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� n be submitted to the laboratory One sample will also be collected and analyzed from the capillary fringe Following installation and development, the well will be sampled as part of the next quarterly sampling event Sampling will be conducted in accordance with BRE's Standard Operating Procedure for Groundwater Sampling (Appendix B) All field activities will be performed under the supervision of a California-registered Civil Engineer experienced in underground tank leak investigations All drilling cuttings, development water, and decontamination waste water will be contained within DOT- approved 55-gallon drums, appropriately labeled, and held on-site pending characterization for disposal 3.6 Decontamination Procedures Prior to advancing each boring, the augers will be decontaminated with the use of a high pressure steam cleaner The split spoon sampler will be cleaned with a Liquinox/Alconox solution scrub and double-rinsed, first using tap water followed by a final nnse with distilled water 3.7 Laboratory Analyses • Representative soil samples collected from the subsurface investigation will be submitted to Centrum Analytical Laboratories, Inc , Redlands, California, which is certified by the State of California Department of Health Services to perform testing for chemical analyses Soil samples will be analyzed for BTEX and methyl tert-butyl ether (MTBE) using EPA Method 8020 The soil samples will also be analyzed for TPHg using EPA Method 8015 modified Groundwater samples will also be analyzed for BTEX, MTBE, and TPHg, using EPA Methods 602 and 8015 modified The method detection limits will be as follows Soil Water (mg/kg) (mg/L) Benzene 0 005 00005 Toluene 0 005 0 0005 Ethyl,Benzene ' 0 005 00005 Total Xylenes 0 015 00015 MTBE 0 005 00005 f TPHg 10 0 050 I I , V V E ' ,I I I I ``I, '! 1 ' BRE-FL.]AYJ96,194/MY41-1 1i III ,I I