SITE INFORMATION AND CORRESPONDENCE_FILE 2

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Site Background Information: Chapin Brothers Investments,Inc. Page 16 of 19 ADDITIONAL SITE ASSESSMENT-2003 Soil samples were collected in November and December 2003 to determine the effectiveness of site corrective action and to aid in determination of the remaining hydrocarbon mass impacting soil beneath the on-site garage building. On 21 November,24 November and 01 December 2003,soil probe borings were advanced beneath the on-site garage building,an area that had not been sampled during previously site investigations. Five soil probe borings(CB6 through CB 10)were advanced at a 30 degree angle beneath the on-site garage building, to a vertical depth of 34 feet bsg, utilizing a van-mounted Geoprobe 5400 direct- push probing unit equipped with 1.25-inch diameter probing rods.Probe soil borings CB6 and CB7 were advanced under the north face of the building,and borings CB8,CB9 and CB 10 were advanced under the west face of the building; locations of the soil probe borings are illustrated on Figure 2. Continuous soil samples were retrieved using a Geoprobe four-foot macro core barrel loaded with one four-foot acetate sleeve. Soil samples were preserved by covering both ends of a separated, approximately 6-inch portion of the acetate sleeve with oil probe boring location,depth,time,date and sampler's initials. A total of forty-two soil samples were analyzed for: • Total petroleum hydrocarbons quantified as gasoline (TPH-g) by EPA Method 8015 Modified; • Benzene,toluene,ethyl benzene and xylene(BTEX)and methyl-tertiary butyl ether(MTBE) by EPA Methods 8021; and • Selected samples were analyzed for Methyl-tertiary butyl ether (MTBE), tertiary butyl alcohol(TBA),di-isopropyl ether(DIPE),ethyl tertiary butyl ether(ETBE)and tertiary amyl methyl ether(TAME) in accordance with EPA Method 8260 Modified. STRATIGRAPHY AND DEPTH TO GROUND WATER Soil descriptions from boring logs CB6, CB7 and CB8, supplemented with soil descriptions from previous site investigations,were utilized to construct the site geological model;laboratory analysis of the soil samples was utilized to assess the petroleum-hydrocarbon impact on soil. Silty clay was generally encountered from a depth of approximately 5 feet to between 15 and 17 feet bsg. A gray, generally silty fine sand was distributed at depths between 15 and 27 feet bsg on-site; off-site, the sand was generally distributed at depths between 20 and 30 feet bsg.A light green to blue green clay was usually encountered beneath the sand. Ground water was encountered at depths ranging from 17 feet to 20 feet bsg; once ground water was encountered,a hydrocarbon odor can be detected. Advanced GeoEnvironmental,Inc.