- 702 - SECTION 822 -- DUST CONTROL
822.01 Description
1.This work consists of the application of water for the alleviation or prevention of dust.
822.02 Material Requirements
1.The water shall be from a potable source or free of contaminants and odors.
822.03 Equipment
1.The distributer equipment shall provide accurate and uniform distribution of water. The control valves shall close fully to prevent leakage.
2.The Engineer may approve alternate water distributing equipment.
822.04 Construction Methods
1.The contractor shall be responsibl e for dust control on the project.
2.Water shall be applied uniformly to prevent concentrated flows and avoid erosion problems.
822.05 Method of Measurement
1.a. Water is measured by the vo lume applied. The volume unit is 1,000 gallons (MGAL) [kiloliter (kL)].
b.Each time a meter is used, the Contractor shall furnish the Engineer with a certified copy of the meter calibration. The meter calibration shall have been performed during the last 12 months.
c.The Engineer shall deduct wate r that is wasted, lost, or applied in excess.
822.06 Basis of Payment
1.P a y I t e m P a y U n i t Water for Dust Control MGAL
2.Water for Dust Control is paid for as an "established" contract unit price item, which is shown in the bid proposal "Schedule of Items". The unit price will be established by the Department.
3.Payment is full compensation for all work described in this Section. - 703 - SECTION 823 -- STABILIZ ED CONSTRUCTION EXIT
823.01 Description
1.This work consists of the cons truction, maintenance and removal of stabilized construction exits to minimize the tracking of sediment onto roadways.
823.02 Material Requirements
1.Rock or broken concrete sha ll have a diameter between 2 inches and 4 inches.
2.Filter fabric shall be a Class II Strength Non-Woven Geotextile from the Department’s Approved Products List unless otherwise specified by the Engineer.
3.Pre-fabricated exits may be approved by the Engineer.
4.Tire Wash Systems may be approved by the Engineer. 823.03 -- Construction Methods
1.Stabilized construction exits sha ll be constructed at the locations shown in the contract or on the tempor ary erosion control plans. Changes in locations must be approved by the Engineer.
2.Runoff from stabilized construction exits shall pass through a sediment control device before discharging from the site.
3.The area of the stabilized cons truction exit shall be excavated a minimum of 3 inches and shall be clear ed of unsuitable material that may tear the filter fabric.
a.The filter fabric shall be placed the full width and length of the stabilized construction exit.
b.Pre-fabricated exits shall be installed according to the manufacturer’s recommendations.
c.Tire Wash Systems shall be installed according to the manufacturer’s recommendations.
4.Place rock or broken concrete over filter fabric to at least 6 inches in depth and leave in a roughened condition to dislodge sediment from tires.
5.Stabilized construction exits shall accommodate the largest construction vehicle in length and width that will exit the site.
6.Stabilized construction exits shall be maintained in a condition which will prevent tracking or the flow of sediment onto roadways or into storm drains. Periodic top dressing with additional stone and/or the reworking of existing stone as co nditions demand may be required. Any sediment tracked from vehicles onto roadways must be removed immediately. The use of water trucks to remove sediment from roadways will not be permitted.
7.The locations of all stabilized construction exits on a site will be documented on the temporar y erosion control plan.
8.Prior to completion of the proj ect, the stabilized construction exit shall be removed and the area shall be restored in accordance with the erosion control plans.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 736–736 of 1,048.