CRFQ AGR26-16 - Exhibit B 7-BC15 Piezometer Data Summary.pdf
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- Attached to
- Brush Creek 15 Dam Rehabilitation-Construction
- Solicitation number
- CRFQ-1400-AGR2600000016-4
- Issued by
- Kanawha County, West Virginia
About this file
This is a piezometer data summary document from the NRCS (Natural Resources Conservation Service) and Aterra-Schnabel JV related to the geotechnical investigation of the Brush Creek Site 15 Dam in West Virginia. The document provides a comprehensive record of water level observations collected from multiple monitoring wells (borings) at the dam site between March 2019 and July 2024. The data includes readings from six primary observation points: B-51A, B-651, GF-1D, GF-1S, GF-2D, GF-2S, and GF-3, each with documented ground surface elevations and corresponding water level measurements. The normal pool elevation for the reservoir is established at 2,489.5 feet, and the monitoring data captures water level fluctuations during various pool conditions including normal operations, low pool levels (approximately 8-10 feet below normal), and artesian conditions where groundwater pressure exceeded ground surface elevation. Observations were recorded with specific timestamps and notations regarding reservoir conditions at the time of measurement.
The data reveals significant hydrogeological variations across the site, with some wells exhibiting consistent water levels while others demonstrated substantial fluctuations or remained dry during certain periods. Notable findings include artesian conditions documented in borings B-651 and GF-3 during the 2019 monitoring phase, with negative depth-to-water measurements indicating pressurized groundwater conditions. The GF-2S boring showed periods of being dry from March through June 2022 before water levels returned. Water level elevations ranged from approximately 2,435 feet to 2,486 feet depending on the boring location and measurement date. This monitoring data serves as critical baseline information for assessing groundwater conditions and dam stability during the rehabilitation project, with regular observations continuing through 2024 to track seasonal and operational variations in subsurface hydrology.
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NRCS - West Virginia Final Geotechnical Investigation Report – Brush Creek Site 15
Summary of Water Levels in Observations at Brush Creek Site 15 Normal Pool EL (ft) 2489.5
Boring ID Ground Surface Elevation (ft)
Depth to Water (ft)
Elevation of Water (ft)
Date of Water Level Reading Notes Event Reservoir Level
B-51A 2508.1 68.7 2439.5 3/20/2019 11:24 Observation Well B-51A 2508.1 56.7 2451.4 4/3/2019 11:20 Observation Well B-51A 2508.1 62.0 2446.1 4/17/2019 15:57 Observation Well B-51A 2508.1 70.9 2437.2 5/1/2019 11:25 Observation Well B-51A 2508.1 71.6 2436.5 5/6/2019 12:20 Observation Well B-51A 2508.1 72.8 2435.3 5/9/2019 12:15 Observation Well B-51A 2508.1 72.4 2435.7 5/13/2019 12:14 Observation Well B-51A 2508.1 46.1 2462.0 9/29/2021 18:15 Observation Well Low Pool (~8ft.)
B-51A 2508.1 48.1 2460.0 2/1/2022 11:30 Observation Well ~10’ low B-51A 2508.1 47.2 2460.9 5/12/2022 0:00 Observation Well ~0.5’ high B-51A 2508.1 46.2 2461.9 2/7/2023 0:00 Observation Well B-51A 2508.1 46.5 2461.7 10/1/2023 0:00 Observation Well B-51A 2508.1 46.3 2461.8 1/30/2024 0:00 Observation Well Normal B-51A 2508.1 46.3 2461.8 4/29/2024 0:00 Observation Well Normal B-51A 2508.1 46.2 2461.9 7/24/2024 0:00 Observation Well Pool Level Low B-651 2436.8 11.4 2425.4 3/18/2019 14:37 Encountered B-651 2436.8 0.0 2436.8 3/18/2019 17:02 Completion B-651 2436.8 0.2 2436.6 3/19/2019 7:30 After Drilling B-651 2436.8 -0.7 2437.5 3/19/2019 11:39 Artesian Casing Pulled B-651 2436.8 -1.1 2437.9 4/3/2019 12:00 Artesian After Drilling B-651 2436.8 -1.5 2438.3 4/17/2019 15:44 Artesian Observation Well B-651 2436.8 -2.4 2439.2 5/6/2019 13:14 Artesian Observation Well B-651 2436.8 -2.1 2438.9 5/6/2019 17:15 Artesian Observation Well B-651 2436.8 -2.1 2438.9 5/9/2019 14:00 Artesian Observation Well B-651 2436.8 -2.7 2439.5 5/13/2019 11:57 Artesian Observation Well B-651 2436.8 0.0psi @guage - 9/29/2021 18:00 Observation Well Low Pool (~8ft.)
B-651 2436.8 0.0psi @guage - 2/1/2022 11:30 Observation Well B-651 2436.8 0.0psi @guage - 5/12/2022 0:00 Observation Well ~0.5’ high B-651 2436.8 0.0psi @guage - 2/7/2023 0:00 Observation Well Normal GF-1D 2507.4 33.5 2473.9 3/11/2019 17:40 Observation Well GF-1D 2507.4 33.4 2474.0 3/16/2019 13:50 Observation Well GF-1D 2507.4 33.7 2473.7 3/19/2019 8:22 Observation Well
Project 18C35013.04 Page 1 of 4 Aterra-Schnabel JV
Summary of Water Levels in Observations at Brush Creek Site 15 Normal Pool EL (ft) 2489.5
Boring ID Ground Surface Elevation (ft)
Depth to Water (ft)
Elevation of Water (ft)
Date of Water Level Reading Notes Event Reservoir Level
GF-1D 2507.4 34.6 2472.8 4/3/2019 13:18 Observation Well GF-1D 2507.4 33.9 2473.5 4/17/2019 15:30 Observation Well GF-1D 2507.4 32.8 2474.6 5/6/2019 12:54 Observation Well GF-1D 2507.4 38.3 2469.1 8/31/2021 10:35 Observation Well Low Pool GF-1D 2507.4 39.6 2467.8 9/29/2021 17:30 Observation Well Low Pool (~8ft.)
GF-1D 2507.4 41.9 2465.5 2/1/2022 11:40 Observation Well ~10’ low GF-1D 2507.4 35.9 2471.5 6/9/2022 12:00 Observation Well Normal GF-1D 2507.4 36.1 2471.3 2/7/2023 0:00 Observation Well Normal
GF-1D 2507.4 37.4 2470.0 10/1/2023 0:00
GF-1D 2507.4 37.2 2470.2 1/30/2024 0:00 Observation Well Normal GF-1D 2507.4 37.4 2470.0 4/29/2024 0:00 Observation Well Normal GF-1D 2507.4 37.4 2470.0 7/24/2024 0:00 Observation Well Pool Level Low GF-1S 2507.4 47.2 2460.2 3/11/2019 17:40 Observation Well GF-1S 2507.4 47.6 2459.8 3/16/2019 13:51 Observation Well GF-1S 2507.4 48.5 2458.9 3/19/2019 8:28 Observation Well GF-1S 2507.4 47.8 2459.6 4/3/2019 13:14 Observation Well GF-1S 2507.4 21.4 2486.0 4/17/2019 15:30 Observation Well GF-1S 2507.4 30.5 2476.9 5/6/2019 12:57 Observation Well GF-1S 2507.4 24.2 2483.2 8/31/2021 10:35 Observation Well Low Pool GF-1S 2507.4 44.1 2463.3 9/29/2021 17:30 Observation Well Low Pool (~8ft.)
GF-1S 2507.4 46.0 2461.4 2/1/2022 11:40 Observation Well ~10’ low GF-1S 2507.4 42.6 2464.8 6/9/2022 12:00 Observation Well Normal GF-1S 2507.4 29.9 2477.5 2/7/2023 0:00 Observation Well Normal
GF-1S 2507.4 30.3 2477.2 10/1/2023 0:00
GF-1S 2507.4 30.1 2477.3 1/30/2024 0:00 Observation Well Normal GF-1S 2507.4 30.3 2477.2 4/29/2024 0:00 Observation Well Normal GF-1S 2507.4 30.2 2477.2 7/24/2024 0:00 Observation Well Pool Level Low GF-2D 2476.5 33.1 2443.4 3/11/2019 17:50 Observation Well GF-2D 2476.5 33.3 2443.2 3/16/2019 13:53 Observation Well GF-2D 2476.5 33.2 2443.3 3/19/2019 9:10 Observation Well GF-2D 2476.5 33.0 2443.5 4/3/2019 12:20 Observation Well GF-2D 2476.5 33.3 2443.2 4/17/2019 15:35 Observation Well
Project 18C35013.04 Page2 of 4 Aterra-Schnabel JV
Summary of Water Levels in Observations at Brush Creek Site 15 Normal Pool EL (ft) 2489.5
Boring ID Ground Surface Elevation (ft)
Depth to Water (ft)
Elevation of Water (ft)
Date of Water Level Reading Notes Event Reservoir Level
GF-2D 2476.5 33.1 2443.4 5/6/2019 13:04 Observation Well GF-2D 2476.5 34.1 2442.4 8/31/2021 11:00 Observation Well Low Pool GF-2D 2476.5 33.9 2442.6 9/29/2021 17:40 Observation Well Low Pool (~8ft.)
GF-2D 2476.5 36.3 2440.2 2/1/2022 11:40 Observation Well ~10’ low GF-2D 2476.5 35.3 2441.2 6/9/2022 12:10 Observation Well Normal GF-2D 2476.5 20.0 2456.5 2/7/2023 0:00 Observation Well Normal
GF-2D 2476.5 20.6 2455.9 10/1/2023 0:00
GF-2D 2476.5 20.4 2456.1 1/30/2024 0:00 Observation Well Normal GF-2D 2476.5 20.6 2455.9 4/29/2024 0:00 Observation Well Normal GF-2D 2476.5 20.6 2455.9 7/24/2024 0:00 Observation Well Pool Level Low GF-2S 2476.5 31.0 2445.5 3/11/2019 17:50 Observation Well GF-2S 2476.5 - - 3/16/2019 13:54 Dry Observation Well GF-2S 2476.5 - - 3/19/2019 9:15 Dry Observation Well GF-2S 2476.5 - - 4/3/2019 12:25 Dry Observation Well GF-2S 2476.5 - - 4/17/2019 15:35 Dry Observation Well GF-2S 2476.5 31.3 2445.2 5/6/2019 13:01 Observation Well GF-2S 2476.5 - - 8/31/2021 11:00 Dry Observation Well Low Pool GF-2S 2476.5 - - 9/29/2021 17:40 Dry Observation Well Low Pool (~8ft.)
GF-2S 2476.5 - - 2/1/2022 11:50 Dry Observation Well ~10’ low GF-2S 2476.5 - - 6/9/2022 12:10 Dry Observation Well Normal GF-2S 2476.5 33.0 2443.5 2/7/2023 0:00 Observation Well Normal
GF-2S 2476.5 33.7 2442.9 10/1/2023 0:00
GF-2S 2476.5 33.6 2442.9 1/30/2024 0:00 Observation Well Normal GF-2S 2476.5 33.7 2442.9 4/29/2024 0:00 Observation Well Normal GF-2S 2476.5 33.6 2442.9 7/24/2024 0:00 Observation Well Pool Level Low GF-3 2437.8 0.3 2437.5 3/11/2019 18:00 Observation Well GF-3 2437.8 -0.5 2438.3 3/16/2019 13:56 Artesian Observation Well GF-3 2437.8 -0.2 2438.0 4/3/2019 12:16 Artesian Observation Well GF-3 2437.8 -0.8 2438.6 4/17/2019 15:40 Artesian Observation Well GF-3 2437.8 -1.3 2439.1 5/6/2019 13:08 Artesian Observation Well GF-3 2437.8 1.5 2436.3 8/31/2021 11:05 Observation Well Low Pool GF-3 2437.8 1.5 2436.3 9/29/2021 17:45 Observation Well Low Pool (~8ft.)
Project 18C35013.04 Page 3 of 4 Aterra-Schnabel JV
Summary of Water Levels in Observations at Brush Creek Site 15 Normal Pool EL (ft) 2489.5
Boring ID Ground Surface Elevation (ft)
Depth to Water (ft)
Elevation of Water (ft)
Date of Water Level Reading Notes Event Reservoir Level
GF-3 2437.8 2.6 2435.2 2/1/2022 11:50 Observation Well ~10’ low GF-3 2437.8 2.3 2435.5 6/9/2022 12:20 Observation Well Normal GF-3 2437.8 1.8 2436.0 2/7/2023 0:00 Observation Well Normal
GF-3 2437.8 1.9 2435.9 10/1/2023 0:00
GF-3 2437.8 1.8 2436.0 1/30/2024 0:00 Observation Well Normal GF-3 2437.8 1.9 2435.9 4/29/2024 0:00 Observation Well Normal GF-3 2437.8 1.9 2435.9 7/24/2024 0:00 Observation Well Pool Level Low
Project 18C35013.04 Page 4 of 4 Aterra-Schnabel JV
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