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Waste equipment rinse water and purged groundwater generated during the drilling and sampling ' l activities was contained in one, separate 55-gallon drum and stored on-site, pending proper disposal On August 13, 2002, Ramos Environmental Services removed 50 gallons of wastewater from the drum using a vacuum truck, and transported the water as non-RCRA hazardous waste liquid (oily water) to its West Sacramento facility for recycling A copy of the waste manifest is also included in Appendix C r 23 Sensitive Receptor Survey ' To evaluate if gasoline hydrocarbons in soil and groundwater beneath the site threaten any nearby sensitive receptors, Ramage Environmental surveyed potential sensitive receptors within ' 2,000-feet of the site (site vicinity) The survey included reviewing water well completion reports at the California Department of Water Resources (DWR), contacting the local water purveyor, and touring the site vicinity For the site vicinity, seven water well completion reports were on file at DWR Appendix D ' includes a base map showing the locations of the identified wells, a table summarizing any well construction data, and copies of the available well completion reports DWR records indicate that a water well (#1) once existed within courthouse square According to Mr Nick Isaac of the San Joaquin County Facilities Management Department, courthouse square ' represents the entire courthouse grounds In the early 1960s, the former courthouse was expanded and the well was probably destroyed or abandoned at that time The location of the former well is likely beneath the footprint of the current courthouse building DWR records also indicate that a water well (#2) once existed at 202 E Main Street, the site of the current San Joaquin County Canlis Administration Building According to Mr Isaac, this well was probably destroyed or abandoned when the Canlis Building was constructed in 1982 Mr Isaac was not aware of any water wells operating on county property within the site vicinity 1 The following current owners of five other properties with water wells identified in the DWR ' records were unaware of the existence of these wells Ernesto Rosa (#3), An Vuong (94), Jose Solano (#5), Ignacio Chacon, Maintenance, City of Stockton Police Department (#6), and Chinese Multi-Cultural Servie Center (#7) All five of these property owners indicated that water at their locations was supplied by California Water Service Company 10