As concerns grow about restoring Puget Sound to health, stormwater management will become a day-to-day issue for businesses. Native landscaping and reducing impervious surfaces are two approaches to addressing stormwater, which will create spin-off benefits for business as well as ensure the long-term community benefits of a healthy sound, including tourism and outdoor recreation industries.
Native Landscaping
Using drought-resistant native plantings and organic weed control can reduce the cost of landscape maintenance and water usage while eliminating polluted runoff.
If you wish to do your own research, the Washington Native Plant Society WNPS.org and Washington State University Master Gardener program Gardening.WSU.edu are good resources.
Green Roofs
Green roofs (roofs with a growing medium and plants) help reduce water run off, keep buildings cooler in the summer and warmer in the winter and provide habitat.
When designing a green roof for your business, several issues need to be addressed, including type, weight, maintenance, irrigation, plant choices and cost.
One of the major design considerations in a green roof system is its storm water retention capability to help mitigate flooding. To read more see Tips for Selecting the Right Green Roof Design in the August edition of "Environmental Leader".
Pervious Concrete for Parking Lots & Sidewalks
Pervious concrete pavement systems provide a valuable stormwater management tool that creates direct economic benefits, including reduced need for costly engineered treatment systems and recharge of groundwater aquifers that supply fresh water for domestic and industrial use.
According to National Ready Mix Concrete Association:
By capturing the first flush of rainfall and allowing it to percolate into the ground, soil chemistry and biology can then 'treat' the polluted water naturally. Thus, stormwater retention areas may be reduced or eliminated, allowing increased land use. Furthermore, by collecting rainfall and allowing it to infiltrate, groundwater and aquifer recharge is increased, peak water flow through drainage channels is reduced, and flooding is minimized. In fact, the EPA named pervious pavements as a Best Management Practices for stormwater pollution prevention because they allow fluids to percolate into the soil."
Using pervious pavement reduces the need for building retention ponds or increasing costly stormwater treatment capacity.
Concrete pavements have significantly lower life-cycle cost than alternatives such as asphalt. Although the initial cost of pervious installation may be slightly higher, concrete saves money in the long run due to its superior durability and strength. It requires fewer repairs than asphalt, and has a longer overall lifespan.
For more information Go to: PerviousPavement.org