Laserfiche WebLink
URS 0 [RE!Emo <br /> October 20,2005 Ul, f 2 A 2005 <br /> ENVIRONMENT HEALTH <br /> Mr.Nuel Henderson PERMIT/SERVICES 2168 <br /> Unit IV-Site Mitigation 06a4 <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton,California 95202-2708 <br /> RE: Workplan for the Abandonment of a Groundwater Monitoring Well, Installation of an <br /> Interim Soil Vapor Extraction/Air Sparge Groundwater Treatment System, and <br /> Installation of Groundwater Monitoring Wells—Addendum III <br /> Former ARCO Station No. 2168 <br /> 441 West Charter Way <br /> Stockton, California 94570 <br /> Dear Mr.Henderson: <br /> On behalf of Atlantic Richfield Company (ARCO, a BP-affiliated company), URS Corporation <br /> Americas (URS)has prepared this addendum to the URS submitted Workplan for the Abandonment of a <br /> Groundwater Monitoring Well, Installation of an Interim Soil Vapor Extraction/Air Sparge Ground- <br /> water Treatment System, and Installation of Groundwater Monitoring Wells dated June 9, 2005 to <br /> present the following modification to the scope of work: <br /> SVE/AS Well Construction <br /> The seven foot seal that is proposed to separate the lower and upper sand packs was originally proposed <br /> to be constructed of a layer of bentonite, a layer of cement grout, then another layer of bentonite. URS <br /> is proposing to modify this construction by using bentonite chips for the entire seven-foot seal. <br /> If you have any questions or comments regarding this workplan addendum, please call Mr. Vernon <br /> Elarth at(916) 679-2299. <br /> Sincerely, \��ERED G, O <br /> URS Corporation Americas C2 �pN PAUL Qv, <br /> No. 7 20 <br /> Vernon Elarth,RG * Exp. 3� <br /> Project Manager FO��\P <br /> VE/gng OF CAVN <br /> cc: Ms. Lori Duncan, SCDER <br /> Mr. Kyle Christie,Atlantic Richfield Company <br /> Project File <br /> URS Corporation <br /> Crown Corporate Center <br /> 2870 Gateway Oaks Drive,Suite 300 <br /> Sacramento,CA 95833 <br /> Tel:916.679.2000 C:\SCOT'MRCO\SVE-AS SyslnsWP Addendum1doc <br /> Fax:916.679.2900 <br />