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Learn how to develop effective erosion control plans, investigate problems, assess impact, assign responsibility, and agree on remedies under a cooperative agreement. Discuss management practices, construction project principles, and joint investigations.
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Releases Under the Cooperative Agreement Tom Kobus NE Region Erosion Control and Stormwater Engineer
Goals of Presentation • Develop common understanding • Assist in focusing our efforts • Identify the problem • Learn from our mistakes • Work to improve overall EC effort
Reality for Some Soil Types* • Any runoff from a project can produce a release. • The relationship of soil type, moisture content and runoff volume determine weather you have a release. • 2-year 24 hour is the design standard • 2-year 24 hour rain event is irrelevant once you get to construction *Even without human error
Principles of Erosion ControlPlan Design • Design or select best management practices for the project to: • Avoid or minimize on-site erosion damage in order to avoid or minimize off-site sediment or pollutant accumulation that may result from a discharge. • Protect the perimeter area of the site and the disturbed areas from erosion and pollutant accumulation that may result from off-site runoff.
Principles of Erosion ControlPlan Design • Design or select best management practices for the project to: • Reduce runoff velocities and retain sediments and pollutants on site to the maximum extent practicable
Principles of Erosion ControlConstruction Project Management • Minimize the size of the disturbed area exposed at any one time and the duration of the exposure • Stabilize the disturbed area as soon as practicable.
Cooperative Agreement • 1. Identify and investigate the problem • 2. Assess the extent of adverse impacts • 3. Assess the responsibility of the contractor • 4. Agree on the appropriate remedy • 5. Agree on if enforcement action is applicable
Cooperative Agreement • 1. Identify and investigate the problem • 2. Assess the extent of adverse impacts • 3. Assess the responsibility of the contractor • 4. Agree on the appropriate remedy • 5. Agree on if enforcement action is applicable
Jointly Investigate • Who has time to jointly investigate all releases? • How familiar are you with project and erosion control in the area? • Magnitude? • SWEC Engineer should take lead • If WDNR has interest in enforcement process should be followed to the letter.
How I Investigate • Was the release reported to USACE - WDNR? • Go to locations where water leaves the project. • Has deposition occurred in wetlands or waterways? • Determine if more than deminamus? • Track the sediment to the source? • What erosion took place? • What BMP may reduce or minimize?
Results from my Reviews • What grading practices need to change. • What BMP’s should be added to reduce erosion on site to minimize releases • What BMP’s may need to be added for public perception
Cooperative Agreement • 1. Identify and investigate the problem • 2. Assess the extent of adverse impacts • 3. Assess the responsibility of the contractor • 4. Agree on the appropriate remedy • 5. Agree on if enforcement action is applicable
Collect Facts • Review ECIP and amendments • Review inspections and orders • Look for negligence on part of contractor in the form of written direction or commitments. • Did the contractor violate the terms of the contract.
Cooperative Agreement • 1. Identify and investigate the problem • 2. Assess the extent of adverse impacts • 3. Assess the responsibility of the contractor • 4. Agree on the appropriate remedy • 5. Agree on if enforcement action is applicable
“Agree” • Agree on an appropriate remedy that prescribes the methods and time schedules to mitigate the environmental harm. • WisDOT and WDNR jointly recommend Enforcement action.
