It never stays pristine but the worst of it took decades to accumulate. We found over a dozen tires, a safe, a beer keg, a beaten up rowboat, tons of old clothes piled up at an old campsite and of course the ever present cans and plastic bottles. We also worked on removing invasives. As time went on most of the trash was what got carried by the streams feeding it from drains. There was one time I found a car had been dumped off of the bike path and set on fire.

Thanks for cleaning things up. It is very satisfying if a bit frustrating too. It is one of the few things in life where the result is obvious and clearly positive. I’m always picking trash up on hikes. Maybe the owner of the land would be willing to assist you by providing a place you can deposit the bags of trash and they could truck it out weekly or so. We did something similar with the state (it was public land) and had a storage shed with tools a local business let us use.