SITE INFORMATION AND CORRESPONDENCE (3)

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i San Joaquin County Environmental Health Department DIRECTOR �o:'-_„1�•.'co Donna Heran,RENS r. ? 1868 East Hazelton Avenue Stockton, California 95205-6232 PROGRAM COORDINATORS Robert McClellon,REHS • Jeff Carruesco,REHS,RDI Kasey Foley,REHS Website: www.sjgov.org/ehd Linda Turkatte,REHS Phone: (209)468-3420 Fax: (209)464-0138 October 29, 2012 Brian Waite Sandra Yocoub Chevron Environmental Management Co. Romeo Yocoub 6101 Bollinger Canyon Road, Room 3652_ 4960 South Gilbert Rd., Ste. 1-147 San Ramon, CA 94583 Chandler, AZ 85249 Subject: Low Price Auto Glass/Former Texaco Chevron Site ID 309075 3978 S. Hwy 99 South Frontage Road Stockton, CA 95205 The San Joaquin County Environmental Health Department (EHD) has received a No Further Action Required Concurrence.letter from the Central Valley Regional Water Quality Control Board (CVRWQCB) dated September 20, 2012 for the above subject site. It is now necessary to plan the destruction of all wells installed as part of your site investigation and remedial action, as the EHD will not issue a Case Closure Letter for this site until the wells have been properly destroyed'and all onsite waste material have been removed and properly disposed of. The wells are to be destroyed within 90 days of the date of this letter. Please submit a work plan that details the conditions and construction, of the wells and the methods and materials to be used to destroy them. To be issued a well destruction permit the proposal must comply with the San Joaquin County Well Standards requirements, including: • Wells that have laboratory data from the last groundwater sampling event that demonstrate the presence of any contaminants of concern are to be destroyed by removing all the contents of the original borehole (conductor casing, well casing, screen, filter pack, grout sealant); the cleared borehole is then to be sealed with neat cement by grouting from the bottom up to a depth of three feet below grade. • All wells with unknown construction and/or located in an area of known contamination are to be destroyed by removing all the contents of the original borehole as described above; the cleared borehole is then to be sealed with neat cement by grouting from the bottom.up to a depth of three feet below grade. • Wells that have laboratory data from the last sampling event that report non-detectable concentrations of contaminants of concern, with acceptable laboratory detection limits, may be destroyed by pressure grouting with neat cement from the bottom up while