SECTION 511—ALLAYING DUST
511.01 Description
This work shall consist of applying either water, calcium chloride, or both on areas designated by the Engineer for the purpose of controlling or allaying the release of nuisance dust from construction oper - ations.
511.02 Materials
Calcium chloride shall conform to Section 239. Water to control dust shall be potable or with the Engineer’ s approval may be from other sources provided it is clear, clean, and free from oil, acid, salt, alkali, organic matter, or other deleterious substances.
511.03 Procedures
The Contractor shall furnish a truck(s) equipped with a water tank having a capacity of at least 1,000 gallons and pumps for furnishing, loading, and applying water to the roadway. Equipment and operators shall be available at all times. The Contractor shall apply calcium chloride at the rate specified on the plans or directed by the Engineer. The Contractor shall plan and prosecute the work so as to expedite completion of the pavement structure or other dust generating activities as soon as is practicable.
511.04 Measurement and Payment
Allaying dust will be measured in hours or tons and will be paid for at the contract unit price per hour based on the time the truck is in actual service on this work or at the contract unit price per ton of calcium chloride actually applied in the work. Loading time for water allowed for payment shall be not more than 30 minutes per 1,000 gallons of water. Truck hours shall be evidenced by daily time reports submitted by the Contractor and approved by the Engineer. The price shall apply to and include furnishing and applying water and calcium chloride. When in-place base material is used as a riding surface to maintain traffic or as a haul route, truck hours or tons of calcium chloride used for allaying dust will be paid for in accordance with the provisions herein.
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