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Chevron <br /> Chevron Pipe Line Company Y ,r,555 Market Street, San Francisco, California Tracy, CA I ��Mail Address: P.O.Box 7141,San Francisco,CA 94120-7141 April 6, 1988 III �a, <br /> APR 6 1988, <br /> ENVIROMENTAL HEALTH <br /> S 'T/SERVICES <br /> ALDEN PARK NEWSLETTER #8 <br /> Dear Alden Park Area Residents: <br /> This newsletter is to inform you of work that is ready to begin in and around Alden Park. <br /> Soil Venting Test - Construction of a soil venting test facility will begin in early April. A <br /> small block building will house equipment that will be used to draw air through the ground <br /> north of Alden Park. This technique removes oil from soil using biodegradation. The test <br /> will continue for up to 10 weeks after construction is completed. <br /> Seep Collection Vaults - We will be installing underground seep collection vaults in areas <br /> where a tar-like oil has been seeping to the ground surface. We will remove some ground <br /> around the seeps, and the vaults will provide a controlled outlet for future seepage. Most <br /> of the affected areas are on the far eastern edge of Alden Park, along and on Palm Circle. <br /> The only visible signs of the installed vaults will be manhole covers that are used for lids. <br /> 9aa2Co17 e(;tion Vau] <br /> (side View) <br /> Ground-7 Vault Cover —7 <br /> as I CCa <br /> y+?W I Vault I4 <br /> , Arl I : <br /> Gravel <br /> If you have any questions or concerns about these activities, please call me collect at <br /> (415) 894-9320. <br /> Very truly yours, <br /> M �� - <br /> Mary E. Metcalf <br /> Coordinator - Environmental <br /> Safety, Fire & Health <br /> MEM:kcm/d <br /> cc: Tracy, City Manager, Michael Locke <br /> Regional Water Quality Control Board - David Brent <br /> Department of Health Services - Chuck McLaughlin <br /> Local County Health - David Carls, Seyed Sadredin <br />