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r • <br /> auger flights to complete each soil boring/monitoring well <br /> without the necessity of decontaminating equipment. The rig will <br /> be equipped with an approved core-sampling device designed to <br /> hold metal tubes for obtaining soil samples. The coring <br /> equipment will be operated either by a conventional drive hammer, <br /> or a wireline operated system to allow continuous coring if <br /> desired. Revised PLATE V is a general site map showing the <br /> proposed locations of the soil boring/monitoring wells A <br /> drilling permit application & necessary fee is enclosed <br /> 2 Cores will be taken at 5' intervals from 5' bgl to the <br /> capillary fringe, a portion of each core will be promptly covered <br /> with teflon tape & plastic end caps, sealed with duct tape, <br /> labeled & placed in a sealed ice chest for later transport to a <br /> State Certified laboratory for analysis . Unused core material <br /> and drill spoils will be stored in metal drums, clearly labeled, <br /> and stored on location pending results of laboratory analysis . <br /> 3 After obtaining a soil sample from the capillary fringe, each <br /> hole will be advanced at least 10 feet below the water table and <br /> completed as a monitoring well . Each well will be completed as <br /> shown on the attached schematic, PLATE_ VI , using either 2" or 4" <br /> OD PVC slotted and blank casing. <br /> 4 . Soil samples will be transported to a State certified labora- <br /> tory with instructions to test for BTEX (EPA 8020, ) TPH-G (EPA <br /> 8015M, ) and total lead (EPA 7420 . ) <br /> 5 Within 12-18 hours of completion, the well will be developed <br /> by surging and/or swabbing with a hard rubber disc or other <br /> suitable device Purge water will be placed in properly labeled <br /> and sealed drums & stored on site pending results of laboratory <br /> analysis <br /> 6 . As soon as practical after development, the well will be <br /> purged, measured, and sampled according to WJH field protocol, a <br /> copy of that document was included with the original workplan as <br /> EXHIBIT J <br /> 7 Water samples will be transported under chain of custody to a <br /> State Certified laboratory with instructions to test for BTEX & <br /> TPH-G, using San Joaquin County approved detection limits <br /> 8 . As soon as practical after completion of all wells, the <br /> elevation & surface coordinates of each will be determined by a <br /> licensed surveyor. <br /> 9 After receipt and analysis of all the data, a report will be <br /> prepared and submitted to the San Joaquin County EHD for review & <br /> comment. If additional work appears necessary, proposals for <br /> 2 <br />