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San Joaquin County DIRECTOR <br /> °U!" Environmental Health Department Donna Heran,REHS <br /> roc <br /> �G ASSISTANT DIRECTOR <br /> A , :? 600 East Main Street Laurie Cotulla, REHS <br /> F ` Stockton, California 95202-3029 <br /> PROGRAM COORDINATORS <br /> i Carl Borgman, REHS <br /> 6R'��P Website: www.sjgov.Org/ehd Mike Huggins,REHS,RDI <br /> Margaret Lagorio,REHS <br /> M <br /> Phone: (209)468-3420 Robert McClellon,REHS <br /> Fax: (209)464-0138 Jeff Carruesco, REHS, RDI <br /> Kasey Foley, REHS <br /> I <br /> SHELL OIL PRODUCTS US <br /> DENIS L BROWN SEP 2 5 2007 <br /> 20945 S WILMINGTON AVENUE <br /> CARSON CA 90810 <br /> RE: Ripon Shell Service Station SITE CODE: 506186 ` <br /> 341 East Main Street RO: 445 <br /> Ripon, California <br /> San Joaquin County Environmental Health Department (EHD) has reviewed Well Destruction <br /> Work Plan dated September 13, 2007, and Transmittal (letter) dated September 12, 2007, <br /> prepared' and submitted by Conestoga-Rovers and Associates (CRA) .on your behalf for the <br /> above-referenced site. In the work plan and letter CRA proposes to pressure grout the eleven on- <br /> and off-site wells by first removing the wellhead vault and excavating approximately 2 feet in <br /> diameter around the well casing to a depth of approximately three feet below surface grade using <br /> an Airknife. Once the well casing is grouted using.a tremie pipe, the casing will be pressurized <br /> for approximately 5 to 10 minutes; then approximately 2.5 feet of well casing will be removed <br /> allowing 6 inches of casing to remain extending above the bottom of the excavation. Additional <br /> grout will be placed in the casing and allowed to spill over into the excavation and fill the hole at <br /> least six inches above the remaining well casing. EHD approves the work plan as described. <br /> EHD has received one permit application for well destructions onsite and a check for $120 for i <br /> permit fees for well destructions both on- and off-site. However, EHD still needs a permit <br /> application for the destruction of off-site wells, MW-6A and MW-6B, along with an <br /> encroachment permit from the City of Ripon. EHD understands the fieldwork is scheduled for <br /> October 8-12, 2007, and will issue the permits once EHD receives the additional permit <br /> application and a copy of the encroachment permit. <br /> If you have any questions, please contact Vicki McCartney at (209) 468-9852 or by email at <br /> II <br /> vmccartney@sjcehd.com. <br /> Donna Heran,REHS,Director <br /> Environmental Health Department <br /> Victoria L.McCartney, Senior REHS Margaret Lagorio,REHS <br /> LOP/Site Mitigation Unit IV Program Coordinator Unit IV <br /> c: Joe W.Neely, PG—Conestoga-Rovers&Asso. <br /> James L.L. Barton, PG—CVRWQCB <br /> Matt Machado—City of Ripon <br /> Jeanne Zolezzi—Herum, Crabtree, Brown ! <br />� I, <br />