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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 - Excavation and Fill <br /> i 02302 = 3 <br />