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Q <br /> Limited Phase 11 Subsurface Investigation Report <br /> 902-908 East Scotts Avenue <br /> Stockton,California a ntea g ro u p <br /> Antea Group Project No. UPR82572A <br /> characterization of soils and to evaluate "background" soil conditions based on the historical widespread industrial <br /> occupancy of the site and vicinity. <br /> 2.4 Physical Setting <br /> The following table provides physical setting information for the subject property and surrounding area: <br /> PHYSICAL SETTING COMMENTS SOURCE <br /> INFORMATION <br /> Stockton West, California Quadrangle <br /> Site Elevation Approximately 25 feet above mean sea level 7.5-Minute Topographic Map Series, <br /> USGS,1987 <br /> Surface Stockton West, California Quadrangle <br /> Site and vicinity are generally flat,with overall <br /> Runoff/Topographic gentle downward slope to the west. 7.5-Minute Topographic Map Series, <br /> Gradient USGS,1987 <br /> Mormon Slough is located approximately 200 feet Google Earth and <br /> Closest Surface Water southwest of the property. Mormon Slough flows Stockton West, California Quadrangle <br /> generally northwest before draining into the 7.5-Minute Topographic Map Series, <br /> Stockton Deepwater Channel(San Joaquin River) USGS,1987 <br /> Quaternary deposits consisting of unconsolidated <br /> General Geology and semi-consolidated alluvium,lake,playa,and 2010 Geologic Map of California <br /> terrace deposits. <br /> Soil Type(s) Yellowlark gravelly loam,2 to 5%slopes USDA Web Soil Survey <br /> Federal Emergency Management Agency <br /> Located in Flood"Zone X"—an area determined (FEMA)Flood Insurance Rate Map for San <br /> Flood Zone to be outside the 0.2%annual chance floodplain. Joaquin County,California and Incorporated <br /> Areas(Map#06077C0460F),effective date <br /> October 16,2009 <br /> General Hydrogeology San Joaquin River Hydrologic Region CA Department of Water Resources,Bulletin <br /> 118 <br /> Inferred Ground Water The inferred groundwater flow direction is to the Stockton West, California Quadrangle <br /> Flow Direction west or southwest,in the general direction of 7.5-Minute Topographic Map Series, <br /> Mormon Slough and the Port of Stockton. USGS,1987 <br /> Antea Group searched nearby geologic details by reviewing publicly available records for nearby environmentally <br /> regulated sites on the state's GeoTracker database. According to information obtained from several nearby sites, <br /> depth to groundwater could range from 20 to 50 feet below ground surface(bgs). <br /> 3.0 LIMITED SUBSURFACE SOIL INVESTIGATION <br /> 3.1 Pre-field Activities <br /> Antea Group completed a Health and Safety Plan (HASP) in accordance with Title 8, Section 5192 of the California <br /> Code of Regulations. The HASP contained a list of emergency contacts, as well as a hospital route map to the <br /> nearest emergency facility. Field personal conducted daily tailgate meetings and review of the HASP, modifying it <br /> with any site-specific updates or changes in working conditions. Antea Group also obtained all necessary permits <br /> (Appendix A)and approvals from the San Joaquin County Environmental Health Department(SJCEHD). <br /> 3 www.anteagroup.com <br />