Abstract: Successful permitting will result in efficient pond project planning and execution. Sensible work processes will result in clean edges, increased volume and contented environmental compliance officials.
The permit process will define pond project construction processes. It’s important to include commonsense work procedures into the permit so work will be done in an efficient manner.
Pond projects include the following procedures:
- Silt fence and hay bale installation. Do it exactly by the plan. Don’t argue with anybody about this detail. I’ve seen huge projects delayed by a few misplaced hay bales. Some engineers take it personally when you don’t install silt fence properly. Install the bottom of the silt fence in a few inch slit to permit sediment retention.
- If you will do a wet excavation, or dredging, be sure to accommodate any wildlife issues. This may involve fish relocation.
- Use tight equipment without leaky hydraulics. An oil sheen will quickly stop work.
- Consider using a flexible float system for on-water excavation. These floats, readily available for rental, are metal boxes with latching capability that allow an excavator to sit, dig, and freely move through the work site.
- Plan dewatering pump size and discharge schemes. If the pond will be drained, be sure discharge clean water downstream by using a sedimentation bag or filtration basins. Sedimentation bags built of permeable geofabric fasten to the discharge pipe end. Filtration basins filter water with several rows of haybales.
- Be sure to dig to design grades. Marine engineers have procedures to identify digging depth. They can measure the length of the excavator arm and establish elevations off this mark.
- Pond dredging efficiency includes moisture management. If the excavator loads a bucket of water laden spoils into a truck or trailer you will quickly have an unmanageable mess. A sensible scheme allows for spoil dewatering on a pond bank permits the material to drain before stockpiling. After a few days, transport to final dump location.
- Spending time creating a neat pond bank, or exposed edge, will finish the pond project and allow a smooth pond edge. For safety reasons, be sure to construct a safe slope, not a sharp drop-off into the pond.
- Consider using pond spoils for topsoil. It may be full of organic elements that produce nice loam when mixed with drainage sand.