I give these things a second thought. I can recount my own experience that priced me out of a pond/wetland complex on my land. The plan was to use 100 acres of tilled agricultural ground as watershed (not my fields). NRCS said it would work. My ponds and wetlands would have kept water from these fields from flowing directly into a creek considered impaired by the EPA. In my case, the county surveyor and "studies" he wanted were the impediment. Yup - I have some bias! We all want a clean environment, but IMO, the pendulum has swung too far in one direction. Now it will likely swing too far in the other direction.