Specifications include, but are not limited to: a. The compost shall be homogenous material free of soil clods, lumps, roots, and stones. b. The compost shall have a synthetic foreign material (hard plastics, metal, glass, etc.) content less than 1.5% as material retained on a U.S. StdNo.5 (4mm) sieve (TMECC 03.06). c. The compost shall be screened such that a minimum of 90% passes a U.S. Std. ¾” sieve and that no more than 10% passes a U.S. Std. No.10 sieve on a dry weight basis. d. The compost shall have a pH of 7.2 to 8.0. e. The compost shall have a soluble salts content less than 6.0 milliohms (mmoh) per centimeter when determined on a 1:5 compost/water slurry. f. The compost shall have an organic matter content of not less than 35% by weight determined by ASTM D2974-87 Method C on material passing a U.S. Std. ¼” sieve. g. The compost shall have a carbon to nitrogen (C: N) ration less than 36:1. h. The compost shall have a Solvita® Maturity Index between 6 and 7. i. The compost shall have a moisture content of 35% to 65%. j. The compost shall have a dry bulk density of 0.17 to 0.35 grams per cubic centimeter (g/cc).
