They say that every cloud has a silver lining. The Santa Monica Bay in California has found theirs with the reduction of pollution draining into streams and bays during the drought. Considering runoff is the main source of pollution in the bay the city has implemented solutions like “green streets”, as you’ve seen in previous Torrent blogs, and runoff recycling.
The featured article on Stormwater One details an interview with Neal Shapiro, the city’s Watershed Management Program coordinator, that covers the impact on the city from reducing runoff, how “green streets” make a difference, and new projects on the horizon. Read more here.
“Many alleys are resurfaced so when we do that we are putting in a pervious concrete swell down the center of much of the alley so we can get infiltration there. Every year we do about 10 to 12 alleys.”
Take a look at how it worked in the Avalon Green Alley Project: Stormwater draining from within the project watershed will be collected beneath the permeable paving and in catch basins placed throughout the project limits and routed to a series of flows to drywells, which will pre-treat stormwater and then infiltrate it into the vadose (unsaturated) zone beneath the project.
The city is constantly focused on meeting water quality standards but the harnessed runoff in some cases is also being used to supplement nonpotable water sources. These efforts alone decrease the dependence on imported water to meet its needs. The use of catch basins and MaxWell drywells can increase the city’s efforts to infiltrate as much stormwater as possible in their green alley projects.
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