You will need to talk Conservation about filing if you are 100 feet within any of the following:
Vernal pool habitat
Filing does not mean your project will be prohibited. It does mean that the Commission would like to review your project for potential impacts to any of the resource areas listed above. If there are potential impacts, mitigation measures will be necessary.
Additionally, if your project is within 200 feet from a river or a perennial stream (a stream that runs year round), than you also need to file. If your project is within a resource area, there is a chance that portions or all of the project could be denied.