Laserfiche WebLink
low" `( <br /> PUBLIC NOTICE REGULATORY CASE CLOSURE FOR UNAUTH 8111 <br /> SYSTEM RELEASE AT THE CHEROKEE TRUCK STOP <br /> 3535 East Cherokee Road, Stockton, California ,IAN 10 2013 <br /> This summary of the Cherokee Truck Stop leaking underground stori o q@&TH <br /> been prepared by Advanced GeoEnvironmental Inc. (AGE): �►�Ti t/SERVICES <br /> The property address is given as 3535 East Cherokee Lane, Stockton, California or APN. <br /> 092-20-07(site). The property is approximately 13.43 acres in size. The site is located <br /> approximately 300 feet northeast of the intersection of Cherokee and Newton Road, in the <br /> eastern portion of Stockton, California. Surrounding land uses include trucking facilities that <br /> formerly provided fueling and truck repair, warehouses, and small businesses. The <br /> property is used mainly for a trucking terminal. Several related businesses are located on <br /> the property, including a fueling island, truck wash, truck repair, body shop, truck sales, <br /> small restaurant, and offices. <br /> UNDERGROUND STORAGE TANK REMOVAL <br /> Unauthorized releases of hydrocarbons were reported from fuel piping at the site on three <br /> occasions in 1988 and 1989. On 18 September 1998, six underground storage tanks <br /> (USTs) were removed from the southern portion of the site. Excavation of approximately <br /> 400 cubic yards of hydrocarbon-impacted soil was performed after removal of the USTs. <br /> On 16 March 1998, approximately 180 cubic yards of impacted soil was disposed; the <br /> remaining clean soil was used as backfill. The San Joaquin County Environmental Health <br /> Department (EHD) subsequently required investigation of the extent of impacted soil and <br /> ground water. <br /> SUBSURFACE INVESTIGATIONS <br /> Since May 1990, soil borings have been advanced near the UST, piping and dispenser <br /> areas to assess the lateral and vertical extent of impacted soil and to define the plume of <br /> dissolved petroleum hydrocarbons and fuel additives in groundwater. Petroleum <br /> hydrocarbon compounds were detected in most soil and groundwater samples collected <br /> from the borings. Between September/October 1990 and September 2005 nine <br /> groundwater monitoring wells were installed on-site to a maximum depth of approximately <br /> 102 feet below surface grade to determine if petroleum hydrocarbons had impacted ground <br /> water. In July 2008 three soil vapor wells (VW-1, VW-2 and VW-3) were installed. <br /> REMEDIATION FEASIBILITY <br /> AGE previously had recommended preparation of a Remedial Action Work Plan (RAWP), <br /> proposing high vacuum soil vapor extraction (HVSVE) as the remediation technology for <br /> vadose zone and deeper hydrocarbon-impacted soils which directly posed a threat to <br /> groundwater at the site. An evaluation of potential corrective action alternatives to mitigate <br /> residual low concentration impact to ground water was also to be in the RAWP. However, <br /> concentrations of dissolved petroleum and most fuel additives have since declined. AGE <br /> recommended implementation of remediation technologies to mitigate the petroleum <br /> hydrocarbon contaminate in soil, that directly posed a threat to groundwater at the site. <br />