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San Joaquin County <br /> DIRECTOR <br /> PoU.�N Environmental Health Department Donna Heran,REHS' <br /> 1868 East Hazelton Avenue <br /> PROGRAM COORDINATORS <br /> N: ... :<. Stockton, California 95205-623. 2 RobertMcC[ellon, REHS <br /> z z Jeff Carruesco,REHS,RDI <br /> •' Kasey Foley,REHS <br /> cQ. .a�� Website: www.sjgov.org/ehd Linda Turkatte,REHS <br /> o, Phone: (209)468-3420 <br /> Fax: (209)464-0138 1 <br /> May 18, 2012 <br /> Ms. Jennifer Sedlachek Mr..'Pat H. and Ms. Kathleen M. Meeks <br /> ExxonMobil Environmental Services Company 783 Los Flores Ct. <br /> 4096 Piedmont Avenue#194 Galt, California 95632 <br /> Oakland, California 94611 - <br /> i <br /> Subject: Former Mobil Service Station 99ACA (former Meeks RV) LOP Case#:508378 <br /> 25355 North Highway 99 <br /> Acampo, California 95220 <br /> The San Joaquin County Environmental Health Department (EHD) has received a No Further <br /> r° ua <br /> lit Control <br /> Regional Wate Q <br /> Action Required Concurrence letter from. the Central Valley Rego Y <br /> Board (CVRWQCB), dated 27 April 2012, for the above-referenced site. It is now necessary to <br /> plan and execute the destruct ion;.of all wells installed as part.of your site investigation and <br /> remedial action, as the EHD will not issue a Case Closure Getter for this site until the wells have <br /> been properly destroyed and- all onsite wastematerial has been removed and properly <br /> disposed. The wells are to be destroyed within 90 days of the date of this letter, or current <br /> analytical data for groundwater`co'llected quarterly from the wells shall be submitted for review <br /> F until the wells have been properly destroyed: <br /> Please submit a scope of work proposal that details the conditions and construction of the wells <br /> I- and the methods and materials to be used to destroy them. To be issued a well destruction <br /> permit, the proposal must address the.concerns of the EHD and the San Joaquin County Well <br /> Standards requirements, such as: <br /> Wells that have laboratory data from the last sampling event that demonstrate the <br /> presence of any contaminants of concern are to, be destroyed by removing all the <br /> - contents of the well (conductor casing, well casing, screen, filter pack, grout sealant); <br /> the cleared borehole is`then:to be sealed with neat cement by pressure grouting from <br /> the bottom upward to a depth of three to five feet below grade. <br /> O - All wells with unknown-construction and/or located in anarea of known or suspected <br /> area of contamination are to be destroyed by removing "all the contents of the well <br /> (conductor casing, well casing, screen, filter pack, grout sealant); the cleared borehole <br /> is then to be sealed with neat cement by pressure grouting from the bottom upward to a <br /> depth of three to five feet below grade. <br /> a Wells that have laboratory data from the last sampling event that report non-detectable <br />` concentrations of contaminants of concern and with acceptable laboratory detection <br /> limits may be destroyed by pressure grouting from the bottom upward, while leaving the <br />