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FIGURE <br />WEST CONTRA COSTA SANITARY LANDFILL, <br />1 PARR BOULEVARD, RICHMOND, CALIFORNIA <br />FORWARD, INC. <br />9999 SOUTH AUSTIN ROAD, MANTECA, CALIFORNIA <br />WELL INSTALLATION AND <br />INTERIM REMEDIAL ACTION REPORT, APPENDIX G-1 <br />CDCR-EW-3 CONSTANT RATE TEST <br />INTERMEDIATE WELL HYDROGRAPHS <br />10/1/2024 4:33:38 PMG-1 <br />CDCR-EW-3 <br />(Pumping) <br />AMW-61M <br />CRT Pumping Phase <br />Recovery Phase <br />16.08 ft Drawdown <br />0.39 ft Drawdown <br />0.12 ft Drawdown AMW-61S Water Column Above Pressure Transducer ft)CDCR-EW-3 <br />80-85 and 90-115 (total 30 ft) <br />8-hour pumping phase on <br />8/9/2024 <br />Pumped at 24.1 gpm <br />16.08 ft drawdown <br />AMW-61M <br />Screen 110-115 ft bgs <br />Located 11 ft from CDCR-EW-3 <br />0.39 ft drawdown <br />AMW-61S <br />Screen 60-80 ft bgs <br />Located 11 ft from CDCR-EW-3 <br />0.12 ft drawdown <br />AMW-50M <br />Screen 100-120 ft bgs <br />Located 515 ft from CDCR-EW-3 <br />0.09 ft drawdown <br />Conclusion: Hydraulic influence <br />from CDCR-EW-3 pumping well <br />indicated up to approximately 500 <br />ft within the intermediate zone at a <br />pumping rate of 24.1 gpm over an <br />8-hour period. <br />Notes: <br />1. Water levels have been corrected for barometric pressure influence. <br />2. Vertical scale on graphs is not uniform between graphs. <br />3. Drawdown trends interpreted from pressure transducer data. <br />bgs = below ground surface <br />CDCR = California Department of Corrections and Rehabilitation <br />CRT = constant rate test <br />ft = feet <br />gpm = gallon per minute Water Column Above Pressure Transducer ft)Water Column Above Pressure Transducer ft)AMW-50M <br />Drawdown and Recovery Indicated but <br />Transducer Moved when Manually Monitoring.Water Column Above Pressure Transducer ft)0.09 ft Drawdown <br />(manual data)