Erosion and Sediment Pollution Control Program Manual.pdf

Structural (Stabilization) Erosion Control Recommendations:
Immediate stabilization is essential on all sites involving earth disturbance and even more critical on
contaminated sites. This can be achieved in several ways:
Mats/blankets/linings/mulching - including compost. Temporary and/or permanent
seeding/vegetation
Isolation and shielding:
• Tarps - particularly effective on small piles of contaminated soils which may need
to sit for a period of time awaiting testing and handling operations. For example,
remediation in the vicinity of an old underground storage tank.
• Temporary daily cover - as used for landfills. This may be useful for larger
stockpiles where tarps are not feasible.
• Impervious Cover - though this could be an effective cap to isolate contaminants,
it will have PCSM implications. Designer should be cautious and understand that
additions to impervious cover and disturbed areas will lead to proportionally
greater amounts of runoff volume that will need to be managed.
Though erosion controls are preferable, sedimentation controls are still an integral part of virtually
every E&S plan. Sedimentation control is typically achieved through settling and filtration.
Besides the various conventional sedimentation BMPs found on construction sites, the following
BMPs have been used successfully on contaminated sites:
– Compost filter berms
– Compost filter socks or weighted
sediment filter tubes
– Flocculants
– Traps and basins with skimmer
devices.
– Isolate, collect and dispose of
hazardous materials/soil utilizing
diversion berms, sumps, etc. This
BMP is more effective in small areas.
363-2134-008 / March 31, 2012 / Page 339