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Rani.of Stockton Page 5 <br /> Site Characterization-Work Plan <br /> Former Union Facility,-Cutter Lumber <br /> 3422&3440 5 EI Dorado,Stockton <br /> Project No 102 2 <br /> October 7,1996 <br /> pg/kg and 1 mg/kg for TPH-Gasoline and 5 0 mg/kg for TPH-D A Chain of Custody <br />' will be completed for all samples collected and tracked to ensure sample Integrity <br /> 4.3 Water Well Casing Integrity Test <br />' In order to determine the extent to which the domestic water well casing across shallow <br /> groundwater may be leaking, the following steps will be undertaken <br />' 1 A temporary bridge plug will be set in the casing at about 50 feet <br />' 2 The well water will be pumped or bailed dry from the surface of groundwater at about <br /> 35 feet, to the top of the bridge plug The water level in the well will then be <br />' monitored to determine if water in entering the well through hole(s) in the casing, and <br /> if so, at what rate The running and setting of the plug will be performed Osterberg & <br /> Stewart (C57 Lic 446670) of Modesto The removal of water and monitoring will be <br />' conducted by Phase One Environmental Inc personnel <br /> 3 It is expected that after this work is successfully completed, there will no longer be a <br /> need for the water well, and a permit will be obtained to permanently abandon the <br /> well <br />' 50 REPORTING <br /> The information gathered during this phase of work will be presented in a report which <br />' will include the results of field data and sample analyses collected, and their implications <br /> The report will be prepared and signed by a registered geologist responsible for the work <br /> Copies of the report will be forwarded to both the appropriate County and State <br />' regulatory agencies <br /> 6.0 SCHEDULING <br /> The following is the schedule of work as currently envisioned <br />' EVENT DATE <br /> Work Plan approved b San Joaquin County PHS/EHD 10/15/96 <br /> Request USTCFP Pre-approval 10/16/96 <br /> Receive USTCFP Pre-approval 11/10/96 <br /> Perform Field Work 11/20/96 <br /> Submit Report of Work 12/15/96 <br /> t2937 Veneman Ave,#6240 Phase One Environmental Inc Phone(209)569-0293 <br /> Modesto,CA 95356 Fax (209)569-0295 <br />