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Artesian Environmental Consultants, Inc. <br /> Standard Operating Procedures <br /> SOIL EXCAVATION AND SAMPLING <br /> Excavated soil is screened and segregated in the field using a vapor analyzing device such <br /> as a photo-ionization detector(PID) or organic vapor analyzer(OVA) Documentation of <br /> soil removal activities include field reports and photographs After the removal of soil <br /> having obvious staining, odor or detectable levels of organic vapors as detected on a PID or <br /> OVA, confirmatory soil samples in the walls and floor of the excavation will be selected at <br /> least every 20 feet laterally Additional samples will be selected on the recommendation of <br /> the geologist and regulator All sampling will be performed with a backhoe <br /> Soil samples for chemical analysis are collected in pre-cleaned, thin-walled tubes, typically <br /> 6-inches long and 2-inches in the outside diameter The sample tube is pushed into the <br /> native soil near the teeth of the backhoe bucket The brass tube is immediately capped on <br /> both ends with teflon tape, trimmed and hermetically sealed with plastic end caps The <br /> samples are then labeled and placed in individual see-through zip-lock plastic storage bags <br /> The samples are stored in an ice chest with crushed ice to maintain a constant temperature <br /> of 4 degrees Celsius A thermometer is kept in the ice chest to ensure that the proper <br /> temperature is maintained The samples are then delivered under chain-of-custody <br /> procedures to a state-certified hazardous materials testing laboratory The above mentioned <br /> procedures mini nize the potential for cross-contamination and volatilization of volatile <br /> organic compounds (VOCs) prior to chemical analysis <br /> i <br /> I <br />