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tw %WO ..W <br /> f <br /> KLEINFELDER <br /> 1.s <br /> boring and the bottom (third) tube sealed with aluminum foil and tight fitting plastic caps. <br /> The sealed tube will be labeled and immediately stored in a iced cooler. The selected soil <br /> #' samples will be delivered under chain-of-custody to the State/EPA certified mobile <br /> analytical laboratory. The remaining soil samples will be retained in refrigerated storage <br /> ;• for future reference or analysis. <br /> 2.1.1 QUALITATIVE FIELD SCREENING <br /> V <br /> A flame ion detector (FID) sensitive to total petroleum hydrocarbons, will be used to <br /> screen each soil sample collected from the soil borings. Calibration will be performed <br /> prior to use in the field and checked at regular time intervals. The field screening of the N <br /> "' soil samples with the FID is intended to provide a qualitative indication of the presence of <br /> petroleum hydrocarbons. Selection of soil samples to be submitted for chemical analysis <br /> kw will be based on the FID results. The screening procedure will consist of scraping the top � <br /> soil layer collected in the middle tube to expose fresh soil and scanning the vapors emitted <br /> from the soil. The vapor reading will be noted and evaluated at the completion of the field S <br /> work portion of the investigation to select samples for chemical analyses. <br /> 16m For the protection of the field crew, the FID will also be used to measure the total volatile <br /> concentrations in the breathing zone prior to and during the drilling of the soil borings. <br /> Total ionizable hydrocarbon readings in excess of 5 ppm above background in the <br /> breathing zone will necessitate respiratory protection measures. Additionally, a vapor <br /> badge will be worn by the most exposed employee to record exposure during the drilling. <br /> This procedure requirement will be outlined in a field safety plan for this project. <br /> 2.1.2 STORAGE AND HANDLING OF CUTTINGS <br /> All soil cuttings generated during the drilling of the borings will be containerized in 55- <br /> gallon drums and secured with lids. Soil cuttings will be segregated by individual boring <br /> location using a minimum of one 55-gallon drum per boring location. Each drum will be <br /> labeled using a permanent marker identifying: <br /> o project property location <br /> o soil boring location (B-1, B-2, etc.) <br /> o drilling date <br /> o range of FID readings from soils contained within the drum <br /> 146-88-2051 3 <br />