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<br />High Rock Road Waste and Recycling Center Improvements 31 20 00 - 3 <br />Orange County, North Carolina JULY 2021 <br />DAA PN: R00592-213N <br /> <br />dimension, except in the uppermost lift of fill, where the m aximum particle size <br />should be two inches largest dimension. Maximum sized particles should not <br />be in excess of 20 per cent of the volume of the fill materials, and such particles <br />shall be well distributed throughout the mass. Fill material shall not con tain, <br />waste, frozen materials, vegetation, and other deleterious matter and shall not <br />be placed on over-saturated, frozen, or frost covered subgrade. <br />C. Unsatisfactory Soils: Soil Classification Groups OL, CH, MH, OH, and PT <br />according to ASTM D 2487, or a combination of these groups. <br />1. Unsatisfactory soils also include satisfactory soils not maintained within 2 <br />percent of optimum moisture content at time of compaction. <br />D. Subbase Material: Naturally or artificially graded mixture of natural or crushed <br />gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least <br />90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a <br />No. 200 sieve. <br />E. Base Course: Naturally or artificially graded mixture of natural or crushed <br />gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least <br />95 percent passing a 1-1/2-inch sieve and not more than 8 percent passing a <br />No. 200 sieve. <br />F. Engineered Fill: Naturally or artificially graded mixture of natural or crushed <br />gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least <br />90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a <br />No. 200 sieve. <br />G. Bedding Course: Naturally or artificially graded mixture of natural or crushed <br />gravel, crushed stone, and natural or crushed sand; ASTM D 2940; except with <br />100 percent passing a 1-inch sieve and not more than 8 percent passing a <br />No. 200 sieve. <br />H. Drainage Course: Narrowly graded mixture of washed crushed stone, or <br />crushed or uncrushed gravel; ASTM D 448; coarse-aggregate grading Size 57; <br />with 100 percent passing a 1-1/2-inch sieve and 0 to 5 percent passing a No. 8 <br />sieve. <br />2.2 ACCESSORIES <br />A. Warning Tape: Acid- and alkali-resistant polyethylene film warning tape <br />manufactured for marking and identifying underground utilities, 6 inches wide <br />and 4 mils thick, continuously inscribed with a description of the utility. <br />DocuSign Envelope ID: BBF56E0A-3618-497E-AA70-92F097E8F598