For potentially hazardous materials (pesticides, paint possibly the asbestos), are there city services where such materials can be taken for disposal? Example of what we have here
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjXqO-EhqD-AhWvJUQIHT_qDhkQFnoECBQQAQ&url=https%3A%2F%2Fwww.accgov.com%2F5894%2FHard-to-Recycle-Materials-CHaRM&usg=AOvVaw2a98npe5TJ6m46QWhkLbjQ, do you have anything like that?
Sorry if this next bit seems irrelevant at first. Our neighborhood has a swimming pool. At one time, it was run by some well-meaning people (The Board), but unfortunately, people kept taking advantage of their good nature. The board nearly went bankrupt because people would not pay their membership fees, there was no gate to control people with no membership from using the pool, and people with memberships kept letting everyone they knew into the pool. Picture a neighborhood with 800 households, better than half using the pool, but only 50 households paying their way! The unrestricted parking lot was used as a dumping ground for old furniture and so forth (hauled off at pool board expense). The book keeper was also stealing pool funds and not paying the bills for water, electricity, etc.). It was a free-for-all, and people hated it. A new group of people started running The Board, with secure access to members with keys only, strict sign-in policies, security, including security cameras. Although people resented the reduced freedom initially, they later appreciated the better operation of the pool and the balance sheet that was always "in the black" for planned necessary maintenance and other expenses! Membership is now at capacity, with a waiting list to join each summer.
The point is, folks at your allotment that have a head for planning and the willingness to pitch in can "vote-in" improvements. Limit the amount of trash build up allowed on individual plots. Absolutely NO waste of any kind allowed from neighbors that are not plot holders. Have scheduled clean-up days for plot holders to tidy up and remove materials (maybe at the start, middle, and end of growing season), maybe a slight reduction in fee for those that participate in cleanups? Plot holders can decide (together) what is acceptable to keep on site, what is not, and keep out items that don't belong (e.g., old carpets and office chairs) and limit others (e.g., no more than 4 liters of equipment fuel per plot). Everything stored as neatly as possible. No common spaces where people can start a "tip" forming! A rule that if you pack something in, you must be capable of packing it back out. Possibly waste management deposits, refundable at the end of your lease, if you the plot holder keeps their plot clean, no trash build-up.
Just some suggestions.
