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Can the FreeRain System help me with nitrogen reduction requirements?

freerain help nitrogen reduction requirements system
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Can the FreeRain System help me with nitrogen reduction requirements?

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Yes. The FreeRain System itself gets 0% nitrogen removal. The downstream BMP (i.e. sand filter) still controls the overall nitrogen removal rate, but the storage volume of the sand filter can be reduced by the volume provided by the FreeRain System. So you can eliminate some sand filter – equal to the volume of the FreeRain that will be drained in 2-5 days – and the overall nitrogen calculation stays the same. See the “DWQ Technical Guidance” linked herein for more information.

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