OP-ED pieces can be much longer, but be sure you have the agreement with the Editorial page editor. Radio advertising is also a great way to build public awareness, local support, and a financial base. This is very important. Hearings are often televised for cable TV, allowing you to reach a very wide audience. Target this group for mail-outs or phone banks.
Companies can target certain groups within the voters list, as well.
Ask for their complete list of services. Contact your state environmental protection agency. They often have a state-wide list of local environmental organizations. If you are interested in a particular environmental organization, you may want to ask for a list of their funding sources. Simply call the publication or news outlet and ask for the environmental reporter.