All correspondence must be made through the Vendor Portal. Specifications include, but are not limited to: a. The Successful Bidder(s) shall be required to meet the following minimum requirements: 1) Rock Salt supplied under contract shall conform to the requirement of ASTM D632- 99, Type 1, GRADE 1. i. Moisture content shall not exceed 2.0% by weight for Mined Rock Salt. ii. All sodium chloride must be uniformly treated with either of the following types of anti-caking compounds: Yellow Prussiate of Soda-Sodium Ferro Cyanide or Prussian Blue-Ferric Ferro Cyanide. The anti-caking compound must be introduced uniformly throughout the sodium chloride at such a rate that a minimum of 20-PPM anti-caking compound is present. iii. Any sodium chloride that is not free-flowing and in usable condition upon arrival at its destination will be rejected. 2) Physical Requirements: i. Mined Rock Salt Chemical Composition: Total chloride expressed as NaCL a minimum of 95.0%. ii. Mined Rock Salt Grading: The sodium chloride shall conform to the following particle size distribution specifications as determined by laboratory sieves. • PASSING A ½” SIEVE (12.50MM) 100% • PASSING A 3/8” SIEVE (9.50MM) 95.0% - 100% • PASSING A No. 4 SIEVE (4.75MM) 20.0% - 90.0% • PASSING A NO. 8 SIEVE (2.36MM) 10.0% - 60.0% • PASSING A NO.30 SIEVE (0.60MM) 0.0% -15.0% iii. PERMISSIBLE VARIATION IN THE CASE OF SODIUM CHLORIDE SAMPLES AFTER DELIVERY TO THE AUTHORITY: TOLERANCE FROM THE FOREGOING SPECIFIED VALUE ALLOWED FOR GRADATION NOT TO EXCEED 5.0 PERCENTAGE POINTS ON EACH SIEVE SIZE EXCEPT THE 12.5 MM, (1/2 IN.) AND 9.5 MM (3/8 IN.).
