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Advanced <br />GeoEnvironmental, Inc. <br />15 December 2008 <br />AGE-NC Project No. 06-1414 <br />Mr. Fabian Ceballos <br />2615 North West Lane <br />Stockton, California 95205 <br />Subject: Limited Site Assessment Report (Septic Tank Area) <br />FABIAN'S COLLISION CENTER <br />2615 North West Lane, Stockton, California <br />Dear Mr. Ceballos: <br />Advanced GeoEnvironmental, Inc. has prepared the enclosed report for the property located at 2615 <br />North West Lane, Stockton, California. The scope of work included the disposal of septic tank <br />contents, soil sample collection and analysis, and preparation of this report. Background information <br />was included in the AGE-prepared Limited Site Assessment Work Plan (Septic Tank Area), dated 15 <br />May 2006 and approved by San Joaquin County Environmental Health Department (EHD) on 07 <br />June 2006. The location of the site is indicated on (Figure 1). <br />SEPTIC WASTE DISPOSAL <br />The on-site septic tank and contents were treated with a 30 gallon, 12.5% mixture of hypochlorite <br />solution (approximate ratio of 1 gallon per 35 gallons of septic waste) to kill coliform bacteria. On <br />04 January 2008, the treated contents of the septic tank were pumped from the holding tank into an <br />Advanced Chemical Transport, Inc. vacuum truck and hauled to the Evergreen Oil, Inc. Waste <br />Treatment, Storage, and Disposal facility in Newark, California. A total of 900 gallons was <br />transported and disposed of under hazardous waste manifest 13225. A copy of the manifest is <br />included in Appendix A. <br />SUBSURFACE FIELD PROCEDURES <br />A subsurface investigation was conducted, in accordance with the Limited Site Assessment Work <br />Plan (Septic Tank Area), to collect and analyze soil samples from beneath the septic tank and the <br />bottom of the seepage pit of the on-site residential septic system. On 04 February 2008, a Well <br />Boring Permit Application was submitted and approved. On 06 February 2008, an AGE <br />representative was on-site to locate the sampling point required by the EHD. <br />837 Shaw Road, Stockton, California 952! 5 <br />Telephone (209) 467-1006 Fax (209) 467-1118