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Stormwater Management Plan - Rev 1
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Log in to see the plans as drawn PRINCIPLES OF OPERATION
The Filter has been extensively tested in the laboratory. This testing has been carried out using SIL-CO-SIL 106
as a sediment source. SIL-CO-SIL 106 is a silica product containing approximately 90% fine sediments (d50 = 23
microns), and is widely accepted as a sediment source for stormwater simulations by regulatory agencies such as
the Washington State Department of Ecology (TAPE) program, New Jersey Department of Environmental Protection
(TARP), as well as other leading agencies.
The SFC needs only 71cm of depth of water to begin full flow operation. Once the full flow operation has been
achieved, the SFC will operate to a depth of 16cm at which time the siphon will break and the system will backwash.
At this point the only flow is from the drain down cartridge which will drain the vault to a depth below 3cm.
Each SFC has a maximum nominal flow of 2.8LPS. At this flow, each cartridge can treat 68kg of the total
sediment load before maintenance. In addition, through the use of different size flow control orifice(s), the SFC flow
is regulated. As the flow is lowered, the treated sediment load increases. For example, when the flow is lowered to
0.94LPS, the cartridge is able to treat 136kg of the total sediment load before maintenance.
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