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C2 ARCADiS ARCADIS U.S.,Inc. <br /> 1900 Powell Street <br /> 12th Floor <br /> Emeryville <br /> California 94608 <br /> MEMO Tel 510.652.4500 <br /> To Copies: Fas 510.652.4906 <br /> Michael Infuma <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton, California 65202-3029 <br /> (209)468-3454 <br /> From: <br /> Katrin Schliewen <br /> Date: ARCADIS Project No.: <br /> May 5,2010 EM006750.0009 <br /> Subject: <br /> Additional information regarding the drilling methodology for the proposed soil gas <br /> sampling at Lincoln Center, Stockton, CA <br /> Dear Mr. Infuma, <br /> Please find enclosed three revised permit applications for drilling 7 temporary soil borings for soil gas <br /> sampling at the Lincoln Center in Stockton, California.Attached are the following items: <br /> a. Three completed well permit applications. Note that the associated permit application fees have <br /> been sent to the SJCEHD separately. <br /> b. Site plan showing the proposed drilling locations SGA through SG-7. <br /> c. Assessor's map for Book-Page number 097-41. <br /> d. Work Plan titled"Proposed Closure Plan for Phase II (Soil-Vapor Extraction)and Phase IV(Air <br /> and Ozone Sparging)Interim Remedial Actions"and dated August 28,2009. <br /> e. RWQCB work plan approval letter. <br /> f. Soil gas sampling procedure narrative and a description of the drill rod and sample tubing set up. <br /> Below I have copied your itemized list of technical comments(in bold italics)as listed in your email on <br /> May 3, 2010, and have provided the requested detail and information below each of your comments, as <br /> well as in the attached documents and/or revised permit applications. Please find attached a soil gas <br /> sampling procedure narrafive and a description and photos of the drill rod and sample tubing set up. <br /> jVecF,NaMe,pe615oVecM1nidkve4aa Niuleamts�eleenllvppemilYev pamit app pacFape 15+10IMimw_sjmMteCicpmenb OSWfodac Page: <br /> 113 <br />