A. Material Specifications: All Road Salt must conform to ASTM 632-12 (or successor) standards. The Road Salt mixture must be two-thirds ASTM rock and one-third solar. B. Physical Requirements: Road Salt must conform to the following requirements for particle size when tested by laboratory sieve: Sieve Size Weight % Passing 3/4” screen 100% No. 8 screen 25% No. 16 screen 5% a. NOTE: Detailed requirements for laboratory sieves are given in the ASTM 14.02 (or successor). C. All materials offered must meet the latest standards and requirements of the Massachusetts Highway Department for Bulk Road Salt (Sodium Chloride). D. American Society of Testing Materials (ASTM) Specifications - All Rock Salt items must meet all ASTM specifications including sodium content of 95%. The salt must be treated with an anti-caking agent and must be delivered in a free-flowing condition. E. Product Quality - The Municipalities will not purchase or order salt from any stockpile used for the previous season. In addition, no salt will be acceptable that has been previously rejected for use by any State, County, or a Municipality.
