Text

Official Exhibit - ENT00575D-00-BD01 - Quarter 2011 Rolling Average Strontium-90 Activity Map
	ML12340A772
Person / Time
Site:	Indian Point
Issue date:	09/17/2012
From:	; GZA GeoEnvironmental, Entergy Nuclear Operations
To:	; Atomic Safety and Licensing Board Panel
	SECY RAS
References
	RAS 23568, 50-247-LR, 50-286-LR, ASLBP 07-858-03-LR-BD01
	Download: ML12340A772 (5)
	v • d • e

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storage Gravel Gravel Storage No Access Grass Earth Parking Asphalt Asphalt curb Asphalt parking Asphalt Concrete curbs Concrete curb Concrete Concrete curb Wooden curb ass A/C UNIT Handicap ramp A/C unit on concrete Stone curbs Asphalt drive Asphalt parking Asphalt parking alt 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 te curb Asphalt parking Concrete curb curb pad Asphalt curb arking Asphalt curb Asphalt curb Grass 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 ROOF DRAIN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 33' 33' 42.5' 42.5' MH-4 MH-4A MH-5 MH-6 MH-2 B6 B6A B5 B4 B4A B3 B3A B2A B2 B1 A2 A1 U3-MH-14 F5 A2A CB-B CB-E CB-F C-1 C-3 D2 B7 B8 CB-33 CB-34 CB-15 CB-14 CB-13 CB-32 CB-31 CB-30 A7 U1-CB-22 U3-CB (U1-CB-10)

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

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

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

AB E13 E12 D1 CB-17 F2 F1 CB-12 MH-23 MH-19 MH-20 ROOF DRAIN Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL CSS UNIT 1 UNIT 3 ALL EY WAY UTILITY TUNNEL UTILITY TUNNEL 4

4 4

5 CSS TRENCH 50 40 30 20 10 5

50 40 30 20 10 5

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

MH-5 VCFD 3

3 3

3 4

4 4

6 7

1 1

8 I-2 HR-1 U3-3 U3-2 U3-1 RW-1 OUT-1 U3-C1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 U3-4S U3-4D MW-52 MW-51 MW-50 MW-49 MW-47 MW-46 MW-45 MW-44 MW-42 MW-41 MW-38 MW-32 MW-31 MW-40 MW-48 MW-43 MW-39 U3-T2 U3-T1 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 9.1 44.7 0.86 19.8 1.17 2.25 5.51 1.64 5.68 3.86 1.79 4.53 5.05 3.87 1.12 24.6 5.49 15.9 12.1 1.63 2.19 9.86 18.48 11.38 20.23 18.38 12.44 26.45 19.05 10.57 15.88 13.77 19.73 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 ND ND ND 1.3 4.05 1.05 1.65 4.91 1.99 30.5 15.25 10.38 21.51 Plant North N

N 50 0

50 100 150 25 Feet INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 Figure No.:

Job No.:

Dwg. Date:

01.0017869.92 7-Q1 Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS 1st QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1

1st QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1

LEGEND 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).

Groundwater Elevation Contours Screened in Soil Screened in Bedrock 11.3 11.9 12.6 12.8 Multiple Screened Intervals w/ Depth Depth-Specific Data 1.6 20.2 6.0 1.3 Average activity of Sr90 (pCi/L) for each screened interval.

Probable Legacy Release SSCs Activity Data1,2 Bar Graphs; Average Sr-90, pCi/L Not Detected (ND)

ND - 1 1.0 - 2.0 2.0 - 4.0 4.0 - 8.0 8.0 - 25

> 25 ND 0.74 1.7 2.86 5.5 16.1 40.4 No Sample Isopleths; Average Sr-90, pCi/L 2 - 4 4 - 8 8 - 25

> 25 MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation

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Standby Radionuclide Monitoring Installation

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

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

Containment Spray Sump Trench Terminated Connection To Storm Drain Drain Exfiltration Inter-Structure Joint / Mud Mat Contours Other Than 10' Interval 20 5

6 Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 3/07/2009 Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain G

7 Groundwater elevation for each screened interval at time of low river tide for Q4 2008 (11/11/2008).

1 1

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

Vadose Zone Contaminant Transport Transient Spill from Temporary R.O. Skid Piping -

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

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8 Data Notes:

1. Average Sr-90 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. Two discrete isopleths have been drawn around MW-39 and MW-41 given average concentrations greater than 2 pCi/L. It is expected that similar concentrations exist at other locations along the legacy piping alignment in addition to the locations shown.

5. Sr-90 activity at MW-111 may be due to desorption of residual Sr-90 from backfill used in the Transformer Yard.

6. 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.

7. 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 Q1 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.

8. 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 11/21/2009 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.

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 F07 Q1 2011 Rolling Average Strontium-90 Activity Map 17869-92_final.mxd, 9/17/2012, 4:25:51 PM, jennifer.pisani 09-17-2012 Localized Transient Releases (Surface Spills and Washout)

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

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 Quarter 1 Post Quarter 1 2010 2010 2010 2010 2010 2010 2011 2011 2010 2010 2010 2010 2010 2010 2011 2011 MW-30-69 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-53-82 ND NA ND NA ND NA ND NA 4.46E+00 ND MW-30-84 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-53-120 3.32E+01 NA 2.97E+01 NA 2.96E+01 NA 2.95E+01 NA 6.60E+01 3.05E+01 MW-31-49 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-54-37 4.71E+00 NA 4.00E+00 NA 4.51E+00 NA 4.88E+00 NA 9.20E+00 4.53E+00 MW-31-63 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-54-58 1.44E+00 NA 1.36E+00 NA 2.67E+00 NA 1.68E+00 NA 3.43E+00 1.79E+00 MW-31-85 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-54-123 2.25E+00 NA 2.98E+00 NA 7.65E+00 NA 2.56E+00 NA 8.14E+00 3.86E+00 MW-32-48 ND NA ND ND NA NA ND ND 2.00E+00 ND MW-54-144 1.37E+01 NA 1.17E+01 NA 1.08E+01 NA 9.31E+00 NA 2.53E+01 1.14E+01 MW-32-59 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-54-173 6.28E+00 NA 5.97E+00 NA 4.65E+00 NA 5.81E+00 NA 1.22E+01 5.68E+00 MW-32-85 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-54-190 2.22E+01 NA 1.57E+01 NA 1.92E+01 NA 1.68E+01 NA 4.03E+01 1.85E+01 MW-32-149 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-55-24 1.94E+01 NA 8.64E+00 NA 1.08E+01 NA 1.09E+01 NA 2.97E+01 1.24E+01 MW-32-173 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-55-35 2.63E+01 NA 1.66E+01 NA 1.13E+01 NA 1.93E+01 NA 4.26E+01 1.84E+01 MW-32-190 ND ND ND ND/ND ND NA ND ND 2.00E+00 ND MW-55-54 2.32E+01 NA 1.93E+01 NA 1.93E+01 NA 1.91E+01 NA 3.93E+01 2.02E+01 MW-33 ND NA ND ND NA NA NA NA 2.00E+00 ND MW-56-53 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-35 NA ND NA NA NA NA NA NA 2.00E+00 NA MW-56-83 1.99E+00 NA ND NA ND NA NA NA 3.98E+00 1.99E+00 MW-36-24 ND ND ND NA ND NA ND NA 2.00E+00 ND MW-57-11 2.46E+01 NA ND NA NA NA NA NA 4.92E+01 2.46E+01 MW-36-41 5.95E+00 NA 1.88E+00 NA 3.54E+00 NA 4.11E+00 NA 7.99E+00 3.87E+00 MW-57-20 1.12E+00 NA ND NA NA NA NA NA 2.24E+00 1.12E+00 MW-36-52 5.36E+00 NA ND NA 4.73E+00 NA ND NA 8.14E+00 5.05E+00 MW-57-45 1.30E+00 NA ND NA NA NA NA NA 2.60E+00 1.30E+00 MW-37-22 1.29E+01 NA 5.19E+00 NA 1.38E+01 NA 1.04E+01 NA 2.20E+01 1.06E+01 MW-58-26 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-37-32 1.87E+01 NA 1.41E+01 NA ND NA 1.49E+01 NA 3.54E+01 1.59E+01 MW-58-65 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-37-40 1.71E+01 NA 1.43E+01 NA 1.28E+01 NA 1.93E+01 NA 2.84E+01 1.59E+01 MW-60-35 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-37-57 1.90E+01 NA 1.73E+01 NA 1.97E+01 NA 2.02E+01 NA 3.68E+01 1.91E+01 MW-60-53 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-39-67 1.26E+00 NA 1.73E+00 NA 1.96E+00 NA NA NA 3.30E+00 1.65E+00 MW-60-72 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-39-84 1.26E+00 NA 8.43E-01 NA ND NA NA NA 2.10E+00 1.05E+00 MW-60-135 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-39-102 ND NA 4.05E+00 NA ND NA NA NA 8.10E+00 4.05E+00 MW-60-154 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-39-124 ND NA 2.25E+00 NA ND NA NA NA 4.50E+00 2.25E+00 MW-60-176 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-39-183 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-62-18 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-195 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-62-37 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-40-27 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-53 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-40-46 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-71 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-40-81 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-92 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-40-100 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-138 1.28E+00 NA 1.47E+00 NA ND NA 2.15E+00 NA 2.42E+00 1.63E+00 MW-40-127 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-182 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-40-162 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-18 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-41-40 2.09E+00 NA 4.37E+00 NA 4.08E+00 NA 1.15E+01 NA 7.28E+00 5.51E+00 MW-63-34 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-41-63 3.66E+00 NA 4.79E+00 NA 4.25E+00 NA 6.92E+00 NA 7.36E+00 4.91E+00 MW-63-50 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-42-49 2.40E+01 NA 1.39E+01 NA 1.81E+01 NA 2.32E+01 NA 9.00E+01 1.98E+01 MW-63-93 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-42-78 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-112 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-43-28 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-121 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-43-62 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-163 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-44-66 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-63-174 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-44-102 NA ND ND NA ND NA ND NA 2.00E+00 ND MW-66-21 ND NA 1.17E+00 NA ND NA ND NA 2.07E+00 1.17E+00 MW-45-42 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-66-36 7.05E+00 NA 6.40E+00 NA 7.43E+00 NA 1.55E+01 NA 1.40E+01 9.10E+00 MW-45-61 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-67-39 9.77E+00 NA 8.52E+00 NA 5.43E+00 NA 1.57E+01 NA 1.81E+01 9.86E+00 MW-46 8.57E-01 NA ND NA ND NA ND NA 2.00E+00 8.57E-01 MW-67-105 1.77E+00 NA 2.61E+00 NA ND NA ND NA 4.38E+00 2.19E+00 MW-49-26 1.55E+01 NA 1.28E+01 NA ND NA 1.30E+01 NA 2.79E+01 1.38E+01 MW-67-173 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-49-42 1.75E+01 NA 1.85E+01 NA 1.99E+01 NA 2.30E+01 NA 3.72E+01 1.97E+01 MW-67-219 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-49-65 1.04E+01 NA 1.24E+01 NA 1.41E+01 NA 1.15E+01 NA 2.62E+01 1.21E+01 MW-67-276 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-50-42 4.36E+00 NA 8.43E+00 NA 3.73E+00 NA 5.42E+00 NA 1.10E+01 5.49E+00 MW-67-323 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-50-66 2.99E+01 NA 2.65E+01 NA 2.33E+01 NA 2.61E+01 NA 5.24E+01 2.65E+01 MW-67-340 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-51-40 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-107 ND NA ND NA NA NA NA NA 2.00E+00 ND MW-51-79 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-111 1.48E+00 NA ND 1.80E+00 ND NA NA NA 2.90E+00 1.64E+00 MW-51-104 ND NA ND NA ND NA ND NA 2.00E+00 ND U3-4D ND NA ND NA ND NA ND NA 2.00E+00 ND MW-51-135 ND NA ND NA ND NA ND NA 2.00E+00 ND U3-4S NA NA ND NA ND NA NA NA 2.00E+00 ND MW-51-163 ND NA ND NA ND NA ND NA 2.00E+00 ND U3-T1 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-51-189 ND NA ND NA ND NA ND NA 2.00E+00 ND U3-T2 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-52-11 ND NA ND NA NA NA NA NA 2.00E+00 ND U1-CSS 8.95E+00 NA ND NA 1.18E+01 NA NA NA 2.08E+01 1.04E+01 MW-52-18 ND NA ND NA NA NA NA NA 2.00E+00 ND U1-NCD NA NA 5.06E+01 NA 3.88E+01 NA NA NA 4.47E+01 MW-52-48 ND NA ND NA NA NA NA NA 2.00E+00 ND U1-SFDS ND NA 1.88E+01 NA 1.17E+01 NA NA NA 1.53E+01 MW-52-64 ND NA ND NA NA NA NA NA 2.00E+00 ND I-2 NA NA ND NA ND NA NA NA 2.00E+00 ND MW-52-122 ND NA NA NA NA NA NA NA 2.00E+00 ND LAF-002 NA ND ND NA ND NA NA NA positive ND MW-52-162 ND NA ND NA NA NA NA NA 2.00E+00 ND B-1 ND NA ND NA ND NA ND NA ND MW-52-181 ND NA NA NA NA NA NA NA 2.00E+00 ND B-6 NA ND ND NA ND NA ND NA ND MH-5 VCFD NA ND ND ND/ND ND NA ND NA ND Notes:

Well ID 2011 Investigation Level Rolling Annual Average 2011 Investigation Level Strontium Results (pCi/L)

Strontium Results (pCi/L)

Rolling Annual Average

3)

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

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.

Well ID shaded value ENT00575D 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:

ENT00575D-00-BD01 10/15/2012 10/15/2012

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storage Gravel Gravel Storage No Access Grass Earth Parking Asphalt Asphalt curb Asphalt parking Asphalt Concrete curbs Concrete curb Concrete Concrete curb Wooden curb ass A/C UNIT Handicap ramp A/C unit on concrete Stone curbs Asphalt drive Asphalt parking Asphalt parking alt 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 te curb Asphalt parking Concrete curb curb pad Asphalt curb arking Asphalt curb Asphalt curb Grass 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 ROOF DRAIN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 33' 33' 42.5' 42.5' MH-4 MH-4A MH-5 MH-6 MH-2 B6 B6A B5 B4 B4A B3 B3A B2A B2 B1 A2 A1 U3-MH-14 F5 A2A CB-B CB-E CB-F C-1 C-3 D2 B7 B8 CB-33 CB-34 CB-15 CB-14 CB-13 CB-32 CB-31 CB-30 A7 U1-CB-22 U3-CB (U1-CB-10)

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

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

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

AB E13 E12 D1 CB-17 F2 F1 CB-12 MH-23 MH-19 MH-20 ROOF DRAIN Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL CSS UNIT 1 UNIT 3 ALL EY WAY UTILITY TUNNEL UTILITY TUNNEL 4

4 4

5 CSS TRENCH 50 40 30 20 10 5

50 40 30 20 10 5

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

MH-5 VCFD 3

3 3

3 4

4 4

6 7

1 1

8 9

I-2 HR-1 U3-3 U3-2 U3-1 RW-1 OUT-1 U3-C1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 U3-4S U3-4D MW-52 MW-51 MW-50 MW-49 MW-47 MW-46 MW-45 MW-44 MW-42 MW-41 MW-38 MW-32 MW-31 MW-40 MW-48 MW-43 MW-39 U3-T2 U3-T1 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.8 2.4 1.8 44.7 9.98 1.17 2.25 4.95 1.95 4.98 4.16 4.58 4.07 3.21 1.51 34.9 6.78 9.53 18.4 12.8 1.81 1.26 2.61 15.16 17.64 10.95 19.23 15.73 10.11 25.55 18.25 17.35 19.28 13.55 10.54 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 ND ND ND ND 1.88 4.05 0.84 1.81 4.75 2.66 10.6 15.25 31.08 21.51 Plant North N

N 50 0

50 100 150 25 Feet INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 Figure No.:

Job No.:

Dwg. Date:

01.0017869.92 7-Q2 Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS 2nd QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1

2nd QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1

LEGEND 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).

Groundwater Elevation Contours Screened in Soil Screened in Bedrock 11.3 11.9 12.6 12.8 Multiple Screened Intervals w/ Depth Depth-Specific Data 1.6 20.2 6.0 1.3 Average activity of Sr90 (pCi/L) for each screened interval.

Probable Legacy Release SSCs Activity Data1,2 Bar Graphs; Average Sr-90, pCi/L Not Detected (ND)

ND - 1 1.0 - 2.0 2.0 - 4.0 4.0 - 8.0 8.0 - 25

> 25 ND 0.74 1.7 2.86 5.5 16.1 40.4 No Sample Isopleths; Average Sr-90, pCi/L 2 - 4 4 - 8 8 - 25

> 25 MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation

?

Standby Radionuclide Monitoring Installation

?

Contours Other Than 10' Interval 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

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

Vadose Zone Contaminant Transport Data Notes:

1. Average Sr-90 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. Two discrete isopleths have been drawn around MW-39 and MW-41 given average concentrations greater than 2 pCi/L. It is expected that similar concentrations exist at other locations along the legacy piping alignment in addition to the locations shown.

5. Sr-90 activity at MW-111 may be due to desorption of residual Sr-90 from backfill used in the Transformer Yard.

6. 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.

7. 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.

8. 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 11/21/2009 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.

9. 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 F07 Q2 2011 Rolling Average Strontium-90 Activity Map 17869-92_final.mxd, 9/13/2012, 4:43:12 PM, jennifer.pisani 09-13-2012 Unit 2 Fuel Pool (All identified leaks repaired as of December 2007) 6 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

^

8 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 Sample Sink Overflow - Unit 1 Chemical Systems Building Q2 2011 9

G 7

Localized Transient Releases (Surface Spills and Washout)

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

XXX X

Well ID 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 ND ND/ND ND NA ND ND 2.40E+00 ND 2.00E+00 2.40E+00 MW-54-37 4.00E+00 NA 4.51E+00 NA 4.88E+00 NA 4.91E+00 4.34E+00 9.20E+00 4.58E+00 MW-30-84 ND ND/ND ND NA ND ND ND ND 2.00E+00 ND MW-54-58 1.36E+00 NA 2.67E+00 NA 1.68E+00 NA ND 1.49E+00 3.43E+00 1.80E+00 MW-31-49 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-54-123 2.98E+00 NA 7.65E+00 NA 2.56E+00 NA 3.44E+00 ND 8.14E+00 4.16E+00 MW-31-63 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-54-144 1.17E+01 NA 1.08E+01 NA 9.31E+00 NA 1.20E+01 1.13E+01 2.53E+01 1.10E+01 MW-31-85 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-54-173 5.97E+00 NA 4.65E+00 NA 5.81E+00 NA 3.91E+00 4.54E+00 1.22E+01 4.98E+00 MW-32-48 ND ND NA NA NA NA NA NA 2.00E+00 ND MW-54-190 1.57E+01 NA 1.92E+01 NA 1.68E+01 NA 1.90E+01 1.75E+01 4.03E+01 1.76E+01 MW-32-59 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-55-24 8.64E+00 NA 1.08E+01 NA 1.09E+01 NA NA NA 2.97E+01 1.01E+01 MW-32-85 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-55-35 1.66E+01 NA 1.13E+01 NA 1.93E+01 NA NA NA 4.26E+01 1.57E+01 MW-32-149 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-55-54 1.93E+01 NA 1.93E+01 NA 1.91E+01 NA NA NA 3.93E+01 1.92E+01 MW-32-173 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-56-53 ND NA ND NA NA NA ND ND 2.00E+00 ND MW-32-190 ND ND/ND ND NA ND ND ND NA 2.00E+00 ND MW-56-83 ND NA ND NA NA NA 3.87E+00 1.45E+00 3.98E+00 2.66E+00 MW-33 ND ND NA NA NA NA NA NA 2.00E+00 ND MW-57-11 ND NA NA NA NA NA 3.11E+01 3.87E+01 4.92E+01 3.49E+01 MW-35 NA NA NA NA NA NA NA NA 2.00E+00 NA MW-57-20 ND NA NA NA NA NA 1.74E+00 1.27E+00 2.24E+00 1.51E+00 MW-36-24 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-57-45 ND NA NA NA NA NA ND ND 2.60E+00 ND MW-36-41 1.88E+00 NA 3.54E+00 NA 4.11E+00 NA 3.31E+00 NA 7.99E+00 3.21E+00 MW-58-26 ND NA ND NA NA NA ND ND 2.00E+00 ND MW-36-52 ND NA 4.73E+00 NA ND NA 3.41E+00 NA 8.14E+00 4.07E+00 MW-58-65 ND NA ND NA NA NA ND ND 2.00E+00 ND MW-37-22 5.19E+00 NA 1.38E+01 NA 1.04E+01 NA 8.72E+00 NA 2.20E+01 9.53E+00 MW-59-32 NA NA NA NA NA NA NA ND ND MW-37-32 1.41E+01 NA ND NA 1.49E+01 NA 2.62E+01 NA 3.54E+01 1.84E+01 MW-59-45 NA NA NA NA NA NA NA ND ND MW-37-40 1.43E+01 NA 1.28E+01 NA 1.93E+01 NA 2.30E+01 NA 2.84E+01 1.74E+01 MW-59-68 NA NA NA NA NA NA NA ND ND MW-37-57 1.73E+01 NA 1.97E+01 NA 2.02E+01 NA 1.58E+01 NA 3.68E+01 1.83E+01 MW-60-35 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-67 1.73E+00 NA 1.96E+00 NA NA NA 1.74E+00 ND 3.30E+00 1.81E+00 MW-60-53 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-84 8.43E-01 NA ND NA NA NA ND ND 2.10E+00 8.43E-01 MW-60-72 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-102 4.05E+00 NA ND NA NA NA ND ND 8.10E+00 4.05E+00 MW-60-135 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-124 2.25E+00 NA ND NA NA NA ND ND 4.50E+00 2.25E+00 MW-60-154 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-183 ND NA ND NA NA NA ND ND 2.00E+00 ND MW-60-176 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-195 ND NA ND NA NA NA 1.88E+00 ND 2.00E+00 1.88E+00 MW-62-18 ND NA ND NA ND NA ND 1.26E+00 2.00E+00 1.26E+00 MW-40-27 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-37 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-40-46 ND NA ND NA ND NA ND****

NA 2.00E+00 ND MW-62-53 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-40-81 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-71 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-40-100 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-92 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-40-127 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-138 1.47E+00 NA ND NA 2.15E+00 NA ND ND 2.42E+00 1.81E+00 MW-40-162 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-62-182 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-41-40 4.37E+00 NA 4.08E+00 NA 1.15E+01 NA 2.32E+00 2.48E+00 7.28E+00 4.95E+00 MW-63-18 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-41-63 4.79E+00 NA 4.25E+00 NA 6.92E+00 NA ND 3.03E+00 7.36E+00 4.75E+00 MW-63-34 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-42-49 1.39E+01 NA 1.81E+01 NA 2.32E+01 NA 5.45E+00 NA 9.00E+01 1.52E+01 MW-63-50 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-42-78 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-93 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-43-28 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-112 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-43-62 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-121 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-44-66 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-63-163 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-44-102 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-63-174 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-45-42 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-65-48 NA NA NA NA NA NA NA ND ND MW-45-61 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-65-80 NA NA NA NA NA NA NA ND ND MW-46 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-66-21 1.17E+00 NA ND NA ND NA ND NA 2.07E+00 1.17E+00 MW-47-56 NA NA NA NA NA NA NA ND ND MW-66-36 6.40E+00 NA 7.43E+00 NA 1.55E+01 NA 1.06E+01 NA 1.40E+01 9.98E+00 MW-47-80 NA NA NA NA NA NA NA 1.95E+00 1.95E+00 MW-67-39 8.52E+00 NA 5.43E+00 NA 1.57E+01 NA 1.25E+01 NA 1.81E+01 1.05E+01 MW-49-26 1.28E+01 NA ND NA 1.30E+01 NA 1.26E+01 NA 2.79E+01 1.28E+01 MW-67-105 2.61E+00 NA ND NA ND NA ND NA 4.38E+00 2.61E+00 MW-49-42 1.85E+01 NA 1.99E+01 NA 2.30E+01 NA 1.57E+01 NA 3.72E+01 1.93E+01 MW-67-173 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-49-65 1.24E+01 NA 1.41E+01 NA 1.15E+01 NA 1.62E+01 NA 2.62E+01 1.36E+01 MW-67-219 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-50-42 8.43E+00 NA 3.73E+00 NA 5.42E+00 NA 9.53E+00 3.01E+00 1.10E+01 6.78E+00 MW-67-276 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-50-66 2.65E+01 NA 2.33E+01 NA 2.61E+01 NA 2.63E+01 2.61E+01 5.24E+01 2.56E+01 MW-67-323 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-51-40 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-67-340 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-51-79 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-107 ND NA NA NA NA NA ND NA 2.00E+00 ND MW-51-104 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-108 NA NA NA NA NA NA NA ND ND MW-51-135 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-109 NA NA NA NA NA NA NA ND ND MW-51-163 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-111 ND 1.80E+00 ND NA NA NA NA NA 2.90E+00 1.80E+00 MW-51-189 ND NA ND NA ND NA ND NA 2.00E+00 ND U3-3 NA NA NA NA NA NA NA ND ND MW-52-11 ND NA NA NA NA NA ND ND 2.00E+00 ND U3-4D ND NA ND NA ND NA ND ND 2.00E+00 ND MW-52-18 ND NA NA NA NA NA ND ND 2.00E+00 ND U3-4S ND NA ND NA NA NA ND ND 2.00E+00 ND MW-52-48 ND NA NA NA NA NA ND ND 2.00E+00 ND U3-T1 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-52-64 ND NA NA NA NA NA ND ND 2.00E+00 ND U3-T2 ND NA ND NA ND NA ND ND 2.00E+00 ND MW-52-122 NA NA NA NA NA NA ND ND 2.00E+00 ND U1-CSS ND NA 1.18E+01 NA NA NA 1.61E+01 3.90E+00 2.08E+01 1.06E+01 MW-52-162 ND NA NA NA NA NA ND ND 2.00E+00 ND U1-NCD 5.06E+01 NA 3.88E+01 NA NA NA NA NA 4.47E+01 MW-52-181 NA NA NA NA NA NA ND ND 2.00E+00 ND U1-SFDS 1.88E+01 NA 1.17E+01 NA NA NA NA NA 1.53E+01 MW-53-82 ND NA ND NA ND NA ND NA 4.46E+00 ND I-2 ND NA ND NA NA NA NA NA 2.00E+00 ND MW-53-120 2.97E+01 NA 2.96E+01 NA 2.95E+01 NA 3.55E+01 NA 6.60E+01 3.11E+01 LAF-002 ND NA ND NA NA NA ND NA positive ND B-1 ND NA ND NA ND NA ND NA ND B-6 ND NA ND NA ND NA ND ND ND MH-5 VCFD ND ND/ND ND NA ND NA ND ND***

ND

6) **** The Q2 2011 MW-40-46 preliminary Sr-90 result was 2.83 pCi/L and exceeded the IL. However, after re-analysis, the sample was below the detection limit which suggests the preliminary result was likely a false positive. A shift in the MDC for the preliminary result could have possibly resulted from contaminated laboratory equipment, modified count time, or changes in sample preparation.

Notes:

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

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

3)

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

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

5) *** Four Post-Q2 2011 MH-5 VCFD samples were collected. All four samples were ND for Sr-90.

Well ID Investigation Level Rolling Annual Average Investigation Level Strontium Results (pCi/L)

Strontium Results (pCi/L)

Rolling Annual Average shaded value

G G

G XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XY XYXY XY XYXY XYXY XYXY XYXY XY XY XYXY XY XY XYXY XYXY XYXY XYXY XY XYXY XY XYXY XYXY XY XY XYXY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XY XY XYXY XY XY XY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY X

G

^

?

? @

?

? @

?

storage Gravel Gravel Storage No Access Grass Earth Parking Asphalt Asphalt curb Asphalt parking Asphalt Concrete curbs Concrete curb Concrete Concrete curb Wooden curb ass A/C UNIT Handicap ramp A/C unit on concrete Stone curbs Asphalt drive Asphalt parking Asphalt parking alt 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 te curb Asphalt parking Concrete curb curb pad Asphalt curb arking Asphalt curb Asphalt curb Grass 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 ROOF DRAIN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 33' 33' 42.5' 42.5' MH-4 MH-4A MH-5 MH-6 MH-2 B6 B6A B5 B4 B4A B3 B3A B2A B2 B1 A2 A1 U3-MH-14 F5 A2A CB-B CB-E CB-F C-1 C-3 D2 B7 B8 CB-33 CB-34 CB-15 CB-14 CB-13 CB-32 CB-31 CB-30 A7 U1-CB-22 U3-CB (U1-CB-10)

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

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

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

AB E13 E12 D1 CB-17 F2 F1 CB-12 MH-23 MH-19 MH-20 ROOF DRAIN Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL CSS UNIT 1 UNIT 3 ALL EY WAY UTILITY TUNNEL UTILITY TUNNEL 4

4 4

5 CSS TRENCH 50 40 30 20 10 5

50 40 30 20 10 5

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

MH-5 VCFD 3

3 3

3 4

4 4

6 7

1 1

8 9

I-2 HR-1 U3-3 U3-2 U3-1 RW-1 OUT-1 U3-C1 U2-C1 MW-67 MW-66 MW-37 MW-36 MW-35 MW-34 MW-33 U3-4S U3-4D MW-52 MW-51 MW-50 MW-49 MW-47 MW-46 MW-45 MW-44 MW-42 MW-41 MW-38 MW-32 MW-31 MW-40 MW-48 MW-43 MW-39 U3-T2 U3-T1 MW-65 MW-62 MW-60 MW-59 MW-58 MW-57 MW-56 MW-55 MW-54 MW-53 MW-30 MW-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5.1 2.4 64.8 1.95 1.95 4.66 3.69 3.18 1.64 30.2 25.5 6.23 19.3 19.3 13.3 2.15 1.26 9.74 12.34 10.39 18.28 4.646 20.13 15.63 11.53 10.13 18.65 12.73 18.68 10.882 4.3475 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 ND ND ND ND ND ND 9.75 1.88 1.85 4.73 2.81 10.6 31.9 21.51 Plant North N

N 50 0

50 100 150 25 Feet INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 Figure No.:

Job No.:

Dwg. Date:

01.0017869.92 7-Q3 Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS 3rd QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1

3rd QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1

LEGEND 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).

Groundwater Elevation Contours Screened in Soil Screened in Bedrock 11.3 11.9 12.6 12.8 Multiple Screened Intervals w/ Depth Depth-Specific Data 1.6 20.2 6.0 1.3 Average activity of Sr90 (pCi/L) for each screened interval.

Probable Legacy Release SSCs Activity Data1,2 Bar Graphs; Average Sr-90, pCi/L Not Detected (ND)

ND - 1 1.0 - 2.0 2.0 - 4.0 4.0 - 8.0 8.0 - 25

> 25 ND 0.74 1.7 2.86 5.5 16.1 40.4 No Sample Isopleths; Average Sr-90, pCi/L 2 - 4 4 - 8 8 - 25

> 25 MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation

?

Standby Radionuclide Monitoring Installation

?

Contours Other Than 10' Interval 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

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

Vadose Zone Contaminant Transport Data Notes:

1. Average Sr-90 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. Two discrete isopleths have been drawn around MW-39 and MW-41 given average concentrations greater than 2 pCi/L. It is expected that similar concentrations exist at other locations along the legacy piping alignment in addition to the locations shown.

5. Sr-90 activity at MW-111 may be due to desorption of residual Sr-90 from backfill used in the Transformer Yard.

6. 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.

7. 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.

8. 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 11/21/2009 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.

9. 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 F07 Q3 2011 Rolling Average Strontium-90 Activity Map 17869-92_final.mxd, 9/13/2012, 4:54:40 PM, jennifer.pisani 09-13-2012 Unit 2 Fuel Pool (All identified leaks repaired as of December 2007) 6 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

^

8 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 Sample Sink Overflow - Unit 1 Chemical Systems Building Q2 2011 9

G 7

Localized Transient Releases (Surface Spills and Washout)

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

XXX X

Well ID 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 ND NA ND ND 2.40E+00 ND ND NA 2.00E+00 2.40E+00 MW-54-37 4.51E+00 NA 4.88E+00 NA 4.91E+00 4.34E+00 ND NA 9.20E+00 4.66E+00 MW-30-84 ND NA ND ND ND ND ND NA 2.00E+00 ND MW-54-58 2.67E+00 NA 1.68E+00 NA ND 1.49E+00 ND NA 3.43E+00 1.95E+00 MW-31-49 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-54-123 7.65E+00 NA 2.56E+00 NA 3.44E+00 ND 3.74E+00 NA 8.14E+00 4.35E+00 MW-31-63 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-54-144 1.08E+01 NA 9.31E+00 NA 1.20E+01 1.13E+01 1.10E+01 NA 2.53E+01 1.09E+01 MW-31-85 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-54-173 4.65E+00 NA 5.81E+00 NA 3.91E+00 4.54E+00 4.32E+00 NA 1.22E+01 4.65E+00 MW-32-48 NA NA NA NA NA NA NA NA 2.00E+00 NA MW-54-190 1.92E+01 NA 1.68E+01 NA 1.90E+01 1.75E+01 1.89E+01 NA 4.03E+01 1.83E+01 MW-32-59 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-55-24 1.08E+01 NA 1.09E+01 NA NA NA 1.29E+01 NA 2.97E+01 1.15E+01 MW-32-85 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-55-35 1.13E+01 NA 1.93E+01 NA NA NA 1.63E+01 NA 4.26E+01 1.56E+01 MW-32-149 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-55-54 1.93E+01 NA 1.91E+01 NA NA NA 2.20E+01 NA 3.93E+01 2.01E+01 MW-32-173 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-56-53 ND NA NA NA ND ND NA ND 2.00E+00 ND MW-32-190 ND NA ND ND ND NA ND NA 2.00E+00 ND MW-56-83 ND NA NA NA 3.87E+00 1.45E+00 NA 3.12E+00 3.98E+00 2.81E+00 MW-33 NA NA NA NA NA NA NA NA 2.00E+00 NA MW-57-11 NA NA NA NA 3.11E+01 3.87E+01 NA 2.08E+01 4.92E+01 3.02E+01 MW-35 NA NA NA NA NA NA NA NA 2.00E+00 NA MW-57-20 NA NA NA NA 1.74E+00 1.27E+00 NA 1.90E+00 2.24E+00 1.64E+00 MW-36-24 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-57-45 NA NA NA NA ND ND NA ND 2.60E+00 ND MW-36-41 3.54E+00 NA 4.11E+00 NA 3.31E+00 NA 1.74E+00 NA 7.99E+00 3.18E+00 MW-58-26 ND NA NA NA ND ND NA ND 2.00E+00 ND MW-36-52 4.73E+00 NA ND NA 3.41E+00 NA 2.93E+00 NA 8.14E+00 3.69E+00 MW-58-65 ND NA NA NA ND ND NA ND****

2.00E+00 ND MW-37-22 1.38E+01 NA 1.04E+01 NA 8.72E+00 NA 7.59E+00 NA 2.20E+01 1.01E+01 MW-59-32 NA NA NA NA NA ND NA ND ND MW-37-32 ND NA 1.49E+01 NA 2.62E+01 NA 1.68E+01 NA 3.54E+01 1.93E+01 MW-59-45 NA NA NA NA NA ND NA ND ND MW-37-40 1.28E+01 NA 1.93E+01 NA 2.30E+01 NA 1.95E+01 NA 2.84E+01 1.87E+01 MW-59-68 NA NA NA NA NA ND NA ND ND MW-37-57 1.97E+01 NA 2.02E+01 NA 1.58E+01 NA 2.15E+01 NA 3.68E+01 1.93E+01 MW-60-35 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-67 1.96E+00 NA NA NA 1.74E+00 ND NA ND 3.30E+00 1.85E+00 MW-60-53 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-84 ND NA NA NA ND ND NA ND 2.10E+00 ND MW-60-72 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-102 ND NA NA NA ND ND NA ND 8.10E+00 ND MW-60-135 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-124 ND NA NA NA ND ND NA ND 4.50E+00 ND MW-60-154 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-183 ND NA NA NA ND ND NA ND 2.00E+00 ND MW-60-176 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-39-195 ND NA NA NA 1.88E+00 ND NA ND 2.00E+00 1.88E+00 MW-62-18 ND NA ND NA ND 1.26E+00 ND NA 2.00E+00 1.26E+00 MW-40-27 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-62-37 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-40-46 ND NA ND NA ND****

NA NA NA 2.00E+00 ND MW-62-53 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-40-81 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-62-71 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-40-100 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-62-92 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-40-127 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-62-138 ND NA 2.15E+00 NA ND ND ND NA 2.42E+00 2.15E+00 MW-40-162 ND NA ND NA ND NA NA NA 2.00E+00 ND MW-62-182 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-41-40 4.08E+00 NA 1.15E+01 NA 2.32E+00 2.48E+00 ND NA 7.28E+00 5.10E+00 MW-63-18 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-41-63 4.25E+00 NA 6.92E+00 NA ND 3.03E+00 ND NA 7.36E+00 4.73E+00 MW-63-34 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-42-49 1.81E+01 NA 2.32E+01 NA 5.45E+00 NA 2.60E+00 NA 9.00E+01 1.23E+01 MW-63-50 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-42-78 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-93 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-43-28 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-112 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-43-62 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-63-121 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-44-66 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-63-163 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-44-102 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-63-174 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-45-42 ND NA ND NA ND ND NA ND 2.00E+00 ND MW-65-48 NA NA NA NA NA ND NA NA ND MW-45-61 ND NA ND NA ND ND NA ND 2.00E+00 ND MW-65-80 NA NA NA NA NA ND NA NA ND MW-46 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-66-21 ND NA ND NA ND NA ND NA 2.07E+00 ND MW-47-56 NA NA NA NA NA ND NA ND ND MW-66-36 7.43E+00 NA 1.55E+01 NA 1.06E+01 NA 8.00E+00 NA 1.40E+01 1.04E+01 MW-47-80 NA NA NA NA NA 1.95E+00 NA ND 1.95E+00 MW-67-39 5.43E+00 NA 1.57E+01 NA 1.25E+01 NA 5.31E+00 NA 1.81E+01 9.74E+00 MW-49-26 ND NA 1.30E+01 NA 1.26E+01 NA 1.26E+01 NA 2.79E+01 1.27E+01 MW-67-105 ND NA ND NA ND NA ND NA 4.38E+00 ND MW-49-42 1.99E+01 NA 2.30E+01 NA 1.57E+01 NA 1.61E+01 NA 3.72E+01 1.87E+01 MW-67-173 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-49-65 1.41E+01 NA 1.15E+01 NA 1.62E+01 NA 1.14E+01 NA 2.62E+01 1.33E+01 MW-67-219 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-50-42 3.73E+00 NA 5.42E+00 NA 9.53E+00 3.01E+00 9.47E+00 NA 1.10E+01 6.23E+00 MW-67-276 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-50-66 2.33E+01 NA 2.61E+01 NA 2.63E+01 2.61E+01 2.57E+01 NA 5.24E+01 2.55E+01 MW-67-323 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-51-40 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-67-340 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-51-79 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-107 NA NA NA NA ND NA NA NA 2.00E+00 ND MW-51-104 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-108 NA NA NA NA NA ND NA ND ND MW-51-135 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-109 NA NA NA NA NA ND NA ND ND MW-51-163 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-111 ND NA NA NA NA NA NA NA 2.90E+00 ND MW-51-189 ND NA ND NA ND NA ND NA 2.00E+00 ND U3-3 NA NA NA NA NA ND NA ND ND MW-52-11 NA NA NA NA ND ND NA NA 2.00E+00 ND U3-4D ND NA ND NA ND ND ND NA 2.00E+00 ND MW-52-18 NA NA NA NA ND ND NA NA 2.00E+00 ND U3-4S ND NA NA NA ND ND ND NA 2.00E+00 ND MW-52-48 NA NA NA NA ND ND NA NA 2.00E+00 ND U3-T1 ND NA ND NA ND NA ND NA 2.00E+00 ND MW-52-64 NA NA NA NA ND ND NA NA 2.00E+00 ND U3-T2 ND NA ND NA ND ND ND NA 2.00E+00 ND MW-52-122 NA NA NA NA ND ND NA NA 2.00E+00 ND U1-CSS 1.18E+01 NA NA NA 1.61E+01 3.90E+00 NA NA 2.08E+01 1.06E+01 MW-52-162 NA NA NA NA ND ND NA NA 2.00E+00 ND U1-NCD 3.88E+01 NA NA NA NA NA 9.08E+01 NA 6.48E+01 MW-52-181 NA NA NA NA ND ND NA NA 2.00E+00 ND U1-SFDS 1.17E+01 NA NA NA NA NA 7.79E+00 NA 9.75E+00 MW-53-82 ND NA ND NA ND NA ND NA 4.46E+00 ND I-2 ND NA NA NA NA NA ND NA 2.00E+00 ND MW-53-120 2.96E+01 NA 2.95E+01 NA 3.55E+01 NA 3.30E+01 NA 6.60E+01 3.19E+01 LAF-002 ND NA NA NA ND NA NA NA positive ND B-1 ND NA ND NA ND NA ND NA ND B-6 ND NA ND NA ND ND ND NA ND MH-5 VCFD ND NA ND NA ND ND***

ND_ND_ND ND_ND ND

6) **** The Q2 2011 MW-40-46 preliminary Sr-90 result was 2.83 pCi/L and the Post-Q3 2011 MW-58-65 preliminary result was 3.64 pCi/L; both results exceeded the IL. However, after re-analysis, thes samples were below the detection limit which suggests the preliminary results were likely false positives. A shift in the MDC for the preliminary results could have possibly resulted from contaminated laboratory equipment, modified count time, or changes in sample preparation.

Notes:

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

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

3)

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

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

5) *** Four Post-Q2 2011 MH-5 VCFD samples were collected. All four samples were ND for Sr-90.

Well ID Investigation Level Rolling Annual Average Investigation Level Strontium Results (pCi/L)

Strontium Results (pCi/L)

Rolling Annual Average shaded value

G G

G XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XY XYXY XY XYXY XYXY XYXY XYXY XY XY XYXY XY XY XYXY XYXY XYXY XYXY XY XYXY XY XYXY XYXY XY XY XYXY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XY XY XYXY XY XY XY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY XYXY XYXY XY XYXY XYXY XYXY XY X

G

^

?

? @

?

? @

?

storage Gravel Gravel Storage No Access Grass Earth Parking Asphalt Asphalt curb Asphalt parking Asphalt Concrete curbs Concrete curb Concrete Concrete curb Wooden curb ass A/C UNIT Handicap ramp A/C unit on concrete Stone curbs Asphalt drive Asphalt parking Asphalt parking alt 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 te curb Asphalt parking Concrete curb curb pad Asphalt curb arking Asphalt curb Asphalt curb Grass 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 ROOF DRAIN ELEVATION 65' 43.8' 43.8' 43.8' 21.75' 22.75' (EL.=0.0) 33' 13' 43.8' 33' 33' 33' 33' 33' 42.5' 42.5' MH-4 MH-4A MH-5 MH-6 MH-2 B6 B6A B5 B4 B4A B3 B3A B2A B2 B1 A2 A1 U3-MH-14 F5 A2A CB-B CB-E CB-F C-1 C-3 D2 B7 B8 CB-33 CB-34 CB-15 CB-14 CB-13 CB-32 CB-31 CB-30 A7 U1-CB-22 U3-CB (U1-CB-10)

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

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

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

AB E13 E12 D1 CB-17 F2 F1 CB-12 MH-23 MH-19 MH-20 ROOF DRAIN Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard PAB East Fuel Pool Water Storage Tank FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL CSS UNIT 1 UNIT 3 ALL EY WAY UTILITY TUNNEL UTILITY TUNNEL 4

4 4

5 CSS TRENCH 50 40 30 20 10 5

50 40 30 20 10 5

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

MH-5 VCFD 3

3 3

3 4

4 4

6 7

1 1

8 9

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-30 MW-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2.4 40.5 5.43 2.04 4.66 3.25 1.59 4.65 3.86 3.05 19.7 15.7 1.64 30.2 8.68 19.2 2.15 1.26 10.42 11.08 18.06 10.53 19.53 26.16 11.53 19.08 17.63 12.73 18.98 14.83 11.63 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 ND 10 ND ND ND 5.33 1.88 2.77 3.12 2.06 4.98 2.81 34.63 21.51 Plant North N

N 50 0

50 100 150 25 Feet INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 Figure No.:

Job No.:

Dwg. Date:

01.0017869.92 7-Q4 Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS 4th QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1

4th QUARTER 2011 ROLLING AVERAGE STRONTIUM-90 ACTIVITY MAP 1