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i KLEIf*lFELDfR APPENDIX B TYPICAL KLEINFELDER FIELD PROTOCOL B-I FIELD PREPARATION B efore performing Nvork .in the field, environmental staff reviews the scope of work, prepares a health and safety plan, coordinates the %work to be doge with their supervisor, assembles the necessary sample equipment containers, and checks, calibrates and cleans equipment to be used in the field. Underground Service Alcrt (USA) is also contacted prior to field work with the marked boring locations and the scheduled date of drilling, in addition, a utility locating firm is sometimes employed to check the boring locations. .13-2 DRILLING AND SUI3SUItFACE SOIL SAMPLING B-2.1 Drilli� f� Soil borings are advanced Using, a truck-mounted drill ring, equipped with hollow stem augers. • Subsurface soil samples are collected frons the soil borings. While drilling, an experienced environmental geologist classifies the soil, logrs the stratigraphy of the borings, and collects soil. samples. B-2.2 Qualitative .Field Screeniwz An organic vapor detector. such as a l'hotovac "I'IP, using a photo-ionization detector (PID) or a Foxboro flame-ionization detector (173D)_ is used to provide a qualitative screening of each soil sample collected from the borings. The organic vapor detector measures ionizable compounds in the air in parts per million by \oluntic (ppmv). Field calibration is performed using a calibrated span gas such as 100 ppm isobutvlcne. Ambient air is used to set the instrument to zero. The soil contained i13 the cone of the sampler or in a brass tube is exposed and screened with the organic vapor detector. The vapor reading is noted as the field screening result. For the protection of the drilling crew. the organic vapor detector also is used to measure the volatile concentrations in the breathi.no zone prior to and while drilling the borings. Total ionizable hydrocarbon readings in excess of 1 ppmv may necessitate respiratory protection for the affected crew members. This requircment is included in the complete field health and safety plan developed for the project prior to the start of field work. 20-2864-02.G03/2019R032 Page B-1 January 14,1999 Copyright 1995. Kloini'elder_ Inc.