Maryland Department of the Environment Baltimore, MD Contact Information Baltimore, MD, Maryland 21230 (410) 537-3314 https://mde.maryland.gov/programs/Lan... Location Get Directions By car By public transit Walking Bicycling Hazardous HHW 1 2 3 4 50.000 Does this listing contain inaccurate information? If so please send us a correction. Your name Your email Subject Please describe what corrections need to be made to the listing.