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_ <br /> 5 <br />" ENVIRONMENTAL HEALTH DEPARTMENT <br /> &� Ii <br /> SANJOAQMCOUNTY <br /> Program Coordinators <br /> Donna K. Heron, R.E.H.S.Director 304 East Weber Avenue, Third Floor Carl Borgmaq R E.H.SIL A Laurie A. Cotulla, R.E.H.S. .Stockton, California 95202-2708 Mike Huggins, R.E.H.S ., R.D.I. <br /> Assistant Director Telephone: (209) 468-3420 Margaret Lagorio, R.E.H.S . <br /> Robert McClellan, R.E.H.S. <br /> Fax : (209) 464-0138 Jeff Carruesco, R.E.H.S. <br /> Website : www.sjgov.org/ehd/ Kasey Foley, R.E.H.S . <br /> VINCE ERARDI <br /> ERARDI VENTURES <br /> PO BOX 691000 tf j1Fb <br /> ti <br /> STOCKTON CA 95269 - 1000 `0/ i <br /> RE: ERARDI VENTURES SITE CODE: 1229 <br /> 715 NORTH HUNTER ST <br /> STOCKTON CA 95269 <br /> WORKPLAN: Additional Assessment & Interum Remediation Work Plan <br /> DATED: Tune 12, 2006 PREPARED BY: Advanced GeoEnvironmental. Inc. (AGE) <br /> APPROVED X <br /> DISAPPROVED ❑ <br /> ADDENDUM ❑ Submit by : <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN (H&S <br /> i <br /> 25296.10,subd. (c) (3).) : <br /> Install, operate, and maintain a dual-phase extraction (DPE) interim remediation system <br /> consisting of: 1) a 25-horsepower liquid-ring blower, 2) a thermal oxidizer for vapor <br /> treatment, 3) an air stripper and liquid phase activated carbon system for groundwater <br /> treatment, 4) trenching for the piping network, 5) the control panel, and 6) a chain-linked <br /> gated enclosure. <br /> Install off-site monitoring wells (MW-12 and MW-13) to approximately 40 feet bsg <br /> for lateral definition, on-site well MW-10 to approximately 60 feet bsg, and MW-11 to <br /> approximately 100 feet bsg for vertical definition. <br />{ COMMENTS AND CONDITIONS: <br /> Installation of the DPE system has priority over installation of monitoring wells. EHD <br /> recommends obtaining aH the relevant permits from appropriate agencies as soon as possible <br /> to expedite implementation of the interim remediation. Install and implement the DPE <br /> system by August 15, 2006. <br /> REASONS FOR DISAPPROVAL OF THE WORKPLAN (H&S 25296,10, <br /> subd. (C)(3) .) : <br /> None ( <br /> DATED July 5 2006 BYkff#reC ( S <br /> c: RWQCB, Central Valley Region — James L. L. Barton, PG <br /> c: Advanced GeoEnvitonmental, Inc. (AGE) — Tim Cuellar <br />