Congratulations! Being offered and appointment like that is quite an honor.

Speaking from the perspective of the "other side" in this, volunteers are invaluable and worth their weight in gold. Public input on policy matters that affect the public is critical to the success of a project or planning for future infastructure. It is not always easy to find dedicated people who are willing to give their time and people in municipal work are grateful to them for it.

You are to be commended for volunteering!