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28 February 2001 <br /> AGE-NC Project No. 00-0795 <br /> Page 3 of 4 <br /> 2.1.3. Equipment Decontamination <br /> Prior to sample collection, Geoprobe soil sampling equipment was thoroughly rinsed with clean <br /> water after being washed with a solution of Alconox. Geoprobe rods were thoroughly cleaned prior <br /> to soil probe boring advancement. <br /> 2.2. ANALYTICAL METHODS <br /> The soil and ground water samples were transported to McCampbell Analytical Inc. (MAI), a <br /> California Department of Health Services (DHS)-certified laboratory, for analysis. Soil samples P1- <br /> 10, P2-5, P3-5, P3-10, P4-5 and P4-10 and ground water sample P4W-02/12/01 were analyzed for <br /> the following: <br /> • Total petroleum hydrocarbons quantified as diesel (TPH-d) and as gasoline (TPH-g) in <br /> accordance with EPA Method 8015K <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTE&X) and methyl-tertiary butyl ether <br /> (MTBE) in accordance with EPA Method 8020; and <br /> • Halogenated volatile organic compounds (HVOC) in accordance with EPA Method 8010. <br /> 3.0. FINDINGS <br /> 3.1. SOIL PROFILE <br /> Generally, dark yellowish brown to moderate yellowish orange, damp, fine sand with silt and silty <br /> sand was encountered from approximately 5 feet bsg to approximately 25 feet bsg. Boring logs are <br /> included in Appendix A. <br /> 3.2. ANALYTICAL RESULTS OF SOIL SAMPLES <br /> TPH-g, TPH-d, BTEX, MTBE and HVOCs were not detected above laboratory reporting limits in <br /> any of the six soil samples submitted for analysis. Analytical results of the soil samples are <br /> summarized in Table 1. The laboratory report(MAI Lab Number 60009, 60010, 60013 and 60014) <br /> and chain-of-custody form are included in Appendix B. <br /> Advanced GeoEnvironmental,Inc. <br />