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27 December 2021 dvanc <br /> An Employee—owned Company <br /> Project No. 21-6680 <br /> Page 2 of 4 <br /> Based on absence of assessment data, AGI recommended preforming a Phase II <br /> Environmental Site Assessment to collect soil and gr data and to determine if any <br /> subsurface impacts are present due to historical activities on the subject property. <br /> 2.0. SCOPE OF WORK AND PROCEDURES <br /> AGI proposes to advance a total of five (5) soil borings at the site to total depths of 20 <br /> feet below surface grade (bsg, 3 borings) and 15 feet bsg (2 borings) for the collection of <br /> soil samples. Borings will be advanced near the former locations of the clarifiers and <br /> UST. <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 />