Below is a template for a written submission. It's just a suggestion, but may help. For email addresses of recipients, see:
Re: Objection to Great Western Highway western bypass option, which will destroy Centennial Glen
I am writing to you to object to the Great Western Highway Project, in particular with reference to the western bypass, or any option which will destroy or interfere with the Centennial Glen area.
[Include your personal story and connection to the area ]
Centennial Glen is important to me because….
If we lost Centennial Glen it would mean...
Together we can…
In summary, I object to any option for the Great Western Highway project which will negatively impact Centennial Glen.
[your state or location]