ML12277A057

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Entergy Pre-Filed Evidentiary Hearing Exhibit ENT00575C, Quarter 2011 Rolling Average Tritium Activity Map.
ML12277A057
Person / Time
Site: Indian Point  Entergy icon.png
Issue date: 09/17/2012
From:
GZA GeoEnvironmental, Entergy Nuclear Operations
To:
Atomic Safety and Licensing Board Panel
References
RAS 23568, 50-247-LR, 50-286-LR, ASLBP 07-858-03-LR-BD01
Download: ML12277A057 (5)
v • d • e


Text

cu rb s St o n e As p h a lt p a rk in As p ha Gr ass g

St o r a g e ENT00575C A Submitted: October 2, 2012 lt cu sp ha As p rb h

Con crete cu a lt rb lt cu r As p pa b Gr ha rk s in Grass G ra v el p as g

1 lt As e p pa dr As ha iv 2nd QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP rk Gravel parking lt ha in s

lt cu g Asp halt parking rb l

pa ph MW-112 G ra v e rb As p

rb As lt As p h a cu rk Con crete cu Asp ha lt cu Fuel Oil Fuel Oil in rb ha a lt g

? Storage Tank Storage Tank e

on lt St pa cu e

St o r a g rb rk i Grass lt ass ng ha Gr Asp ha lt cu As Tritium Results (pCi/L) Tritium Results (pCi/L) rb p Post Post Rolling Post Quarter Well ID Quarter 3 Post Quarter 3 Quarter 4 Post Quarter 4 Quarter 1 Quarter 2 Investigation Well ID Quarter 3 Post Quarter 3 Quarter 4 Quarter 1 Post Quarter 1 Quarter 2 Post Quarter 2 Investigation Rolling Quarter 1 Quarter 2 Annual 4 Annual Level Level 2010 2010 2010 2010 2011 2011 2011 2011 Average 2010 2010 2010 2010 2011 2011 2011 2011 Average As p h a lt MW-30-69 1.28E+05 1.23E+05_1.11E+05 1.25E+05 NA 1.01E+05 1.08E+05 1.13E+05 1.19E+05 2.14E+05 1.16E+05 MW-54-37 1.21E+03 NA 1.45E+03 NA 1.33E+03 NA 5.16E+03 2.79E+04 2.71E+03 7.41E+03 5.46E+04 cu rb rkin g MW-30-84 9.26E+03 1.00E+04_1.01E+04 1.02E+04 9.20E+03 9.04E+03 7.57E+03 1.22E+04 9.12E+03 MW-54-58 7.67E+02 8.21E+02 9.58E+02 1.48E+03 1.20E+03 in g NA 7.55E+03 NA NA NA 9.94E+02 2.48E+03 10 Grav el pa rk G ra vel p a MW-31-49 5.46E+03 4.11E+03_ 1.04E+05 3.35E+04 NA 1.06E+03 4.31E+03 1.08E+03 NA 4.28E+04 2.90E+04 MW-54-123 7.83E+02 NA 8.12E+02 NA 1.08E+03 NA 8.24E+02 5.70E+02 1.30E+03 8.14E+02 MW-31-63 6.17E+04 6.69E+04_4.65E+04 2.95E+04 NA 2.46E+04 1.33E+04 1.81E+04 NA 3.99E+04 3.72E+04 MW-54-144 1.44E+03 NA 1.34E+03 NA 1.35E+03 NA 1.48E+03 4.34E+03 2.64E+03 1.99E+03 0

MW-31-85 6.70E+03 5.07E+03_6.21E+03 6.06E+03 NA 4.83E+03 7.75E+02 3.08E+03 NA 1.46E+04 4.68E+03 MW-54-173 1.53E+03 NA 1.51E+03 NA 1.66E+03 NA 1.26E+03 1.48E+03 3.63E+03 1.49E+03 ,

MW-32-48 3.69E+03 5.90E+03 NA NA NA NA NA NA 5.83E+04*** 4.80E+03 MW-54-190 1.60E+03 NA 1.93E+03 NA 1.89E+03 NA 2.07E+03 2.37E+03 3.49E+03 1.97E+03 130 MW-32-59 6.54E+04 5.78E+03_7.44E+04 1.58E+04 NA 4.39E+03 3.37E+04 3.31E+03 NA 3.42E+04 2.90E+04 MW-55-24 1.21E+03 NA 1.39E+03 NA 1.02E+03 NA NA NA 2.58E+03 1.21E+03 MW-32-85 1.21E+04 1.38E+04_1.44E+04 1.49E+04 NA 1.34E+04 1.32E+04 1.14E+04 NA 1.63E+04 1.33E+04 MW-55-35 1.89E+03 NA 1.57E+03 NA 1.70E+03 NA NA NA 4.38E+03 1.72E+03 MW-107 MW-101 1,015' MW-32-149 3.81E+03 2.60E+03_2.12E+03 1.55E+03 NA 1.06E+03 8.99E+02 8.69E+02 NA 1.00E+03 1.84E+03 MW-55-54 9.74E+03 NA 8.68E+03 NA 8.46E+03 NA NA NA 1.28E+04 8.96E+03 140 MW-32-173 2.47E+03 2.19E+03_1.98E+03 1.40E+03 NA 9.02E+02 8.41E+02 5.82E+02 NA 1.50E+03 1.48E+03 MW-56-53 NA NA 4.64E+02 NA NA NA ND ND 1.19E+03 4.64E+02 MW-32-190 1.58E+03 1.69E+03_1.65E+03 1.53E+03 NA 1.64E+03 1.41E+03 1.21E+03 NA 4.21E+03 1.53E+03 MW-56-83 NA NA 2.74E+03 NA NA NA 7.64E+04 8.42E+04 6.39E+03 5.44E+04 Earth @

? @

? 640' MW-105 rk in g Parking MW-33 3.69E+03 3.86E+03 NA NA NA NA NA NA 6.88E+04 3.78E+03 MW-57-11 NA NA NA NA NA NA 6.40E+03 7.36E+03 8.44E+03 6.88E+03 140 As ph alt pa 115.76

?

MW-35 NA NA NA NA NA NA NA NA 2.92E+03 NA MW-57-20 NA NA NA NA NA NA 2.03E+04 3.81E+04 3.04E+03 2.92E+04 MW-36-24 2.64E+02 NA 2.62E+03 NA ND NA 3.07E+03 NA 2.56E+03 1.98E+03 MW-57-45 NA NA NA NA NA NA 1.35E+04 2.53E+04 2.38E+03 1.94E+04 ND 140 MW-36-41 1.30E+04 NA 1.22E+04 NA 8.74E+03 NA 8.17E+03 NA 2.10E+04 1.05E+04 MW-58-26 NA NA 3.66E+02 NA NA NA 7.22E+02 1.86E+03 1.00E+03 9.83E+02 MW-36-52 7.07E+03 NA 7.08E+03 NA 3.14E+03 NA 5.84E+03 NA 1.48E+04 5.78E+03 MW-58-65 NA NA 4.81E+02 NA NA NA ND 7.26E+02 1.00E+03 6.04E+02 a rk in g MW-37-22 3.70E+03 NA 4.46E+03 NA 6.74E+03 NA 6.87E+03 NA 9.19E+03 5.44E+03 MW-59-32 NA NA NA NA NA NA NA ND ** ND Asp h a lt p Storage MW-37-32 4.80E+03 NA 5.99E+03 NA 4.57E+03 NA 4.11E+03 NA 9.32E+03 4.87E+03 MW-59-45 NA NA NA NA NA NA NA 5.24E+02 ** 5.24E+02 Gravel rk in g Stora ge units MW-37-40 7.00E+03 NA 6.41E+03 NA 5.97E+03 NA 3.92E+03 NA 9.02E+03 5.83E+03 MW-59-68 NA NA NA NA NA NA NA ND ** ND storage As ph alt pa Grass MW-37-57 7.30E+03 NA 6.72E+03 NA 5.63E+03 NA 5.81E+03 NA 9.62E+03 6.37E+03 MW-60-35 2.35E+02 NA ND NA NA NA ND NA 2.00E+03 2.35E+02 rkin g MW-39-67 2.86E+02 NA ND NA NA NA 1.09E+04 2.24E+03 1.00E+03 4.48E+03 MW-60-53 2.58E+02 NA ND NA NA NA ND NA 2.00E+03 2.58E+02 LEGEND G ra vel p a Gravel Boring / Monitoring Installation Designation MW-39-84 3.70E+02 NA ND NA NA NA 4.40E+02 ND 1.00E+03 4.05E+02 MW-60-72 ND NA ND NA NA NA ND NA 2.00E+03 ND No Access MW-30 MW-39-102 2.39E+02 NA ND NA NA NA 1.43E+04 1.24E+04 1.00E+03 8.98E+03 MW-60-135 1.87E+02 NA ND NA 3.98E+02 NA 4.14E+02 NA 2.00E+03 3.33E+02 MW-39-124 ND NA ND NA NA NA ND ND 1.00E+03 ND MW-60-154 2.93E+02 NA 4.68E+02 NA 5.44E+02 NA ND NA 2.00E+03 4.35E+02 Longterm Radionuclide Monitoring Installation MW-39-183 ND NA ND NA NA NA ND ND 1.00E+03 ND MW-60-176 8.13E+02 NA 8.33E+02 NA 1.12E+03 NA 8.99E+02 NA 2.00E+03 9.16E+02 MW-39-195 MW-40-27 ND 1.93E+02 NA NA ND 2.06E+02 NA NA NA ND NA NA 7.04E+03 ND 4.19E+03 ND 1.00E+03 1.00E+03 5.62E+03 2.00E+02 MW-62-18 MW-62-37 ND 1.91E+02 NA NA ND ND NA NA ND ND NA NA ND ND ND ND 2.00E+03 2.00E+03 ND 1.91E+02 MW-110

?

Standby Radionuclide Monitoring Installation Asphalt MW-40-46 ND 1.63E+02 ND ND 1.00E+03 1.63E+02 MW-62-53 1.59E+02 ND ND ND 2.00E+03 1.59E+02

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NA NA NA ND NA NA NA ND e

Asp ha lt driv MW-40-81 MW-40-100 ND ND NA NA 2.48E+02 ND NA NA ND ND NA NA ND ND ND ND 1.00E+03 1.00E+03 2.48E+02 ND MW-62-71 MW-62-92 3.25E+02 3.18E+02 NA NA 4.17E+02 4.82E+02 NA NA 5.38E+02 5.09E+02 NA NA ND 5.06E+02 ND 5.61E+02 2.00E+03 2.00E+03 4.27E+02 4.75E+02 @

?

Active Storm Drain MW-40-127 ND NA ND NA ND NA ND ND 1.00E+03 ND MW-62-138 5.91E+02 NA ND NA 5.17E+02 NA 6.31E+02 4.66E+02 2.00E+03 5.51E+02 MW-40-162 ND NA ND NA ND NA ND ND 1.00E+03 ND MW-62-182 2.78E+02 NA 4.76E+02 NA ND NA ND ND 2.00E+03 3.77E+02 MW-41-40 2.79E+03 NA 2.43E+03 NA 2.03E+03 NA 4.51E+03 6.99E+02 1.00E+03 2.49E+03 MW-63-18 ND NA 1.97E+02 NA r b 4.90E+02 NA ND ND 2.00E+03 3.44E+02 u

Abandoned Storm Drain c4.35E+02 MW-41-63 5.18E+02 NA 5.06E+02 NA 1.23E+03 NA 7.58E+02 7.14E+02 1.00E+03 7.45E+02 MW-63-34 1.89E+02 NA 3.41E+02 NA 2.98E+02 NA ND ND 2.00E+03 2.76E+02 rb MW-42-49 1.69E+03 NA 1.28E+03 NA 1.49E+03 NA 1.71E+03 NA 3.16E+04 1.54E+03 MW-63-50 2.72E+02 NA 3.29E+02 NA NA ND ND 2.00E+03 3.45E+02 Con crete cu MW-42-78 6.31E+02 NA 6.13E+02 NA 5.98E+02 NA 6.26E+02 NA 1.00E+03 6.17E+02 MW-63-93 1.95E+02 NA 2.39E+02 NA ND NA ND ND 2.00E+03 2.17E+02 W oo d e n Catch Basin MW-43-28 ND NA 1.95E+02 NA ND NA ND NA 1.00E+03 1.95E+02 MW-63-112 3.71E+02 NA 3.01E+02 NA 3.38E+02 NA ND 6.01E+02 2.00E+03 4.03E+02 park ing MW-43-62 ND ND ND ND 1.00E+03 ND MW-63-121 5.39E+02 5.20E+02 5.03E+02 2.00E+03 6.94E+02 120 Grav el NA NA NA NA NA NA NA 5.77E+02 1.33E+03 C

MW-44-66 1.75E+02 NA 3.10E+02 NA 4.57E+02 NA 6.87E+02 1.62E+03 1.00E+03 6.50E+02 MW-63-163 4.13E+02 NA 4.44E+02 NA 6.05E+02 NA ND 5.08E+02 2.00E+03 4.93E+02 NA rbs ub 4.47E+02 ne Sto cu on Footing Drain s

120 MW-44-102 2.76E+02 NA 3.93E+02 NA 6.70E+02 6.38E+02 1.00E+03 4.85E+02 MW-63-174 3.33E+02 NA 2.63E+02 NA 4.13E+02 NA ND ND 2.00E+03 3.36E+02 cr 110 Sh et MW-45-42 3.69E+03 NA 2.74E+03 NA 8.12E+03 NA 8.56E+03 3.94E+04 5.90E+03 1.25E+04 MW-65-48 NA NA NA NA NA NA NA ND ** ND r

e MW-45-61 1.00E+03 NA 1.51E+03 NA 1.84E+03 NA 2.03E+03 5.63E+03 2.65E+03 2.40E+03 MW-65-80 NA NA NA NA NA NA NA ND ** ND cu 10 MW-46 1.92E+03 NA 3.13E+03 NA 2.47E+03 NA 5.25E+03 3.08E+03 1.84E+03 3.17E+03 MW-66-21 1.07E+03 NA ND NA 4.77E+02 NA ND NA 1.33E+03 7.74E+02 0

MW-47-56 ** MW-66-36 3.08E+03 3.13E+03 3.01E+03 7.71E+03 3.19E+03 rb Localized Transient Releases (Surface Spills and Washout) 100 NA NA NA NA NA NA NA 3.52E+03 3.52E+03 NA NA NA 3.52E+03 NA 120 10 0

  1. 4# # # Transient Distillate Tank Valve Leak in MW-47-80 NA NA NA NA NA NA NA 1.36E+05 ** 1.36E+05 MW-67-39 3.37E+03 NA 3.56E+03 NA 3.85E+03 NA 3.73E+03 NA 6.52E+03 3.63E+03 ub 90 s

0 MW-49-26 3.03E+03 NA 2.59E+03 NA 3.17E+03 NA 3.29E+03 NA 6.52E+03 3.02E+03 MW-67-105 1.26E+03 NA 1.14E+03 NA 9.94E+02 NA 1.10E+03 NA 3.92E+03 1.12E+03 MW-49-42 2.27E+03 2.39E+03 2.45E+03 4.97E+03 2.25E+03 MW-67-173 6.72E+02 6.25E+02 ND 1.61E+03 6.23E+02 Sh 11 110 NA NA NA 1.90E+03 NA NA NA NA 5.72E+02 NA Con crete Unit 1 Fuel Storage Building - 3/07/2009 r

110 MW-49-65 1.32E+03 NA 1.37E+03 NA 1.94E+03 NA 2.38E+03 NA 3.03E+03 1.75E+03 MW-67-219 1.11E+03 NA 1.15E+03 NA 6.41E+02 NA 90 1.07E+03 NA 2.26E+03 9.93E+02 80 MW-50-42 1.61E+02 NA 8.67E+02 NA 5.61E+02 NA 3.77E+03 1.03E+03 1.04E+03 1.28E+03 MW-67-276 9.33E+02 NA 1.01E+03 NA 8.75E+02 NA 1.06E+03 NA 2.01E+03 9.70E+02 0

MW-50-66 3.51E+03 NA 3.72E+03 NA 3.76E+03 NA 4.73E+03 6.50E+03 5.90E+03 4.44E+03 MW-67-323 4.32E+02 NA ND NA ND NA 4.26E+02 NA 1.00E+03 4.29E+02 90 11 MW-51-40 1.70E+02 1.48E+02 ND ND 1.00E+03 1.59E+02 MW-67-340 4.86E+02 5.31E+02 ND 1.01E+03 5.58E+02 Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09(initial)

NA NA NA NA NA NA NA 6.56E+02 NA pNA 5 m

MW-51-79 1.10E+02 NA ND NA ND NA ND NA 1.00E+03 1.10E+02 MW-107 NA NA NA NA NA ND NA 1.00E+03 ND ra NA MW-51-104 ND NA ND NA ND NA cu rb s ND NA 1.00E+03 ND MW-108 NA NA NA cap i

NA NA NA NA A NA 1.24E+03 ** 1.24E+03 G

Transient Spill from Temporary R.O. Skid Piping -

on /

MW-51-135 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-109 NA NA NA NA NA 2.43E+03 ** 2.43E+03 a nd C c u MW-51-163 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-111 3.86E+04 4.69E+04 4.59E+04 NA NA NA NA NA 6.15E+04 4.38E+04 H o n ni 6.73E+02 ub cr t s 6 p

^

MW-51-189 ND NA ND NA ND NA ND NA 1.00E+03 ND U3-3 NA NA NA NA NA NA NA ** 6.73E+02 Entered MW-32 Vault and MH Q4 2009 ad et ND e Sh MW-52-11 NA NA NA NA NA NA ND ND 1.00E+03 ND U3-4D 6.84E+02 NA 7.12E+02 NA 6.28E+02 NA 7.41E+02 1.00E+03 6.91E+02 r

MW-52-18 NA NA NA NA NA NA ND ND 1.00E+03 ND U3-4S 3.74E+02 NA 3.51E+02 NA NA NA ND ND 1.00E+03*** 3.63E+02 Sample Sink Overflow - Unit 1 Chemical Systems Building MW-52-48 ND ND 1.00E+03 ND U3-T1 3.84E+02 3.04E+02 6.55E+02 7.82E+02 Sh 1.00E+03 5.31E+02 NA NA NA NA NA NA NA NA NA NA ru bs MW-52-64 NA NA NA NA NA NA ND ND 1.00E+03 ND U3-T2 8.76E+02 NA 1.47E+03 NA 2.27E+03 NA 3.83E+03 2.67E+03 2.08E+03 2.22E+03 MW-52-122 MW-52-162 MW-52-181 MW-53-82 MW-53-120 NA NA NA 2.25E+03 3.81E+03 NA NA NA NA NA NA NA NA 2.59E+03 3.91E+03 NA NA NA NA NA NA NA NA 5.95E+02 3.84E+03 NA NA NA NA NA ND ND ND 6.24E+02 4.11E+03 ND 5.16E+02 ND NA NA 1.00E+03 1.00E+03 1.00E+03 3.83E+03 1.05E+04 ND 5.16E+02 ND 1.51E+03 3.92E+03 U1-CSS U1-NCD U1-SFDS I-2 LAF-002 NA 1.35E+04 6.44E+02 ND NA NA TransformerNA NA 2.26E+03 3.34E+03 4.82E+02 NA NA ND ND NA NA NA NA NA NA NA NA NA A/C NA NA NA NA NA NA 6.38E+03 NA NA NA ND 1.08E+04 NA NA NA NA 5.17E+03 1.00E+03***

positive 6.48E+03 8.42E+03 5.63E+02 ND ND Grass Concrete curb X 7 XXX Q2 2011 Probable Legacy Release SSCs Parking lot B-1 1.40E+04 2.37E+03 UNIT 3.82E+03 8.10E+03

  • 7.07E+03 Unit 2 Fuel Pool NA NA NA NA B-6 ND NA ND NA 8.39E+02 NA 2.68E+03 5.39E+02
  • 1.35E+03 MH-5 VCFD 9.96E+03 7.32E+02_8.80E+02 4.60E+02 NA 5.17E+03 NA 1.25E+04 2.97E+03****
  • 4.73E+03 Asphalt As 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 ph (All identified leaks repaired as of December 2007)

Unit 1 West Fuel Pool al t

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 E16A Covered Concrete exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

2) A shaded shadedvalue 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. Shrubs E16 (All U1-SFPs drained and inactive as of October 2008) 70 Terminated Connection To Storm Drain
3) To be conservative, the 2011 Tritium I.L.s were calculated using (2x the 2009 rolling average) due to an increased Tritium activity observed in multiple Unit 2 wells during 2010 in response to the transient surface spill from the temporary, rental RWST/R.O. processing skid. CB-7 Grass 11
4)
  • Indicates storm or foundation drain sampling locations, for which investigation levels are not applicable.

Drain Exfiltration

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

80

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

al t Inter-Structure Joint / Mud Mat

7) **** Four Post-Q2 2011 MH-5 VCFD samples were collected. Their results were: 2.97E+03, 9.86E+03, 2.89E+03 and 1.86E+03. All results are included in the rolling annual average. CB-27 ph Asphalt As Grass CB-5B Containment Spray Sump Trench Transformer Substation "H" Asphalt drive CB-5 CB-5A Asphalt Depth-Specific Data (CB-6) E15A Average activity of H3 (pCi/L x1000) for each screened Interval.

Asphalt Grass 25.21 4.475 CB-6 AB CB-24 E15 11.3 Concrete curb MW-65 25.12 0.405 1.2 Asphalt

? CB-28 Tank Depth Trans Storage 11.9 42.3 Multiple CB-3B Tank ND 24.79 8.98 E14 Tank Screened MW-51 Screened in Soil 12.6 56.0 Intervals 33' Tank 42.5' 32.72 Asphalt parking 33'X YX X YX YX YX YXYX YXYX YXYX YXYX YX YX YX YX YX YX YXYX YXYX YXYX YX YX YX YX YXYX YXYX YXYX YXY ND 42.5' 33' 24.43 ND (U1-CB-8) @

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  1. A5 0.159 YX X YX YXYX YXYX YXY E1 49.24 Screened in Bedrock 4

East Fuel Pool 12.8 255.0 7

X YX X YX Y YX YX YXYX YXYX YXYX YXYX YXYX YXYX YXY 23.79 ST O RA GE 1

PO O L ND 20 Trailer Tank 40.36 YX X YX

  1. ## ## # 0.11 YXYX YXYX YX 5.615 CAS K W AS H &

22.7 A3A 1Groundwater elevation for each screened interval at time of low river tide YX YX A6 DIS ASS EM B LY CAS K L O AD Y

ISO L AT IO N PI T Y

X 80 PO O L A4 WEST 1 36.03 for Q4 2008 (11/11/2008).1 Asphalt 13

" @ MW-39 ST O RA GE MH16 FUEL ND DIS ASS EM B LY PO O L Containers

?

PO O L POOL F UEL T RAN SF E R PO O L Y X

CB3A Activity Data1,2 FA IL ED F U EL CB4 37.68 PU MP AUX . PO O L SU CTI ON UTILITY TUNNEL ND WELL U1-SFDS Tank A3 e

iv Dr Concrete curb YX YXYX Y

45.79 4.795 3

33.9 Bar Graphs; Average H3, pCi/L Isopleths; Average H3, pCi/L YX X

0.563 WAT ER ND ST O RA GE MW-41 MW-43 33' PO O L Tank Pit Water No Depth-Specific Samples 5,000 - 10,000 CB3 lt

? @

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As p h a 28.969 E2B E2C MW-42 Tank 29.36 Storage 44.48 ND F5 lt ha Storage @

? Tank U3-CB (U1-CB-9)

Tank DRY 32.15 0.195 Not Detected (ND) 10,000 - 50,000 Tank 13.314 sp 4

12.16 ND A

MH22 1.543 D r iv e A/C U nits 34.43

    1. F6 2.492 28.951 30.71 31.76 F7 44.13 A2A ND ND - 1,000 50,000 - 100,000 UNIT 1 0.56 11.53 35.07 0.617 90 YX X YX YXYX YXYX YXYX YXYX YXYX YXYX YXYX YXYX YXYX YXYX Y CB-29 Unit 2 YX X YX YXYX YXYX YXY 0.7452 MH10 CB-2C 37.229 26.96 Condensate 41.21 Transformers 1,000 - 5,000 U3-MH-14

> 100,000 Storage Tank 9.77 1.844 on raised 2.8 Asphalt Concrete Pad 4.675 39.64 MW-45 5,000 - 10,000 Asphalt 9.45 22.37 1.481 A

sp 3.52 ha Storage YX X A1 @

? 6.25 U1-NCD Y

MW-31 @

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lt Note: Illustration of contaminant plume is a schematic As MH21 MH9 MH-20 CB-2B YX X

12.502 Y

21.08 A2 10,000 - 50,000 ph MH11 7.05 1.53

    1. 3 136 25.45 representation only. In reality, the geologic bedrock 33X 5 32.2 Y

I-2 alt

    1. 8.42 Y X ' X Y

@ MW-47 MW-44 G E2 formation is over 99% solid, crystalline rock, with the F3 MW-32 E2A

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  1. Y X

@6

? # # 22.75' Y

X CB-30 U3-CB @

? 26.68 2.402 50,000 - 100,000

  1. Y X

contaminated water contained only in the remaining (U1-CB-10)

FUEL POOL 65

    1. Y X

? Liquid

^ MW-56 F2 F4 CB Y

X 0.6498 Nitrogen

    1. 33 ' YX X Y (less than 1%) interstitial space (i.e. fractures).

34 MW-30 @

    1. YX Y

Tank CB-2A 70 YX  ? A7

@RW-1

    1. X MW-53 100,000 - 200,000 50.75 PAB YX Y YX X Y 80 CB-B YX ND 90 @?

? @

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YX X YX YXYX 0.4848 155 Asphalt YX X YX YXYX YXYX YXYX YXYX YXYX YXYX YXYX Y

21.9 0.464 80 25.16 CSS TRENCH Courtyard AL LEY WAY CB-E 11.71 1.515 CB-31

> 200,000 116 29.05 Transformers 70 Transformers 54.447 260 on raised Concrete slab Condensate F1 Asphalt parking MH18 Concrete Pad 21.51 Tank U1-CB-21 12.36 9.115 U1-CB-22 3.918 H3 data x1,000 pCi/L 60 CB-2 Asphalt 21.75' CB-32 B-1 MW-34 MH17 CB-1 6.48 ROOF DRAIN ELEVATION 65' 70 MW-46 Groundwater Elevation Contours ROOF DRAIN 3

MW-35 7.0725 MH8 Transformer area and switch gear UNIT 2 UNIT 3 MW-33 U1-CSS U1-CB-20

@ Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 43.8'

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@ ?

@ ?

Trans 43.8' Storage Tanks

?

43.8' 13'  ? 1 1 TUNNEL Stone retaining wall B1 20 Gravel 12.81 43.8' 3.17 10.68 Contours Other Than 10' Interval 10.6 3.775 CSS 50 (EL.=0.0) 10.54 MW-40 E3B 5 B2A E3A  %

MH-23 B2 MW-111  % % %

Vadose Zone Contaminant Transport MH7 @

? 6.41 7.41 Ope n gr at e CB-12 E3

?  %

0.1995 Trans Mach.

54.22 10.48 43.8 stand 1.204 40 Gravel 5.76 Notes :

52.35 0.163 1. Groundwater contours drawn from Q4 2008 groundwater data to show groundwater conditions used for recalibration of the MH-5 VCFD MH-19 30 Transform er yard Gravel CB-16 4.06 0.8138 30 D1 Precipitation Mass Balance Model (see Q2 2009 LTM Report). These contours developed from limited data recorded on MW-57 11/11/2008. Actual elevations may vary from conditions shown and the actual distribution of piezometric heads is likely more 3

4.7282 B4A 46.83 0.248 complex than indicated.

B3 Vent pit p MH-5 MH23A Trans MW-55 6.97 1.99 @

?

As MH-6 1 Data Notes:

B3A

?

UTILITY 44.32 50 10.27 6.88

1. Average Tritium isopleths and activity values are yearly rolling arithmetic averages of the current and preceeding three ha ND lt Transformer Yard 9.02 1.207 3.29 1.488 MW-108 B5 B4 CB-F

" quarters' data. Only values greater than the MDC are used in this average, thus adding a degree of conservatism to the U2-C1 @ 9.92 43.87 subsequent dose computations.

MW-36 29.2 iv

? CB-13 Conc rete Retainin g Wa ll dr E4 ND 1.972 @

? 2. Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99%

8.44 MH-4 MH-4A @

? 8.3 3.13 MW-54 1 e

ND 1.72 40 solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e.

? 19.4 9.02 1.24 Trans. E4A 40.66 ND " fractures).

6.02 9.05 1.985

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

B6A ND 8.82 8.96 MW-37 4. Historically elevated Tritium levels in MW-42-49 observed during Q1 2009 were consistent with leakage visually identified on 10.528 @

? 0.98267 B-6 Asphalt 6.14 7.19 03/07/2009 (and terminated immediately thereafter) from the waste distillate tank valves located within the Unit 1 fuel storage MW-52 ND building. Data trends through Q1 2010 indicate that the observed Tritium peaks in MW-42-49 and downgrading wells 1.35267 3

? 5.55 5.443 0.6035 associated with this release have dissipated through the groundwater flow system.

7.45 5.783 6.46 1 MW-109 30 5.16 ND 5. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with an increased activity 5.64 4.868 CB-17 7.06 1.278 MW-58 ?

? B6 U3-T2 " observed in Unit 3 Manhole A2. This release was initially detected in a storm drain sample collected 03/25/2009 under the 80-

? U3-T1 10 Effluents Program. This Tritium peak dissipated prior to samples taken during the subsequent quarter. Additionally, Asphalt 4.55 CB-14 ND 8.94 0.673 2.34 4.444 7.88 2.43

? transient Tritium peaks have been recently detected in MH-A2 from Q3 2010 to Q2 2011. These increases are consistent with MW-50 B7 3.76 2.223 6.04 5.825 elevated Tritium levels in MW-41-40, MW-46 and B-1. Based on investigations initiated in, and ongoing since, 2009 and the

-1.3 0.516 MW-64 U3-3 @

? 3.69 0.531 E5 1 more recent sampling of the Unit 3 Fuel Storage Building (FSB) roof drains, it has been concluded that these increases in

?  ? D2 20 storm drain and monitoring well Tritium activity are due to condensation of SFP evaporation on the FSB roof (Washout) when 7.2 6.365 " the exhaust fan is not operating, which then enters the roof drains and discharges directly into MH-A2 during rainfall events.

-1.64 ND Trans.

@ U3-2

? E5A 6. Elevated levels of Tritium detected in MH-9 and MH-10a during routine 80-10 Effluents Program sampling on 1/15/2010 appears to have originated from a Q4 2009 transient leak in temporary RWST / R.O. skid connection hoses, which flowed into 60 MH3 Overhead C-1 U3-C1 Crane MH-9. It also appears that this release entered the well vault for MW-32, and may have penetrated the well casings and

? 3.81 0.3625 entered the subsurface around the monitoring installation.

MW-49 0.691 2.69 E11

? 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 50 Asphalt 0.81

?

0.47 ND MW-59 U3-1 @

? @

U3-4D ? @ U3-4S

? sampling event appear to have originated from a Q2 2011 sample sink overflow and subsequent floor flooding in a Unit 1 1 0.49 0.3435 Chemical Systems Building sample room on the 53 elevation.

40 3.02 -0.08 B8 50 Transformers 2.52 0.524 1 "1 Yard 10 30 (Gravel) CB-34 General Notes: E12 DISCHARGE MH-2 0.235 2.253 40 2.04 0.68 -0.13 0.276 MW-67 Concrete

" 1 30 1 CB-19

-1.79 ND Bridge CANAL Asphalt parking

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".

"20 0.258 CB-18

? 0.3453 1 Overhea d walkway 1.753

-2.03 MH13 MH15 0.47 3.6275

-1.24 C Tank 5

C-3 "101 MW-60

-0.02

?

o B nc ri r d et

" MW-66 MW-63 -0.98 ge e E6 E9 E10 1

-0.91 ND 0.16 1.124 MW-62 0.217 5 @

? @

? E8

"  ?

0.29 0.7735

? CB-33

-1.02 0.333 MW-61 0.4028 MW-48 CB-23 -0.12 -2.26

-0.82 0.623 ND CB-15 C2 MH1 0.1 3.185 0.6938

?

0.91625 0.435

-2.25 E7 0.191 0.9928 MH12 -0.15 -0.86

-0.86 -0.48 MH14

-2.59 0.159 0.4925 50 25 0 50 100 150 0.9695

-0.84 -1.54 MW-38

-0.14 -0.15 E13 HR-1 Feet

-1.24 0.4267 -1.19 0.3363

?

-1.93 0.429

? Rip-rap 1.22 0.4752

-1.69 0.5577

-1.56 -0.85 GZA GeoEnvironmental, Inc.

-0.37 0.5513 One Edgewater Drive Norwood, MA 02062 OUTFALL Concrete pier OUT-1 Phone: (781) 278-3700 Fax: (781) 278-5701

-1.85 0.377 No Access this Area

? INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK Plant North 2nd QUARTER 2011 ROLLING N

N HUDSON  !

RIVER AVERAGE TRITIUM ACTIVITY MAP 1

09-17-2012 6-Q2 Dwg. Date: Figure No.:

Proj. Mgr.: MJB Designed By: MJB Reviewed By: MJB Operator: GAS Job No.:

01.0017869.92

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

cu rb s St o n e As p h a lt p a rk in g

As p e

St o r a g Gr ha ass A

lt sp 3rd QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP cu ha As p rb h

Con crete cu a lt rb lt cu r 1

As p pa b Gr ha rk s in Grass g G ra v el As p as lt e

p pa dr As ha rk iv Gravel parking lt ha in s

lt cu g Asp halt parking rb l

pa ph MW-112 G ra v e rb As p

rb As lt As p h a cu rk Con crete cu Asp ha lt cu Fuel Oil Fuel Oil in rb ha a lt g

? Storage Tank Storage Tank e

on lt St pa cu e

St o r a g rb rk i Grass lt ass ng ha Gr Asp ha lt cu As Tritium Results (pCi/L) Tritium Results (pCi/L) rb p Post Post Rolling Post Quarter Rolling Well ID Quarter 4 Post Quarter 4 Quarter 1 Post Quarter 1 Quarter 2 Quarter 3 Investigation Well ID Quarter 4 Post Quarter 4 Quarter 1 Quarter 2 Post Quarter 2 Quarter 3 Post Quarter 3 Investigation Quarter 2 Quarter 3 Annual 1 Annual Level Level 2010 2010 2011 2011 2011 2011 2011 2011 Average 2010 2010 2011 2011 2011 2011 2011 2011 Average MW-30-69 1.25E+05 NA 1.01E+05 1.08E+05 1.13E+05 1.19E+05 1.14E+05 NA 2.14E+05 1.13E+05 MW-54-37 1.45E+03 NA 1.33E+03 NA 5.16E+03 2.79E+04 3.13E+04 NA 2.71E+03 1.34E+04 5.46E+04 MW-30-84 1.02E+04 NA 9.20E+03 9.04E+03 7.57E+03 7.55E+03 7.06E+03 NA 1.22E+04 8.44E+03 MW-54-58 8.21E+02 NA 9.58E+02 NA 9.94E+02 2.48E+03 4.23E+03 NA 1.48E+03 1.90E+03 As p h a lt cu rb in g rkin g MW-31-49 3.35E+04 1.06E+03 4.31E+03 1.08E+03 4.98E+03 4.28E+04 8.99E+03 MW-54-123 8.12E+02 1.08E+03 1.30E+03 8.99E+02 10 Grav el pa rk NA NA NA NA NA 8.24E+02 5.70E+02 1.21E+03 NA G ra vel p a MW-31-63 2.95E+04 NA 2.46E+04 1.33E+04 1.81E+04 NA 1.63E+04 NA 3.99E+04 2.04E+04 MW-54-144 1.34E+03 NA 1.35E+03 NA 1.48E+03 4.34E+03 5.27E+03 NA 2.64E+03 2.76E+03 0

MW-31-85 6.06E+03 NA 4.83E+03 7.75E+02 3.08E+03 NA 4.82E+03 NA 1.46E+04 3.91E+03 MW-54-173 1.51E+03 NA 1.66E+03 NA 1.26E+03 1.48E+03 1.50E+03 NA 3.63E+03 1.48E+03 ,

MW-32-48 NA NA NA NA NA NA NA NA 5.83E+04*** NA MW-54-190 1.93E+03 NA 1.89E+03 NA 2.07E+03 2.37E+03 3.31E+03 NA 3.49E+03 2.31E+03 MW-32-59 1.58E+04 NA 4.39E+03 3.37E+04 3.31E+03 NA 2.06E+04 NA 3.42E+04 1.56E+04 MW-55-24 1.39E+03 NA 1.02E+03 NA NA NA 1.71E+03 NA 2.58E+03 1.37E+03 ,

130 MW-32-85 1.49E+04 NA 1.34E+04 1.32E+04 1.14E+04 NA 1.14E+04 NA 1.63E+04 1.29E+04 MW-55-35 1.57E+03 NA 1.70E+03 NA NA NA 2.94E+03 NA 4.38E+03 2.07E+03 MW-32-149 1.55E+03 NA 1.06E+03 8.99E+02 8.69E+02 NA 9.86E+02 NA 1.00E+03 1.07E+03 MW-55-54 8.68E+03 NA 8.46E+03 NA NA NA 8.53E+03 NA 1.28E+04 8.56E+03 MW-32-173 1.40E+03 9.02E+02 8.41E+02 5.82E+02 5.69E+02 1.50E+03 8.59E+02 MW-56-53 4.64E+02 ND ND 1.19E+03 4.64E+02 MW-107 MW-101 1,015' 140 NA NA NA NA NA NA ND NA MW-32-190 1.53E+03 NA 1.64E+03 1.41E+03 1.21E+03 NA 1.44E+03 NA 4.21E+03 1.45E+03 MW-56-83 2.74E+03 NA NA NA 7.64E+04 8.42E+04 NA 1.05E+05 6.39E+03 6.71E+04 Earth @

? @

? 640' MW-105 rk in g MW-33 NA NA NA NA NA NA NA NA 6.88E+04 NA MW-57-11 NA NA NA NA 6.40E+03 7.36E+03 NA 7.27E+03 8.44E+03 7.01E+03 Parking 140 As ph alt pa MW-35 NA NA NA NA NA NA NA NA 2.92E+03 NA MW-57-20 NA NA NA NA 2.03E+04 3.81E+04 NA 2.47E+04 3.04E+03 2.77E+04 MW-36-24 2.62E+03 NA ND NA 3.07E+03 NA 1.12E+03 NA 2.56E+03 2.27E+03 MW-57-45 NA NA NA NA 1.35E+04 2.53E+04 NA 2.46E+04 2.38E+03 2.11E+04 115.76 ND @

?

140 MW-36-41 1.22E+04 NA 8.74E+03 NA 8.17E+03 NA 5.90E+03 NA 2.10E+04 8.75E+03 MW-58-26 3.66E+02 NA NA NA 7.22E+02 1.86E+03 NA 2.47E+03 1.00E+03 1.35E+03 MW-36-52 7.08E+03 NA 3.14E+03 NA 5.84E+03 NA 4.69E+03 NA 1.48E+04 5.19E+03 MW-58-65 4.81E+02 NA NA NA ND 7.26E+02 NA 1.10E+03 1.00E+03 7.69E+02 a rk in g MW-37-22 4.46E+03 NA 6.74E+03 NA 6.87E+03 NA 4.52E+03 NA 9.19E+03 5.65E+03 MW-59-32 NA NA NA NA NA ND NA 4.74E+02 ** 4.74E+02 MW-37-32 5.99E+03 NA 4.57E+03 NA 4.11E+03 NA 5.23E+03 NA 9.32E+03 4.98E+03 MW-59-45 NA NA NA NA NA 5.24E+02 NA 1.24E+03 ** 8.82E+02 Asp h a lt p Storage LEGEND MW-37-40 6.41E+03 NA 5.97E+03 NA 3.92E+03 NA 5.03E+03 NA 9.02E+03 5.33E+03 MW-59-68 NA NA NA NA NA ND NA ND ** ND Gravel rk in g Stora ge units storage MW-37-57 6.72E+03 5.63E+03 9.62E+03 5.82E+03 MW-60-35 ND 2.00E+03 4.99E+02 As ph alt pa NA NA 5.81E+03 NA 5.11E+03 NA NA NA NA ND NA 4.99E+02 NA Grass rkin g MW-39-67 ND NA NA NA 1.09E+04 2.24E+03 NA 1.49E+04 1.00E+03 9.35E+03 MW-60-53 ND NA NA NA ND NA 5.16E+02 NA 2.00E+03 5.16E+02 G ra vel p a MW-39-84 ND NA NA NA 4.40E+02 ND NA ND 1.00E+03 4.40E+02 MW-60-72 ND NA NA NA ND NA 2.91E+02 NA 2.00E+03 2.91E+02 Gravel Boring / Monitoring Installation Designation MW-39-102 ND NA NA NA 1.43E+04 1.24E+04 NA 1.90E+04 1.00E+03 1.52E+04 MW-60-135 ND NA 3.98E+02 NA 4.14E+02 NA 4.00E+02 NA 2.00E+03 4.04E+02 No Access MW-39-124 ND NA NA NA ND ND NA ND 1.00E+03 ND MW-60-154 4.68E+02 NA 5.44E+02 NA ND NA 5.89E+02 NA 2.00E+03 5.34E+02 MW-30 Longterm Radionuclide Monitoring Installation MW-39-183 ND NA NA NA ND ND NA ND 1.00E+03 ND MW-60-176 8.33E+02 NA 1.12E+03 NA 8.99E+02 NA 9.72E+02 NA 2.00E+03 9.56E+02 MW-39-195 ND NA NA NA 7.04E+03 4.19E+03 NA 1.72E+04 1.00E+03 9.48E+03 MW-62-18 ND NA ND NA ND ND 4.04E+02 NA 2.00E+03 4.04E+02 MW-40-27 2.06E+02 NA ND NA ND ND NA NA 1.00E+03 2.06E+02 MW-62-37 ND NA ND NA ND ND ND NA 2.00E+03 ND MW-110

?

Standby Radionuclide Monitoring Installation Asphalt MW-40-46 1.63E+02 NA ND NA ND ND NA NA 1.00E+03 1.63E+02 MW-62-53 ND NA ND NA ND ND 4.12E+02 NA 2.00E+03 4.12E+02

?

e Asp ha lt driv MW-40-81 2.48E+02 NA ND NA ND ND NA NA 1.00E+03 2.48E+02 MW-62-71 4.17E+02 NA 5.38E+02 NA ND ND 5.14E+02 NA 2.00E+03 4.90E+02 MW-40-100 MW-40-127 ND ND NA NA ND ND NA NA ND ND ND ND NA NA NA NA 1.00E+03 1.00E+03 ND ND MW-62-92 MW-62-138 4.82E+02 ND NA NA 5.09E+02 5.17E+02 NA NA 5.06E+02 6.31E+02 5.61E+02 4.66E+02 5.61E+02 1.42E+03 NA NA 2.00E+03 2.00E+03 5.24E+02 7.59E+02

?

Active Storm Drain MW-40-162 ND NA ND NA ND ND NA NA 1.00E+03 ND MW-62-182 4.76E+02 NA ND NA ND ND 5.84E+02 NA 2.00E+03 5.30E+02 MW-41-40 2.43E+03 NA 2.03E+03 NA 4.51E+03 6.99E+02 5.94E+02 NA 1.00E+03 2.05E+03 MW-63-18 1.97E+02 NA 4.90E+02 NA ND r b ND ND NA 2.00E+03 3.44E+02 cu ND Abandoned Storm Drain MW-41-63 5.06E+02 NA 1.23E+03 NA 7.58E+02 7.14E+02 6.60E+02 NA 1.00E+03 7.74E+02 MW-63-34 3.41E+02 NA 2.98E+02 NA ND ND 3.61E+02 NA 2.00E+03 3.33E+02 MW-42-49 1.28E+03 NA 1.49E+03 NA 1.71E+03 NA 7.78E+02 NA 3.16E+04 1.31E+03 MW-63-50 3.29E+02 NA 4.35E+02 NA ND 3.50E+02 NA 2.00E+03 3.71E+02 rb Con crete cu MW-42-78 6.13E+02 NA 5.98E+02 NA 6.26E+02 NA 3.97E+02 NA 1.00E+03 5.59E+02 MW-63-93 2.39E+02 NA ND NA ND ND ND NA 2.00E+03 2.39E+02 Catch Basin MW-43-28 1.95E+02 NA ND NA ND NA ND NA 1.00E+03 1.95E+02 MW-63-112 3.01E+02 NA 3.38E+02 NA ND 6.01E+02 8.82E+02 NA 2.00E+03 5.31E+02 W oo d e n MW-43-62 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-63-121 5.20E+02 NA 5.03E+02 NA 5.77E+02 1.33E+03 1.92E+03 NA 2.00E+03 9.70E+02 park ing 120 Grav el MW-44-66 3.10E+02 NA 4.57E+02 NA 6.87E+02 1.62E+03 4.76E+02 NA 1.00E+03 7.10E+02 MW-63-163 4.44E+02 NA 6.05E+02 NA ND 5.08E+02 4.41E+02 NA 2.00E+03 5.00E+02 C

NA rbs ub 3.93E+02 ne cu on MW-44-102 4.47E+02 Sto 1.00E+03 5.95E+02 MW-63-174 2.63E+02 4.13E+02 ND NA 2.00E+03 4.28E+02 Footing Drain NA 6.70E+02 6.38E+02 8.25E+02 NA NA NA ND 6.09E+02 s 120 cr 110 MW-45-42 2.74E+03 NA 8.12E+03 NA 8.56E+03 3.94E+04 NA 2.72E+04 5.90E+03 1.72E+04 MW-65-48 NA NA NA NA NA ND NA NA ** ND Sh et r

MW-45-61 1.51E+03 NA 1.84E+03 NA 2.03E+03 5.63E+03 NA 5.91E+03 2.65E+03 3.38E+03 MW-65-80 NA NA NA NA NA ND NA NA ** ND Localized Transient Releases e

10 MW-46 3.13E+03 NA 2.47E+03 NA 5.25E+03 3.08E+03 3.30E+03 NA 1.84E+03 3.45E+03 MW-66-21 ND NA 4.77E+02 NA ND NA 7.84E+02 NA 1.33E+03 6.31E+02 cu (Surface Spills and Washout) 0 MW-47-56 NA NA NA NA NA 3.52E+03 NA 5.42E+02 ** 2.03E+03 MW-66-36 3.13E+03 NA 3.01E+03 NA 3.52E+03 NA 3.90E+03 NA 7.71E+03 3.39E+03 rb 100 120 MW-47-80 NA NA NA NA NA 1.36E+05 NA 1.37E+05 ** 1.37E+05 MW-67-39 3.56E+03 NA 3.85E+03 NA 3.73E+03 10 0NA 3.62E+03 NA 6.52E+03 3.69E+03

  1. 4# # # Transient Distillate Tank Valve Leak in MW-49-26 2.59E+03 NA 3.17E+03 NA 3.29E+03 NA 3.97E+03 NA 6.52E+03 3.26E+03 MW-67-105 1.14E+03 NA 9.94E+02 NA 1.10E+03 NA 1.42E+03 NA 3.92E+03 1.16E+03 ub 90 s

MW-49-42 2.39E+03 NA 2.45E+03 NA 1.90E+03 NA 3.83E+03 NA 4.97E+03 2.64E+03 MW-67-173 6.25E+02 NA ND NA 5.72E+02 NA 6.13E+02 NA 1.61E+03 6.03E+02 Sh 110 Con crete 110 Unit 1 Fuel Storage Building - 3/07/2009 MW-49-65 1.37E+03 NA 1.94E+03 NA 2.38E+03 NA 2.43E+03 NA 3.03E+03 2.03E+03 MW-67-219 1.15E+03 NA 6.41E+02 NA 1.07E+03 NA 1.11E+03 NA 2.26E+03 9.93E+02 r 110 90 80 MW-50-42 8.67E+02 NA 5.61E+02 NA 3.77E+03 1.03E+03 9.52E+02 NA 1.04E+03 1.44E+03 MW-67-276 1.01E+03 NA 8.75E+02 NA 1.06E+03 NA 8.99E+02 NA 2.01E+03 9.61E+02 0

MW-50-66 3.72E+03 NA 3.76E+03 NA 4.73E+03 6.50E+03 7.15E+03 NA 5.90E+03 5.17E+03 MW-67-323 ND NA ND NA 4.26E+02 NA ND NA 1.00E+03 4.26E+02 11 5

MW-51-40 1.48E+02 NA ND NA ND NA ND NA 1.00E+03 1.48E+02 MW-67-340 5.31E+02 NA ND NA 6.56E+02 NA 4.19E+02 NA 1.01E+03 5.35E+02 90 Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09(initial)

MW-51-79 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-107 NA NA pNA NA ND NA NA NA 1.00E+03 ND m

ra NA MW-51-104 MW-51-135 ND ND NA NA ND ND NA NA ND ND NA NA cu rb s ND ND NA NA 1.00E+03 1.00E+03 ND ND MW-108 MW-109 NA NA NA NA cap i

NA NA NA NA NA 1.24E+03 2.43E+03 A/

NA NA 1.78E+03 3.26E+03 1.51E+03 2.85E+03 G Transient Spill from Temporary R.O. Skid Piping -

NAnd on C NA 6

MW-51-163 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-111 4.59E+04 NA NA NA NA NA 6.15E+04 4.59E+04 Ha co uNA nc ni t MW-51-189 ND ND ND ND 1.00E+03 ND U3-3 6.73E+02 1.03E+03 ** ub 8.52E+02 NA NA NA NA NA NA NA NA NA s MW-52-11 MW-52-18 MW-52-48 MW-52-64 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ND ND ND ND ND ND ND ND NA NA NA NA NA NA NA NA 1.00E+03 1.00E+03 1.00E+03 1.00E+03 ND ND ND ND U3-4D U3-4S U3-T1 U3-T2 7.12E+02 3.51E+02 3.04E+02 1.47E+03 NA NA NA NA 6.28E+02 NA 6.55E+02 2.27E+03 NA NA NA NA 7.41E+02 ND 7.82E+02 3.83E+03 ND ND NA 2.67E+03 pa 6.73E+02 d

re te 4.67E+02 1.00E+03 2.65E+03 NA NA S hNA ru b

NA s 1.00E+03 1.00E+03***

1.00E+03 2.08E+03 Sh r 6.89E+02 4.09E+02 6.85E+02 2.58E+03

^ 7 Entered MW-32 Vault and MH Q4 2009 Sample Sink Overflow - Unit 1 Chemical Systems Building MW-52-122 MW-52-162 MW-52-181 MW-53-82 MW-53-120 NA NA NA 2.59E+03 3.91E+03 NA NA NA NA NA NA NA NA 5.95E+02 3.84E+03 NA NA NA NA NA ND ND ND 6.24E+02 4.11E+03 ND 5.16E+02 ND NA NA NA NA NA 7.16E+02 4.44E+03 NA NA NA NA NA 1.00E+03 1.00E+03 1.00E+03 3.83E+03 1.05E+04 ND 5.16E+02 ND 1.13E+03 4.08E+03 U1-CSS U1-NCD U1-SFDS I-2 LAF-002 2.26E+03 3.34E+03 ND ND NA TransformerNA 4.82E+02 NA NA NA NA NA NA NA NA NA NA NA NA NA 6.38E+03 NA NA NA A/C ND 1.08E+04 NA NA NA NA NA 3.86E+03 2.09E+03 2.34E+02 NA NA NA NA NA NA 5.17E+03 1.00E+03***

positive 6.48E+03 3.60E+03 1.29E+03 2.34E+02 ND Grass Concrete curb X XXX Q2 2011 Probable Legacy Release SSCs Parking lot B-1 2.37E+03 NA 3.82E+03 NA UNIT 8.10E+03 NA 7.36E+02 NA

  • 3.76E+03 Unit 2 Fuel Pool B-6 ND NA 8.39E+02 NA 2.68E+03 5.39E+02 6.45E+02 NA
  • 1.18E+03 MH-5 VCFD 4.60E+02 NA 5.17E+03 NA 1.25E+04 2.97E+03**** 3.9E+03_2.74E+04_2.09E+04 1.4E+04_3.37E+04
  • 1.13E+04 (All identified leaks repaired as of December 2007)

Asphalt 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 As ph Unit 1 West Fuel Pool 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 al groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its t Covered Concrete E16A exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

(All U1-SFPs drained and inactive as of October 2008)

2) A shaded shadedvalue 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. Shrubs E16
3) To be conservative, the 2011 Tritium I.L.s were calculated using (2x the 2009 yearly average) due to an increased Tritium activity observed in multiple Unit 70 Terminated Connection To Storm Drain 2 wells during 2010 in response to the transient surface spill from the temporary, rental RWST/R.O. processing skid. CB-7 Grass 11
4)
  • Indicates storm or foundation drain sampling locations, for which investigation levels are not applicable.

Drain Exfiltration

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

80

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

al

7) **** Four Post-Q2 2011 MH-5 VCFD samples were collected. Their results were: 2.97E+03, 9.86E+03, 2.89E+03 and 1.86E+03. All results are included t Inter-Structure Joint / Mud Mat in the rolling annual average. CB-27 ph Asphalt As Grass Containment Spray Sump Trench Depth-Specific Data CB-5B Transformer Asphalt drive CB-5 CB-5A Substation "H" Asphalt (CB-6) E15A Average activity of H3 (pCi/L x1000) for each screened Interval.

Asphalt Grass 25.21 9.347 CB-6 AB CB-24 E15 11.3 MW-65 1.2 Depth Concrete curb 25.12 Asphalt

? CB-28 0.44 Tank Trans Storage 11.9 42.3 Multiple 15.233 CB-3B Screened Tank ND 24.79 E14 Tank MW-51 33' Tank 42.5' 32.72 Asphalt parking 12.6 56.0 Intervals Screened in Soil 33'X YX YX YX YXYX YXYX YXYX YX YX YX YX YXYX YXYX YXYX YXY ND 42.5' 33' 24.43 ND (U1-CB-8) @

?

UTILITY TUNNEL YX X YX YX YX YXYX YXYX YXYX YXYX YX YX YX

  1. 4 A5 YX X YX YXYX YXYX YXY 7

E1 49.24 0.148 Screened in Bedrock East Fuel Pool 12.8 255.0 YX X YX Y YX YX YXYX YXYX YXYX YXYX YXYX YXYX YXY Trailer ST O RA GE PO O L X 20 1

23.79 ND Tank 40.36 YX X YX 1Groundwater elevation for each screened interval at time of low river tide ND YXYX YXYX YX 9.477 CAS K W AS H &

22.7 A3A YX YX A6 DIS ASS EM B LY CAS K L O AD Y

ISO L AT IO N PI T Y

X 80 PO O L for Q4 2008 (11/11/2008).1 A4 WEST 1 36.03 Asphalt 13

" @ MW-39 ST O RA GE MH16 FUEL ND DIS ASS EM B LY PO O L Containers

?

PO O L Activity Data1,2 POOL F UEL T RAN SF E R PO O L Y X

CB3A FA IL ED F U EL CB4 37.68 PU MP AUX . PO O L SU CTI ON ND WELL U1-SFDS YX YXYX Y

A3 YX X

Bar Graphs; Average H3, pCi/L Tank

    1. Isopleths; Average H3, pCi/L e

iv Dr 3 Concrete curb 45.79 33.9 1.286 WAT ER ND ST O RA GE MW-41 MW-43 33' PO O L Tank Pit Water No Depth-Specific Samples 5,000 - 10,000 CB3 lt

? @

?

As p h a E2B E2C 15.56 MW-42 Tank 29.36 Storage 44.48 ND F5 lt Storage @

? Tank U3-CB Tank DRY 32.15 0.195 4

(U1-CB-9) ha Not Detected (ND) 10,000 - 50,000 Tank sp 12.16 12.86 1.3145 ND A

MH22 D r iv e A/C U nits 34.43

    1. F6 30.71 2.053 31.76 F7 8.986 44.13 A2A ND ND - 1,000 50,000 - 100,000 UNIT 1 0.5585 0.56 11.53 35.07 90 YX X YX YXYX YXYX YXYX YXYX YXYX YXYX YXYX YXYX YXYX YXYX Y CB-29 Unit 2 YX X YX YXYX YXYX YXY 0.7736 MH10 CB-2C 26.96 Condensate 41.21 20.36 Transformers 1,000 - 5,000 U3-MH-14

> 100,000 Storage Tank 9.77 1.073 on raised 2.8 Asphalt Concrete Pad 3.913 39.64 0.8588 MW-45 5,000 - 10,000 Asphalt 9.45 22.37 A

sp 2.03 ha Storage YX X A1 @

? 6.25 U1-NCD Y

MW-31 @

?

lt Note: Illustration of contaminant plume is a schematic MH21 MH9 MH-20 CB-2B YX X

3 As 17.204 Y

21.08 A2 1.446 5 10,000 - 50,000 ph MH11 7.05 ## 137 25.45 representation only. In reality, the geologic bedrock 33X 32.2 Y

I-2 alt

    1. 3.6 Y X ' X Y

@ MW-47 MW-44 G E2 formation is over 99% solid, crystalline rock, with the F3 MW-32 E2A

?

  1. Y X

@6

? # # 22.75' Y

X CB-30 U3-CB @

? 26.68 3.384 50,000 - 100,000

  1. Y X

contaminated water contained only in the remaining (U1-CB-10)

FUEL POOL 65

    1. Y X

? Liquid

^ MW-56 F2 F4 CB Y

X Nitrogen

    1. 33 ' YX X Y (less than 1%) interstitial space (i.e. fractures).

34 MW-30 @ 0.71

    1. YX Y

Tank CB-2A 70 YX  ? A7

@RW-1

    1. X MW-53 100,000 - 200,000 0.234 80 50.75
      1. YX X Y CB-B PAB YX Y

YX 90 @?

? @

?

YX X YX YXYX 0.5946 155 Asphalt YX X YX YXYX YXYX YXYX YXYX YXYX YXYX YXYX Y

21.9 0.464 80 25.16 CSS TRENCH 113.333 Courtyard AL LEY WAY CB-E 11.71 1.131 CB-31

> 200,000 29.05 Transformers 70 Transformers 67.085 260 on raised Concrete slab Condensate F1 Asphalt parking MH18 Concrete Pad 21.51 Tank U1-CB-21 12.36 8.437 U1-CB-22 4.075 H3 data x1,000 pCi/L 60 CB-2 Asphalt B-1 Groundwater Elevation Contours CB-32 21.75' 6.48 MW-34 MH17 CB-1 ROOF DRAIN ELEVATION 65' 70 3 MW-46 MW-35 3.7565 ROOF DRAIN MH8 Transformer area and switch gear UNIT 3 1 1 UNIT 2 MW-33 U1-CSS U1-CB-20

@ Ambient "Watertable" Contours for Q4 2008 (11/11/2008) 43.8'

@ ?

? @

@ ? Trans 43.8' Storage Tanks

?

43.8' 13'  ? 20 TUNNEL Stone retaining wall Gravel B1 43.8' 12.81 3.446 10.68 Contours Other Than 10' Interval 10.6 CSS 50 (EL.=0.0) 10.54 5 MW-40 E3B B2A E3A  %

MH-23 B2 MW-111  % % %

Vadose Zone Contaminant Transport MH7 @

? 6.41 13.428 Ope n gr at e CB-12 E3

?  %

Trans Mach.

54.22 0.206 10.48 45.9 stand 1.897 40 Gravel 5.76 Notes :

52.35 0.163 1. Groundwater contours drawn from Q4 2008 groundwater data to show groundwater conditions used for recalibration of the MH-5 VCFD MH-19 30 3 Transform er yard 4.06 0.8992 30 D1 Precipitation Mass Balance Model (see Q2 2009 LTM Report). These contours developed from limited data recorded on 11.30083 Gravel CB-16 MW-57 46.83 0.248 11/11/2008. Actual elevations may vary from conditions shown and the actual distribution of piezometric heads is likely more B4A complex than indicated.

B3 Vent pit p MH-5 MH23A Trans MW-55 6.97 2.756 @

?

As MH-6 1 Data Notes:

B3A

?

UTILITY 44.32 50 10.27 7.01

1. Average Tritium isopleths and activity values are yearly rolling arithmetic averages of the current and preceeding three ha ND lt Transformer Yard 9.02 1.373 3.29 1.482 MW-108 B5 B4 CB-F

" quarters' data. Only values greater than the MDC are used in this average, thus adding a degree of conservatism to the U2-C1 @ 9.92 43.87 subsequent dose computations.

MW-36 27.7 iv

? CB-13 Conc rete Retainin g Wa ll dr E4 ND 2.314 @

? 2. Illustration of contaminant plume is a schematic representation only. In reality, the geologic bedrock formation is over 99%

8.44 MH-4 MH-4A @

? 8.3 3.13 MW-54 1 e

ND 2.07 40 solid, crystalline rock, with the contaminated water contained only in the remaining (less than 1%) interstitial space (i.e.

? 21.133 9.05 2.27 9.02 1.51 Trans. E4A 40.66 ND " fractures).

6.02 ND 8.82 8.557 B6A

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

MW-37 4. Historically elevated Tritium levels in MW-42-49 observed during Q1 2009 were consistent with leakage visually identified on

? B-6 Asphalt 6.14 8.753 7.19 1.355 03/07/2009 (and terminated immediately thereafter) from the waste distillate tank valves located within the Unit 1 fuel storage MW-52 3 ND building. Data trends through Q1 2010 indicate that the observed Tritium peaks in MW-42-49 and downgrading wells associated

? 1.17575 5.55 5.648 with this release have dissipated through the groundwater flow system.

7.45 5.188 6.46 0.769 1 MW-109 30 5. Historically elevated Tritium levels in MW-45-42 observed during Q2 2009 were consistent with an increased activity observed 5.16 ND 5.64 4.975 CB-17 7.06 1.436 MW-58 ?

? B6 U3-T2 " 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 4.55 Asphalt CB-14 0.8515 U3-T1 2.845 8.94 peaks have been recently detected in MH-A2 from Q3 2010 to Q3 2011. These increases are consistent with elevated Tritium ND 7.88 2.34 5.172 @

?

MW-50 B7 3.76 2.578 6.04 5.333 levels in MW-41-40, MW-46 and B-1. Based on investigations initiated in, and ongoing since, 2009 and the more recent

-1.3 0.516 MW-64 U3-3 @

? 3.69 0.685 E5 1 sampling of the Unit 3 Fuel Storage Building (FSB) roof drains, it has been concluded that these increases in storm drain and

?  ? D2 20 monitoring well Tritium activity are due to condensation of SFP evaporation on the FSB roof (Washout) when the exhaust fan is 7.2 5.818 " not operating, which then enters the roof drains and discharges directly into MH-A2 during rainfall events. As such, Entergy

-1.64 ND Trans.

@ U3-2

? E5A placed the FSB vent fan back in service on 7-21-2011 and the Tritium activity returned to baseline conditions within 2 weeks.

6. Elevated levels of Tritium detected in MH-9 and MH-10a during routine 80-10 Effluents Program sampling on 1/15/2010 60 MH3 Overhead C-1 U3-C1 Crane appears to have originated from a Q4 2009 transient leak in temporary RWST / R.O. skid connection hoses, which flowed into

? 3.81 0.409 MH-9. It also appears that this release entered the well vault for MW-32, and may have penetrated the well casings and entered MW-49 0.689 2.69 E11

? the subsurface around the monitoring installation.

50 Asphalt 0.81 0.474

?

0.47 MW-59 U3-1 @

? @

U3-4D ? @ U3-4S

? 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 1 sampling event appear to have originated from a Q2 2011 sample sink overflow and subsequent floor flooding in a Unit 1 3.255 0.3435 0.49 40

-0.08 B8 50 Transformers 2.52 0.882 Chemical Systems Building 1 sample room on the 53 elevation.

"1 Yard 10 30 (Gravel) CB-34 General Notes: E12 DISCHARGE MH-2 40 0.499 2.643 0.3333 2.04 0.68 -0.13 MW-67 Concrete

" 1 30 1 CB-19

-1.79 ND Bridge CANAL Asphalt parking

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".

"20 0.516 CB-18

? 0.3713 1 Overhea d walkway

-2.03 MH13 MH15 0.47 2.03 -1.24 C Tank 5

C-3 "101 MW-60

-0.02 3.69

?

o B nc ri r d et

" MW-66 MW-63 -0.98 ge e E6 E9 E10 1

-0.91 0.291 0.16 1.164 MW-62 0.239 5 @

? @

? E8

"  ?

0.29 0.6305

? CB-33 0.53367 0.404 0.5305

-1.02 MW-61 0.6033 0.404 MW-48 CB-23 -0.12 -2.26

-0.82 CB-15 C2 MH1

-2.25 0.1 3.39 E7 @

?

0.9928 MH12 -0.15 -0.86 0.97

-0.86 ND -0.48 MH14

-2.59 0.956 -0.84 0.412 -1.54 0.4995 50 25 0 50 100 150 0.961 MW-38

-0.14 -0.15 E13 HR-1 Feet

-1.24 0.4897 -1.19 0.4283

?

-1.93 0.426

? Rip-rap 1.22 GZA GeoEnvironmental, Inc.

0.5238

-1.69 0.5353

-1.56 -0.85

-0.37 0.7585 One Edgewater Drive Norwood, MA 02062 OUTFALL Concrete pier OUT-1 Phone: (781) 278-3700 Fax: (781) 278-5701

-1.85 0.53 No Access this Area

? INDIAN POINT ENERGY CENTER BUCHANAN, NEW YORK HUDSON RIVER Plant North 3rd QUARTER 2011 ROLLING N

AVERAGE TRITIUM ACTIVITY MAP 1

N 09-13-2012 Dwg. Date:

6-Q3 Proj. Mgr.: MJB Figure No.:

Designed By: MJB Reviewed By: MJB Operator: GAS Job No.:

01.0017869.92

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

cu rb s St o n e As p h a lt p a rk in g

As p e

St o r a g Gr ha ass A

lt sp 4th QUARTER 2011 ROLLING AVERAGE TRITIUM ACTIVITY MAP cu ha As p rb h

Con crete cu a lt rb lt cu r 1

As p pa b Gr ha rk s in Grass g G ra v el As p as lt e

p pa dr As ha rk iv Gravel parking lt ha in s

lt cu g Asp halt parking rb l

pa ph MW-112 G ra v e rb As p

rb As lt As p h a cu rk Con crete cu Asp ha lt cu Fuel Oil Fuel Oil in rb ha a lt g

? Storage Tank Storage Tank e

on lt St pa cu e

St o r a g rb rk i Grass lt ass ng ha Gr Asp ha lt cu As Tritium Results (pCi/L) Tritium Results (pCi/L) rb p Post Post Rolling Post Quarter Post Quarter Rolling Well ID Quarter 1 Post Quarter 1 Quarter 2 Post Quarter 2 Quarter 3 Quarter 4 Investigation Well ID Quarter 1 Post Quarter 1 Quarter 2 Quarter 3 Post Quarter 3 Quarter 4 Investigation Quarter 3 Quarter 4 Annual 2 4 Annual Level Level 2011 2011 2011 2011 2011 2011 2011 2011 Average 2011 2011 2011 2011 2011 2011 2011 2011 Average MW-30-69 1.01E+05 1.08E+05 1.13E+05 1.19E+05 1.14E+05 NA 9.12E+04 NA 2.14E+05 1.08E+05 MW-54-37 1.33E+03 NA 5.16E+03 2.79E+04 3.13E+04 NA 1.40E+04 NA 2.71E+03 1.59E+04 5.46E+04 MW-30-84 9.20E+03 9.04E+03 7.57E+03 7.55E+03 7.06E+03 NA 7.24E+03 NA 1.22E+04 7.94E+03 MW-54-58 9.58E+02 NA 9.94E+02 2.48E+03 4.23E+03 NA 4.83E+03 NA 1.48E+03 2.70E+03 As p h a lt cu rb in g rkin g MW-31-49 1.06E+03 4.31E+03 1.08E+03 4.98E+03 1.54E+04 4.28E+04 5.37E+03 MW-54-123 1.08E+03 1.30E+03 1.52E+03 10 Grav el pa rk NA NA NA NA 8.24E+02 5.70E+02 1.21E+03 NA 3.92E+03 NA G ra vel p a MW-31-63 2.46E+04 1.33E+04 1.81E+04 NA 1.63E+04 NA 7.23E+03 NA 3.99E+04 1.59E+04 MW-54-144 1.35E+03 NA 1.48E+03 4.34E+03 5.27E+03 NA 6.85E+03 NA 2.64E+03 3.86E+03 0

MW-31-85 4.83E+03 7.75E+02 3.08E+03 NA 4.82E+03 NA 5.49E+03 NA 1.46E+04 3.80E+03 MW-54-173 1.66E+03 NA 1.26E+03 1.48E+03 1.50E+03 NA 2.32E+03 NA 3.63E+03 1.64E+03 ,

MW-32-48 NA NA NA NA NA NA NA NA 5.83E+04*** NA MW-54-190 1.89E+03 NA 2.07E+03 2.37E+03 3.31E+03 NA 8.77E+03 NA 3.49E+03 3.68E+03 MW-32-59 4.39E+03 3.37E+04 3.31E+03 NA 2.06E+04 NA 2.91E+04 NA 3.42E+04 1.82E+04 MW-55-24 1.02E+03 NA NA NA 1.71E+03 NA 2.57E+03 NA 2.58E+03 1.77E+03 ,

130 MW-32-85 1.34E+04 1.32E+04 1.14E+04 NA 1.14E+04 NA 8.88E+03 NA 1.63E+04 1.17E+04 MW-55-35 1.70E+03 NA NA NA 2.94E+03 NA 2.79E+03 NA 4.38E+03 2.48E+03 MW-32-149 1.06E+03 8.99E+02 8.69E+02 NA 9.86E+02 NA 5.91E+02 NA 1.00E+03 8.81E+02 MW-55-54 8.46E+03 NA NA NA 8.53E+03 NA 5.97E+03 NA 1.28E+04 7.65E+03 MW-32-173 9.02E+02 8.41E+02 5.82E+02 5.69E+02 5.06E+02 1.50E+03 6.80E+02 MW-56-53 ND ND NA 1.19E+03 ND MW-107 MW-101 1,015' 140 NA NA NA NA NA ND NA ND MW-32-190 1.64E+03 1.41E+03 1.21E+03 NA 1.44E+03 NA 1.46E+03 NA 4.21E+03 1.43E+03 MW-56-83 NA NA 7.64E+04 8.42E+04 NA 1.05E+05 7.25E+04 NA 6.39E+03 8.45E+04 Earth @

? @

? 640' MW-105 rk in g MW-33 NA NA NA NA NA NA NA NA 6.88E+04 NA MW-57-11 NA NA 6.40E+03 7.36E+03 NA 7.27E+03 NA NA 8.44E+03 7.01E+03 Parking 140 As ph alt pa MW-35 NA NA NA NA NA NA NA NA 2.92E+03 NA MW-57-20 NA NA 2.03E+04 3.81E+04 NA 2.47E+04 NA NA 3.04E+03 2.77E+04 MW-36-24 ND NA 3.07E+03 NA 1.12E+03 NA ND NA 2.56E+03 2.10E+03 MW-57-45 NA NA 1.35E+04 2.53E+04 NA 2.46E+04 NA NA 2.38E+03 2.11E+04 115.76 ND @

?

140 MW-36-41 8.74E+03 NA 8.17E+03 NA 5.90E+03 NA 2.63E+03 NA 2.10E+04 6.36E+03 MW-58-26 NA NA 7.22E+02 1.86E+03 NA 2.47E+03 4.77E+03 NA 1.00E+03 2.46E+03 MW-36-52 3.14E+03 NA 5.84E+03 NA 4.69E+03 NA 4.76E+03 NA 1.48E+04 4.61E+03 MW-58-65 NA NA ND 7.26E+02 NA 1.10E+03 1.75E+03 NA 1.00E+03 1.19E+03 a rk in g MW-37-22 6.74E+03 NA 6.87E+03 NA 4.52E+03 NA 4.97E+03 NA 9.19E+03 5.78E+03 MW-59-32 NA NA NA ND NA 4.74E+02 NA NA ** 4.74E+02 MW-37-32 4.57E+03 NA 4.11E+03 NA 5.23E+03 NA 4.33E+03 NA 9.32E+03 4.56E+03 MW-59-45 NA NA NA 5.24E+02 NA 1.24E+03 NA NA ** 8.82E+02 Asp h a lt p Storage LEGEND MW-37-40 5.97E+03 NA 3.92E+03 NA 5.03E+03 NA 5.22E+03 NA 9.02E+03 5.04E+03 MW-59-68 NA NA NA ND NA ND NA NA ** ND Gravel rk in g Stora ge units storage MW-37-57 5.63E+03 9.62E+03 5.36E+03 MW-60-35 2.00E+03 4.99E+02 As ph alt pa NA 5.81E+03 NA 5.11E+03 NA 4.87E+03 NA NA NA ND NA 4.99E+02 NA ND NA Grass rkin g MW-39-67 NA NA 1.09E+04 2.24E+03 NA 1.49E+04 1.03E+03 NA 1.00E+03 7.27E+03 MW-60-53 NA NA ND NA 5.16E+02 NA ND NA 2.00E+03 5.16E+02 G ra vel p a MW-39-84 NA NA 4.40E+02 ND NA ND ND NA 1.00E+03 4.40E+02 MW-60-72 NA NA ND NA 2.91E+02 NA ND NA 2.00E+03 2.91E+02 Gravel Boring / Monitoring Installation Designation MW-39-102 NA NA 1.43E+04 1.24E+04 NA 1.90E+04 1.12E+03 NA 1.00E+03 1.17E+04 MW-60-135 3.98E+02 NA 4.14E+02 NA 4.00E+02 NA ND NA 2.00E+03 4.04E+02 No Access MW-39-124 NA NA ND ND NA ND ND NA 1.00E+03 ND MW-60-154 5.44E+02 NA ND NA 5.89E+02 NA 6.27E+02 NA 2.00E+03 5.87E+02 MW-30 Longterm Radionuclide Monitoring Installation MW-39-183 NA NA ND ND NA ND ND NA 1.00E+03 ND MW-60-176 1.12E+03 NA 8.99E+02 NA 9.72E+02 NA 1.30E+03 NA 2.00E+03 1.07E+03 MW-39-195 NA NA 7.04E+03 4.19E+03 NA 1.72E+04 5.13E+03 NA 1.00E+03 8.39E+03 MW-62-18 ND NA ND ND 4.04E+02 NA 6.50E+02 NA 2.00E+03 5.27E+02 MW-40-27 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-37 ND NA ND ND ND NA 3.74E+02 NA 2.00E+03 3.74E+02 MW-110

?

Standby Radionuclide Monitoring Installation Asphalt MW-40-46 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-53 ND NA ND ND 4.12E+02 NA 4.82E+02 NA 2.00E+03 4.47E+02

?

e Asp ha lt driv MW-40-81 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-71 5.38E+02 NA ND ND 5.14E+02 NA 4.68E+02 NA 2.00E+03 5.07E+02 MW-40-100 MW-40-127 ND ND NA NA ND ND ND ND NA NA NA NA ND ND NA NA 1.00E+03 1.00E+03 ND ND MW-62-92 MW-62-138 5.09E+02 5.17E+02 NA NA 5.06E+02 6.31E+02 5.61E+02 4.66E+02 5.61E+02 1.42E+03 NA NA 5.51E+02 3.01E+03 NA NA 2.00E+03 2.00E+03 5.38E+02 1.21E+03

?

Active Storm Drain MW-40-162 ND NA ND ND NA NA ND NA 1.00E+03 ND MW-62-182 ND NA ND ND 5.84E+02 NA 6.88E+02 NA 2.00E+03 6.36E+02 rb 3.61E+02 MW-41-40 2.03E+03 NA 4.51E+03 6.99E+02 5.94E+02 NA 6.16E+02 NA 1.00E+03 1.69E+03 MW-63-18 4.90E+02 NA ND ND ND NA 2.59E+02 NA 2.00E+03 3.75E+02 cu 3.50E+02 Abandoned Storm Drain MW-41-63 1.23E+03 NA 7.58E+02 7.14E+02 6.60E+02 NA 6.41E+02 NA 1.00E+03 8.01E+02 MW-63-34 2.98E+02 NA ND ND NA 4.30E+02 NA 2.00E+03 3.63E+02 MW-42-49 1.49E+03 NA 1.71E+03 NA 7.78E+02 NA 1.40E+03 NA 3.16E+04 1.34E+03 MW-63-50 4.35E+02 NA ND ND NA ND NA 2.00E+03 3.93E+02 rb Con crete cu MW-42-78 5.98E+02 NA 6.26E+02 NA 3.97E+02 NA ND NA 1.00E+03 5.40E+02 MW-63-93 ND NA ND ND ND NA 5.04E+02 NA 2.00E+03 5.04E+02 Catch Basin MW-43-28 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-63-112 3.38E+02 NA ND 6.01E+02 8.82E+02 NA 1.34E+03 NA 2.00E+03 7.90E+02 W oo d e n MW-43-62 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-63-121 5.03E+02 NA 5.77E+02 1.33E+03 1.92E+03 NA 3.63E+03 NA 2.00E+03 1.59E+03 park ing 120 Grav el MW-44-66 4.57E+02 NA 6.87E+02 1.62E+03 4.76E+02 NA ND NA 1.00E+03 8.10E+02 MW-63-163 6.05E+02 NA ND 5.08E+02 4.41E+02 NA 4.85E+02 NA 2.00E+03 5.10E+02 C

cu rbs ub MW-44-102 3.93E+02 6.70E+02 ne 6.38E+02 Sto 1.00E+03 7.15E+02 MW-63-174 4.13E+02 ND NA NA 2.00E+03 4.92E+02 on Footing Drain NA 8.25E+02 NA 1.05E+03 NA NA ND 6.09E+02 4.53E+02 s 120 cr 110 MW-45-42 8.12E+03 NA 8.56E+03 3.94E+04 NA 2.72E+04 1.65E+03 NA 5.90E+03 1.70E+04 MW-65-48 NA NA NA ND NA NA NA NA ** ND Sh et r

MW-45-61 1.84E+03 NA 2.03E+03 5.63E+03 NA 5.91E+03 2.06E+03 NA 2.65E+03 3.49E+03 MW-65-80 NA NA NA ND NA NA NA NA ** ND Localized Transient Releases e

10 MW-46 2.47E+03 NA 5.25E+03 3.08E+03 3.30E+03 NA 2.28E+03 NA 1.84E+03 3.28E+03 MW-66-21 4.77E+02 NA ND NA 7.84E+02 NA ND NA 1.33E+03 6.31E+02 cu (Surface Spills and Washout) 0 MW-47-56 NA NA NA 3.52E+03 NA 5.42E+02 5.31E+03 NA ** 3.12E+03 MW-66-36 3.01E+03 NA 3.52E+03 NA 3.90E+03 NA 3.34E+03 NA 7.71E+03 3.44E+03 rb 100 120 MW-47-80 NA NA NA 1.36E+05 NA 1.37E+05 9.68E+04 NA ** 1.23E+05 MW-67-39 3.85E+03 NA 3.73E+03 NA 3.62E+03 10 0 NA 3.51E+03 NA 6.52E+03 3.68E+03

  1. 4# # # Transient Distillate Tank Valve Leak in MW-49-26 3.17E+03 NA 3.29E+03 NA 3.97E+03 NA 4.92E+03 NA 6.52E+03 3.84E+03 MW-67-105 9.94E+02 NA 1.10E+03 NA 1.42E+03 NA 1.89E+03 NA 3.92E+03 1.35E+03 ub 90 s

MW-49-42 2.45E+03 NA 1.90E+03 NA 3.83E+03 NA 4.91E+03 NA 4.97E+03 3.27E+03 MW-67-173 ND NA 5.72E+02 NA 6.13E+02 NA 5.88E+02 NA 1.61E+03 5.91E+02 Sh 110 Con crete 110 Unit 1 Fuel Storage Building - 3/07/2009 MW-49-65 1.94E+03 NA 2.38E+03 NA 2.43E+03 NA 4.24E+03 NA 3.03E+03 2.75E+03 MW-67-219 6.41E+02 NA 1.07E+03 NA 1.11E+03 NA 1.20E+03 NA 2.26E+03 1.01E+03 r 110 90 80 MW-50-42 5.61E+02 NA 3.77E+03 1.03E+03 9.52E+02 NA 9.99E+02 NA 1.04E+03 1.46E+03 MW-67-276 8.75E+02 NA 1.06E+03 NA 8.99E+02 NA 1.06E+03 NA 2.01E+03 9.74E+02 0

MW-50-66 3.76E+03 NA 4.73E+03 6.50E+03 7.15E+03 NA 7.83E+03 NA 5.90E+03 5.99E+03 MW-67-323 ND NA 4.26E+02 NA ND NA ND NA 1.00E+03 4.26E+02 11 5

MW-51-40 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-67-340 ND NA 6.56E+02 NA 4.19E+02 NA 5.62E+02 NA 1.01E+03 5.46E+02 90 Unit 3 SFP Evap. Washout to MH-A2 - 3/25/09(initial)

MW-51-79 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-107 NA NA pND NA NA NA NA NA 1.00E+03 ND m

ra NA MW-51-104 MW-51-135 ND ND NA NA ND ND NA NA ND ND NA NA cu rb s ND ND NA NA 1.00E+03 1.00E+03 ND ND MW-108 MW-109 NA NA NA NA ic ap NA 1.24E+03 2.43E+03 NA NA 1.78E+03 3.26E+03 A/

NA NA NA NA 1.51E+03 2.85E+03 G Transient Spill from Temporary R.O. Skid Piping -

NAnd oNA n C 6

MW-51-163 ND NA ND NA ND NA ND NA 1.00E+03 ND MW-111 NA NA NA NA 1.11E+04 NA 6.15E+04 1.11E+04 Ha c u MW-51-189 ND NA ND NA ND NA ND NA 1.00E+03 ND U3-3 NA NA NA 6.73E+02 NA 1.03E+03o n ni t NA NA ** ub s 8.52E+02 c

MW-52-11 MW-52-18 MW-52-48 MW-52-64 NA NA NA NA NA NA NA NA ND ND ND ND ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 1.00E+03 1.00E+03 1.00E+03 1.00E+03 ND ND ND ND U3-4D U3-4S U3-T1 U3-T2 6.28E+02 NA 6.55E+02 2.27E+03 NA NA NA NA 7.41E+02 ND 7.82E+02 3.83E+03 ND ND NA 2.67E+03 6.73E+02 4.67E+02 1.00E+03 2.65E+03 NA pad r et NA NA NA e

ND 7.52E+02 7.69E+02 2.98E+03 Sh NA NA r u NA bs NA 1.00E+03 1.00E+03***

1.00E+03 2.08E+03 Sh r 6.81E+02 6.10E+02 8.02E+02 2.88E+03

^ 7 Entered MW-32 Vault and MH Q4 2009 Sample Sink Overflow - Unit 1 Chemical Systems Building MW-52-122 MW-52-162 MW-52-181 MW-53-82 MW-53-120 NA NA NA 5.95E+02 3.84E+03 NA NA NA NA NA ND ND ND 6.24E+02 4.11E+03 ND 5.16E+02 ND NA NA NA NA NA 7.16E+02 4.44E+03 NA NA NA NA NA NA NA ND 8.02E+03 NA NA NA NA NA NA 1.00E+03 1.00E+03 1.00E+03 3.83E+03 1.05E+04 ND 5.16E+02 ND 6.45E+02 5.10E+03 U1-CSS U1-NCD U1-SFDS I-2 LAF-002 NA NA NA NA NA NA TransformerNA NA 6.38E+03 NA NA NA NA NA ND 1.08E+04 NA NA NA NA NA 3.86E+03 2.09E+03 2.34E+02 A/CNA NA NA NA NA NA 1.70E+03 1.13E+04_2.32E+03 2.02E+03_ND ND ND NA NA NA NA NA 5.17E+03 1.00E+03***

positive 6.29E+03 5.83E+03 2.06E+03 2.34E+02 ND Grass Concrete curb X XXX Q2 2011 Probable Legacy Release SSCs Parking lot B-1 3.82E+03 NA 8.10E+03 NA UNIT 7.36E+02 NA NA NA

  • 4.22E+03 Unit 2 Fuel Pool B-6 8.39E+02 NA 2.68E+03 5.39E+02 6.45E+02 NA ND NA
  • 1.18E+03 MH-5 VCFD 5.17E+03 NA 1.25E+04 2.97E+03**** 3.9E+03_2.74E+04_2.09E+04 1.4E+04_3.37E+04 1.48E+04_2.40E+04 NA
  • 1.34E+04 (All identified leaks repaired as of December 2007)

Asphalt 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 As ph Unit 1 West Fuel Pool 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 al groundwater sampling results where the radionuclide activity level is either positive but very low and unquantifiable, or not detectable above background, its t Covered Concrete E16A exclusion results in a high bias to the average and thus adds a measure of conservatism to the subsequent dose computations.

(All U1-SFPs drained and inactive as of October 2008)

2) A shaded shadedvalue 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. Shrubs E16
3) To be conservative, the 2011 Tritium I.L.s were calculated using (2x the 2009 yearly average) due to an increased Tritium activity observed in multiple Unit 70 Terminated Connection To Storm Drain 2 wells during 2010 in response to the transient surface spill from the temporary, rental RWST/R.O. processing skid. CB-7 Grass 11
4)
  • Indicates storm or foundation drain sampling locations, for which investigation levels are not applicable.

Drain Exfiltration

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

80

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

al

7) **** Four Post-Q2 2011 MH-5 VCFD samples were collected. Their results were: 2.97E+03, 9.86E+03, 2.89E+03 and 1.86E+03. All results are included t Inter-Structure Joint / Mud Mat in the rolling annual average. CB-27 ph Asphalt As Grass Containment Spray Sump Trench Depth-Specific Data CB-5B Transformer Asphalt drive CB-5 CB-5A Substation "H" Asphalt (CB-6) E15A Average activity of H3 (pCi/L x1000) for each screened Interval.

Asphalt Grass 25.21 7.268 CB-6 AB CB-24 E15 11.3 MW-65 1.2 Depth Concrete curb 25.12 Asphalt

? CB-28 0.44 Tank Trans Storage 11.9 42.3 Multiple 11.705 CB-3B Screened Tank ND 24.79 E14 Tank MW-51 33' Tank 42.5' 32.72 Asphalt parking 12.6 56.0 Intervals Screened in Soil 33'X YX YX YX YXYX YXYX YXYX YX YX YX YX YXYX YXYX YXYX YXY ND 42.5' 33' 24.43 ND (U1-CB-8) @

?

UTILITY TUNNEL YX X YX YX YX YXYX YXYX YXYX YXYX YX YX YX

  1. 4 A5 YX X YX YXYX YXYX YXY E1 49.24 7

Screened in Bedrock 12.8 255.0 ND East Fuel Pool YX X YX Y YX YX YXYX YXYX YXYX YXYX YXYX YXYX YXY Trailer ST O RA GE PO O L X 20 1

23.79 ND Tank 40.36 YX X YX 1Groundwater elevation for each screened interval at time of low river tide ND YXYX YXYX YX CAS K W AS H &

22.7 A3A YX YX A6 DIS ASS EM B LY 8.39 CAS K L O AD Y

ISO L AT IO N PI T Y

X 80 PO O L for Q4 2008 (11/11/2008).1 A4 WEST 1 36.03 Asphalt 13

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