dredge spoils these days are tough to deal with,just to warn you.Although my experience is with salt water dredging I would imagine you may find the same red tape.
There is a large lake near me that a friend lives by, along with alot of others in an association. They trim the weeds every year and do the usual maintainance. They wanted to dredge their back canals and other areas to prevent further decline of the quality. They don't have any place to put all the dirt/muck, so I offered to my friend that they could haul it to my place. They did more research and found out that the material would be considerd hazardous and had to be dealt with properly. If they loaded the wet stuff into a truck and one drop would fall out of it onto the roadway, the whole operaton would be shut down and fined big time. The only way they could do it was to keep the material onsite.
