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I <br /> Son Joaquin County <br /> oPa N �Environmental Health De artment DIRECTOR�. Donna Heran,RENS <br /> 600 East Main Street <br /> N < Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> R ,,� Robert McClellon,REHS <br /> Jeff Carruesco,REHS,RDI <br /> ` . Kasey Foley,REHS <br /> r'a•... -�;,a Website: www.sjgov.org/ehd <br /> Linda 7urkatte,REHS <br /> Phone: (209)468-3420 <br /> Fax- (209)464-0138 <br /> April 21, 2011 <br /> Mr. Amrit Grewal <br /> Grewal's Market <br /> 4100 East Fremont Street <br /> Stockton, California 95215 <br /> Subject: Grewal's Market <br /> 4100 East Fremont Street <br /> Stockton, CA 95215 <br /> Dear Mr. Grewal: <br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed <br /> Well Destruction Work Plan (work plan), dated 19 April 2011, prepared by your consulting firm <br /> Advanced GeoEnvironmental, Inc. (AGE) for the above-referenced site. The work plan was <br /> i submitted in response to the EHD letter dated 16 March 2011 directing the submittal of a work <br /> proposal that would detail the methods and materials to be used to destroy the monitoring wells <br /> at your site. <br /> t In the work plan, AGE proposes to drill out monitoring wells MW-2 and MW-3, and destroy <br /> MW-1 and MW-4 by pressure grouting techniques. The EHD has reviewed the groundwater <br /> analytical data from the last recorded sampling event at your site on 12 November 2008. 1,2- <br /> Dichloroethane (1,2-DCA) was detected at 22 micrograms per liter (pg/L) in groundwater <br /> samples collected from MW-4. . Noting that 1,2-DCA has historically been detected in <br /> groundwater collected from MW-4, the EHD directs that this well also be destroyed by drilling <br /> out the contents (well casing, screen, filter pack, and annular seal). Monitoring well MW-1 is the <br /> only well that may be destroyed by leaving the casing in place and pressure grouting. Instead <br /> of applying a thick grout mixture under approximately 10-15 pounds per square inch (psi) of <br /> pressure, use a thin grout mixture so that the grout can penetrate the slits in the screened <br /> interval of MW-4. Also contain any displaced water generated during the well destructions. The <br /> EHD approves the work plan with these revisions. <br /> If you have any questions, please.contact Vicki McCartney by telephone at (209) 468-9852 or <br /> by email at vmccartnesicehd.cc;rn. <br />