Build your Green Infrastructure Best Management Practices

Green Infrastructure practices must be implemented with care at each stage of the development. If a facility is properly planned and designed but improperly constructed, the facility is unlikely to perform as intended and many benefits of green infrastructure will be lost. The facility may even pollute the stormwater further instead of protect it. Construction considerations for specific green infrastructure practices are presented in the associated individual fact sheets.

Your contractor plays a crucial role in helping your protect water resources during the design phase. Preventing erosion and controlling sediment are some of the most important elements.

Healthy soil (left) has room for air, water, & soil animals that help protect long-term permeability. Compacted soils (right)  generate runoff and reduce plant health that can cause landowners to apply fertilizers & pesticides that pollute downstream waterways. Compost amendment during the construction phase can help restore long-term permeability of soils disturbed during construction.

 

LID Checklist (pdf, xls): The LID Checklist includes over 250 best practices that might be employed during all project phases. A matrix of the practice against a column of different considerations makes it easy to see which practices are applicable with a Y, N, or M (yes, no or maybe, it depends on the implementation).

Tree Protection Publication (pdf): Trees are nature’s best and most cost effective stormwater management approach. This links to the field guide for contractors called “Tree Protection on Construction and Development Sites: A Best Management Practices Guidebook for the Pacific Northwest” and summarizes best practices on how to preserve and protect forest remnant stands and individual trees, change grades around a tree, maintain trees, and plant and establish new trees.

Native Plants/Noxious Weeds: Native plants are essential to healthy watersheds. References have been made available to help you choose the "right plant for the right place" in your stormwater facility or other area to be planted.

Erosion Prevention and Sediment Control Planning and Design Manual:  The purpose of the manual is to provide a comprehensive and detailed approach towards controlling erosion on construction sites. It has been updated to include the latest information regarding materials and installation practices. There are numerous other resources available and readers are encouraged to refer to the reference document listed in Appendix D.