Specifications include, but are not limited to: CHEMICAL COMPOSITION: The sodium chloride shall conform to a chemical composition of a minimum of 95%. Variations of less than 95% but above 93% will result in acceptance at reduced payment as provided in Section III, Penalties and Price Adjustments. . GRADING: Rock salt 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% - 100% • Passing a No. 4 sieve ( 4.75mm) 20% - 80% • Passing a No 8 sieve ( 2.36mm) 10% - 50% • Passing a No 30 sieve ( 0.60mm) 0% - 10% Because of restrictions used to calibrate salt on Department sanders, the 1/2” gradation requirement is critical. The contractor will be required to re-screen the sodium chloride for continued oversize deliveries. MOISTURE: Salt shall be in a free-flowing condition when received at the delivery location with a moisture content not to exceed 1%. ANTI-CAKING ADDITIVE: Salt shall be loose and free of lumps and shall contain not less than 20ppm of pure anti-caking agent. All bidders are required to identify type of anti-cake additive used in their product. Bidders are required to submit the appropriate Material Safety Data Sheets (MSDS) and Product Information/Data Sheets to the State of Maine at the time of bid response.
