720Erosion Control Systems

720.01 DESCRIPTION. Furnish and place erosion control systems in

accordance with plan requirements for use as soil retention blankets on slopes or as flexible channel liners in ditches.

720.02 Materials.

720.02.1 General: Erosion control systems shall comply with

1018.15 The manufacturer’s installation plan and hardware (staples,

stakes, etc.) are considered part of the system and shall be the same as that used during the evaluation for source approval. Use the type of erosion control system shown on the plans. A higher grade system may be substituted for a lower grade system within the same application (slope protection or flexible channel liners), if there is no additional cost to the Department.

720.02.2 Acceptance: Pretested lots of erosion control systems will

be accepted based on a Certificate of Delivery showing DOTD Lot Numbers and laboratory numbers representing the pretested material, including hardware. Sample erosion control systems that are not accompanied by a Certificate of Delivery in accordance with DOTD S613. Sample installation hardware, additives such as tackifiers, and any other component of the system not covered above at the rate of one item per type per size or one quart per manufacturer’s lot in accordance with DOTD S601. Submit all samples to the Materials and Testing Section. Furnish a copy of the approved installation plan with each shipment to the project.

720.02.3 Packaging: Package materials so as to maintain the quality

of the product throughout handling. Identify each package with the manufacturer’s name, product name, manufacturer’s lot number, by the DOTD Lot Number corresponding to that shown on the Certificate of Delivery.

720.03 EQUIPMENT. Furnish and maintain equipment necessary to

satisfactorily perform the work. Equipment for hydraulically applying fiber mulch shall be equipped to eject the thoroughly wet mulch material at a uniform rate equal to the manufacturer’s recommendations or as designated by the plans to provide the mulch coverage specified.

720.04 CONSTRUCTION REQUIREMENTS. Install erosion control

systems in accordance with the approved installation plan, no later than 48 hours after completion of seeding or sodding operations. Install all staples flush to the ground, penetrating all layers of overlapped or adjacent rows.

720.04.1 Slope Protection: Construct slopes to the required grade,

fertilize, and seed prior to application of erosion control systems. At the time of coverage, the area to be covered shall be free of ruts, clods, stones, roots, or other foreign matter that will prevent close contact of the blanket with the soil. Place rolled products or mats with netting only on one side with the netting exposed and the fibers in contact with the soil.

720.04.2 Flexible Channel Liners: Prepare channel slopes in

accordance with 720.04.1. Place flexible channel liners beginning at the downstream end and proceeding in an upstream direction.

720.05 MAINTENANCE. Maintain the areas on which erosion control

systems have been placed until final acceptance of the project. This shall consist of the repair of damage by erosion, wind, fire or other cause. Repair such areas to reestablish the condition that existed prior to placing the erosion control systems at no direct pay. Repair may include fertilizing, seeding, mulching, or sodding as required.

720.06 MEASUREMENT. Erosion control systems, including

hardware, will be measured by the square yard of surface area covered.

720.07 PAYMENT. Payment for erosion control systems will be made at

the contract unit price per square yard and includes all materials, labor, equipment, and other incidentals necessary to complete the work. Required burial of ends and edges, overlaps, and hardware will not be measured for payment. Payment will be made under: Item No. Pay Item Pay Unit 720-01 Erosion Control System Square Yard