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4.0 WORK PLAN The objectives of the proposed scope of work are to ' • Further define the lateral extent of impacted soil and groundwater, • Test the feasibility of soil and groundwater remedial alternatives To achieve these objectives, Ramage Environmental proposes to • Install three additional groundwater monitoring wells, • Install one nested soil vapor extraction well, and one nested air sparge/soil vapor extraction well, • Conduct soil vapor extraction and air sparge feasibility tests 41 Project Planning and Permitting Prior to initiating fieldwork, a site-specific health and safety plan addendum will be prepared according to 29 CFR 1910 120 The health and safety plan will include safety procedures, chemical hazard information, site safety officers, and a medical emergency location To perform the drilling scope of work, a well permit will be obtained from EHD Since all of the work is to completed on-site, neither off-site access agreements nor encroachment permits will be required At least two working days prior to any field work, Ramage Environmental will notify EHD 1 so that inspections can be scheduled Underground Service Alert will also be notified so members can mark their underground utilities 42 Groundwater Monitoring Well Installations 1 To further investigate the distribution of impacted soil, define the lateral extent of impacted groundwater at the water table, delineate the stratigraphy of shallow subsurface soils, and expand the groundwater monitoring network at the site, three additional groundwater monitoring wells will be installed The proposed well locations will be approximately 70 feet west, 180 feet south, and 225 feet southeast of the former UST #3 (Figure 3) The proposed well to the west will be located ' for use as an observation well during the proposed remedial feasibility tests The other two proposed wells are positioned further from the source area to attempt to define the lateral extent of Impacted groundwater 11