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3 <br /> Golden Grain Company <br /> January 11 , 1989 <br /> 202/799-5045.01. <br /> Collect water samples from each monitoring well not im- <br /> gacted with free-floating fuel and submit the samples <br /> for laboratory analyses. <br /> Prepare a Problem Assessment Report <br /> fo'thisw ata with <br /> recommendations for any necessaryadditional <br /> Y All necessary drilling and/or well permits will be obtained <br /> from the San Joaquin County Local Health District, as well as any <br /> clearance or encroachment permits needed to drill in the City of <br /> t <br /> Manteca right-of-way. Pe'mission to drill on private f.roperty <br /> will also be obtained. <br /> SOIL BORINGS AND SAMPLING <br /> Seven borings :could be drilled for monitoring wells. Five <br /> ^ <br /> used locations 9, 11, 13, 14, and 15) <br /> � of the br�E irzi c (at prat <br /> world be drilled with a truck-mounted drilling rig using 12-inch <br /> When the augers <br /> outer diameter (O.D. ) hollow-stem augers. <br /> reached the inferred confining layer, casing would be driven down <br /> would continue to the depth of 50 <br /> to the clay, and the dr.ill �n9 the borings would be <br /> feet. At proposed locacic,ns 10 and 12, <br /> n drilled using a trailer-mounted drill rig and 7-inch O.D. hollow- <br /> stem augers. The holes would be drilled to the confining clay <br /> layer or 30 feet, whichever was reached first. All drilling <br /> would be supervised by a geologist under the direction of a <br /> California Registered geologist. A detailed log of materials <br /> encountered during drilling would be kept' <br /> Samples would be collected using a split-spoon sampler <br /> fitted with 6--inch -long by--2-inch diameter brass tubes' The <br /> 15 <br />