Dear all,

Our project design stormwater combine 2 options:
1. For stormwater runoff at the ground surface, we can decrease 25% by installing pervious pavement (like hole brick...)
2. For stormwater from the top roof, we will collect by a piping system, and connect this piping to public drainage system, don't let this source to runoff above ground surface.

So, if we design like that, can we achieve this credit requirements, under CASE 2?

Thanks so much for your helping.