Outdoor Chalk Art
(PDF version of this document)
All storm drains on campus connect directly to local streams
- Draw a map of your event, and make a note of creek and storm drain locations.
- Call UNC’s Environment, Health and Safety Department at 919-962-5507 for a pre-event site visit.
Prevent Chalk from Entering Storm Drains, Creeks or Protected Areas
- Use of more than 3 (three) pounds of chalk at a single event requires the development of a cleanup plan. This will cost $$$. Contact the Student Union or EHS for sidewalk cleanup requirements.
- If the event will be held on a small, contained area, cordon off the area to prevent artists from using chalk outside of designated area.
- Protect storm drains by covering the drains with tarps.
- Keep chalk art at least 50 feet from any stream or storm drain.
- Request a copy of the chalk product’s SDS (Safety Data Sheet) from the manufacturer or supplier.
- Review SDS for potential safety and environmental hazards, and e-mail a copy to EHS at email@example.com.
- Biodegradable or “environmentally friendly” does NOT mean that the substance can go into the local streams. The material can harm aquatic organisms by altering water quality and chemistry.
- Several weeks before the event, develop a plan for chalk cleanup.
- Do NOT use hoses or pressure washers to clean chalk off of sidewalks or paved areas!
- If more than 3 (three) pounds of chalk will be used, the most effective cleaning method will be to rent an indoor floor buffer. Dispose of wastewater in housekeeping sinks (inside).
- For smaller areas, use brooms or street sweepers to cleaned paved areas. Bag chalk dust and dispose into regular trash container.
- Call EHS at 919-962-5507 if you need clarification on allowable cleanup methods.
- If any chalk causes discoloration in a stream, call EHS at 919-962-5507 immediately during regular working hours or call UNC Police at 911 after hours.