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1 x <br /> s, <br /> 3 0 REVISED WORK PLAN, ADDITIONAL SITE INVESTIGATION <br /> The objectives of the proposed scope of work are to further define the lateral and vertical extent of <br /> impacted soil and groundwater beneath the site To achieve these objectives, Ramage <br /> Environmental proposes to install a total of five additional groundwater table monitoring wells, and <br /> to conduct cone penetration testing (CPT) and depth-discrete soil and groundwater sampling at <br /> one location <br /> 3 1 Project Planning and Permitting <br /> Prior to initiating fieldwork, a site-specific health and safety plan addendum will be prepared <br /> according to 29 CFR 1910 120 The health and safety plan will include safety procedures, <br /> chemical hazard information, site safety officers, and a medical emergency location <br /> To perform the proposed scope of work, drilling permits will be obtained from EHD Since all of <br /> the drilling locations are on the airport property, neither encroachment permits nor private property <br /> ' access agreements will be required <br /> At least two working days prior to the drilling field work, Ramage Environmental will notify EHD so <br /> that inspections can be scheduled Underground Service Alert will also be notified so that <br /> member utilities can mark their underground services <br /> 32 Groundwater Monitoring Well Installations <br /> To further investigate the distribution of impacted soil, define the lateral extent of impacted <br /> groundwater at the water table, delineate the stratigraphy of shallow subsurface soils, and expand <br /> the groundwater monitoring network at the site, five additional groundwater monitoring wells will <br /> be installed As shown on Figure 2, the proposed well locations are positioned to attempt to <br /> surround the known plume of impacted groundwater <br /> 3 2 1 Monitoring Well Construction, Development and Su_rvev <br /> ll all of the wells to total de <br /> A C-57 licensed contractor will nista the of approximately 60 feet bgs,p <br /> using a truck-mounted drill rig, and 8-inch diameter hollow stem augers The wells will consist of <br /> ' 20 feet of two-inch diameter, Schedule 40, flush-threaded and machine-slotted (0 020-inch) PVC <br /> well screen <br /> 8 <br /> 1 <br />