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Emergency/Disaster Site - Land Application of Wood Ash Guidance
1. Whenever possible, soil test data and waste analysis of the ash should be available to determine appropriate application rate.
2. In the absence of test data to indicate agronomic rates, application should be limited to 2 to 4 tons per acre/one time event. If additional applications are necessary, due to the volume of ash generated and time frame in which the ash is generated, then an ash management plan will be needed.
3. Ash should be land applied in a similar manner as agricultural limestone.
4. Ash should not be land applied during periods of high wind to avoid the ash blowing off the application sites.
5. Ash should not be land applied within 25 feet of surface waters or within 5 feet of drainage ways or ditches on sites that are stabilized with vegetation. These distances should be doubled on sites that are not vegetated and the ash should be promptly incorporated into the soil.
6. Records should be maintained to indicate where ash is applied and the approximate quantities of ash applied.
7. As an option to land application, ash may be managed at a permitted municipal solid waste landfill after cooled to prevent possible fire.
8. Assistance in obtaining soil test data and waste analysis of ash should be available through county offices of the N.C. Cooperative Extension Service.