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k%J KLEINFELDER <br />} <br /> File No. 20-1008-52.A01 <br /> May 16, 1994 <br /> P _ <br /> - I <br /> i 1 <br /> ATTACHMENT A <br /> KLEIINFELDER FIELD PROTOCOL <br /> it <br /> t <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 plan, coordinate the work to be done with their supervisor, I <br /> assemble the necessary sample containers, and check, calibrate and clean equipment to be used <br /> in the field. Underground Service Alert (USA) is informed of the boring locations and the <br /> scheduled date of drilling, or a utility-locating firm is employed to check the boring locations. <br /> A-2 DIALLING AND SUBSURFACE SOIL SAM_PLIN, G <br /> z A-2.1 Drilling <br /> i <br /> t <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 /> A-2.2 Qualitative Field Screening' ( jj <br /> An organic vapor detector, such as a Photovac TIP, using a photo-ionization detector (PlID) or <br /> } a Foxboro. flame-ionization detector (FID), is used to provide a qualitative screening of each <br /> f soil sample collected from the borings. The organic vapor detector measures ionizable <br /> compounds in the air in parts per million by volume (ppDiv). 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 organic <br /> 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 /> 11 <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 /> ETH:md 1E/94) 1 <br /> r. Copyright 1994 Kleinfelder,Inc. <br /> r <br />