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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Donna Heran, REHS <br /> 600 East Main Street <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco, REHS, RDI <br /> Website: www.sjgov.org/ehd Kasey Foley, REHS <br /> o a Phone: (209)468-3420 Linda Turkatte, REHS <br /> Fax: (209)464-0138 <br /> August 16, 2011 <br /> City of Manteca <br /> Manteca City Library Park Expansion <br /> 245 N Union Street, Manteca, CA 95337 <br /> Kevin Fant <br /> Subject: 320 W Center Street, Manteca, Ca 95337 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the analytical <br /> results of the soil samples taken from beneath the underground storage tank(s) that were <br /> removed from the above subject site on March 4, 2011. The analytical results from in-situ soil <br /> samples collected from the excavation showed the maximum concentration of total petroleum <br /> hydrocarbons quantified as diesel (TPHd) to be 16 milligrams per kilogram (mg/kg), well below <br /> the 100 mg/kg allowable for your site conditions. In addition, the concentrations of the five <br /> metals cadmium, chromium, lead nickel and zinc were not significantly elevated. The data is <br /> consistent with low-risk conditions. <br /> This letter confirms the completion of the tank removal investigation for the underground storage <br /> tank#TA0520123. With the provision that the information provided to this agency was accurate <br /> and representative of existing conditions, it is our position that no further action is required at <br /> this time. <br /> Please be advised that this letter does not relieve you of any liability under the California Health <br /> and Safety Code or Water Code for past, present, or future operations at the site. Nor does it <br /> relieve you of the responsibility to clean up existing, additional or previously unidentified <br /> conditions at the site which cause or threaten to cause pollution or nuisance or otherwise pose a <br /> threat to water quality or public health. <br /> Additionally, be advised that changes in the present or proposed use of the site may require <br /> further site characterization and mitigation activity. It is the property owner's responsibility to <br /> notify this agency of any changes in report content, future contamination findings or site usage. <br /> If you have any questions, contact Muniappa Naidu, REHS, at (209) 468-3439. <br /> Nuel Henderson, PG <br /> Engineering Geologist <br />