation of the O bjectives .................................................................. 4 C. Program Description ....................................................................................... 4 D. Characteristics of Tritium (H-3) ...................................................................... 5 Ill. Program Description ................................................................................................ 6 A. Sam ple Analysis ............................................................................................ 6 B. Data Interpretation .......................................................................................... 7 IV. Results and Discussion ............................................................................................ 8 A. G roundwater Results ..................................................................................... 8 B. Surface Water Results .................................................................................. 9 C. Storm W ater Results ..................................................................................... 10 D. Precipitation W ater Results ......................................................................... 11 E. Leaks, Spills, and Releases ......................................................................... 11 F. Actions Taken ............................................................................................. 12 i

Appendices Appendix A Location Designation Tables Table A-1 Radiological Groundwater Protection Program - Sampling Locations, Distance and Direction, Three Mile Island Nuclear Station, 2012 Figures Figure A-1 Sampling Locations at the Three Mile Island Nuclear Station, 2012 Appendix B Data Tables Tables Table B-1.1 Concentrations of Tritium, Strontium, Gross Alpha, and Gross Beta in Groundwater Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

Table B-1.2 Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Three Mile Island Nuclear Station, 2012.

Table B-1.3 Concentrations of Hard-To-Detects in Groundwater Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Generating Station, 2012.

Table B-11.1 Concentrations of Tritium in Surface Water Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

Table B-11.2 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Three Mile Island Nuclear Station, 2012.

Table B-Ill.1 Concentrations of Tritium in Storm Water Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

Table B-Ill.2 Concentrations of Gamma Emitters in Storm Water Samples Collected in the Vicinity of Three Mile Island Nuclear Station, 2012.

Table B-IV.1 Concentrations of Tritium in Precipitation Water Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

ii

Appendix C Data Tables Tables Table C-1.1 Concentrations of Tritium, Strontium, Gross Alpha and Gross Beta in Groundwater Split Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

Table C-1.2 Concentrations of Gamma Emitters in Groundwater Split Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

Table C-1.3 Concentrations of Hard-To-Detects in Groundwater Split Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Generating Station, 2012.

Table C-I1.1 Concentrations of Tritium in Surface Water Split Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

Table C-11.2 Concentrations of Gamma Emitters in Surface Water Split Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

Table C-111.1 Concentrations of Tritium in Precipitation Water Split Samples Collected as Part of the Radiological Groundwater Protection Program, Three Mile Island Nuclear Station, 2012.

iii

I. Summary and Conclusions In 2006, Exelon instituted a comprehensive program to evaluate the impact of station operations on groundwater and surface water in the vicinity of Three Mile Island Nuclear Station. At Three Mile Island Nuclear, 31 new permanent groundwater monitoring wells were installed in 2006. The results for all TMI wells are included in this report. This report covers groundwater, surface water, storm water and precipitation samples collected from the environment, both on and off station property in 2012. During that time period 618 analyses were performed on 354 samples from 59 locations.

In assessing all the data gathered for this report, it was concluded that the operation of Three Mile Island Nuclear Station had no adverse radiological impact on the environment.

Gamma-emitting radionuclides associated with licensed plant operations were not detected at concentrations greater than their respective Lower Limits of Detection (LLDs) as specified in the Offsite Dose Calculation Manual (ODCM) in any of the groundwater, surface water, storm water and precipitation samples. In the case of tritium, Exelon specified that its laboratories achieve a lower limit of detection 10 times lower than that required by federal regulation.

Strontium-89/90 was not detected at a concentration greater than the LLD of 1.0 picoCurie per liter (pCi/L) in the groundwater samples tested.

Tritium was not detected in any groundwater, surface water, storm water or precipitation water samples at concentrations greater than the United States Environmental Protection Agency (USEPA) drinking water standard (and the Nuclear Regulatory Commission Reporting Limit) of 20,000 pCi/L. Low levels of tritium were detected at concentrations greater than the LLD of 200 pCi/L in 32 of 50 groundwater monitoring locations. The groundwater tritium concentrations ranged from 179 +/- 113 pCi/L to 12,100 + 1,250 pCi/L. Tritium that was detected in groundwater at the Station is believed to be the result of a potential leak, historical releases, the recapture of gaseous tritium releases via rainwater and/or background from external sources greater than 200 pCi/L. Tritium was detected in four of five precipitation water locations. The concentration ranged from 173 +

112 to 2,070 +/- 272 pCi/L. Tritium was not detected at any surface water location. Tritium was detected in three storm water samples. The concentrations ranged from 197 +/- 124 to 358 +/- 134 pCi/L.

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions were performed on groundwater samples during the second quarter sampling in 2012. Gross Alpha (dissolved) was detected in 2 of the 31 groundwater locations. The concentrations were 0.7 and 1.5 pCi/L. Gross Alpha (suspended) was detected in three of 31 groundwater locations. The concentrations ranged from 0.9 to 4.9 pCi/L. Gross Beta (dissolved) was detected in 24 of 31 groundwater locations. The concentrations ranged from 1.5 to 10.4 pCi/L.

Gross Beta (suspended) was detected in 2 of 31 groundwater locations. The concentrations were 2.6 and 2.8 pCi/L.

Hard-To-Detect analyses were performed on a select group of groundwater locations to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235 and U-238.

The isotopes of U-234 and U-238 were detected in one of three groundwater monitoring locations. The U-234 isotope had a concentration of 0.4 pCi/L and the U-238 isotope had a concentration of 0.3 pCi/L. The levels detected are from naturally occurring isotopes and are considered background.

All other hard-to-detect nuclides were not detected at concentrations greater than their respective MDCs. The concentrations detected are from naturally occurring isotopes and are considered background.

II. Introduction The Three Mile Island Nuclear Station (TMINS) established a revised and more comprehensive groundwater monitoring program in 2006 as part of an Exelon Nuclear fleetwide assessment.

Conestoga Rovers & Associates (CRA) performed the initial assessment. CRA prepared a Hydrogeologic Investigation Report (HIR) for Exelon to determine whether groundwater at and near TMINS has been adversely impacted by any releases of radionuclides. The CRA report documents the results of the May 2006 Hydrogeologic Investigation Work Plan. CRA assessed groundwater quality at the Station and identified locations designated as Areas for Further Evaluation. The results and conclusions of this Phase 1 study were made available to state and federal regulators, as well as the public on an Exelon web site for station specific reports.

As a result of the Phase 1 study, the Radiological Groundwater Protection Program (RGPP) was revised to a long term monitoring program. This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Environmental Inc. (Midwest Labs) on well water, surface water, precipitation water and storm water samples collected in 2012. TMINS groundwater movement is into the Susquehanna River which surrounds the station on all sides.

This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Environmental Inc. (Midwest Labs) on samples collected in 2012.

A. Objective of the RGPP The long-term objectives of the Radiological Groundwater Protection Program (RGPP) are as follows:

1. Identify suitable locations to monitor and evaluate potential impacts from station operations before significant radiological impact to the environment and potential drinking water sources.
2. Understand the local hydrogeologic regime in the vicinity of the station and maintain up-to-date knowledge of flow patterns on the surface and shallow subsurface.
3. Perform routine water sampling and radiological analysis of water from selected locations.
4. Notify stakeholders in a timely manner for new leaks, spills, or other detections with potential radiological significance.
5. Regularly assess analytical results to identify adverse trends.
6. Take necessary corrective actions to protect groundwater resources.

B. Implementation of the Objectives The objectives identified have been implemented at Three Mile Island Nuclear Station as discussed below:

1. Three Mile Island Nuclear Station continues to sample and monitor the groundwater at the station in accordance with station procedures.

Sample frequencies and locations are adjusted based on monitoring results and investigations.

2. The Three Mile Island Nuclear Station reports describe the local hydrogeologic regime. Periodically, the flow patterns on the surface and shallow subsurface are updated based on ongoing measurements.
3. Three Mile Island Nuclear Station will continue to perform routine sampling and radiological analysis of water from selected locations.
4. Three Mile Island Nuclear Station has implemented procedures to identify and report leaks, spills, or other detections with potential radiological significance in a timely manner.
5. Three Mile Island Nuclear Station staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.

C. Program Description

1. Sample Collection Sample locations can be found in Table A-1 and Figures A-1 and A-2, Appendix A.

Groundwater, Surface Water, Storm Water, and Precipitation Samples of water are collected, managed, transported and analyzed in accordance with approved procedures. Groundwater, surface water, storm water and precipitation are collected. Sample locations, sample collection frequencies and analytical frequencies are controlled in accordance with approved station procedures.

Contractor and/or station personnel are trained in the collection, preservation management and shipment of samples, as well as in documentation of sampling events. For split samples, collectors will periodically collect samples that are sent to Midwest Labs to confirm that TBE is producing comparable data. Analytical laboratories are subject to internal quality assurance programs, industry cross-check programs, as well as nuclear industry audits.

Station personnel review and evaluate all analytical data deliverables as data are received.

Analytical data results are reviewed by both station personnel and an independent hydrogeologist for adverse trends or changes to hydrogeologic conditions.

D. Characteristics of Tritium (H-3)

Tritium (chemical symbol H-3) is a radioactive isotope of hydrogen. The most common form of tritium is tritium oxide, which is also called "tritiated water." Tritiated water behaves chemically and physically like non-tritiated water in the subsurface, and therefore tritiated water will travel at the same velocity as the average groundwater velocity.

Tritium is created in the environment from naturally occurring processes both cosmic and subterranean, as well as from anthropogenic (i.e., man-made) sources. Tritium is produced naturally in the upper atmosphere when cosmic rays strike air molecules. This "cosmogenic" tritium combines with oxygen to form tritiated water, which will then enter the hydrologic cycle. Below ground, "lithogenic" tritium is produced by the bombardment of natural lithium present in crystalline rocks by neutrons produced by the radioactive decay of naturally abundant uranium and thorium. Lithogenic production of tritium is usually negligible compared to other sources due to the limited abundance of lithium in rock. The lithogenic tritium is introduced directly to groundwater.

A major anthropogenic source of tritium and strontium-90 comes from the former atmospheric testing of thermonuclear weapons. Levels of tritium in precipitation increased significantly during the 1950s and early 1960s and later with additional testing, resulting in the release of significant amounts of tritium to the atmosphere. The Canadian heavy water nuclear power reactors, other commercial power reactors, nuclear research and weapons production continue to influence tritium concentrations in the environment.

The chemical properties of tritium are essentially those of ordinary hydrogen. Tritium can be taken into the body by drinking water, breathing air, eating food, or absorption through skin. Once tritium enters the body, it disperses quickly and is uniformly distributed throughout the body.

Tritium is excreted primarily through urine with a clearance rate characterized by an effective biological half-life of about 14 days. Within one month or so after ingestion, all tritium is essentially cleared.

Organically bound tritium (tritium that is incorporated in organic compounds) can remain in the body for a longer period.

Tritium has a radiological half-life of approximately 12.3 years. It decays spontaneously to helium-3 (He-3). This radioactive decay releases a beta particle (low-energy electron). The radioactive decay of tritium is the source of the health risk from exposure to tritium. Tritium is one of the least dangerous radionuclides, because it emits very weak radiation and leaves the body relatively quickly. Since tritium is almost always found as water, it goes directly into soft tissues and organs. The associated dose to these tissues is generally uniform and is dependent on the water content of the specific tissue.

Ill. Program Description A. Sample Analysis This section describes the general analytical methodologies used by TBE and Midwest Labs to analyze the environmental samples for radioactivity for the Three Mile Island Nuclear Station RGPP in 2012.

In order to achieve the stated objectives, the current program includes the following analyses:

1. Concentrations of gamma emitters in groundwater, surface water and storm water.
2. Concentrations of strontium in groundwater.
3. Concentrations of tritium in groundwater, surface water, precipitation water and storm water.
4. Concentrations of Am-241 in groundwater.
5. Concentrations of Cm-242 and Cm-243/244 in groundwater.
6. Concentrations of Pu-238 and PU-239/240 in groundwater.
7. Concentrations of U-234, U-235 and U-238 in groundwater.
8. Concentrations of Fe-55 in groundwater.
9. Concentrations of Ni-63 in groundwater.
10. Concentrations of Gross Alpha and Gross Beta (Dissolved and Suspended) in groundwater.

B. Data Interpretation

1. Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) is specified by federal regulation as a minimum sensitivity value that must be achieved routinely by the analytical parameter.
2. Laboratory Measurements Uncertainty The estimated uncertainty in measurement of tritium in environmental samples is frequently on the order of 50% of the measurement value.

Statistically, the exact value of a measurement is expressed as a range with a stated level of confidence. The convention is to report results with a 95% level of confidence. The uncertainty comes from calibration standards, sample volume or weight measurements, sampling uncertainty and other factors. Exelon reports the uncertainty of a measurement created by statistical process (counting error).

Analytical uncertainties are reported at the 95% confidence level in this report for reporting consistency with the AREOR.

Gamma spectroscopy results for each type of sample were grouped as follows:

For groundwater, surface water, and storm water 13 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-1 34, Cs-1 37, Ba-140 and La-140 were reported.

The radio-analytical laboratory is counting tritium results to an LLD of 200 pCi/L. Typically, the lowest positive measurement will be reported within a range of 40 - 240 pCi/L or 140 +/- 100 pCi/L.

Clearly, these sample results cannot be distinguished as different from background at this concentration.

IV. Results and Discussion A. Groundwater Results Samples were collected from on and off-site wells in accordance with the station radiological groundwater protection program.

Analytical results and anomalies are discussed below.

Tritium Samples from 50 locations were analyzed for tritium activity. Tritium values ranged from the detection limit to 12,100 pCi/L (Table B-1.1, Appendix B).

Tritium Split Samples Tritium values ranged from 164 tol0,153 pCi/L (Table C-1.1, Appendix C).

Strontium Strontium-90 was not detected above the required detection limit of 1.0 pCi/L (Table B-1.1, Appendix B).

Strontium Split Samples Strontium-89 and Strontium-90 were not detected above the required detection limit (Table C-1.1, Appendix C).

Gross Alpha and Gross Beta (dissolved and suspended)

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions were performed on groundwater water samples during the second sampling in 2012. Gross Alpha (dissolved) was detected in two of the 31 groundwater locations.

The concentrations were 0.7 and 1.5 pCi/L. Gross Alpha (suspended) was detected in three of 31 groundwater locations.

The concentrations ranged from 0.9 to 4.9 pCi/L. Gross Beta (dissolved) was detected in 24 of 31 groundwater locations. The concentrations ranged from 1.5 to 10.4 pCi/L. Gross Beta (suspended) was detected in two of 31 groundwater locations. The concentrations were 2.6 and 2.8 pCi/L (Table B-1.1, Appendix B).

Gross Alpha and Gross Beta (dissolved and suspended) Split Samples Three split samples were analyzed for Gross Alpha and Gross Beta (dissolved and suspended) in 2012. Gross Alpha was not detected above the required detection limit. Gross beta was detected in all three sample analyzed. The concentrations ranged from 1.9 to 2.3 pCi/L (Table C-1.1, Appendix C).

Gamma Emitters Potassium-40 was detected in three of 67 samples with concentrations ranging from 40 pCi/L to 324 pCi/L. No other gamma-emitting nuclides were detected (Table B-1.2, Appendix B).

Gamma Emitters Split Samples Six locations were analyzed for gamma-emitting nuclides in 2012.

No gamma-emitting nuclides were detected in any split samples (Table C-1.2, Appendix C).

Hard-To-Detect Hard-To-Detect analyses were performed on a select group of groundwater locations to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235 and U-238. The isotopes of U-234 and U-238 were detected in one of three groundwater monitoring locations. The U-234 isotope had a concentration of 0.37 pCi/L and the U-238 isotope had a concentration of 0.27 pCi/L. The concentrations detected are from naturally occurring isotopes and are considered background (Table B-1.3, Appendix B).

Hard-To-Detect Split Samples Hard to detects were not analyzed on any split samples in 2012 (Table C-1.3, Appendix C).

B. Surface Water Results Samples were collected from surface water locations in accordance with the station radiological groundwater protection program.

Analytical results and anomalies are discussed below.

Tritium Three locations were analyzed for tritium in 2012. Tritium was not detected above the required detection limit of 200 pCi/L in any of the 14 samples analyzed (Table B-11.1, Appendix B).

Tritium Split Samples One location was analyzed for tritium was analyzed in 2012. Tritium was not detected above the required detection limit (Table C-I1.1, Appendix C).

Strontium Surface water samples were not analyzed for Sr-90 in 2012 (Table B-11.1, Appendix B).

Gamma Emitters Three locations were analyzed for gamma-emitting nuclides in 2012. None of the four samples detected gamma-emitting nuclides (Table B-11.2, Appendix B).

Gamma Emitters Split Samples One location was analyzed for gamma-emitting nuclides in 2012.

No gamma emitting nuclides were detected (Table C-11.2, Appendix C).

C. Storm Water Results Samples were collected from storm water locations in accordance with the station radiological groundwater protection program.

Analytical results and anomalies are discussed below.

Tritium One location was analyzed for tritium. Tritium was detected in three samples above the required detection limit of 200 pCi/L. The concentrations ranged from 197 to 358 pCi/L (Table B-1l11.,

Appendix B).

Gamma Emitters Samples from one location were analyzed for gamma-emitting nuclides. Potassium-40 was detected in one of four samples with a concentration of 50 pCi/L. No other gamma emitting nuclides were detected (Table B-Ill.2, Appendix B).

D. Precipitation Water Results Samples were collected at five locations. The following analyses were performed:

Tritium Samples from five locations were analyzed for tritium activity. Tritium activity was detected at four of five locations. The concentrations ranged from 173 to 2070 pCi/L (Table B-IV.1, Appendix B).

Tritium Split Samples Samples from two locations were analyzed for tritium activity. Tritium activity was detected in three of four samples. The concentrations ranged from 185 to 310 pCi/L (Table C-I11.1, Appendix C).

Gamma Emitters Precipitation water was not analyzed for Gamma Emitters in 2012 (Table B-IV.2, Appendix B).

Gamma Emitters Split Samples No gamma-emitting nuclides were analyzed in 2012 (Table C-111.2, Appendix C).

E. Leaks, Spills, and Releases A potential leak was identified at TMI in 2012 due to elevated MS-22 tritium concentration readings. TMI continues to monitor MS-22 and surrounding wells, in addition to tritium plumes from previous years and reports the activity and dose to the public in the ARRER. The elevated MS-22 well tritium concentrations were voluntarily reported under the reporting requirements for the NEI Groundwater Protection Initiative (GPI) as implemented in Exelon's Reportability procedure LS-AA-1120, RAD 1.34.

F. Actions Taken

1. Compensatory Actions TMI continues to monitor groundwater radioactivity as part of the on-going investigation into the potential leak. A Tritium Response Team was assembled and investigated numerous possible causes. The leak has not been identified to date, but additional wells are being planned for installation to help isolate the area of the leak. TMI has an extensive groundwater monitoring program with over 50 monitoring wells. Only MS-22 has seen elevated tritium levels from this potential leak. No gamma activity or hard-to-detects have been identified in MS-22.

APPENDIX A LOCATION DESIGNATION & DISTANCE

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations and Distance, Three Mile Island Nuclear Station, 2012 Site Site Type

  1. 3 Monitoring Well 48N Monitoring Well 48S Production Potable Well E1-2 Monitoring Well, Offsite EDCB Storm Water GP-12 Monitoring Well GP-6 Monitoring Well GP-8 Monitoring Well GP-9 Monitoring Well MS-1 Monitoring Well MS-19 Monitoring Well MS-2 Monitoring Well MS-20 Monitoring Well MS-21 Monitoring Well MS-22 Monitoring Well MS-3 Monitoring Well MS-4 Monitoring Well MS-5 Monitoring Well MS-6 Monitoring Well MS-7 Monitoring Well MS-8 Monitoring Well MW-1 Monitoring Well MW-2 Monitoring Well MW-3 Monitoring Well MW-4 Monitoring Well N2-1 Monitoring Well, Offsite NW-A Production Well NW-B Production Well NW-C Production Well NW-CW Clearwell OS- 13B Monitoring Well OS-14 Monitoring Well OS-16 Monitoring Well OS-17 Monitoring Well OS-18 Monitoring Well OSF Production Potable Well RW-1 Monitoring Well RW-2 Monitoring Well SW-E-1 Surface Water SW-E-2 Surface Water SW-E-3 Surface Water MW-TMI-9S* Monitoring Well MW-TMI-10D Monitoring Well MW-TMI-101 Monitoring Well MW-TMI-10S Monitoring Well MW-TMI-11S* Monitoring Well MW-TMI-12S Monitoring Well MW-TMI-131 Monitoring Well MW-TMI-13S Monitoring Well MW-TMI-14D Monitoring Well MW-TMI-141 Monitoring Well MW-TMI-14S Monitoring Well MW-TMI-16D Monitoring Well MW-TMI-161 Monitoring Well TM-PR-ESE Precipitation Water TM-PR-MS-1 Precipitation Water TM-PR-MS-2 Precipitation Water TM-PR-MS-20 Precipitation Water TM-PR-MS-22 Precipitation Water TM-PR-MS-4 Precipitation Water TM-PR-NW-B Precipitation Water A-1

TABLE A-I: Radiological Groundwater Protection Program - Sampling Locations and Distance, Three Mile Island Nuclear Station, 2012 Site Site Type MW-TMI-17D Monitoring Well MW-TMI-171 Monitoring Well MW-TMI-18D Monitoring Well MW-TMI-19D Monitoring Well MW-TMI-191 Monitoring Well MW-TMI-1D Monitoring Well MW-TMI-2D Monitoring Well MW-TMI-31 Monitoring Well MW-TMI-41 Monitoring Well MW-TMI-4S Monitoring Well MW-TMI-5D Monitoring Well MW-TMI-6D Monitoring Well MW-TMI-61 Monitoring Well MW-TMI-7S Monitoring Well MW-TMI-8S Monitoring Well MW-TMI-91 Monitoring Well MW-TMI-9S Monitoring Well TRAINING CENTER Offsite Monitoring Well

  • NO WATER PRESENT TO SAMPLE A-2

Figure A - 1 Sampling Locations at the Three Mile Island Nuclear Station, 2012 A-3

Intentionally left blank APPENDIX B DATA TABLES

TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM-90, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE 3 01/31/12 < 197 3 05/02/12 < 193 < 0.5 < 0.6 < 0.4 2.2 +/- 0.8 < 1.7 3 07/24/12 < 167 3 10/16/12 < 175 48S 01/30/12 < 166 48S 04/30/12 < 169

  • 0.5
  • 1.6
  • 0.6 < 1.8 < 1.7 48S 07/09/12 < 189 48S 07/25/12 < 179 48S 08/23/12 < 183 48S 09/17/12 < 174 48S 10/17/12 < 180 48S 10/17/12 < 196 48S 11/12/12
  • 175 48S 12/10/12
  • 180 MS-1 02/01/12 < 187 MS-1 04/30/12 < 183 < 0.7 < 1.6 < 0.5 < 2.2
  • 1.5 MS-1 07/24/12 205 +/- 122 MS-1 10/16/12 200 +/- 121 MS-19 02/01/12 < 190 MS-19 04/30/12 215 +/- 126 < 0.7 < 0.7 * < 0.6 2.4 +/- 0.8 < 1.7 MS-19 07/25/12 < 184 MS-19 10/16/12
  • 179 MS-2 01/31/12 595 +/- 146 MS-2 01/31/12 625 +/- 145 MS-2 05/01/12 385 +/- 134 < 0.6 < 0.7 < 0.4 4.2 +/- 0.9 < 1.6 MS-2 07/24/12 272 +/- 116 MS-2 10/16/12 336 +/- 141 MS-20 01/31/12 1660 +/- 216 MS-20 05/01/12 664 +/- 138 < 0.6 < 0.9 < 0.6 5.1 +/- 1.1 < 1.7 MS-20 05/01/12 589 +/- 130 < 0.7 < 1.0 < 0.6 4.6 +/- 1.1 < 1.7 MS-20 07/09/12 1000 +/- 166 MS-20 07/12/12 858 +/- 163 MS-20 07/16/12 901 +/- 144 MS-20 07/19/12 907 +/- 149 MS-20 07/23/12 861 +/- 144 MS-20 07/26/12 820 +/- 161 MS-20 07/30/12 680 +/- 154 MS-20 08/02/12 850 +/- 156 MS-20 08/06/12 738 +/- 142 MS-20 08/09/12 719 +/- 157 MS-20 08/13/12 730 +/- 145 MS-20 08/16/12 725 +/- 139 MS-20 08/20/12 879 +/- 151 MS-20 08/23/12 550 +/- 140 MS-20 08/27/12 699 +/- 153 MS-20 08/30/12 805 +/- 145 MS-20 09/04/12 594 +/- 149 MS-20 09/07/12 748 +/- 141 MS-20 09/10/12 884 +/- 159 MS-20 09/13/12 783 +/- 132 MS-20 09/17/12 763 +/- 183 MS-20 09/20/12 823 +/- 143 B-1

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM-90, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA SITE COLLECTION H-3 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE MS-20 09/24/12 637 +/- 140 MS-20 09/27/12 600 +/- 145 MS-20 10/01/12 721 +/- 145 MS-20 10/08/12 549 +/- 145 MS-20 10/15/12 559 +/- 136 MS-20 10/22/12 534 +/- 138 MS-20 10/30/12 641 +/- 163 MS-20 11/05/12 611 +/- 131 MS-20 11112/12 534 +/- 126 MS-20 11/19/12 828 +/- 160 MS-20 11/26/12 647 +/- 164 MS-20 12/03/12 698 +/- 155 MS-20 12/10/12 444 +/- 134 MS-20 12/17/12 519 +/- 126 MS-20 12/24/12 533 +/- 131 MS-20 12/31/12 617 +/- 178 MS-21 01/31/12 210 +/- 113 MS-21 01/31/12 197 +/- 111 MS-21 05/03/12 < 189

  • 0.5
  • 0.7 < 0.4 2.3 +/- 0.8 < 1.5 MS-21 07/25/12 252 +/- 119 MS-21 10/16/12 265 +/- 125 MS-22 02/01/12 670 +/- 147 MS-22 02/01/12 Rea ~nalysis 798 +/- 162 MS-22 05/02/12 5350 +/- 591
  • 0.6
  • 0.7 < 0.4 5.2 +/- 0.9 < 1.6 MS-22 05/02/12 Rec :ount 5380 +/- 591 MS-22 05/02/12 Rea inalysis 5120 +/- 565 MS-22 07/09/12 9570 +/- 1000 MS-22 07/09/12 9680 +/- 1010 MS-22 07/12/12 9020 +/- 946 MS-22 07/16/12 11800 +/- 1210 MS-22 07/19/12 12100 +/- 1250 MS-22 07/23/12 1060 +/- 159 MS-22 07/23/12 1030 +/- 171 MS-22 07/24/12 982 +/- 169 MS-22 07/26/12 1910 +/- 251 MS-22 07/30/12 1590 +/- 222 MS-22 08/02/12 864 +/- 156 MS-22 08/02/12 Reaanalysis 989 +/- 157 MS-22 08/06/12 487 +/- 129 MS-22 08/09/12 2870 +/- 342 MS-22 08/13/12 5940 +/- 645 MS-22 08/16/12 1490 +/- 204 MS-22 08/20/12 5450 +/- 590 MS-22 08/20/12 Reaanalysis 4880 +/- 545 MS-22 08/23/12 6110 +/- 665 MS-22 08/27/12 8330 +/- 878 MS-22 08/30/12 9220 +/- 956 MS-22 09/04/12 11000 +/- 1150 < 0.6 MS-22 09/07/12 8330 +/- 877 MS-22 09/10/12 5770 +/- 610 MS-22 09/13/12 3500 +/- 386 MS-22 09/17/12 5880 +/- 643 B-2

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM-90, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER t 2 SIGMA SITE COLLECTION H-3 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE MS-22 09/20/12 1210 +/- 170 MS-22 09/24/12 3250 +/- 374 MS-22 09/27/12 4030 +/- 460 MS-22 10/01/12 2050 +/- 256 MS-22 10/08/12 2770 +/- 337 MS-22 10/15/12 5600 +/- 607 MS-22 10/22/12 989 +/- 162 MS-22 10/30/12 2460 +/- 292 MS-22 11/05/12 2760 +/- 319 MS-22 11/12/12 3870 +/- 428 MS-22 11/19/12 5020 +/- 546 MS-22 11/26/12 5400 +/- 579 MS-22 12/03/12 4830 +/- 527 MS-22 12/10/12 5540 +/- 606 MS-22 12/17/12 2870 +/- 334 MS-22 12/24/12 879 +/- 147 MS-22 12/31/12 1380 +/- 186 MS-3 02/01/12 271 +/- 129 MS-3 05/03112 383 +/- 136

  • 0.5 < 0.9 0.9 +/- 0.6 6.7 +/- 1.1 < 1.5 MS-3 07/24112 390 +/- 123 MS-3 10/16/12 433 +/- 149 MS-4 05/02/12 278 +/- 130 MS-5 01/31/12 < 196 MS-5 05/01 [12 < 189 < 0.6 < 0.7 < 0.4 5.5 +/- 1.0 < 1.6 MS-5 07/24/12
  • 170 MS-5 10/16/12
  • 192 MS-5 10/16/12
  • 198 MS-7 01/31/12 < 199 MS-7 05/01/12
  • 184 < 0.6
  • 0.4 < 0.5 < 1.2 < 1.5 MS-7 07/25/12 < 176 MS-7 07/25/12
  • 167 MS-7 10/17/12
  • 174 MS-8 01/31/12 290 +/- 134 MS-8 05/01/12 193
  • 0.6 < 0.7 4.9 +/- 1.3 4.8 +/- 1.0 2.8 +/- 1.2 MS-8 07/09/12 377 +/- 136 MS-8 07/23/12 403 +/- 120 MS-8 08/06/12 381 +/- 123 MS-8 08/20/12 363 +/- 123 MS-8 09/04/12 279 +/- 134 MS-8 09/17/12 277 +/- 124 MS-8 10/01/12 338 +/- 124 MS-8 10/17/12 307 +/- 140 MS-8 10/30/12 410 +/- 146 MS-8 11/12/12 321 +/- 115 MS-8 11/26/12 343 +/- 144 MS-8 12110/12 238 +/- 121 MS-8 12/24/12 226 +/- 116 MW-i 05/02/12
  • 193 MW-2 05/02/12
  • 184 MW-TMI-10D 01/31/12 221 +/- 112 MW-TMI-10D 05/01/12 228 +/- 124 MW-TMI-10D 07/24/12 222 +/- 114 B-3

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM-90, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE MW-TMI-10D 10/17/12 398 +/- 145 MW-TMI-101 01/31/12 1540 +/- 205 MW-TMI-101 05/01/12 1270 +/- 183 < 0.6 < 0.6

  • 0.5 2.9 +/- 1.0 < 1.5 MW-TMI-101 07/24/12 1320 +/- 188 MW-TMI-101 10/17/12 1190 +/- 195 MW-TMI-101 10/17/12 1040 +/- 188 MW-TMI-10S 01/31/12 1560 +/- 208 MW-TMI-10S 05/01/12 2060 +/- 258 <0.5 <0.9
  • 0.7 6.5 +/- 1.6 2.6 +/- 1.4 MW-TMI-10S 07/24/12 2260 +/- 278 MW-TMI-10S 10/17/12 1840 +/- 238 MW-TMI-12S 01/31/12 < 166 MW-TMI-12S 05/02/12 < 192 <0.5 <0.5 < 0.4 6.0 +/- 0.9 < 1.6 MW-TMI-12S 07/25/12 < 195 MW-TMI-12S 10/17/12 325 +/- 140 MW-TMI-131 01/31/12 < 187 MW-TMI-131 05/02/12 195 +/- 127 MW-TMI-131 07/24/12 < 193 MW-TMI-131 07/24/12 266 +/- 116 MW-TMI-131 10/16/12 255 +/- 125 MW-TMI-13S 01/31/12 < 186 MW-TMI-13S 05/02/12 < 192 <0.6 <0.9 < 0.4 6.5 +/- 1.0 < 1.5 MW-TMI-13S 07/24/12 < 186 MW-TMI-13S 10/16/12 309 +/- 126 MW-TMI-14D 02/01/12 614 +/- 145 MW-TMI-14D 02/01/12 537 +/- 141 MW-TMI-14D 04/30/12 387 +/- 124 MW-TMI-14D 07/25/12 387 +/- 124 MW-TMI-14D 10/16/12 309 +/- 127 MW-TMI-141 02/01/12 < 187 MW-TMI-141 04/30/12 193 +/- 127 MW-TMI-141 04/30/12 < 168 MW-TMI-141 07/25/12 329 +/- 121 MW-TMI-141 10/16/12
  • 177 MW-TMI-14S 02/01/12 < 190 MW-TMI-14S 04/30/12 221 +/- 127 <0.7 <0.7 < 0.6 2.2 +/- 0.8 < 1.7 MW-TMI-14S 07/25/12
  • 171 MW-TMI-14S 10/16/12
  • 180 MW-TMI-16D 02/01/12 331 +/- 135 MW-TMI-16D 04/30/12 327 +/- 130 MW-TMI-16D 07/24/12 418 +/- 126 MW-TMI-16D 10/16/12 571 +/- 155 MW-TMI-161 02/01/12 < 190 MW-TMI-161 04/30/12 < 183 MW-TMI-161 07/24/12 413 +/- 126 MW-TMI-161 10/16/12 268 +/- 123 MW-TMI-171 04/30/12 < 182 MW-TMI-18D 05/02/12 < 179 MW-TMI-191 05/01/12 < 178 MW-TMI-1D 05/02/12 316 +/- 131 MW-TMI-2D 01/31/12 < 195 MW-TMI-2D 05/02/12 290 +/- 127 < 0.7 0.7 +/- 0.4 < 0.5 2.5 +/- 0.8 < 1.5 MW-TMI-2D 05/02/12 251 +/- 125 < 0.7 < 0.7 < 0.6 3.2 +/- 0.8 < 1.7 B-4

TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM-90, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE I

MW-TMI-2D 07/24/12 < 170 MW-TMI-2D 10/16/12 291 +/- 139 MW-TMI-31 02/01/12

  • 188 MW-TMI-31 05/02/12 213 +/- 121 < 0.7 < 1.7 < 0.6 4.6 +/- 1.3 < 1.7 MW-TMI-31 07/09/12 < 185 MW-TMI-31 07/23/12 316 +/- 116 MW-TMI-31 08/06/12 255 +/- 116 MW-TMI-31 08/20/12 304 +/- 121 MW-TMI-31 09/04/12 208 +/- 129 MW-TMI-31 09/17/12 302 +/- 123 MW-TMI-31 10/01/12 318 +/- 125 MW-TMI-31 10117/12 221 +/- 121 MW-TMI-31 10/30/12 < 190 MW-TMI-31 11/12/12 < 165 MW-TMI-31 11/26/12
  • 193 MW-TMI-31 12/10/12 377 +/- 130 MW-TMI-31 12/24/12
  • 169 MW-TMI-41 04/30/12 < 186 MW-TMI-4S 04/30112
  • 182 MW-TMI-6D 01/31/12
  • 195 MW-TM I-6D 05/01/12 255 +/- 125 < 0.6 1.5 +/- 0.7 < 0.5 < 1.5 < 1.5 MW-TMI-6D 07/25/12 197 +/- 116 MW-TMI-6D 10/17/12 < 188 MW-TMI-61 01/31/12
  • 195 MW-TMI-61 05/01/12 < 180 < 0.6 < 1.2 2.8 +/- 0.8 < 3.3 < 2.3 MW-TMI-61 07/25/12 < 194 MW-TMI-61 10/17/12 < 191 MW-TMI-7S 05/01/12 < 188 MW-TMI-8S 05/01/12 < 178 MW-TMI-8S 05/01/12 222 +/- 126 MW-TMI-91 05/01/12 < 185 NW-A 02/03/12 644 +/- 139 NW-A 04/30/12 603 +/- 144 < 0.6
  • 1.0
  • 0.4 1.9 +/- 0.9 < 1.5 NW-A 07/07/12 809 +/- 157 NW-A 07/24/12 893 +/- 150 NW-A 08/18/12 996 +/- 156 NW-A 09/15/12 1000 +/- 162 NW-A 10/16/12 875 +/- 177 NW-A 12/11/12 580 +/- 133 NW-B 02/03/12 418 +/- 127 NW-B 04/30/12 475 +/- 139
  • 0.6 < 0.8 < 0.4 1.5 +/- 0.8 < 1.5 NW-B 07/07/12 443 +/- 140 NW-B 07/24/12 501 +/- 131 NW-B 08/18/12 416 +/- 125 NW-B 09/15/12 352 +/- 126 NW-B 10/16/12 394 +/- 148 NW-B 12/11/12 246 +/- 116 NW-C 02/03/12 1920 +/- 245 NW-C 04/30/12 2020 +/- 267
  • 0.5
  • 0.9 < 0.4 < 1.4 < 1.5 NW-C 07/07/12 2100 +/- 264 NW-C 07/24/12 1690 +/- 223 NW-C 08/18/12 1560 +/- 208 B-5

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM-90, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE NW-C 09/15/12 1380 +/- 196 NW-C 10/16/12 1300 +/- 196 NW-C 12/11/12 1140 +/- 168 NW-CW 02/03/12 641 +/- 141 NW-CW 04/30/12 360 +/- 136 < 0.5 < 0.8 < 0.4 < 1.3 < 1.5 NW-CW 07/24/12 670 +/- 137 NW-CW 08/18/12 869 +/- 150 NW-CW 09/15/12 701 +/- 144 NW-CW 10/16/12 437 +/- 150 NW-CW 12/11/12 248 +/- 115 OS-14 01/31/12 < 193 OS-14 07/24/12 < 195 OS-14 10/16/12 < 170 < 0.9 <1.2 <0.3 10.4 +/- 1.3 < 1.6 OS-16 01/31/12 604 +/- 150 OS-16 05/01/12 384 +/- 135 < 0.6 <0.5 <0.4 5.9 +/- 0.9 < 1.7 OS-16 07/24/12 279 +/- 118 OS-16 10/16/12 300 +/- 137 OS-18 02/01/12 227 +/- 127 OS-18 02/01/12 < 189 OS-18 05/01/12 233 +/- 124 < 0.6 <0.7 <0.5 4.3 +/- 1.2 < 1.5 OS-18 07/25/12 238 +/- 117 OS-18 10/17/12 < 183 OSF 01/30/12 329 +/- 119 OSF 04/30/12 362 +/- 134 < 0.5 < 1.5 < 0.4 5.5 +/- 1.3 < 1.5 OSF 04/30/12 396 +/- 123

  • 0.7
  • 1.5 < 0.6 4.1 +/- 1.2 < 1.7 OSF 07/09/12 391 +/- 135 OSF 07/25/12 506 +/- 131 OSF 08/20/12 475 +/- 130 OSF 09/17/12 384 +/- 129 OSF 10/17/12 457 +/- 132 OSF 11/12/12 410 +/- 120 OSF 12/10/12 339 +/- 129 RW-1 01/31/12
  • 195 RW-1 05/02/12
  • 186
  • 0.5 < 0.7
  • 0.4 4.0 +/- 0.9 < 1.6 RW-1 07/24/12 < 176 RW-1 10/16/12 < 172 RW-2 01/31/12 < 196 RW-2 05/02/12 < 189 < 0.6 < 0.6 < 0.4 6.5 +/- 0.9 < 1.6 RW-2 07/25/12 262 +/- 118 RW-2 07/25/12 179 +/- 113 RW-2 10/17/12
  • 191 TRAINING CENTEI 05/02/12 < 186 B-6

TABLE B-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 DATE 3 05/02/12 < 16 < 18 <2 <2 <4 <2 <4 <2 <3 <2 <2 <12 <4 48S 04/30/12 < 20 < 18 <2 <2 <5 <2 <4 <2 <4 <2 <2 <16 <5 MS-1 04/30/12 < 42 < 82 <5 <4 <11 <5 <9 <6 <9 <5 <5 <31 <9 MS-19 04/30/12 < 18 < 17 <2 <2 <4 <2 <3 <2 <3 <2 <2 <14 <4 MS-2 05/01/12 < 25 < 54 <3 <3 <6 <3 <6 <3 <5 <3 <3 <17 <5 MS-20 05/01/12 < 18 < 18 <2 <2 <4 <2 <3 <2 <4 <2 <2 <15 <4 MS-20 05/01/12 < 16 < 30 <2 <2 <4 <2 <3 <2 <3 <2 <2 <13 <4 MS-21 05/03/12 < 15 < 29 <1 <2 <3 <1 <2 <2 <3 <1 <1 <9 <3 MS-22 05/02/12 < 20 < 47 <2 <2 <5 <2 <5 <2 <4 <2 <2 <14 <5

< 7 < 6 <1 <1 <2 <1 <1 <1 <1 <1 <1 <14 <4 MS-22 09/04/12 MS-3 02/01/12 < 39 < 30 <4 <4 <8 <4 <8 <4 <8 <4 <4 <27 <8 MS-3 05/03/12 < 14 < 15 <2 <2 <4 <2 <3 <2 <3 <1 <2 <10 <3 IMS-3 07/24/12 < 42 < 86 <4 <4 <7 <3 <8 <4 <8 <4 <4 <30 <8

-MS-3 10/16/12 < 51 < 60 <6 <7 <14 <6 <12 <7 <11 <5 <7 <21 <10 MS-4 05/02/12 < 27 < 59 <3 <3 <6 <3 <6 <3 <6 <3 <3 <16 <6 MS-5 01/31/12 < 35 < 34 <4 <4 <8 <4 <8 <4 <7 <4 <4 <26 <7 MS-5 05/01/12 < 26 < 52 <3 <3 <6 <3 <6 <3 <5 <3 <3 <17 <5 MS-5 07/24/12 < 43 < 87 <4 <5 <10 <5 <6 <4 <9 <4 <4 <29 <12 MS-5 10/16/12 < 35 < 35 <4 <4 <7 <3 <8 <4 <7 <4 <4 <19 <6 MS-5 10/16/12 < 64 < 61 <6 <6 <11 <7 <14 <6 <8 <5 <8 <35 <11 MS-7 05/01/12 < 32 < 86 <4 <4 <8 <4 <8 <4 <7 <4 <4 <22 <7 MS-8 01/31/12 < 27 < 53 <3 <4 <8 <3 <7 <4 <7 <3 <4 <22 <8 MS-8 05/01/12 < 33 < 79 <4 <4 <8 <4 <8 <4 <6 <3 <4 <20 <8 MS-8 07/23/12 < 34 < 34 <3 <4 <7 <2 <6 <4 <6 <3 <4 <29 <10 MS-8 10/17/12 < 48 < 51 <6 <8 <12 <8 <10 <8 <11 <6 <7 <33 <13 MW-i 05/02/12 < 19 < 19 <2 <2 <4 <2 <4 <2 <4 <2 <2 <14 <4 MW-2 05/02/12 < 15 < 13 <2 <2 <4 <2 <3 <2 <3 <1 <2 <11 <3 MW-TMI-101 05/01/12 < 30 < 31 <3 <3 <6 <3 <6 <4 <5 <3 <3 <17 <5 MW-TMI-101 10/17/12 < 58 < 144 <6 <6 <.13 <7 <11 <8 <12 <7 <7 <30 <14 MW-TMI-101 10/17/12 < 31 < 65 <3 <4 <6 <3 <6 <4 <6 <3 <4 <18 <5 MW-TMI-10S 05/01/12 < 29 < 60 <3 <3 <6 <3 <6 <3 <5 <3 <3 <18 <5 MW-TMI-10S 10/17/12 < 44 < 95 <6 <6 <12 <6 <9 <6 < 10 <5 <5 <22 <9 MW-TMI-12S < 13 < 12 <1 <1 <3 <1 <3 <1 <2 <1 <1 <8 <3 05/02/12 MW-TMI-13S 05/02112 < 16 < 16 <2 <2 <4 <2 <3 <2 <3 <2 <2 <12 <4 MW-TMI-14S 04/30/12 < 22 < 45 <2 <2 <5 <2 <4 <2 <4 <2 <2 <18 <6 MW-TMI-171 04/30112 < 25 < 57 <3 <3 <6 <3 <6 <3 <5 <3 <3 <17 <6

TABLE B-I.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 DATE MW-TMI-18D 05/02/12 < 31 < 34 < 3 < 3 < 7 <3 <7 <4 <6 <3 <4 <19 <8 MW-TMI-191 05/01/12 < 33 < 37 < 3 < 3 < 7 <4 <7 <4 <6 <3 <4 <20 <6 MW-TM I-1 D 05/02/12 < 19 53 +/- 31 < 2 < 2 < 5 <2 <4 <2 <4 <2 <2 <15 <5 MW-TMI-2D 05/02/12 < 26 < 58 < 3 < 3 < 7 <3 <6 <3 <5 <3 <3 <16 <7 MW-TMI-2D 05/02/12 < 20 < 18 < 2 <2 < 5 <2 <4 <2 <4 <2 <2 <14 <5 MW-TMI-31 05/02/12 < 15 < 14 < 2 <2 <4 <2 <3 <2 <3 <1 <2 <10 <4 MW-TMI-41 04/30/12 < 24 40 +/- 25 < 2 < 3 <6 <2 <5 <3 <4 <2 <2 <15 <5 MW-TMI-4S 04/30/12 < 25 < 54 < 3 < 3 < 6 <3 <5 <3 <5 <3 <3 <16 <5 MW-TMI-6D 05/01/12 < 25 < 29 <3 <3 <7 <4 <5 <3 <5 <3 <3 <16 <5 MW-TMI-61 05/01/12 < 35 < 40 <4 <4 <7 <4 <7 <4 <6 <3 <4 <22 <6 MW-TMI-7S 05/01/12 < 23 < 24 <2 <2 <6 <2 <4 <3 <4 <2 <2 <16 <4 MW-TMI-8S 05/01/12 < 29 < 54 <3 <3 <7 <3 <6 <4 <5 <3 <3 <17 <6 MW-TMI-8S 05/01/12 < 18 < 34 < 2 < 2 < 4 <2 <4 <2 <4 <2 <2 <14 <5 00 MW-TMI-91 05/01/12 < 27 < 64 < 2 < 3 < 7 <3 <6 <3 <5 <3 <3 <18 <6 NW-A 04/30/12 < 17 < 34 < 2 < 2 < 4 <2 <3 <2 <3 <2 <2 <13 <4 NW-B 04130/12 < 17 < 15 < 2 < 2 < 4 <2 <3 <2 <3 <2 <2 <12 <4 NW-C 04/30/12 < 17 < 32 < 2 < 2 < 4 <2 <3 <2 <3 <2 <2 <13 <4 NW-CW 04/30/12 < 16 < 31 < 2 < 2 < 4 <2 <3 <2 <3 <2 <2 <12 <5 OS-14 01/31/12 < 37 < 77 < 4 < 4 < 9 <5 <9 <4 <7 <3 <5 <29 <9 OS-14 07/24/12 < 38 324 +/- 83 < 3 < 4 < 10 <4 <7 <5 <8 <4 <4 <33 <11 OS-14 10/16/12 < 55 < 109 < 7 < 6 < 12 <6 <14 <4 <10 <5 <6 <26 <13 OS-16 01/31/12 < 34 < 34 < 4 < 5 < 8 <4 <9 <4 <8 <4 <4 <28 <7 OS-16 05/01/12 < 31 < 26 < 3 < 3 < 6 <3 <7 <4 <6 <3 <3 <18 <6 OS-16 07/24/12 < 42 < 37 < 4 < 4 < 10 <4 <7 <5 <6 <4 <4 <29 <12 OS-16 10/16/12 < 50 < 122 < 5 <6 < 15 <4 <11 <7 <12 <6 <7 <35 <13 OS-18 05/01/12 < 31 < 56 < 3 < 4 < 6 <3 <5 <4 <6 <3 <3 <21 <6 OSF 04/30/12 < 20 < 35 < 2 < 2 < 5 <2 <4 <2 <4 <2 <2 <15 <6 OSF 04/30/12 < 15 < 32 < 2 < 2 < 4 <2 <3 <2 <3 <2 <2 <12 <4 RW-1 05/02/12 < 15 < 17 < 2 < 2 < 4 <2 <3 <2 <3 <2 <2 <11 <4 RW-2 05/02/12 < 18 < 33 < 2 < 2 < 4 <2 <4 <2 <3 <2 <2 <12 <4 TRAINING CENTER 05/02/12 < 17 < 16 < 2 < 2 < 4 <2 <3 <2 <3 <2 <2 <12 <3

TABLE B-1.3 CONCENTRATIONS OF HARD TO DETECTS IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Am-241 Cm-242 Cm-243/244 Pu-238 Pu-239/240 U-234 U-235 U-238 Fe-55 Ni-63 DATE MS-22 09/04112 < 0.10 < 0.03 < 0.03 < 0.10 < 0.06 < 0.03 < 0.02 < 0.05 < 79 < 3.2 MW-TMI-101 05/01/12 < 0.06 < 0.09 < 0.10 < 0.03 < 0.16 0.37 +/- 0.14 < 0.06 0.27 + 0.12 < 147 < 3.6 MW-TMI-10S 05/01/12 < 0.10 < 0.09 < 0.08 < 0.11 < 0.13 < 0.16 < 0.07 < 0.09 < 99 < 3.7

TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 SW-E-1 01/30/12 < 193 SW-E-1 05/02/12 < 181 SW-E-1 07/25/12

  • 168 SW-E-1 10/17/12 < 177 SW-E-2 01/30/12
  • 164 SW-E-2 05/02/12 < 189 SW-E-2 05/02/12 < 182 SW-E-2 07/23/12 < 170 SW-E-2 10/17/12 < 181 SW-E-3 01/30/12 < 166 SW-E-3 05/02/12 < 182 SW-E-3 07/23/12 < 166 SW-E-3 10/17/12 < 177 SW-E-3 10/17/12 < 193 B-10

TABLE B-11.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 DATE

  • Sw-E-1 UbU0/12Z < 17 *<18 <2 <2 <4 <2 <4 <2 <3 <2 <2 <13 <4 SW-E-2 05/02/12 < 13 < 12 <1 <1 <3 <1 <3 <2 <2 <1 <1 <10 <3 SW-E-2 05/02/12 < 19 < 20 <2 <2 <4 <2 <4 <2 <4 <2 <2 <14 <4 SW-E-3 05/02/12 < 17 < 33 <2 <2 <4 <2 <4 <2 <3 <2 <2 <13 <4

TABLE B-Ill.1 CONCENTRATIONS OF TRITIUM IN STORM WATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 EDCB 01/31/12 358 +/- 134 EDCB 05/01/12 197 +/- 124 EDCB 07/31/12 < 191 EDCB 10/30/12 250 +/- 133 B-12

TABLE B-Ill.2 CONCENTRATIONS OF GAMMA EMITTERS IN STORM WATER SAMPLES COLLECTED IN THE VICINITY OF THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 DATE DATE EDCB 01/31/12 < 32 50 +/- 33 <4 <4 <8 <4 <7 <3 <7 <4 <4 <16 <5 EDCB 05/01/12 < 40 <78 <3 <4 <9 <4 <7 <4 <7 <4 <4 <32 <7 EDCB 07/31/12 < 40 < 63 <4 <4 <10 <3 <9 <5 <6 <4 <4 <30 < 11 EDCB 10/30/12 < 48 < 40 <5 <5 <9 <5 <10 <5 <8 <4 <6 <27 <9

TABLE B-IV.1 CONCENTRATIONS OF TRITIUM IN PRECIPITATION WATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 TM-PR-ESE 03/16/12

  • 166 H-3 TM-PR-ESE 05/08/12 382 +/- 138 TM-PR-ESE 05/08/12 Recount 361 +/- 123 TM-PR-ESE 07/10/12 357 +/- 145 TM-PR-ESE 10/16/12 316 +/- 123 TM-PR-MS-1 03/16/12
  • 168 TM-PR-MS-1 05/08/12 236 +/- 129 TM-PR-MS-i 05/08112 Recount 187 +/- 114 TM-PR-MS-1 07/10/12
  • 195 TM-PR-MS-1 10/16/12
  • 180 TM-PR-MS-2 03/16/12 293 +/- 119 TM-PR-MS-2 05/08/12 205. +/- 127 TM-PR-MS-2 07/10/12
  • 193 TM-PR-MS-2 10/16/12 234 +/- 119 TM-PR-MS-22 07/19/12 220 +/- 114 TM-PR-MS-22 07/23/12 1990 +/- 237 TM-PR-MS-22 08/02/12 *184 TM-PR-MS-22 08/06/12
  • 167 TM-PR-MS-22 08/13/12
  • 177 TM-PR-MS-22 08/16/12 261 +/- 117 TM-PR-MS-22 08/20/12 442 +/- 129 TM-PR-MS-22 08/20/12 Reanalysis 248 +/- 127 TM-PR-MS-22 08/23/12 1730 +/- 236 TM-PR-MS-22 08/23/12 Reanalysis 1740 +/- 231 TM-PR-MS-22 08/27/12 1040 +/- 170 TM-PR-MS-22 09/04/12 2030 +/- 260 TM-PR-MS-22 09/04/12 Recount 1990 +/- 262 TM-PR-MS-22 09/04/12 Reanalysis 2070 +/- 272 TM-PR-MS-22 09/07/12 173 +/- 112 TM-PR-MS-22 09/10/12 270 +/- 122 TM-PR-MS-22 09/20/12 179 +/- 107 TM-PR-MS-22 09/27/12
  • 189 TM-PR-MS-22 10/01/12 297 +/- 123 TM-PR-MS-22 10/08/12 2020 +/- 267 TM-PR-MS-22 10/08/12 Recount 2070 +/- 254 TM-PR-MS-22 10/08/12 Reanalysis 1980 +/- 245 TM-PR-MS-22 10/22/12 474 +/- 132 TM-PR-MS-22 10/30/12 238 +/- 136 TM-PR-MS-22 11/19/12
  • 180 TM-PR-MS-22 12/03/12 1640 +/- 217 TM-PR-MS-22 12/03/12 Recount 1650 +/- 221 TM-PR-MS-22 12/03/12 Reanalysis 1520 +/- 209 TM-PR-MS-22 12/10/12 1970 +/- 256 TM-PR-MS-22 12/17/12 335 +/- 120 TM-PR-MS-22 12/24/12 945 +/- 153 TM-PR-MS-4 03/16/12
  • 167 TM-PR-MS-4 05/08/12
  • 188 TM-PR-MS-4 07/10/12
  • 190 TM-PR-MS-4 10/16/12
  • 171 B-14

APPENDIX C DATA TABLES

TABLE C-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SPLIT SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 Sr-89 Sr-90 Gr-A Gr-B MS-20 05/01/12 751 +/- 106 < 0.7 < 0.5 < 2.4 2.0 +/- 2.0 MS-21 01/31/12 257 +/- 86 MS-2 01/31/12 772 +/- 108 MS-22 07/09/12 10153 +/- 306 MS-22 07/23/12 1184 +/- 132 MS-5 10/16/12 < 149 MS-7 07/25/12 217 +/- 96 MW-TMI-101 10/17/12 1010 +/- 116 MW-TMI-131 07/24/12 375 +/- 103 MW-TMI-14D 02/01/12 715 +/- 105 MW-TMI-141 04/30/12 235 +/- 84 MW-TMI-2D 05/02/12 187 +/- 81 < 0.7 < 0.5 < 1.5 1.9 +/- 1.0 MW-TMI-8S 05/01/12 218 +/- 83 OS-18 02/01/12 233 +/- 85 OSF 04/30/12 488 +/- 95 < 0.8 < 0.5 < 3.4 2.3 +/- 1.2 RW-2 07/25/12 213 +/- 96 48S 10/17/12 164 +/- 80 C-1

TABLE C-I.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SPLIT SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-95 Nb-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD MW-TMI-8S 05/01/12 < 29 < 72 <2 <5 <2 <2 <4 <4 <4 <3 <3 < 12 <4 MW-TMI-2D 05/02/12 < 31

  • 70 <2 < 3 <2 <2 <5 <6 <4 <3 <3
  • 21 <4 OSF 04/30/12 < 15 < 47 <3 <6 <3 <2 <4 <4 <3 <2 <2 *17 <6 MS-20 05/01/12 < 13 <54 <2 <4 <2 <2 <4 <4 <4 <3 <2 < 19 <3 MS-5 10/16/12 < 21 < 49 <2 <7 <2 <2 <5 <4 <3 <3 <2 < 24 <4 MW-TMI-101 10/17/12 < 24 < 62 <2 <6 <3 <3 <3 <5 <4 <2 <2 < 19 <4

TABLE C-1.3 CONCENTRATIONS OF HARD TO DETECTS IN GROUNDWATER SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Am-241 Cm-242 Cm-243/244 Pu-238 Pu-239/240 U-233/234 U-235 U-238 Fe-55 Ni-63 PERIOD NONE FOR 2012

TABLE C-I1.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SPLIT SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 SWV-E--2 U0/U02/1 < 148 C-4

TABLE C-11.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SPLIT SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER 12 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-95 Nb-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD SW-E-2 05/02/12 < 33 < 63 <2 <7 <3 <2 <4 <6 <3 <3 <3 <12 <2 cI

TABLE C-I1.1 CONCENTRATIONS OF TRITIUM IN PRECIPITATION WATER SPLIT SAMPLES COLLECTED AS PART OF THE RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM, THREE MILE ISLAND NUCLEAR STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 TM-PR-MS-2Q 03/30/12 310 +/- 87 TM-PR-MS-2Q 06/08/12 185 +/- 79 TM-PR-MS-2Q 08/15/12 < 153 TM-PR-MS-2Q 10/26/12 253 +/- 91 C-6

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