NCG020925_James Cahoon Mine - Cahoon Permanent Seeding_20180220

Permanent Seeding Details - Berm
Practice Standards and Specifications 6.11
James Cahoon Mine
US 64 East, Columbia, NC
Tyrrell County

Definition: Controlling runoff and erosion on disturbed areas by establishing perennial vegetative
cover with seed. Purpose being to reduce erosion and decrease sediment yield from disturbed areas, to
permanently stabilize such areas in a manner that is economical, adapts to site conditions, and allows
selection of the most appropriate plant materials.
Application: Areas to be stabilized with permanent vegetation must be seeded or planted within 15
working days or 90 calendar days after final grade is reached, unless temporary stabilization is applied.
Soil preparation: Complete all final grading of berm and loosen any compacted soils. Apply lime
and fertilizer according to soil test recommendations. Groove or furrow slopes on the contour before
seeding.
Vegetation: For immediate stabilization of disturbed soil, use nurse crop varieties, along with
temporary mulching. Then seed with varieties providing cover for up to 3 years with a maintenance
program, leading toward varieties providing permanent coverage.
Seeding: Evenly apply seed using a cyclone seeder (broadcast), drill, cultipacker seeder, or
hydroseeder. Hand broadcasting is not recommended because of the difficulty in achieving a uniform
distribution. Small grains should be planted no more than 1 inch deep, and grasses and legumes no
more than 1/2 inch.
Mulching: The use of appropriate mulch will help ensure establishment under normal conditions,
and is essential to seeding success under harsh site conditions. If the area being mulched is subject to
concentrated waterflow, as in channels, anchor mulch with netting.
Maintenance: Reseed and mulch areas where seedling emergence is poor, or where erosion occurs, as
soon as possible. Do not mow. Protect from traffic as much as possible

Ken Elliott, consulting
January 18, 2018