Laserfiche WebLink
San Joaquin County DIRECTOR <br /> Donna Heran, REHS <br /> Environmental Health Department 1" ASSISTANT DIRECTOR <br /> a ` 2� 600 East Main Street Laurie Cotulla,REHS <br /> j ' Stockton, California 95202-3029 <br /> PROGRAM COORDINATORS <br /> Carl Bergman, REHS <br /> c., p Mike Huggins, REHS,RDI <br /> <iFOR�j\ <br /> Website: www.sjgov.org/ehd Margaret.Lagorio,REHS <br /> Phone: (209) 468-3420 Robert McClellon, REHS <br /> Fax: (209) 464-0138 Jeff Carruesco,REHS, RDI <br /> Kasey Foley,REHS <br /> Joe Toste Jr. MAR 1 8 2008 <br /> JT Storage <br /> 2480 Toste Road <br /> Tracy CA 95376 <br /> Subject: Curtiss Pontiac-Cadillac SITE CODE: 1877 <br /> 2450 Toste Road <br /> Tracy CA 95376 <br /> San Joaquin County Environmental Health Department (SJC/EHD) has reviewed Feasibility <br /> Study Report (Report) dated February 7, 2008, submitted on your behalf by Advanced <br /> GeoEnvironmental, Inc. (AGE) and has the following comments. <br /> The Report presents an evaluation of two remedial technologies for their potential to <br /> effectively remediate the remaining groundwater contamination at this site, and for cost <br /> effectiveness. The two methods compared were ozone infusion and groundwater extraction. <br /> A groundwater pumping test was conducted at the site in August 2000. From the results of <br /> this test combined with the issues relating to the implementation of groundwater extraction <br /> such as disposal of the extracted water, AGE has recommended that an 'in-situ' method of <br /> remediation, such as ozone infusion, would be more cost effective at your site. <br /> In the Report AGE proposes to use the results from a nearby contaminated site which has <br /> effectively remediated groundwater contamination with ozone infusion in lieu of a pilot test for <br /> your site. AGE states that the site stratigraphy at Curtis Pontiac typically possesses <br /> hydraulic conductivity values favorable for effective ozone infusion, and that the site <br /> stratigraphy is similar to that of the nearby contaminated site. The EHD agrees that ozone <br /> infusion appears to be a potentially cost effective technology to be considered for <br /> remediation of the groundwater contamination at your site. However, if the nearby site did <br /> not conduct a bench scale test, and the site was not monitored for mobilized metals, a bench <br /> scale test would have to be performed at your site before ozone infusion could be considered <br /> as a remedial alternative. Please proceed with submittal of an addendum to the Report <br /> addressing the issue of bench scale testing and/or a work plan to conduct a bench scale test <br /> no later than May 9, 2008. If you have any questions call Lori Duncan at (209) 468-0337. <br /> Sincerely, <br /> Lori Duncan, Senior REHS Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: James Barton, CVRWQCB, 11020 Sun Center Drive #200, Rancho Cordova, CA 95670 <br /> Lauren Cardinelli, AGE, 837 Shaw Avenue, Stockton CA 95215 <br />