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B. Select Material <br />Select Fill shall consist of uniform, clean, free draining sand or sand and shell containing <br />less than 5% fines passing a No. 200 sieve. Laboratory test results of this fill shall be <br />submitted to the Engineer for his approval. <br />C. Topsoil <br />Natural, friable soil representative of productive, well -drained soils in the area, free of. <br />subsoil; stumps; rocks larger than 1 inch diameter; brush; weeds; toxic substances; and other <br />material detrimental to plant growth. Amend topsoil pH range to obtain a pH of 5.5 to 7. <br />PART 3 - EXECUTION OF WORK <br />3.01 SURFACE PREPARATION <br />A. Clearing and Grubbing <br />Unless indicated otherwise, remove trees, stumps, logs, shrubs, and brush within the clearing <br />limits. Remove stumps entirely. Grub out matted roots and roots over 3 inches in diameter to at <br />least 24 inches below existing surface. <br />B. Stripping <br />Strip existing topsoil to a minimum depth of 6 inches without contamination by subsoil material. <br />Remove all existing topsoil with organic roots and materials. Stockpile topsoil separately from <br />other excavated material and locate convenient to areas for soils exchange. <br />C. Unsuitable Material <br />All cleared, grubbed and demolished material deemed unsuitable shall be stockpiled on-site by <br />the Contractor for disposal by soils exchange with material over excavated from the proposed <br />stormwater management tract(s). <br />D. Disposal <br />In all areas where excavation is to be done, all earth, rock, muck and other materials shall <br />be removed and separated as to suitable and unsuitable material for backfill as defined <br />herein. <br />The Contractor shall temporarily stockpile all unsuitable fill and backfill material for later <br />disposal by soils exchange from suitable material to be over excavated from the on-site <br />stormwater management lakes. The stockpiled material shall be piled in an orderly manner <br />so as not to endanger the work or obstruct roadways or drainage within the designated job <br />site location. All unsuitable material shall be disposed of by over excavating an equal <br />volume of suitable material from the stormwater management lakes and subsequently <br />filling the over excavated volume with the unsuitable material. All over excavated material <br />shall be utilized and spread on the project site. Hazardous or waste materials shall not be <br />used in the unsuitable material to be exchanged. Waste, brush, refuse, stumps, roots, <br />timber, etc. shall be removed from the site and disposed of in an approved manner. <br />02302 - 3 <br />02302 — Excavation and Fill <br />