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Rif r '= <br /> Cs <br /> E . <br /> r GROUNDWATER TECHNOLOGY <br /> STANDARD OPERATING PROCEDURE. <br /> CONCERNING BOIL BAMPLING KMODOWGX <br /> BOP 14 <br /> Boil samples should be Collected and preserved in <br /> accordance With Groundwater Technology Laboratory's <br /> w- Standard Operating Procedure (GTL SOP 15) concerniag <br /> Soil Sample Collection and Handling vhen_ Sampling for <br /> 4 volatile Organics. A hollow stem soil auger should be <br /> used to drill to the desired sampling depth. A standard <br /> a inch diameter split spoon sampler 16 inches in length <br /> shall be used to collect the samples. The samples are <br /> contained in 2 inch diameter by 5 inch long thin walled <br /> brass tube liners fitted into the split spoon sampler <br /> (three per sampler) . <br /> The split spoon sampler should be driven the full depth <br /> of the apoon into the soil using a 140 pound hammer. <br /> The spoon shall than be extracted from the borehole and <br /> the brass tube liners containing the soil sample removed <br /> from the samplQr. The ends of the liner tubes should be <br /> ' immediately covered with aluminum foil, sealed with a <br /> teflon or plastic cap, and then taped with duct tape. <br /> After being properly identified with sample data entered <br /> on a standard chain of custody form the samplas shall be <br /> placed on dry ice (maintained below 4'c) and transported <br /> - to the laboratory within 24 hours. <br /> One of the three soil samples retreived at each sample <br /> depth shall be analyzed in the field using a photoioni- <br /> cation detector and/or explosimeter. The purpose of the <br /> field analysis is to provide a means to choose samples <br /> „ to be laboratory analyzed for hydrocarbon concentrations <br /> and to enable comparisions between the field and <br /> laboratory analyses. The soil sample shall be sealed in <br /> a plastic bag and placed in the sun to accelerate the <br /> vaporization of volatile hydrocarbons from the soil. one <br /> of the two field vapor instruments shall be used to <br /> quantify the amount of hydrocarbon released to the air <br /> from the soils. The data shall be recorded on the drill <br /> r� loge at the depth corresponding to the sample point. <br /> 1 CrROtAMATER <br /> TuNNoLoo 11C <br /> n� <br /> f, . <br />