Laserfiche WebLink
Chevron #9-0557 ~"' �"`� <br /> June 2013 <br /> 139 Center Street South, Stockton <br /> Claim No: 5820 <br /> ATTACHMENT 2: SUMMARY OF BASIC CASE INFORMATION (Conceptual Site Model) <br /> Site Location/History <br /> • This case is located on the northwest corner of West Washington Street and South Center <br /> Street and is an empty lot. <br /> • The Site is bounded by the California Highway 4 and a vacant lot to the south, city manager's <br /> office across South Center Street to the east, and a Greyhound bus facility to the north and <br /> west. <br /> • Site.map showing the location of the former USTs, monitoring wells and groundwater level <br /> contours is provided at the end of this closure review summary (Holguin, Fahan &Associates, <br /> Inc., [HFA] 2012). <br /> • Nature of Contaminants of Concern: Petroleum hydrocarbons only. <br /> • Source: UST system. <br /> • Date reported: April 1990. <br /> • Status of Release: USTs removed. <br /> • Free Product: None reported since October 2002. <br /> Tank Information <br /> Tank No. Size in Contents Closed in Place/ Date <br /> Gallons Removed/Active <br /> 1 10,000 Gasoline Removed 2003 <br /> 2 10,000 Gasoline Removed 2003 <br /> 3 5,000 Gasoline Removed 2003 <br /> 4 5,000 Diesel Removed 2003 <br /> 5 1,000 Waste Oil Removed 2003 <br /> Receptors <br /> • GW Basin: San Joaquin Valley - Eastern San Joaquin. <br /> • Beneficial Uses: The Central Valley Regional Water Quality Control Board (Regional Water <br /> Board) Basin Plan lists agricultural, municipal, domestic, and industrial supply. <br /> • Land Use Designation: Aerial photograph available on GeoTracker indicates mixed industrial, <br /> commercial, and residential land use in the vicinity of the Site. <br /> • Public Water System: Stockton East Water District and California Water Service. <br /> • Distance to Nearest Supply Well: According to data available in GeoTracker, there are no <br /> public supply wells regulated by the California Department of Public Health within 1,000 feet of <br /> the defined plume boundary. No other water supply wells were identified within 1,000 feet of <br /> the defined plume boundary in the files reviewed. <br /> • Distance to Nearest Surface Water: There is no identified surface water within 1,000 feet of the <br /> defined plume boundary. <br /> Geology/Hydrogeology <br /> • Stratigraphy: The Site is underlain by interbedded and intermixed sand, silt, and clay. <br /> • Maximum Sample Depth: 120 feet below ground surface (bgs). <br /> • Minimum Groundwater Depth: 19.46 feet bgs at monitoring well MW-16. <br /> • Maximum Groundwater Depth: 29.67 feet bgs at monitoring well MW-8. <br /> • Current Average Depth to Groundwater: Approximately 20 feet bgs. <br /> Page 7 of 11 <br />