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hn KLEINFELDER <br /> kf <br /> File No. 20-1008-52.A01 j <br /> 4 May 16, 1994 <br /> r <br /> E <br /> f <br /> ATTACHMENT A <br /> KLEDU ELDER FIELD PROTOCOL <br /> 1 <br /> A-1.1 FIELD PREPARATION <br /> j, <br /> Before performing work in the field, environmental staffs) will review the scope of work, <br /> prepare a health and safety plank coordinate the work to be done with their supervisor, <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 /> �-2 DRILLING AND SUBSURFACE SOIL SAMPLING <br /> iE ! <br /> A-2.1 Drilling I <br /> Soil borings are advanced using a truck-mounted drill rig equipped with hollow stem augers. E <br /> Subsurface soil samples are collected from the soil boringssl During drilling, an experienced I <br /> environmental geologist or engineer classifies the soil, logs the stratigraphy of the borings, and I <br /> collects soil samples. <br /> I <br /> A-2.2 Qualitative Field Screening <br /> An organic vapor detector, such as:a Photovac TIP, using a1ilphoto-ionization detector (PID) or <br /> a Foxboro flame-ionization detector (FID), is used to provide a qualitative screening of each <br /> soil sample collected from the borings. The organic vapor detector measures ionizable <br /> compounds in the air in parts per million by volume (pp Field Field calibration is performed <br /> using a calibrated span gas. Ambient air is used to set he instrument to zero. The soil <br /> contained in the cone of the sampler or in a brass tube is exp?sed.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 /> k <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 /> b <br /> ETH:md 1E/94) 1 y <br /> Copyright 1994 Kleinfelder,Inc. <br /> ® S <br /> ;�• Ili <br />