Glad to hear it was a great day at the springs. We had our DCV meeting on Saturday, and did some cleanup, but I think you should thank all the wonderful visitors who have been helping our efforts by packing out all of their trash plus just a little bit more.
Sorry to hear about the glass and the bikers. When I see people with glass and they don't seem responsive, I try to get them to put the glass bottle into a sock, so that it will make clean-up easy in case it breaks. Usually that is successful, although my hope is always that they will stop bringing glass to the springs.
The springs were indeed wonderful this weekend!