Specifications include, but are not limited to: Qualified bidders to produce and deliver magnesium chloride (dust guard) for Blaine County. Approximately 800-1000 tons of material made available for delivery at the below referenced locations upon the request of the Road & Bridge Manager during the 2019 spring season. Vendor shall not impose minimum order requirements. Magnesium Chloride requirments per the BLAINE COUNTY, IDAHO - 2018 ROAD CONSTRUCTION STANDARDS SECTION 27 – UNPAVED ROADS CHEMICAL TREATMENTS are as follows: PART 2.MATERIALS AND EQUIPMENT MAGNESIUM CHLORIDE (MGCL2): 2.2.1. Furnish liquid solutions with the following properties in its undiluted state: 2.2.1.1. Magnesium chloride content: 28-33% (ASTM D4691/D511) 2.2.1.2. Sulfate content (as magnesium sulfate): < 4% (ASTM D4691) 2.2.1.3. Potassium content (as potassium chloride): < 0.5% (ASTM E449) 2.2.1.4. Sodium chloride content: < 1.0% (ASTM E449) 2.2.1.5. pH (5% solution): 7.0-9.0 (ASTM D1293) 2.2.1.6. Specific gravity: 1.31 +/- 0.02 (ASTM D1429) 2.2.1.7. Solution shall be stable, with less than one-percent (<1%) sediment falling out of solution below 0oF.