Laserfiche WebLink
(VYATt <br /> AS SOCIATE S i N C <br /> FINAL REMEDIATION'PLAN <br /> I FOR <br /> SOIL,AND GROUNDWATER REMEEDIA;TION <br /> Stockton Fire Engine Company No. 2 <br /> 110 West Sonora Street <br /> Stockton,California <br /> 1.0 INTRODUCTION <br /> jOn Behalf of the City of Stockton, ATC Associates Inc. has prepared this Final Remediation Plan <br /> (F")for the remediation of hydrocarbon-impacted soil and groundwater at Fire Engine Company No. <br /> 2 in Stockton, California. The hydrocarbon of primary concern is gasoline. While diesel and methyl <br /> tertiary butyl ether (MTBE) have also been detected at the site, the extents and concentrations are <br /> generally less of a concern than gasoline. This FRP includes a conceptual design for a groundwater air <br /> sparge (AS) system combined with a vapor extraction system (VES) to remediate gasoline M <br /> hydrocarbons. As a result of the gasoline remediation,it is anticipated that diesel and MTBE will also } <br /> be remediated, eitherdirectly or by enhanced natural attenuation. The FRP has been prepared for <br /> review,,comment, and approval by the California Regional Water Quality Control:Board and the San <br /> Joaquin County Public Health Services, Environmental Health Division (PHSIEHD) prior to final' <br /> i <br /> design, installation, and operation of the proposed systems. <br /> The subject site is located on the southwest comer of Commerce Street and Sonora Street in Stockton, <br /> California, as shown on Figure 1, Site Vicinity Map The,location:of the existing monitoring wells, <br /> vapor extraction wells, station building, former underground storage tanks(UM), and other pertinent <br /> features are shown on Figure 2, Generalized Site Plan. Between April 1, 1987 and October 28, 1993, <br /> six USTs were removed from the site. The location of tanks TI through T5 are shown on Figure 2. <br /> The exact location of tank T6 is not known, but the tank was located in the southeast portion of the <br /> site, near Commerce Street, and south of Church Street. According to information provided to ATC <br /> by PHSlEHD, samples obtained from the location of T6 following overexcavation were below <br /> detection levels for gasoline hydrocarbons. <br /> WA62514.0ltCAP rep©rt.dac 1 �' <br /> 4 <br />