We received a heartfelt e-mail regarding the environmental impact of fireworks.  The e-mail is partly reproduced below, with details removed for privacy protection:

Could you encourage persons not to use contaminants including fireworks near and uphill from our XYZ Spring, ABC Stream and a portion of a Creek on our private properties in our wildlife refuge?

Contamination from lead and other substances can also contaminate wildlife and the families that eat game animals locally and in the Americas at large when you think of migratory game birds.