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attached. No odors consistent with anthropogenic hydrocarbons were noted during placement of the borings, nor was groundwater encountered. Following sample acquisition and withdrawal of the probe, each of the borings was backfilled with native soil to the base of the asphalt pavement. The remaining void was then filled with a cold asphalt patch. All sampling equipment was thoroughly scrubbed with Alconox solution followed by a distilled water rinse prior to being brought on site and between all samplings. PHASE II-A. . .SAMPLE; ANALYSIS Soil samples acquired from on site borings were subsequently submitted for uncertified analysis using thin layer chromato- graphy (TLC) and Hanby Direct Extraction. The TLC analysis uses a small amount of the soil sample which is first weighed and then mixed with a measured volume of hexane to extract any hydrocarbon contaminant which may be present. A precise amount of the extract is then removed and placed upon a TLC plate. The plate is then inserted into a separation tank, subsequently removed, and examined with long and shortwave ultraviolet (UV) light and/or iodine chamber. The intensity of the pattern thus obtained is compared with the intensity of the pattern of an action level standard. The Hanby Direct Extraction system, ` in turn, involves direct solvent extraction and subsequent colormetric analysis against known standards provided by the manufacturer. y The results of the referenced analyses for the soil samples ` acquired at the Hutchins Avenue site may be summarized as follows: CHART I / Sample Number Depth b s TLC Result Hanby Result B1KVA 10 feet N.D. N.D. B2KVA 8 feet 1400 ppm B3KVA 8 feet 1600 ppm > 1600 ppm B4KVA 10 feet N.D. N.D. * Probe refusal due to the presence of hard rock prevented the acquisition of sufficient soil to conduct theHanbyprocedure. N.D. . . .Below the limits of detection (approximately 30 ppm) . 4 .