16-7 for such operations.
Distribute the fertilizer or seed uniformly over the seedbed at the required rates of applications. Cover fertilizer and seed unless otherwise dir ected by the Engineer . If covering is required, provide it to the depth acceptable to the Engineer for the prevention of displacement by wind, rain or surface runoff. Mulch all areas temporarily seeded, in accordance with Section 1615, unless otherwise indicated in the contract or as directed by the Engineer .
Article 1660 — 5 will be applicable to the approval of equipment and the protection of
traffic, structures, guardrails, traffic control devices and other appurtenances.
C.Mowing and Repair of Temporary Seeding Maintain areas where temporary seeding is performed in a satisfactory condition, including mowing at the locations and times as directed by the Engineer . Repair areas of temporary seeding which have been damaged or have failed. Repair includes reshaping or the placing of additional earth material and repeating the seeding process. 1620 -4 MEASUREMENT AND PAYMENT Seed for Temporary Seeding will be measured and p aid in pounds. The weight of seed will be determined by bag count of standard weight bags or by weighing the seed. Fertilizer for Temporary Seeding will be measured and paid in tons. The weight of dry fertilizer will be determined by bag count of standar d weight bags or by weighing the fertilizer in trucks on certified platform scales or other certified weighing devices. Temporary Mulching will be measured and paid in accordance with Article 1615- 4. Mowing will be measured and paid in accordance with Article 1660 -8. Where earthwork and temporary seeding have been adequately constructed, completely drained and properly maintained, and damage occurs due to natural causes, the Contractor will be paid at the contract unit price for the excavated material required for repairs to the damaged earthwork and the contract unit prices for Seed For Temporary Seeding and Fertilizer for Temporary Seeding for correcting the damaged temporary seeding. Repair, at no cost to the Department, any damage to earthw ork or temporary seeding which is due to carelessness or neglect on the part of the Contractor. Payment will be made under: Pay Item Pay Unit Seed For Temporary Seeding Pound Fertilizer For Temporary Seeding Ton 1622 -1 DESCRIPTION Furnish, place, maintain and remove temporary slope drains at the locations shown in the plans and at locations as directed by the Engineer . Work includes , but is not limited to , furnishing all pipe, anchor stakes and compacted earth; installation and removal of the slope drain; constructing the sump, earth shoulder berm and earth berm ditch block; constructing the stone inlet protection; constructing the outlet protection; and dressing, seeding and mulching the disturbed area after the slope drain and berm have been removed. Standard T - sections and elbows at the inlet of the slope drain pipe may be required as directed by the
16-8 Engineer .
The actual conditions during the construction of the project will determine the quantity of temporary slope drains. The quantity of temporary slope drains may be increased, decreased or eliminated entirely at the direction of the Engineer. Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of the work. 1622 -2 MATERIALS Provide temporary slope drains , standard T -sections and elbows with pipe of sufficient size to carry the anticipated volume of water with a minimum diameter of 12 inches . Refer to Division 10. Item Section Corrugated Plastic Pipe and Fittings 1044 -7 Sediment Control Stone, Standard Size No. 5 or 57 1005 Stone for Erosion Control, Class B 1042 1622 -3 CONSTRUCTION METHODS
A.Temporary Slope Drains Install temporary slope drains in accordance with Roadway Standard Drawings during all phases of grading operations and adjust as needed to properly direct water flow. Construct an earth berm at the top of cut and fill sections to direct water flow into temporary slope drains. At locations of single direction water flow, locate tem porary slope drain inlets in a sump along the earth berm. Construct an earth berm ditch block perpendicular to the direction of the water flow on the downstream side of the temporary slope drain. Construct ditch blocks of sufficient height to block the f low of water but at no higher elevation than the earth shoulder berm. Install an elbow at inlet of slope drain pipe as directed by the Engineer . At locations of multi direction flow, install a sump on both sides of the slope drain inlet. Construct inlet protection with sediment control stone and Class B stone in accordance with Roadway Standard Drawings . Install a standard T -section at the slope drain inlet as directed by the Engineer . Join multiple pipe sections using an approved pipe coupling. Anchor slope drains in accordance with the Roadway Standard Drawings . Extend slope drain to bottom of slope and erosion control measures.
B.Outlet Protection at Temporary Slope Drain Protect outlet locations subject to scour by placing Class B stone or a silt detention device. A special stilling basin may also be used as outlet protection in accordance with Section 1639 and as directed by the Engineer . Construct outlet protection devices as shown in the plan s and at other locations as directed by the Engineer . 1622 -4 MEASUREMENT AND PAYMENT Temporary Slope Drains will be measured and paid in linear feet of pipe, including inlets , tees and elbows , measured along the invert of the temporary slope drain, completed and accepted. Sediment Control Stone will be measured and paid in accordance with Article 1610- 4. Stone for Erosion Control, Class ____ will be measured and paid in accordance with
Article 1610 — 4.
Silt Excavation will be measured and paid in accordance with Article 1630- 3.
Source: North Carolina Standard Specifications for Roads and Structures, 2024 Edition. Pages 757–758 of 857.