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7851.4.001.01 Bright Development July 20, 2007 APN 240-040-02, 24832 South Lammers Road Page 5 SOIL SUITABILITY STUDY minimize potential volatilization of DBCP, if present in the groundwater. The bottles were then ` placed in a chilled ice chest and transported to the laboratory on the same day collected under chain-of-custody documentation. The DBCP sample vials contained hydrochloric acid as a preservative. 4.6 Analytical Reporting Completed chain-of-custody forms and the analytical reports from the laboratory are attached. 5.0 SOIL PROFILE INFORMATION 5.1 Site Map Soil profile information was obtained at each of the percolation test locations shown on the attached Site Ma Figure 5.2 Description.o oll Profile Excavation Observation of the soil profile was obtained from the cuttings of the drilled percolation test holes./ The test holes had a 4'/2-inch-diameter and were 42;inches deep. 5.3 Soil Lithology Soil lithology consisted of ark gray--brown, mohst to wet silty clay CH) from the ground surface e th o etween 3:and ' feet below the roundsurface b s . This initiato an approximate d p f1g ( g )er had a medium stiff�e—stiff- onsistenc . Below the initial soil layer, a moist, light soil lay Y g yellow-brown clayey silt (ML) with some very fine sand was encountered at test holes 131, C 1 and C2. At location Al, a moist, light orange-brown, very fine-grained silty sand (SM) was encountered below the silty clay. Based on geotechnical explorations we have conducted in the general area of the Property, the soil conditions at the Property are typical of the general area and we anticipate that the soil will become progressively sandier with depth in the upper 10 feet bgs. 5.4 Soil Lithology With Respect to Septic Uses Our observation of the soil profile suggests that the site soils are suitable for septic waste disposal, albeit shallow soils appear to have slow percolation rates such that seepage p' s may be more appropriate than leach lines from a disposal area size and constructioneconomic perspective.