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24323 Hwy 99,Acampo,CA 6353233ES411 -6- 3.0 SUBJECT PROPERTY CHARACTERISTICS 3.1 SITE DESCRIPTION 3.LI Site Description The subject property is addressed 24323 Highway 99,Acampo,California. It is comprised of an approximately 2.39- acre parcel of land and is improved with a gasoline station,a convenient store,and a restaurant. Asphalt-paved parking areas are present on the southern portion of the property. The northern portion of the property is predominantly gravel surfaces.The convenience store building is located at the southern property boundary. Current USTs are east of the convenient store,with gasoline pumps north of the store,and the diesel UST and diesel pumps located north of the gasoline pumps. The restaurant building is located along the eastern property boundary. Figure 2 illustrates the Site Map. 3.1.2 Historic Site Use The Site was initially constructed as Otto's Mobile Service in 1974,then by Murphy's Flying Horse in 1980,John's Mobile in 1985,Gholi Bajwa Texaco in 1990,and by the current Jahant Food and Fuel Stop since 1995. The Site is described as former Chevron#9-2396,Keith's Chevron on the GeoTracker Database,Global ID No.T0607700639. The subject property is currently occupied by a gas station and convenience store.Four USTs,including one 20,000- gallon double-walled diesel UST, two 5,000-gallon double-walled gasoline USTs and one 10,000-gallon gasoline UST, are located on the subject property. Although installation dates were not provided, the USTs were likely installed in 1998 after removal of the previous USTs.During a site inspection conducted by the San Joaquin County Environmental Health Department on April 12,2012,ten Class 2 violations associated with record keeping and leak detection systems were identified. All USTs, lines,dispensers and spill buckets were tested on April 12,2012.The "90" and "91" leak detectors were determined to be faulty and were subsequently replaced on April 20, 2012. Although copies of recent tank and line testing results revealed passing results, Based on information contained in the Phase I report,soil and/or groundwater sampling last occurred on the subject property in September 2003. The UST system has been in operation for more than 5 years and a Phase II assessment has not been conducted within the last 5 years. Further,the gasoline station has operated onsite since 1974 and no information related to the installation dates of the USTs removed in 1998 was provided, therefore, additional investigation is necessary to determine if a release has occurred and to comply with SBA requirements. 3.1.3 Geology and Hydrogeology The Property's physical location was researched employing a United States Geological Survey (USGS) 7.5 Minute Topographic Quadrangle(Quad)Map relevant to the Property. The Quad Map shows no physical features that may have environmentally impacted the Property. The Property and general area are identified as urban developed. No mines, wells,wetlands, or aboveground tanks were mapped in the general area of the Property. The elevation of the property is approximately 61 feet above mean sea level.There is a regional downslope to the north-northwest. The subject property(site)area is within the San Joaquin Valley and is underlain by a vast thickness of alluvium derived from the ancestral Sierra Nevada Mountains. This consolidated and semiconsolidated materials grades downward into consolidated sedimentary rocks.The site is nearly level with no faults in the vicinity. The site is located within the Tolumne River Watershed. Depth to groundwater in the immediate vicinity of the Site is reported at approximately 80 feet bgs, and flows to the south at a shallow gradient of 0.009 feet/foot. Soils encountered in the subsurface are comprised primarily of Silty Well Graded Sand (SM) with few thin ODIC Environmental.