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RVC Homes <br /> Project BABX-01-0124 <br /> April 12, 2001 <br /> Page 2 <br /> Prior to the start of our soil borings, a test pit was excavated near the west building line of the house. <br /> The test pit was extended to approximately 15 feet below the surface and indicated that the soft or <br /> unsuitable soils may extend below the 15-foot depth. Also,prior to the start of soil borings,two deep <br /> standard penetration test borings were completed at the adjoining lot at 1074 Wildhurst Trail. These <br /> neighboring borings indicate soft and organic soils extend to depths of 27 to 32 feet below the surface. <br /> A.5. Locations and Elevations <br /> The borings were completed at the approximate locations shown on the attached sketch. These <br /> locations were selected and staked in the field by Braun Intertec. Ground surface elevations at the <br /> borings were measured by Braun Intertec referencing the eastern-most sanitary manhole cover located <br /> just north of the north lot line. <br /> B. Results <br /> B.1. Logs <br /> Log of Boring sheets indicating the depths and identifications of the various soil strata, penetration <br /> resistances, laboratory test data and groundwater observations are attached. The strata changes were <br /> inferred from the changes in the penetration test samples and auger cuttings. The depths shown as <br /> changes between the strata are only approximate. The changes are likely transitions and the depths of <br /> the changes vary between the borings. <br /> Geologic origins presented for each stratum on the Log of Boring sheets are based on the soil types, <br /> blows per foot, and available common knowledge of the depositional history of the site. Because of the <br /> complex glacial and post-glacial depositional environments, geologic origins can be difficult to <br /> ascertain. A detailed investigation of the geologic history of the site was not performed. <br /> B.2. Soils Encountered <br /> Two standard penetration test borings were completed for the proposed house. Boring ST-1. located <br /> near the southwest proposed building area, encountered approximately 12 feet of fill. The fill consisted <br /> of lean clay and lean clay with sand, brown to black, and moist. Penetration resistance (N-values) <br /> ranged from 23 to 9 blows per foot (BPF), indicating the fill is variably compacted. Below the fill, the <br /> boring encountered 7 feet of sandy lean clay and lean clay,judged to be possible fill over slopcwash. <br />