2−54 restore the area in which the basin was located to either its original condition or to the requirements of the Contract. In all cases the stilling basins are to be constructed immediately after the clearing and grubbing operation and before commencement of any excavation and/or embankment. The single exception to this requirement is the construction of a leveling course to create a work platform. Excavation for stilling basins is to take place from the downstream end of the basin and to proceed upstream. Prior to the start of excavation, tem porary baled hay ditch erosion checks and/or hay log check dams are to be constructed immediately beyond the downstream end of the basin. When the basin is complete, the above temporary erosion control measures are to be removed. 210.04 METHOD OF MEASUREMENT. "Stilling Basins for Water Pollution Control" will not be measured by a single unit of measurement usually associated with a specific Proposal item. Rather, each individual item of work required to provide such basins will be measured by their respective units of measurement for the quantity actually provided in accordance with the Plans and/or as directed by the Engineer. 210.05 BASIS OF PAYMENT. "Stilling Basins for Water Pollution Control" will not be paid for as completed facilities. Rather, such basins will be paid for at the contract unit prices listed in the Proposal for those various items of work required to both construct the facility, and in the cases of temporary basins, those items of work necessary to remove the basin and restore the area to its original or proposed condition. 210.05.1 Cleaning and Maintenance. The cleaning and maintenance of Stilling Basins will be paid for under the provisions of SECTION 212; MAINTENANCE AND CLEANING OF EROSION AND POLLUTION CONTROLS.
211.01 DESCRIPTION. This work consists of the provision of stabilized stone pads located at
points of vehicular ingress and egress on construction sites. 211.01.1 Planning Considerations. Public roads adjacent to a c onstruction site shall be clean at the end of each day. This SECTION 211 provides for an area where mud can be removed from the tires of construction vehicles before such vehicles enter a public road. The action of vehicles traveling over a stabilized stone pad will remove mo st of the mud from tires. Construction accesses shall be used in conjunction with the stabilization of construction roads to reduce the amount of mud picked up by construction vehicles. 211.02 MATERIALS. Crushed stone shall conform to the requirements of Subsection M.01.09, Table I, Column II of these Specifications. Filter fabric shall conform to the requirements for same as set forth in Subsection 206.02.2 of these Specifications. 2−55
211.03 CONSTRUCTION METHODS. Stabilized stone pads employed as construction entrances
shall be constructed as indicated on the Plans. 211.03.1 Entrance Dimensions.
a.Thickness. The thickness of the stabilized stone pad shall be a minimum of 5 inches.
b.Width. The width shall not be less than the full width of the respective points of ingress or egress.
c.Length. The length of construction entrances shall be at least 50 feet where the soils are sands or gravels, except where the traveled length is less than 50 feet. Where soils are clays or silts, the length of construction entrances shall be at least 100 feet except where the traveled length is less than 100 feet. 211.03.2 Installation Requirements. The area of the construction entrance shall be cleared of all vegetation, roots, stumps, or other objectionable material. The area shall then be excavated to subgrade and graded. Filter fabric shall be plac ed on the prepared subgrade prior to the placement of the stone pad. The stone shall be placed according to the specified dimensions. 211.04 METHOD OF MEASUREMENT. "Construction Accesses" will be measured by the number of square yards of stabilized stone pads actually installed for this purpose in accordance with the Plans and/or as directed by the Engineer. 211.05 BASIS OF PAYMENT. The accepted quantity of "Construction Accesses" will be paid for at the contract unit price per square yard as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, material and equipment including excavating, filter fabric, stabilized stone pad, and subsequent removal of same, and all incidentals required to finish the work complete and accepted by the Engineer. SECTION 212 MAINTENANCE AND CLEANING OF EROSION AND POLLUTION CONTROLS
212.01 DESCRIPTION. This work consists of the maintenance and cleaning of erosion and
pollution control facilities in accordance with these Specifications and as directed by the Engineer. 212.01.1 Applicable Controls. The specific erosion and pollution control facilities to be cleaned and maintained under this Section consist of the following:
a.Perimeter Controls.
1.Baled Hay Erosion Checks; Subsection 206.01.1
2.Silt Fence; Subsection 206.01.2
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 164–165 of 826.