02-27-2002 Council Agenda - Laserfiche WebLink

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Page 2 of 3 GEOTECHNICAL EVALUATION OF SOIL CONTIONS 1. Sample soil borings were drilled at the respective lots on May 18, 2001 2. Sample soil boring locations were assigned identification numbers ST -1 & ST -2 (reference last two pages of report "Log of Boring ") 3. Details of ST -1 soil boring (reference "Log of Boring" ST -1) • The location of ST -1 was drilled at a location under the proposed house site. • A layer of Fill soil from surface extending down to a depth of 6 feet. • A layer of Peat {Swamp Deposit} exists at a depth of 6 feet below the surface and extended to a depth of 10 feet. • Lean Clay {Glacial Till} exists from the depth of 10 feet down to 20.5 feet at which point the boring drilling ended. • Ground water stabilized at a depth 15 feet after auger withdrawal. 4. Details of ST -2 soil boring (reference "Log of Boring" ST -2) • The location of ST -2 was drilled at a location east of the proposed house, several feet drop elevation as in reference to ST -1. • A layer of Fill soil from surface extending down to a depth of 6 feet. • A layer of Swamp Deposit {peat} exists at a depth of 6 feet below the surface and extended to a depth of 10 feet. • A layer of loose, water - bearing, poorly graded sand {Alluvium} exists at a depth of 10 feet below the surface and extends to a depth of 18 feet. • Lean Clay {Glacial Till} exists from the depth of 18 feet down to 20.5 feet at which point the boring drilling ended. • Ground water stabilized at a depth 6.5 feet after auger withdrawal. 5. Report "RECOMMENDATIONS" Section D • Remove unstable soils at house location and replace soil as indicated within applicable sections of the Geotechnical Report. • At location ST -1, remove existing Fill and Swamp Deposit to a depth of 10 feet at which depth Lean Clay would be encountered. • At location ST -2, remove existing Fill, Swamp Deposit and unstable Alluvial soils depth of 18 feet at which depth Lean Clay would be encountered.