16-10 1629 -4 Measurement and Payment
Coir Fiber Mat will be measured and paid for as the actual number of square yards measured along the surface of the ground over which coir fiber mat is installed and accepted. No measurement will be made for anchor items . Payment will be made under: Pay Item Pay Unit Coir Fiber Mat Square Yard CONSTRUCTION AND MAINTENANCE OF SILT DETENTION DEVICES 1630 -1 DESCRIPTION Excavate and satisfactorily dispose of all materials excavated in the construction, cleaning out and maintenance of silt basins, silt ditches , diversions and other silt detention devices. Work includes , but is not limited to , excavation, shaping of the basins or ditches, cleaning out and maintaining the basins or ditches, disposal of all materials and backfilling. 1630 -2 CONSTRUCTION METHODS
A.Genera l Excavate silt basins, silt ditches , diversions or other silt detention devices to the dimensions and at the locations shown in the plan s or as directed by the Engineer for the purpose of siltation control with non- vertical side slopes and not greater tha n 1.5:1 slope . Clean out silt detention devices when sediment volume reaches 50% of the storage volume or as directed by the Engineer , to maintain their effectiveness. Backfill and shape for seeding and mulching silt detention basins and silt ditches bef ore completion of the project unless otherwise directed by the Engineer .
B.Disposal of Materials Use all excavated materials in the construction of roadway embankments except where otherwise directed by the Engineer . Dispose of materials not u sed in the construction of roadway embankments in waste areas in accordance with Section 802.
C.Stockpile Areas Install and maintain erosion control devices sufficient to contain sediment around any erodible material stockpile areas as directed by the Engineer .
D.Access and Haul Roads At the end of each working day, install or re -establish temporary diversions or earth berms across access/haul roads to direct runoff into sediment devices. Silt fence sections that are temporarily removed shall be reinstalled across access/haul roads at the end of each working day. 1630 -3 MEASUREMENT AND PAYMENT Silt Excavation will be measured and paid in cubic yards measured in the or iginal position, of all materials excavated within the limits established by the plans or directed by the Engineer. If in the opinion of the Engineer it is not feasible to measure the excavated material in its original position, the volume will be determined by truck measurement in accordance with
Article 230 — 5, except that no deduction for shrinkage will be made.
Source: North Carolina Standard Specifications for Roads and Structures, 2024 Edition. Pages 760–760 of 857.