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Chevron <br /> M5 Chevron <br />• <br /> Chevron Products Company <br /> February 27 1997 6001 Bollinger Canyon Road <br /> Building L <br /> San Ramon CA 94583 <br /> PO Box 6004 <br /> San Ramon CA 94583 0904 <br /> Mr Ron Rowe Marketing—Sales West <br /> San Joaquin County Public Health Services Phone 510 842-9500 <br /> P O Bax 388 <br /> Stockton, CA 95201-0388 <br /> Re Chevron Station# 9-8264, 3775 Tracv Blvd , Tracy, CA <br /> Attached Groundwater Monitoring Report(Blaine Tech, 1219196) <br /> Dear Mr Rowe <br /> Attached you will find a report dated December 9, 1996 that was prepared by Chevron's consultant, <br /> Blaine Tech Services, Inc (Blaine Tech),to describe the results of groundwater monitoring that was <br /> performed at the subject site on November 5, 1996 <br /> In November Blame Tech gauged and sampled all four site-related monitoring wells The measured <br /> direction of groundwater flow was generally toward the northeast Groundwater samples from each well <br /> were analyzed for the presence of TPHGas, BTEX constituents, TPHDiesel, and MTBE In addition, <br /> samples collected from well MW-1 were analyzed for total oil and grease, soluble metals, semi-volatile <br /> organic compounds (SVOC's), and halogenated volatile organic compounds (HVOC's) <br /> There were again, no motor fuel hydrocarbons detected at any of the site wells There was MTBE detected <br /> at wells MW-3 and MW-4 at levels of 250 ppb and 33 ppb, respectively MTBE was not present at wells <br /> MW-1 and MW-2 Samples from well MW-1 did not detect HVOC's, SVOC's or total oil and grease <br /> Soluble Zinc was detected at 22 ppb in groundwater at well MW-1 The dissolved levels of Zinc measured <br /> at this well probably reflect naturally occurring background levels All other soluble metals were non- <br /> detect <br /> If you have any questions or comments, please contact me directly at(510) 842-8695 <br /> Sincerely, <br /> Brett L Hunter <br /> Environmental Engineer <br /> Site Assessment and Remediation <br /> Attachment <br /> cc City of Tracy Fire Department, Prevention Division, 325 E 10th St, Tracy, CA 95376 <br /> Elizabeth Thayer, Central Valley RWQCB, Sacramento, CA <br /> Russell D Keil Jr, Keil Sonoma Corp , 244 Kearny St, San Francisco, CA 94108 <br />