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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.
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 2−56
3.Compost filter sock Subsection 206.01.4
b.Check Dams.
1.Baled Hay Ditch and Swale Erosion Checks; Subsection 207.01.1
2.Log and Hay Check Dams; Subsection 207.01.2
3.Sand Bag Erosion Dikes; Subsection 207.01.3
4.Stone Check Dams; Subsection 207.01.4
5.Compost Filter Sock Ditch and Subsection 207.01.5 Swale Erosion Checks
c.Temporary Dewatering Basins.
1.Dewatering Basins; Subsection 208.01.1
2.Filter Fabric Retention Basins; Subsection 208.01.2
d.Storm Drain Protection.
1.Sandbag Gutter Inlet Sediment Barrier; Subsection 209.01.1
2.Silt Fence Catch Basin Inlet Protection; Subsection 209.01.2
3.Baled Hay Catch Basin Inlet Protection; Subsection 209.01.3
e.Stilling Basins. Subsection 210.01
212.01.2 Definitions.
a.Cleaning. Cleaning consists of removing debris and accumulated sediment-laden deposits from the upstream side of perimeter controls, check dams and temporary drainage protection and from the bottom of temporary dewatering basins and stilling basins. All material so- removed shall be legally disposed of.
b.Maintenance. Maintenance consists of the restoration and repair of damage sustained by erosion and pollution controls from “normal” rainfall events (Abnormal weather events are defined in Subsection 212.03.4; Failure of Erosion and Pollution Controls ).
212.02 MATERIALS. Materials required to repair and restore damaged erosion and pollution
controls shall meet the applicable requirements of Subsections 206.02; 207.02; 208.02; 209.02; and 210.02; for Perimeter Erosion Controls, Check Dams, Temporary Dewatering Basins, Storm Drain Protection, and Stilling Basins , respectively, of these Specifications. 2−57
212.03 CONSTRUCTION METHODS. Erosion and pollution controls shall be maintained by the
Contractor to the satisfaction of the Engineer. Erosion and pollution controls must be able to prevent, under normal weather conditions, both the movement of soil materials and the intrusion of sediment-laden discharges into env ironmentally sensitive areas. Construction shall not commence or continue until all specified erosion and pollution controls are in place, properly installed and accepted by the Engineer. Erosion and pollution controls shall be routinely inspected by the Engineer. The Engineer shall immediately notify and direct the Contractor to take corrective action and make all necessary repairs whenever maintenance of the erosion and pollution controls is required. The Contractor shall commence with the requisite cleaning and maintenance measures no later than the next consecutive calendar day after receiving such a directive from the Engineer, and shall aggressively and expeditiously perform such cleaning and maintenance work until the original problem is remedied to the complete satisfaction of the Engineer. In the event of a holiday or weekend storm event, the Contractor must have resources availabl e to restore and, if necessary, to replace any damaged erosion controls.
212.03.1 Threshold for Cleaning Erosion Controls. Erosion and pollution controls will be
cleaned when directed by the Engineer; after a rainstorm; and when sediment deposits reach the heights indicated in the following table:
a.Perimeter Controls Height
1.Baled Hay Erosion Checks ½ Bale Height
2.Silt Fence 6 inches
3.Compost filter sock ½ the compost filter sock height
b.Check Dams
1.Baled Hay Erosion Checks ½ Bale Height
2.Log and Hay Check Dams ½ Bale Height
3.Sand Bag Erosion Dike ½ Dike Height
4.Stone Check Dam ½ Dam Height
5.Compost filter sock ½ the compost filter sock height
c.Temporary Dewatering Basins
1.Dewatering Basins ½ Original Basin Height
2.Filter Fabric Retention Basin ½ Original Basin Height
d.Storm Drain Protection
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 165–167 of 826.