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Boyett Petroleum June 29, 2001 <br /> 429 South Main Street, Manteca, California Page 6 <br /> Final Report of Findings for Lateral <br /> Extent of Groundwater Contamination <br /> intervals of not more than five feet (5') in order to evaluate the subsurface <br /> materials. All soil samples were screened with a properly calibrated field PID. <br />' The soil samples were taken using a California Modified Split Spoon sampler with <br /> brass liners. The sampler was driven continuously by a wire line hammer. <br /> The laboratory samples did not have head space and were immediately sealed in <br /> their liners using Teflon® lined plastic caps. The remaining sample was removed <br />' from its liner to be used as an aide to the on-site specialist in logging the material at <br /> that depth. <br />' Soil samples collected for analysis were analyzed using EPA method 5030/LUFT <br /> for gasoline petroleum hydrocarbons, EPA method 8260B for BTX&E compounds, <br /> oxygenates, EDB and 1,2-DCA. Analyses were conducted by GeoAnalytical <br /> Laboratories, Inc. a State certified laboratory in Modesto, California. <br /> All samples were recorded on a Chain of Custody and placed in an ice chest cooled <br />' with ice for transport to the lab. <br /> 4.0 Soil Analytical Results <br />' Soil samples were submitted for analysis at depths of 43.5' and 50.0'. The samples were <br /> analyzed for benzene, toluene, ethyl benzene, xylenes (BTEX), methyl tert•butyl ether <br /> (MTBE) by EPA Method 802113, and gasoline by EPA Method 5030 Luft. The samples <br />' were analyzed by GeoAnalytical Laboratories, Inc., a State certified laboratory in Modesto, <br /> California. <br /> The soil samples indicated "none-detected" (ND) levels for all analytes that were tested. <br /> The soil analytical data can be found in Appendix B and Table 1 of this report. <br /> 5.0 Groundwater Analytical Results <br /> A water sample was collected and analyzed for BTEX by EPA Method 8021B, gasoline by <br /> EPA Method 5030/LUFT, MTBE, ethanol, ter -Butanol, di-Isopropyl ether, Ethyl tert-butyl <br />' ether, and tert-Amyl methyl ether by EPA Method 8260B. The sample was analyzed by <br /> GeoAnalytical Laboratories, Inc., a State certified laboratory in Modesto, California. <br /> BTEX and gasoline results were "none-detected" (ND) in MW-9. The result for MTBE <br /> 1 A _!T ml__ 1 r a -- y <br /> was 14 ug/l . Inc tematudur or Lne azov.rs anaiyies were ND. ine State allowable level <br /> for MTBE in drinking water is 17 ug/L. The MTBE level of 14 ug/L in MW-9 falls below <br />