SU0004323 SSNL - Laserfiche WebLink

Home Browse Search

6. KLEINFELDER ` ATTACHMENT A KLEINFELDER FIELD PROTOCOL L L A-1 FIELD PREPARATION Before performing work in the field, environmental staff reviews the scope of work, prepares a L health and safety plan, coordinates the work to be done with their supervisor, assembles the necessary sample equipment containers, and checks, calibrates and cleans equipment to be used in the field. Underground Service Alert is also contacted prior to field work and is apprised of the marked boring locations and the scheduled date of drilling. In addition, a utility locating firm is sometimes employed to check the boring locations. A-2 SUBSURFACE SOIL SAMPLING A-2.1 Hand Auger Sampling L The hand auger will be used to advance the soil boring to the desired sampling depth. Soil ` samples are obtained by driving a 2 inch diameter by 6 inch long brass tube into the soil using a slide hammer, forcing soil into the brass tube. The ends of the bottom tube are covered with Teflon and sealed with tight fitting plastic caps. Each sample is individually labeled. The label ` includes Kleinfelder's name, job number, the date and time the sample was collected, the employee number of the individual who performed the sampling, and a unique five-digit sample identification number. A-2.2 Qualitative Field Screening An organic vapor detector, such as a Photovac TIP using a photo-ionization detector (PID) or a Foxboro flame-ionization detector (FID), 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 volume (ppmv). Field calibration is performed using a calibrated span gas such as 100 ppm isobutylene. Ambient air is used to set the instrument to zero. The soil contained in 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 field crew, the organic vapor detector also is used to measure the ` volatile concentrations in the breathing zone prior to and while collecting samples. Total ionizable hydrocarbon readings in excess of 1 ppmv may necessitate respiratory protection for the affected crew members. This requirement is included in the complete field health and safety plan developed for the project prior to the start of field work. r L 52495.E01/ST05R540/1713:Iv Page A-I 0 2005 Kleinfelder,Inc. May 27,2005 L