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rJ 3140 Gold Camp Drive, Suite 160 <br /> Rancho Cordova, CA 95670 <br /> (916) 853-9293 FAX (916) 853-9297 <br /> November 29, 1999 Project No. 07400230 <br /> Mr. Kevin Post - <br /> URSA Engineering R' E C E "V"E D <br /> 3963 Eastside Road <br /> Redding, CA 96001 <br /> DEC 0";2 1999 <br /> Subject: Workplan- Soil Boring Investigation EIVVIROI�I�EI�TAL HEALTH <br /> Jif Lube <br /> 1130 N. Main Street PERMIT / SERVICES <br /> Manteca, California <br /> Dear Mr. Post: <br /> At your request, BSK&Associates.(BSK)has prepared this workplan to conduct a soil boring <br /> investigation at the above referenced site. The scope of work,based on discussions with you, <br /> and with Mr. Jeff Wong of the San Joaquin County Public Health Services, Environmental <br /> Health Division(PHS-EHD), consists of advancing one soil boring through the former <br /> underground storage tank(UST) excavation for the collection of soil and groundwater samples. <br /> PURPOSE AND SCOPE <br /> Analytical results of a soil sample obtained from the bottom of the excavation of a waste oil UST <br /> indicated that methyl tertiary-butyl ether(MTBE)remained in soil beneath the former UST at a <br /> concentration of 6.5 µg/kg, ata depth of approximately 12 feet below ground surface (bgs). The <br /> purpose of the soil boring investigation will be to obtain dataxegarding the vertical migration of <br /> waste oil constituents, and data regarding impact to groundwater. Groundwater is anticipated to <br /> be 14 to 17 feet bgs in the vicinity the site. <br /> METHODOLOGY <br /> This workplan includes descriptions of methodologies anticipated for conducting the soil boring <br /> investigation. <br /> Project Planning and Permitting <br /> BSK will obtain one soil boring permit from the PHS-EHD. The site is currently under an active <br /> Underground Service Alert ticket. URSA Engineering will keep the ticket active until their <br /> project is completed. <br /> Geotechnical Engineering o Engineering Geology - Environmental Services o Construction Inspection &Testing Analytical Testing <br />