Specifications include, but are not limited to: Watauga County Building Maintenance Department is seeking bids from persons or firms interested in submitting bids for sealing and marking parking lots at the following Watauga County properties: Administration Building, Community Recreation Center, Courthouse Complex, Rocky Knob Park, Watauga Gorge Park, Western Watauga Community Center and Watauga Humane Society. The scope of this work includes the seal coating of approximately 26,152 SY of asphalt surface and restriping of 480 parking spaces, 4 crosswalks and 1 Do Not Park zone. 2.1 Preparation. Paved surfaces on which the emulsified asphalt sealcoat is to be placed shall be swept and/or blown clean and dry, and be free of loose foreign materials before placing the seal coat. Grease, oil and gas spots and stains shall be pre-treated. 2.2. Emulsified Asphalt Sealcoat. The sealcoat shall consist of a mixture of emulsified asphalt, mineral aggregate, additives and water properly proportioned, mixed and uniformly spread over the surfaces areas to be treated. The mixture shall contain no asbestos. The cured sealcoat shall have a homogeneous appearance, adhere firmly to the surface and provide a skid-resistant texture. The sealcoat product shall meet ASTM D-2939 standards or equivalent. Sealcoat product shall be approved by the Town of Boone. 2.3. Placing the sealcoat. Mixing and spreading equipment shall conform to manufacturer’s requirements. Mixes are generally in the range of 100 gallons of emulsified asphalt sealer, 20 gallons of water, 2 gallons of additive and 300-500 pounds of sand (Portland cement or fly ash may be substituted depending on manufacturer’s requirements). When properly mixed with water, additive and aggregate, and applied, one gallon of emulsified asphalt sealant will cover 11-13 square yards in one coat of application. All work shall be performed only when the surface and ambient air temperatures are at least 50 degrees F and rising and no rain is anticipated. Ideally, the surface temperature should not drop below 50 degrees in a 24-hour period following application. The mix shall be spread in a manner to fill cracks and achieve a uniform skid-resistant surface. Sealcoat shall be applied in two coats.
