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T <br /> San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Donna Heran,REHS <br /> 2 ? 1868 East Hazelton Avenue <br /> PROGRAM COORDINATORS <br /> N: �II { Stockton, California 95205-6232 <br /> ;:L�.� :• Robert McClellon,REHS <br /> r: <br /> Jeff Carruesco, REHS,RDI <br /> Website: www.sjgov.org/ehd Kasey Foley,REHS <br /> <<F o Ra Linda Turkatte,REHS <br /> Phone: (209) 468-3420 Rodney Estrada,REHS <br /> Fax: (209)464-0138 Adrienne Ellsaesser,REHS <br /> March 6, 2013 <br /> Mrs. Margaret A. Marci <br /> 20 Mobile Lane <br /> Crescent City, California 95531-8409 <br /> Subject: Marci Property LOC Case No.: 2015 <br /> 2969 Loomis Road GeoTracker No.: T0607700057 <br /> Stockton, California 95205 <br /> The San Joaquin County Environmental Health Department (EHD) has received a No Further <br /> Action Required Concurrence letter from the Central Valley Regional Water Quality Control <br /> Board (CVRWQCB), dated 26 February 2013, for the above-referenced site. It is now <br /> necessary to plan and execute the destruction of all wells installed as part of your site <br /> investigation and remedial action, as the EHD will not issue a Case Closure Letter for this site <br /> until the wells have been properly destroyed and all onsite waste material has been removed <br /> and properly disposed. The wells are to be destroyed within 90 days of the date of this letter, or <br /> current analytical data for groundwater collected quarterly from the wells shall be submitted for <br /> review 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 /> 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); the <br /> cleared borehole is then to be sealed with neat cement by pressure grouting from the <br /> bottom upward to a depth of three to five feet below grade. <br /> • All wells with unknown construction and/or located in an area 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 is <br /> then to be sealed with neat cernent by pressure grouting from the bottom upward to a <br /> depth of three to five feet below grade. <br /> • 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 /> well casing in place. The top three feet or more of the well shall be drilled out with an <br />