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FANS; _ #, <br /> m <br /> PUBLIC HEAU H SERVICES <br /> SANJOAQ[IN(OC'\TY10 <br /> J061 KHAN\A l.1.[)..MT H <br /> HulthOff iu.f c <br /> Ro. Rax 009 i.16W 1iasr H.ta-Inon Avenue; tilt[kwn,California.) OI <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 <br /> Dist . IN REPLY REFER TO SITE CODE: 1749 <br /> 16555 W. Von Sosten <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 /> on <br /> samples for MW #7A and MW #8A and minor amounts ite inspe tion�on <br /> were detected for MW #6A. However, in <br /> July 19, 1990, it was noted that soil sampling was not conductedthe <br /> accordance with the LUFT Manual Guidelines. Specifically, <br /> brass cylinders were not covered with aluminum foil prior to <br /> "- placemf.nt of end caps spoon same for samples MWPA mpler for Mvj #6A ss <br /> so <br /> cylinders were not placed in the split spoon <br /> the sample was hand packed. In addition, odor and discoloration <br /> were ed ecogni edass <br /> during e sampling. lsample <br /> being repsentative of the <br /> arenotsubsurface <br /> conditions. <br /> 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 nP'.a <br /> sampling t3 be performed in September. A 48 houWat� lsampling.�s <br /> required prior to any field activity, including <br /> N Dis'isiun(,f$an fuaquin Counry Ht4kh Cate Sert i.es <br />