Just because the right of way is given to a municipality rather than a private individual does not meant hat you lose your rights as the adjacent landowner.  While it is true that states and municipalities can have rights greater than yours to acquisition and based upon the"public good", it does not mean that their actions can harm the environment etc.  However, you can not just state that the materials will negatively impact the springs.  You will need some proof of it.  And that can be expensive.  It may be in your best interest to get an environmental group involved,  Their resources will be greater than yours.  Good luck to you.