Specifications include, but are not limited to: a) Surface Preparation: Prior to application of chlorides, the roadway shall be prepared by surface blading, and watering as necessary to achieve adequate penetration of the chlorides without runoff. If flakes are used, water will be added after placing the flakes to facilitate penetration of the chlorides into the roadway. b) Application: The Distribution Equipment shall be so designed, equipped, maintained, and operated such that the dust abatement material may be applied uniformly on variable widths of surface. c) For liquid products the following requirements shall apply: The spray pattern from each nozzle on the spray bar shall be uniform across the spray bar: Distribution equipment shall include accurate volume measuring devices or a calibration tank, a thermometer for measuring temperatures of tank contents, and a hose and nozzle attachment for applying material to areas inaccessible to the spray bar. d) Calcium Chloride Flake shall be spread with equipment that evenly distributes the material across the required road width. The relative weight of the material placed shall be easily determined during application. e) Application Rates will be as follows: MgCl Brine - 0.50 gallons/square yard – 31% Concentration. The State COR may field test Chloride brines prior to application to make sure that the products meet the minimum concentrations specified. Acceptance of the material will be based on the concentration shown on the manufacturer’s certificate, or on the results of laboratory quality assurance tests done by the State on samples taken from distribution or hauling vehicles. f) Uniform distribution shall be obtained at all points. For liquid products the spray pattern from each nozzle on the spray bar. For flake products, the coverage will be uniform on the road surface. Overlapping or skipping between spread sections shall be corrected. Accidental spillage and areas with excess dust palliative that are hazardous to traffic shall be covered with additional road surfacing material. The surface of adjacent structures and trees shall be protected from spattering or marring. Dust palliative material shall be discharged only in approved areas, and shall not be allowed to flow into ditches or stream courses. All products may be placed in one application...
