250-RICR-40-20-2. Agricultural Liming Material Rules and Regulations (version Periodic Refile, 12/31/2001 to 12/31/2001)

AGRICULTURAL LIMING MATERIALS RULES AND REGULATIONS Pursuant to due publication and notice of opportunity for a public hearing, the director has adopted the following regulations. I. The director shall be guided by the American Society for Testing and Materials (ASTM) specification for sieve sizes regarding fineness. II. Minimum calcium carbonate equivalent. Agricultural Liming Materials shall be classified in terms of Calcium carbonate as shown in Table 1. Table 1. Agricultural Liming Materials _____________________________________ Calicum Carbonate Material Equivalent (C.C.E.) _______________________________________ Burnt lime not less than 140 Hydrated lime not less than 110 Limestone not less than 80 Slag not less than 80 Shells not less than 80 _______________________________________ Marl and some byproducts liming materials are used for neutralizing soil acidity, but due to their varying composition, their chemical limits are not included. In some economic circumstances limestone, slag, and shells of less than 80 percent C.C.E. may be used.