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The Dunn Foundation in Rhode Island can help you with the resources about how to underground utilities in your community and potential funding scenarios. The number is 401-941-3009. The website is www.dunnfoundation.org.
There are several different federal grants that your community may be eligible for. I'd suggest you going onto the Federal Register page and do a search for grants regarding coastal communities. If you need help, email me separately and I will do what I can!