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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 2−58
1.Sandbag Gutter Inlet Sediment B a r r i e r ½ D i k e H e i g h t
2.Silt Fence Catch Basin Inlet Protection 6 inches
3.Baled Hay Catch Basin Inlet Protection ½ Bale Height
e.Stilling Basins ½ D e p t h B e l o w Outlet Elevation
212.03.2 Other Requirements.
a.Perimeter Controls, Check Dams and Storm Drain Protection . The following requirements apply:
1.Damaged controls will be repaired or replaced after each storm events or as directed by the Engineer.
2.Before controls are removed all accumulated sediment on the upstream side shall be removed and legally disposed of.
3.Erosion controls shall not be removed until the adjacent exposed areas are relatively free from future uncontrolled discharges.
4.The Engineer has the authority to verify, enforce, and to specify maintenance activities and to ensure that erosion and pollution controls have been properly maintained.
b.Temporary Dewatering Basins and Stilling Basins . The following requirements apply:
1.The basins will be periodically inspected for signs of erosion around the basin and downslope area.
2.Repairs will be promptly carried out as directed by the Engineer.
3.The Engineer has the authority to verify, enforce, and to specify maintenance activities and to ensure that controls have been properly maintained. 212.03.3 Failure to Maintain Erosion and Pollution Controls. If the Engineer decides on any given day that those erosion and pollution controls specified in the Contract are not in place or have not been adequately maintained as specified in this Section, the daily charge set forth in Special Provision Code 212.1000 will be deducted from monies due the Contractor as a charge for failure to comply with this Specification. Moreover, the stated daily charge will continue each consecutive calendar day thereafter until the deficiencies noted have been corrected to the complete satisfaction of the Engineer. 212.03.4 Failure of Erosion and Pollution Controls. This SECTION 212; MAINTENANCE AND CLEANING OF EROSION AND POLLUTION CONTROLS , is based on the concept that erosion and pollution controls will essentially remain intact under normal rainfall events and that any 2−59damage sustained by said controls under normal rainfall may be repaired under the maintenance provisions set forth herein. However, under abnormal weather events it is possible that erosion and pollution controls may be damaged to the extent that the Engineer may direct that they be replaced in their entirety. Under such abnormal conditions the Contractor will replace the particular facilities, and be compensated for same, under the applicable provisions of SECTIONS 206, 207, 208, 209 and 210; PERIMETER CONTROLS, CHECK DAMS, TEMPORARY DEWATERING BASINS, STORM DRAIN PROTECTION, and STILLING BASINS, respectively, of these Specifications.
a.Abnormal Weather Conditions. For the purposes of this Subsection 212.03.4 , abnormal weather events are defined as follows:
1.For a duration of 1 hour; rainfall equal to or greater than ½-inch.
2.For a duration of 12 hours; rainfall equal to or greater than 2 inches.
3.For a duration of 24 hours; rainfall equal to or greater than 3 inches.
4.Extreme weather conditions such as hurricanes, tornadoes, floods, blizzards, etc. Daily rainfall records may be obtained from the National Weather Service.
212.04 METHOD OF MEASUREMENT. “Maintenance and Cleaning of Erosion and Pollution
Controls” as specified in this Section will not be measured by a single unit of measurement usually associated with a specific Proposal item. Rather, this work will be documented and paid for on a Force Account basis as set forth in Subsection 212.05 .
212.05 BASIS OF PAYMENT. The “Maintenance and Cleaning of Erosion and Pollution Controls”
will be paid for on a Force Account basis as set forth in Subsection 109.04; Differing Site Conditions, Changes, Extra Work and Force Account Work; Para. a (4) of these Specifications. The estimated total amount established by the D epartment and indicated for this item in the Schedule of Prices in the Proposal is the amount from which said Force Account payments will be drawn. SECTION 213 PLACEMENT OF MILLINGS BENEATH GUARDRAIL 213.01 DESCRIPTION . This work consists of the placement of bituminous millings from cold planing operations at all guardrail locations less t han 2 feet from the edge of the existing pavement, or as indicated on the Plans, and/or as directed by the Engineer, all in accordance with these Specifications.
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 167–169 of 826.