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�rI <br /> PUBLIC HEALTH SERVItES �. .� ..oG <br /> SAN IOAQUINL COUNTY <br /> a- <br /> JOGI KHANNA M.D..M.P.H. <br /> Health Officer •., ;P <br /> gL��aR� <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) a Stockton,California 95201 <br /> (209)468-3400 <br /> GOTELLI —7EDWARD l'. <br /> GOTELLI TRUCKING DEC <br /> P 0 BOX 55103 <br /> STOCKTON CA 95205 <br /> RE: Gotelli Trucking <br /> SITE CODE: 1045 <br /> 1649 East Channel Street <br /> Stockton CA <br /> San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS/EHD) has completed review of the "Stockpiled Soil <br /> Removal" report dated November 16, 1992 and the "Soil Boring <br /> Installation" report dated November 16, 1992, both prepared by <br /> Geological Audit. PHS/EHD has the following comments for your <br /> consideration. <br /> The stockpiled soil resulting from the January 27 , 1989 over <br /> excavation of diesel contaminated soil detected during the <br /> October 7 , 1988 removal of the 8, 000 gallon and the 10, 000 gallon <br /> underground storage tanks, was characterized and transported for <br /> disposal to BFI/Vasco Sanitary Landfill in Livermore CA. <br /> The investigation of contamination detected during the July 12 , <br /> 1990 removal of the 1, 000 gallon gasoline underground storage <br /> tank was initiated on October 9, 1992. This initial <br /> investigation consisted of a single soil boring, B-1, drilled to <br /> 60 feet. Laboratory analysis detected contamination beginning at <br /> a depth of 20 feet and continuing to 50 feet; however, field <br /> screening equipment detected contamination beginning at a depth <br /> of 10 feet and continuing to 60 feet. <br /> A groundwater investigation is warranted based on analytical <br /> results indicating soil contamination where ground water <br /> previously existed. Seasonal high ground water according to San <br /> Joaquin County Flood Control. District maps of Spring 1986 is 45- <br /> 50 feet below ground surface. A minimum of three monitoring <br /> wells will be required to determine groundwater gradient and to <br /> assess the condition of the groundwater; unless a nearby site <br /> with monitoring wells is available to determine the groundwater <br /> gradient. PHS/EHD is unaware of a nearby site which could <br /> provide groundwater gradient information. <br /> A Division of San Joaquin Counry Hcwth c'.Ue Scmces �� <br />