I would think that the best course of action is to submit a homeowner's claim for the damage and let the insurance company determine who it will sue for contribution.
If this answer was helpful, please mark it as helpful or as a best answer. This answer is for general education purposes only. It neither creates an attorney-client relationship nor provides legal guidance or advice. The answer is based on the limited information provided and the answer might be different had additional information been provided. You should consult an attorney.
if you have homeowner's insurance that will cover this claim, that is the quickest way to get the damage repaired, Your insurance will then "subrogate" against the town and/or the gas company to get back the monies paid on your claim, as well as your deductible.
Otherwise, please seek an attorney as soon as possible, as there is a 90 day tort claims act notice requirement that applies to the township; if the notice is not filed in time (90 days from the date of the incident), you will lose your rights against the township.
These comments are provided as a public service and are not intended to constitute legal advice. No attorney-client relationship has been created.