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McDowell&Davis Towing Subsurface Soil&Groundwater Investigation Page: 3 the site could be considered for a low-risk closure, a groundwater investigation would have to be conducted. 2.0 WORK PLAN M.J. Kloberdanz & Associates proposes to drill 3 soil borings in the vicinity of the former underground tanks (Figure 2) to a depth at least ten feet below groundwater (75 feet). All three borings will be completed as 2-inch groundwater monitoring wells. The wells will surround the former tanks and fuel island to demonstrate the lateral limits of the soil and groundwater contamination on site. One of the wells will be located in the suspected down gradient direction to the northwest. Underground and overhead utilities information gathered prior to drilling may effect the actual boring locations. A maximum of five soil samples will be obtained from each boring for laboratory analysis and will include a sample from the capillary zone and any apparently contaminated areas above or below groundwater. All wells will be surveyed for elevation so that a gradient can be determined. Rinse water and drill-cutting disposal will be the responsibility of the client. A Technical Report, which documents and discusses all of the activities and laboratory data involved with the project to date, will be generated at the conclusion of the project. The report will include an executive summary of the investigation activities and results, a tabulation of all soil and groundwater data, graphical representation of the geologic and chemical results, laboratory data sheets, and any recommendations for further work if data warrants it. The report will be endorsed by the licensed professional responsible for the work. 2.1 Drilling Permits will be obtained as necessary for all wells (including borings) before drilling begins. The soil boring will be accomplished using a mobile mounted drilling rig employing the use of a hollow stem flight auger no less than 3 1/4- inch i.d. and 8 7/8 o.d. All drilling equipment will be thoroughly steam-cleaned before drilling begins, to prevent the introduction of contamination from off site, and between borings to prevent cross contamination. The borings will be logged under the direct supervision of a registered professional using the Unified Soil Classification System. The color, texture, moisture, plasticity (if applicable), consistency of the earth materials, pertinent soil or bedrock characteristics, and any evidence of contamination will be noted. All water-bearing zones and the depths at which they were encountered will be noted on these logs.