ML12157A222

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GGNS Well Summary Table RAI Response Dated May 23, 2012
ML12157A222
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 05/23/2012
From:
Entergy Operations
To:
Office of Nuclear Reactor Regulation
References
GNRO-2012/00039
Download: ML12157A222 (4)
v • d • e


Text

Grand Gulf Nuclear Station Well Construction Summary 1 Well ID Installation Type Date Installed Formation Groundwater Unit of Screened Interval Northing (MS State Plane West NAD83)

Easting (MS State Plane West NAD83)

Approx.

Surface Completion Elevation (ft NAVD88)

Approx.

Top of Screened Interval (ft NAVD1988)

Approx.

Base of Screened Interval (ft NAVD1988)

Casing Diameter (inches)

Casing Material Wells Screened in Loess MW-1007A Monitoring Well 2006 3 Loess Perched 913345.7 2073940.8 133.26 83.26 68.86 2

PVC MW-1016A Monitoring Well 2006 3 Loess Perched 913915.7 2073923.8 158.10 90.47 81.07 2

PVC MW-1019A Monitoring Well 2006 3 Loess Perched 913975.7 2074117.8 133.73 92.03 82.63 2

PVC MW-1023A Monitoring Well 2006 3 Loess Perched 913868.7 2073439.8 157.63 90.23 80.83 2

PVC MW-1024A Monitoring Well 2006 3 Loess Perched 914465.7 2073735.8 158.16 105.78 86.38 2

PVC MW-1025A Monitoring Well 2006 3 Loess Perched 914385.7 2074413.8 147.77 92.51 78.11 2

PVC MW-1026A Monitoring Well 2006 3 Loess Perched 913967.7 2074694.8 131.62 101.56 92.16 2

PVC MW-1027A Monitoring Well 2006 3 Loess Perched 913129.6 2074227.8 133.08 98.21 83.81 2

PVC MW-1033A Monitoring Well 2006 3 Loess Perched 911999.6 2072947.8 158.18 100.35 85.95 2

PVC MW-1040A Monitoring Well 2006 3 Loess Perched 912992.6 2072830.8 161.30 89.13 79.73 2

PVC MW-1043A Monitoring Well 2006 3 Loess Perched 913444.7 2073197.8 121.39 91.51 77.11 2

PVC MW-1134A Monitoring Well 2006 3 Loess Perched 912668.6 2073888.8 136.19 88.64 79.24 2

PVC Wells Screened in Upland Complex/Mississippi River Alluvial Aquifer (UC/MRAA)

DW-01 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 912729.4 2075353.6 136.16 86 81 10 Steel DW-02 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 912966.6 2075250.0 137.08 86 81 10 Steel DW-03 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 913065.7 2075065.8 134.36 86 81 10 Steel DW-04 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 912918.1 2074947.4 133.38 86 81 10 Steel DW-05 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 913345.8 2074968.4 134.08 87.9 82.9 10 Steel DW-06 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 912667.0 2074685.6 132.7 84.3 89.3 10 Steel DW-07 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 912520.6 2074944.3 134.18 95 90 10 Steel DW-08 Dewatering Well 1972 3 Backfill Powerblock Backfill 2 912178.0 2075054.1 134.16 106.2 101.2 10 Steel MW-01 Monitoring Well 1976 Backfill Powerblock Backfill 2 912974.7 2075351.7 134.80 93.2 91.2 6

PVC MW-02 Monitoring Well 1976 Backfill Powerblock Backfill 2 913078.9 2075066.7 134.31 90.5 88.5 2

PVC MW-03 Monitoring Well 1976 Backfill Powerblock Backfill 2 913467.3 2075055 135.5 92.6 90.6 6

PVC MW-06 Monitoring Well 1976 Backfill Powerblock Backfill 2 912554.5 2074900.8 134.5 96.6 94.6 6

PVC MW-07 Monitoring Well 1976 Backfill Powerblock Backfill 2 912728.1 2075352.4 134.33 84.89 83.43 6

PVC MW-08 Monitoring Well NA Upland Complex UC/MRAA NA NA 134 31.8 41.8 2

PVC MW-09 Monitoring Well 9/15/1986 Upland Complex UC/MRAA 912161.2 2075451.1 134.85 95.43 85.43 2

PVC MW-10 Monitoring Well 9/16/1986 Upland Complex UC/MRAA 911640 2 2075108 1 134 30 101 65 91 65 2

PVC

Grand Gulf Nuclear Station Well Construction Summary 1 Well ID Installation Type Date Installed Formation Groundwater Unit of Screened Interval Northing (MS State Plane West NAD83)

Easting (MS State Plane West NAD83)

Approx.

Surface Completion Elevation (ft NAVD88)

Approx.

Top of Screened Interval (ft NAVD1988)

Approx.

Base of Screened Interval (ft NAVD1988)

Casing Diameter (inches)

Casing Material OW-05 Observation Well 1972 3 Upland Complex UC/MRAA 915007.9 2075793.8 155.51 54 44 3

PVC OW-07 Observation Well 1972 3 Upland Complex UC/MRAA 912240.1 2072872.2 158.5 NA 56 1.25 PVC OW-29A Observation Well 1972 3 Upland Complex UC/MRAA 914026.2 2073111.1 162.7 NA 29 3

PVC OW-29B Observation Well 1972 3 Upland Complex UC/MRAA 913874.2 2073078.3 160.64 NA 6

1 PVC OW-121 Observation Well 1972 3 Upland Complex UC/MRAA 913632.2 2072992.7 157.29 NA 30 3

PVC OW-202 Observation Well 1972 3 Upland Complex UC/MRAA 912418 2076414.5 193.8 NA 36 3

PVC OW-209B Observation Well 1972 3 Upland Complex UC/MRAA 912900.3 2076067.9 196.77 56 46 3

PVC P-209 Piezometer 1972 3 Upland Complex UC/MRAA 912841.4 2076113.5 195.8 NA NA 3

PVC MW-100B Monitoring Well 12/2/2010 Upland Complex UC/MRAA 913627.9 2076513.1 206.89 63.87 53.87 2

PVC MW-102B Monitoring Well 11/29/2010 Upland Complex UC/MRAA 912204.2 2076961.3 163.87 10.04 0.04 2

PVC MW-103B Monitoring Well 5/25/2011 Upland Complex UC/MRAA 911095.2 2076857.3 163.74 125.59 105.59 2

PVC MW-104B Monitoring Well 5/26/2011 Upland Complex UC/MRAA 910425.7 2075215.4 181.94 139.20 119.20 2

PVC MW-105B Monitoring Well 5/24/2011 Upland Complex UC/MRAA 912887.0 2076091.0 198.17 64.32 44.32 2

PVC MW-106B Monitoring Well 12/1/2010 Upland Complex UC/MRAA 912935.5 2077131.8 172.80 39.84 29.84 2

PVC MW-107B Monitoring Well 12/7/2010 Upland Complex UC/MRAA 912436.2 2074916.2 135.41 102.56 92.56 2

PVC MW-108B Monitoring Well 6/8/2011 Upland Complex UC/MRAA 912561.4 2074752.5 135.60 102.93 92.93 2

PVC MW-109B Monitoring Well 12/7/2010 Upland Complex UC/MRAA 912654.2 2074681.1 135.73 102.59 97.59 2

PVC MW-110B Monitoring Well 12/15/2010 Upland Complex UC/MRAA 912825.6 2074392.6 135.42 103.01 93.01 2

PVC MW-111B Monitoring Well 5/17/2011 Upland Complex UC/MRAA 912753.2 2075421.8 135.07 101.30 91.30 2

PVC MW-112B Monitoring Well 6/8/2011 Upland Complex UC/MRAA 913025.4 2075570.3 134.84 102.26 92.26 2

PVC MW-113B Monitoring Well 5/11/2011 Upland Complex UC/MRAA 913413.1 2075764.8 127.86 94.87 84.87 2

PVC MW-114B Monitoring Well 5/12/2011 Upland Complex UC/MRAA 911132.2 2074968.3 135.20 95.34 85.34 2

PVC MW-115B Monitoring Well 10/28/2011 Upland Complex UC/MRAA 912660.5 2075299.3 135.38 98.67 88.67 2

PVC MW-118B Monitoring Well 11/2/2011 Upland Complex UC/MRAA 912687.7 2075406.7 134.82 99.07 89.07 2

PVC SW-101 Sentinel Well 10/25/2011 Pipe Backfill NA 913450.1 2073001.1 114.18 94.80 89.80 4

PVC SW-102 Sentinel Well 10/25/2011 Pipe Backfill NA 913536.1 2072821.5 105.30 85.76 80.76 4

PVC SW-103B Sentinel Well 11/3/2011 Upland Complex UC/MRAA 913632.6 2072618.8 93.14 75.37 70.37 2

PVC MW-1007B Monitoring Well 2006 3 Upland Complex UC/MRAA 913331.7 2073931.8 133.51 55.76 41.36 2

PVC MW-1009B Monitoring Well 2006 3 Upland Complex UC/MRAA 913499.7 2073805.8 134.03 59.63 35.23 6

PVC MW-1012B Monitoring Well 2006 3 Upland Complex UC/MRAA 913557.7 2073850.8 134.18 59.89 35.49 6

PVC MW-1016B Monitoring Well 2006 3 Upland Complex UC/MRAA 913902.7 2073915.8 158.34 60.47 41.07 4

PVC MW-1019B Monitoring Well 2006 3 Upland Complex UC/MRAA 913964.7 2074107.8 133.46 45.03 25.63 2

PVC MW-1020B Monitoring Well 2006 3 Upland Complex UC/MRAA 913872.7 2074423.8 132.46 72.1 52.7 2

PVC MW-1022B Monitoring Well 2006 3 Upland Complex UC/MRAA 914208.7 2074309.8 133.50 43.97 24.57 2

PVC MW-1023B Monitoring Well 2006 3 Upland Complex UC/MRAA 913853.7 2073440.8 157.72 75.23 55.83 2

PVC MW-1024B Monitoring Well 2006 3 Upland Complex UC/MRAA 914452.7 2073727.8 158.35 65.78 46.38 2

PVC MW-1025B Monitoring Well 2006 3 Upland Complex UC/MRAA 914377.7 2074427.8 147.12 57.51 38.11 2

PVC MW-1026B Monitoring Well 2006 3 Upland Complex UC/MRAA 913961.7 2074694.8 131.75 51.56 32.16 2

PVC MW-1027B Monitoring Well 2006 3 Upland Complex UC/MRAA 913119.6 2074226.8 132.83 49.21 34.81 2

PVC MW-1033B Monitoring Well 2006 3 Upland Complex UC/MRAA 911992.6 2072939.8 158.48 70.35 65.95 2

PVC MW-1040B Monitoring Well 2006 3 Upland Complex UC/MRAA 912982.6 2072828.8 161.41 64.13 44.73 4

PVC MW-1042B Monitoring Well 2006 3 Alluvium UC/MRAA 915007.7 2073146.8 87.03 51.82 37.42 2

PVC MW-1043B Monitoring Well 2006 3 Upland Complex UC/MRAA 913437.7 2073211.8 121.78 61.51 47.11 2

PVC

Grand Gulf Nuclear Station Well Construction Summary 1 Well ID Installation Type Date Installed Formation Groundwater Unit of Screened Interval Northing (MS State Plane West NAD83)

Easting (MS State Plane West NAD83)

Approx.

Surface Completion Elevation (ft NAVD88)

Approx.

Top of Screened Interval (ft NAVD1988)

Approx.

Base of Screened Interval (ft NAVD1988)

Casing Diameter (inches)

Casing Material North Construction Well Production Well 9/1/1976 Upland Complex UC/MRAA 914174.0 4 2073197.8 4 140 4 23 4

-14 4 24 Stainless Steel

Grand Gulf Nuclear Station Well Construction Summary 1 Well ID Installation Type Date Installed Formation Groundwater Unit of Screened Interval Northing (MS State Plane West NAD83)

Easting (MS State Plane West NAD83)

Approx.

Surface Completion Elevation (ft NAVD88)

Approx.

Top of Screened Interval (ft NAVD1988)

Approx.

Base of Screened Interval (ft NAVD1988)

Casing Diameter (inches)

Casing Material Wells Screened in Catahoula Formation MW-1007C Monitoring Well 2006 3 Catahoula Catahoula 913338.7 2073925.8 133.10

-15.14

-29.54 4

PVC MW-1009C Monitoring Well 2006 3 Catahoula Catahoula 913486.7 2073808.8 134.05

-13.87

-33.27 4

PVC MW-1012C Monitoring Well 2006 3 Catahoula Catahoula 913556.7 2073840.8 134.23

-15.61

-35.01 4

PVC MW-1020C Monitoring Well 2006 3 Catahoula Catahoula 913881.7 2074405.8 132.54 12.1

-7.3 4

PVC MW-1024C Monitoring Well 2006 3 Catahoula Catahoula 914463.7 2073721.8 158.35 0.98

-18.42 4

PVC MW-1027C Monitoring Well 2006 3 Catahoula Catahoula 913124.6 2074218.8 133.18

-24.79

-34.19 2

PVC MW-1042C Monitoring Well 2006 3 Catahoula Catahoula 915015.7 2073137.8 86.47 0.81

-13.59 2

PVC MW-1082C Monitoring Well 2006 3 Catahoula Catahoula 910288.6 2072691.7 199.12 47.04 27.64 4

PVC MW-1134C Monitoring Well 2006 3 Catahoula Catahoula 912654.6 2073874.8 136.85

-19.78

-29.18 4

PVC

1. Information developed from various sources - elevation values are approximate pending validation of reference plane updates
2. While backfill around the power block is in communication with the groundwater in the Upland Complex, its characteristics may not reflect those in the native material
3. Installation dates are inferred from dates on boring logs, historical potentiometric surface maps, and well level data records.
4. Location coordinates and surface completion elevation is based on Google Earth rather than surveyed locations; thus approximate elevations of top and bottom of well screens are also referenced to the Google Earth indicated surface elevation.

Entergy GGNS Notes on Monitoring Installation Position Datums 20110803 cln Vertical Datums Well Grouping Nomenclature Vertical Datum FTN MW-1XXY All survey data originally reported in NAVD88 COLA MW1XXXY Table 2.4.12-201 denotes ft. MSL as datum Original boring logs denote vertical datum as NGVD29 Ground surface elevations in the table are the same as NGVD elevations on boring logs Table 2.4.12-201 is a summary of boring log data Boring log data trumps summary table Summary table ground surface elevations should be denoted as "ft NGVD29" not "ft MSL" Assume that TOC elevations should also be "ft NGVD" not "ft MSL" Historical MW-XX Regularly utilized wells have been recently resurved with FTN installations P-XX(X)

Other wells are either denoted in the UFSAR as referenced to "ft MSL" or are not denoted and assumed to be in "ft MSL" OW-XX(X)(Y)

Horizontal Datums Well Grouping Nomenclature Horizontal Datum FTN MW-1XXY All survey data originally reported in MS State Plane West, NAD83 COLA MW1XXXY COLA Table 2.5.210 denotes datum as MS State Plane, NAD27 Coordinates converted to MS State Plane West, NAD83 Historical MW-XX Regularly utilized wells have been recently resurved with FTN installations P-XX(X)

Horizontal information for other wells could not be located in the UFSAR or other sources OW-XX(X)(Y)

Coordinates for these installations were collected using a hand-held GPS in WGS84 WGS84 coordinates were then converted to MS State Plane West, NAD83 Nomenclature X

Number Y

Letter (A, B, C) denoting aquifer (Perched, UC/MRAA, Catahoula, respectively)

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