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11 August 2004 AGE-NC Project No. 04-1180 Page 5 of 8- 4.1. SOIL BORINGS The soil boring will be advanced utilizing a truck-mounted Hollow-stem-drill rig with 8.25-inch diameter hollow-stem augers. The proposed soil boring .location is illustrated in Figure 2. Soil samples will be collected at five-foot intervals beginning at 5 feet bsg to total depth. Relatively undisturbed soil samples will be collected in each of the borings utilizing a California modified split- spoon sampler fitted with 2-inch diameter, 6-inch long brass sleeves. Upon removal from the sampler, the sample sleeves will be separated with a knife. The exposed ends of the second sleeve will be covered with Teflon sheets, capped and sealed with tape. Soils sampled in the borings will be visually classified by an AGE geologist in accordance with the Unified Soil Classification System (USCS). Additionally, soil samples will be field screened for the presence of volatile organic compounds using an organic vapor meter(OVM),equipped with a photo ionization detector(PID). Soil sample descriptions and OVM readings will be recorded on a log for each boring. Following sample collection,each preserved sample sleeve will be labeled with the boring location, depth,time, date and sampler's initials. Appropriately sealed and labeled samples will be placed in a chilled container under ice and transported under-chain of custody procedure to a DHS-certified laboratory. 4.2. WELL.COMPLETION The ground water monitoring wells will be completed utilizing 1-inch diameter schedule 40 . polyvinylchloride.(PVC) 0.010-inch slotted well screen and blank well casing. A 20-foot length of well screen is anticipated for installation ofthemonitoring well. After installing the well casing in each pilot boring, a filter pack material consisting of pre-washed #2/12 Lonestar sand will be added through the augers over the screen interval to approximately two feet above the screened interval. Following placement of the filter pack, the well will be surged to assist in settling the filter pack. Additional sand will be added.if settling occurs. A nominal two-foot bentonite seal (pell plug non-coated bentonite chips)will be placed above the filter pack to minimize the potential for grout penetration into the screened section of the well. The bentonite seal will be formed by pouring bentonite chips into the annulus and allowing them to settle on the filter pack. The bentonite pellets will be allowed to hydrate for a minimum of one-half hour prior to grouting. The remaining annular space will be filled within one foot of the ground surface with a cement grout. The grout mixture will consist of Type PH portland neat cement and not more than 6 gallons of water per 94-pound sack of cement. The grout will be placed by pumping through tremie pipe. Advanced GeoEnvironmental,Inc.