6-35 SECTIO N 609 – DUST CONTROL 609.0 1 DESCRIPTION . This work shall consist of treating traveled areas to control dust on the project . 609.0 2 MATERIALS . Materials shall meet the requirements of the following subsection s: Water ................................ ................................ ................................ .......................... 745.01 Calcium Chloride ................................ ................................ ................................ .......746.01 609.0 3 DUST CONTRO L WITH WATER . Water shall be applied to traveled areas as the Engineer may designate . The number of applications and the amount of water used shall be based upon field and weather conditions and as ordered in writing by the Engineer. The equipment for water application shall be equipped with an adequate shutoff valve control in the cab and shal l be approved by the Engineer . The equipment shall be available at all times in readiness to perform the work at any time, including Sundays and holiday s, upon written order of the Engineer. 609.0 4 DUST CONTRO L WITH CALCIU M CHLORIDE . Calcium chloride shall be applied in such a manner and by such devices that uniform distribution is obtained over the entire area on which it is ordered by the Engineer. Unless otherwise authorized in writing by the Engineer, calcium chloride shal l be applied at the rate of 1/2 pound per square yard for dust control . When used on granular surfaces on which bituminous material will be applied, the surface shall be reworked by grading or other means to ensure that the surface is sufficiently free of excess calcium chloride as determined by the Engineer. 609.0 5 METHO D OF MEASUREMENT . The quantity of Dust Control with Water to be measured for payment will be the number of thousands of gallons (MGAL) of water actually used in the complete and accepted work . The Contractor shall provide equipment meeting the approval of the Engineer for measuring the quantity of water applied. The quantity of Dust Control with Calcium Chloride to be measured for payment will be the number of tons of calcium chloride actually used in the complete and accepted work . When calcium chlorid e is delivered in bulk, the quantity will be determined from load ticket s. 6-36 609.0 6 BASIS OF PAYMENT . The accepted quantity of Dust Control with Water will be paid for at the Contract unit price per thousand gallons (MGAL) . The accepted quantity of Dust Control with Calcium Chloride will be paid for at the Contract unit price per ton . Payment will be full compensation for furnishing, measuring the load, transporting, handling, and placing the material specified, including any reworking of granular surfaces as specified, and for furnishing all labor, material s, tools, equipment , and incidentals necessary to complete the work . Payment will be made under: Pay Item Pay Unit
609.10 00 Dust Control with Water ................................ ................................ ........... MGAL
609.15 00 Dust Control with Calcium Chloride ................................ ........................ Ton
6-37 SECTION 610 – GNSS CONSTRUCTION EQUIPMENT
610.01 DESCRIPTION . This work shall consist of using grading equipment controlled with a global
navigation satellite system (GNSS) machine control system in the construction of the roadway design and building the required surface models to facilitate GNSS machine control grading. This work shall also consist of furnishing, configuring, installing, maintaining, and removing GNSS units as needed for use by the Engineer and their inspection staff, including building the required surface models and loading them into the Contractor prov ided data collectors, and the training of the Engineer and their representatives on the use of the GNSS units provided.
610.02 EQUIPMENT . The Contractor may use any type of GNSS machine control grading equipment
and systems which will generate end results meeting the Contract requirements. The Contractor shall supply GNSS construction inspection units for use by the Engineer. Each unit shall include all necessary components, communication devices, integrated antennae and receiver and cables, data collecto rs, operating manuals, attachments, and fastening hardware to meet the minimum requirements described below .
a.GNSS units provided for a single Contract shall be the same model and manufacturer and shall include, and be licensed to operate, the same version of GNSS planning software and data collection software to be used by the Engineer for data collection. Units shall be capable of tracking multiple constellations and allow for software updates within two years from the time of delivery. At the time of delivery of the GNSS units, all software provided (including firmware) shall be the most current available from the manufacturer and shall not be more than two years old. The Contractor shall provide a printed copy of the date of software installation for verification.
b.The Contractor shall provide the Engineer with a GNSS rover (with the same capabilities as units used by the Contractor) for use during the duration of the Contract. At the end of the Contract, the GNSS rover unit will be returned to the Contractor .
c.GNSS units shall include both standard USB cable and Bluetooth wireless technology for data transfer between the GNSS units and the data collectors.
d.GNSS units shall be equipped, at a minimum, to receive GPS and GLONASS data.
Source: Vermont Standard Specifications for Construction, 2024 Edition. Pages 809–810 of 1,380.