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SEP-23-94 FRI 18.56 KLEINFELDER FAX NO. 2089480621 P, 11 <br /> File No. 20-1147-56.E01 ■ K LEI N F f LD ER <br /> September 19, 1994 <br /> ATTACHMENT A <br /> KLEINFELDER FIELD PROTOCOL <br /> A-1.1 FIELD PREPARATION <br /> Before performing work in the field, environmental staff will review the scope of work, <br /> prepare a health and safety pian, coordinate the work to be done with their supervisor, <br /> assemble the necessary sample containers, and check, calibrate and clean equipment to be <br /> used in the field. Underground Service Alert (USA) is informed of the boring locations and <br /> the scl-ieduled elate of drilling, or a utility-locating firm is employed to check the boring <br /> locations. <br /> ,-2-2 DRI1,1,I_NG AND SUBSURFACE_SOIL SAMPLING <br /> A-2.1 Drilling <br /> Soil borings are advanced using a truck-mounted drill rig equipped with hollow stern augers. <br /> Shallow borings may be advanced using a hand auger (as applicable). Subsurface soil <br /> samples are collected from the soil borings. During drilling, an experienced environmental <br /> geologist or eDginccr classifies the soil, logs the stratigraphy of the borings, and collects soil <br /> samples. <br /> A-2.2 Qualitative held Screening <br /> An organic vapor detector, such as a Photovac TIP, using a photo-ionization detector (PID) <br /> or a Foxboro flame-ionization detector (FID), is used to provide a qualitative screening of <br /> each soil sample collected from the borings. The organic vapor detector measures ionizable <br /> compounds in the air in parts per million by volume (ppmv). Field calibration is performed <br /> using a calibrated span gas, Ambient air is used to set the instrument to zero. The soil <br /> contained in the cone of the sampler or in a brass tube is exposed and screened with the <br /> organic vapor detector. The vapor 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. <br /> Total ionizable hydrocarbon readings in excess of 1 ppmv may necessitate respiratory <br /> protection for the affected crew members. This requirement is included in the complete field <br /> health and safety plan developed for the project prior to the start of field work. <br /> ETff.•md 14194 <br /> Copyrigh! 1994 Kleinjeider, Inc page 1 Of 3 <br />