Is their a park and ride near the bus station?

Yes right at the station

Charge is $4/day at Lebanon stop, none in Hanover. If you are going to Boston I think you can park for free at new London.

Yea there is a parking lot for you to drop off your vehicle for the duration of your trip. And the parking charges are between $3 to $5 per day.

There's a parking lot.

there is inexpensive paid parking.