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kq KLEINFELDER <br /> APPENDIX A <br /> KLEINFELDER FIELD PROTOCOL <br /> A-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) also is contacted prior to work with the boring locations and <br /> the scheduled date of drilling, or a utility locating firm is employed to check the boring locations <br /> A-2 DRILLING AND SUBSURFACE SOIL SAMPLING <br /> A-2 I GEOPROBE PROCEDURES <br />'i <br /> Geoprobes will be driven and sampled by a subcontractor to Kleinfelder An attempt to penetrate <br /> the asphaltic concrete at each location will be made If such penetration is not possible, coring <br /> will be performed at an additional cost agreed upon by the client prior to commencement <br /> Samples will be collected in accordance with the proposal <br /> A-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 is exposed and screened with the organic vapor detector The vapor reading is noted as <br /> the field screening result <br /> For the protection of the field crew, the organic vapor detector also is used to measure the <br /> volatile concentrations in the breathing zone prior to and during the installation of the <br /> Geoprobes 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 plan developed for the project prior to the start of field work <br /> 23-482276-BOO/CR96S276 A -I October 17, 1996 <br /> Copyright 1996 Kleinfelder Inc <br />