UPDATE; my little gauge read 3 inches exactly.
I can hear the Swasey Parkway Concert, the sound drifts up over the hill. Nice they are getting it in before the deluge.Next Summer you will have a public toilet facility down there, I promise you . I am working on it. I am going to employ composting units, all that “green” buzz will help . I have been given the go ahead from Lara, Jay and Don the Trustees to get all the information , costs, to bring it to the Town. This is needed and it will get done. I may be putting the arm on you for support , votes , and if the Town( fellow citizens) won’t play, money.
More later,
Mike
The Exeter Town Crier 
Great idea. Check out the facilities at Crane’s Beach in Ipswich. Full composting facilities, no odor, very high use.
Salisbury Reservation has them installed as well as the rest area on 95 south over the line. It’s the only way to go. Most people that travel have used them now. There is a bit to work out. Today I will have some drawings and costs from Clivus, based on information I submitted. Clivus is considered the benchmark. If you are “nosing ” around the route 95 rest area does have some odors. This actually is not the composters, it’s the bathroom.Aiming issues? Salisbury is odor free. I have not been to Crane’s in the last few years. Thanks for that Ken.
Mike