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Groundwater Sampling Each exploratory boring was sampled for groundwater. The ground water samples collected from the boreholes were used for a rapid reconnaissance of the groundwater contamination. The boreholes were sampled and a brief summary of these procedures follows: Each borehole was advanced into the capillary fringe and uppermost portion of the aquifer and temporarily cased with one-inch PVC casing The water entering the borehole was sampled using a clean bailer, and carefully poured into the appropriate laboratory prepared container with minimum cavitation. Field depth to groundwater measurements were made to the nearest one- one hundredth of one foot at the prevailing surface grade, and also checked for the presence of separate phase product. Each water sample was labeled, logged onto a chain-of-custody form, and placed in a chilled ice chest. Upon completion of the borehole drilling and information collection, the boreholes were backfilled with grout, poured into the borehole, and was witnessed by a representative of PHS-EHD. Subsurface Conditions Six exploratory soil borings were advanced on-site at the locations shown on Figure 1. The site is underlain by clayey soils, which locally contain thin fine grained sand laminae. The aquifer is composed of silty clay and clayey sand and the lithology showed that the sediment became sandier to the west along 10th Street. The sediment becomes laterally sandier to the west along the northern side of 10th Street Groundwater was encountered in each borehole at depths of about 10-feet, and water appeared to be unconfined to semi-confined and entered some boreholes slowly. The boreholes were advanced to a maximum depth of 12-feet, with one borehole advanced to 15-feet, all into an underlying clay strata which is interpreted to be a continuous aquitard in this vicinity (see Figure 2). Chemical Analysis and Results Five soil and six groundwater samples were analyzed at a State certified analytical laboratory Selected samples were tested for the following; Total Petroleum hydrocarbons as Gasoline (TPHG) and, Benzene (B), Toluene (T), Ethylbenzene (E), Xylene (X) and methyl-tertial-butyl-ether (MTBE) using EPA Methods 5030/8015 and 8020. The chain-of-custody documentation and laboratory analytical results are presented in Appendix D The results are attached and listed below to Tables 1 and 2. • WMAutomotrve Project No. 4070-T Page 4