The following are tips to keep in mind when working on boats in open maintenance areas. Work should be done over dry land in specially designated areas designed for that purpose. The areas should be clearly marked with signs. Locate maintenance areas as far away from the water as possible. Maintenance areas should be as hard and impermeable as possible so that they can be vacuumed or swept.
Concrete is best as it is easy to clean and resistant to solvents.
The reality is that most marinas have dirt maintenance areas and it is not feasible to have excessive concrete areas. If that can't be employed, require that a tarp be used under the boats - one that can be vacuumed or swept. Avoid hosing down the work area to clean it. Sweep and vacuum and then dispose of the waste appropriately. Take care to ensure that stormwater runoff from the other areas or buildings does not run over the maintenance areas.