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KLEINFELDER <br /> ATTACHMENT B <br /> KLEINFELDER FIELD PROTOCOL <br /> B-1.1 FIELD PREPARATION <br /> Before performing work in the field, environmental staff will review the scope of work, prepare a <br /> health and safety plan, coordinate the work to be done with their supervisor, assemble the <br /> necessary sample containers, and check, calibrate and clean equipment to be used in the field. <br /> Underground Service Alert (USA) will be informed of the boring locations and the scheduled <br /> date of drilling, or a utility-locating firm will be employed to check the boring locations. <br /> B-2 DRILLING AND SUBSURFACE SOIL SAMPLING <br /> B-2.1 Drilling <br /> Soil borings are advanced using a truck-mounted drill rig equipped with hollow stem augers. <br /> Subsurface soil samples are collected from the soil borings. During drilling, an experienced <br /> environmental geologist or engineer classifies the soil, logs the stratigraphy of the borings, and <br /> collects soil samples. <br /> B-2.2 Qualitative Field Screening <br /> An organic vapor detector, such as a Photovac TIP, using a photo-ionization detector (PID) or a <br /> Foxboro flame-ionization detector (FID), is used to provide a qualitative screening of each soil <br /> sample collected from the borings. The organic vapor detector measures ionizable compounds in <br /> the air in parts per million by volume (ppmv). Field calibration is performed using a calibrated <br /> span gas. Ambient air is used to set the instrument to zero. The soil contained in the cone of the <br /> sampler or in a brass tube is exposed and screened with the organic vapor detector. The vapor <br /> reading is noted as the field screening result. <br /> For the protection of the drilling crew, the organic vapor detector also is used to measure the <br /> volatile concentrations in the breathing zone prior to and during the drilling of the borings. Total <br /> ionizable hydrocarbon readings in excess of 1 ppmv may necessitate respiratory protection for <br /> the affected crew members. This requirement is included in the complete field health and safety <br /> plan developed for the project prior to the start of field work. <br /> 20-3978-O1.W36/2017P117 Page B-1 <br /> 0 1997,Kleinfelder,Inc. September 5, 1997 <br />