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I <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> > " , N <br /> Donna K. Heron, R.E.H.S. SAN JOAQUIN COUNTYProgram Coordinators <br /> " ( " <br /> Director 304 East Weber Avenue, Third Floor Carl Borgman, R.E.H.S. <br /> Laurie A. Cotulla, R.E.H.S. Stockton, California 95202-2708 Mike Huggins, R.E.H. S ., R.D.I. <br /> o'0<lFgaa�P Assistant DirectorTelephone : (209) 468-3420 Margaret Lagono, R.E.H.S. <br /> Robert McClellon, R.E.H.S. <br /> Fax: (209) 464-0138 Jeff Carruesco, R.E.H. S. <br /> Website: www.sjgov.org/ehd/ Rasey Foley, R.E.H.S . <br /> R ELLIS JR JAN 2 4 2007 <br /> ETHYL D ELLIS TRUSTEE ETAL <br /> 1991 W LINCOLN ROAD <br /> STOCKTON CA 95207 - 2462 <br /> RE: California Tank Lines, Inc. SITE CODE: 001095 <br /> 3105 South E1 Dorado Street <br /> Stockton, California 95206 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed California Tank <br /> Lines - Work Plan Addendum dated December 15 , 2006, prepared by Environeering, Inc. (EI) on <br /> your behalf. EHD requested this addendum to Work Plan Determination of the Extent of <br /> Contamination Affecting MW-4 to clarify items presented by EHD by letter dated October 13 , <br /> 2006, and address recommendations presented by EHD by letter dated October 13 , 2006, and by <br /> telephone on October 3 , 2006. <br /> In this work plan EI proposes the advancement of four cone penetration testing (CPT) borings to <br /> total depths of 125 feet below surface grade (bsg) and collection of soil and/or groundwater <br /> samples from adjacent twin borings. EI also proposes the collection of soil and groundwater <br /> samples from a proposed boring next to boring P-8 advanced as part of a separate investigation on <br /> the adjacent property at 3147 South El Dorado Street in July 2001 . <br /> EHD approves the advancement of the four proposed CPT borings, one located approximately <br /> thirty-five feet west/southwest of monitoring well MW-1, one located approximately thirty-five <br /> feet west of MW-2, one located approximately eighty-five feet north of MW-4, and one located <br /> approximately one hundred thirty-five feet northeast of MW-4. Using soil lithology generated <br /> during the advancement of the four CPT borings, groundwater samples will be collected from <br /> each saturated permeable interval from twinned borings advanced adjacent to the four CPT <br /> borings. <br /> EI proposes to collect soil samples from the first groundwater zone from the boreholes advanced <br /> adjacent to P-8 and adjacent to the proposed CPT boring located approximately eighty-five feet <br /> north of MW-4 and analyze the soil samples for percent organic carbon by weight and total <br /> effective porosity. EI also proposes to collect groundwater samples from these same two <br /> boreholes from the first groundwater zone and analyze the groundwater samples for dissolved <br /> oxygen, ferrous iron, nitrate, sulfate, total petroleum hydrocarbons as gasoline (TPH-g); total <br /> extractable petroleum hydrocarbons as diesel (TEPH-d); TEPH as motor oil (TEPH-mo); <br /> benzene, toluene, ethylbenzene, and total xylenes (BTEX); methyl tertiary-butyl ether (MTBE), <br /> ethyl tertiary-butyl ether (ETBE), tertiary amyl methyl ether (TAME), tertiary butyl alcohol <br /> (TBA), di-isopropyl ether (D1PE), 1 ,2-dichloroethane (1 ,2-DCA), and 1 ,2-dibromoethane (EDB). <br /> EHD approves the collection of these soil and groundwater samples for analysis as listed above. <br /> i <br />