Laserfiche WebLink
• SEC www.secor.com <br /> INTERNATIONAL 3017 Kilgore Road,Suite 100 <br /> S E C O R INCORPORATED Rancho Cordova,CA 95670 <br /> 916-861-0400 TEL <br /> 916-861-0430 FAX <br /> April 10, 2006 <br /> Ms. Lori Duncan u ECEF1 // D <br /> San Joaquin County <br /> Environmental Health Department AFI, 12 1606 <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 ENVIRONMIDv I IiF_ALTH <br /> RE: Vapor Wells Destroyed During Site Construction PERMIT/SERVICES <br /> Former ARCO Station #2168 <br /> 441 W. Charter Way, Stockton <br /> SECOR Project No.: 77BP.VALEY.06 <br /> Dear Ms. Duncan: <br /> SECOR International, Inc. (SECOR) has prepared this letter on behalf of Atlantic Richfield <br /> Company (ARCO), a BP Affiliated Company, to inform your office that during construction <br /> of a car wash facility at the site referenced above three vapor wells were covered over and <br /> appear to be lost. The purpose of this letter is to outline the actions taken to protect and <br /> locate these vapor wells during the construction at this site. <br /> During preconstruction activities late last year, URS Corporation (URS) abandoned several <br /> wells and lowered the remaining wells to approximately two feet below ground surface (bgs) <br /> in an attempt to prevent the wells from being damaged during construction of the car wash <br /> at this location. The top of the wells were capped with polyvinyl chloride (PVC) caps and a <br /> 2 foot by 2 foot steel plates were placed over the wells at the surface. The steel plates <br /> were added to provide additional well protection and to allow the use of a metal detector in <br /> case the wells became buried. The attached figure shows the location of the wells at this <br /> site. <br /> During construction, the contractor responsible for construction of the car wash raised the <br /> elevation in the southern portion of the site by approximately five feet. Vapor wells VW-8, <br /> VW-10, and VW-11 are now under approximately seven feet of soil. URS has made <br /> several attempts with a backhoe and a metal detector to locate the missing vapor wells, <br /> however, these wells have not been found. URS is continuing to attempt to locate the <br /> missing wells, however, the recent weather conditions have delayed the digging at this site. <br /> In the event that these wells cannot be locate there are no plans replace these vapor wells <br /> and the wells will be considered lost. <br /> Sincerely, <br /> SECOR International Incorporated <br /> Rusty Benkosky P.E. <br /> Principal Engin er <br /> cc: Mr. Don Pratt, Atlantic Richfield Company <br /> Mr. James Barton, RWQCB — Central Valley Region <br /> Mr. Vernon Elarth, URS Corporation <br /> I:\BP-ARCO\BP Valley Portfolio\2168\Correspondence\2168 Letter to County re lost wells-final.doc <br />