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ti► <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> oAaU1N SAKI JOAQUIN COUNTY <br /> U11ir Supervisors <br /> ¢ Carl Borgrnan,R.E.H.S. <br /> Donna K.Hcran,R.E.H.S' 304 East Weber Avenue,Third Floor <br /> N: < l7irccra. Mike Huggins,R.E.H.S.,R.D.I. <br /> " ` A]Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> Prograi Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S. RobertMeClellon;R.E.H.S. <br /> progronr Manager Fax: {209)464-0138 Mark Barcellos,R.E.H.S. <br /> RECEIVED <br /> Lorre Islas / James Rinehart KO0 8 2005 <br /> City of Stockton <br /> 425 North El Dorado, Room 301 �READYY .L e, i,tist..a <br /> Stockton, CA 95202 <br /> RE: FORMER CARANDO MACHINE WORKS <br /> 420 NORTH MADISON <br /> STOCKTON,CA 95202 <br /> WORKPLAN: Remediation and Groundwater Workglan DATED: February 14,2003 <br /> PREPARED BY: Treadwell&Rollo,Inc. <br /> 1 APPROVED with Conditions(See Below) <br /> /ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN(H&S 25296.10, <br /> subd.(c)(3).): <br /> Remove contaminated soil iu an excavation 10 feet wide b3,25 feet long by 25 feet deep with an <br /> estimated volume of 230 cubic yards. One excavation volume of groundwater approximately 12,000 <br /> gallons will also be pumped and removed. The area of excavation is located to the north of the <br /> former underground storage tanks and the previous excavation of contaminated soil which took <br /> place at the above-referenced site in June 2004. <br /> COMMENTS AND CONDITIONS: <br /> 1. Your consultant has proposed this additional excavation of contaminated soil since future <br /> development at the site may permanently restrict access for additional investigation and <br /> remediation of the contamination. San]oaquin County Environmental Health Department <br /> (EHD)approves tlus proposal with the condition that it is understood that the cost may not <br /> be reimbursed by the State Underground Storage Tank Clean Up Fund(Fund). <br /> 2. The work plan recommended the placement of 800 pounds of oxygen release compound <br /> (CIRC)at the bottom of the proposed excavation as an additional remediation measure for the <br /> contaminated soil and groundwater. EHD does not approve the use of ORC since its <br /> effectiveness has not been shown at other sites in San Joaquin County. However,you may <br /> place ORC in the excavation with the understanding that the cost may not be reimbursed by <br /> the Fund. <br /> REASONS FOR DISAPPROVAL OF THE WORKP (H&S 25296.10,subd.(C)(3).): <br /> None <br /> DATED March 3-2005 BY F <br /> i <br /> C: Treadwell&Rollo— David Dixon,R� 1; - <br /> C: RWQCB,Central Valley Region-James L.L.Barton,RG <br /> V ' <br />