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3.0 WORK PLAN, REMEDIAL FEASIBILITY TESTING The objective of the proposed scope of work is to evaluate soil and groundwater remedial alternatives so that a preferred remedial alternative can be selected. To achieve this objective, Ramage Environmental proposes to install three soil vapor extraction (SVE)test wells and one air sparge (AS) test well, conduct pilot tests for soil vapor extraction and air sparging, and sample groundwater for microbial analysis so that monitored natural attenuation can be evaluated, 3.1 Project Planning and Permitting Prior to initiating fieldwork, a site-specific health and safety plan addendum will be prepared according to 29 CFR191 O.120. The health and safety plan will include safety procedures, chemical hazard information, site safety officers, and a medical emergency location, To install the four test wells, drilling permits will be obtained from EHD. Since all four wells are located on-site, neither private property access agreements nor encroachment permits will be required. At least two working days prior to any field work, Ramage Environmental will notify EHD so that inspections can be scheduled, Underground Service Alert will also be notified so that member utilities can mark their underground services, 3.2 Remedial Feasibility Test Well Installations To test the feasibility of soil and groundwater remedial alternatives, Ramage Environmental proposes to install three on-site soil vapor extraction wells and one on-site air sparge well, The locations of the proposed test wells are shown on Figure 2. 3.2.1 Soil VgRgr Extraction Test Wells To test the feasibility of remediating impacted vadose zone (i.e. unsaturated) soil, Ramage Environmental will supervise the installation of three soil vapor extraction test wells. Two of the SVE wells will be two-well nests and one of the wells will be a single-casing well. The nested StdE wells will be located west of the former UST complex, and the single-casing SVE well will be located north of the former UST complex, adjacent to former soil boring SB-4 (Figure 2). A C-57 licensed contractor will install the S wells using a truck-mounted drill rig, and hollow stem augers. The two nested wells will be installed in 1 0-inch diameter soil borings, and the single-casing well will be installed in an 8-inch diameter soil boring. All of the proposed wells will consist of two-inch diameter, Schedule 40, flush-threaded and machine-slotted (0,020-inch) polyvinyl chloride (PVC) well screens, and blank PVC casings. 9 tow