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:. PUBLIC HEAEM SERVICES <br /> k1:u::.,f itt LV.- <br /> I,O B;x-11)li; li.i,€ H.in lr'm :I\cn:r r ,n. .€i€i rni.i €` ai <br /> October 1, 1990 <br /> Ken Olds <br /> Lammersville School District <br /> 16555 W. Von Sosten Road <br /> Tracy, CA 95376 <br /> RE: Lammersville School Dist. IN REPLY REFER TO SITE CODE: 1749 <br /> 16555 W. Von Sosten Rd. <br /> Tracy, CA 95376 <br /> our review of your Problem Assessment Report dated July 16, 1990 .is <br /> complete. <br /> No petroleum hydrocarbons were detected in the analyzed soil <br /> samples for MW #7A and MW #8A and minor amounts of contamination <br /> were detected for MW #6A. However, during a site inspection on <br /> July 19, 1990, it was noted that soil sampling was not conductnd in <br /> accordance with the LUFT Manual Guidelines. Specifically, the <br /> brass cylinders were not covered with aluminum foil prior to <br /> placement of end caps for samples MW #7A and MW #8A. The brass <br /> cylinders were not placed in the split spoon sampler for Wa #6A so <br /> the sample was hand packed. In addition, odor and discoloration <br /> were noted during the sampling. Therefore, the soil sample results <br /> are not recognized as being representative of the subsurface <br /> conditit.ns. <br /> T Additional soil sampling will be necessary to delineate the extent <br /> of lateral petroleum hydrocarbons in the soil. <br /> A work plan for the continued soil contamination characterization <br /> should be submitted to our office by November 21, 1990. Also, <br /> quarterly monitoring of the wells is to continue with the next <br /> sampling to be performed in September. A 48 hour notification is <br /> required prior to any field activity, including water sampling. <br /> "" A Dimion of Sm joiqum Counry Heilth Cur$rrcues <br />