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i <br /> c� CSI VISX011 Of <br /> FiONMENTAL SOLUTIONS Emcon <br /> May 11, 1999 <br /> Project 20F90-002.007 <br /> Mr. George Takemori <br /> A. Teichert and Son, Inc. <br /> P.O. Box 15002 <br /> Sacramento, California 95851 <br /> Re: Underground Storage Tank Removal and Confirmation Soil Sampling, Teichert <br /> Stockton Maintenance Facility, 103 North E Street, Stockton, California <br /> Dear Mr. Takemori: <br /> Pinnacle Environmental Solutions (Pinnacle), a division of EMCON, has prepared this <br /> report of activities associated with the removal of underground storage tanks (USTs) and <br /> product dispensers, and collection of confirmation soil samples at A. Teichert and <br /> Son, Inc. (Teichert) maintenance facility located 103 North E Street, Stockton, California <br /> (Figure 1). Confirmation soil sampling was performed by a Pinnacle geologist under the <br /> direction of Matthew Parker of the San Joaquin County Public Health Services, <br /> Environmental Health Division (SJCPHS/EHD). Teichert retained Town & Country <br /> Contractors, Inc., of Rancho Cordova, California to excavate and remove USTs, product <br /> dispensers, and associated piping. This report also summarizes additional excavation <br /> and confirmation sampling activities performed to remove hydrocarbon impacted soil <br /> identified during the initial UST removal. <br /> SITE DESCRIPTION <br /> Three steel USTs were located southeast of the existing fuel dispenser island. There <br /> were two 20,000-gallon diesel fuel USTs (tanks #5 and #6) and one 12,000-gallon diesel <br /> fuel UST (tank #8) that was previously used for unleaded gasoline. Locations of the <br /> USTs and fueling islands are presented on Figure 2. <br /> UST REMOVAL <br /> On March 23, 1999, a Pinnacle geologist was on-site to observe the excavation and <br /> removal of the three USTs. The USTs had been previously exposed, pumped dry, <br /> • inerted with dry ice, and prepared for removal. Approximately 750 cubic yards of soil <br /> overburden was stockpiled on-site for evaluation and disposal. The USTs appeared to be <br /> << <br /> 3939 Cambridge Road,Suite 220 Cameron Park,California 95682 (530)676-6884 (530)676.6885 Fax <br />