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i <br /> E-N -N N TA L HEAL TE EPARTNIE T <br /> pUiN <br /> S_AN JOAQUIN COUNT <br /> Unit Supervisors <br /> Donna K.Heran,R.E.H.S. <br /> Director 304 East Weber Avenue, Third Floor Carl Boman, RE.H.S. <br /> "-{ AI Olsen,R .H.S. Stockton, California 95202-2708 Mike Huggins, RE.H.S., R.D.I..E <br /> ' �i .:. ,,�'•"P Pro am Mana er Douglas W. Wilson, RE.KS. <br /> Q�IFCA�` g Telephone: (209) 468-3420 Margaret Lagorio, R_E.H.S. <br /> Laurie A. Cotulla,RE.H.S. <br /> Fax: (209) 464-0138 Robert McClellan, R.E.H.S. <br /> Program Manager <br /> Mark Barcellos, R.E.H.S. <br /> i <br /> VINCE. ERAR'DI <br /> ERARDI V311TUREs AN 5 2002 <br /> PO BOX 691000 <br /> STOCKTON CA. 95269 -1000 <br /> ERARDI VENT11RES Site Code: 1229 <br /> 715 N. HUNTER ST. <br /> STOCKTON CA 95269 <br /> I <br /> San Joaquin County Environmental Health Department (ER D) has reviewed "Preliminary Investigation and <br /> Evaluation Report," dated March 20, 2002, prepared by Advanced GeoEnvironmental,Inc. on your behalf. <br /> The lateral and vertical extent of soil and groundwater contamination remains undefined by this scope of <br /> work. Analysis of grab ,groundwater samples show total pet <br /> tolerm hydrocarbons as gasoline (TPH-g) as <br /> high as 5,400,000 micrograms per liter and benzene as high as 210,000 micrograms per liter. Groundwater <br /> - contamination of this extent warrants an extensive well network and possible interim remedial action. <br /> t— A work plan to define the lateral and vertical extent of soil and groundwater contamination, installation of <br /> monitoring wells, and a complete well and conduit survey, should be submitted to EHD"by May 28,2002. _ <br /> Please contact Sam Savig, •$HS at (209) 468-3453 if you have questions regarding this letter. <br /> Donna Heran, PEHS, Director <br /> Environmental Health Department <br /> L_ <br /> Sam Savig, EHS Mazgare�REHS " <br /> "i Site Mitigation Unit IV Supervisor LOP/Unit IV <br /> cc: Marty Hartzell-CVRWQCB <br /> v,4nan Millman Advanced GeoEnviroarmental, Inc. <br /> i <br /> i <br /> i <br />