I've been reading the EB&OM stress test, and felt confused about the "You may get dirty" factor in SSc6.

My site has no stormwater management facilities. It is surrounded by natural vegetation/open space, and parts of the land has hills.

Does installation of mechanical filter media into the storm drain help meet this requirement? (Flogard curb filter inlet)

Does anyone have an accurate way of converting total inches of rainfall to cubic feet as required by the credit?

I am trying to verify that the cisterns on site release stormwater quickly enough to capture 2-year 24-hour design storm events by calculating the minimum drawdown rate.

We plan to use storage tanks for rainwater collection, then re-use the water in our cooling tower and possibly toilets.

OK it seems like, from reading the questions and responses here, that there is absolutely no clear guidance on how to come up with the "rainfall interval event" in order to perform the drawdown cal