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San Joaquin County <br /> Qu'"' Environmental Health Department DIRECTOR <br /> o°�•� c <br /> �. ' .o <br /> 2..� .G Linda Turkatte,REHS <br /> 1868 East Hazelton Avenue <br /> Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco, REHS, RDI <br /> c4• ��c Website: www.sjgov.org/ehd Kasey Foley, REHS <br /> L F o R Rodney Estrada, REHS <br /> Phone: (209)468-3420 Adrienne Ellsaesser,REHS <br /> Fax: (209) 464-0138 <br /> June 19, 2015 <br /> Mr. Weldon Church <br /> 1958 Yosemite Road <br /> Berkeley, California 94707 <br /> Subject: Weldon Church Property <br /> 104 West Beverly Place <br /> Tracy, California 95376 <br /> Dear Mr. Church: <br /> The California State Water Resources Control Board (State Water Board) has determined that <br /> the above-referenced site meets the criteria specified in the State Water Board's Low-Threat <br /> Underground Storage Tank Case Closure Policy (Low-threat Closure Policy), and has notified <br /> appropriate agencies and recipients of the pending case closure and of their opportunity to <br /> submit comments or questions regarding the pending closure. The sixty-day public <br /> participation period ended 16 May 2015. <br /> It is necessary now to plan and prepare to execute the destruction of all wells installed as part <br /> of the site investigation and remedial action. Please submit a scope of work proposal that <br /> details the conditions and construction of the wells and the methods and materials to be used <br /> to destroy them. To be issued a well destruction permit, the proposal must address the <br /> concerns of the San Joaquin County Environmental Health Department (EHD) and the San <br /> Joaquin County Well 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 remaining in groundwater are to be <br /> destroyed by removing all the contents of the well [well casing, screen, filter pack, <br /> grout sealant (except steel conductor casing); the cleared borehole is then to be <br /> sealed with neat cement from the bottom upward to the depth of three to five feet <br /> below grade. <br /> • All wells with unknown construction and/or located in an area of known or suspected <br /> contamination are to be destroyed by removing all the contents of the well [well casing, <br /> screen, filter pack, grout sealant (except steel conductor casing)]; the cleared borehole <br /> is then to be sealed with neat cement from the bottom upward to the depth of three to <br /> five feet below grade. <br /> • Wells that have laboratory data from the last groundwater sampling event that report <br /> non-detectable concentrations of contaminants of concern and with acceptable <br /> laboratory detection limits, and are not in an area of known or suspected soil <br /> contamination, may be destroyed by pressure grouting from the bottom upward, while <br />