ML15091A097

Figures from Indian Point Quarter 3 2014 Groundwater Monitoring Report - Part 4

ML15091A097
Person / Time
Site:	Indian Point
Issue date:	04/01/2015
From:	Michael Wentzel Division of License Renewal
To:
References
Download: ML15091A097 (3)

Text

April 1, 2015 Memo To:

File From:

Michael Wentzel

Subject:

Figures from Indian Point Quarter 3 2014 Groundwater Monitoring Report The following figures are from the 3rd quarter 2014 groundwater monitoring report for Indian Point (available at http://www.safesecurevital.com/uploads/15-3-20.pdf) and were made available to NRC staff by request as documented in an email from Dara Gray, Entergy, to Michael Wentzel, NRC, dated March 31, 2015. The files listed below, which were identified in the March 31, 2015 email, are not included because the NRC staff was unable to open the files:

FINAL Figure 4 - Q3 2014 Current and Potential Future SSC Source Locations.pdf FINAL Figure 5A - Q3 2014 Longterm Transducer Monitoring Evaluation Map.pdf FINAL Figure 5A - Q3 2014 Longterm Transducer Monitoring Evaluation M...LY].pdf

Storage storage Gravel Gravel Storage No Access Grass Earth Parking Asphalt Asphalt curb Asphalt parking Asphalt Concrete curbs Concrete curb Concrete Concrete curb Wooden curb Grass A/C UNIT Handicap ramp A/C unit on concrete Stone curbs Asphalt drive Asphalt parking Asphalt parking Asphalt parking Asphalt parking Asphalt curb Shrubs Trans.

Transformer area and switch gear Storage Containers A/C Units Grass Concrete curb Grass Shrubs Open grate Tank Asphalt drive Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt drive Asphalt Asphalt Drive Gravel Gravel Transformer yard Asphalt Drive this Area No Access Asphalt Concrete Retaining Wall Stone retaining wall Gravel parking Gravel parking Gravel parking Gravel parking Stone curbs Stone curbs Asphalt parking Concrete curb Asphalt parking Concrete curb curb pad Asphalt curb Asphalt curb Asphalt parking Grass Asphalt curb Asphalt curb Grass Asphalt curb Asphalt parking Gravel parking Storage Storage Tank Fuel Oil Grass Asphalt drive Storage units Gravel Parking lot Asphalt Tank Overhead walkway Concrete curb Asphalt parking Asphalt parking Asphalt Asphalt Asphalt Asphalt Concrete pier Courtyard Asphalt Rip-rap 110 140 120 130 30 30 40 50 30 40 50 90 70 70 80 90 80 80 90 100 110 110 110 110 120 120 100 70 60 70 80 90 60 80 90 100 100 0

110 140 140 Transformer Gravel Storage Tank Fuel Oil Tank Tank Tank Covered Concrete Asphalt parking Condensate Tank Transformers on raised Concrete Pad Trans.

Transformers Concrete slab Tank Grass Transformers on raised Concrete Pad Tank Concrete Bridge Concrete Bridge Storage Tank Transformer Substation "H" Trailer Trans Tank Storage Tank Tank Pit Asphalt Trans Trans Trans Storage Tanks Asphalt Grass Vent pit Mach.

stand Unit 2 Condensate Storage Tank Liquid Nitrogen Transformers Yard (Gravel)

DISCHARGE OUTFALL CANAL Tank Gravel Shrubs Shrubs Shrubs Overhead Crane Grass FUEL TRANSFER POOL STORAGE POOL STORAGE POOL FAILED FUEL AUX. POOL DISASSEMBLY POOL CASK LOAD POOL CASK WASH &

DISASSEMBLY ISOLATION PIT PUMP SUCTION WELL WATER STORAGE POOL ROOF DRAIN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 33' 33' 42.5' 42.5' MH-4 MH-4A MH-5 MH-6 MH-2 B6 B6A B5 B4 B4A B3 B3A B2A B2 B1 A2 A1 U3-MH-14 F5 A2A CB-B CB-E CB-F C-1 C-3 D2 B7 B8 CB-33 CB-34 CB-15 CB-14 CB-13 CB-32 CB-31 CB-30 A7 U1-CB-22 U3-CB (U1-CB-10)

CB-29 U3-CB (U1-CB-9)

U1-CB-21 U1-CB-20 CB-28 CB-24 CB-27 E16 E16 E16A CB-6 CB-5A (CB-6)

CB-5B CB-7 CB-5 MH16 CB-3B CB3A CB4 CB-2C CB3 CB-2B CB-2A CB-2 CB-1 MH18 MH8 MH17 MH7 MH23A CB-16 MH9 MH10 MH11 MH22 MH21 MH13 MH3 MH12 MH1 CB-18 MH15 CB-19 CB-23 MH14 C2 E7 E6 E8 E9 E10 E11 E5 E5A E4 E4 E4A E3B E3 E3A F3 F4 CB E2 E2A F6 F7 E2B E2C E1 A6 A5 A3A A3 A4 E14 E15 E15A (U1-CB-8)

AB E13 E12 D1 CB-17 F2 F1 CB-12 MH-23 MH-19 MH-20 ROOF DRAIN Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard PAB Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL UNIT 1 UNIT 3 Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co UTILITY TUNNEL UTILITY TUNNEL CSS CSS TRENCH Cs Ni Co Cs Ni Co Cs Ni Co 50 40 30 20 10 5

50 40 30 20 5

20 13 10 Cs Ni Co B-1 Cs Ni Co B-6 ALL EYW AY U1-SFDS Cs Ni Co U1-NCD Cs Ni Co Cs Ni Co MH-5 VCFD 2

2 2

2 2

3 1

1 1

1 1

1 1

1 1

1 1

1 1

1 5

6 MW-68 Cs Ni Co 7

I-2 HR-1 U3-3 U3-2 U3-1 RW-1 OUT-1 U3-C1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 U3-4S U3-4D MW-52 MW-51 MW-50 MW-49 MW-47 MW-46 MW-45 MW-44 MW-42 MW-41 MW-38 MW-32 MW-31 MW-40 MW-48 MW-43 MW-39 U3-T2 U3-T1 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 9

8 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 16260 46925 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 304.6 417.75 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.1 8.3 7.2 9.45

-1.3 4.68 5.16 6.14 6.02 8.44 3.69 3.76 9.02 0.81 8.94 2.69 3.81 7.88 1.22 33.9 22.7 21.9 10.6 3.13 3.29 6.97 4.06 5.76 6.41 7.45 9.05 8.82 9.02 9.92 2.34 7.06 6.46 7.19 5.55 6.04 5.64 0.49 0.68 0.47 2.52 0.47 0.16 2.04 12.81 35.07 34.43 41.21 44.13 50.75

-1.64

-0.15

-0.48 29.36 37.68 36.17 40.36 49.24 40.66 43.87 44.32 46.83 52.35 54.22 32.72 23.79 24.43 24.79 25.12 25.21 26.96 30.71 31.76 32.15 25.45 26.68 21.51 21.08 22.37 25.16 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-1.19

-1.54

-0.86

-2.26

-0.98

-1.24

-0.13

-0.08

-1.79

-1.69

-1.85

-0.37

-0.85

-1.24

-0.84

-0.15

-0.12

-1.93

-0.14

-0.86

-0.82

-0.02

-1.56

-1.02

-2.59

-2.25

-2.03 115.76 H U D S O N R I V E R 4

DRY ND ND ND ND ND ND ND ND ND ND ND ND 0.29 Plant North N

N 50 0

50 100 150 25 Feet Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: EDC 01.0017869.93 8

INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK 3rd QUARTER 2014 ROLLING AVERAGE CESIUM, COBALT, AND NICKEL ACTIVITY MAP 1

3rd QUARTER 2014 ROLLING AVERAGE CESIUM, COBALT, AND NICKEL ACTIVITY MAP 1

East Fuel Pool LEGEND Notes:

1. Groundwater contours drawn from Q4 2008 groundwater data to show groundwater conditions used for recalibration of the Precipitation Mass Balance Model (see Q2 2009 LTM Report). These contours developed from limited data recorded on 11/11/2008. Actual elevations may vary from conditions shown and the actual distribution of piezometric heads is likely more complex than indicated.

Data Notes:

1. Average Cesium, Cobalt, and Nickel activity values are yearly rolling arithmetic averages of the current and preceding three quarters' data. Only values greater than the MDC are used in this average, thus adding a degree of conservatism to the subsequent dose computations.

2. Foundation drain sampling locations, for which investigation levels are not applicable.

3. Historically elevated Tritium levels in MW-42-49 observed during Q1 2009 were consistent with leakage visually identified on 03/07/2009 (and terminated immediately thereafter) from the waste distillate tank valves located within the Unit 1 fuel storage building. Data trends through Q1 2010 indicate that the observed Tritium peaks in MW-42-49 and downgradient wells associated with this release have dissipated through the groundwater flow system.

4. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with a peak in activity observed in Unit 3 Manhole A2.

This release was initially detected in a storm drain sample collected 03/25/2009 under the 80-10 Effluents Program. Additionally, transient Tritium peaks had been more recently detected in MH-A2 between Q3 2010 and Q3 2011. Elevated Tritium levels observed in downgradient monitoring locations have been consistent with the peaks noted above. Based on investigations initiated in, and ongoing since, 2009, as well as the more recent sampling of the Unit 3 Fuel Storage Building (FSB) roof drains, it has been concluded that these increases in storm drain and monitoring well Tritium activity are due to condensation of SFP evaporation on the FSB roof (Washout) when the exhaust fan was inoperable due to equipment failure. This Tritium washout then entered the roof drain and discharged directly into MH-A2 during rainfall events. Entergy placed the FSB vent fan back in service immediately once repairs could be completed (7-21-2011), and the Tritium activity in MH-A2 returned to baseline conditions within 2 weeks thereafter.

5. Elevated levels of Tritium detected in MH-9 and MH-10a during routine 80-10 Effluents Program sampling on 1/15/2010 appears to have originated from a Q4 2009 transient leak in temporary RWST / R.O. skid connection hoses, which flowed into MH-9. It also appears that this release entered the well vault for MW-32, and may have penetrated the well casings and entered the subsurface around the monitoring installation.

6. Elevated levels of Tritium initially detected in U1-CSS, MW-39, MW-46, MW-54, MW-56 and MW-57 during the Q2-2011 sampling event appear to have originated from a Q2 2011 Sample Sink Overflow and subsequent floor flooding in a Unit 1 Chemical Systems Building sample room on the 53 elevation.

7. Elevated levels of Tritium initially detected in MW-31 during the Q2 2012 sampling event appear to have originated from a leak in an existing Unit 2 Maintenance Outage Building (MOB) drain line. This double contained, stainless steel line was used to service the R.O. skid at its new location in the MOB during the 2012 Unit 2 refueling outage.

8. Elevated levels of Tritium initially detected in MW-42-49, MW-53-82 and U1-CSS during the Q4 2013 sampling event appear to have originated from an overflow of the Unit 1 Containment Spray Annulus (CSA).

9. Elevated levels of Tritium initially detected in Q2 2014 supplemental samples from MW-31 and MW-32. Release originated from transient flooding of the Unit 2 Fan Building 51 floor during 2014 refueling outage discharge of RCS drain down to a partially obstructed floor drain.

General Notes:

1. Base map was developed from an untitled electronic file provided by Badey and Watson Surveying and Engineering, P.C., Dated 2/3/06; CAD file name : "GZA.dwg".

© 2015 - GZA GeoEnvironmental, Inc. J:\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\Q3_2014\\15-03-17 F08 Q3 2014 Rolling Average Cesium, Cobalt, and Nickel Activity Map 17869-93_FINAL.mxd, 3/20/2015, 2:33:17 PM, elaine.donohue 03-20-2015 GZA GeoEnvironmental, Inc.

249 Vanderbilt Avenue Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 Standby Radionuclide Monitoring Installation Longterm Radionuclide Monitoring Installation MW-30 Boring / Monitoring Installation Designation Depth-Specific Data Groundwater elevation for each screened interval at time of low river tide for Q4 2008 (11/11/2008).

1 1

11.3 11.9 12.6 12.8 Screened in Soil Screened in Bedrock Multiple Screened Intervals w/ Depth 6000 836 294 Average activity of Cs 137 (pCi/L) for each screened interval.

37 508 250 194 4

526 207 49 20 Average activity of Co 60 (pCi/L) for each screened interval.

Average activity of Ni 63 (pCi/L) for each screened interval.

Nickel Data1 Cobalt Data1 Cesium Data1 Average Cs, pCi/L Average Co, pCi/L Average Ni, pCi/L Not Detected (ND)

ND - 10 10 - 50 50 - 500 500 - 1,000 1,000 - 5,000

> 5,000 No Depth-Specific Samples ND 4.2 37 294 836 4460 6000 Not Detected (ND)

ND - 25 25 - 100 100 - 200 200 - 300 300 - 500

> 500 No Depth-Specific Samples ND 4

83 194 250 350 508 Not Detected (ND)

ND - 12 12 - 25 25 - 50 50 - 100 100 - 250 250 - 500

> 500 No Depth-Specific Samples ND 4

20 49 54 207 300 526 Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain Probable Legacy Release SSCs Terminated Connection To Storm Drain Drain Exfiltration Inter-Structure Joint / Mud Mat Unit 1 West Fuel Pool (All U1-SFPs drained and inactive as of October 2008)

Unit 2 Fuel Pool (All identified leaks repaired as of December 2007)

Containment Spray Sump Pipe Trench Groundwater Elevation Contours Contours Other Than 10' Interval 5

20 Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 1 1

Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 Supplementary Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 2013 2014 2014 Quarter 2 2014 2014 Quarter 3 2014 2013 2014 2014 Quarter 2 2014 2014 MW-30-69 ND ND ND ND positive ND MW-54-37 ND ND ND NA ND positive ND MW-30-84 ND ND ND ND positive ND MW-54-58 ND ND ND NA ND positive ND MW-31-49 ND ND ND ND positive ND MW-54-123 ND ND ND NA ND positive ND MW-31-63 ND ND ND ND positive ND MW-54-144 ND ND ND NA ND positive ND MW-31-85 ND ND ND ND positive ND MW-54-173 ND ND ND NA ND positive ND MW-32-59 ND ND ND ND positive ND MW-54-190 ND ND ND NA ND positive ND MW-32-85 ND ND ND ND positive ND MW-55-24 ND ND ND NA ND positive ND MW-32-149 ND ND ND ND positive ND MW-55-35 ND ND ND NA ND positive ND MW-32-173 ND ND ND ND NA positive ND MW-55-54 ND ND ND NA ND positive ND MW-32-190 ND ND ND ND NA positive ND MW-56-53 ND ND ND NA NA positive ND MW-33 NA NA ND NA NA NA positive ND MW-56-83 ND ND ND NA NA positive ND MW-35 NA NA ND NA NA NA positive ND MW-57-11 NA NA ND NA NA positive ND MW-36-24 ND ND ND NA ND NA positive ND MW-57-20 NA NA ND NA NA positive ND MW-36-41 ND ND ND NA ND NA positive ND MW-57-45 NA NA ND NA NA positive ND MW-36-52 ND ND ND NA ND NA positive ND MW-58-26 ND NA ND NA NA positive ND MW-37-22 ND ND ND NA ND NA positive ND MW-58-65 ND NA ND NA NA positive ND MW-37-32 ND ND ND NA ND NA positive ND MW-59-32 NA ND NA NA NA ND MW-37-40 ND ND ND NA ND NA positive ND MW-59-45 NA ND NA NA NA ND MW-37-57 ND ND ND NA ND NA positive ND MW-59-68 NA ND NA NA NA ND MW-39-67 ND NA ND NA NA NA positive ND MW-60-35 ND ND ND NA ND positive ND MW-39-84 ND NA ND NA NA NA positive ND MW-60-53 ND ND ND NA ND positive ND MW-39-102 ND NA ND NA NA NA positive ND MW-60-72 ND ND ND NA ND positive ND MW-39-124 ND NA ND NA NA NA positive ND MW-60-135 ND ND ND NA ND positive ND MW-39-183 ND NA ND NA NA NA positive ND MW-60-154 ND ND ND NA ND positive ND MW-39-195 ND NA ND NA NA NA positive ND MW-60-176 ND ND ND NA ND positive ND MW-40-27 ND ND ND NA ND NA positive ND MW-62-18 ND ND ND NA ND positive ND MW-40-46 ND ND ND NA ND NA positive ND MW-62-37 ND ND ND NA ND positive ND MW-40-81 ND ND ND NA ND NA positive ND MW-62-53 ND ND ND NA ND positive ND MW-40-100 ND ND ND NA ND NA positive ND MW-62-71 ND ND ND NA ND positive ND MW-40-127 ND ND ND NA ND NA positive ND MW-62-92 ND ND ND NA ND positive ND MW-40-162 ND ND ND NA ND NA positive ND MW-62-138 ND ND ND NA ND positive ND MW-41-40 ND ND ND NA ND NA positive ND MW-62-182 ND ND ND NA ND positive ND MW-41-63 ND ND ND NA ND NA positive ND MW-63-18 ND ND ND NA ND positive ND MW-42-49 5.32E+04 5.65E+04 5.04E+04 NA 2.76E+04 NA 3.40E+04 4.69E+04 MW-63-34 ND ND ND NA ND positive ND MW-42-78 ND ND ND NA ND NA positive ND MW-63-50 ND ND ND NA ND positive ND MW-43-28 ND ND ND NA ND NA positive ND MW-63-93 ND ND ND NA ND positive ND MW-43-62 ND ND ND NA ND NA positive ND MW-63-112 ND ND ND NA ND positive ND MW-44-66 ND ND ND NA ND NA positive ND MW-63-121 ND ND ND NA ND positive ND MW-44-102 ND ND ND NA ND NA positive ND MW-63-163 ND ND ND NA ND positive ND MW-45-42 ND ND ND NA ND NA positive ND MW-63-174 ND ND ND NA ND positive ND MW-45-61 ND ND ND NA ND NA positive ND MW-66-21 ND ND ND NA ND positive ND MW-46 ND ND ND NA ND NA positive ND MW-66-36 ND ND ND NA ND positive ND MW-47-56 NA ND ND NA NA NA ND MW-67-39 ND ND ND NA ND positive ND MW-47-80 NA ND ND NA NA NA ND MW-67-105 ND ND ND NA ND positive ND MW-49-26 ND ND ND NA ND NA positive ND MW-67-173 ND ND ND NA ND positive ND MW-49-42 ND ND ND NA ND NA positive ND MW-67-219 ND ND ND NA ND positive ND MW-49-65 ND ND ND NA ND NA positive ND MW-67-276 ND ND ND NA ND positive ND MW-50-42 ND ND ND NA ND NA positive ND MW-67-323 ND ND ND NA ND positive ND MW-50-66 ND ND ND NA ND NA positive ND MW-67-340 ND ND ND NA ND positive ND MW-51-40 ND ND ND NA ND NA positive ND MW-68-19 NA ND ND NA ND positive ND MW-51-79 ND ND ND NA ND NA positive ND MW-68-29 NA ND ND NA ND positive ND MW-51-104 ND ND ND NA ND NA positive ND MW-68-57 NA ND ND NA ND positive ND MW-51-135 ND ND ND NA ND NA positive ND MW-68-103 NA ND ND NA ND positive ND MW-51-163 ND ND ND NA ND NA positive ND MW-68-132 NA ND ND NA ND positive ND MW-51-189 ND ND ND NA ND NA positive ND MW-107 NA NA ND NA NA positive ND MW-52-11 NA NA ND NA NA NA positive ND MW-111 ND NA ND NA ND positive ND MW-52-18 NA NA ND NA NA NA positive ND U3-4D ND ND ND NA ND positive ND MW-52-48 NA NA ND NA NA NA positive ND U3-4S ND ND ND NA ND positive ND MW-52-64 NA NA ND NA NA NA positive ND U3-T1 ND ND ND NA ND positive ND MW-52-122 NA NA ND NA NA NA positive ND U3-T2 ND ND ND NA ND positive ND MW-52-162 NA NA ND NA NA NA positive ND U1-CSS ND ND ND NA NA positive ND MW-52-181 NA NA ND NA NA NA positive ND U1-NCD 1.17E+04 1.69E+04 1.43E+04 2.50E+04 1.34E+04 1.63E+04 MW-53-82 ND ND ND NA ND NA positive ND U1-SFDS ND ND ND ND ND ND MW-53-120 ND ND ND NA ND NA positive ND I-2 ND ND ND NA ND positive ND LAF-002 ND NA ND NA NA positive ND B-1 NA NA NA NA NA NA B-6 ND ND ND NA ND ND MH-5 VCFD ND ND ND NA ND ND

5) *** Multiple Sup-Q2 2014 samples were collected. Refer to Table 4 for the laboratory analytical results of these samples.

3)

• Foundation drain sampling locations, for which investigation levels are not applicable.

4) ** Standby monitoring installation, for which investigation levels are not applicable.

Well ID Cesium Results (pCi/L) 2014 Investigation Level Rolling Annual Average Notes:

Cesium Results (pCi/L)

Rolling Annual Average Well ID 2014 Investigation Level

1) Only results greater than the MDC are reported herein. ND therefore indicates that the analytical result was below the MDC and typically also below the standard deviation threshold of three times 1 sigma. The rolling average is calculated using only results greater than the MDC. Given that ND represents real groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

2) A shaded value indicates that the reported activity exceeds the Investigation Level (I.L.) that was applicable at the time of sampling. NA indicates that data is not available for this time period.

shaded value Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 Supplementary Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 2013 2014 2014 Quarter 2 2014 2014 Quarter 3 2014 2013 2014 2014 Quarter 2 2014 2014 MW-30-69 ND ND ND ND positive ND MW-54-37 ND ND ND NA ND positive ND MW-30-84 ND ND ND ND positive ND MW-54-58 ND ND ND NA ND positive ND MW-31-49 ND ND ND ND positive ND MW-54-123 ND ND ND NA ND positive ND MW-31-63 ND ND ND ND positive ND MW-54-144 ND ND ND NA ND positive ND MW-31-85 ND ND ND ND positive ND MW-54-173 ND ND ND NA ND positive ND MW-32-59 ND ND ND ND positive ND MW-54-190 ND ND ND NA ND positive ND MW-32-85 ND ND ND ND positive ND MW-55-24 ND ND ND NA ND positive ND MW-32-149 ND ND ND ND positive ND MW-55-35 ND ND ND NA ND positive ND MW-32-173 ND ND ND ND NA positive ND MW-55-54 ND ND ND NA ND positive ND MW-32-190 ND ND ND ND NA positive ND MW-56-53 ND ND ND NA NA positive ND MW-33 NA NA ND NA NA NA positive ND MW-56-83 ND ND ND NA NA positive ND MW-35 NA NA ND NA NA NA positive ND MW-57-11 NA NA ND NA NA positive ND MW-36-24 ND ND ND NA ND NA positive ND MW-57-20 NA NA ND NA NA positive ND MW-36-41 ND ND ND NA ND NA positive ND MW-57-45 NA NA ND NA NA positive ND MW-36-52 ND ND ND NA ND NA positive ND MW-58-26 ND NA ND NA NA positive ND MW-37-22 ND ND ND NA ND NA positive ND MW-58-65 ND NA ND NA NA positive ND MW-37-32 ND ND ND NA ND NA positive ND MW-59-32 NA ND NA NA NA ND MW-37-40 ND ND ND NA ND NA positive ND MW-59-45 NA ND NA NA NA ND MW-37-57 ND ND ND NA ND NA positive ND MW-59-68 NA ND NA NA NA ND MW-39-67 ND NA ND NA NA NA positive ND MW-60-35 ND ND ND NA ND positive ND MW-39-84 ND NA ND NA NA NA positive ND MW-60-53 ND ND ND NA ND positive ND MW-39-102 ND NA ND NA NA NA positive ND MW-60-72 ND ND ND NA ND positive ND MW-39-124 ND NA ND NA NA NA positive ND MW-60-135 ND ND ND NA ND positive ND MW-39-183 ND NA ND NA NA NA positive ND MW-60-154 ND ND ND NA ND positive ND MW-39-195 ND NA ND NA NA NA positive ND MW-60-176 ND ND ND NA ND positive ND MW-40-27 ND ND ND NA ND NA positive ND MW-62-18 ND ND ND NA ND positive ND MW-40-46 ND ND ND NA ND NA positive ND MW-62-37 ND ND ND NA ND positive ND MW-40-81 ND ND ND NA ND NA positive ND MW-62-53 ND ND ND NA ND positive ND MW-40-100 ND ND ND NA ND NA positive ND MW-62-71 ND ND ND NA ND positive ND MW-40-127 ND ND ND NA ND NA positive ND MW-62-92 ND ND ND NA ND positive ND MW-40-162 ND ND ND NA ND NA positive ND MW-62-138 ND ND ND NA ND positive ND MW-41-40 ND ND ND NA ND NA positive ND MW-62-182 ND ND ND NA ND positive ND MW-41-63 ND ND ND NA ND NA positive ND MW-63-18 ND ND ND NA ND positive ND MW-42-49 ND ND ND NA ND NA positive ND MW-63-34 ND ND ND NA ND positive ND MW-42-78 ND ND ND NA ND NA positive ND MW-63-50 ND ND ND NA ND positive ND MW-43-28 ND ND ND NA ND NA positive ND MW-63-93 ND ND ND NA ND positive ND MW-43-62 ND ND ND NA ND NA positive ND MW-63-112 ND ND ND NA ND positive ND MW-44-66 ND ND ND NA ND NA positive ND MW-63-121 ND ND ND NA ND positive ND MW-44-102 ND ND ND NA ND NA positive ND MW-63-163 ND ND ND NA ND positive ND MW-45-42 ND ND ND NA ND NA positive ND MW-63-174 ND ND ND NA ND positive ND MW-45-61 ND ND ND NA ND NA positive ND MW-66-21 ND ND ND NA ND positive ND MW-46 ND ND ND NA ND NA positive ND MW-66-36 ND ND ND NA ND positive ND MW-47-56 NA ND ND NA NA NA ND MW-67-39 ND ND ND NA ND positive ND MW-47-80 NA ND ND NA NA NA ND MW-67-105 ND ND ND NA ND positive ND MW-49-26 ND ND ND NA ND NA positive ND MW-67-173 ND ND ND NA ND positive ND MW-49-42 ND ND ND NA ND NA positive ND MW-67-219 ND ND ND NA ND positive ND MW-49-65 ND ND ND NA ND NA positive ND MW-67-276 ND ND ND NA ND positive ND MW-50-42 ND ND ND NA ND NA positive ND MW-67-323 ND ND ND NA ND positive ND MW-50-66 ND ND ND NA ND NA positive ND MW-67-340 ND ND ND NA ND positive ND MW-51-40 ND ND ND NA ND NA positive ND MW-68-19 NA ND ND NA ND positive ND MW-51-79 ND ND ND NA ND NA positive ND MW-68-29 NA ND ND NA ND positive ND MW-51-104 ND ND ND NA ND NA positive ND MW-68-57 NA ND ND NA ND positive ND MW-51-135 ND ND ND NA ND NA positive ND MW-68-103 NA ND ND NA ND positive ND MW-51-163 ND ND ND NA ND NA positive ND MW-68-132 NA ND ND NA ND positive ND MW-51-189 ND ND ND NA ND NA positive ND MW-107 NA NA ND NA NA positive ND MW-52-11 NA NA ND NA NA NA positive ND MW-111 ND NA ND NA ND positive ND MW-52-18 NA NA ND NA NA NA positive ND U3-4D ND ND ND NA ND positive ND MW-52-48 NA NA ND NA NA NA positive ND U3-4S ND ND ND NA ND positive ND MW-52-64 NA NA ND NA NA NA positive ND U3-T1 ND ND ND NA ND positive ND MW-52-122 NA NA ND NA NA NA positive ND U3-T2 ND ND ND NA ND positive ND MW-52-162 NA NA ND NA NA NA positive ND U1-CSS ND ND ND NA NA positive ND MW-52-181 NA NA ND NA NA NA positive ND U1-NCD ND ND ND ND ND ND MW-53-82 ND ND ND NA ND NA positive ND U1-SFDS ND ND ND ND ND ND MW-53-120 ND ND ND NA ND NA positive ND I-2 ND ND ND NA ND positive ND LAF-002 ND NA ND NA NA positive ND B-1 NA NA NA NA NA NA B-6 ND ND ND NA ND ND MH-5 VCFD ND ND ND NA ND ND

5) *** Multiple Sup-Q2 2014 samples were collected. Refer to Table 4 for the laboratory analytical results of these samples.

3)

• Foundation drain sampling locations, for which investigation levels are not applicable.

4) ** Standby monitoring installation, for which investigation levels are not applicable.

2014 Investigation Level Notes:

1) Only results greater than the MDC are reported herein. ND therefore indicates that the analytical result was below the MDC and typically also below the standard deviation threshold of three times 1 sigma. The rolling average is calculated using only results greater than the MDC. Given that ND represents real groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

2) A shaded value indicates that the reported activity exceeds the Investigation Level (I.L.) that was applicable at the time of sampling. NA indicates that data is not available for this time period.

Cobalt Results (pCi/L)

Rolling Annual Average Well ID Well ID Cobalt Results (pCi/L) 2014 Investigation Level Rolling Annual Average shaded value Localized Transient Releases Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 03/07/2009 3

(initial)

Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09 4

Transient Spill from Temporary R.O. Skid Piping -

Entered MW-32 Vault and MH 11/21/2009 5

Sample Sink Overflow - Unit 1 Chemical Systems Building - Q2 2011 6

Unit 2 MOB Drain Leak - Q2 2012 7

Unit 1 Containment Spray Annulus (CSA) Overflow 8

Unit 2 Fan Building 51 Floor Drain Overfill 9

Quarter 4 Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 2013 2014 2014 2014 2013 2014 2014 Quarter 2 2014 2014 MW-30-69 NA NA NA NA positive NA MW-54-37 ND ND ND NA ND positive ND MW-30-84 NA NA NA NA positive NA MW-54-58 ND ND ND NA ND positive ND MW-31-49 NA NA NA NA positive NA MW-54-123 ND ND ND NA ND positive ND MW-31-63 NA NA NA NA positive NA MW-54-144 ND ND ND NA ND positive ND MW-31-85 NA NA NA NA positive NA MW-54-173 ND ND ND NA ND positive ND MW-32-59 NA NA NA NA positive NA MW-54-190 ND ND ND NA ND positive ND MW-32-85 NA NA NA NA positive NA MW-55-24 ND ND ND NA ND positive ND MW-32-149 NA NA NA NA positive NA MW-55-35 ND ND ND NA ND positive ND MW-32-173 NA NA NA NA positive NA MW-55-54 ND ND ND NA ND positive ND MW-32-190 NA NA NA NA positive NA MW-56-53 NA NA NA NA NA positive NA MW-33 NA NA NA NA positive NA MW-56-83 NA NA NA NA NA positive NA MW-35 NA NA NA NA positive NA MW-57-11 NA NA ND NA NA positive ND MW-36-24 NA NA NA NA positive NA MW-57-20 NA NA ND NA NA positive ND MW-36-41 NA NA NA NA positive NA MW-57-45 NA NA ND NA NA positive ND MW-36-52 NA NA NA NA positive NA MW-58-26 NA NA NA NA NA positive NA MW-37-22 NA NA NA NA positive NA MW-58-65 NA NA NA NA NA positive NA MW-37-32 NA NA NA NA positive NA MW-59-32 NA NA NA NA NA NA MW-37-40 NA NA NA NA positive NA MW-59-45 NA NA NA NA NA NA MW-37-57 NA NA NA NA positive NA MW-59-68 NA NA NA NA NA NA MW-39-67 NA NA NA NA positive NA MW-60-35 NA NA NA NA NA positive NA MW-39-84 NA NA NA NA positive NA MW-60-53 ND ND ND NA ND positive ND MW-39-102 NA NA NA NA positive NA MW-60-72 NA NA NA NA NA positive NA MW-39-124 NA NA NA NA positive NA MW-60-135 NA NA NA NA NA positive NA MW-39-183 NA NA NA NA positive NA MW-60-154 NA NA NA NA NA positive NA MW-39-195 NA NA NA NA positive NA MW-60-176 NA NA NA NA NA positive NA MW-40-27 NA NA NA NA positive NA MW-62-18 NA NA NA NA NA positive NA MW-40-46 NA NA NA NA positive NA MW-62-37 NA NA NA NA NA positive NA MW-40-81 NA NA NA NA positive NA MW-62-53 NA NA NA NA NA positive NA MW-40-100 NA NA NA NA positive NA MW-62-71 NA NA NA NA NA positive NA MW-40-127 NA NA NA NA positive NA MW-62-92 NA NA NA NA NA positive NA MW-40-162 NA NA NA NA positive NA MW-62-138 NA NA NA NA NA positive NA MW-41-40 NA NA NA NA positive NA MW-62-182 NA NA NA NA NA positive NA MW-41-63 NA NA NA NA positive NA MW-63-18 NA NA NA NA NA positive NA MW-42-49 4.58E+02 3

4.33E+02 4.22E+02 3.58E+02 3.99E+02 4.18E+02 MW-63-34 NA NA NA NA NA positive NA MW-42-78 ND ND ND ND positive ND MW-63-50 NA NA NA NA NA positive NA MW-43-28 NA NA NA NA positive NA MW-63-93 NA NA NA NA NA positive NA MW-43-62 NA NA NA NA positive NA MW-63-112 NA NA NA NA NA positive NA MW-44-66 NA NA NA NA positive NA MW-63-121 NA NA NA NA NA positive NA MW-44-102 NA NA NA NA positive NA MW-63-163 NA NA NA NA NA positive NA MW-45-42 NA NA NA NA positive NA MW-63-174 NA NA NA NA NA positive NA MW-45-61 NA NA NA NA positive NA MW-66-21 ND ND ND NA ND positive ND MW-46 NA NA NA NA positive NA MW-66-36 ND ND ND NA ND positive ND MW-47-56 NA NA NA NA NA MW-67-39 ND ND ND NA ND positive ND MW-47-80 NA NA NA NA NA MW-67-105 ND ND ND NA ND positive ND MW-49-26 ND ND ND ND positive ND MW-67-173 ND ND ND NA ND positive ND MW-49-42 ND ND ND ND positive ND MW-67-219 ND ND ND NA ND positive ND MW-49-65 ND ND ND ND positive ND MW-67-276 ND ND ND NA ND positive ND MW-50-42 ND ND ND ND positive ND MW-67-323 ND ND ND NA ND positive ND MW-50-66 ND ND ND ND positive ND MW-67-340 ND ND ND NA ND positive ND MW-51-40 NA NA NA NA positive NA MW-68-19 NA NA NA NA NA positive NA MW-51-79 NA NA NA NA positive NA MW-68-29 NA NA NA NA NA positive NA MW-51-104 NA NA NA NA positive NA MW-68-57 NA NA NA NA NA positive NA MW-51-135 NA NA NA NA positive NA MW-68-103 NA NA NA NA NA positive NA MW-51-163 NA NA NA NA positive NA MW-68-132 NA NA NA NA NA positive NA MW-51-189 NA NA NA NA positive NA MW-107 NA NA NA NA NA positive NA MW-52-11 NA NA NA NA positive NA MW-111 NA NA NA NA NA positive NA MW-52-18 NA NA NA NA positive NA U3-4D NA NA NA NA NA positive NA MW-52-48 NA NA NA NA positive NA U3-4S NA NA NA NA NA positive NA MW-52-64 NA NA NA NA positive NA U3-T1 NA NA NA NA NA positive NA MW-52-122 NA NA NA NA positive NA U3-T2 NA NA NA NA NA positive NA MW-52-162 NA NA NA NA positive NA U1-CSS ND ND ND NA NA positive ND MW-52-181 NA NA NA NA positive NA U1-NCD 3.28E+02 2.77E+02 2.58E+02 2.68E+02 3.92E+02 3.05E+02 MW-53-82 ND ND ND ND positive ND U1-SFDS ND ND ND ND ND ND MW-53-120 ND ND ND ND positive ND I-2 NA NA NA NA NA positive NA LAF-002 ND NA ND NA NA positive ND B-1 NA NA NA NA NA NA B-6 NA NA NA NA NA NA MH-5 VCFD NA NA NA NA NA NA

4) ** Standby monitoring installation, for which investigation levels are not applicable.

Well ID Nickel Results (pCi/L) 2014 Investigation Level Rolling Annual Average Notes:

1) Only results greater than the MDC are reported herein. ND therefore indicates that the analytical result was below the MDC and typically also below the standard deviation threshold of three times 1 sigma. The rolling average is calculated using only results greater than the MDC. Given that ND represents real groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

2) A shaded value indicates that the reported activity exceeds the Investigation Level (I.L.) that was applicable at the time of sampling. NA indicates that data is not available for this time period.

3) An aliquot of this sample was re-analyzed for Nickel. The original and aliquot results were 518 pCi/L and 397 pCi/L, respectively (MW-42-49; Q4 2013). In conformance with the LTMP, both results were averaged and the average was used in the annual rolling average calculations.

2014 Investigation Level Nickel Results (pCi/L)

Rolling Annual Average Well ID

3)

• Foundation drain sampling locations, for which investigation levels are not applicable.

shaded value

Storage storage Gravel Gravel Storage No Access Grass Earth Parking Asphalt Asphalt curb Asphalt parking Asphalt Concrete curbs Concrete curb Concrete Concrete curb Wooden curb Grass A/C UNIT Handicap ramp A/C unit on concrete Stone curbs Asphalt drive Asphalt parking Asphalt parking Asphalt parking Asphalt parking Asphalt curb Shrubs Trans.

Transformer area and switch gear Storage Containers A/C Units Grass Concrete curb Grass Shrubs Open grate Tank Asphalt drive Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt drive Asphalt Asphalt Drive Gravel Gravel Transformer yard Asphalt Drive this Area No Access Asphalt Concrete Retaining Wall Stone retaining wall Gravel parking Gravel parking Gravel parking Gravel parking Stone curbs Stone curbs Asphalt parking Concrete curb Asphalt parking Concrete curb curb pad Asphalt curb Asphalt curb Asphalt parking Grass Asphalt curb Asphalt curb Grass Asphalt curb Asphalt parking Gravel parking Storage Storage Tank Fuel Oil Grass Asphalt drive Storage units Gravel Parking lot Asphalt Tank Overhead walkway Concrete curb Asphalt parking Asphalt parking Asphalt Asphalt Asphalt Asphalt Concrete pier Courtyard Asphalt Rip-rap 110 140 120 130 30 30 40 50 30 40 50 90 70 70 80 90 80 80 90 100 110 110 110 110 120 120 100 70 60 70 80 90 60 80 90 100 100 0

110 140 140 Transformer Gravel Storage Tank Fuel Oil Tank Tank Tank Covered Concrete Asphalt parking Condensate Tank Transformers on raised Concrete Pad Trans.

Transformers Concrete slab Tank Grass Transformers on raised Concrete Pad Tank Concrete Bridge Concrete Bridge Storage Tank Transformer Substation "H" Trailer Trans Tank Storage Tank Tank Pit Asphalt Trans Trans Trans Storage Tanks Asphalt Grass Vent pit Mach.

stand Unit 2 Condensate Storage Tank Liquid Nitrogen Transformers Yard (Gravel)

DISCHARGE OUTFALL CANAL Tank Gravel Shrubs Shrubs Shrubs Overhead Crane Grass FUEL TRANSFER POOL STORAGE POOL STORAGE POOL FAILED FUEL AUX. POOL DISASSEMBLY POOL CASK LOAD POOL CASK WASH &

DISASSEMBLY ISOLATION PIT PUMP SUCTION WELL WATER STORAGE POOL ROOF DRAIN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 33' 33' 42.5' 42.5' MH-4 MH-4A MH-5 MH-6 MH-2 B6 B6A B5 B4 B4A B3 B3A B2A B2 B1 A2 A1 U3-MH-14 F5 A2A CB-B CB-E CB-F C-1 C-3 D2 B7 B8 CB-33 CB-34 CB-15 CB-14 CB-13 CB-32 CB-31 CB-30 A7 U1-CB-22 U3-CB (U1-CB-10)

CB-29 U3-CB (U1-CB-9)

U1-CB-21 U1-CB-20 CB-28 CB-24 CB-27 E16 E16 E16A CB-6 CB-5A (CB-6)

CB-5B CB-7 CB-5 MH16 CB-3B CB3A CB4 CB-2C CB3 CB-2B CB-2A CB-2 CB-1 MH18 MH8 MH17 MH7 MH23A CB-16 MH9 MH10 MH11 MH22 MH21 MH13 MH3 MH12 MH1 CB-18 MH15 CB-19 CB-23 MH14 C2 E7 E6 E8 E9 E10 E11 E5 E5A E4 E4 E4A E3B E3 E3A F3 F4 CB E2 E2A F6 F7 E2B E2C E1 A6 A5 A3A A3 A4 E14 E15 E15A (U1-CB-8)

AB E13 E12 D1 CB-17 F2 F1 CB-12 MH-23 MH-19 MH-20 ROOF DRAIN Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard PAB Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL UNIT 1 UNIT 3 Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co Cs Ni Co UTILITY TUNNEL UTILITY TUNNEL CSS CSS TRENCH Cs Ni Co Cs Ni Co Cs Ni Co 50 40 30 20 10 5

50 40 30 20 5

20 13 10 Cs Ni Co B-1 Cs Ni Co B-6 ALL EYW AY U1-SFDS Cs Ni Co U1-NCD Cs Ni Co Cs Ni Co MH-5 VCFD 2

2 2

2 2

3 1

1 1

1 1

1 1

1 1

1 1

1 1

1 5

6 MW-68 Cs Ni Co 7

I-2 HR-1 U3-3 U3-2 U3-1 RW-1 OUT-1 U3-C1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 U3-4S U3-4D MW-52 MW-51 MW-50 MW-49 MW-47 MW-46 MW-45 MW-44 MW-42 MW-41 MW-38 MW-32 MW-31 MW-40 MW-48 MW-43 MW-39 U3-T2 U3-T1 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 9

8 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 16260 46925 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 304.6 417.75 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.1 8.3 7.2 9.45

-1.3 4.68 5.16 6.14 6.02 8.44 3.69 3.76 9.02 0.81 8.94 2.69 3.81 7.88 1.22 33.9 22.7 21.9 10.6 3.13 3.29 6.97 4.06 5.76 6.41 7.45 9.05 8.82 9.02 9.92 2.34 7.06 6.46 7.19 5.55 6.04 5.64 0.49 0.68 0.47 2.52 0.47 0.16 2.04 12.81 35.07 34.43 41.21 44.13 50.75

-1.64

-0.15

-0.48 29.36 37.68 36.17 40.36 49.24 40.66 43.87 44.32 46.83 52.35 54.22 32.72 23.79 24.43 24.79 25.12 25.21 26.96 30.71 31.76 32.15 25.45 26.68 21.51 21.08 22.37 25.16 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-1.19

-1.54

-0.86

-2.26

-0.98

-1.24

-0.13

-0.08

-1.79

-1.69

-1.85

-0.37

-0.85

-1.24

-0.84

-0.15

-0.12

-1.93

-0.14

-0.86

-0.82

-0.02

-1.56

-1.02

-2.59

-2.25

-2.03 115.76 H U D S O N R I V E R 4

DRY ND ND ND ND ND ND ND ND ND ND ND ND 0.29 Plant North N

N 50 0

50 100 150 25 Feet Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: EDC 01.0017869.93 8

INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK 3rd QUARTER 2014 ROLLING AVERAGE CESIUM, COBALT, AND NICKEL ACTIVITY MAP 1

3rd QUARTER 2014 ROLLING AVERAGE CESIUM, COBALT, AND NICKEL ACTIVITY MAP 1

East Fuel Pool LEGEND Notes:

1. Groundwater contours drawn from Q4 2008 groundwater data to show groundwater conditions used for recalibration of the Precipitation Mass Balance Model (see Q2 2009 LTM Report). These contours developed from limited data recorded on 11/11/2008. Actual elevations may vary from conditions shown and the actual distribution of piezometric heads is likely more complex than indicated.

Data Notes:

1. Average Cesium, Cobalt, and Nickel activity values are yearly rolling arithmetic averages of the current and preceding three quarters' data. Only values greater than the MDC are used in this average, thus adding a degree of conservatism to the subsequent dose computations.

2. Foundation drain sampling locations, for which investigation levels are not applicable.

3. Historically elevated Tritium levels in MW-42-49 observed during Q1 2009 were consistent with leakage visually identified on 03/07/2009 (and terminated immediately thereafter) from the waste distillate tank valves located within the Unit 1 fuel storage building. Data trends through Q1 2010 indicate that the observed Tritium peaks in MW-42-49 and downgradient wells associated with this release have dissipated through the groundwater flow system.

4. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with a peak in activity observed in Unit 3 Manhole A2.

This release was initially detected in a storm drain sample collected 03/25/2009 under the 80-10 Effluents Program. Additionally, transient Tritium peaks had been more recently detected in MH-A2 between Q3 2010 and Q3 2011. Elevated Tritium levels observed in downgradient monitoring locations have been consistent with the peaks noted above. Based on investigations initiated in, and ongoing since, 2009, as well as the more recent sampling of the Unit 3 Fuel Storage Building (FSB) roof drains, it has been concluded that these increases in storm drain and monitoring well Tritium activity are due to condensation of SFP evaporation on the FSB roof (Washout) when the exhaust fan was inoperable due to equipment failure. This Tritium washout then entered the roof drain and discharged directly into MH-A2 during rainfall events. Entergy placed the FSB vent fan back in service immediately once repairs could be completed (7-21-2011), and the Tritium activity in MH-A2 returned to baseline conditions within 2 weeks thereafter.

5. Elevated levels of Tritium detected in MH-9 and MH-10a during routine 80-10 Effluents Program sampling on 1/15/2010 appears to have originated from a Q4 2009 transient leak in temporary RWST / R.O. skid connection hoses, which flowed into MH-9. It also appears that this release entered the well vault for MW-32, and may have penetrated the well casings and entered the subsurface around the monitoring installation.

6. Elevated levels of Tritium initially detected in U1-CSS, MW-39, MW-46, MW-54, MW-56 and MW-57 during the Q2-2011 sampling event appear to have originated from a Q2 2011 Sample Sink Overflow and subsequent floor flooding in a Unit 1 Chemical Systems Building sample room on the 53 elevation.

7. Elevated levels of Tritium initially detected in MW-31 during the Q2 2012 sampling event appear to have originated from a leak in an existing Unit 2 Maintenance Outage Building (MOB) drain line. This double contained, stainless steel line was used to service the R.O. skid at its new location in the MOB during the 2012 Unit 2 refueling outage.

8. Elevated levels of Tritium initially detected in MW-42-49, MW-53-82 and U1-CSS during the Q4 2013 sampling event appear to have originated from an overflow of the Unit 1 Containment Spray Annulus (CSA).

9. Elevated levels of Tritium initially detected in Q2 2014 supplemental samples from MW-31 and MW-32. Release originated from transient flooding of the Unit 2 Fan Building 51 floor during 2014 refueling outage discharge of RCS drain down to a partially obstructed floor drain.

General Notes:

1. Base map was developed from an untitled electronic file provided by Badey and Watson Surveying and Engineering, P.C., Dated 2/3/06; CAD file name : "GZA.dwg".

© 2015 - GZA GeoEnvironmental, Inc. J:\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\Q3_2014\\15-03-17 F08 Q3 2014 Rolling Average Cesium, Cobalt, and Nickel Activity Map 17869-93_FINAL.mxd, 3/20/2015, 2:33:17 PM, elaine.donohue 03-20-2015 GZA GeoEnvironmental, Inc.

249 Vanderbilt Avenue Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 Standby Radionuclide Monitoring Installation Longterm Radionuclide Monitoring Installation MW-30 Boring / Monitoring Installation Designation Depth-Specific Data Groundwater elevation for each screened interval at time of low river tide for Q4 2008 (11/11/2008).

1 1

11.3 11.9 12.6 12.8 Screened in Soil Screened in Bedrock Multiple Screened Intervals w/ Depth 6000 836 294 Average activity of Cs 137 (pCi/L) for each screened interval.

37 508 250 194 4

526 207 49 20 Average activity of Co 60 (pCi/L) for each screened interval.

Average activity of Ni 63 (pCi/L) for each screened interval.

Nickel Data1 Cobalt Data1 Cesium Data1 Average Cs, pCi/L Average Co, pCi/L Average Ni, pCi/L Not Detected (ND)

ND - 10 10 - 50 50 - 500 500 - 1,000 1,000 - 5,000

> 5,000 No Depth-Specific Samples ND 4.2 37 294 836 4460 6000 Not Detected (ND)

ND - 25 25 - 100 100 - 200 200 - 300 300 - 500

> 500 No Depth-Specific Samples ND 4

83 194 250 350 508 Not Detected (ND)

ND - 12 12 - 25 25 - 50 50 - 100 100 - 250 250 - 500

> 500 No Depth-Specific Samples ND 4

20 49 54 207 300 526 Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain Probable Legacy Release SSCs Terminated Connection To Storm Drain Drain Exfiltration Inter-Structure Joint / Mud Mat Unit 1 West Fuel Pool (All U1-SFPs drained and inactive as of October 2008)

Unit 2 Fuel Pool (All identified leaks repaired as of December 2007)

Containment Spray Sump Pipe Trench Groundwater Elevation Contours Contours Other Than 10' Interval 5

20 Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 1 1

Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 Supplementary Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 2013 2014 2014 Quarter 2 2014 2014 Quarter 3 2014 2013 2014 2014 Quarter 2 2014 2014 MW-30-69 ND ND ND ND positive ND MW-54-37 ND ND ND NA ND positive ND MW-30-84 ND ND ND ND positive ND MW-54-58 ND ND ND NA ND positive ND MW-31-49 ND ND ND ND positive ND MW-54-123 ND ND ND NA ND positive ND MW-31-63 ND ND ND ND positive ND MW-54-144 ND ND ND NA ND positive ND MW-31-85 ND ND ND ND positive ND MW-54-173 ND ND ND NA ND positive ND MW-32-59 ND ND ND ND positive ND MW-54-190 ND ND ND NA ND positive ND MW-32-85 ND ND ND ND positive ND MW-55-24 ND ND ND NA ND positive ND MW-32-149 ND ND ND ND positive ND MW-55-35 ND ND ND NA ND positive ND MW-32-173 ND ND ND ND NA positive ND MW-55-54 ND ND ND NA ND positive ND MW-32-190 ND ND ND ND NA positive ND MW-56-53 ND ND ND NA NA positive ND MW-33 NA NA ND NA NA NA positive ND MW-56-83 ND ND ND NA NA positive ND MW-35 NA NA ND NA NA NA positive ND MW-57-11 NA NA ND NA NA positive ND MW-36-24 ND ND ND NA ND NA positive ND MW-57-20 NA NA ND NA NA positive ND MW-36-41 ND ND ND NA ND NA positive ND MW-57-45 NA NA ND NA NA positive ND MW-36-52 ND ND ND NA ND NA positive ND MW-58-26 ND NA ND NA NA positive ND MW-37-22 ND ND ND NA ND NA positive ND MW-58-65 ND NA ND NA NA positive ND MW-37-32 ND ND ND NA ND NA positive ND MW-59-32 NA ND NA NA NA ND MW-37-40 ND ND ND NA ND NA positive ND MW-59-45 NA ND NA NA NA ND MW-37-57 ND ND ND NA ND NA positive ND MW-59-68 NA ND NA NA NA ND MW-39-67 ND NA ND NA NA NA positive ND MW-60-35 ND ND ND NA ND positive ND MW-39-84 ND NA ND NA NA NA positive ND MW-60-53 ND ND ND NA ND positive ND MW-39-102 ND NA ND NA NA NA positive ND MW-60-72 ND ND ND NA ND positive ND MW-39-124 ND NA ND NA NA NA positive ND MW-60-135 ND ND ND NA ND positive ND MW-39-183 ND NA ND NA NA NA positive ND MW-60-154 ND ND ND NA ND positive ND MW-39-195 ND NA ND NA NA NA positive ND MW-60-176 ND ND ND NA ND positive ND MW-40-27 ND ND ND NA ND NA positive ND MW-62-18 ND ND ND NA ND positive ND MW-40-46 ND ND ND NA ND NA positive ND MW-62-37 ND ND ND NA ND positive ND MW-40-81 ND ND ND NA ND NA positive ND MW-62-53 ND ND ND NA ND positive ND MW-40-100 ND ND ND NA ND NA positive ND MW-62-71 ND ND ND NA ND positive ND MW-40-127 ND ND ND NA ND NA positive ND MW-62-92 ND ND ND NA ND positive ND MW-40-162 ND ND ND NA ND NA positive ND MW-62-138 ND ND ND NA ND positive ND MW-41-40 ND ND ND NA ND NA positive ND MW-62-182 ND ND ND NA ND positive ND MW-41-63 ND ND ND NA ND NA positive ND MW-63-18 ND ND ND NA ND positive ND MW-42-49 5.32E+04 5.65E+04 5.04E+04 NA 2.76E+04 NA 3.40E+04 4.69E+04 MW-63-34 ND ND ND NA ND positive ND MW-42-78 ND ND ND NA ND NA positive ND MW-63-50 ND ND ND NA ND positive ND MW-43-28 ND ND ND NA ND NA positive ND MW-63-93 ND ND ND NA ND positive ND MW-43-62 ND ND ND NA ND NA positive ND MW-63-112 ND ND ND NA ND positive ND MW-44-66 ND ND ND NA ND NA positive ND MW-63-121 ND ND ND NA ND positive ND MW-44-102 ND ND ND NA ND NA positive ND MW-63-163 ND ND ND NA ND positive ND MW-45-42 ND ND ND NA ND NA positive ND MW-63-174 ND ND ND NA ND positive ND MW-45-61 ND ND ND NA ND NA positive ND MW-66-21 ND ND ND NA ND positive ND MW-46 ND ND ND NA ND NA positive ND MW-66-36 ND ND ND NA ND positive ND MW-47-56 NA ND ND NA NA NA ND MW-67-39 ND ND ND NA ND positive ND MW-47-80 NA ND ND NA NA NA ND MW-67-105 ND ND ND NA ND positive ND MW-49-26 ND ND ND NA ND NA positive ND MW-67-173 ND ND ND NA ND positive ND MW-49-42 ND ND ND NA ND NA positive ND MW-67-219 ND ND ND NA ND positive ND MW-49-65 ND ND ND NA ND NA positive ND MW-67-276 ND ND ND NA ND positive ND MW-50-42 ND ND ND NA ND NA positive ND MW-67-323 ND ND ND NA ND positive ND MW-50-66 ND ND ND NA ND NA positive ND MW-67-340 ND ND ND NA ND positive ND MW-51-40 ND ND ND NA ND NA positive ND MW-68-19 NA ND ND NA ND positive ND MW-51-79 ND ND ND NA ND NA positive ND MW-68-29 NA ND ND NA ND positive ND MW-51-104 ND ND ND NA ND NA positive ND MW-68-57 NA ND ND NA ND positive ND MW-51-135 ND ND ND NA ND NA positive ND MW-68-103 NA ND ND NA ND positive ND MW-51-163 ND ND ND NA ND NA positive ND MW-68-132 NA ND ND NA ND positive ND MW-51-189 ND ND ND NA ND NA positive ND MW-107 NA NA ND NA NA positive ND MW-52-11 NA NA ND NA NA NA positive ND MW-111 ND NA ND NA ND positive ND MW-52-18 NA NA ND NA NA NA positive ND U3-4D ND ND ND NA ND positive ND MW-52-48 NA NA ND NA NA NA positive ND U3-4S ND ND ND NA ND positive ND MW-52-64 NA NA ND NA NA NA positive ND U3-T1 ND ND ND NA ND positive ND MW-52-122 NA NA ND NA NA NA positive ND U3-T2 ND ND ND NA ND positive ND MW-52-162 NA NA ND NA NA NA positive ND U1-CSS ND ND ND NA NA positive ND MW-52-181 NA NA ND NA NA NA positive ND U1-NCD 1.17E+04 1.69E+04 1.43E+04 2.50E+04 1.34E+04 1.63E+04 MW-53-82 ND ND ND NA ND NA positive ND U1-SFDS ND ND ND ND ND ND MW-53-120 ND ND ND NA ND NA positive ND I-2 ND ND ND NA ND positive ND LAF-002 ND NA ND NA NA positive ND B-1 NA NA NA NA NA NA B-6 ND ND ND NA ND ND MH-5 VCFD ND ND ND NA ND ND

5) *** Multiple Sup-Q2 2014 samples were collected. Refer to Table 4 for the laboratory analytical results of these samples.

3)

• Foundation drain sampling locations, for which investigation levels are not applicable.

4) ** Standby monitoring installation, for which investigation levels are not applicable.

Well ID Cesium Results (pCi/L) 2014 Investigation Level Rolling Annual Average Notes:

Cesium Results (pCi/L)

Rolling Annual Average Well ID 2014 Investigation Level

1) Only results greater than the MDC are reported herein. ND therefore indicates that the analytical result was below the MDC and typically also below the standard deviation threshold of three times 1 sigma. The rolling average is calculated using only results greater than the MDC. Given that ND represents real groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

2) A shaded value indicates that the reported activity exceeds the Investigation Level (I.L.) that was applicable at the time of sampling. NA indicates that data is not available for this time period.

shaded value Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 Supplementary Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 2013 2014 2014 Quarter 2 2014 2014 Quarter 3 2014 2013 2014 2014 Quarter 2 2014 2014 MW-30-69 ND ND ND ND positive ND MW-54-37 ND ND ND NA ND positive ND MW-30-84 ND ND ND ND positive ND MW-54-58 ND ND ND NA ND positive ND MW-31-49 ND ND ND ND positive ND MW-54-123 ND ND ND NA ND positive ND MW-31-63 ND ND ND ND positive ND MW-54-144 ND ND ND NA ND positive ND MW-31-85 ND ND ND ND positive ND MW-54-173 ND ND ND NA ND positive ND MW-32-59 ND ND ND ND positive ND MW-54-190 ND ND ND NA ND positive ND MW-32-85 ND ND ND ND positive ND MW-55-24 ND ND ND NA ND positive ND MW-32-149 ND ND ND ND positive ND MW-55-35 ND ND ND NA ND positive ND MW-32-173 ND ND ND ND NA positive ND MW-55-54 ND ND ND NA ND positive ND MW-32-190 ND ND ND ND NA positive ND MW-56-53 ND ND ND NA NA positive ND MW-33 NA NA ND NA NA NA positive ND MW-56-83 ND ND ND NA NA positive ND MW-35 NA NA ND NA NA NA positive ND MW-57-11 NA NA ND NA NA positive ND MW-36-24 ND ND ND NA ND NA positive ND MW-57-20 NA NA ND NA NA positive ND MW-36-41 ND ND ND NA ND NA positive ND MW-57-45 NA NA ND NA NA positive ND MW-36-52 ND ND ND NA ND NA positive ND MW-58-26 ND NA ND NA NA positive ND MW-37-22 ND ND ND NA ND NA positive ND MW-58-65 ND NA ND NA NA positive ND MW-37-32 ND ND ND NA ND NA positive ND MW-59-32 NA ND NA NA NA ND MW-37-40 ND ND ND NA ND NA positive ND MW-59-45 NA ND NA NA NA ND MW-37-57 ND ND ND NA ND NA positive ND MW-59-68 NA ND NA NA NA ND MW-39-67 ND NA ND NA NA NA positive ND MW-60-35 ND ND ND NA ND positive ND MW-39-84 ND NA ND NA NA NA positive ND MW-60-53 ND ND ND NA ND positive ND MW-39-102 ND NA ND NA NA NA positive ND MW-60-72 ND ND ND NA ND positive ND MW-39-124 ND NA ND NA NA NA positive ND MW-60-135 ND ND ND NA ND positive ND MW-39-183 ND NA ND NA NA NA positive ND MW-60-154 ND ND ND NA ND positive ND MW-39-195 ND NA ND NA NA NA positive ND MW-60-176 ND ND ND NA ND positive ND MW-40-27 ND ND ND NA ND NA positive ND MW-62-18 ND ND ND NA ND positive ND MW-40-46 ND ND ND NA ND NA positive ND MW-62-37 ND ND ND NA ND positive ND MW-40-81 ND ND ND NA ND NA positive ND MW-62-53 ND ND ND NA ND positive ND MW-40-100 ND ND ND NA ND NA positive ND MW-62-71 ND ND ND NA ND positive ND MW-40-127 ND ND ND NA ND NA positive ND MW-62-92 ND ND ND NA ND positive ND MW-40-162 ND ND ND NA ND NA positive ND MW-62-138 ND ND ND NA ND positive ND MW-41-40 ND ND ND NA ND NA positive ND MW-62-182 ND ND ND NA ND positive ND MW-41-63 ND ND ND NA ND NA positive ND MW-63-18 ND ND ND NA ND positive ND MW-42-49 ND ND ND NA ND NA positive ND MW-63-34 ND ND ND NA ND positive ND MW-42-78 ND ND ND NA ND NA positive ND MW-63-50 ND ND ND NA ND positive ND MW-43-28 ND ND ND NA ND NA positive ND MW-63-93 ND ND ND NA ND positive ND MW-43-62 ND ND ND NA ND NA positive ND MW-63-112 ND ND ND NA ND positive ND MW-44-66 ND ND ND NA ND NA positive ND MW-63-121 ND ND ND NA ND positive ND MW-44-102 ND ND ND NA ND NA positive ND MW-63-163 ND ND ND NA ND positive ND MW-45-42 ND ND ND NA ND NA positive ND MW-63-174 ND ND ND NA ND positive ND MW-45-61 ND ND ND NA ND NA positive ND MW-66-21 ND ND ND NA ND positive ND MW-46 ND ND ND NA ND NA positive ND MW-66-36 ND ND ND NA ND positive ND MW-47-56 NA ND ND NA NA NA ND MW-67-39 ND ND ND NA ND positive ND MW-47-80 NA ND ND NA NA NA ND MW-67-105 ND ND ND NA ND positive ND MW-49-26 ND ND ND NA ND NA positive ND MW-67-173 ND ND ND NA ND positive ND MW-49-42 ND ND ND NA ND NA positive ND MW-67-219 ND ND ND NA ND positive ND MW-49-65 ND ND ND NA ND NA positive ND MW-67-276 ND ND ND NA ND positive ND MW-50-42 ND ND ND NA ND NA positive ND MW-67-323 ND ND ND NA ND positive ND MW-50-66 ND ND ND NA ND NA positive ND MW-67-340 ND ND ND NA ND positive ND MW-51-40 ND ND ND NA ND NA positive ND MW-68-19 NA ND ND NA ND positive ND MW-51-79 ND ND ND NA ND NA positive ND MW-68-29 NA ND ND NA ND positive ND MW-51-104 ND ND ND NA ND NA positive ND MW-68-57 NA ND ND NA ND positive ND MW-51-135 ND ND ND NA ND NA positive ND MW-68-103 NA ND ND NA ND positive ND MW-51-163 ND ND ND NA ND NA positive ND MW-68-132 NA ND ND NA ND positive ND MW-51-189 ND ND ND NA ND NA positive ND MW-107 NA NA ND NA NA positive ND MW-52-11 NA NA ND NA NA NA positive ND MW-111 ND NA ND NA ND positive ND MW-52-18 NA NA ND NA NA NA positive ND U3-4D ND ND ND NA ND positive ND MW-52-48 NA NA ND NA NA NA positive ND U3-4S ND ND ND NA ND positive ND MW-52-64 NA NA ND NA NA NA positive ND U3-T1 ND ND ND NA ND positive ND MW-52-122 NA NA ND NA NA NA positive ND U3-T2 ND ND ND NA ND positive ND MW-52-162 NA NA ND NA NA NA positive ND U1-CSS ND ND ND NA NA positive ND MW-52-181 NA NA ND NA NA NA positive ND U1-NCD ND ND ND ND ND ND MW-53-82 ND ND ND NA ND NA positive ND U1-SFDS ND ND ND ND ND ND MW-53-120 ND ND ND NA ND NA positive ND I-2 ND ND ND NA ND positive ND LAF-002 ND NA ND NA NA positive ND B-1 NA NA NA NA NA NA B-6 ND ND ND NA ND ND MH-5 VCFD ND ND ND NA ND ND

5) *** Multiple Sup-Q2 2014 samples were collected. Refer to Table 4 for the laboratory analytical results of these samples.

3)

• Foundation drain sampling locations, for which investigation levels are not applicable.

4) ** Standby monitoring installation, for which investigation levels are not applicable.

2014 Investigation Level Notes:

1) Only results greater than the MDC are reported herein. ND therefore indicates that the analytical result was below the MDC and typically also below the standard deviation threshold of three times 1 sigma. The rolling average is calculated using only results greater than the MDC. Given that ND represents real groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

2) A shaded value indicates that the reported activity exceeds the Investigation Level (I.L.) that was applicable at the time of sampling. NA indicates that data is not available for this time period.

Cobalt Results (pCi/L)

Rolling Annual Average Well ID Well ID Cobalt Results (pCi/L) 2014 Investigation Level Rolling Annual Average shaded value Localized Transient Releases Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 03/07/2009 3

(initial)

Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09 4

Transient Spill from Temporary R.O. Skid Piping -

Entered MW-32 Vault and MH 11/21/2009 5

Sample Sink Overflow - Unit 1 Chemical Systems Building - Q2 2011 6

Unit 2 MOB Drain Leak - Q2 2012 7

Unit 1 Containment Spray Annulus (CSA) Overflow 8

Unit 2 Fan Building 51 Floor Drain Overfill 9

Quarter 4 Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 2013 2014 2014 2014 2013 2014 2014 Quarter 2 2014 2014 MW-30-69 NA NA NA NA positive NA MW-54-37 ND ND ND NA ND positive ND MW-30-84 NA NA NA NA positive NA MW-54-58 ND ND ND NA ND positive ND MW-31-49 NA NA NA NA positive NA MW-54-123 ND ND ND NA ND positive ND MW-31-63 NA NA NA NA positive NA MW-54-144 ND ND ND NA ND positive ND MW-31-85 NA NA NA NA positive NA MW-54-173 ND ND ND NA ND positive ND MW-32-59 NA NA NA NA positive NA MW-54-190 ND ND ND NA ND positive ND MW-32-85 NA NA NA NA positive NA MW-55-24 ND ND ND NA ND positive ND MW-32-149 NA NA NA NA positive NA MW-55-35 ND ND ND NA ND positive ND MW-32-173 NA NA NA NA positive NA MW-55-54 ND ND ND NA ND positive ND MW-32-190 NA NA NA NA positive NA MW-56-53 NA NA NA NA NA positive NA MW-33 NA NA NA NA positive NA MW-56-83 NA NA NA NA NA positive NA MW-35 NA NA NA NA positive NA MW-57-11 NA NA ND NA NA positive ND MW-36-24 NA NA NA NA positive NA MW-57-20 NA NA ND NA NA positive ND MW-36-41 NA NA NA NA positive NA MW-57-45 NA NA ND NA NA positive ND MW-36-52 NA NA NA NA positive NA MW-58-26 NA NA NA NA NA positive NA MW-37-22 NA NA NA NA positive NA MW-58-65 NA NA NA NA NA positive NA MW-37-32 NA NA NA NA positive NA MW-59-32 NA NA NA NA NA NA MW-37-40 NA NA NA NA positive NA MW-59-45 NA NA NA NA NA NA MW-37-57 NA NA NA NA positive NA MW-59-68 NA NA NA NA NA NA MW-39-67 NA NA NA NA positive NA MW-60-35 NA NA NA NA NA positive NA MW-39-84 NA NA NA NA positive NA MW-60-53 ND ND ND NA ND positive ND MW-39-102 NA NA NA NA positive NA MW-60-72 NA NA NA NA NA positive NA MW-39-124 NA NA NA NA positive NA MW-60-135 NA NA NA NA NA positive NA MW-39-183 NA NA NA NA positive NA MW-60-154 NA NA NA NA NA positive NA MW-39-195 NA NA NA NA positive NA MW-60-176 NA NA NA NA NA positive NA MW-40-27 NA NA NA NA positive NA MW-62-18 NA NA NA NA NA positive NA MW-40-46 NA NA NA NA positive NA MW-62-37 NA NA NA NA NA positive NA MW-40-81 NA NA NA NA positive NA MW-62-53 NA NA NA NA NA positive NA MW-40-100 NA NA NA NA positive NA MW-62-71 NA NA NA NA NA positive NA MW-40-127 NA NA NA NA positive NA MW-62-92 NA NA NA NA NA positive NA MW-40-162 NA NA NA NA positive NA MW-62-138 NA NA NA NA NA positive NA MW-41-40 NA NA NA NA positive NA MW-62-182 NA NA NA NA NA positive NA MW-41-63 NA NA NA NA positive NA MW-63-18 NA NA NA NA NA positive NA MW-42-49 4.58E+02 3

4.33E+02 4.22E+02 3.58E+02 3.99E+02 4.18E+02 MW-63-34 NA NA NA NA NA positive NA MW-42-78 ND ND ND ND positive ND MW-63-50 NA NA NA NA NA positive NA MW-43-28 NA NA NA NA positive NA MW-63-93 NA NA NA NA NA positive NA MW-43-62 NA NA NA NA positive NA MW-63-112 NA NA NA NA NA positive NA MW-44-66 NA NA NA NA positive NA MW-63-121 NA NA NA NA NA positive NA MW-44-102 NA NA NA NA positive NA MW-63-163 NA NA NA NA NA positive NA MW-45-42 NA NA NA NA positive NA MW-63-174 NA NA NA NA NA positive NA MW-45-61 NA NA NA NA positive NA MW-66-21 ND ND ND NA ND positive ND MW-46 NA NA NA NA positive NA MW-66-36 ND ND ND NA ND positive ND MW-47-56 NA NA NA NA NA MW-67-39 ND ND ND NA ND positive ND MW-47-80 NA NA NA NA NA MW-67-105 ND ND ND NA ND positive ND MW-49-26 ND ND ND ND positive ND MW-67-173 ND ND ND NA ND positive ND MW-49-42 ND ND ND ND positive ND MW-67-219 ND ND ND NA ND positive ND MW-49-65 ND ND ND ND positive ND MW-67-276 ND ND ND NA ND positive ND MW-50-42 ND ND ND ND positive ND MW-67-323 ND ND ND NA ND positive ND MW-50-66 ND ND ND ND positive ND MW-67-340 ND ND ND NA ND positive ND MW-51-40 NA NA NA NA positive NA MW-68-19 NA NA NA NA NA positive NA MW-51-79 NA NA NA NA positive NA MW-68-29 NA NA NA NA NA positive NA MW-51-104 NA NA NA NA positive NA MW-68-57 NA NA NA NA NA positive NA MW-51-135 NA NA NA NA positive NA MW-68-103 NA NA NA NA NA positive NA MW-51-163 NA NA NA NA positive NA MW-68-132 NA NA NA NA NA positive NA MW-51-189 NA NA NA NA positive NA MW-107 NA NA NA NA NA positive NA MW-52-11 NA NA NA NA positive NA MW-111 NA NA NA NA NA positive NA MW-52-18 NA NA NA NA positive NA U3-4D NA NA NA NA NA positive NA MW-52-48 NA NA NA NA positive NA U3-4S NA NA NA NA NA positive NA MW-52-64 NA NA NA NA positive NA U3-T1 NA NA NA NA NA positive NA MW-52-122 NA NA NA NA positive NA U3-T2 NA NA NA NA NA positive NA MW-52-162 NA NA NA NA positive NA U1-CSS ND ND ND NA NA positive ND MW-52-181 NA NA NA NA positive NA U1-NCD 3.28E+02 2.77E+02 2.58E+02 2.68E+02 3.92E+02 3.05E+02 MW-53-82 ND ND ND ND positive ND U1-SFDS ND ND ND ND ND ND MW-53-120 ND ND ND ND positive ND I-2 NA NA NA NA NA positive NA LAF-002 ND NA ND NA NA positive ND B-1 NA NA NA NA NA NA B-6 NA NA NA NA NA NA MH-5 VCFD NA NA NA NA NA NA

4) ** Standby monitoring installation, for which investigation levels are not applicable.

Well ID Nickel Results (pCi/L) 2014 Investigation Level Rolling Annual Average Notes:

1) Only results greater than the MDC are reported herein. ND therefore indicates that the analytical result was below the MDC and typically also below the standard deviation threshold of three times 1 sigma. The rolling average is calculated using only results greater than the MDC. Given that ND represents real groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

2) A shaded value indicates that the reported activity exceeds the Investigation Level (I.L.) that was applicable at the time of sampling. NA indicates that data is not available for this time period.

3) An aliquot of this sample was re-analyzed for Nickel. The original and aliquot results were 518 pCi/L and 397 pCi/L, respectively (MW-42-49; Q4 2013). In conformance with the LTMP, both results were averaged and the average was used in the annual rolling average calculations.

2014 Investigation Level Nickel Results (pCi/L)

Rolling Annual Average Well ID

3)

• Foundation drain sampling locations, for which investigation levels are not applicable.

shaded value