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l SECOR v .Secor.com <br /> C ® INTERNATIONAL 3017 Kilgore Road, Suite '100 <br /> C INCORPORATED Rancho Cordova, CA 95670 <br /> 916-861 -0400 TEL <br /> 916-661 -0430 FAX <br /> March 20, 2006 <br /> Mr. Michael Infurna io� lME 'vRED <br /> San Joaquin County Environmental Health Department RIME(� <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202-3420 PAR 1 2006 <br /> ENVIRONiVENI HEALTH <br /> Re: Arco Station #2130 PERNRAP SERVICES <br /> 7906 N . EI Dorado Street <br /> Stockton , CA 95210 <br /> Dear Mr. Infurna: <br /> SECOR International Inc. (SECOR) assumed the responsibility as the primary consultant for ARCO <br /> Station No. 2130 as of March 1 , 2006. We received your recent letter dated February 21 , 2006 <br /> requesting reactivation/reinstallation of the IAS/SVE system at the site. <br /> To comply with your request SECOR conducted a site visit with URS Corporation , who continues to <br /> oversee the field activities, on March 10, 2006 . During the site visit it was concluded that the system <br /> at Station 2130 is no longer operational and the air permit has expired . In addition , SECOR <br /> conducted a review of the available data for this site. During our review it was discovered that all of <br /> the monitoring well and vapor extraction well screens have become submerged . Therefore, we do <br /> not have an accurate picture of the remaining contamination at this site. We are currently working <br /> on developing a work plan for the installation of new wgils so that we may better examine the <br /> possible remedial options at this site. However, given that the existing system is not operational, the <br /> monitoring wells and vapor wells have become submerged , and the air permits are expired the <br /> system will not be reactivated by the March 20 , 2006 date specified in your letter. Therefore, <br /> SECORrequests an extension until a rin 114 0� 06 to prepare a work plan for the installation of new <br /> wells and our plan for this site. <br /> If you have any questions regarding this report, please contact me at (916) 861 -0400 x 229, <br /> Sincerely, <br /> SECOR International, Incorporated oQgoFESS/a, , <br /> 4E ko �Fy <br /> D-r <br /> � � N0. C 058399 <br />{ Rusty Benkosky, . E . Evo. 1T 3f � <br /> Principal Engineer sry CMl aP <br />{ <br /> OFC40 <br /> cc: Mr. Don Pratt, Atlantic Richfield Company <br /> j Mr. Mark Owens, SWRCB <br /> Mr. James Barton , CVRWQCB <br />