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DocuSign Envelope ID:81 E05E8E-EED7-43D3-8B8A-0811 OE72140A <br /> SECTION 31 00 00 - CLEARING, GRADING AND EXCAVATION <br /> greater. The source of borrow materials shall be approved by the Engineer. The <br /> Contractor shall submit Proctor density curves for each source of borrow material <br /> for approval. <br /> 2.2 CRUSHED STONE <br /> Crushed stone for foundation preparation or for use as backfill in event of over <br /> excavation, shall be uniform, clean and shall conform to ASTM C-33, size no. 57, <br /> or size no. 67 as directed by the Engineer. <br /> 2.3 CONCRETE <br /> Concrete for use as backfill in event of over excavation, as directed by the <br /> Engineer, shall have a compressive strength of 2,000 psi or greater. <br /> 2.4 TOPSOIL <br /> Topsoil shall consist of natural loamy soil suitable as surfacing for lawns or <br /> roads, occurring usually in a surface layer of 6" to 18" thick. Topsoil shall be <br /> removed from the work sites and shall be stockpiled for subsequent use. <br /> PART 3 - EXECUTION <br /> 3.1 PRELIMINARY WORK <br /> Key sedimentation and soil erosion control measures shall be installed prior to <br /> beginning significant clearing operations. <br /> 3.2 CLEARING, GRUBBING, AND STRIPPING <br /> A. Where trees or brush exist at the site of the work, the construction areas <br /> shall be cleared and trees, stumps, and roots grubbed. All areas shall be <br /> stripped to such depth as to remove turf, roots, organic matter, and other <br /> objectionable materials. Only those trees that seriously interfere with <br /> construction shall be cut and care shall be exercised to protect remaining <br /> trees and adjacent property. All brush, stumps, laps, roots, and logs shall <br /> be removed from the entire construction area and disposed of offsite to <br /> the Engineer's satisfaction. Marketable wood mass shall be harvested <br /> and sold with revenue belonging to the Contractor. No open burning shall <br /> be allowed. Minor debris, pipes, and debris that may be on the site shall <br /> be removed and disposed of to the satisfaction of the Engineer. <br /> B. The operations of the Contractor shall be conducted with full consideration <br /> of all the proper and legal rights of the Owner, and of adjacent property <br /> owners and the public, and with the least possible amount of <br /> inconvenience to them. <br /> Orange County DAA PN R00592-225N2 <br /> Walnut Grove Wastewater System January, 2021 <br /> 31 00 00-4 <br />