Mulching is an essential element in erosion control. It prevents rain droplets from detaching soil particles from exposed areas as well as retains the necessary moisture needed for the germination and growth of seeded areas of a disturbed soil site. Once wet or packed under snow, straw mulch also locks itself into the soil thus stabilizing the surface layer and preventing soil detachment from initiating.
Straw is the most common and most cost effective mulch and is highly recommended for all sites. In areas that have steep grades or are prone to high winds and/or concentrated surface water flows, stapled fiber matting and meshes should be used, as they are less prone to blow or wash away. Wood chips are another cost effective alternative which when used in conjunction with a silt fence can be very effective. Wood chips are often readily available on most construction sites.
Sublots: Mulching the temporary seeding of a sublot shall extend the length of curb at a minimum width of 30-feet from the curb. Mulching shall remain on site from the time the initial clearing is done on the site to the completion of the landscaping by the homeowner. Note: 1 straw bale per 10 feet of curb is the minimum amount of mulching for a single lot to adequately cover the 30-foot wide temporary seeding area. Example: 100′ of lot frontage, a minimum of 10 bales is required.
ODNR Rainwater and Land Development Manual Specifications:
Download a PDF version of this bulletin #08-001B Mulching.