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PREAUAN ENGINEERA INC. <br /> �( Consulting Engineers <br /> 535 Main Street <br /> Martinez.Ca.04533 <br /> (415)372-5444 <br /> MONITOR WELL CONSTRUCTION <br /> MOBIL SERVICE STATION #10-NP4 <br /> 2375 Tracy Blvd. <br /> Tracy, California- <br /> NW-8 <br /> Well completed to 15 feet in depth with 2-ihch. Schedule 40 PVC <br /> casing, flush-threaded joints. Screen (0.020 inch slot) set from <br /> 15 to 4 feet. dumber 6x12 and 12x20 Monterey sand placed from 15 <br /> to 3 feet. Bentonite pellets placed from 3 to 2.5 feet. <br /> Concrete seal placed from 2.5 to 0 feet. <br />