780SECTION 606—ROLLED EROSION CONTROL PRODUCTS (RECP)
606.01 Description
This work shall consist of furnishing and placing Rolled Erosion Control Products (RECP) (Standard EC-2 or EC-3 protective coverings) on construction slopes, in drainage channels or concentrated flow areas to facilitate vegetation establishment according to these Specifications and in conformity to the dimensions, lines, and grades shown on the Plans or as established by the Engineer.
606.02 Materials
Materials shall conform to Section 244.02(l). Determination of the type of RECP will be as designated in the Contract and installation shall be at the locations shown on the Plans in accordance with the usage criteria shown in Section 244 and Section 603.
606.03 Procedures
a.Drainage Channel Installation
1.Preparing Areas: Drainage channels shall be shaped in accordance with the cross sections shown on the Plans and then rolled or tamped to compact soil in place before final shaping. During shaping operations, the Contractor shall prepare a seedbed approximately 3/4 inch in depth over the areas to be covered by the RECP . Stones, roots, and other objects that will pre - vent the protective covering from making consistently firm contact with the seedbed shall be removed before covering is installed.
2.Applying Seed: Seed, lime, fertilizer and Hydraulic Erosion Control Product (HECP), type 3 shall be applied at a rate of 1000 pounds per acre (23 pounds per 1000 square feet) in accordance with Section 603 prior to installation of RECP . Seeded areas adjacent to the channel or ditch that are disturbed during installation of covering shall be uniformly reshaped, reseeded, and mulched for seeding at the Contractor’ s expense.
3.Installing RECP: RECP shall be installed in accordance with the Standard Drawings and the manufacturer’ s instructions. A copy of the manufacturer’ s installation instructions shall be furnished to the Engineer prior to the start of installation.
4.Watering: After coverings are installed, seeded areas shall be watered sufficiently to saturate the seedbed. Water shall be applied in a spray, after which no additional watering will be required.
b.Slope Installation RECP on slopes shall be installed at the locations shown on the Plans in accordance with the manufacturer’ s instructions, Standard Drawings, and the Roadside Development Sheets in the Plans and the following:
1.Preparing Areas: Seed bed shall be prepared in accordance with Section 603.606.01 781 2. Applying Seed: Seed, lime, fertilizer and HECP at a rate of 1000 pounds per acre (23 pounds per 1000 square feet) shall be applied in accordance with Section 603 and shall be applied prior to installation of RECP .
3.Installing RECP: RECP shall be installed in accordance with the Standard Drawings and manufacturer’ s instructions.
4.Sediment Retention Roll: Sediment Retention Rolls used as slope interrupters shall be installed in accordance with Section 603.
606.04 Measurement and Payment
Rolled Erosion Control Product (Type) installed in drainage channels will be measured in square yards of area covered, complete-in-place, in accordance with the nominal plan dimensions and will be paid for at the contract unit price per square yard for the type specified. Overlaps, overwidths, and cut slots will not be measured for payment. This price shall include furnishing, installing, smoothing, and shaping ditch channels and waterways; preparing seed beds; and furnishing and applying lime, seed, fertilizer, mulch for seeding, and water. Rolled Erosion Control Product (Type) installed on slopes will be measured in square yards of area covered, complete-in-place, in accordance with the nominal plan dimensions and will be paid for at the contract unit price per square yard for the type specified. Overlaps, overwidths, and cut slots will not be measured for separate payment. This price shall include furnishing, installing, preparing seed beds; and furnishing and applying lime, seed, fertilizer, mulch for seeding and watering. The cost of RECP installed at the Contractor’ s option as a HECP component in accordance with Section
603.03 (f) shall be included in the HECP contract unit price.
Sediment Retention Rolls will be measured and paid for in accordance with Section 603. Payment will be made under: ————————————————————————————— Pay Item Pay Unit————————————————————————————— Rolled Erosion Control Product, EC-2 (Type ) Square yard Rolled Erosion Control Product, EC-3 (Type) Square yard————————————————————————————— SECTION 607—HERBICIDE SPRAYING
607.01 Description
This work shall consist of applying an approved herbicide for the control of weeds in turfed areas as indicated on the Plans or as designated by the Engineer.
607.02 Materials
Herbicide shall conform to Section 244.02.607.02
Source: Virginia Road and Bridge Specifications, 2020 Edition. Pages 808–808 of 1,065.