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San Joaquin County Qu.1N Environmental Health Department P DIRECTOR Donna Heran, REHS 600 East Main Street Stockton, California 95202-3029 PROGRAM COORDINATORS ' Robert MCClellon,RENS Jeff Carruesco,RENS,Rol c4 i o�a�P Website: www.sjgov.org/ehd Kasey Foley, RENS Phone: (209) 468-3420 Linda Turkatte,RENS Fax: (209)464-0138 March 16, 2011 Mr. Amrit Grewal Grewal's Market 4100 East Fremont Street Stockton, California 95215 Subject: Grewal's Market LOP Case #t_ 1574 4100 East Fremont Street Stockton, CA 95215 Dear Mr. Grewal: The San Joaquin County Environmental Health Department (EHD) has received No Further Action Required Concurrence from the Central Valley Regional Water Quality Control Board (CVRWQCB), by letter dated 10 March 2011. It is now necessary to plan and execute the destruction of all wells installed as part of your site investigation and remedial action, as the EHD will not issue a No Further Action (NFA) letter for this site until the wells have been properly destroyed and all onsite waste materials have been removed and properly disposed. The wells are to be destroyed within 90 days of date of this letter, or current analytical data for groundwater collected quarterly from the wells shall be submitted for review until such time that the wells has been properly destroyed. Please submit a scope of work proposal that details the methods and materials to be used to destroy the wells. To be issued a well destruction permit, the proposal must address the concerns and requirements of the EHD listed below. • Wells that have laboratory data from the last sampling event that demonstrate the presence of any contaminants of concern are to be destroyed by removing the contents (well casing, screen, filter pack, and annular seal); the cleared borehole is then to be sealed with neat cement by pressure grouting from the bottom upward to a depth of three to five feet below surface grade (bsg). • All wells located within the area of known soil contamination are to be destroyed by removing the contents (well casing, screen, filter pack, and annular seal), the cleared borehole is then to be sealed with neat cement by pressure grouting from the bottom upward to a depth of three to five feet bsg. • Wells that have laboratory data from the last sampling event that report non-detectable concentrations of contaminants of concern and with acceptable laboratory detection limits, may be destroyed by pressure grouting while leaving the well casing in place.