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a <br /> G <br /> M ' <br /> Guardino — Crawford Company September 2013 <br /> 517 West Fremont Street, Stockton <br /> Claim No : 14349 <br /> ATTACHMENT 2: SUMMARY OF BASIC CASE INFORMATION ij (Conceptual Site Model) <br /> Site Location/History � rJD <br /> • This Site has been redeveloped as a restaurant and is bounded by a business to the west, an <br /> � � — empty lot to the north , a residence to the east;and a business across West Fremont Street to <br /> the south . �— <br /> r <br /> t � � , •, A Site map showing the location of the former UST, monitoring wells , groundwater level, and <br /> ~ total petroleum hydrocarbons as gasoline contours is provided at the end of this review <br /> summary (Advance GeoEnvironmental (AGE) , 2012) . <br /> tS Nature of Contaminants of Concern : Petroleum hydrocarbons only. <br /> • Source: UST system . <br /> • Date reported : February 1988 . <br /> • Status of Release : USTs removed . <br /> Tank Information <br /> Tank No. Size in Contents Closed in Place/ Date <br /> Gallons Removed/Active <br /> 1 5 , 000 I Gasoline Removed Se tember 1989 <br /> Receptors <br /> • GW Basin : San Joaquin Valley — Eastern San Joaquin . <br /> • Beneficial Uses: Central Valley Regional Water Quality Control Board (Regional Water Board) <br /> Basin Plan lists agricultural , domestic, and municipal supply. <br /> • Land Use Designation : Aerial photograph available on GeoTracker indicates mixed residential <br /> and commercial land use in the vicinity�9f the Site. <br /> • Public Water System: California Water Service�and Stockton East Water District. <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 250 feet of <br /> the defined plume boundary. No other water supply wells were identified within 250 feet of the <br /> defined plume boundary in the files reviewed . <br /> • Distance to Nearest Surface Water: There is no identified surface water within 250 feet of the <br /> defined plume boundary. <br /> Geology/Hyd rogeology <br /> • Stratigraphy: The Site is underlain by interbedded and intermixed sand , silt, and clay. <br /> • Maximum Sample Depth: 35 feet below ground surface (bgs) . <br /> • Minimum Groundwater Depth : 11 . 90 eet bgs at monitoring well MW-5. <br /> • Maximum Groundwater Depth : 17. 2W feet bgs at monitoring well MW-2. <br /> • Current Average Depth to Groundwater: Approximately 14 feet bgs . <br /> • Saturated Zones(s) Studied : Approximately 12 - 35 feet bgs. <br /> • Appropriate Screen Interval : Yes. <br /> • Groundwater Flow Direction : Variable, northwest to northeast with an average gradient of <br /> 0. 002 feet/foot (November 2012) . <br /> Page 6 of 12 <br />