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LAWRENCE & ASSOCIATES <br /> Engineering Geologists • Ground-water Hydrologists <br /> 1730 SOUTH STREET,SUITE C <br /> REDDING,CALIFORNIA 96001 DAVID A. LAWREIf `{ 8 <br /> TELEPHONE (916) 244-9703 c 1 <br /> }11 y <br /> August 15 , 1988 <br /> t: t Pw 5 <br /> Mr. Jaime Favila tEK' <br /> San Joaquin Local Health District <br /> 1601 Hazelton Av. <br /> Stockton, CA 95201 <br /> Dear Mr. Favila: <br /> SUBJECT: CLOSURE PLAN FOR TWO FUEL TANKS AT THE SIMPSON PAPER <br /> COMPANY, RIPON MILL <br /> This letter comprises a closure plan for 2 underground fuel <br /> tanks at the Simpson Paper Company, Ripon Mill. <br /> Site History <br /> Two underground tanks were removed several years ago by Simpson <br /> personnel who were unaware of the reporting requirements <br /> regarding underground tank removal. The 2 tanks -named UST #1 and <br /> UST #2 were located as shown on Figures 1 and 2. The following <br /> is a summary of information regarding the tanks: <br /> Summary of Tank Information <br /> UST # 1 UST #2 <br /> Year installed 1962 1982 <br /> Year removed 1982 1985 <br /> Substance stored regular gasoline regular gasoline <br /> Tank capacity 300 gal 400 gal <br /> Current disposition removed from site given to employee, <br /> used for scrap not in use <br /> No construction plans for the tanks exist, however, Simpson <br /> employees involved in the tank removal have reported the tanks <br /> were approximately 3 feet in diameter and were approximately 3-4 <br /> feet below the surface. <br /> Closure Plan <br /> The closure plan addresses the information required by the San <br /> Joaquin Local Health District' s "permanent closure tank removal <br /> policy," and follows the outline presented in the policy. <br />