Maryland Department of the Environment mentions bicycling in their July newsletter
Air Quality Action in Maryland
... On Air Quality Action Days, MDE recommends we all take steps such as:
* Limit driving. Montgomery and Prince George’s Counties offer free bus service on Ozone Action Days. Commuters can car-pool, walk, or bike to work.
...
<a href="http://www.mde.state.md.us/ResearchCenter/Publications/General/eMDE/vol3no11/airquality_action.asp">http://www.mde.state.md.us/ResearchCenter/Publications/General/eMDE/vol3no11/airquality_action.asp</a>;
Another Route to Work: Bike to Work Day 2009
This May, MDE Secretary Shari T. Wilson and MDE staff participated in a record-setting Bike to Work Day.
...
<a href="http://www.mde.state.md.us/ResearchCenter/Publications/General/eMDE/vol3no11/bike2work.asp">http://www.mde.state.md.us/ResearchCenter/Publications/General/eMDE/vol3no11/bike2work.asp</a>;