Maryland

Under Maryland law, fly ash, bottom ash, slag, and flue gas emission control waste generated primarily from the combustion of coal or other fuels are not regulated as a hazardous waste. Maryland law authorizes certain beneficial reuses of "pozzolans." Pozzolans are defined as "the finely divided residue which results from the combustion of ground or powdered coal and is released by combustion gases, as defined by the test methods published by the American Society for Testing Materials." Pozzolans may be used 1) for landfill in a manner which complies with sound engineering practices and applicable permit requirements; and 2) as structural building, soil improvement, agriculture soil conditioning, or land reclamation in compliance with all silt control regulations and permit requirements of the Department of the Environment. Dust and erosion minimization is required. If there is a threat to water quality, an NPDES or state permit may be necessary.

Contact Information:
Patsy A. Allen
Maryland Department of the Environment
2500 Broening Highway, Baltimore, MD 21224
Phone:    (401) 631-3000
Fax:        (410) 631-3625
Website: www.mde.state.md.us

Detailed Review of CCB Regulations:
Under Maryland law, fly ash, bottom ash, slag and flue gas emission control waste generated primarily from the combustion of coal or other fuels are not regulated as a hazardous waste.

Maryland law authorizes certain beneficial reuses of "Pozzolans." Pozzolans are defined as "the finely divided residue which results from combustion of ground or powdered coal and is released by combustion gases, as defined by the test methods published by the American Society for Testing Materials." MD. ANN. CODE §15-407 (formerly MD. ANN. CODE §7-464) (ASTM class fly ash). Under Maryland law, Pozzolans may be used as follows:

• For landfill cover in a manner which complies with sound engineering practices and applicable permit requirements; and
• As structural building, soil improvement, agriculture soil conditioning, or land reclamation in compliance with all silt control regulations and permit requirements of the Department of the Environment. Dust and erosion minimization is required.

Note: In locations where there may be a threat to water quality, a NPDES or state permit to protect groundwater may be necessary.

MD. ANN. CODE §15-407 (formerly MD. ANN. CODE §7-464).