088307 — Prefabricated Edge Drains

307.01 Description

Construct prefabricated edge drain systems and underdrain pipe outlets.

307.02 Materials

Outlet Pipe Section 905 Select Borrow Section 916 Prefabricated Edge Drain and Fittings Section 922

307.03 Construction

Install prefabricated edge drains according to the manufacturer's recommendations. For drains with support on only one side, place the support side away from the pavement edge. For excavated material, refer to 402.03.01.

307.03.01 Trenches for Prefabricated Edge Drains. Excavate using a trencher. Make the

trenches as narrow as possible, but no more than 10 in. Ensure that the drain is in direct contact with the pavement. Perform the excavation of the trench, placement of the edge drain, and placement of the first lift of backfill in a single continuous operation.

307.03.02 Splices. Make splices prior to placement in the trench; in accordance with the

manufacturer's recommendations and as approved by the Engineer. Solid Central Cores (unconnected two sided flow). Use crossover couplings at all splices and at 200 ft intervals. 307.03.03 Connections to Outlets. Use fittings recommended by the manufacturer. Space outlets at 200 ft intervals and at the lowest elevation on all vertical curves. Construct outlets as specified in 306.03.04.

307.03.04 Backfilling of Trenches. Unless otherwise specified, use approved material generated

from the trenching operation. Use Select Borrow whenever additional backfill material is needed. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS Backfill in two layers, with the first layer being placed simultaneously with the drain, holding the drain flush against the side of the pavement. Use a vibratory shoe compactor.

307.04 Measurement and Payment

The payment will be full compensation for excavation, backfill, compaction, and for all material, labor, equipment, tools, and incidentals necessary to complete the work.

307.04.01 Prefabricated Edge Drains and Outlet Pipe will be measured and paid for at the Contract

unit price per linear foot. 307.04.02 Additional backfill material authorized by the Engineer will be measured and paid for at the Contract unit price per cubic yard for Select Borrow Excavation. 308 — EROSION AND SEDIMENT CONTROL CATEGORY 300 DRAINAGE SECTION 308 — EROSION AND SEDIMENT CONTROL

308.01 Description

Install and maintain erosion and sediment control (ESC) measures and best practices throughout the duration of the Contract as specified in the Contract Documents, regulations, associated regulatory approvals, and associated regulatory permits.

308.01.01 ESC Approved Plans. The portion of the Contract Documents consisting of the ESC

plans bearing the pertinent regulatory approvals from the Administration’s Plan Review Division (PRD), the Anne Arundel Soil Conservation District (AASCD; applies to the Severn River Watershed area only), and inclusive of all approved revisions and modifications thereto.

308.01.02 Training, Certifications, and Accounts. The Erosion and Sediment Control Manager

(ESCM) and the Superintendent shall have valid certification of successful completion of the Maryland Department of the Environment ( MDE) “Responsible Personnel Certification Training for Erosion and Sediment Control” and the Administration’s “Erosion and Sediment Control Certification Training for Contractors and Inspectors.” The ESCM and the Superintendent shall hold valid certifications throughout the duration of the Contract. The ESCM and the Superintendent shall maintain active accounts in the Quality Assurance (QA) Toolkit, as specified in 308.01.06, throughout the duration of the Contract.

308.01.03 Conformance Requirements. In addition to the Contract Documents, conform with

the latest applicable regulations, regulatory approvals, regulatory permits, installation details, and other documents, including but not limited to, the following.

26.17.06 (Water Appropriation or Use).