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FINDINGS Field Work The field work has been performed in general conformance with the detailed Ramcon Standard Procedures presented in the Appendix A. The borings have been drilled in the approximate locations shown on Plate 2. The borings generally engaged a sequence of fine sands, silty sands,and sandy clayey silts to the maximum 20-foot depth of exploration. The soils generally exhibited medium dense to dense and stiff consistencies. No notable discolorations, odors, or photoionization detector readings were observed during the drilling and soil sampling work. The subsurface conditions encountered during the drilling are summarized on the attached boring logs, Plates 3 through 8. During screening of the soil samples for evidence of contamination none was noted, so the sample obtained nearest to the capillary fringe was selected for chemical testing. The Boring 5 capillary-fringe sample was not recovered, so the mid-depth sample was selected for testing. Following the soil sampling work, each boring was over-drilled a few feet to allow groundwater to infiltrate for sampling. A new disposable bailer was then lowered through the hollow-stem augers and groundwater specimens were obtained and placed in appropriate containers. Chemical Testing Soil and groundwater samples selected for analysis were refrigerated and transported to a State-certified laboratory for testing. The test methods are indicated above under Specific Tasks and are presented on both the attached Table 1 and the appended lab reports. The test data indicate that none of the soil samples contained measurable petroleum hydrocarbons with the exception of Sample B-2-3 which revealed a trace of oil at a concentration of 12 parts-per-million(ppm). Metals were detected in the soil samples at very low concentrations,below levels of concern and at levels commonly attributed to natural occurrence. Groundwater testing revealed gasoline in two samples,diesel in three samples, and chlorinated solvents in four samples. No BTEX, MTBE, or metals were detected in any of the water samples. The compounds detected at each boring location are shown on Plate 1 with letters in parentheses next to each boring: (G)for gasoline; (D)for diesel;and(Sol.)for solvent. Detected concentrations are indicated on Table 1. Gasoline concentrations range from 200-850 parts-per-billion (ppb). Diesel levels vary from 62-160 ppb. Various chlorinated solvent concentrations range from 0.54-1500 ppb. The highest levels of solvents were detected in samples from Borings B-3 and B-5. This finding is somewhat curious considering that B-3 is located near the former waste oil tank area, and B-5 is situated near the former diesel tank area. Comparison of the detected concentrations to published regulatory levels indicate that the solvents cis-1,2-dichloroethene and trans-1,2-dichloroethene exceed State and EPA action levels . CONCLUSIONS The results of Ramcon's investigation indicate that groundwater is impacted with petroleum hydrocarbons and chlorinated solvents in the areas sampled. Solvent concentrations in water samples from two of the borings exceed regulatory action levels. The sporadic presence and concentrations of the various constituents do not appear to point to a singular source or trend. Little is known about the existing oil/water separator and whether it may play a role in the detected groundwater conditions. An Ramcon H:\WPDATA\1070-2JANDRSON\REPORTS\InvRep Page 3 of 4