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C � <br /> Cr¢alogicalTeelsicslnc ,g Page 3 <br /> Tank Closure Testing Report Iw <br /> i t Project No. 1218.2 <br /> August 3,2005 <br /> E <br /> 2.1.2 Soil Laboratory Analyses <br /> The soil samples collected on July 12, 2005, were delivered to Castle Analytical Laboratory <br /> (California ELAP No. 2480), of Atwater,California, for the following analyses: <br /> • Benzene, toluene, ethyl benzene and xylene(BTEX) byiEPethod 8260B <br /> • Gasoline range petroleum hydrocarbons (TPH-G) by EPA method 8015 <br /> • Diesel range petroleum hydrocarbons (TEPH-D) by EPA method 8015 <br /> E <br /> • Oxygenated fuel compounds (OFCs) by EPA method 8260 <br />' ETBE TAME and TBA <br /> o MtBE, DIPE, .� <br /> • Lead Scavengers by EPA method 8260 !� <br /> o 1,2-DCA and EDB <br /> rs Castle Analytical Laboratory subcontracted with McCampbell Analytical, Inc. (DHS <br /> Certification No. 1644) to perform the following analysis: 'p <br /> • Lead by ICP using EPA method 6010 {p <br /> The detection limits for these compounds are listed in the,laboratory data sheets included in <br /> Appendix B and summarized in Table I of Appendix A. A Chain of Custody was completed <br /> for all samples collected and tracked to ensure sample integrity. <br /> k 3.0 RESULTS OF INVESTIGATION is <br /> Summary analytical data tables are included in Appendix A. Laboratory Data Sheets are <br /> included in Appendix B and borehole logs are included in Appendix C. The analytical results <br /> and field observations are discussed below. zA <br /> H <br /> 3.1 Analytical Results a <br /> Two (2) soil samples were collected from each of the borings and',the samples were submitted <br /> for laboratory analyses with the following results: <br /> GP-1 <br /> • The soil sample collected at 12-foot bgs contained normal levels of lead (7.3mg/Kg). The <br /> 12-foot bgs sample was non-detect above laboratory reporting limits for all other <br /> analyzed constituents. <br /> • The soil sample collected at 14-foot bgs contained normal levels of lead (5.9mg/Kg) and <br /> Iow levels of diesel (130mg/Kg). The 14-foot bgs sarriple was non-detect above <br /> laboratory reporting limits for all other analyzed constituents. <br /> p <br /> p <br /> GP-2 ?` <br /> • The soil sample collected at 12-foot bgs contained normal levels of lead (6.4mg/Kg). The <br /> 12-foot bgs sample was non-detect above laboratory reporting limits for all other <br /> 4 analyzed constituents. <br /> i <br /> �� ii <br />