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KLEINFELDER <br /> tATTACHMENT A <br /> KLEINFELDER FIELD PROTOCOL <br /> IE P I <br /> A-1.1 FIELD <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, <br /> assemble the necessary sample containers, and check, calibrate and clean equipment to be <br /> used in the field Underground Service Alert (USA) is unformed of the boring locations and <br /> the scheduled date of drilling, or a utility-locating firm is employed to check the boring <br /> locations <br /> A-Z DRILLING AND SUBSURFACE SOIL__S__ANXI, <br />' A-2.1 Drilling <br />' Soil borings are advanced using a truck-mounted drill ng equipped with hollow stern <br /> augers Subsurface soil samples are collected from the soil bornngs During drilling, an <br /> experienced environmental geologist or engineer classifies the soil, logs the stratigraphy of <br /> the borings, and collects soil samples <br />' A-2.2 Qualitative Field 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 bonngs 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 <br /> the volatile concentrations in the breathing zone prior to and during the drilling: of the <br /> borings Total ionizable hydrocarbon readings in excess of 1 ppmv may necessitate <br /> respiratory protection for the affected crew members This requirement is included in the <br />' complete field health and safety pian developed for the protect prior to the start of field <br /> work <br /> DH and 7FJ94 Page i of v <br /> Copyright 1994, Kleinfelder Inc <br />