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Ralph's Square - 2 - 3 July 2014 <br /> 2122 S. Airport Way, Stockton <br /> San Joaquin County <br /> petroleum impacts in the overlying soils. Soils should be properly logged using the <br /> Unified Soil Classification System, and lithologic contacts but the additional cost for <br /> laboratory analysis are not warranted. <br /> 4. Please add analysis for naphthalene to the list of petroleum hydrocarbons to be <br /> analyzed in groundwater samples collected from this site. Naphthalene is a common <br /> constituent in gasoline and is a possible human carcinogen. <br /> In summary, please submit the following: <br /> • Results of well installation and groundwater sampling in the next monitoring report due <br /> 30 October 2014. <br /> Please do not hesitate to call me at (916) 464-4619 or by email at <br /> ccondon(c�waterboards.ca.aov if you have any questions or concerns. <br /> CORICONDON <br /> Senior Engineering Geologist <br /> cc: Nuel Henderson, San Joaquin County Environmental Health Department, Stockton <br /> Peter Manion, Hakeem, Ellis & Marengo, 3414 Brookside Rd., Ste. 100, Stockton 95219 <br /> Daniel Villanueva, Advanced GeoEnvironmental, Inc., 837 Shaw Rd., Stockton 95205 <br />