Develop and implement a plan to limit disturbance and address erosion, sediment, and pollutant control on site during construction.
Sedimentation of receiving waters is highest when erodible materials are exposed, particularly during construction. In addition, materials such as paint, drywall compound, concrete wash, and glues need to be managed to prevent pollution. All proposed activities need an environmental management plan for construction to show how sediment/runoff and pollutants are managed during the construction phase of the project.
This type of plan is often required by local jurisdictions as a “stormwater management plan” (in the US) or an “erosion and sediment control plan” (in Canada). You can use these plans to fulfill this GSH requirement.
How to proceed
The environmental management plan lays out the proposed best management practices (BMPs) to prevent erosion and sedimentation and to prevent, reduce or eliminate water pollution from construction activity. These BMPs include:
- Clear only land necessary to successfully complete the project.
- Minimize areas of vegetation removal and earth movement.
- Conduct construction activities in dry seasons.
- Limit the amount and where heavy machinery is used.
- Know the sources of sediment and pollutants from construction activities and plan for their containment/management in areas where they will have the least impact.
- Develop a strategy for dealing with spills and leaks.
- If access to the shoreline is needed for construction, identify where and how that will occur.
- Look for a conscientious contractor who will economize on the use of construction materials, limit the necessary transport of materials to and from the site, minimize heavy equipment on site, and commit to containing, recycling, reusing, or properly disposing of construction waste.
- Set up waste collection and recycling facilities on site, and maintain them throughout and beyond the construction project as necessary.
- If any neighbors are also planning projects on their property, why not coordinate your environmental management measures? For example, set up a common sediment collector if possible, or share the waste pickup service. It could save both money and resources.
The Checklist for this requirement indicates the items to include in your GSH application to reflect these best management practices.
For more information
BC Ministry of Environment, 2012. Develop with Care: Section Three – Site Development and Management. www.env.gov.bc.ca/wld/documents/bmp/devwithcare/#
Capital Regional District, Victoria, BC. Erosion Prevention & Sediment Control.
Go to www.crd.bc.ca and search for “erosion control”
City of Seattle, Director’s Rule 16-2009 / SPU 2009-004, Vol. II – Construction Stormwater Control Technical Requirements Manual. Go to www.seattle.gov/dpd/default.htm and search for “construction stormwater”.
Washington State. Stormwater Management Manual for Western Washington Volume II-Construction Stormwater Pollution Prevention. www.ecy.wa.gov/programs/wq/stormwater/manual.html
Washington State Dept. of Ecology. Resources and Guidance for the Construction Stormwater General Permit. www.ecy.wa.gov/programs/wq/stormwater/construction/resourcesguidance.html
Environmental Protection Agency. Construction Site Stormwater Runoff Control. http://water.epa.gov/polwaste/npdes/swbmp/Construction-Site-Stormwater-Run-Off-Control.cfm