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CAMBRIA <br /> EXCAVATION SAMPLING PROCEDURES <br /> After confirming a hazardous material, hydrocarbon or other release, soil excavation is often done to <br /> remove contaminant-bearing soils that may pose a threat to ground water quality beneath a site. Soil <br /> samples are routinely collected to monitor the progress of the excavation and to confirm that soils <br /> containing compounds above regulatory limits have been completely removed. Cambria has developed <br /> standard operating procedures for collecting soil samples during routine excavation operations to ensure <br /> that the samples are collected, handled and documented in compliance with State and local regulatory <br /> agency regulations. <br /> The removed soil is typically segregated based on perceived contaminant concentration and stockpiled <br /> onsite on plastic sheeting. Prior to collecting soil samples during excavation operations, Cambria field <br /> staff screen the removed soils with a portable photo-ionization detector (PID) (when excavating volatile <br /> compounds) and record observations of soil staining and lithology to qualitatively assess the presence or <br /> absence of the compound(s) of concern. When field screening suggests that the contaminant-bearing soil <br /> has been completely removed, Cambria collects soil samples from the excavation sidewalls and bottom <br /> for confirmatory analysis at a State certified analytical laboratory. <br /> The soil samples are collected in steam cleaned brass or steel tubes from either a driven split-spoon type <br /> sampler or the bucket of a backhoe or excavator. Samples are collected from the excavation cavity as <br /> soon as possible following excavation completion. When a backhoe or excavator is used for sampling, <br /> approximately three inches of soil are scraped from the surface and the tube is driven into the exposed <br /> soil,preferably near the bucket teeth. <br /> Upon removal from the sampler or the backhoe, the samples are trimmed flush, capped with Teflon tape <br /> and plastic end caps, labeled, logged and refrigerated for delivery under chain of custody to a State <br /> certified analytical laboratory. <br /> My Computer/Misc.on server(F:)/remplates/SOPs <br />