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AdvancedGeo <br />Environmental <br />MOM <br />05 January 2018 <br />AGE Project No. 18-4265 <br />Page 2 of 6 <br />information collected at nearby sites, AGE does not anticipate that groundwater will be <br />encountered during this investigation. <br />To evaluate if the former USTs, the current oil/water separator, and in-ground lifts have <br />impacted subsurface conditions at the site, AGE has prepared the following work plan. <br />Procedures for soil and soil-vapor, and groundwater sample collection are described in <br />detail below. <br />SCOPE OF WORK <br />AGE proposes to advance a total of fourteen (14) soil borings at the site in the following <br />locations: <br />Ten (10) soil borings near each of the existing and former in-ground hydraulic lifts. <br />Each boring will be advanced to a total depth of ten (10) feet bsg. Soil samples will <br />be collected from depths of 5 and 10 feet from each boring. <br />One (1) soil boring near the existing oil-water separator to a total depth of 10 feet <br />bsg. Soil samples will be collected from depths of 5 and 10 feet from the boring. <br />Two (2) soil borings in the former UST areas. One (1) boring near the former fuel <br />UST area, and one (1) boring near the former waste oil UST area. Each boring will <br />be advanced to depths of 20 feet bsg. Soil samples will be collected from each boring <br />at depths of 5, 10, 15 and 20 feet. Additionally, soil-vapor samples will be collected <br />from the three (3) borings advanced near the former UST and dispenser locations. <br />Soil-vapor samples will be collected in Summa Canisters from a depth of 5 feet bsg. <br />One (1) boring near the former fuel dispenser island to a total depth of 5 feet bsg. <br />Soil samples will be collected from 5 feet bsg. <br />Proposed boring locations are depicted in Figure 2. <br />Proposed borings will be advanced using a Geoprobe 5400 direct-push probing unit. <br />Samples will be submitted to a California Department of Public Health (CDPH)-Certified <br />laboratory and will be analyzed for: <br />Total petroleum hydrocarbons (TPH) in accordance with EPA Method 8015 (soil <br />only); <br />Polychlorinated bi-phenols (PCBs) in accordance with EPA Method 8082 (soil only); <br />Volatile organic compounds (VOCs) in accordance with EPA Method 8260B (soil <br />only); <br />Oil and grease in accordance with EPA Method 1664 (soil only); <br />VOCs and in accordance with EPA Method TO-15 (soil vapor).