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0 • <br /> San Joaquin County <br /> °P`" Environmental Health Department DIRECTOR <br /> O Donna Heran,REHS <br /> Q - �i 600 East Main Street <br /> U < <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> �;�, � Robert McClellon,REHS <br /> ,_�. ' -- Jeff Carruesco, REHS, RDI <br /> • C'.. -:,��P Website: www.sjgov.org/ehd Kasey Foley, REHS <br /> F <br /> L o R Linda Turkatte, REHS <br /> Phone: (209) 468-3420 <br /> Fax: (209) 464.0138 <br /> September 23, 2010 <br /> Raymond Greer Albert &Wanda Veldstra <br /> Raymond Greer Construction 15634 Steinegul Road <br /> 1601 Cabrillo Court Escalon, CA 95320 <br /> Modesto, CA 95355 <br /> Subject: Former Greer Construction <br /> 15634 Steinegul Road <br /> Escalon, CA 95320 <br /> In correspondence dated June 23, 2010 the San Joaquin County Environmental Health <br /> Department (EHD) notified you that Feasibility Study (Study), dated June 11, 2010, submitted <br /> on your behalf by ATC Associates Inc. (ATC) had been reviewed by this agency, and requested <br /> submittal of an addendum to the Study to include the following: <br /> 1. A detailed evaluation of the possible causes for failure of the bench scale test, including <br /> the production of permanganate; and detailed contingency plans for hexavalent chrome, <br /> bromate and permanganate. <br /> 2. Calculations of contaminant mass and mass distribution to be addressed by the <br /> remediation. <br /> 3. More detailed evaluations of at least three remedial alternatives taking into consideration <br /> the remaining contaminant mass, specific site conditions, cost estimates and estimated <br /> time for cleanup. <br /> The Addendum is due for submittal to the EHD no later than October 29, 2010. If you have any <br /> questions please contact Lori Duncan at (209)468-0337, or by email at Iduncan@sjcehd.com. <br /> Sincerely, <br /> CorLIr <br /> Lori Duncan, REHS Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: James Barton, PG, CVRWQCB, 11020 Sun Center Drive #200, Rancho Cordova CA 95670 <br /> Jeanne Homsey, PE, ATC, 1117 Lone Palm Avenue Ste 201, Modesto CA 95351 <br />