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DER Bright Bright ttnpk.RigMIDiutirr. The well will be finished with a locking pressure cap when not in use to limit the introduction of foreign matter into the well. 1.4. TEMPORARY WELL DEVELOPMENT Following installation of the well screen and casing, the test well will be developed to remove fine silt from the well bore and to effectively increase the hydraulic radius of the well. Air lifting and surging along the screened interval of the well will be performed to settle the sand filter pack and draw fine grained material out of the well. The well development purge water will be discharged to the land surface in such a manner as not to allow the discharge to enter back into the well or any surface water body. 1.5. PUMPING TEST The temporary test well will be pumped at a constant rate for up to 24 hours following the completion of the installation. The water levels will be recorded in the surrounding piezometers and pumping well during the test. The discharge water generated during the test will be directed out into the farmer's field and not allowed to flow back into the well. 1.6. PIEZOMETER AND WELL ABANDONMENT In accordance with San Joaquin Well Standards for the appropriate abandonment of water wells, the piezometers and temporary well casing will be destroyed by pressure grouting each in place. An approved grout mixture will be installed into the well via tremmie pipe, filling the well screen and casing from the bottom up. After the well casing has been filled, a cap will be installed onto the well top and pressure will be applied until it stabilizes to the agreement of the SJEHD inspector. The top 3 feet of the PVC well casing will be excavated and cut off below grade, and additional grout will be introduced to the well casing and allowed to flow over the top of the casing and into the excavation creating a mushroom cap of cement. 87057IST09L024 Page 5 of 7 February 5, 2009 Copyright 2009 Kleinfelder