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Yankee Atomic Electric Company, Figures from Final Groundwater Condition Report for the Yankee Nuclear Power Station
	ML071510141
Person / Time
Site:	Yankee Rowe
Issue date:	01/13/2007
From:	Gerard van Noordennen; Yankee Atomic Electric Co
To:	; Document Control Desk, NRC/FSME
References
	Download: ML071510141 (43)
	v • d • e

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50 500 1,000 1,500 270,000 272,000 274,000 276,000 Yankee Nuclear Model Layers 5, 6, 7, & 8 Property Zones for Specific Storage and Specific Yield Final Groundwater Power Station Condition Report Rowe, MA Figure 6-21

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Yankee Nuclear Model Layer 9 Property Zones for Specific Storage and Specific Yield Final Groundwater Power Station Condition Report Rowe, MA No color indicates the default Zone 2 1/13/07 Figure 6-22

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Power Station Condition Report Rowe, MA No color indicates the default Zone 4 1/13/07 Figure 6-25

Figure 6-26 Cumulative Precipitation at Rowe, MA 120 100 0

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Figure 6-27 Observed vs. Computed Average Annual Head Values 1130 U

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0 999 9

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Figure 6-28 Observed vs. Residuals 15 V

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Figure 6-29 Observed vs. Computed Values for Vertical Gradients 60 40 W

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n 271,300 271,500 271,700 271,900 272,100 272,300 272,500 272,700 272,900 273,100 273,300 273,500 273,700 Yankee Nuclear Model Residuals for Verification Calibration Data Set Final Groundwater Power Station Condition Report Rowe, MA Negative residuals indicate model over-predicted the elevation 1/15/07 Figure 6-30

Figure 6-31 Model Parameter Sensitivity Analyses Sensitivity Analysis for Kxy Zone 3 Sensitivity Analysis for Kxy Zone 1 S

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Figure 6-31 Model Parameter Sensitivity Analyses Sensitivity Analysis for Kxy Zone 10 Sensitivity Analysis for Kxy Zone 14 j

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Figure 6-31 Model Parameter Sensitivity Analyses Sensitivity Analysis for Kz Zone 10 Sensitivity Analysis for Kz Zone 9 1,630.8 1,621.7 1,612.7 1,603.7 1,5947 a,

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_______ 1 0.10 0.:30 1.00 300 Parameter Multiplier 10.00 Yankee Nuclear Power Station Page 3 of 3, 2/1/2007 Final Groundwater Condition Report

Figure 6-32 Comparison of MW-107C Pumping Test Measured v. Simulated Drawdowns 101B 101C 1,109.8 1,109.1 1,108,5 1,107.9 1,107.2 1,106.6 1,108.6 1,105.3 1,101.9 1,098.5 1,095.2 Observed Computed

-- 0,- Observed Computed 0.0 0.6 1.2 1.7 2.3 Time 0.0 0.6 1.2 1.7 2.3 Time 102A 1028 1,115.5 1,114.9 S1114.3 1,113.6 1,113.0 1,112.4 1,105.3 1,104.9 1,104.6 1,104.3 1,103.9 1,103.6

-- w-Observed Computed Observed Computed 0.0 0.6 1.2 1.7 2.3 Time 0.0 0.6 1.2 1.7 2.3 Time 102C 107B 1,105.7 1,103,2 1,100.6 1,098.1 1,095.6 1,093.1 1,107.8 1,107.2 1,106.7 1,106.1 1,105.6 1,105.0 Observed Computed Observed Computed 0.0 0.6 1.2 1.7 2.3 Time 0.0 0.6 1.2 1.7 2.3 Time Yankee Nuclear Power Plant Page 1 of 3 Final Groundwater Condition Report

Figure 6-32 Comparison of MW-107C Pumping Test Measured v. Simulated Drawdowns 107C 107D 1,117.2 1.114.7 1,112.3 1,109.8 1,107.4 1,104.9 1,108.6 1,106.3 1,104.1 1,101.9 1,099.7 1,097.4

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-Computed Observed Computed 0.0 0.6 1.2 1.7 2.3 Time 0.0 0.6 1.2 1.7 2.3 Time 107E 107F 1,113.8 1,113.1 1,112.3 1,111.5 1,110.7 1,113.8 1,113.0 1,112.2 1,111.4 1.110.6

-- §-- Observed Computed

--4-, Observed Computed 0.0 0.6 1.2 1.7 2.3 Time 0.0 0.6 1.2 1.7 2.3 Time 110B 110C 1,113.8 1,112.1 1,110.5 1,108.8 1,107.2 1,105.6 1,119.5 1,119.0 I 1,118.5 1,118.0 1,117.5 1,117.0

-- M4-Observed Computed

-- D-- Observed Computed 0.0 0.6 1.2 1.7 2.3 Time 0.0 0.6 1.2 1.7 2.3 Time Yankee Nuclear Power Plant Page 2 of 3 Final Groundwater Condition Report

Figure 6-32 Comparison of MW-107C Pumping Test Measured v. Simulated Drawdowns 110D 1,112.2 1,109.0 1,105.7 1,102.5 1,099.3 1,096.1

-. e*- Observed Computed 0.0 0.6 1.2 1.7 2.3 Time 111B 1,111.5 1,110.7 1,109.9 1,109.0 1,108.2 Observed Computed 0.0 0.6 1.2 Time 1.7 2.3 111C 1,121.1 1,119.6 1,118.0 1,116.5 1,115.0 Observed Computed 0.0 0.6 1.2 Time 1.7 2.3 Yankee Nuclear Power Plant Page 3 of 3 Final Groundwater Condition Report

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75 150 300 450 600 272,300 272,500 272,700 272,900 273,100 273,300 Final Groundwater Yankee Nuclear Phreatic Surface Groundwater Contours during Plant Operation ConditiondRer Powe StaionCondition Report Power Station Rowe, MAFiue63 Groundwater Elevations referenced to NAVD88 1/13/07 Fgue63

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75 150 300 450 600 273,100 273,300 Final Groundwater Yankee Nuclear Model Layer 3 Groundwater Contours during Plant Operation ConditiondRer Power Station Condition Report Rowe, MA Figure 6-34 Groundwater Elevations referenced to NAVD88 1/13/07 Fire-4

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5 Layer 5 Heads telt 0

75 150 300 450 600 273,100 273,300 Final Groundwater Yankee Nuclear Model Layer 5 Groundwater Contours during Plant Operation ConditiondRer Powe StaionCondition Report Power Station Rowe, MAFiue65 Groundwater Elevations referenced to NAVD88 1/13/07 Fgue63

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I I

I 270,900 271,100 271,300 271,500 Final Groundwater Yankee Nuclear Model Layer 10 Groundwater Contours during Plant Operation ConditiondRer Powe StaionCondition Report Power Station Rowe, MA Figure 6-37 Groundwater Elevations referenced to NAVD88 1/13/07

I Legend Layer 12 Mon Wells A

12 Layer 12 Heads K

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75 150 300 450 600 I

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I 271,100 271,300 271,500 271,700 271,900 272,100 272,300 272,500 273,100 Final Groundwater Yankee Nuclear Model Layer 12 Groundwater Contours durng Plant Operation ConditiondRer Powe StaionCondition Report Power Station Rowe, MAFiue63 Groundwater Elevations referenced to NAVD88 1/13/07 Fiue63

Q f

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75 150 300 450 600 272,500 272,700 272,900 273,100 273,300 Yankee Nuclear Model Layer 14 Groundwater Contours durng Plant Operation Final Groundwater Power Station Condition Report Rowe, MA Figure 6-39 Groundwater Elevations referenced to NAVD88 1/13/07 Fgue63

262,000 264,000 266,000 268,000 1

1 270,000 272,000 27 00 276,000 278,000 280,000 Q

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) 1,0002,000 4,000 6,000 8,0 Feet

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I 262,000 264,000 266,000 268,000 270,000 272,000 274,000 276,000 I

I 278,000 280,000 Yankee Nuclear Model Layer 15 Groundwater Contours during Plant Operation Final Groundwater Power Station Condition Report Rowe, MA Figure 6-40 Groundwater Elevations referenced to NAVD88 1/13/07 Fgre-4

272,300 Ca aI 0) 271,900 272,100 Yankee Nuclear Layer 1 Hydraulic Conductivity Distribution in Post-Demo State Final Groundwater Power Station The significant changes from Figure 6-6 are in the extension of the Sherman Dam Condition Report Rowe, MA crest ? Zone 2? to the east and the addition of thick till-like soils ? Zone 5?

Figure 6-41 to backfill excavations 1/14/07

271.

C2 0

C Ct Mre 273,100 273,300 273,500 Yankee Nuclear Layer 2 Hydraulic Conductivity Distribution in Post-Demo State Final Groundwater Power Station Condition Report Rowe, MA Figure 6-42

Simulated Change in Groundwater Elevation, Model Layer 2 Final Groundwater Yankee Nucler In Post-Demo State, Average Annual Steady-state Recharge Condition Report Power Station Rowe, MA Negative Groundwater Drawdown Means a Rise in Elevation Figure 6-43 Compared with Pre-Demo State 1/13/07

Phreatic Surface Contours in Post-Demo State, Average Annual Recharge, Final Groundwater Yankee Nucler and Particle Track from Top Model Layer at MW-107 Condition Report Power Station Rowe, MA Groundwater Contours referenced to NAVD88, Feet Figure 6-43A Particle Tracks are color-coded to indicate the model layer of travel 2/1/07

ctC'I Legend Mon Wells Layer

1

]i l

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SReverse Particle Track Phreatic Heads 0

50 100 200 271,100 271,300 271,500 Yankee Nuclear Reverse Particle Track from Sherman Spring for 760 day Travel Time Final Groundwater Power Station Condition Report Rowe, MA Figure 6-44 Groundwater Elevations referenced to NAVD88 1/13/07 Fgue64

06 0

U E

T-Figure 6-45 Comparison of Measured vs. Simulated Tritium Concentrations in Sherman Spring 100,000,000 10,000,000 1,0i00-Model Simulated 1,000,000 Measured 100,000 10,000 1,000 100 0

2 4

6 8

10 12 Years since December 1965 14 16 18 20 Yankee Nuclear Power Station Rowe, MA Final Groundwater Condition Report 2/1/2007

Legend Tritium Isocon 1985 Tritium Isocon 2005

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0 100200 400 600

'<--' S I

I I

I 1

I 270,200 270,400 270,600 270,800 271,000 271,200 271,400 271,600 271,800 272,000 272,200 272,400 272,600 272,800 273,000 273,200 273,400 273,600 Yankee Nuclear Model-simulated Tritium Distribution in Layer 1 from IXP Leak in 1963 Final Groundwater Power Station Condition Report Rowe, MA Tritium Concentration in pCi/L 1/15/07 Figure 6-46

Tritium Isocon Tritium Isocon

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2 to I

I I

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Legend Tritium Isocon 1985 Tritium Isocon 2005 0 100200 400 600 800

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270,200 270,400 270,600 270,800 271,000 271,200 271,400 271,600 271,800 272,000 272,200 272,400 272,600 272,800 273,000 273,200 273,400 273,600 Yankee Nuclear Model-simulated Tritium Distribution in Layer 7 from 1963 IXP Leak Final Groundwater Power Station Condition Report Rowe, MA Tritium Concentration in pCi/L 1/15/07 Figure 6-48

270,200 270,400 270,600 270,800 271,000 271,200 271,400 271,600 271,800 272,000 272,200 272,400 272,600 272,800 273,000 273,200 273,400 273,600 I

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Figure 6-51 Concentration of Tritium in MW-107C 2006-2008 45000 40000 35000 30000 25000 E

20000 15000 10000 5000 0 !

1/1/2006 5/1/2006 8/29/2006 12/27/2006 4/26/2007 8/24/2007 12/22/2007 4/20/2008 8/18/2008 Date Yankee Nuclear Power Station Rowe, MA Final Groundwater Condition Report 2/8/2007

Figure 6-52 Tritium Cone. vs-. 7Tme at Resident Farmer Well at AMW-f 07C location 6C E

-z I-40,000 35,000 30,000 25,000 20,000 15,000 10,000 5,000 0

0 60 120 180 240 300 360 420 480 540 600 660 720 780 840 900 960 102010801 1401200 Time in days since April 26, 2006

-Layer 2

Layer 3 Layer 4 Layer 5 Note: Well is Turned on at 360 days and runs continuously at 128 ft3/day thereafter.

Yankee Nuclear 1/16/2007 Power Station Final Groundwater Condition Report

ML071510141

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