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24 February 2021 AdvaencdGeo <br /> ny <br /> Project No. 20-6314 ' <br /> Page 2 of 4 <br /> be advanced along the western property boundary, adjacent to the unassessed gasoline <br /> station, to determine if the subject property has been impacted by the adjacent property. <br /> Proposed soil boring locations are depicted in Figure 2. <br /> The proposed scope of work includes the following tasks: <br /> • Permitting and pre-field work activities. <br /> • Soil boring advancement and installation of soil-vapor wells. <br /> • Collection of soil-vapor samples. <br /> • Boring Abandonment <br /> • Preparation of a report of findings. <br /> 2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable drilling and site assessment permits will be obtained from the EHD. As <br /> required by EHD permitting, a health and safety plan will be prepared in accordance with <br /> Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities <br /> (National Institute for Occupational Safety and Health Administration, U.S. Coast Guard <br /> and U.S. Environmental Protection Agency, 1985). Prior to drilling activities, each <br /> proposed drilling location will be clearly marked, and a utility clearance obtained through <br /> Underground Service Alert. <br /> 2.2. SOIL VAPOR POINT INSTALLATION, SAMPLING AND ANALYSIS <br /> AGI proposes to advance three (3) soil borings (SV1 through SV3) to 10 feet bsg utilizing <br /> a truck-mounted Geoprobe direct-push drilling rig equipped with 1.45-inch diameter <br /> stainless steel probing rods. The Geoprobe advances soil probe borings using a hydraulic <br /> hammer to drive sampling tools to specified depths. Soil-vapor samples will be collected <br /> from borings SV1 through SV3 at depths of approximately 5 feet and 10 feet bsg. <br /> Soil samples will be collected at five and ten feet bsg using a 1.45-inch diameter <br /> Geoprobe soil sampling assembly loaded with a two-foot acetate liner. Soil encountered <br /> in the borings will be visually classified by AGI personnel in accordance with the Unified <br /> Soil Classification System (USCS)and field-screened for the presence of volatile organic <br /> compounds using an organic vapor meter(OVM), equipped with photo-ionization detector <br /> (PID) pre-calibrated to isobutylene. <br /> Upon reaching total depth (10 feet bsg), approximately six inches of #2/12 sand will be <br /> placed at the bottom of the borehole for the vapor implant to be placed on. The first vapor <br /> points (10-foot point) will be installed by lowering a '/4-inch diameter, 2-inch-long <br />