Text

Official Exhibit - ENT00575C-00-BD01 - Quarter 2011 Rolling Average Tritium Activity Map
	ML12340A778
Person / Time
Site:	Indian Point
Issue date:	09/17/2012
From:	; GZA GeoEnvironmental, Entergy Nuclear Operations
To:	; Atomic Safety and Licensing Board Panel
References
	RAS 23568, 50-247-LR, 50-286-LR, ASLBP 07-858-03-LR-BD01
	Download: ML12340A778 (5)
	v • d • e

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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' 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 gr ate 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 Conc rete Retaining Wa ll Stone retaining wall Gravel parking Gravel parking Gravel parking Asphalt parking crete curb Asphalt parking Concrete curb curb pad Asphalt curb alt parking Asphalt curb Asphalt curb Grass alt curb 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 90 100 100 140 140 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 TRAN SFE R PO O L STO RA GE PO O L STO RA GE PO O L FA IL ED FU EL AUX. PO O L DIS ASS EM B LY PO O L CAS K L O AD PO O L CAS K W AS H &

DIS ASS EM B LY ISO L ATIO N PI T PU MP SU CTI ON WELL WATER STO RA GE PO O L 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 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL UNIT 1 UNIT 3 ALL EY WAY UTILITY TUNNEL UTILITY TUNNEL CSS CSS TRENCH MW-30 50 40 30 20 10 5

50 40 30 20 10 5

20 13 B-1 B-6 U1-NCD U1-SFDS 3

3 3

3 MH-5 VCFD 4

5 4

1 1

3 6

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-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 H U D S O N R I V E R ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 136 116 3.17 1.53 1.24 2.43 0.11 8.98 3.52 43.8 6.48 1.99 7.41 8.96 1.72 19.4 29.2 6.88 3.02 4.795 0.617 4.675 1.481 1.844 0.516 3.185 0.531 2.223 0.673 0.691 0.159 0.248 0.163 0.405 4.475 2.492 0.195 2.402 0.464 3.775 9.115 1.972 1.488 1.204 5.783 1.985 1.207 4.444 1.278 6.365 5.443 5.825 4.868 2.253 1.753 0.217 0.276 0.377 0.159 0.191 0.429 0.623 1.124 0.333 0.235 0.435 0.258 37.229 13.314 28.969 0.7735 0.3625 0.1995 0.7452 12.502 0.6498 0.4848 0.8138 10.528 0.6035 0.3363 0.4925 0.6938 0.4028 0.3453 0.3435 0.5513 0.4752 0.4267 0.9695 0.9928 3.6275 0.5577 0.98267 0.91625 34 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 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 45.79 12.81 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48 50.75

-1.64

-0.15

-0.48 29.36 37.68 36.03 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 21.08 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

-0.91

-2.03 115.76 DRY ND 8.42 0.563 1.543 5.615 1.515 3.918 0.524 4.7282 7.0725 28.951 54.447 1.35267 21.51 Plant North N

N 2nd QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP 1

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50 100 150 25 Feet Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS 01.0017869.92 6-Q2 INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 2nd QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP 1

LEGEND Activity Data1,2 Groundwater Elevation Contours Depth-Specific Data Probable Legacy Release SSCs H3 data x1,000 pCi/L No Depth-Specific Samples Bar Graphs; Average H3, pCi/L Not Detected (ND)

ND - 1,000 1,000 - 5,000 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 200,000 100,000 - 200,000 Isopleths; Average H3, pCi/L 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 100,000 ND 0.56 2.8 6.25 32.2 65 155 260 Note: Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99% solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e. fractures).

MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation

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Standby Radionuclide Monitoring Installation

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

Screened in Soil Screened in Bedrock Depth Multiple Screened Intervals 11.3 11.9 12.6 12.8 255.0 56.0 42.3 1.2 Average activity of H3 (pCi/L x1000) for each screened Interval.

Contours Other Than 10' Interval Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 20 5

Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain Groundwater elevation for each screened interval at time of low river tide for Q4 2008 (11/11/2008).

1 1

Vadose Zone Contaminant Transport Data Notes:

1. Average Tritium isopleths and activity values are yearly rolling arithmetic averages of the current and preceeding 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. Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99%

solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e.

fractures).

3. Storm or foundation drain sampling locations, for which investigation levels are not applicable.

4. 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 downgrading wells associated with this release have dissipated through the groundwater flow system.

5. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with an increased 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. This Tritium peak dissipated prior to samples taken during the subsequent quarter. Additionally, transient Tritium peaks have been recently detected in MH-A2 from Q3 2010 to Q2 2011. These increases are consistent with elevated Tritium levels in MW-41-40, MW-46 and B-1. Based on investigations initiated in, and ongoing since, 2009 and 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 is not operating, which then enters the roof drains and discharges directly into MH-A2 during rainfall events.

6. 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.

7. 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.

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.

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".

© 2012 - GZA GeoEnvironmental, Inc. \\\\gzanor\\Jobs\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\2011-comb\\12-08-30 F06 Q2 2011 Rolling Average Tritium Activity Map 17869-92_final.mxd, 9/17/2012, 4:03:21 PM, jennifer.pisani 09-17-2012 5.46E+04

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Transient Spill from Temporary R.O. Skid Piping -

Entered MW-32 Vault and MH Q4 2009 6

Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 3/07/2009 4

Unit 1 West Fuel Pool (All U1-SFPs drained and inactive as of October 2008)

Terminated Connection To Storm Drain Inter-Structure Joint / Mud Mat Drain Exfiltration Containment Spray Sump Trench Sample Sink Overflow - Unit 1 Chemical Systems Building Q2 2011 7XXXX Localized Transient Releases (Surface Spills and Washout)

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Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09(initial)

Quarter 3 Post Quarter 3 Quarter 4 Post Quarter 4 Quarter 1 Post Quarter 1 Quarter 2 Post Quarter 2 Quarter 3 Post Quarter 3 Quarter 4 Post Quarter 4

Quarter 1 Post Quarter 1 Quarter 2 Post Quarter 2 2010 2010 2010 2010 2011 2011 2011 2011 2010 2010 2010 2010 2011 2011 2011 2011 MW-30-69 1.28E+05 1.23E+05_1.11E+05 1.25E+05 NA 1.01E+05 1.08E+05 1.13E+05 1.19E+05 2.14E+05 1.16E+05 MW-54-37 1.21E+03 NA 1.45E+03 NA 1.33E+03 NA 5.16E+03 2.79E+04 2.71E+03 7.41E+03 MW-30-84 9.26E+03 1.00E+04_1.01E+04 1.02E+04 NA 9.20E+03 9.04E+03 7.57E+03 7.55E+03 1.22E+04 9.12E+03 MW-54-58 7.67E+02 NA 8.21E+02 NA 9.58E+02 NA 9.94E+02 2.48E+03 1.48E+03 1.20E+03 MW-31-49 5.46E+03 4.11E+03_ 1.04E+05 3.35E+04 NA 1.06E+03 4.31E+03 1.08E+03 NA 4.28E+04 2.90E+04 MW-54-123 7.83E+02 NA 8.12E+02 NA 1.08E+03 NA 8.24E+02 5.70E+02 1.30E+03 8.14E+02 MW-31-63 6.17E+04 6.69E+04_4.65E+04 2.95E+04 NA 2.46E+04 1.33E+04 1.81E+04 NA 3.99E+04 3.72E+04 MW-54-144 1.44E+03 NA 1.34E+03 NA 1.35E+03 NA 1.48E+03 4.34E+03 2.64E+03 1.99E+03 MW-31-85 6.70E+03 5.07E+03_6.21E+03 6.06E+03 NA 4.83E+03 7.75E+02 3.08E+03 NA 1.46E+04 4.68E+03 MW-54-173 1.53E+03 NA 1.51E+03 NA 1.66E+03 NA 1.26E+03 1.48E+03 3.63E+03 1.49E+03 MW-32-48 3.69E+03 5.90E+03 NA NA NA NA NA NA 5.83E+04***

4.80E+03 MW-54-190 1.60E+03 NA 1.93E+03 NA 1.89E+03 NA 2.07E+03 2.37E+03 3.49E+03 1.97E+03 MW-32-59 6.54E+04 5.78E+03_7.44E+04 1.58E+04 NA 4.39E+03 3.37E+04 3.31E+03 NA 3.42E+04 2.90E+04 MW-55-24 1.21E+03 NA 1.39E+03 NA 1.02E+03 NA NA NA 2.58E+03 1.21E+03 MW-32-85 1.21E+04 1.38E+04_1.44E+04 1.49E+04 NA 1.34E+04 1.32E+04 1.14E+04 NA 1.63E+04 1.33E+04 MW-55-35 1.89E+03 NA 1.57E+03 NA 1.70E+03 NA NA NA 4.38E+03 1.72E+03 MW-32-149 3.81E+03 2.60E+03_2.12E+03 1.55E+03 NA 1.06E+03 8.99E+02 8.69E+02 NA 1.00E+03 1.84E+03 MW-55-54 9.74E+03 NA 8.68E+03 NA 8.46E+03 NA NA NA 1.28E+04 8.96E+03 MW-32-173 2.47E+03 2.19E+03_1.98E+03 1.40E+03 NA 9.02E+02 8.41E+02 5.82E+02 NA 1.50E+03 1.48E+03 MW-56-53 NA NA 4.64E+02 NA NA NA ND ND 1.19E+03 4.64E+02 MW-32-190 1.58E+03 1.69E+03_1.65E+03 1.53E+03 NA 1.64E+03 1.41E+03 1.21E+03 NA 4.21E+03 1.53E+03 MW-56-83 NA NA 2.74E+03 NA NA NA 7.64E+04 8.42E+04 6.39E+03 5.44E+04 MW-33 3.69E+03 3.86E+03 NA NA NA NA NA NA 6.88E+04 3.78E+03 MW-57-11 NA NA NA NA NA NA 6.40E+03 7.36E+03 8.44E+03 6.88E+03 MW-35 NA NA NA NA NA NA NA NA 2.92E+03 NA MW-57-20 NA NA NA NA NA NA 2.03E+04 3.81E+04 3.04E+03 2.92E+04 MW-36-24 2.64E+02 NA 2.62E+03 NA ND NA 3.07E+03 NA 2.56E+03 1.98E+03 MW-57-45 NA NA NA NA NA NA 1.35E+04 2.53E+04 2.38E+03 1.94E+04 MW-36-41 1.30E+04 NA 1.22E+04 NA 8.74E+03 NA 8.17E+03 NA 2.10E+04 1.05E+04 MW-58-26 NA NA 3.66E+02 NA NA NA 7.22E+02 1.86E+03 1.00E+03 9.83E+02 MW-36-52 7.07E+03 NA 7.08E+03 NA 3.14E+03 NA 5.84E+03 NA 1.48E+04 5.78E+03 MW-58-65 NA NA 4.81E+02 NA NA NA ND 7.26E+02 1.00E+03 6.04E+02 MW-37-22 3.70E+03 NA 4.46E+03 NA 6.74E+03 NA 6.87E+03 NA 9.19E+03 5.44E+03 MW-59-32 NA NA NA NA NA NA NA ND ND MW-37-32 4.80E+03 NA 5.99E+03 NA 4.57E+03 NA 4.11E+03 NA 9.32E+03 4.87E+03 MW-59-45 NA NA NA NA NA NA NA 5.24E+02 5.24E+02 MW-37-40 7.00E+03 NA 6.41E+03 NA 5.97E+03 NA 3.92E+03 NA 9.02E+03 5.83E+03 MW-59-68 NA NA NA NA NA NA NA ND ND MW-37-57 7.30E+03 NA 6.72E+03 NA 5.63E+03 NA 5.81E+03 NA 9.62E+03 6.37E+03 MW-60-35 2.35E+02 NA ND NA NA NA ND NA 2.00E+03 2.35E+02 MW-39-67 2.86E+02 NA ND NA NA NA 1.09E+04 2.24E+03 1.00E+03 4.48E+03 MW-60-53 2.58E+02 NA ND NA NA NA ND NA 2.00E+03 2.58E+02 MW-39-84 3.70E+02 NA ND NA NA NA 4.40E+02 ND 1.00E+03 4.05E+02 MW-60-72 ND NA ND NA NA NA ND NA 2.00E+03 ND MW-39-102 2.39E+02 NA ND NA NA NA 1.43E+04 1.24E+04 1.00E+03 8.98E+03 MW-60-135 1.87E+02 NA ND NA 3.98E+02 NA 4.14E+02 NA 2.00E+03 3.33E+02 MW-39-124 ND NA ND NA NA NA ND ND 1.00E+03 ND MW-60-154 2.93E+02 NA 4.68E+02 NA 5.44E+02 NA ND NA 2.00E+03 4.35E+02 MW-39-183 ND NA ND NA NA NA ND ND 1.00E+03 ND MW-60-176 8.13E+02 NA 8.33E+02 NA 1.12E+03 NA 8.99E+02 NA 2.00E+03 9.16E+02 MW-39-195 ND NA ND NA NA NA 7.04E+03 4.19E+03 1.00E+03 5.62E+03 MW-62-18 ND NA ND NA ND NA ND ND 2.00E+03 ND MW-40-27 1.93E+02 NA 2.06E+02 NA ND NA ND ND 1.00E+03 2.00E+02 MW-62-37 1.91E+02 NA ND NA ND NA ND ND 2.00E+03 1.91E+02 MW-40-46 ND NA 1.63E+02 NA ND NA ND ND 1.00E+03 1.63E+02 MW-62-53 1.59E+02 NA ND NA ND NA ND ND 2.00E+03 1.59E+02 MW-40-81 ND NA 2.48E+02 NA ND NA ND ND 1.00E+03 2.48E+02 MW-62-71 3.25E+02 NA 4.17E+02 NA 5.38E+02 NA ND ND 2.00E+03 4.27E+02 MW-40-100 ND NA ND NA ND NA ND ND 1.00E+03 ND MW-62-92 3.18E+02 NA 4.82E+02 NA 5.09E+02 NA 5.06E+02 5.61E+02 2.00E+03 4.75E+02 MW-40-127 ND NA ND NA ND NA ND ND 1.00E+03 ND MW-62-138 5.91E+02 NA ND NA 5.17E+02 NA 6.31E+02 4.66E+02 2.00E+03 5.51E+02 MW-40-162 ND NA ND NA ND NA ND ND 1.00E+03 ND MW-62-182 2.78E+02 NA 4.76E+02 NA ND NA ND ND 2.00E+03 3.77E+02 MW-41-40 2.79E+03 NA 2.43E+03 NA 2.03E+03 NA 4.51E+03 6.99E+02 1.00E+03 2.49E+03 MW-63-18 ND NA 1.97E+02 NA 4.90E+02 NA ND ND 2.00E+03 3.44E+02 MW-41-63 5.18E+02 NA 5.06E+02 NA 1.23E+03 NA 7.58E+02 7.14E+02 1.00E+03 7.45E+02 MW-63-34 1.89E+02 NA 3.41E+02 NA 2.98E+02 NA ND ND 2.00E+03 2.76E+02 MW-42-49 1.69E+03 NA 1.28E+03 NA 1.49E+03 NA 1.71E+03 NA 3.16E+04 1.54E+03 MW-63-50 2.72E+02 NA 3.29E+02 NA 4.35E+02 NA ND ND 2.00E+03 3.45E+02 MW-42-78 6.31E+02 NA 6.13E+02 NA 5.98E+02 NA 6.26E+02 NA 1.00E+03 6.17E+02 MW-63-93 1.95E+02 NA 2.39E+02 NA ND NA ND ND 2.00E+03 2.17E+02 MW-43-28 ND NA 1.95E+02 NA ND NA ND NA 1.00E+03 1.95E+02 MW-63-112 3.71E+02 NA 3.01E+02 NA 3.38E+02 NA ND 6.01E+02 2.00E+03 4.03E+02 MW-43-62 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-63-121 5.39E+02 NA 5.20E+02 NA 5.03E+02 NA 5.77E+02 1.33E+03 2.00E+03 6.94E+02 MW-44-66 1.75E+02 NA 3.10E+02 NA 4.57E+02 NA 6.87E+02 1.62E+03 1.00E+03 6.50E+02 MW-63-163 4.13E+02 NA 4.44E+02 NA 6.05E+02 NA ND 5.08E+02 2.00E+03 4.93E+02 MW-44-102 2.76E+02 NA 4.47E+02 NA 3.93E+02 NA 6.70E+02 6.38E+02 1.00E+03 4.85E+02 MW-63-174 3.33E+02 NA 2.63E+02 NA 4.13E+02 NA ND ND 2.00E+03 3.36E+02 MW-45-42 3.69E+03 NA 2.74E+03 NA 8.12E+03 NA 8.56E+03 3.94E+04 5.90E+03 1.25E+04 MW-65-48 NA NA NA NA NA NA NA ND ND MW-45-61 1.00E+03 NA 1.51E+03 NA 1.84E+03 NA 2.03E+03 5.63E+03 2.65E+03 2.40E+03 MW-65-80 NA NA NA NA NA NA NA ND ND MW-46 1.92E+03 NA 3.13E+03 NA 2.47E+03 NA 5.25E+03 3.08E+03 1.84E+03 3.17E+03 MW-66-21 1.07E+03 NA ND NA 4.77E+02 NA ND NA 1.33E+03 7.74E+02 MW-47-56 NA NA NA NA NA NA NA 3.52E+03 3.52E+03 MW-66-36 3.08E+03 NA 3.13E+03 NA 3.01E+03 NA 3.52E+03 NA 7.71E+03 3.19E+03 MW-47-80 NA NA NA NA NA NA NA 1.36E+05 1.36E+05 MW-67-39 3.37E+03 NA 3.56E+03 NA 3.85E+03 NA 3.73E+03 NA 6.52E+03 3.63E+03 MW-49-26 3.03E+03 NA 2.59E+03 NA 3.17E+03 NA 3.29E+03 NA 6.52E+03 3.02E+03 MW-67-105 1.26E+03 NA 1.14E+03 NA 9.94E+02 NA 1.10E+03 NA 3.92E+03 1.12E+03 MW-49-42 2.27E+03 NA 2.39E+03 NA 2.45E+03 NA 1.90E+03 NA 4.97E+03 2.25E+03 MW-67-173 6.72E+02 NA 6.25E+02 NA ND NA 5.72E+02 NA 1.61E+03 6.23E+02 MW-49-65 1.32E+03 NA 1.37E+03 NA 1.94E+03 NA 2.38E+03 NA 3.03E+03 1.75E+03 MW-67-219 1.11E+03 NA 1.15E+03 NA 6.41E+02 NA 1.07E+03 NA 2.26E+03 9.93E+02 MW-50-42 1.61E+02 NA 8.67E+02 NA 5.61E+02 NA 3.77E+03 1.03E+03 1.04E+03 1.28E+03 MW-67-276 9.33E+02 NA 1.01E+03 NA 8.75E+02 NA 1.06E+03 NA 2.01E+03 9.70E+02 MW-50-66 3.51E+03 NA 3.72E+03 NA 3.76E+03 NA 4.73E+03 6.50E+03 5.90E+03 4.44E+03 MW-67-323 4.32E+02 NA ND NA ND NA 4.26E+02 NA 1.00E+03 4.29E+02 MW-51-40 1.70E+02 NA 1.48E+02 NA ND NA ND NA 1.00E+03 1.59E+02 MW-67-340 4.86E+02 NA 5.31E+02 NA ND NA 6.56E+02 NA 1.01E+03 5.58E+02 MW-51-79 1.10E+02 NA ND NA ND NA ND NA 1.00E+03 1.10E+02 MW-107 NA NA NA NA NA NA ND NA 1.00E+03 ND MW-51-104 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-108 NA NA NA NA NA NA NA 1.24E+03 1.24E+03 MW-51-135 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-109 NA NA NA NA NA NA NA 2.43E+03 2.43E+03 MW-51-163 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-111 3.86E+04 4.69E+04 4.59E+04 NA NA NA NA NA 6.15E+04 4.38E+04 MW-51-189 ND NA ND NA ND NA ND NA 1.00E+03 ND U3-3 NA NA NA NA NA NA NA 6.73E+02 6.73E+02 MW-52-11 NA NA NA NA NA NA ND ND 1.00E+03 ND U3-4D 6.84E+02 NA 7.12E+02 NA 6.28E+02 NA 7.41E+02 ND 1.00E+03 6.91E+02 MW-52-18 NA NA NA NA NA NA ND ND 1.00E+03 ND U3-4S 3.74E+02 NA 3.51E+02 NA NA NA ND ND 1.00E+03***

3.63E+02 MW-52-48 NA NA NA NA NA NA ND ND 1.00E+03 ND U3-T1 3.84E+02 NA 3.04E+02 NA 6.55E+02 NA 7.82E+02 NA 1.00E+03 5.31E+02 MW-52-64 NA NA NA NA NA NA ND ND 1.00E+03 ND U3-T2 8.76E+02 NA 1.47E+03 NA 2.27E+03 NA 3.83E+03 2.67E+03 2.08E+03 2.22E+03 MW-52-122 NA NA NA NA NA NA ND ND 1.00E+03 ND U1-CSS NA NA 2.26E+03 NA NA NA 6.38E+03 1.08E+04 5.17E+03 6.48E+03 MW-52-162 NA NA NA NA NA NA ND 5.16E+02 1.00E+03 5.16E+02 U1-NCD 1.35E+04 NA 3.34E+03 NA NA NA NA NA 8.42E+03 MW-52-181 NA NA NA NA NA NA ND ND 1.00E+03 ND U1-SFDS 6.44E+02 NA 4.82E+02 NA NA NA NA NA 5.63E+02 MW-53-82 2.25E+03 NA 2.59E+03 NA 5.95E+02 NA 6.24E+02 NA 3.83E+03 1.51E+03 I-2 ND NA ND NA NA NA NA NA 1.00E+03***

ND MW-53-120 3.81E+03 NA 3.91E+03 NA 3.84E+03 NA 4.11E+03 NA 1.05E+04 3.92E+03 LAF-002 NA NA ND NA NA NA ND NA positive ND B-1 1.40E+04 NA 2.37E+03 NA 3.82E+03 NA 8.10E+03 NA 7.07E+03 B-6 ND NA ND NA 8.39E+02 NA 2.68E+03 5.39E+02 1.35E+03 MH-5 VCFD 9.96E+03 7.32E+02_8.80E+02 4.60E+02 NA 5.17E+03 NA 1.25E+04 2.97E+03****

4.73E+03

7) **** Four Post-Q2 2011 MH-5 VCFD samples were collected. Their results were: 2.97E+03, 9.86E+03, 2.89E+03 and 1.86E+03. All results are included in the rolling annual average.

3) To be conservative, the 2011 Tritium I.L.s were calculated using (2x the 2009 rolling average) due to an increased Tritium activity observed in multiple Unit 2 wells during 2010 in response to the transient surface spill from the temporary, rental RWST/R.O. processing skid.

Well ID Tritium Results (pCi/L)

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.

4)

Indicates storm or foundation drain sampling locations, for which investigation levels are not applicable.

5) ** Indicates 2011 I.L. not computed for this well due to absence of 2008 through 2010 data.

6) *** Indicates 2011 I.L. computed based on the 2010 rolling average due to absence of 2009 data.

Investigation Level Tritium Results (pCi/L)

Well ID Rolling Annual Average Rolling Annual Average shaded value ENT00575C Submitted: October 2, 2012 United States Nuclear Regulatory Commission Official Hearing Exhibit In the Matter of:

Entergy Nuclear Operations, Inc.

(Indian Point Nuclear Generating Units 2 and 3)

ASLBP #: 07-858-03-LR-BD01 Docket #: 05000247 l 05000286 Exhibit #:

Identified:

Admitted:

Withdrawn:

Rejected:

Stricken:

Other:

ENT00575C-00-BD01 10/15/2012 10/15/2012

G

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XY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XY XYXY XY XY XYXY XYXY XY XYXY XY XY XY XYXY XY XY XYXY XYXY XY XY XYXY XYXY XY XYXY XYXY XY XY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XY XY XYXY XYXY XY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XYXY XYXY XY XYXY XY X

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? @

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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' 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 gr ate 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 Conc rete Retaining Wa ll Stone retaining wall Gravel parking Gravel parking Gravel parking Asphalt parking crete curb Asphalt parking Concrete curb curb pad Asphalt curb alt parking Asphalt curb Asphalt curb Grass alt curb 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 90 100 100 140 140 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 TRAN SFE R PO O L STO RA GE PO O L STO RA GE PO O L FA IL ED FU EL AUX. PO O L DIS ASS EM B LY PO O L CAS K L O AD PO O L CAS K W AS H &

DIS ASS EM B LY ISO L ATIO N PI T PU MP SU CTI ON WELL WATER STO RA GE PO O L 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 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL UNIT 1 UNIT 3 ALL EY WAY UTILITY TUNNEL UTILITY TUNNEL CSS CSS TRENCH MW-30 50 40 30 20 10 5

50 40 30 20 10 5

20 13 B-1 B-6 U1-NCD U1-SFDS 3

3 3

3 MH-5 VCFD 4

5 4

1 1

3 6

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-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 137 3.39 1.51 0.44 0.71 2.03 45.9 6.48 2.27 2.07 27.7 7.01 2.03 0.97 0.53 3.69 3.446 3.913 20.36 1.446 1.073 12.86 15.56 0.234 0.516 0.685 2.578 0.689 0.409 2.845 0.148 0.248 0.163 0.206 9.347 2.053 0.195 3.384 0.464 8.437 2.314 1.482 2.756 1.897 5.188 8.753 8.557 1.373 5.172 1.436 0.769 1.355 5.818 5.648 5.333 4.975 3.255 2.643 0.239 0.412 0.404 0.426 0.961 1.164 0.404 0.499 0.956 0.291 0.516 0.5585 0.8588 0.6305 0.8515 15.233 0.7736 17.204 0.5946 0.8992 13.428 21.133 0.4283 0.4995 0.5305 0.3713 0.3333 0.3435 0.7585 0.5238 0.4897 0.9928 0.6033 0.5353 113.333 0.53367 H U D S O N R I V E R 34 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 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 45.79 12.81 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48 50.75

-1.64

-0.15

-0.48 29.36 37.68 36.03 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 21.08 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

-0.91

-2.03 115.76 DRY 3.6 1.286 8.986 9.477 1.131 4.075 0.882 0.474 3.7565 1.3145 67.085 1.17575 11.30083 21.51 Plant North N

N 3rd QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP 1

50 0

50 100 150 25 Feet Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS 01.0017869.92 6-Q3 INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 3rd QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP 1

LEGEND Activity Data1,2 Groundwater Elevation Contours Depth-Specific Data Probable Legacy Release SSCs H3 data x1,000 pCi/L No Depth-Specific Samples Bar Graphs; Average H3, pCi/L Not Detected (ND)

ND - 1,000 1,000 - 5,000 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 200,000 100,000 - 200,000 Isopleths; Average H3, pCi/L 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 100,000 ND 0.56 2.8 6.25 32.2 65 155 260 Note: Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99% solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e. fractures).

MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation

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Standby Radionuclide Monitoring Installation

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

Screened in Soil Screened in Bedrock Depth Multiple Screened Intervals 11.3 11.9 12.6 12.8 255.0 56.0 42.3 1.2 Average activity of H3 (pCi/L x1000) for each screened Interval.

Contours Other Than 10' Interval Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 20 5

Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain Groundwater elevation for each screened interval at time of low river tide for Q4 2008 (11/11/2008).

1 1

Vadose Zone Contaminant Transport Data Notes:

1. Average Tritium isopleths and activity values are yearly rolling arithmetic averages of the current and preceeding 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. Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99%

solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e.

fractures).

3. Storm or foundation drain sampling locations, for which investigation levels are not applicable.

4. 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 downgrading wells associated with this release have dissipated through the groundwater flow system.

5. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with an increased 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. This Tritium peak dissipated prior to samples taken during the subsequent quarter. Additionally, transient Tritium peaks have been recently detected in MH-A2 from Q3 2010 to Q3 2011. These increases are consistent with elevated Tritium levels in MW-41-40, MW-46 and B-1. Based on investigations initiated in, and ongoing since, 2009 and 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 is not operating, which then enters the roof drains and discharges directly into MH-A2 during rainfall events. As such, Entergy placed the FSB vent fan back in service on 7-21-2011 and the Tritium activity returned to baseline conditions within 2 weeks.

6. 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.

7. 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.

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.

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".

© 2012 - GZA GeoEnvironmental, Inc. \\\\gzanor\\Jobs\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\2011-comb\\12-08-30 F06 Q3 2011 Rolling Average Tritium Activity Map 17869-92_final.mxd, 9/13/2012, 4:16:53 PM, jennifer.pisani 09-13-2012 5.46E+04

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Transient Spill from Temporary R.O. Skid Piping -

Entered MW-32 Vault and MH Q4 2009 6

Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 3/07/2009 4

Unit 1 West Fuel Pool (All U1-SFPs drained and inactive as of October 2008)

Terminated Connection To Storm Drain Inter-Structure Joint / Mud Mat Drain Exfiltration Containment Spray Sump Trench Sample Sink Overflow - Unit 1 Chemical Systems Building Q2 2011 7XXXX Localized Transient Releases (Surface Spills and Washout)

G 5

Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09(initial)

Quarter 4 Post Quarter 4 Quarter 1 Post Quarter 1 Quarter 2 Post Quarter 2 Quarter 3 Post Quarter 3 Quarter 4 Post Quarter 4 Quarter 1 Post Quarter 1

Quarter 2 Post Quarter 2 Quarter 3 Post Quarter 3 2010 2010 2011 2011 2011 2011 2011 2011 2010 2010 2011 2011 2011 2011 2011 2011 MW-30-69 1.25E+05 NA 1.01E+05 1.08E+05 1.13E+05 1.19E+05 1.14E+05 NA 2.14E+05 1.13E+05 MW-54-37 1.45E+03 NA 1.33E+03 NA 5.16E+03 2.79E+04 3.13E+04 NA 2.71E+03 1.34E+04 MW-30-84 1.02E+04 NA 9.20E+03 9.04E+03 7.57E+03 7.55E+03 7.06E+03 NA 1.22E+04 8.44E+03 MW-54-58 8.21E+02 NA 9.58E+02 NA 9.94E+02 2.48E+03 4.23E+03 NA 1.48E+03 1.90E+03 MW-31-49 3.35E+04 NA 1.06E+03 4.31E+03 1.08E+03 NA 4.98E+03 NA 4.28E+04 8.99E+03 MW-54-123 8.12E+02 NA 1.08E+03 NA 8.24E+02 5.70E+02 1.21E+03 NA 1.30E+03 8.99E+02 MW-31-63 2.95E+04 NA 2.46E+04 1.33E+04 1.81E+04 NA 1.63E+04 NA 3.99E+04 2.04E+04 MW-54-144 1.34E+03 NA 1.35E+03 NA 1.48E+03 4.34E+03 5.27E+03 NA 2.64E+03 2.76E+03 MW-31-85 6.06E+03 NA 4.83E+03 7.75E+02 3.08E+03 NA 4.82E+03 NA 1.46E+04 3.91E+03 MW-54-173 1.51E+03 NA 1.66E+03 NA 1.26E+03 1.48E+03 1.50E+03 NA 3.63E+03 1.48E+03 MW-32-48 NA NA NA NA NA NA NA NA 5.83E+04***

NA MW-54-190 1.93E+03 NA 1.89E+03 NA 2.07E+03 2.37E+03 3.31E+03 NA 3.49E+03 2.31E+03 MW-32-59 1.58E+04 NA 4.39E+03 3.37E+04 3.31E+03 NA 2.06E+04 NA 3.42E+04 1.56E+04 MW-55-24 1.39E+03 NA 1.02E+03 NA NA NA 1.71E+03 NA 2.58E+03 1.37E+03 MW-32-85 1.49E+04 NA 1.34E+04 1.32E+04 1.14E+04 NA 1.14E+04 NA 1.63E+04 1.29E+04 MW-55-35 1.57E+03 NA 1.70E+03 NA NA NA 2.94E+03 NA 4.38E+03 2.07E+03 MW-32-149 1.55E+03 NA 1.06E+03 8.99E+02 8.69E+02 NA 9.86E+02 NA 1.00E+03 1.07E+03 MW-55-54 8.68E+03 NA 8.46E+03 NA NA NA 8.53E+03 NA 1.28E+04 8.56E+03 MW-32-173 1.40E+03 NA 9.02E+02 8.41E+02 5.82E+02 NA 5.69E+02 NA 1.50E+03 8.59E+02 MW-56-53 4.64E+02 NA NA NA ND ND NA ND 1.19E+03 4.64E+02 MW-32-190 1.53E+03 NA 1.64E+03 1.41E+03 1.21E+03 NA 1.44E+03 NA 4.21E+03 1.45E+03 MW-56-83 2.74E+03 NA NA NA 7.64E+04 8.42E+04 NA 1.05E+05 6.39E+03 6.71E+04 MW-33 NA NA NA NA NA NA NA NA 6.88E+04 NA MW-57-11 NA NA NA NA 6.40E+03 7.36E+03 NA 7.27E+03 8.44E+03 7.01E+03 MW-35 NA NA NA NA NA NA NA NA 2.92E+03 NA MW-57-20 NA NA NA NA 2.03E+04 3.81E+04 NA 2.47E+04 3.04E+03 2.77E+04 MW-36-24 2.62E+03 NA ND NA 3.07E+03 NA 1.12E+03 NA 2.56E+03 2.27E+03 MW-57-45 NA NA NA NA 1.35E+04 2.53E+04 NA 2.46E+04 2.38E+03 2.11E+04 MW-36-41 1.22E+04 NA 8.74E+03 NA 8.17E+03 NA 5.90E+03 NA 2.10E+04 8.75E+03 MW-58-26 3.66E+02 NA NA NA 7.22E+02 1.86E+03 NA 2.47E+03 1.00E+03 1.35E+03 MW-36-52 7.08E+03 NA 3.14E+03 NA 5.84E+03 NA 4.69E+03 NA 1.48E+04 5.19E+03 MW-58-65 4.81E+02 NA NA NA ND 7.26E+02 NA 1.10E+03 1.00E+03 7.69E+02 MW-37-22 4.46E+03 NA 6.74E+03 NA 6.87E+03 NA 4.52E+03 NA 9.19E+03 5.65E+03 MW-59-32 NA NA NA NA NA ND NA 4.74E+02 4.74E+02 MW-37-32 5.99E+03 NA 4.57E+03 NA 4.11E+03 NA 5.23E+03 NA 9.32E+03 4.98E+03 MW-59-45 NA NA NA NA NA 5.24E+02 NA 1.24E+03 8.82E+02 MW-37-40 6.41E+03 NA 5.97E+03 NA 3.92E+03 NA 5.03E+03 NA 9.02E+03 5.33E+03 MW-59-68 NA NA NA NA NA ND NA ND ND MW-37-57 6.72E+03 NA 5.63E+03 NA 5.81E+03 NA 5.11E+03 NA 9.62E+03 5.82E+03 MW-60-35 ND NA NA NA ND NA 4.99E+02 NA 2.00E+03 4.99E+02 MW-39-67 ND NA NA NA 1.09E+04 2.24E+03 NA 1.49E+04 1.00E+03 9.35E+03 MW-60-53 ND NA NA NA ND NA 5.16E+02 NA 2.00E+03 5.16E+02 MW-39-84 ND NA NA NA 4.40E+02 ND NA ND 1.00E+03 4.40E+02 MW-60-72 ND NA NA NA ND NA 2.91E+02 NA 2.00E+03 2.91E+02 MW-39-102 ND NA NA NA 1.43E+04 1.24E+04 NA 1.90E+04 1.00E+03 1.52E+04 MW-60-135 ND NA 3.98E+02 NA 4.14E+02 NA 4.00E+02 NA 2.00E+03 4.04E+02 MW-39-124 ND NA NA NA ND ND NA ND 1.00E+03 ND MW-60-154 4.68E+02 NA 5.44E+02 NA ND NA 5.89E+02 NA 2.00E+03 5.34E+02 MW-39-183 ND NA NA NA ND ND NA ND 1.00E+03 ND MW-60-176 8.33E+02 NA 1.12E+03 NA 8.99E+02 NA 9.72E+02 NA 2.00E+03 9.56E+02 MW-39-195 ND NA NA NA 7.04E+03 4.19E+03 NA 1.72E+04 1.00E+03 9.48E+03 MW-62-18 ND NA ND NA ND ND 4.04E+02 NA 2.00E+03 4.04E+02 MW-40-27 2.06E+02 NA ND NA ND ND NA NA 1.00E+03 2.06E+02 MW-62-37 ND NA ND NA ND ND ND NA 2.00E+03 ND MW-40-46 1.63E+02 NA ND NA ND ND NA NA 1.00E+03 1.63E+02 MW-62-53 ND NA ND NA ND ND 4.12E+02 NA 2.00E+03 4.12E+02 MW-40-81 2.48E+02 NA ND NA ND ND NA NA 1.00E+03 2.48E+02 MW-62-71 4.17E+02 NA 5.38E+02 NA ND ND 5.14E+02 NA 2.00E+03 4.90E+02 MW-40-100 ND NA ND NA ND ND NA NA 1.00E+03 ND MW-62-92 4.82E+02 NA 5.09E+02 NA 5.06E+02 5.61E+02 5.61E+02 NA 2.00E+03 5.24E+02 MW-40-127 ND NA ND NA ND ND NA NA 1.00E+03 ND MW-62-138 ND NA 5.17E+02 NA 6.31E+02 4.66E+02 1.42E+03 NA 2.00E+03 7.59E+02 MW-40-162 ND NA ND NA ND ND NA NA 1.00E+03 ND MW-62-182 4.76E+02 NA ND NA ND ND 5.84E+02 NA 2.00E+03 5.30E+02 MW-41-40 2.43E+03 NA 2.03E+03 NA 4.51E+03 6.99E+02 5.94E+02 NA 1.00E+03 2.05E+03 MW-63-18 1.97E+02 NA 4.90E+02 NA ND ND ND NA 2.00E+03 3.44E+02 MW-41-63 5.06E+02 NA 1.23E+03 NA 7.58E+02 7.14E+02 6.60E+02 NA 1.00E+03 7.74E+02 MW-63-34 3.41E+02 NA 2.98E+02 NA ND ND 3.61E+02 NA 2.00E+03 3.33E+02 MW-42-49 1.28E+03 NA 1.49E+03 NA 1.71E+03 NA 7.78E+02 NA 3.16E+04 1.31E+03 MW-63-50 3.29E+02 NA 4.35E+02 NA ND ND 3.50E+02 NA 2.00E+03 3.71E+02 MW-42-78 6.13E+02 NA 5.98E+02 NA 6.26E+02 NA 3.97E+02 NA 1.00E+03 5.59E+02 MW-63-93 2.39E+02 NA ND NA ND ND ND NA 2.00E+03 2.39E+02 MW-43-28 1.95E+02 NA ND NA ND NA ND NA 1.00E+03 1.95E+02 MW-63-112 3.01E+02 NA 3.38E+02 NA ND 6.01E+02 8.82E+02 NA 2.00E+03 5.31E+02 MW-43-62 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-63-121 5.20E+02 NA 5.03E+02 NA 5.77E+02 1.33E+03 1.92E+03 NA 2.00E+03 9.70E+02 MW-44-66 3.10E+02 NA 4.57E+02 NA 6.87E+02 1.62E+03 4.76E+02 NA 1.00E+03 7.10E+02 MW-63-163 4.44E+02 NA 6.05E+02 NA ND 5.08E+02 4.41E+02 NA 2.00E+03 5.00E+02 MW-44-102 4.47E+02 NA 3.93E+02 NA 6.70E+02 6.38E+02 8.25E+02 NA 1.00E+03 5.95E+02 MW-63-174 2.63E+02 NA 4.13E+02 NA ND ND 6.09E+02 NA 2.00E+03 4.28E+02 MW-45-42 2.74E+03 NA 8.12E+03 NA 8.56E+03 3.94E+04 NA 2.72E+04 5.90E+03 1.72E+04 MW-65-48 NA NA NA NA NA ND NA NA ND MW-45-61 1.51E+03 NA 1.84E+03 NA 2.03E+03 5.63E+03 NA 5.91E+03 2.65E+03 3.38E+03 MW-65-80 NA NA NA NA NA ND NA NA ND MW-46 3.13E+03 NA 2.47E+03 NA 5.25E+03 3.08E+03 3.30E+03 NA 1.84E+03 3.45E+03 MW-66-21 ND NA 4.77E+02 NA ND NA 7.84E+02 NA 1.33E+03 6.31E+02 MW-47-56 NA NA NA NA NA 3.52E+03 NA 5.42E+02 2.03E+03 MW-66-36 3.13E+03 NA 3.01E+03 NA 3.52E+03 NA 3.90E+03 NA 7.71E+03 3.39E+03 MW-47-80 NA NA NA NA NA 1.36E+05 NA 1.37E+05 1.37E+05 MW-67-39 3.56E+03 NA 3.85E+03 NA 3.73E+03 NA 3.62E+03 NA 6.52E+03 3.69E+03 MW-49-26 2.59E+03 NA 3.17E+03 NA 3.29E+03 NA 3.97E+03 NA 6.52E+03 3.26E+03 MW-67-105 1.14E+03 NA 9.94E+02 NA 1.10E+03 NA 1.42E+03 NA 3.92E+03 1.16E+03 MW-49-42 2.39E+03 NA 2.45E+03 NA 1.90E+03 NA 3.83E+03 NA 4.97E+03 2.64E+03 MW-67-173 6.25E+02 NA ND NA 5.72E+02 NA 6.13E+02 NA 1.61E+03 6.03E+02 MW-49-65 1.37E+03 NA 1.94E+03 NA 2.38E+03 NA 2.43E+03 NA 3.03E+03 2.03E+03 MW-67-219 1.15E+03 NA 6.41E+02 NA 1.07E+03 NA 1.11E+03 NA 2.26E+03 9.93E+02 MW-50-42 8.67E+02 NA 5.61E+02 NA 3.77E+03 1.03E+03 9.52E+02 NA 1.04E+03 1.44E+03 MW-67-276 1.01E+03 NA 8.75E+02 NA 1.06E+03 NA 8.99E+02 NA 2.01E+03 9.61E+02 MW-50-66 3.72E+03 NA 3.76E+03 NA 4.73E+03 6.50E+03 7.15E+03 NA 5.90E+03 5.17E+03 MW-67-323 ND NA ND NA 4.26E+02 NA ND NA 1.00E+03 4.26E+02 MW-51-40 1.48E+02 NA ND NA ND NA ND NA 1.00E+03 1.48E+02 MW-67-340 5.31E+02 NA ND NA 6.56E+02 NA 4.19E+02 NA 1.01E+03 5.35E+02 MW-51-79 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-107 NA NA NA NA ND NA NA NA 1.00E+03 ND MW-51-104 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-108 NA NA NA NA NA 1.24E+03 NA 1.78E+03 1.51E+03 MW-51-135 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-109 NA NA NA NA NA 2.43E+03 NA 3.26E+03 2.85E+03 MW-51-163 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-111 4.59E+04 NA NA NA NA NA NA NA 6.15E+04 4.59E+04 MW-51-189 ND NA ND NA ND NA ND NA 1.00E+03 ND U3-3 NA NA NA NA NA 6.73E+02 NA 1.03E+03 8.52E+02 MW-52-11 NA NA NA NA ND ND NA NA 1.00E+03 ND U3-4D 7.12E+02 NA 6.28E+02 NA 7.41E+02 ND 6.73E+02 NA 1.00E+03 6.89E+02 MW-52-18 NA NA NA NA ND ND NA NA 1.00E+03 ND U3-4S 3.51E+02 NA NA NA ND ND 4.67E+02 NA 1.00E+03***

4.09E+02 MW-52-48 NA NA NA NA ND ND NA NA 1.00E+03 ND U3-T1 3.04E+02 NA 6.55E+02 NA 7.82E+02 NA 1.00E+03 NA 1.00E+03 6.85E+02 MW-52-64 NA NA NA NA ND ND NA NA 1.00E+03 ND U3-T2 1.47E+03 NA 2.27E+03 NA 3.83E+03 2.67E+03 2.65E+03 NA 2.08E+03 2.58E+03 MW-52-122 NA NA NA NA ND ND NA NA 1.00E+03 ND U1-CSS 2.26E+03 NA NA NA 6.38E+03 1.08E+04 NA NA 5.17E+03 6.48E+03 MW-52-162 NA NA NA NA ND 5.16E+02 NA NA 1.00E+03 5.16E+02 U1-NCD 3.34E+03 NA NA NA NA NA 3.86E+03 NA 3.60E+03 MW-52-181 NA NA NA NA ND ND NA NA 1.00E+03 ND U1-SFDS 4.82E+02 NA NA NA NA NA 2.09E+03 NA 1.29E+03 MW-53-82 2.59E+03 NA 5.95E+02 NA 6.24E+02 NA 7.16E+02 NA 3.83E+03 1.13E+03 I-2 ND NA NA NA NA NA 2.34E+02 NA 1.00E+03***

2.34E+02 MW-53-120 3.91E+03 NA 3.84E+03 NA 4.11E+03 NA 4.44E+03 NA 1.05E+04 4.08E+03 LAF-002 ND NA NA NA ND NA NA NA positive ND B-1 2.37E+03 NA 3.82E+03 NA 8.10E+03 NA 7.36E+02 NA 3.76E+03 B-6 ND NA 8.39E+02 NA 2.68E+03 5.39E+02 6.45E+02 NA 1.18E+03 MH-5 VCFD 4.60E+02 NA 5.17E+03 NA 1.25E+04 2.97E+03****

3.9E+03_2.74E+04_2.09E+04 1.4E+04_3.37E+04 1.13E+04

7) **** Four Post-Q2 2011 MH-5 VCFD samples were collected. Their results were: 2.97E+03, 9.86E+03, 2.89E+03 and 1.86E+03. All results are included in the rolling annual average.

3) To be conservative, the 2011 Tritium I.L.s were calculated using (2x the 2009 yearly average) due to an increased Tritium activity observed in multiple Unit 2 wells during 2010 in response to the transient surface spill from the temporary, rental RWST/R.O. processing skid.

Well ID Tritium Results (pCi/L)

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.

4)

Indicates storm or foundation drain sampling locations, for which investigation levels are not applicable.

5) ** Indicates 2011 I.L. not computed for this well due to absence of 2008 through 2010 data.

6) *** Indicates 2011 I.L. computed based on the 2010 yearly average due to absence of 2009 data.

Investigation Level Tritium Results (pCi/L)

Well ID Rolling Annual Average Rolling Annual Average shaded value

G

^

XY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XY XYXY XY XY XYXY XYXY XY XYXY XY XY XY XYXY XY XY XYXY XYXY XY XY XYXY XYXY XY XYXY XYXY XY XY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XY XY XYXY XYXY XY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XYXY XYXY XY XYXY XY X

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? @

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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' 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 gr ate 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 Conc rete Retaining Wa ll Stone retaining wall Gravel parking Gravel parking Gravel parking Asphalt parking crete curb Asphalt parking Concrete curb curb pad Asphalt curb alt parking Asphalt curb Asphalt curb Grass alt curb 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 90 100 100 140 140 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 TRAN SFE R PO O L STO RA GE PO O L STO RA GE PO O L FA IL ED FU EL AUX. PO O L DIS ASS EM B LY PO O L CAS K L O AD PO O L CAS K W AS H &

DIS ASS EM B LY ISO L ATIO N PI T PU MP SU CTI ON WELL WATER STO RA GE PO O L 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 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL UNIT 1 UNIT 3 ALL EY WAY UTILITY TUNNEL UTILITY TUNNEL CSS CSS TRENCH MW-30 50 40 30 20 10 5

50 40 30 20 10 5

20 13 B-1 B-6 U1-NCD U1-SFDS 3

3 3

3 MH-5 VCFD 4

5 4

1 1

3 6

7 MW-68 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-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 123 0.68 2.88 1.51 0.44 1.69 0.81 3.12 11.1 6.36 27.7 7.01 4.56 3.276 3.799 1.432 0.881 18.22 0.234 0.516 0.802 0.681 2.845 7.268 3.494 6.293 7.943 107.7 3.682 1.644 3.858 2.698 4.608 2.095 7.653 2.477 1.767 5.994 1.462 1.192 2.456 5.355 5.775 5.035 3.838 3.273 1.592 0.504 0.363 0.636 0.447 0.374 0.527 0.426 1.005 0.591 1.351 0.404 0.499 0.291 0.516 15.906 11.656 3.4425 0.6305 0.8515 0.6095 11.705 0.8006 16.986 0.7152 1.5208 15.938 21.133 2.7475 0.4917 0.5098 0.7903 0.3925 0.3745 1.2088 0.5376 0.5067 0.9735 3.6775 0.5457 0.54033 1.07275 0.58667 H U D S O N R I V E R 34 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 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 45.79 12.81 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48 50.75

-1.64

-0.15

-0.48 29.36 37.68 36.03 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 21.08 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

-0.91

-2.03 115.76 DRY 8.39 2.055 5.827 1.345 5.366 0.645 5.103 0.882 0.474 84.525 1.17575 4.21867 13.38077 21.51 Plant North N

N 4th QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP 1

50 0

50 100 150 25 Feet Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS 01.0017869.92 6-Q4 INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 4th QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP 1

LEGEND Activity Data1,2 Groundwater Elevation Contours Depth-Specific Data Probable Legacy Release SSCs H3 data x1,000 pCi/L No Depth-Specific Samples Bar Graphs; Average H3, pCi/L Not Detected (ND)

ND - 1,000 1,000 - 5,000 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 200,000 100,000 - 200,000 Isopleths; Average H3, pCi/L 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 100,000 ND 0.56 2.8 6.25 32.2 65 155 260 Note: Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99% solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e. fractures).

MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation

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Standby Radionuclide Monitoring Installation

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

Screened in Soil Screened in Bedrock Depth Multiple Screened Intervals 11.3 11.9 12.6 12.8 255.0 56.0 42.3 1.2 Average activity of H3 (pCi/L x1000) for each screened Interval.

Contours Other Than 10' Interval Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 20 5

Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain Groundwater elevation for each screened interval at time of low river tide for Q4 2008 (11/11/2008).

1 1

Vadose Zone Contaminant Transport Data Notes:

1. Average Tritium isopleths and activity values are yearly rolling arithmetic averages of the current and preceeding 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. Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99%

solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e.

fractures).

3. Storm or foundation drain sampling locations, for which investigation levels are not applicable.

4. 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 downgrading wells associated with this release have dissipated through the groundwater flow system.

5. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with an increased 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. This Tritium peak dissipated prior to samples taken during the subsequent quarter. Additionally, transient Tritium peaks have been recently detected in MH-A2 from Q3 2010 to Q3 2011. These increases are consistent with elevated Tritium levels in MW-41-40, MW-46 and B-1. Based on investigations initiated in, and ongoing since, 2009 and 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 is not operating, which then enters the roof drains and discharges directly into MH-A2 during rainfall events.

As such, Entergy placed the FSB vent fan back in service on 7-21-2011 and the Tritium activity in MH-A2 returned to baseline conditions within 2 weeks.

6. 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.

7. 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.

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.

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".

© 2012 - GZA GeoEnvironmental, Inc. \\\\gzanor\\Jobs\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\2011-comb\\12-08-30 F06 Q4 2011 Rolling Average Tritium Activity Map 17869-92_final.mxd, 9/13/2012, 4:31:05 PM, jennifer.pisani 09-13-2012 5.46E+04

^

Transient Spill from Temporary R.O. Skid Piping -

Entered MW-32 Vault and MH Q4 2009 6

Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 3/07/2009 4

Unit 1 West Fuel Pool (All U1-SFPs drained and inactive as of October 2008)

Terminated Connection To Storm Drain Inter-Structure Joint / Mud Mat Drain Exfiltration Containment Spray Sump Trench Sample Sink Overflow - Unit 1 Chemical Systems Building Q2 2011 7XXXX Localized Transient Releases (Surface Spills and Washout)

G 5

Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09(initial)

Quarter 1 Post Quarter 1 Quarter 2 Post Quarter 2 Quarter 3 Post Quarter 3 Quarter 4 Post Quarter 4 Quarter 1 Post Quarter 1 Quarter 2 Post Quarter 2

Quarter 3 Post Quarter 3 Quarter 4 Post Quarter 4

2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 MW-30-69 1.01E+05 1.08E+05 1.13E+05 1.19E+05 1.14E+05 NA 9.12E+04 NA 2.14E+05 1.08E+05 MW-54-37 1.33E+03 NA 5.16E+03 2.79E+04 3.13E+04 NA 1.40E+04 NA 2.71E+03 1.59E+04 MW-30-84 9.20E+03 9.04E+03 7.57E+03 7.55E+03 7.06E+03 NA 7.24E+03 NA 1.22E+04 7.94E+03 MW-54-58 9.58E+02 NA 9.94E+02 2.48E+03 4.23E+03 NA 4.83E+03 NA 1.48E+03 2.70E+03 MW-31-49 1.06E+03 4.31E+03 1.08E+03 NA 4.98E+03 NA 1.54E+04 NA 4.28E+04 5.37E+03 MW-54-123 1.08E+03 NA 8.24E+02 5.70E+02 1.21E+03 NA 3.92E+03 NA 1.30E+03 1.52E+03 MW-31-63 2.46E+04 1.33E+04 1.81E+04 NA 1.63E+04 NA 7.23E+03 NA 3.99E+04 1.59E+04 MW-54-144 1.35E+03 NA 1.48E+03 4.34E+03 5.27E+03 NA 6.85E+03 NA 2.64E+03 3.86E+03 MW-31-85 4.83E+03 7.75E+02 3.08E+03 NA 4.82E+03 NA 5.49E+03 NA 1.46E+04 3.80E+03 MW-54-173 1.66E+03 NA 1.26E+03 1.48E+03 1.50E+03 NA 2.32E+03 NA 3.63E+03 1.64E+03 MW-32-48 NA NA NA NA NA NA NA NA 5.83E+04***

NA MW-54-190 1.89E+03 NA 2.07E+03 2.37E+03 3.31E+03 NA 8.77E+03 NA 3.49E+03 3.68E+03 MW-32-59 4.39E+03 3.37E+04 3.31E+03 NA 2.06E+04 NA 2.91E+04 NA 3.42E+04 1.82E+04 MW-55-24 1.02E+03 NA NA NA 1.71E+03 NA 2.57E+03 NA 2.58E+03 1.77E+03 MW-32-85 1.34E+04 1.32E+04 1.14E+04 NA 1.14E+04 NA 8.88E+03 NA 1.63E+04 1.17E+04 MW-55-35 1.70E+03 NA NA NA 2.94E+03 NA 2.79E+03 NA 4.38E+03 2.48E+03 MW-32-149 1.06E+03 8.99E+02 8.69E+02 NA 9.86E+02 NA 5.91E+02 NA 1.00E+03 8.81E+02 MW-55-54 8.46E+03 NA NA NA 8.53E+03 NA 5.97E+03 NA 1.28E+04 7.65E+03 MW-32-173 9.02E+02 8.41E+02 5.82E+02 NA 5.69E+02 NA 5.06E+02 NA 1.50E+03 6.80E+02 MW-56-53 NA NA ND ND NA ND ND NA 1.19E+03 ND MW-32-190 1.64E+03 1.41E+03 1.21E+03 NA 1.44E+03 NA 1.46E+03 NA 4.21E+03 1.43E+03 MW-56-83 NA NA 7.64E+04 8.42E+04 NA 1.05E+05 7.25E+04 NA 6.39E+03 8.45E+04 MW-33 NA NA NA NA NA NA NA NA 6.88E+04 NA MW-57-11 NA NA 6.40E+03 7.36E+03 NA 7.27E+03 NA NA 8.44E+03 7.01E+03 MW-35 NA NA NA NA NA NA NA NA 2.92E+03 NA MW-57-20 NA NA 2.03E+04 3.81E+04 NA 2.47E+04 NA NA 3.04E+03 2.77E+04 MW-36-24 ND NA 3.07E+03 NA 1.12E+03 NA ND NA 2.56E+03 2.10E+03 MW-57-45 NA NA 1.35E+04 2.53E+04 NA 2.46E+04 NA NA 2.38E+03 2.11E+04 MW-36-41 8.74E+03 NA 8.17E+03 NA 5.90E+03 NA 2.63E+03 NA 2.10E+04 6.36E+03 MW-58-26 NA NA 7.22E+02 1.86E+03 NA 2.47E+03 4.77E+03 NA 1.00E+03 2.46E+03 MW-36-52 3.14E+03 NA 5.84E+03 NA 4.69E+03 NA 4.76E+03 NA 1.48E+04 4.61E+03 MW-58-65 NA NA ND 7.26E+02 NA 1.10E+03 1.75E+03 NA 1.00E+03 1.19E+03 MW-37-22 6.74E+03 NA 6.87E+03 NA 4.52E+03 NA 4.97E+03 NA 9.19E+03 5.78E+03 MW-59-32 NA NA NA ND NA 4.74E+02 NA NA 4.74E+02 MW-37-32 4.57E+03 NA 4.11E+03 NA 5.23E+03 NA 4.33E+03 NA 9.32E+03 4.56E+03 MW-59-45 NA NA NA 5.24E+02 NA 1.24E+03 NA NA 8.82E+02 MW-37-40 5.97E+03 NA 3.92E+03 NA 5.03E+03 NA 5.22E+03 NA 9.02E+03 5.04E+03 MW-59-68 NA NA NA ND NA ND NA NA ND MW-37-57 5.63E+03 NA 5.81E+03 NA 5.11E+03 NA 4.87E+03 NA 9.62E+03 5.36E+03 MW-60-35 NA NA ND NA 4.99E+02 NA ND NA 2.00E+03 4.99E+02 MW-39-67 NA NA 1.09E+04 2.24E+03 NA 1.49E+04 1.03E+03 NA 1.00E+03 7.27E+03 MW-60-53 NA NA ND NA 5.16E+02 NA ND NA 2.00E+03 5.16E+02 MW-39-84 NA NA 4.40E+02 ND NA ND ND NA 1.00E+03 4.40E+02 MW-60-72 NA NA ND NA 2.91E+02 NA ND NA 2.00E+03 2.91E+02 MW-39-102 NA NA 1.43E+04 1.24E+04 NA 1.90E+04 1.12E+03 NA 1.00E+03 1.17E+04 MW-60-135 3.98E+02 NA 4.14E+02 NA 4.00E+02 NA ND NA 2.00E+03 4.04E+02 MW-39-124 NA NA ND ND NA ND ND NA 1.00E+03 ND MW-60-154 5.44E+02 NA ND NA 5.89E+02 NA 6.27E+02 NA 2.00E+03 5.87E+02 MW-39-183 NA NA ND ND NA ND ND NA 1.00E+03 ND MW-60-176 1.12E+03 NA 8.99E+02 NA 9.72E+02 NA 1.30E+03 NA 2.00E+03 1.07E+03 MW-39-195 NA NA 7.04E+03 4.19E+03 NA 1.72E+04 5.13E+03 NA 1.00E+03 8.39E+03 MW-62-18 ND NA ND ND 4.04E+02 NA 6.50E+02 NA 2.00E+03 5.27E+02 MW-40-27 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-37 ND NA ND ND ND NA 3.74E+02 NA 2.00E+03 3.74E+02 MW-40-46 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-53 ND NA ND ND 4.12E+02 NA 4.82E+02 NA 2.00E+03 4.47E+02 MW-40-81 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-71 5.38E+02 NA ND ND 5.14E+02 NA 4.68E+02 NA 2.00E+03 5.07E+02 MW-40-100 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-92 5.09E+02 NA 5.06E+02 5.61E+02 5.61E+02 NA 5.51E+02 NA 2.00E+03 5.38E+02 MW-40-127 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-138 5.17E+02 NA 6.31E+02 4.66E+02 1.42E+03 NA 3.01E+03 NA 2.00E+03 1.21E+03 MW-40-162 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-182 ND NA ND ND 5.84E+02 NA 6.88E+02 NA 2.00E+03 6.36E+02 MW-41-40 2.03E+03 NA 4.51E+03 6.99E+02 5.94E+02 NA 6.16E+02 NA 1.00E+03 1.69E+03 MW-63-18 4.90E+02 NA ND ND ND NA 2.59E+02 NA 2.00E+03 3.75E+02 MW-41-63 1.23E+03 NA 7.58E+02 7.14E+02 6.60E+02 NA 6.41E+02 NA 1.00E+03 8.01E+02 MW-63-34 2.98E+02 NA ND ND 3.61E+02 NA 4.30E+02 NA 2.00E+03 3.63E+02 MW-42-49 1.49E+03 NA 1.71E+03 NA 7.78E+02 NA 1.40E+03 NA 3.16E+04 1.34E+03 MW-63-50 4.35E+02 NA ND ND 3.50E+02 NA ND NA 2.00E+03 3.93E+02 MW-42-78 5.98E+02 NA 6.26E+02 NA 3.97E+02 NA ND NA 1.00E+03 5.40E+02 MW-63-93 ND NA ND ND ND NA 5.04E+02 NA 2.00E+03 5.04E+02 MW-43-28 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-63-112 3.38E+02 NA ND 6.01E+02 8.82E+02 NA 1.34E+03 NA 2.00E+03 7.90E+02 MW-43-62 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-63-121 5.03E+02 NA 5.77E+02 1.33E+03 1.92E+03 NA 3.63E+03 NA 2.00E+03 1.59E+03 MW-44-66 4.57E+02 NA 6.87E+02 1.62E+03 4.76E+02 NA ND NA 1.00E+03 8.10E+02 MW-63-163 6.05E+02 NA ND 5.08E+02 4.41E+02 NA 4.85E+02 NA 2.00E+03 5.10E+02 MW-44-102 3.93E+02 NA 6.70E+02 6.38E+02 8.25E+02 NA 1.05E+03 NA 1.00E+03 7.15E+02 MW-63-174 4.13E+02 NA ND ND 6.09E+02 NA 4.53E+02 NA 2.00E+03 4.92E+02 MW-45-42 8.12E+03 NA 8.56E+03 3.94E+04 NA 2.72E+04 1.65E+03 NA 5.90E+03 1.70E+04 MW-65-48 NA NA NA ND NA NA NA NA ND MW-45-61 1.84E+03 NA 2.03E+03 5.63E+03 NA 5.91E+03 2.06E+03 NA 2.65E+03 3.49E+03 MW-65-80 NA NA NA ND NA NA NA NA ND MW-46 2.47E+03 NA 5.25E+03 3.08E+03 3.30E+03 NA 2.28E+03 NA 1.84E+03 3.28E+03 MW-66-21 4.77E+02 NA ND NA 7.84E+02 NA ND NA 1.33E+03 6.31E+02 MW-47-56 NA NA NA 3.52E+03 NA 5.42E+02 5.31E+03 NA 3.12E+03 MW-66-36 3.01E+03 NA 3.52E+03 NA 3.90E+03 NA 3.34E+03 NA 7.71E+03 3.44E+03 MW-47-80 NA NA NA 1.36E+05 NA 1.37E+05 9.68E+04 NA 1.23E+05 MW-67-39 3.85E+03 NA 3.73E+03 NA 3.62E+03 NA 3.51E+03 NA 6.52E+03 3.68E+03 MW-49-26 3.17E+03 NA 3.29E+03 NA 3.97E+03 NA 4.92E+03 NA 6.52E+03 3.84E+03 MW-67-105 9.94E+02 NA 1.10E+03 NA 1.42E+03 NA 1.89E+03 NA 3.92E+03 1.35E+03 MW-49-42 2.45E+03 NA 1.90E+03 NA 3.83E+03 NA 4.91E+03 NA 4.97E+03 3.27E+03 MW-67-173 ND NA 5.72E+02 NA 6.13E+02 NA 5.88E+02 NA 1.61E+03 5.91E+02 MW-49-65 1.94E+03 NA 2.38E+03 NA 2.43E+03 NA 4.24E+03 NA 3.03E+03 2.75E+03 MW-67-219 6.41E+02 NA 1.07E+03 NA 1.11E+03 NA 1.20E+03 NA 2.26E+03 1.01E+03 MW-50-42 5.61E+02 NA 3.77E+03 1.03E+03 9.52E+02 NA 9.99E+02 NA 1.04E+03 1.46E+03 MW-67-276 8.75E+02 NA 1.06E+03 NA 8.99E+02 NA 1.06E+03 NA 2.01E+03 9.74E+02 MW-50-66 3.76E+03 NA 4.73E+03 6.50E+03 7.15E+03 NA 7.83E+03 NA 5.90E+03 5.99E+03 MW-67-323 ND NA 4.26E+02 NA ND NA ND NA 1.00E+03 4.26E+02 MW-51-40 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-67-340 ND NA 6.56E+02 NA 4.19E+02 NA 5.62E+02 NA 1.01E+03 5.46E+02 MW-51-79 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-107 NA NA ND NA NA NA NA NA 1.00E+03 ND MW-51-104 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-108 NA NA NA 1.24E+03 NA 1.78E+03 NA NA 1.51E+03 MW-51-135 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-109 NA NA NA 2.43E+03 NA 3.26E+03 NA NA 2.85E+03 MW-51-163 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-111 NA NA NA NA NA NA 1.11E+04 NA 6.15E+04 1.11E+04 MW-51-189 ND NA ND NA ND NA ND NA 1.00E+03 ND U3-3 NA NA NA 6.73E+02 NA 1.03E+03 NA NA 8.52E+02 MW-52-11 NA NA ND ND NA NA NA NA 1.00E+03 ND U3-4D 6.28E+02 NA 7.41E+02 ND 6.73E+02 NA ND NA 1.00E+03 6.81E+02 MW-52-18 NA NA ND ND NA NA NA NA 1.00E+03 ND U3-4S NA NA ND ND 4.67E+02 NA 7.52E+02 NA 1.00E+03***

6.10E+02 MW-52-48 NA NA ND ND NA NA NA NA 1.00E+03 ND U3-T1 6.55E+02 NA 7.82E+02 NA 1.00E+03 NA 7.69E+02 NA 1.00E+03 8.02E+02 MW-52-64 NA NA ND ND NA NA NA NA 1.00E+03 ND U3-T2 2.27E+03 NA 3.83E+03 2.67E+03 2.65E+03 NA 2.98E+03 NA 2.08E+03 2.88E+03 MW-52-122 NA NA ND ND NA NA NA NA 1.00E+03 ND U1-CSS NA NA 6.38E+03 1.08E+04 NA NA 1.70E+03 NA 5.17E+03 6.29E+03 MW-52-162 NA NA ND 5.16E+02 NA NA NA NA 1.00E+03 5.16E+02 U1-NCD NA NA NA NA 3.86E+03 NA 1.13E+04_2.32E+03 NA 5.83E+03 MW-52-181 NA NA ND ND NA NA NA NA 1.00E+03 ND U1-SFDS NA NA NA NA 2.09E+03 NA 2.02E+03_ND NA 2.06E+03 MW-53-82 5.95E+02 NA 6.24E+02 NA 7.16E+02 NA ND NA 3.83E+03 6.45E+02 I-2 NA NA NA NA 2.34E+02 NA ND NA 1.00E+03***

2.34E+02 MW-53-120 3.84E+03 NA 4.11E+03 NA 4.44E+03 NA 8.02E+03 NA 1.05E+04 5.10E+03 LAF-002 NA NA ND NA NA NA ND NA positive ND B-1 3.82E+03 NA 8.10E+03 NA 7.36E+02 NA NA NA 4.22E+03 B-6 8.39E+02 NA 2.68E+03 5.39E+02 6.45E+02 NA ND NA 1.18E+03 MH-5 VCFD 5.17E+03 NA 1.25E+04 2.97E+03****

3.9E+03_2.74E+04_2.09E+04 1.4E+04_3.37E+04 1.48E+04_2.40E+04 NA 1.34E+04

7) **** Four Post-Q2 2011 MH-5 VCFD samples were collected. Their results were: 2.97E+03, 9.86E+03, 2.89E+03 and 1.86E+03. All results are included in the rolling annual average.

3) To be conservative, the 2011 Tritium I.L.s were calculated using (2x the 2009 yearly average) due to an increased Tritium activity observed in multiple Unit 2 wells during 2010 in response to the transient surface spill from the temporary, rental RWST/R.O. processing skid.

Well ID Tritium Results (pCi/L)

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.

4)

Indicates storm or foundation drain sampling locations, for which investigation levels are not applicable.

5) ** Indicates 2011 I.L. not computed for this well due to absence of 2008 through 2010 data.

6) *** Indicates 2011 I.L. computed based on the 2010 yearly average due to absence of 2009 data.

Investigation Level Tritium Results (pCi/L)

Well ID Rolling Annual Average Rolling Annual Average shaded value

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ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cur b Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wa ll wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand it 2 ensate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 VCFD 4

4 1

1 3

5 HUDSON RIVER HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-108 39 ND ND ND 3.55 0.26 2.82 2.07 1.31 3.27 0.42 0.47 5.99 5.65 0.41 3.52 0.26 0.94 0.559 5.479 1.606 1.708 0.218 0.301 0.373 3.215 0.832 0.361 23.55 9.595 1.782 1.682 1.352 0.898 0.914 1.292 6.445 2.138 9.545 1.792 0.879 0.807 3.438 0.737 6.212 6.188 2.948 2.468 1.545 0.587 0.476 0.414 0.242 0.225 0.204 0.438 0.977 1.025 0.658 1.234 0.558 0.334 0.436 0.301 0.302 23.797 13.162 52.846 41.225 12.385 126.125 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 8.42 1.44 2.939 28.81 2.335 2.536 3.915 21.51

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ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wa ll wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand nit 2 densate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 4

4 1

1 3

5 HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-U1-CSS MW-111 MW-10 MW-108 ND ND ND 0.26 2.82 1.75 1.33 7.44 2.19 3.27 1.21 0.38 0.483 7.733 1.699 1.754 4.352 0.218 0.301 0.373 3.618 0.983 0.472 33.58 2.395 8.516 1.723 0.826 0.905 1.325 1.481 8.773 1.605 0.879 0.807 2.993 0.576 0.298 0.499 5.443 5.715 5.398 5.573 3.005 2.435 1.488 0.434 0.651 0.481 0.407 0.278 0.265 0.258 0.442 1.046 0.758 1.628 3.005 0.569 0.309 0.249 0.954 0.237 0.302 29.148 46.463 11.118 68.974 25.663 12.065 128.263 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 HUDSON RIVER 2.14 1.43 2.54 9.485 3.691 4.405 29.793 21.51

^

?

? @

?

ROOF DRA IN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wall wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand nit 2 densate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 4

1 1

3 50 40 30 20 10 5

1 1

5 HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-U1-CSS MW-111 MW-10 MW-108 ND ND ND 1.7 53.5 0.26 2.82 3.27 4.63 0.455 3.283 0.218 0.301 0.373 0.472 47.55 2.395 1.835 7.825 11.34 2.145 7.705 2.425 0.879 0.807 2.865 0.298 0.499 5.965 0.298 1.163 0.852 1.755 2.835 0.274 6.9375 2.9925 1.5385 1.8075 1.2925 1.3775 0.8005 4.7025 5.7425 3.1375 2.5375 1.5675 0.4805 0.6605 0.4715 0.2525 0.4325 0.2555 0.4345 1.37475 29.9125 1.82625 1.02629 9.33143 7.61143 0.78775 0.90825 0.41325 0.28775 1.04175 0.56525 0.34875 1.00825 0.21567 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 HUDSON RIVER 4.29 2.54 3.374 1.1525 4.8025 15.39586 53.95188 27.46667 132.45714 21.51

?

? @

?

ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cur b Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R etain ing Wa ll wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand nit 2 densate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 4

4 1

1 3

50 40 30 20 10 5

1 1

HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-U1-CSS MW-111 MW-10 MW-108 ND 45.2 8.62 0.83 3.61 33.2 1.46 1.78 1.72 6.63 1.58 1.19 1.52 4.22 5.14 0.69 2.98 1.02 0.425 1.969 1.024 8.394 0.147 0.492 0.115 0.143 0.229 0.519 0.911 0.593 3.095 6.499 1.335 0.732 0.795 1.393 7.218 1.387 2.598 3.038 0.559 0.235 0.418 4.815 4.663 4.455 3.188 2.473 1.515 0.545 0.475 0.439 0.325 0.333 0.316 0.421 1.006 1.158 0.869 1.865 0.525 0.324 0.246 0.435 0.173 0.351 29.225 34.913 29.267 10.265 113.743 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 HUDSON RIVER 5.19 4.113 0.884 1.605 3.195 2.634 19.516 21.51

?

? @

?

ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cur b Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R etain ing Wa ll 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand nit 2 densate Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 4

1 1

1 50 40 30 20 101 5

HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-U1-CSS MW-111 MW-10 MW-108 ND ND 8.16 34.4 1.46 0.74 10.5 1.19 1.52 4.22 0.36 3.26 0.23 1.109 0.427 7.306 2.107 0.748 0.307 0.147 0.492 0.115 0.143 0.229 0.519 3.853 0.666 0.593 30.75 2.587 6.107 1.745 1.813 1.318 0.651 1.355 7.423 1.281 6.405 2.188 1.288 2.948 0.519 0.248 0.452 4.808 4.595 4.508 4.658 3.258 2.485 1.515 0.553 0.651 0.474 0.399 0.328 0.356 0.394 1.003 1.128 0.807 1.958 0.507 0.341 1.002 0.444 0.184 0.351 19.929 17.115 107.033 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 HUDSON RIVER 3.278 3.195 1.914 5.246 15.784 21.388 21.51

?

? @

?

ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wa ll 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand nit 2 densate Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 4

1 1

1 40 30 20 101 5

50 HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-U1-CSS MW-111 MW-10 MW-108 ND 21 ND 1.35 0.43 0.45 34.4 1.46 1.77 10.7 6.89 1.16 3.75 2.84 0.39 4.75 4.24 0.55 0.41 0.46 1.11 2.16 0.54 0.23 6.868 2.353 0.834 0.337 8.277 0.147 0.492 0.115 0.143 0.229 0.519 4.133 0.562 52.65 2.428 5.937 1.603 1.253 0.609 0.705 1.268 8.115 0.964 2.128 1.138 1.515 0.556 0.263 4.825 4.125 3.333 2.493 1.415 0.695 0.474 0.359 0.436 0.391 1.036 0.844 3.355 0.368 0.955 0.514 0.184 0.351 16.373 107.933 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 HUDSON RIVER 3.86 3.11 1.947 5.298 13.482 13.167 21.51

?

? @

?

ROOF DRA IN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wall wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand nit 2 densate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 4

3 40 30 20 10 5

50 HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-U1-CSS MW-111 MW-10 MW-108 4

ND ND 1.2 7.1 0.45 51.2 1.46 1.43 1.15 11.3 1.16 3.75 2.69 0.39 4.16 0.67 3.65 0.55 0.455 7.709 3.175 1.057 0.369 7.938 0.147 0.492 0.115 0.143 0.229 0.519 4.623 0.552 4.867 1.815 1.213 0.604 0.654 9.113 0.489 1.761 1.091 1.515 0.327 0.263 5.145 4.033 5.005 3.433 2.453 1.395 0.533 0.528 0.438 0.387 0.464 0.399 0.446 1.097 1.172 0.816 2.258 0.404 0.198 0.921 0.514 0.194 0.499 23.571 15.531 59.733 111.467 6.26 8.81 9.18 4.20 4.89 5.75 5.87 9.20 0.51 0.50 9.26 4.95 9.47 6.71 9.78 2.49 2.72 6.53 3.56 5.17 5.87 6.62 7.25 7.89 9.49 8.06 9.84 2.82 6.09 6.70 7.40 6.56 5.24 6.19 5.32 0.54 0.51 0.57 7.93 1.37 0.11 0.11 3.07 0.28 47.31 40.64 35.75 34.47 43.20 45.40 11.06 11.61 45.62

-1.54

-1.18 33.30 36.98 22.06 24.18 23.43 10.52 13.89 12.82 11.84 10.09

-1.52

-1.82

-0.40

-0.70

-1.03

-0.44

-2.73

-0.91

-1.59

-1.55

-0.43

-0.56

-2.40 HUDSON RIVER 3.11 4.048 2.232 2.004 5.421 13.683 12.065 22.60

?

? @

?

ROOF DRA IN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wall 30 40 50 30 40 50 70 60 70 80 90 Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 3

40 30 20 10 5

50 HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-108 HUDSON RIVER ND ND ND 4.1 1.03 1.13 1.04 1.75 1.49 1.95 6.84 2.51 4.88 0.38 2.35 0.515 5.377 4.258 1.106 0.546 8.358 4.866 0.156 0.145 5.048 0.683 0.399 70.15 63.25 4.343 118.9 1.138 0.605 0.673 1.058 10.13 0.486 1.394 1.068 0.848 1.119 2.725 0.294 0.278 0.379 4.093 5.213 3.937 3.883 2.628 1.543 0.465 0.636 0.501 0.425 0.372 0.472 0.462 1.147 1.169 0.887 3.573 0.568 0.471 0.198 0.855 0.518 0.194 18.533 7.24 9.68 4.11 5.20 6.05 5.78 8.19 9.65 9.47 2.00 2.19 5.89 2.99 5.49 5.75 8.12 7.63 8.35 1.95 5.66 6.68 7.56 6.50 4.45 5.46 4.55 0.44 0.31 1.99 42.10 36.03 34.78 44.12 46.44 10.00 11.86 12.60 46.83

-2.38

-2.07

-0.86

-0.33 33.71 48.19 27.33 26.37 26.51 29.10 10.87 11.23 11.25 11.36 20.46 11.11 10.55 13.13 12.33 10.71 10.63 11.11

-0.25

-0.06

-0.08

-5.66

-3.28

-2.66

-1.33

-1.68

-2.15

-2.03

-1.13

-0.82

-2.86

-1.03

-1.87

-1.62

-0.68

-0.07

-2.43

-1.72

-3.41

-2.99

-1.43

-2.70 ND 5.94 2.98 5.52 9.519 2.088 25.13

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RW-1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-58 MW-1 ROOF DRA IN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wall 30 40 50 30 40 50 70 60 70 80 90 Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 U2-C1 HR-1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 40 30 20 10 5

50 ND ND ND 1.8 2.58 15.8 7.28 5.92 8.79 1.13 5.95 58.5 4.52 5.41 4.51 5.82 4.16 1.65 2.49 3.74 0.47 0.509 3.363 0.767 0.767 6.201 0.156 0.145 0.772 0.331 57.05 1.642 1.693 1.915 1.205 0.606 0.664 1.035 6.878 1.887 1.093 0.848 1.119 2.725 2.995 0.493 0.313 0.295 4.937 0.456 0.684 0.457 0.443 0.369 0.442 0.342 0.465 1.137 1.257 0.952 0.553 0.195 0.793 0.554 0.194 11.633 2.7675 158.625 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 35.07 34.43 39.64 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 49.99 21.08 22.37 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 HUDSON RIVER 2.46 6.19 0.982 1.127 21.51

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RW-1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-58 MW-1 ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wa ll 30 40 50 30 40 50 70 60 70 80 90 Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 U2-C1 HR-1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 40 30 20 10 5

50 ND ND ND ND ND ND ND 0.4 8.5 3.7 3.36 26.6 6.27 9.12 7.58 88.5 56.8 22.2 3.99 1.97 1.49 0.62 6.11 4.61 5.88 2.11 0.36 2.26 0.38 0.436 2.135 3.457 1.274 0.393 0.248 0.247 1.553 0.256 2.935 1.608 4.485 1.968 0.702 0.987 3.208 1.863 0.848 1.323 0.493 0.323 0.583 3.975 5.878 4.555 5.663 3.517 0.705 0.445 0.655 0.439 0.362 0.336 0.376 0.578 1.005 1.149 0.981 4.464 0.437 0.446 0.779 0.529 11.385 183.75 11.625 6.2 6.4 7.16 9.45 9.71 12.3

-1.3 4.21 5.21 5.89 8.65 0.15 0.17 7.82 29.5 9.74 9.76 3.16 3.27 6.92 4.01 5.53 6.16 6.99 7.58 8.22 7.69 8.18 2.83 7.13 7.29 6.64 5.36 6.18 5.36 0.37 1.02 0.68 0.81 0.26

-0.1 0.59 0.06 0.41 0.65 0.41 0.82 35.38 34.52 40.58 42.17 45.39 11.34 45.72

-0.98 32.95 43.22 21.52 22.84 10.55 10.54 10.68 15.39 10.35 12.68 11.77 10.02 10.03

-1.05

-1.25

-0.56

-0.16

-1.35

-0.32

-0.26

-0.96

-0.71

-2.16

-1.94

-0.64

-1.76 HUDSON RIVER 1.76 1.01 5.415 7.183 1.155 0.502 0.318

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RW-1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-58 MW-1 ROOF DRA IN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank drive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access Asphalt Conc ret e R eta in ing Wall 30 40 50 30 40 50 70 60 70 80 90 Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 U2-C1 HR-1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 40 30 20 10 5

50 17 ND ND ND ND ND ND ND 5.7 0.4 157 1.64 2.83 26.3 5.91 4.65 1.29 8.61 8.44 1.81 2.94 88.5 56.8 22.2 3.99 1.61 5.24 2.12 1.93 1.54 0.95 11.3 6.11 9.52 3.55 2.28 1.32 4.61 3.97 6.02 3.91 6.16 4.05 6.23 3.85 2.29 0.49 1.18 2.33 4.61 0.43 0.388 0.393 0.248 0.247 0.256 0.827 0.665 0.848 0.592 0.323 0.583 0.705 0.481 0.635 0.375 0.362 0.312 0.422 0.587 0.972 0.927 0.432 0.473 0.687 0.534 12 5.9 6.4 0.4 0.6 45.4 7.88 9.86

-0.8 4.26 6.55 8.63 8.12 8.77 7.22 9.74 9.59 3.46 3.52 7.13 4.16 5.82 6.45 7.67 7.75 7.52 7.97 9.36 6.22 6.58 6.39 4.83 6.19 4.82 0.34 1.97 0.42 0.67 0.09 0.61 0.34 1.32 35.71 34.55 40.81 42.71 10.06 13.21 12.78 45.99

-1.08

-0.04

-0.22 21.82 23.05 30.15 10.38 10.44 10.37 10.03 12.83

-0.37

-1.57

-1.83

-0.09

-0.56

-0.25

-0.03

-0.37

-0.96

-0.19

-0.14

-0.52

-0.44

-2.03

-1.61

-0.45

-1.67 HUDSON RIVER 1.76 2.88 8.14 1.22 0.502 0.318 22.18

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RW-1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-58 MW-1 ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wa ll 30 40 50 30 40 50 70 60 70 80 90 Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L 20 13 MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 U2-C1 HR-1 UTILITY TUNNEL CSS CSS TRENCH MW-30 40 30 20 10 5

50 ND ND ND ND ND ND ND 4.63 5.89 56.8 22.2 3.99 5.47 1.59 0.91 11.3 6.11 4.61 7.24 4.37 0.59 1.03 2.25 0.38 0.398 1.725 3.209 1.331 0.338 7.907 0.248 0.247 9.025 2.305 0.253 2.935 108.9 2.165 2.083 1.963 0.925 0.671 3.953 2.663 0.848 1.323 4.187 0.215 0.329 0.727 5.817 3.033 5.963 3.143 2.515 0.705 0.484 0.522 0.385 0.369 0.283 0.445 0.802 0.895 1.098 4.965 0.456 0.472 0.694 0.521 29.775 16.433 10.203 153.882 12 5.9 6.4 0.4 0.6 45.4 7.88 9.86

-0.8 4.26 6.55 8.63 8.12 8.77 7.22 9.74 9.59 3.46 3.52 7.13 4.16 5.82 6.45 7.67 7.75 7.52 7.97 9.36 6.22 6.58 6.39 4.83 6.19 4.82 0.34 1.97 0.42 0.67 0.09 0.61 0.34 1.32 35.71 34.55 40.81 42.71 10.06 13.21 12.78 45.99

-1.08

-0.04

-0.22 21.82 23.05 30.15 10.38 10.44 10.37 10.03 12.83

-0.37

-1.57

-1.83

-0.09

-0.56

-0.25

-0.03

-0.37

-0.96

-0.19

-0.14

-0.52

-0.44

-2.03

-1.61

-0.45

-1.67 HUDSON RIVER 1.67 7.283 3.522 8.353 0.286 0.502 0.318 0.3995 22.18 Plant North N

N Plant North N

N

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RW-1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-58 MW-1 0

0 1.89 1.57 0.09 0.15 0.95 0.16 1.15 1.13 0.21 0.14 1.62 1.57 0

0 0

0.1 0.2 0.11 0.17 0.27 0.37 0.23 0.17 2.14 1.36 0.44 1.39 0.55 2.36 1.88 1.29 1.72 0.36 0.17 0.34 0.15 1.36 0.63 0.62 0.63 1.72 2.04 1.42 2.29 0.18 1.93 0.15 3.12 0

0 0

0 2.49 2.12 1.9 1.5 1.2 1.2 1.2 1.2 1.3 0.63 0

13.1 10.3 42.8 8.2 6.7 2.2 7.1 6.0 5.3 9.8 2.9 9.6 9.4 8.6 0.7 0.7 0.9 1.1 0.4 7.1 7.2 8.0 6.0 9.1 10.0 35.6 34.5 22.3 1.0 9.9 9.5 1.4 5.2 8.9 5.7 6.6 9.6 0.6 11.8 12.8 44.1 10.1 21.0 5.5 5.4 5.5 1.3 7.4 7.5 21.8 28.2 1.1 1.1 28.5 39.6 41.6 0.9 1.0 8.9 3.7 9.6 6.9 0.3 0.9 9.9 8.1 8.5 6.0 0.1

-0.5

-0.6 0.3 8.2 1.1 12.46

-0.5 0.8 0.3 1.7 0.8 0.7 1.0 1.1 0.3 0.6 5.1 21.1 Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Conc re te sidewalk Conc. sidewalk Wo od en walk Open gr at e Tank drive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access Asphalt Conc ret e R eta in ing Wall 30 40 50 30 40 50 70 60 70 80 90 Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L 20 13 ND ND ND ND ND ND 0.248 ND 4.61 2.25 0.467 0.819 9.75 4.86 34.2 0.754 11.3 0.502 264 9.1 10.8 5.40 4.32 11.2 11.3 297 302 11.9 107 44.8 119 34.9 17 30.1 276 26.8 24.0 3.51 15.4 4.32 55.2 3.57 11.3 0.76 1.85 13.1 9.04 12.5 3.08 13.2 40.6 4.06 5.76 1.25 0.297 1.89 2.08 0.282 0.679 0.761 0.849 0.278 0.183 0.7 0.208 0.78 9.61 0.369 0.508 0.888 0.856 0.55 0.462 0.76 1.28 0.541 0.313 0.538 0.339 0.392 1.65 1.05 1.86 0.393 1.11 10.5 ROOF DRA IN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 U2-C1 HR-1 2

3 4

UTILITY TUNNEL 5

6 CSS CSS TRENCH 40 30 20 10 5

50 HUDSON RIVER Plant North N

N Plant North N

N Q4 - 2007 Q1 - 2008 Q3 - 2008 Q4 - 2008 Q1 - 2009 Q2 - 2009 Plant North N

N (DATA THROUGH 8/28/07)

(SEE HYDROGEOLOGIC SITE INVESTIGATION REPORT)

BOUNDING UNIT 2 ACTIVITY ISOPLETHS Q3 - 2009 Plant North N

N Q4 - 2009 Plant North N

N Plant North N

N Q1 - 2010 Q2 - 2010 Q3 - 2010 Plant North N

N Plant North N

N

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ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cu rb Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wall wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand nit 2 densate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 VCFD 4

4 1

1 3

5 HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-U1-CSS MW-111 MW-10 MW-108 HUDSON RIVER ND ND 0.26 3.32 2.82 2.07 1.67 1.99 3.27 0.69 0.42 5.69 5.87 5.93 2.86 0.499 7.928 47.65 1.686 1.893 4.531 0.218 0.115 0.301 0.373 0.993 0.361 38.24 9.008 1.703 1.315 0.842 0.901 1.288 7.153 12.59 1.769 9.488 1.608 0.879 0.807 3.208 0.471 6.073 2.405 1.415 0.425 0.675 0.481 0.394 0.277 0.281 0.246 0.449 1.036 1.138 0.711 1.383 3.195 0.568 0.306 0.256 0.907 0.394 0.301 0.302 29.148 12.005 70.248 25.663 132.625 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 4.12 7.437 2.112 1.312 2.335 4.173 28.256 21.51 Q4 - 2010 Plant North N

N

^

XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY X

?

? @

?

ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cur b Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R etain ing Wa ll wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand it 2 ensate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 VCFD 4

4 1

1 3

5 7

HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-108 ND ND ND ND ND ND ND ND ND ND ND 136 116 1.53 1.24 2.43 3.52 43.8 6.48 1.99 7.41 8.96 1.72 19.4 29.2 6.88 3.02 4.795 0.617 4.675 1.481 1.844 0.516 3.185 0.464 3.775 9.115 1.972 1.488 1.204 5.783 1.985 1.207 4.444 1.278 6.365 5.443 5.825 4.868 2.253 1.753 0.377 0.159 0.191 0.429 0.623 1.124 0.333 0.235 0.435 0.258 37.229 13.314 28.969 0.7735 0.8138 10.528 0.6035 0.5513 0.4752 0.4267 0.9695 0.9928 3.6275 0.5577 0.98267 0.91625 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 ND 8.42 1.543 1.515 3.918 0.524 4.7282 28.951 54.447 21.51

^

XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY X

?

? @

?

ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cur b Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wa ll wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand it 2 ensate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 VCFD 4

4 1

1 3

5 7

HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-108 ND ND ND ND ND ND ND ND ND ND 137 3.39 1.51 2.03 45.9 6.48 2.27 2.07 27.7 7.01 2.03 0.53 3.69 3.913 20.36 1.446 1.073 12.86 15.56 0.516 2.845 0.464 8.437 2.314 1.482 2.756 1.897 5.188 8.753 8.557 1.373 5.172 1.436 0.769 1.355 5.818 5.648 5.333 4.975 3.255 2.643 0.412 0.404 0.426 0.961 1.164 0.404 0.499 0.956 0.291 0.516 0.5585 0.8588 0.6305 0.8992 13.428 21.133 0.7585 0.5238 0.4897 0.9928 0.6033 0.5353 113.333 0.53367 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 3.6 8.986 1.131 4.075 0.882 0.474 1.3145 67.085 11.30083 21.51

^

XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY XY X

?

? @

?

ROOF DRAIN E LEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 42.5' Trans.

Transf orm e r are a an d switc h g ear Sto rag e Co nt aine rs A/C Un it s Co nc rete cur b Open gr at e Tank dr ive Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Asph alt Gra vel Gra vel Tran sformer yard this Area No Access As phalt Conc ret e R eta in ing Wa ll wall 30 40 50 30 40 50 70 60 70 80 90 0

Transf orm e rs on r aise d Conc re te Pad Transf orm e rs Conc re te slab Tank Transf orm e rs on r aise d Conc re te Pad Sto rage Tank Traile r Trans Tank Storage Tank Tank P it Asph alt Trans Trans Trans Storage Tanks Ve nt pit Mac h.

stand it 2 ensate ge Tank Liqu id Nitr og en Transf orm e rs Yar d (Gr av el)

Tank Gra vel FU EL TR AN S FE R PO O L ST O RA G E PO O L ST O RA G E PO O L FA IL ED FU E L AU X. P O O L DI S AS S EM B LY PO O L CA S K LO A D PO O L CA S K WA S H &

DI S AS S EM B LY IS O LA TI O N P I T PU MP SU CTI O N WELL WAT ER ST O RA G E PO O L MH-4 MH-4A MH-5 MH-6 MH-2 CB-15 CB-CB-32 CB-31 CB-30 CB-6 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 CB-17 CB-12 MH-23 MH-19 MH-20 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 WEST FUEL POOL UNIT 1 UTILITY TUNNEL CSS CSS TRENCH MW-30 20 13 U1-NCD 3

MH-5 VCFD 4

4 1

1 3

5 7

HR-1 RW-1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 MW-52 MW-50 MW-49 MW-47 MW-42 MW-32 MW-31 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-64 MW-61 MW-6 U1-CSS MW-111 MW-10 MW-108 ND ND ND ND ND ND ND ND ND ND 123 0.68 1.51 3.12 11.1 6.36 27.7 7.01 4.56 3.799 1.432 0.881 18.22 0.516 2.845 6.293 7.943 107.7 3.682 1.644 3.858 2.698 4.608 2.095 7.653 2.477 1.767 5.994 1.462 1.192 2.456 5.355 5.775 5.035 3.838 3.273 0.636 0.447 0.374 0.527 0.426 1.005 0.591 1.351 0.404 0.499 0.291 0.516 15.906 11.656 3.4425 0.6305 1.5208 15.938 21.133 2.7475 1.2088 0.5376 0.5067 0.9735 3.6775 0.5457 0.54033 1.07275 0.58667 0.1 8.3 7.2 7.05 9.45 9.77

-1.3 4.55 5.16 6.14 6.02 8.44 0.29 9.02 7.88 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 45.79 39.64 35.07 34.43 41.21 44.13 11.53 12.16 44.48

-1.64 32.72 21.08 22.37 29.05 10.48 10.54 10.68 12.36 11.71 10.27

-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

-0.91

-2.03 5.827 1.345 5.366 0.645 5.103 0.882 0.474 84.525 13.38077 21.51 Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS/EMD 01.0017869.92 09-17-2012 6A INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 TEMPORAL TRENDS IN UNIT 2 ROLLING AVERAGE TRITIUM ACTIVITY MAPS Groundwater Elevation Contours Vadose Zone Contaminant Transport Contours Other Than 10' Interval 20 5

0 100 200 300 50 Scale in Feet Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 1 1

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.

LEGEND Activity Data1,2 Depth-Specific Data Probable Legacy Release SSCs Note: Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99% solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e. fractures).

MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation

?

Standby Radionuclide Monitoring Installation

?

Screened in Soil Screened in Bedrock Depth Multiple Screened Intervals 11.3 11.9 12.6 12.8 255.0 56.0 42.3 1.2 Average activity of H3 (pCi/L x1000) for each screened Interval.

5,000 - 10,000 10,000 - 50,000 50,000 - 100,000 100,000 - 250,000

>250,000 H3 data x1,000 pCi/L No Depth-Specific Samples Bar Graphs; Average H3, pCi/L Not Detected (ND)

ND - 1,000 1,000 - 5,000 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 200,000 100,000 - 200,000 Isopleths; Average H3, pCi/L ND 0.56 2.8 6.25 32.2 65 155 260 Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain Groundwater elevation for each screened interval at time of low river tide for Q4 2008 (11/11/2008).

1 1

Data Notes:

1. Quarterly Tritium isopleths and activity values are yearly rolling arithmetic averages of the current and preceeding 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. Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99% solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e. fractures).

3. Storm or foundation drain sampling locations, for which investigation levels are not applicable.

4. 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 downgrading wells associated with this release have dissipated through the groundwater flow system.

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 November 21,2009 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. Please refer to Figure 6 for the drawn Unit 1 Tritium plume isopleths. The likely causation of the Q2 2011 Tritium increases in multiple Unit 1 monitoring installations was a transient sample sink overflow in the Unit 1 CSB.

7. 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.

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".

© 2012 - GZA GeoEnvironmental, Inc. J:\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\2011-comb\\12-09-14 F06A Q4 2011 Temporal Trends in Unit 2 Rolling Average Tritium Activity Maps 17869-92_FINAL.mxd, 9/17/2012, 9:23:44 AM, elaine.donohue Localized Transient Releases (Surface Spills and Washout)

4 Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 3/07/2009 Transient Spill from Temporary R.O. Skid Piping -

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

^

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

Unit 1 West Fuel Pool (All U1-SFPs drained and inactive as of October 2008)

Terminated Connection To Storm Drain Drain Exfiltration Inter-Structure Joint / Mud Mat Containment Spray Sump Trench Plant North N

N Q1 - 2011 Q2 - 2011 Q3 - 2011 Plant North N

N Plant North N

N Q4 - 2011 Plant North N

N HUDSON RIVER HUDSON RIVER HUDSON RIVER

GW FLOW DIRECTION 50 40 30 20 10 0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

-180

-190

-200

-210

-220

-230

-240

-250

-260

-270

-280

-290

-300

-310

-320

-330

-340

-350

-360

-370

-380 60 70 80 90 100 IP2-SFP EL. = 0.64 1

1 1

1

- ASSOCIATED WITH TRANSIENT UNIT 1 CSB LEAK Overburden Bedrock Monitoring Well Screened Interval 1.25 Average Activity of H-3 (pCi/L X 1,000) for each Screened Interval (Quarter 4 2011)

Concrete 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000

> 100,000 CONTOUR INTERVAL SOIL ROCK UNIT 2 LEAK COLLECTION DEVICE EVALUATION 4th QUARTER 2011 Groundwater Flow Direction GZA Engineers and Scientists INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK 6B 09-14-2012 01.0017869.92 MJB MJB MJB GAS/EMD ONE EDGEWATER DRIVE NORWOOD, MASSACHUSETTS 02062 (781) 278-3700 UNIT 2 LEAK COLLECTION DEVICE EVALUATION 4th QUARTER 2011 CROSS SECTION A - A' LEGEND Cross-Section extracted from Figure 9.1 in the Final Hydrogeologic Site Investigation Report, (01-07-2008) and updated with current activity data.

0 15' 30' 60' 90' SCALE IN FEET NOTE: H3 DATA PRESENTED ARE 4TH QUARTER 2011 YEARLY ROLLING AVERAGES.

Note: Illustration of contaminant plume is a schematic representation only.

In reality, the geologic bedrock formation is over 99% solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%)

interstitial space (i.e. fractures).

Unsaturated Zone Flow Direction Mud Mat ISOPLETH PLAN Isopleth Plan View Extracted from Figure 6 Notes:

1.

Groundwater contours (plan view) and equipotential lines (cross-section) drawn from Q4 2008 groundwater data to show groundwater conditions used for recalibration of the Precipitation Mass Balance Model. (See Q2 2009 LTM Report) 2.

Groundwater contours developed from limited data available on 11/11/2008. Actual elevations may vary from conditions shown and the actual distribution of piezometric heads is likely more complex than indicated.

3.

MW-32, MW-49, MW-50 & MW-62 are offset and projected onto the section line.

4.

The stratification lines are based upon interpolations between widely spaced borings, and monitoring wells and thus represent the approximate boundaries between soil types. Actual transitions may vary from those shown.

5.

Base map developed from electronic files, prepared by Badey and Watson Surveying &

Engineering PC, Cold Spring, NY 10516. Exact locations and orientations of structures above the water table are approximate and/or have been modified on these sections to better illustrate contaminant source mechanisms and/or migration pathways.

Groundwater Piezometric Head Contours for Q4 2008 (11-11-2008)

Groundwater Table Q4 2008 (11-11-2008) 1 1

1 1

ML12340A778

Text

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