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CAMBRIA <br /> STANDARD PIPING AND DISPENSER REMOVAL SAMPLING PROCEDURES <br /> Cambria Environmental Technology, Inc. (Cambria) has developed standard operating procedures for <br /> collecting soil samples during petroleum dispenser and piping removal. These procedures ensure that the <br /> samples are collected,handled,and documented in compliance with California Administration Code Title <br /> 23: Waters; Chapter 3: Water Resources Control Board; Subchapter 16: Underground Storage Tank <br /> Regulations(Title 23). Cambria's sampling procedures are based on guidelines contained in the California <br /> State Regional Water Quality Control Board Tri-Regional Staff Recommendations for Preliminary <br /> Evaluation and Investigation of Underground Tank Sites dated August 10, 1990. <br /> Piping and Dispenser Removal Sampling <br /> The objective of sample collection during routine dispenser and piping removals is to determine whether <br /> hydrocarbons or other stored chemicals have leaked to the subsurface. We collect one soil sample from the <br /> native soil beneath each dispenser unit, at each piping elbow, and at every 20 ft of product piping, as <br /> applicable. <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. When a backhoe is used,approximately three inches of soil are scraped <br /> from the surface and the tube is driven into the exposed soil. <br /> Upon removal from the split-spoon sampler or the backhoe, the samples are trimmed flush, capped with <br /> Teflon sheets and plastic end caps, labeled, logged and refrigerated for delivery under chain of custody to <br /> a State certified analytic laboratory. <br />