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c) The remaining material will be described by the geologist <br /> in charge, and recorded on field logs Any unused material & <br /> drill cuttings will be properly contained for storage and later <br /> disposal . <br /> 4 . After obtaining a soil sample at or near the capillary <br /> fringe, a hydropunch or similar type equipment will be pushed <br /> into the water table a sufficient distance to allow collection of <br /> a water sample for analysis . A clean teflon or stainless steel <br /> bailer will be lowered into the hydropunch tool and the removed <br /> water will be placed in previously preserved glass vials for <br /> analysis . Care will be taken to insure that there is no <br /> headspace in the vials, they will be labeled and preserved for <br /> analysis <br /> 5 After completion of coring and sampling operations, auger <br /> hole "B" will be thoroughly grouted from bottom to the surface <br /> with a cement slurry under the direction of a representative of <br /> the San Joaquin County EHD. If soil and water samples taken from <br /> auger holes "A" , "C" , & "D" (see PLATE I) reveal that no contam- <br /> ination is present, they will be converted to groundwater moni- <br /> toring wells as described below However, if evidence of soil <br /> and/or water contamination is noted, they will not be converted <br /> to wells, but will be grouted in the same manner as auger hole <br /> "B" <br /> 6 Soil & water samples will be transported under chain of <br /> custody to a Certified laboratory, (either onsite or standard, ) <br /> with instructions to analyze for BETX (EPA 8020 , ) & TPH-G (EPA <br /> 8015M, ) with MTBE distinction using detection limits as specified <br /> by the San Joaquin County EHD and CWQCB. <br /> If auger holes "A" , "C" , or "D" do not reveal any soil or water <br /> contamination, each, (or all , ) will be converted to monitoring <br /> wells as detailed below <br /> 7 . After determining the potentiometric surface, estimated to be <br /> about 46 ' bgl, the augers will be advanced a minimum of 10 ' below <br /> water depth. <br /> 8 2" blank & slotted, flush screw-thread PVC casing, fitted <br /> with a screw-type bottom cap, will be run in the hole . Screen <br /> length will be 201 , and will extend from bottom to 10 ' above the <br /> water table Slot size to be . 020" When bottom is reached, the <br /> casing will be pulled up slightly to avoid the possibility of <br /> buckling or laying against the side of the hole The annular <br /> space between casing & augers will be filled with clean, graded, <br /> #2 1/2 or #3 sand. The casing will be constantly vibrated during <br /> 6 <br />