EPA link
http://www.epa.gov/osw/conserve/materials/usedoil/regs.htm

State links

MDE
http://www.mde.state.md.us/

Virginia
http://www.deq.virginia.gov/

NJ
http://www.state.nj.us/dep/dshw/

Pennsylvania
http://www.portal.state.pa.us/portal/server.pt/community/waste_oil_program/14096

DC
http://www.dcregs.org/Gateway/ChapterHome.aspx?ChapterID=46868

West Virginia
http://www.blr.com/Environmental/Waste/Used-Oil-Management-in-West-Virginia