EXCAVATION Provide all stone gradation designs for review and approval. Furnish and install silt fence for entire project as shown on Civil Engineering Drawings. Sawcut and remove 5’ depressed curb and gutter at existing N. Cedar Road firetruck entrance. Sawcut and remove existing concrete at both N. Cedar Road and Maple Lane firetruck entrances to make room for new building expansion footprint. Remove existing tree and landscaping at Maple Lane firetruck entrance to make room for new building expansion footprint. Remove and relocate existing signage at Maple Lane firetruck entrance. Sawcut and remove existing concrete stoop at east apparatus bay man door. Strip 6” black dirt and vegetation from proposed building pad and haul off site. Strip balance of site and stockpile for respread. Topsoil respread 6” at green areas. Fine grade building pad to 95% compaction and required moisture content. Review As-Built plans for existing building pad grades. Undercut all foundations through the buried topsoil and fill materials to the native clay soils at approximately 5’ to 5’-6” below existing grade. Stone backfill can be used to return the footing area back to design grade. Excavation plan should follow Option 2 in Testing Services Corporation’s soil boring report. Proof roll clay building pad for inspection prior to placing stone. Excavator shall handle all spoils from sewer contractor at roof drains, plumbing contractor, trenches, electrical trenches and light pole bases and haul off-site. Design is based on a minimum 2,000 PSF soil bearing pressure. Review soil boring report by Testing Services Corporation. Furnish only 4” of CA-6 stone base for all site concrete. Stone to be placed by others. Furnish only 4” of CA-6 stone for new curbs. Stone to be placed by others. Furnish and install 6” of CA-6 stone base for under building floor slab. Regrade stone sub base for building slab prior to concrete slab being poured.
