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15 May 2019 <br />AGE Project No. 14-3002 <br />Page 3 of 17 <br />• B19, B21 and B22 were advanced to 10 feet bsg and B18 and B20 were advanced <br />to 15 feet bsg along the eastern property boundary to define the limits of buried <br />waste and collect samples for site assessment. <br />• B23, B24, B25, B28, and B29 were advanced to depths between 10 and 20 feet <br />bsg north of the former power plant area to locate buried waste and collect samples <br />for site assessment. <br />• B26 and B27 were advanced in the northern portion of the site along the western <br />property boundary to locate buried waste and collect samples for site assessment. <br />• B30 and B32 were advanced to 5 feet bsg to collect shallow soil samples in the <br />former power plant transformer areas. <br />• B31, B33, B34, B35, and B43 were advanced to depths between 10 and 18 feet <br />bsg in the former power plant area to locate buried waste and collect samples for <br />site assessment. <br />• B36, B40, and B41 were advanced to depths between 10 and 18 feet bsg in the <br />former power plant area to define the limits of buried waste and collect samples <br />for site assessment. <br />• B37, B38, B39, and B42 were advanced to 10 feet bsg in the former power plant <br />area to define the limits of buried waste; no samples were analyzed from these <br />borings. <br /> <br />Additionally, borings B23, B31, B35, and B40 were advanced to total depths of 18 and 20 <br />feet bsg in the former power plant area and the area north of the power plant to collect <br />groundwater samples. These locations are at higher surface elevations then the <br />surrounding area and groundwater is encountered at approximately 15 feet bsg. <br />Groundwater is encountered at approximately 10 feet bsg across the remainder of the <br />site. <br /> <br />The borings were advanced utilizing a track-mounted, Geoprobe 7822DT direct-push <br />probing unit equipped with 1.0- or 2.0-inch diameter probing rods. The Geoprobe <br />advances soil probe borings using a hydraulic hammer to drive sampling tools to specified <br />depths. Soil boring locations are depicted in Figure 2. <br /> <br /> <br />3.1. SOIL SAMPLE COLLECTION <br /> <br />Soil samples were collected continuously from surface grade to total depths in borings B1 <br />through B43. Soil samples were collected in five-foot sections using a 1- or 2-inch <br />diameter Geoprobe soil sampling assembly loaded with five-foot long acetate sleeves. <br />After collection, the acetate sleeves were cut open to expose the entire soil core to classify <br />the soil and inspect the core for waste. Selected soil and waste samples were collected <br />by hand-packing the material into precleaned and certified, 4-oz, Teflon-lined closure, <br />wide-mouth clear glass sample containers (sample jars). Sample jars were labeled with