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P 02 <br /> ►` I <br /> Stu <br /> CONSULTIN, Ef\K.aINEERS <br /> & GE�LC)GISTS _ <br /> — - ,163.) Harrk�Cn Ave 4D) �I+ n �t�d L'r i J. <br /> urtV,i CA >6y01 Inc l h Ig C� "'(,(fil <br /> "107) 141 �s1+i' fylS� tat 3424 <br /> iJVi Fi rA '707) -41 Zi 'ja �A>k <br /> DeCemtae x 3, 1992 <br /> Mr. M.Lchael M. Collins <br /> Environmental Health Specialist <br /> San Joaquin County <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stocktoxi, California 95201 <br /> RE: Over excavation and soil sampling at 4579 Acampo Road, <br /> Acampo, California. <br /> SHN Project No . 92-3002 <br /> Dear Mr . rollins: <br /> In accordance with our telephone conversation of December 2 , <br /> 1992, we have compiled a summary of work and analytical results <br /> performed on december 1 , 1992 at the above referenced location: <br /> 1 . Over excavation of an open tank excavation was conducted to <br /> determine the verti.Cal extent of possible hydrocarbon <br /> contamination. The excavation was observed by a qualified SHN <br /> Environmental Specialist who monitored the excavated soil with <br /> PID and TLV meters . Soil from the excavation which did not <br /> register any reading on the meters was separated from sails which <br /> did register readings . Compobite soil samples from the clear <br /> stockpiles were analyzed for TPH-G and BTEX; the samples were <br /> non-elect for all c osis t_y tuents <br /> I <br /> 2 . Soil from the excavation which indicted readings of <br /> hydrocarbons from the meters were placed on visqueen, Covered and <br /> left fox futuLe remedi.ataoa. <br /> 3 , Four soil samples were coltected from in-place soils within <br /> the excavation. The depths, location, and results are summarized <br /> below: <br /> DEPTH TPH-C, Benzene Toluene Ethylbenzene Xylenes <br /> PPni PPM PPM ppm Ppm <br /> ND ND ND ND ND <br /> l t ' <br /> 520 1 . 2 26 14 82 <br /> 21 , 2200 ND 140 63 370 <br /> West wall 3. 2 0 19 0 . 42 0 . 13 0 . 73 <br />