Text

Figures from Indian Point Quarter 3 2014 Groundwater Monitoring Report - Part 1
	ML15091A085
Person / Time
Site:	Indian Point
Issue date:	04/01/2015
From:	Michael Wentzel; Division of License Renewal
To:	; Division of License Renewal
References
	Download: ML15091A085 (7)
	v • d • e

April 1, 2015 Memo To:

File From:

Michael Wentzel

Subject:

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

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

Figure No.:

Job No.:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: EMD/JAP 03-16-2015 1

INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK SITE LOCATION PLAN 0

2,000 4,000 6,000 1,000 Feet

© 2015 - GZA GeoEnvironmental, Inc. J:\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\Q3_2014\\15-03-16 Q3-2014 FINAL Figure 1 - Site Location Plan.mxd, 3/16/2015, 4:01:24 PM, elaine.donohue 01.0017869.93 GZA GeoEnvironmental, Inc.

249 Vanderbilt Avenue Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701

Trans.

Transformer area and switch gear Tank Transformer yard Tank 30 30 70 80 90 80 70 90 80 Tank Tank Tank Condensate Tank Transformers on raised Concrete Pad Trans.

Transformers Concrete slab Tank Transformers on raised Concrete Pad Tank Storage Tank Transformer Substation "H" Trailer Trans Tank Storage Tank Tank Pit Trans Trans Trans Storage Tanks Transformers Yard (Gravel)

DISCHARGE OUTFALL CANAL Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard Primary Auxilliary Building UNIT 2 UNIT 1 UNIT 3 Hudson River Discharge Canal Unit 1 Screenwell House Condensate Polisher Building Intake Structure Heater Bay Aux.

Boiler Building Administration Building Discharge Canal Transformer Yard Primary Auxilliary Building Superheater / Admin. Building Nuclear Service Building Fuel Storage Building Chem. Service Fuel Pool Fuel Storage Building Outfall MOB Curtain Drain Stack Sphere Foundation Drain Sump Tank Pit FPT Curtain Drain Annulus Fuel Pool Fuel Pool Containment Spray Sump FPT Chem. Sys.

Foundation Drain SCD NCD Utility Tunnel Utility Tunnel Pressure Water Storage Tank Reactor Water Storage Tank Passive Water Storage Tank Reactor Water Storage Tank LEGEND 50 0

50 100 150 25 Feet Plant North N

N Storm Drain Storm Drain - Connection Terminated Footing / Curtain Drain Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: DMW Designed By: MJB/DMW Reviewed By: DMW Operator: EMD/JAP 01.0017869.93 2

INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK SITE PLAN 03-16-2015

© 2015 - GZA GeoEnvironmental, Inc. J:\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\Q3_2014\\15-03-16 Q3-2014 FINAL Figure 2 - Site Plan.mxd, 3/16/2015, 4:09:27 PM, elaine.donohue GZA GeoEnvironmental, Inc.

249 Vanderbilt Avenue Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701

I-2 U3-3 U3-2 U3-1 RW-1 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-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-108 MW-107 MW-58 MW-109 MW-68 storage Gravel Gravel Storage No Access Grass Earth Parking Asphalt Asphalt curb Asphalt parking Asphalt Concrete curbs Sign Concrete curb Concrete Concrete sidewalk Concrete curb Wooden curb Concrete sidewalk Concrete sidewalk Grass Concrete sidewalk Concrete sidewalk A/C UNIT Handicap ramp Concrete sidewalk Concrete sidewalk A/C unit on concrete Concrete sidewalk Conc. sidewalk Concrete sidewalk Stone curbs Asphalt drive Asphalt parking Asphalt parking Asphalt parking Asphalt parking Asphalt curb Asphalt sidewalk Shrubs Trans.

Asphalt Concrete sidewalk Concrete sidewalk Transformer area and switch gear Storage Containers A/C Units Grass Concrete curb Grass Shrubs Concrete sidewalk Conc. sidewalk Wooden walk Open grate Asphalt drive Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt Asphalt drive Asphalt Asphalt Drive Sidewalk Gravel Gravel Transformer yard Asphalt Drive this Area No Access Asphalt Concrete Retaining Wall Stone retaining wall Gravel parking Concrete sidewalk Gravel parking Gravel parking Asphalt parking Concrete curb Asphalt parking Concrete curb Concrete sidewalk curb pad Asphalt curb Asphalt parking Asphalt curb Asphalt curb Grass Asphalt curb Gravel parking Storage Grass Asphalt drive Storage units Gravel Parking lot Asphalt Concrete sidewalk Overhead walkway Concrete curb Asphalt parking Concrete walk Asphalt parking Asphalt Asphalt Asphalt Wood walk Asphalt Concrete walk Concrete pier Courtyard Asphalt Rip-rap Sidewalk Concrete 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 90 100 100 110 140 140 Transformer Gravel Covered Concrete Asphalt parking Transformers on raised Concrete Pad Trans.

Transformers Concrete slab Grass Transformers on raised Concrete Pad Concrete Bridge Concrete Bridge Transformer Substation "H" Trailer Trans Asphalt Trans Trans Trans Concrete sidewalk Asphalt Grass Vent pit Mach.

stand Transformers Yard (Gravel)

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

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

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

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

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

AB E13 E12 D1 CB-17 F2 F1 CB-12 MH-23 MH-19 MH-20 ROOF DRAIN Turbine Generator Building 2 Turbine Generator Building 1 Turbine Generator Building 3 Transformer Yard PAB FUEL POOL UNIT 2 1,015' 640' WEST FUEL POOL UNIT 1 UNIT 3 U2-C1 HR-1 U3-C1 OUT-1 4

4 33'UTILITY TUNNEL 33' UTILITY TUNNEL CSS CSS TRENCH NORTHERN CLEAN ZONE UNIT 1/2 UNIT 2 NORTH UNIT 3 NORTH UNIT 3 SOUTH SOUTHERN CLEAN ZONE 50 40 30 20 10 5

E12 50 40 30 20 10 5

20 13 5

7 1

1 1

1 MH-5 VCFD U1-NCD U1-SFDS B-1 B-6 8

9 11 10 H U D S O N R I V E R 6

Plant North N

N 3rd QUARTER 2014 CURRENT AND POTENTIAL FUTURE SSC SOURCE LOCATIONS LAF-03 LAF-02 LAF-01 H U D S O N R I V E R EASTERN IP1-CB FLOW PATH SOUTH WESTERN IP1-CB FLOW PATH PRIMAR Y

IP1 FL OW P ATH LEGACY IP1 STORM DRAIN FLOW PATH IP1-CSS TRENCH FLOW PATH 50 0

50 100 150 25 Feet Figure No.:

Job No.:

Dwg. Date:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: EMD / EDC 01.0017869.93 4

INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK 3rd QUARTER 2014 CURRENT AND POTENTIAL FUTURE SSC SOURCE LOCATIONS 1,557.1' LAFARGE WELLS Data Notes:

1. 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).

2. The H3 bounding isopleth encompasses upper bound values measured over both depth and time through the current quarter. As such, the "plume" is an overstatement of contaminant levels actually existing on-site at any one time. Compare bounding plume to current plume on Figure 6.

3. The Sr-90 bounding isopleth encompasses upper bound values measured over both depth and time through the current quarter. As such, the "plume" is an overstatement of contaminant levels actually existing on-site at any one time. Compare bounding plume to current plume on Figure 7.

4. Two discrete isopleths have been drawn around MW-39 and 41 given measured Sr-90 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. 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. Subsequent data trends indicate this transient release dissipated through the groundwater flow system prior to Q2 2010.

6. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with a peak in activity observed in Unit 3 Manhole A2. This release was initially detected in a storm drain sample collected 03/25/2009 under the 80-10 Effluents Program. Additionally, transient Tritium peaks were also detected in MH-A2 between Q3 2010 and Q3 2011. Elevated Tritium levels observed in downgradient monitoring locations were consistent with the peaks noted above. Based on investigations initiated in 2009, as well as the subsequent 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 were due to condensation of SFP evaporation on the FSB roof (Washout) when the exhaust fan was inoperable due to equipment failure. This Tritium washout then entered the roof drain and discharged directly into MH-A2 during rainfall events. Entergy placed the FSB vent fan back in service immediately once repairs could be completed (7-21-2011), and the Tritium activity in MH-A2 returned to baseline conditions within 2 weeks thereafter.

7. Historically elevated levels of Tritium detected in MH-9 and MH-10a during routine 80-10 Effluents Program sampling on 1/15/2010 appear 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 transient release entered the well vault for MW-32, and may have penetrated the well casings and entered the subsurface around the monitoring installation.

8. 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.

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

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

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

LEGEND 0

200 400 100 Feet 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.

03-16-2015

© 2015 - GZA GeoEnvironmental, Inc. J:\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\Q3_2014\\15-03-16 F04 Q3 2014 Current and Potential Future SSC Source Locations 17869-93_FINAL.mxd, 3/16/2015, 6:12:36 PM, elaine.donohue GZA GeoEnvironmental, Inc.

249 Vanderbilt Avenue Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 General Notes:

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

"GZA.dwg".

2. Additional Long Term Monitoring Plan information is provided in the Hydrogeologic Site Investigation Report, GZA GeoEnvironmental, Inc. January 7, 2008.

Potential Future Source Locations Unit 2 and Unit 3 Potential H3 Sources MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation Standby Radionuclide Monitoring Installation 3

Bounding Activity SR901,

> 2 pCi/L Bounding Activity H3 2

1,

> 5,000 pCi/L Activity Data Isopleth Groundwater Elevation Contours 20 Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 1 1

Streamtubes Contours Other Than 10' Interval 5

Probable Legacy Release SSCs Terminated Connection To Storm Drain Drain Exfiltration Inter-Structure Joint / Mud Mat Containment Spray Sump Pipe Trench 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)

Localized Transient Releases Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 03/07/2009 5

6 (initial)

Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09 Transient Spill from Temporary R.O. Skid Piping -

Entered MW-32 Vault and MH 11/21/2009 7

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

Unit 2 MOB Drain Leak - Q2 2012 9

Unit 1 Containment Spray Annulus (CSA) Overflow 10 Unit 2 Fan Building 51 Floor Drain Overfill 11

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

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

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

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

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

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

DISASSEMBLY ISOLATION PIT PUMP SUCTION WELL WATER STORAGE POOL 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

4 1

1 1

1 3

6 7

MW-68 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-64 MW-61 MW-63 U1-CSS MW-105 MW-101 MW-110 MW-111 MW-112 MW-109 MW-108 MW-107 10 9

7.05 9.45 9.77 4.55 5.16 6.14 6.02 8.44 0.10 0.29 3.69 3.76 9.02 0.81 8.94 2.69 3.81 7.88 1.22 3.13 3.29 6.97 4.06 5.76 6.41 7.45 9.05 8.82 8.30 9.02 9.92 2.34 7.06 6.46 7.19 7.20 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

-1.30

-0.15

-0.48 29.36 33.90 37.68 36.03 40.36 49.24 40.66 43.87 44.32 46.83 52.35 54.22 32.72 22.70 23.79 24.43 24.79 25.12 25.21 26.96 30.71 31.76 32.15 25.45 26.68 34.00 21.90 21.08 22.37 25.16 29.05 10.48 10.60 10.54 10.68 12.36 11.71 10.27

-1.19

-1.54

-0.86

-2.26

-0.98

-1.24

-0.13

-0.08

-1.79

-1.69

-1.85

-0.37

-0.85

-1.24

-0.84

-0.15

-0.12

-1.93

-0.14

-0.86

-0.82

-0.02

-1.56

-1.02

-2.59

-2.25

-2.03 115.76 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.4 0.8 2.65 2.16 2.33 5.66 4.77 5.19 7.08 3.42 2.88 3.53 0.98 2.78 2.71 1.66 2.633 1.783 1.683 2.457 1.608 25.85 93.52 84.85 0.332 15.35 305.2 1.149 1.688 1.053 1.104 3.003 9.435 7.955 7.537 8.766 5.057 4.287 11.93 266.8 5.025 5.313 7.175 6.783 4.787 6.191 3.365 6.744 1.934 2.121 3.985 2.627 1.155 3.802 3.376 2.753 3.923 3.936 2.085 1.535 0.985 2.458 1.829 1.911 1.045 1.063 2.868 1.923 0.575 1.069 0.6515 0.7684 0.6465 0.7395 0.5278 0.6755 0.9833 0.7858 0.7538 0.8706 0.4215 0.8812 0.7584 0.4945 5

H U D S O N R I V E R DRY 21.51 ND 6.32 1.27 4.397 5.397 6.715 0.904 7.033 5.341 Plant North N

N 3rd QUARTER 2014 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: EDC 01.0017869.92 6

INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK 3rd QUARTER 2014 ROLLING AVERAGE TRITIUM ACTIVITY MAP 1

LEGEND MW-30 Boring / Monitoring Installation Designation Longterm Radionuclide Monitoring Installation Standby Radionuclide Monitoring Installation General Notes:

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

© 2015 - GZA GeoEnvironmental, Inc. J:\\17,000-18,999\\17869\\17869-91.MG\\Figures\\GIS\\MXD Documents\\Q3_2014\\15-03-16 F06 Q3 2014 Rolling Average Tritium Activity Map 17869-93_FINAL.mxd, 3/20/2015, 9:53:23 AM, elaine.donohue 03-20-2015 GZA GeoEnvironmental, Inc.

249 Vanderbilt Avenue Norwood, MA 02062 Phone: (781) 278-3700 Fax: (781) 278-5701 Data Notes:

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

2. 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. 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. Subsequent data trends indicate this transient release dissipated through the groundwater flow system prior to Q2 2010.

5. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with a peak in activity observed in Unit 3 Manhole A2. This release was initially detected in a storm drain sample collected 03/25/2009 under the 80-10 Effluents Program.

Additionally, transient Tritium peaks were also detected in MH-A2 between Q3 2010 and Q3 2011. Elevated Tritium levels observed in downgradient monitoring locations were consistent with the peaks noted above. Based on investigations initiated in 2009, as well as the subsequent 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 were due to condensation of SFP evaporation on the FSB roof (Washout) when the exhaust fan was inoperable due to equipment failure. This Tritium washout then entered the roof drain and discharged directly into MH-A2 during rainfall events. Entergy placed the FSB vent fan back in service immediately once repairs could be completed (7 2011), and the Tritium activity in MH-A2 returned to baseline conditions within 2 weeks thereafter.

6. Historcally elevated levels of Tritium detected in MH-9 and MH-10a during routine 80-10 Effluents Program sampling on 1/15/2010 appear 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 transient 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.

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

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

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

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.

Depth-Specific Data 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.

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

1 1

Probable Legacy Release SSCs 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 Unit 2 Fuel Pool (All identified leaks repaired as of December 2007)

Footing Drain Active Storm Drain Catch Basin Abandoned Storm Drain 1

Groundwater Elevation Contours Contours Other Than 10' Interval 5

Vadose Zone Contaminant Transport Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 20 1

Activity Data 1,2 Bar Graphs; Average H3, pCi/L Isopleths; Average H3, pCi/L 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).

H3 data x1,000 pCi/L No Depth-Specific Samples 5,000 - 10,000 10,000 - 50,000 50,000 - 100,000 Not Detected (ND)

ND ND - 1,000 0.56 1,000 - 5,000 2.8 5,000 - 10,000 6.25 10,000 - 50,000 32.2 50,000 - 100,000 65 100,000 - 200,000 155

> 200,000 260 100,000 - 250,000

> 250,000 Localized Transient Releases Transient Distillate Tank Valve Leak in Unit 1 Fuel Storage Building - 03/07/2009 4

(initial)

Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09 5

Transient Spill from Temporary R.O. Skid Piping -

Entered MW-32 Vault and MH 11/21/2009 6

Sample Sink Overflow - Unit 1 Chemical Systems Building - Q2 2011 7

Unit 2 MOB Drain Leak - Q2 2012 8

Unit 1 Containment Spray Annulus (CSA) Overflow 9

Unit 2 Fan Building 51 Floor Drain Overfill 10 Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 Supplementary Quarter 4 Quarter 1 Quarter 2 Supplementary Quarter 3 Supplementary 2013 2014 2014 Quarter 2 2014 2014 Quarter 3 2014 2013 2014 2014 Quarter 2 2014 2014 Quarter 3 2014 MW-30-69 5.46E+04 5.04E+04 1.13E+05 8

8 4.32E+05 7,8 8

1.29E+05 2.67E+05 MW-54-37 5.84E+03 4.33E+03 4.45E+03 NA 4.32E+03 NA 2.00E+03 4.74E+03 MW-30-84 4.66E+03 4.69E+03 9.50E+03 8

8 1.47E+04 8

8.57E+03 1.19E+04 MW-54-58 7.01E+03 6.71E+03 6.98E+03 NA 6.43E+03 NA 2.00E+03 6.78E+03 MW-31-49 1.18E+04 ND 2.22E+03 8

8 2.23E+05 8

8 1.07E+04 8.49E+04 MW-54-123 6.96E+03 7.53E+03 7.31E+03 NA 6.90E+03 NA 2.00E+03 7.18E+03 MW-31-63 3.32E+04 2.79E+04 1.22E+05 8

8 1.37E+05 8

8 3.32E+04 9.35E+04 MW-54-144 5.18E+03 6.01E+03 5.55E+03 NA 5.90E+03 NA 2.41E+03 5.66E+03 MW-31-85 2.46E+03 1.19E+03 1.04E+04 8

8 4.38E+04 8

8 6.42E+03 2.59E+04 MW-54-173 5.25E+03 5.79E+03 4.97E+03 NA 5.24E+03 NA 3.29E+03 5.31E+03 MW-32-59 2.03E+04 2.25E+03 2.15E+05 8

8 4.67E+05 8

8 1.00E+04 3.05E+05 MW-54-190 4.31E+03 5.11E+03 5.19E+03 NA 5.49E+03 NA 3.39E+03 5.03E+03 MW-32-85 7.44E+03 8.49E+03 1.26E+04 8

8 1.76E+04 8

1.58E+04 1.53E+04 MW-55-24 1.07E+03 1.13E+03 1.46E+03 8

6.10E+03 1.68E+03 8

1.29E+03 2.00E+03 2.12E+03 MW-32-149 ND ND ND 8

8 ND 8

2.00E+03 3.32E+02 MW-55-35 1.26E+03 1.42E+03 1.80E+03 8

1.80E+03 2.49E+03 8

2.84E+03 2.62E+03 1.93E+03 MW-32-173 ND ND ND 8

ND NA 2.00E+03 3.40E+03 MW-55-54 4.90E+03 4.21E+03 5.66E+03 8

1.17E+04 6.42E+03 8

1.05E+04 6.74E+03 MW-32-190 1.22E+03 8.73E+02 7.21E+02 8

5.56E+02 NA 2.26E+03 7.68E+02 MW-56-53 1.16E+03 ND 3.50E+03 NA NA NA 2.00E+03 2.33E+03 MW-33 NA NA 5.42E+03 1.54E+04 NA 6.98E+03 8.77E+03 MW-56-83 3.51E+03 8.17E+03 9.42E+03 NA NA NA 3.34E+03 7.03E+03 MW-35 NA NA ND 1.60E+03 NA 2.00E+03 5.06E+03 MW-57-11 NA NA 7.08E+03 NA NA NA 5.45E+03 7.08E+03 MW-36-24 ND ND 2.53E+03 3.70E+03 2.82E+03 8

4.41E+03 2.00E+03 3.37E+03 MW-57-20 NA NA 5.19E+03 NA NA NA 2.00E+03 5.19E+03 MW-36-41 4.03E+03 4.82E+03 6.29E+03 5.40E+03 6.15E+03 8

4.75E+03 6.19E+03 MW-57-45 NA NA 4.77E+03 NA NA NA 2.00E+03 4.77E+03 MW-36-52 4.44E+03 4.23E+03 5.00E+03 5.10E+03 4.82E+03 8

5.13E+03 8.09E+03 4.79E+03 MW-58-26 ND NA 3.42E+03 NA NA NA 2.00E+03 3.42E+03 MW-37-22 1.15E+03 1.65E+03 3.60E+03 3.90E+03 3.14E+03 8

3.84E+03 4.48E+03 2.88E+03 MW-58-65 1.04E+03 NA 1.27E+03 NA NA NA 2.00E+03 1.16E+03 MW-37-32 1.53E+03 2.82E+03 3.68E+03 4.30E+03 3.86E+03 8

4.07E+03 4.51E+03 3.38E+03 MW-59-32 NA 2.71E+03 NA NA NA NA 2.71E+03 MW-37-40 3.24E+03 3.29E+03 2.77E+03 4.30E+03 3.63E+03 8

3.95E+03 8.05E+03 3.53E+03 MW-59-45 NA 2.78E+03 NA NA NA NA 2.78E+03 MW-37-57 3.30E+03 3.23E+03 3.00E+03 5.10E+03 4.00E+03 8

4.18E+03 7.75E+03 3.80E+03 MW-59-68 NA 9.85E+02 NA NA NA NA 9.85E+02 MW-39-67 ND NA ND NA NA NA 2.00E+03 ND MW-60-35 ND ND ND NA ND NA 2.00E+03 ND MW-39-84 ND NA ND NA NA NA 2.00E+03 ND MW-60-53 ND ND ND NA ND NA 2.00E+03 ND MW-39-102 ND NA ND NA NA NA 2.00E+03 ND MW-60-72 ND ND ND NA ND NA 2.00E+03 ND MW-39-124 ND NA ND NA NA NA 2.00E+03 ND MW-60-135 ND ND ND NA ND NA 2.00E+03 ND MW-39-183 ND NA ND NA NA NA 2.00E+03 ND MW-60-154 4.27E+02 5.12E+02 5.07E+02 NA 5.32E+02 NA 2.00E+03 4.95E+02 MW-39-195 9.04E+02 NA ND NA NA NA 2.00E+03 9.04E+02 MW-60-176 1.19E+03 7.64E+02 1.09E+03 NA 1.23E+03 NA 2.00E+03 1.07E+03 MW-40-27 ND ND ND NA ND NA 1.00E+03 ND MW-62-18 ND ND ND NA ND 8

ND 2.00E+03 ND MW-40-46 ND ND ND NA ND NA 1.00E+03 ND MW-62-37 6.15E+02 7.58E+02 1.02E+03 NA 1.36E+03 8

6.00E+02 2.00E+03 8.71E+02 MW-40-81 ND ND ND NA ND NA 1.00E+03 ND MW-62-53 9.84E+02 9.38E+02 1.11E+03 NA 1.10E+03 8

1.10E+03 2.00E+03 1.05E+03 MW-40-100 ND ND ND NA ND NA 1.00E+03 ND MW-62-71 1.95E+03 1.65E+03 2.03E+03 NA 2.03E+03 8

1.90E+03 2.00E+03 1.91E+03 MW-40-127 ND ND ND NA ND NA 1.00E+03 ND MW-62-92 1.99E+03 1.61E+03 2.25E+03 NA 1.73E+03 8

2.00E+03 1.83E+03 MW-40-162 ND ND ND NA ND NA 1.00E+03 ND MW-62-138 2.93E+03 2.71E+03 3.31E+03 NA 2.50E+03 8

2.00E+03 2.46E+03 MW-41-40 1.92E+03 3.54E+03 ND NA 3.55E+03 NA 2.00E+03 3.00E+03 MW-62-182 1.65E+03 1.16E+03 1.38E+03 NA 1.41E+03 8

2.70E+03 2.00E+03 1.66E+03 MW-41-63 6.12E+02 6.81E+02 ND NA ND NA 2.00E+03 6.47E+02 MW-63-18 ND ND ND NA ND NA 2.00E+03 ND MW-42-49 2.08E+03 3

2.34E+04 7.84E+02 NA 5.96E+02 8

NA 2.00E+03 6.72E+03 MW-63-34 ND ND ND NA ND NA 2.00E+03 ND MW-42-78 ND ND 6.29E+02 NA 6.74E+02 8

NA 2.00E+03 6.52E+02 MW-63-50 5.23E+02 7.33E+02 6.89E+02 NA 1.07E+03 NA 2.00E+03 7.54E+02 MW-43-28 ND ND ND NA ND NA 2.00E+03 ND MW-63-93 6.73E+02 7.37E+02 6.93E+02 NA 1.04E+03 NA 2.00E+03 7.86E+02 MW-43-62 ND ND ND NA ND NA 2.00E+03 ND MW-63-112 1.52E+03 1.50E+03 1.37E+03 NA 1.75E+03 NA 2.00E+03 1.54E+03 MW-44-66 ND ND ND NA ND NA 2.00E+03 ND MW-63-121 1.98E+03 2.17E+03 1.83E+03 NA 2.36E+03 NA 2.00E+03 2.09E+03 MW-44-102 6.46E+02 7.05E+02 ND NA ND NA 2.00E+03 6.76E+02 MW-63-163 8.85E+02 1.23E+03 8.36E+02 NA 9.69E+02 NA 2.00E+03 9.80E+02 MW-45-42 9.76E+02 5.91E+02 7.88E+02 NA 6.03E+02 NA 3.80E+03 7.40E+02 MW-63-174 9.86E+02 1.18E+03 6.87E+02 NA 1.08E+03 NA 2.00E+03 9.83E+02 MW-45-61 4.01E+02 4.92E+02 5.74E+02 NA 6.44E+02 NA 2.16E+03 5.28E+02 MW-66-21 ND ND ND NA ND 8

8.00E+02 2.00E+03 8.00E+02 MW-46 1.91E+03 1.77E+03 1.63E+03 NA 1.12E+03 NA 2.00E+03 1.61E+03 MW-66-36 1.16E+03 1.12E+03 1.35E+03 NA 9.15E+02 8

1.20E+03 3.72E+03 1.15E+03 MW-47-56 NA 1.11E+03 1.48E+04 NA NA NA 7.96E+03 MW-67-39 1.21E+03 7.43E+02 1.24E+03 NA ND 8

2.34E+03 1.92E+03 MW-47-80 NA 1.15E+04 7.37E+03 NA NA NA 9.44E+03 MW-67-105 3.00E+03 2.95E+03 3.40E+03 NA 2.76E+03 8

2.70E+03 2.87E+03 MW-49-26 3.12E+03 2.84E+03 2.60E+03 NA 2.64E+03 8

2.57E+03 5.72E+03 2.75E+03 MW-67-173 6.40E+02 8.92E+02 8.79E+02 NA 5.81E+02 8

8.00E+02 2.00E+03 7.58E+02 MW-49-42 4.21E+03 3.65E+03 3.69E+03 NA 4.10E+03 8

3.97E+03 4.81E+03 3.92E+03 MW-67-219 1.14E+03 1.16E+03 1.26E+03 NA 8.55E+02 8

9.00E+02 2.00E+03 1.06E+03 MW-49-65 4.30E+03 4.15E+03 3.53E+03 NA 3.84E+03 8

3.86E+03 2.83E+03 3.94E+03 MW-67-276 8.60E+02 9.02E+02 8.97E+02 NA 8.47E+02 8

9.00E+02 2.00E+03 8.81E+02 MW-50-42 ND 5.20E+02 3.67E+03 NA 2.11E+03 8

2.00E+03 2.63E+03 MW-67-323 4.28E+02 4.15E+02 ND NA ND 8

ND 2.00E+03 4.22E+02 MW-50-66 3.54E+03 4.08E+03 3.79E+03 NA 4.23E+03 8

4.29E+03 5.66E+03 3.99E+03 MW-67-340 4.08E+02 6.31E+02 6.86E+02 NA ND 8

ND 2.00E+03 5.75E+02 MW-51-40 ND ND ND NA ND NA 1.00E+03 ND MW-68-19 NA 2.98E+03 2.67E+03 NA 1.72E+03 NA 6.19E+03 2.46E+03 MW-51-79 ND ND ND NA ND NA 1.00E+03 ND MW-68-29 NA 1.78E+03 1.89E+03 NA 1.38E+03 NA 1.40E+04 1.68E+03 MW-51-104 ND ND ND NA ND NA 1.00E+03 ND MW-68-57 NA 1.57E+03 1.85E+03 NA 1.93E+03 NA 7.02E+03 1.78E+03 MW-51-135 ND ND ND NA ND NA 1.00E+03 ND MW-68-103 NA 3.02E+03 2.73E+03 NA 2.15E+03 NA 2.66E+03 2.63E+03 MW-51-163 ND ND ND NA ND NA 1.00E+03 ND MW-68-132 NA 2.46E+03 2.97E+03 NA 2.52E+03 NA 2.92E+03 2.65E+03 MW-51-189 ND ND ND NA ND NA 1.00E+03 ND MW-107 NA NA ND NA NA NA 1.00E+03 ND MW-52-11 NA NA ND NA NA NA 1.00E+03 ND MW-111 2.87E+03 NA 2.38E+03 5.80E+03 6.87E+03 3.77E+03 7.54E+03 MW-52-18 NA NA ND NA NA NA 1.00E+03 ND U3-4D 1.37E+03 1.14E+03 6.91E+02 NA 1.01E+03 NA 2.00E+03 1.05E+03 MW-52-48 NA NA ND NA NA NA 1.00E+03 ND U3-4S 1.80E+03 8.30E+02 1.12E+03 NA 6.64E+02 NA 2.00E+03 1.10E+03 MW-52-64 NA NA ND NA NA NA 1.00E+03 ND U3-T1 2.99E+03 2.84E+03 1.55E+03 NA 1.26E+03 NA 2.00E+03 2.16E+03 MW-52-122 NA NA ND NA NA NA 1.00E+03 ND U3-T2 2.29E+03 1.44E+03 1.24E+03 NA 1.78E+03 NA 2.08E+03 1.69E+03 MW-52-162 NA NA ND NA NA NA 1.00E+03 ND U1-CSS 5.20E+03 1.85E+03 5.81E+03 NA NA NA 3.09E+03 4.29E+03 MW-52-181 NA NA ND NA NA NA 1.00E+03 ND U1-NCD 3.25E+03 4.63E+03 3.41E+03 5.41E+03 1.49E+04 NA 6.32E+03 MW-53-82 2.26E+03 1.14E+03 7.19E+02 NA 9.61E+02 8

NA 2.00E+03 1.27E+03 U1-SFDS ND 7.80E+03 ND 9.94E+02 ND NA 4.40E+03 MW-53-120 5.54E+03 5.85E+03 4.77E+03 NA 5.21E+03 8

NA 8.24E+03 5.34E+03 I-2 ND ND ND NA ND NA 1.00E+03 ND LAF-002 ND NA ND NA NA NA positive ND B-1 NA NA NA NA NA NA NA B-6 ND ND ND NA ND NA ND MH-5 VCFD ND 5.62E+03 5.31E+03 NA 5.26E+03 NA 5.40E+03

6) *** Multiple Sup-Q2 2014 and Sup-Q3 2014 samples were collected. Refer to Table 4 for the laboratory analytical results of these samples.

Well ID Tritium Results (pCi/L) 2014 Investigation Level Notes:

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

7) An aliquot of this sample was re-analyzed for Trtium. The original and aliquot results were 434,000 pCi/L and 418,000 pCi/L, respectively (MW-30-69; Q3 2014). In conformance with the LTMP, both results were averaged and the average was used in the annual rolling average calculations.

8) Sample aliquots were re-analyzed for Tritium at IPEC's in-house laboratory. In conformance with the LTMP, both the original and aliquot results were averaged and the average value was used in the annual rolling average calculations.

2014 Investigation Level Tritium Results (pCi/L)

Well ID Rolling Annual Average Rolling Annual Average

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

4)

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

3) An aliquot of this sample was re-analyzed for Tritium. The original and aliquot results were 2,180 pCi/L and 1,980 pCi/L, respectively (MW-42-49; Q4 2013). In conformance with the LTMP, both results were averaged and the average was used in the annual rolling average calculations.

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

shaded value