SITE INFORMATION AND CORRESPONDENCE

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6ETTLER - RYAN1c. N March 6, 1996 .Mr. Brett Hunter Chevron USA Products Company P.O. Box 5004 San Ramon, California 94583 Subject: Letter Report for Well Abandonment at Former Chevron Service Station #9-7780, 3246 East Fremont Street, Stockton, California. Mr. Hunter: At the request of Chevron USA Products Company (Chevron), Gettler-Ryan Inc. (G-R) abandoned eight groundwater monitoring wells at the subject site(Figure 1). On March 4 and 5, 1996, G-R observed Bay Area Exploration,Inc. (C57 522125)abandon groundwater monitoring wells EA-1 through EA-6, MW-4, and MW-5. The location of the former wells are shown on the attached Site Plan (Figure 2). The well abandonment permit issued by San Joaquin County Public Health Services (SJCPHS) is attached. The 4-inch diameter wells (EA-1 through EA-6) and the 2-inch diameter wells (MW-4 and MW-5) were pressure-grouted with neat cement to the total depth of the well with approximately 25 to 30 pounds per square inch (psi) of pressure applied at the top of each well for approximately 5 minutes. After pressure- grouting, each wellhead box was removed and the upper 2 feet of casing was overdrilled with 8-inch diameter hollow-stem augers. The borehole was then grouted to surface grade with neat cement. The wellhead boxes were removed from the site and drilling debris was spread onsite. Ms. Mary Meays of the SJCPHS was onsite to observe well abandonment activities. The wells have been properly abandoned as required. If you should have any questions, please call us in our Rancho Cordova office at (916) 631-1300. Sincerely, Gettler- yan Inc. \ D GF��O Gr g A. Gurss co Proj t Manager .5577 Stephen J. Carter Senior Geologist, R.G. FOF CAL1F� Attachments: Figure 1 - Vicinity Map Figure 2 - Site Plan Well Abandonment Permit CH97780.RP1 6747 Sierra Court , Suite J Dublin , California 94568 ( 510 ) 551 - 7555