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TH SERICESPUBL HEAL <br /> CG <br /> SAN JOAQUIN COUNTY :e <br /> JOGI KHANNA'N{.D..N9.P.H. <br /> Health Officer • �4, ��P � <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) • Stockton, California 95201 <br /> .(209) 468.3400 <br /> LES CALKiNS JUN 1 7 1992 <br /> P O BOX 160 t F <br /> LODI CA 95241 cc- oIY <br /> c <br /> RE: Les Calkins Trucking SITE CODE: 1633 <br /> 19051 N. Hwy 99 <br /> Acampo, CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has reviewed <br /> activities to date at the above referenced facility and the "UST Pit Site Investigation Plan" dated May 6, 1992 <br /> and an amendment dated June 1, 1992 ,prepared by T&T Earth Services. <br /> I <br /> On June 1, 1992 a meeting was held at PHS/EHD's,,office with Tim K. Smith, representing T & T Earth <br /> Services, Margaret Lagorio, Senior REHS, and Michael Collins, EHS, representing PHS/EHD. <br /> The following items'i`were discussed at the meeting: <br /> 1) Watering of the underground tank excavation may have driven contamination down into the <br /> groundwater. <br /> 2) Seasonal high groundwater (according to "San Joaquin County Flood Control Maps") at the <br /> site was about 35-40 feet in August 1986. <br /> 3) Information from soil borings drilled to 15 feet below ground surface,(BGS) would be <br /> insufficient. PHS/EHD recommends borings be drilled to at least 35 feet BGS. <br /> 4) Since a 550 gallon underground storage tank was removed from this site that had contained <br /> leaded gas, soil samples should be analyzed for Benzene, Toluene, Ethyl-benzene, Xylene, <br /> total petroleum hydrocarbons (TPH) as gasoline, total Lead, Ethyl dibromide (EDB) and <br /> TPH as diesel. <br /> 5) The work plan and amendment submitted lacked important information. A work plan should <br /> detail exact work to be performed. ' <br /> 6) A groundwater investigation will be required if contamination is found 30 feet or more below <br /> ground surface. <br /> If you have any questions, contact Michael Collins, EHS, of my staff at (209) 468-0338. <br /> Jogi Khanna, M.D., M.P.H. <br /> ealth O r � <br /> Laurie A. tulla XEHS, <br /> rograrn Manager <br /> Environmental Health Division <br /> LAC/MC:lb E <br /> C* T & T Earth Services - Tim Smith <br /> P.O. Box 1618 <br /> A Division of San Joaquin county Health Care Services <br /> ill <br /> i <br />