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CITY OF EVERETT SPECIAL PROVISIONS <br /> <br />3rd Ave Water Quality Facility Division 5 – SURFACE TREATMENTS September 12, 2024 <br />AND PAVEMENTS <br />WO No. – UP 3775 SP - 150 <br />5-04.3(3) Equipment <br />5-04.3(3)A Mixing Plant <br />Provide plants used for the preparation of HMA conforming to the following <br />requirements: <br />1. Equipment for Preparation of Asphalt Binder – Equip tanks for the <br />storage of asphalt binder to heat and hold the material at the required <br />temperatures. Accomplish the heating by steam coils, electricity, or other <br />approved means so that no flame is in contact with the storage tank. <br />Provide the circulating system for the asphalt binder designed to ensure <br />proper and continuous circulation during the operating period. Provide a <br />valve for the purpose of sampling the asphalt binder placed in either the <br />storage tank or in the supply line to the mixer. <br />2. Thermometric Equipment – Provide an armored thermometer, capable of <br />detecting temperature ranges expected in the HMA mix, fixed in the <br />asphalt binder feed line at a location near the charging valve at the mixer <br />unit and location convenient and safe for access by Inspectors. Provide <br />plant equipped with an approved dial-scale thermometer, a mercury <br />actuated thermometer, an electric pyrometer, or another approved <br />thermometric instrument placed at the discharge chute of the drier to <br />automatically register or indicate the temperature of the heated <br />aggregates. Provide  device in full view of the plant operator. <br />3. Heating of Asphalt Binder – Provide heating so the temperature of the <br />asphalt binder does not exceed the maximum recommended by the <br />asphalt binder manufacturer nor be below the minimum temperature <br />required to maintain the asphalt binder in a homogeneous state. Provide <br />method to heat the asphalt binder in a manner that will avoid local <br />variations in heating and provide a continuous supply of asphalt binder to <br />the mixer at a uniform average temperature with no individual variations <br />exceeding 25°F. Also, when a WMA additive is included in the asphalt <br />binder, the temperature of the asphalt binder shall not exceed the <br />maximum recommended by the manufacturer of the WMA additive. <br />4. Sampling and Testing of Mineral Materials – Provide HMA plant <br />equipped with a mechanical sampler for the sampling of the mineral <br />materials meeting the requirements of Section 1-05.6 for the crushing and <br />screening operation. Provide for the setup and operation of the field <br />testing facilities of the City as provided for in Section 3-01.2(2). <br />5. Sampling HMA – Provide for sampling HMA by one of the following <br />methods: <br />a. A mechanical sampling device attached to the HMA plant. <br />b. Platforms or devices to enable sampling from the hauling vehicle <br />without entering the hauling vehicle. <br />5-04.3(3)B Hauling Equipment <br />Provide trucks used for hauling HMA having tight, clean, smooth metal beds and a <br />cover of canvas or other suitable material of sufficient size to protect the mixture <br />from adverse weather. Securely attach cover whenever the weather conditions <br />during the work shift include, or are forecast to include, precipitation or an air <br />temperature less than 45°F or when time from loading to unloading exceeds 30 <br />minutes to protect the HMA. <br />Provide an environmentally benign means to prevent the HMA mixture from <br />adhering to the hauling equipment. Drain excess release agent prior to filling