- 701 - SECTION 821 -- TEMPORARY SLOPE DRAIN
821.01 Description
1.This work consists of constructing slope drains with any type of new or used, rigid or flexible pipe that will adequately carry the water from the top of the slope to the ditch to prevent erosion on the slope.
821.02 Construction Methods
1.Temporary slope drains shall be sized to carry the anticipated volumes of flow. The diameter of the pipe shall be as shown in the contract or as directed by the Engineer.
2.The length of pipe shall be approved by the Engineer. 3. Stormwater shall be channeled into the temporary slope drain inlet. 4. Temporary slope drains shall be placed without bedding requirements.
5.Temporary slope drains shall be securely anchored at the inlet, outlet and along the slope.
6.Velocity dissipation devices s hall be placed at the temporary slope drain outlet to prevent erosion.
7.The Contractor shall maintain the temporary slope drain in good working condition at all times. Good working condition includes anchoring repair, and repositioning of the inlet or outlet at the original installation.
8.Upon completion of the final erosion control measures, the temporary slope drain shall be removed from the project.
821.03 Method of Measurement
1.The temporary slope drain will be measured in linear feet along the longitudinal axis of the pipe.
2.Maintenance and repair of the temporary slope drain will not be measured for payment, but will be considered subsidiary to the item of Temporary Slope Drain.
3.Removal of the temporary slope drain will not be measured for payment, but will be considered subsidiary to the item of Temporary Slope Drain. All material shall remain the pr operty of the Contractor and removed from the site.
4.Velocity dissipation devices will not be measured for payment.
821.04 Basis of Payment
1.P a y I t e m P a y U n i t Temporary Slope Drain Linear Foot (LF)
2.Velocity dissipation devices shall be subsidiary to the temporary slope drain.
3.Payment is full compensation for all work described in this section. - 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.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 735–735 of 1,048.