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Page 4 Cabral—Mc Adams Property April 28,2006 Job No. 1828-092.01 RESULTS AND DISCUSSION GENERAL As shown on the attached Tables and on the laboratory reports, the data indicate that past use/handling of pesticides resulted in impairment of surface soils locally. It is noted, however, that soil impairment would appear to be limited to near surface soils (less than six to 12 inches in depth). Elevated concentrations of TPH as motor oil, lead, arsenic, and organochlorine pesticides were detected in surface soils primarily within or near the mentioned structures (outbuildings) on the property. The primary contaminants of concern appear to be arsenic, lead, and the organochlorine pesticides DDT and dieldrin. The concentrations of TPH as motor oil detected within surface soils are considered relatively low, and are typically not considered a significant health risk. ORGANOCHLORINE PESTICIDES Dieldrin was detected in the composite soil sample from locations S9 and SIO at a concentration of 0.110 milligrams per kilogram (mg/kg) and in the surface soil sample collected from location S27 at 0.031 mg/kg; these samples were collected near the woodbarn structure (see Plate 3). The established Environmental Protection Agency's(EPA's)Preliminary Remediation Goal (PRG) for dieldrin for residential sites is 0.03 mg/kg. The soil samples collected from a depth of one foot at locations S9 and S10 did not contain concentrations of organochlorine pesticides above laboratory reporting limits. The concentrations of organochlorine pesticides in the other soil samples collected within and exterior to this structure were very low or below laboratory reporting limits. An elevated concentration of DDT (2.8 mg/kg) was detected in the composite soil sample (locations S13 and S14) collected within the workshop structure (see Plate 4); EPA's PRG for DDT in soil for residential sites is 1.7 mg/kg. The surface soil sample collected between S 13 and S14 (S34) contained a very low concentration of DDT, well below 1.7 mg/kg. The soil samples collected from a depth of one foot at location S13 and S14 did not contain concentrations of organochlorine pesticides above laboratory reporting limits. It is favorable that the concentrations of organochlorine pesticides in the remaining soil samples collected exterior to this structure were also very low or below the laboratory reporting limits. LEAD A few of the surface soil samples collected on the property contained levels of lead considered elevated with respect to expected background (naturally-occurring) concentrations. However, with the exception of sample location S17 (see Plate 5), none of the lead concentrations detected in soils on the property exceeds the established EPA's PRG of 150 mg/kg for lead for residential sites. The one-foot soil sample collected at location S17 contained a very low lead concentration (3.4 mg/kg). The lead concentrations detected in most of the soil samples are very low and are considered to be within the range of naturally occurring lead concentrations in surface soils for the area.