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05 May 2021 AdvaenocEdGeo <br /> Project No. 21-6440 An <br /> wned Company <br /> Page 2 of 4 <br /> groundwater samples will be collected from each boring. Selected samples should be <br /> submitted to a certified laboratory for analysis. <br /> 2.0. SCOPE OF WORK AND PROCEDURES <br /> AGI proposes to advance a total of ten (10) soil borings at the site. Borings will be <br /> advanced to 10-12 feet bsg for the collection of soil and grab groundwater samples. <br /> Borings will be advanced in the areas of the former USTs, dispenser islands, along the <br /> south side of the property, and in the areas of the septic tanks and distribution fields. <br /> Proposed boring locations are illustrated 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 sample collection. <br /> • Boring abandonment. <br /> • Report preparation. <br /> 2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable site assessment drilling permits will be obtained from the EHD. Also, a site- <br /> specific Health and Safety Plan will be prepared prior to field work. Prior to mobilization, <br /> each soil probe boring location will be clearly marked, and a utility clearance obtained <br /> through Underground Service Alert (USA/811). The EHD will be contacted at least 72 <br /> hours prior to conducting investigation activities to coordinate a grout inspection. <br /> 2.2. SOIL BORING ADVANCEMENT AND SAMPLING <br /> AGI proposes to advance five (5) soil borings at the site utilizing a truck-mounted <br /> Geoprobe 5400 direct-push probing unit equipped with 1.45-inch diameter probing rods. <br /> The Geoprobe advances soil probe borings using a hydraulic hammer to drive sampling <br /> tools to specified depths. <br /> Soil samples will be collected at discrete five-foot intervals beginning at five feet bsg using <br /> a 1 .45-inch Geoprobe soil sampling assembly loaded with a two-foot acetate liner. Upon <br /> sample retrieval, a selected portion of the liner will be cut, and the ends will be covered <br /> with Teflon sheets, capped, and sealed with tape. Appropriately sealed and labeled <br /> samples will be placed in a chilled container with ice and transported under chain-of- <br /> custody procedure to a California Environmental Laboratory Accreditation Program <br /> (ELAP)-certified laboratory. Each sample will be labeled with boring designation, depth, <br />