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SOIL: For sample collection,the US EPA standards for field sampling (EPA SW 846) will <br /> be followed. Samples will be collected using 2"x 6"brass tubes from the backhoe bucket <br /> or with a slide tube sampling when the sample cannot be collected with the backhoe <br /> bucket.A soil sample will be collected under each end of the tank in the native soil. If <br /> groundwater is present in the excavation, the samples will be collected from the sidewalls <br /> at each end of the tank. In some cases, additional samples from the sidewalls at other <br /> areas of potential contamination. <br /> WATER: A disposable bailer will be utilized to collect the water from the excavation. <br /> Sample vials and bottles will be filled to overflowing and sealed so that no air is trapped in <br /> the vial or bottle. Once filled, samples will be inverted and tapped to test for air bubbles. <br /> Samples will contained in vials and bottles approved by the US EPA and the RWQCB. <br /> Some analyses may require separate sample containers in accordance with EPA methods <br /> described in 40 CFR, Part 136 and SW-846. The following comments are general <br /> guidelines and do not indicate that all of the analyses discussed are required by this <br /> project. Water samples intended for volatile hydrocarbon analysis will be contained in 40 <br /> ml VOA vials and capped with Teflon-lined septa caps. Samples for TPH-D, BTEX(EPA <br /> Method 8015Ml8020). Other samples will not be preserved with acid. Water samples <br /> intended for low level diesel analysis will be stored in dark glass 1-litre bottles to reduce <br /> degradation by sunlight. Antimicrobial preservative (HCI)may be added to the sample if a <br /> prolonged holding time is expected prior to analysis. <br /> IA-1-MC-4 <br />