Laserfiche WebLink
Trott Brook Crossing EAW August 2021 <br /> Table 7. Ground Water Elevations Observed During Geotechnical Site Assessment <br /> Boring Ground Elevation, Water Table Depth Below Ground Water Table Elevation,Feet MSL <br /> Number Feet MSL Surface,Feet(End of Drilling) (End of Drilling) <br /> 1 884.3 18.1 866.2 <br /> 2 903.2 Not encountered No water table to 882.2 <br /> 3 889.1 12.2 876.9 <br /> 4 892.4 11.3 881.1 <br /> 5 888.3 12.5 875.8 <br /> 6 883.3 11.1 872.2 <br /> 7 882.6 19.6 863.0 <br /> 8 875.1 12.2 862.9 <br /> 9 888.5 Not listed, 7.5 at time of drilling 8 8 1.0 at time of drilling <br /> 10 890.0 12.2 877.8 <br /> 11 902.5 Not encountered No water table to 881.5 <br /> 12 885.7 14.5 871.2 <br /> Three piezometers were installed on July 21, 2021 by Haugo GeoTechnical Services (Table 8). <br /> Piezometer locations are shown in the GeoTechnical Boring Report(Appendix C). <br /> Table 8. Piezometer Water Level Summary <br /> Piezometer Date Approximate Depth to Approximate Groundwater <br /> Number Groundwater(feet) Elevation(feet) <br /> SB-4/P-4 8/4/2021 10.81 883.7 <br /> SB-6/P-6 8/4/2021 8.26 876.6 <br /> SB-10/P 10 j 8/4/2021 j 8.75 884.3 <br /> The groundwater elevations observed with geotechnical borings and piezometer readings ranged <br /> from 7.5 feet below the soil surface to greater than 21 feet below the soil surface. The elevation of <br /> groundwater observed ranged from to 862.9 to 884.3 ft msl. <br /> Boring logs for nearby wells were also referenced to determine the depth to groundwater in the <br /> project area. The elevation depth to static groundwater levels in 11 groundwater wells located near <br /> the project area ranged from 15 to 25 feet and from 862 ft msl to 885 ft msl (Table 9). <br /> 13 <br />