Crack Sealing - Black Canyon of the Gunnison National Park, and Curecanti National Recreation Area

Magnitude: Between $25,000 and $100,000Contract will consist of reducing and sealing cracks on Visitor Used Paved Roads and Parking areas at Black Canyon of the Gunnison National Park, and Curecanti National Recreation Area as described in Scope of Work and mapped area. Period of Performance: 09/01/2022 to 09/30/2022 SOW for crack sealing at Black Canyon of the Gunnison National Park, all paved roads, excluding the East Portal Road section, Curecanti, Lake Fork and Cimarron Area's Crack Sealing Project High-pressure guidelines: 1. High-pressure air blasting equipment must be able to provide a continuous, high-volume, high-pressure airstream using clean, dry air. 2. Recommended operational criteria are 90 lb/in (620 kPa) pressure and 150 ft3/min (4.3 m3/min) flow. Hot-pour application should commence once the material has reached the recommended application temperature and the first few cracks have been prepared. From this point, the focus is on three items: 1. Consistently maintaining the material at or near the recommended application temperature without overheating. 2. Maintaining a sufficient supply of heated material in the kettle. 3. Properly dispensing the right amount of material into the crack channels. The kettle operator must be fully aware of the recommended application temperature and the safe heating temperature of the material being installed. These temperatures are generally marked on the material containers for quick and easy reference. Material Application Recommendations: 1. Apply the material with the nozzle in the crack channel, so that the channel is filled from the bottom up and air is not trapped beneath the material. 2. Apply the material in a continuous motion, making sure to fill the channel to the proper level for recessed configurations or provide a sufficient amount of material for flush configuration. 3. Reapply material to crack segments where material has sunk into the crack or an insufficient amount was furnished in the previous pass. 4. Recirculate material through the wand into the melting vat during idle periods.

Division 01 -	General Requirements, Vehicular Access and Parking, Traffic Control, Temporary Barriers and Enclosures.
Division 32 -	Exterior Improvements, Flexible Paving, Asphalt Paving, Rigid Paving, Concrete Paving, Paving Specialties, Pavement Markings.
Division 33 -	Utilities, Storm Drainage Utilities, Storm Drainage Structures.