When Mike mentioned the fact that oil was being dumped - that is an environmental hazard that is taken very seriously and for which there are severe fines and penalties. Violations are reported to the Department of Health - Hazardous Waste division - 586-4249.
The other avenue that could point him in the right direction is the Department of Land and Natural Resources - Enforcement Hotline - 587-0077.
Pat Rorie has also been hustling to get some action going regarding the slob who's been deposting trash on the aina. Mahalo to Patrick.
Hike safely and cleanly, gang.