Specifications include, but are not limited to: The solar salt shall conform to ASTM D632-12, Type I, Grade I with the following supplemental conditions: CHEMICAL COMPOSITION: Sodium chloride solar salt, provided under this contract, shall not be less than 99% sodium chloride. SIZE GRADING: The rock salt, when tested using sieves as described in ASTM-C-136 (*) shall conform to the following requirements for particle size distribution: Sieve Size Percent Passing (**) 1/2" - (12.5 MM) 100 3/8" - (9.5 MM) 95 - 100 No. 4 - (4.75 MM) 20 - 90 No. 8 - (2.36 MM) 10 - 60 No. 30 - (600 Microns) 0 - 15 * - A drying temperature of 110°C ± 5°C should be used. ** - Tolerance of 5 percentage points on the maximum value of the range for each sieve except 1/2" (12.5 mm) and 3/8" (9.5 mm) sizes, on which no tolerance will be allowed MOISTURE CONTENT: Moisture content of the rock salt shall not exceed 1-1/2%* when determined as follows: % Moisture = (W1 - W2) / (W1) X 100 where: W1 = Initial weight of sample W2 = Weight of sample after drying to a constant weight at 110°C ± 5°C. * Procedure shall be in accordance with American Water Works Association B200-88, Section 4.3. A tolerance of 0.5% will be allowed before a non-complying product -moisture - price deduction is assessed RESIDUE: The clay size fraction of the insoluble residue shall not exceed 1 percent of the total salt material. SAMPLING: Sampling shall be done in accordance with current ASTM-D632. The New Jersey Turnpike Authority, or any of its authorized representatives, reserves the right to take samples from the contractor’s stockpile or transfer point.
