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GRANITE CONSTRUCTION—FRENCH CAMP Page 8 <br /> WKA No 2088 09 <br /> October 10, 2005 <br /> Sensitive Receptor Survey <br /> As part of our investigation, we performed a sensitive receptor survey for the surrounding area <br /> within a 2,000-foot radius of the property boundary The purpose of this survey was to identify <br /> the relative proximity of conduits such as surface water bodies or water wells that might facilitate <br />' the transport of residual fuel constituents from the site to areas of potential humans or wildlife <br /> exposure <br /> Our search for local surface water bodies consisted of a windshield survey and a review of the <br /> USGS 7 5 Minute Series Lathrop Quadrangle map Based on the windshield survey and map <br /> review, the closest surface water body is the San Joaquin Irrigation District Canal located <br /> approximately 4,000 feet east of the property boundary The San Joaquin River is located <br />' approximately 2 miles west of the property <br /> In addition to the above windshield survey and review of the USGS 7 5 Minute Lathrop <br /> Quandrangle map, our water well survey included a review of the State of California Department <br /> of Water Resources (DWR) well construction records These confidential records were obtained <br /> with the help of staff from DWR <br /> Review of available information and telephone interviews with DWR and San Joaquin County <br /> Flood Control District personnel indicate that there are no public municipal or irrigation wells <br />' located within a 2,000-foot radius of the site The nearest irrigation well (DWR#12P01) is <br /> located approximately 2,600 feet southeast from the site During the well survey 33 wells were <br /> confirmed within a 2,000-foot radius of the site Copies of the Water Well Drillers Report, State <br /> well numbers, boring logs and well construction details are included in Appendix H <br /> Based on reported soil and groundwater petroleum hydrocarbon concentrations, the relatively flat <br /> groundwater gradient beneath the site, and the significant distance to sensitive receptors, the <br /> likelihood that sensitive receptors will be impacted appears minimal <br /> Conclusions and Recommendations <br /> . The majority of soil containing residual petroleum hydrocarbons was removed (approximately 700 <br /> 1 cubic yards)from the site at the time of the UST removal and excavation activities Groundwater <br /> WALLACE KUHL <br /> Recycled paper &ASSOCIATES INC <br />