Biochar and Stormwater Runoff #stormwater
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Thanks for the overview. Here is a link Pacific Northwest Biochar Atlas that I believe you were involved in getting started. I am not sure how up to date it is, but there is a list of biochar suppliers under the Find Biochar tab located in the pacific NW.
From firsthand experience, several ports on the North Olympic Peninsula and San Juan Islands have done in-house designs and construction of various biochar-based filtration systems. Ports in particular have benchmarks they must meet for discharge into the bay of both zinc and copper. One of the projects was done in collaboration with Biological Carbon LLC whose downspout filter designs were used. Olympic Biochar furnished the biochar and constructed the downspout filters that were installed by the port. All filters met the discharge requirements for several years.
Another port has designed and installed in-ground systems using Olympic Biochar at a fraction of the cost of traditionally engineered systems. They feel when the biochar has reached its capacity, it has the benefit of not “dumping” what has been captured due to PH and biological changes in the filters; it can easily and affordably be replaced when necessary.
It has been my experience that whether biochar is incorporated into gardens, farms or used in stormwater filtration, it is the citizen scientists that are leading the way.
You mentioned biochar being included in a state stormwater manual. Do you have a link to that manual?
We know more about the stars overhead than the soil underfoot.
Leonardo Da Vinci
On Sun, Dec 29, 2019 at 9:47 AM Tom Miles <tmiles@...> wrote: