Attachment 19 - Soil Report Danville IL - 7-15-25.pdf

This document is a geotechnical soil exploration report prepared by Midwest Engineering and Testing, Inc. for the Green House Project (Phase II) at the VA Medical Center in Danville, Illinois. The report details subsurface exploration and foundation recommendations based on nine soil borings conducted on November 25, 2011, with depths ranging from 11.5 to 21.5 feet.

Key findings include the site's surficial geology consisting of a thin layer of wind-deposited and water-worked loessial material over glacial drift, with predominantly brown silty clay and clay with sand and small gravel. The report recommends conventional shallow footing foundations using net allowable bearing pressures of 2000 PSF for spread footings and 1800 PSF for continuous wall footings. The soil engineers suggest proper subgrade preparation, compaction, and potential use of engineered fill or replacement of unstable soils. Recommendations also cover site preparation, groundwater control, pond construction, and pavement considerations, with specific guidance on foundation design, concrete slab placement, and construction methods to mitigate potential soil movement and moisture-related issues.