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O <br /> EAST BAY <br /> WALTEROP <br /> MUNICIPAL UTILITY DISTRICT MANAGER <br /> WASTEWATER r?a. MANAGER OF WASTEWATER <br /> c' ,y11 'x'a <br /> February 6 , 1991 <br /> Ms..-Diane M. Hinson, REHS <br /> Environmental Health Division <br /> San Joaquin County, Public Health Services <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Dear Ms . Hinson: <br /> Re: EBMUD Stockton- Center - Local Oversight Program Site Code 1169 <br /> 1804 West MainStreet, Stockton <br /> Attached are the results - of groundwater monitoring sampling done <br /> on December 28 1990, and a site plan showing the numbered well <br /> locations . The lab results are on Curtis & Tompkins, Ltd. <br /> letterhead. Also attached are a chain of custody and monitoring <br /> well -purg-ing and sampling data. <br /> Samples collected from MW-1 contained detectable levels of Total <br /> Petroleum Hydrocarbons (TPH) in both the purge water and the ground <br /> water _ .samples. Samples collected from MW-2 and MW-3 were below <br /> detect-ion. Detectable levels of Benzene, Toluene, Ethyl Benzene, <br /> and Xylenes were also found in MW-1 . <br /> The District is retaining Roy F. Weston, Inc . to install four <br /> additional monitoring wells and conduct additional sampling at <br /> Stockton Center . Roy F. Weston, Inc . will submit a Health and <br /> Safety Plan and any changes to the work plan previously submitted <br /> by Kleinfelder for work planned at this site . <br /> If you- have any questions regarding this report, please contact me <br /> at ( 415 ) 465-3700, extension 121 . <br /> Sincerely, <br /> THOMAS C. PAULSON <br /> Wastewater Control Representative <br /> Source Control Division <br /> TCP tcp <br /> Attachments <br /> cc: Gordon L. Boggs, CVRWQCB <br /> Robert M. Sengebush, Roy F. Weston, Inc . <br /> 2130ADELINE STREET.OAKLAND CA 94607.(415)465-3700 <br /> BOARD OF DIRECTORS SANFORD M.SKAGGS.MARY C.WARREN.HELEN BURKE <br /> JOHN M.GIOIA.WALTER R.McLEAN.NANCYJ.NADEL.KENNETH H SIMMONS <br />