See all forum discussions about NC-2009 SSc6.1
 Subscribe to new posts about NC-2009 SSc6.1 Post a new question aboutNC-2009 SSc6.1
See LEEDuser’s guidance on NC-2009 SSc6.1»
FAQs about SSc6.1 :

What performance threshold do I need to achieve for an Exemplary Performance point?

The calculations for this credit are always a headache! While our projects are usually awarded the credit, the equations in the LEED Reference Guide are helpful mostly for sizing a reservoir or cistern, but don't help you get to the final results. Does US

Why do the requirements focus on 1-year and 2-year, 24-hour storms?

Why include the 1-year storm in the credit requirements? Won't management practices for the 2-year storm be effective?

How can green roofs count as a stormwater control measure?

How can I achieve compliance if my project's stormwater control measures are outside the LEED project boundary?

I have 100-year data—how do I convert to 2-year?

Is it an acceptable strategy to capture the rainwater into tanks and discharge it into the public sewers after the rainstorm reducing the peak discharge?

Are there special considerations for international projects?

View answers »

Forum discussion

NC-2009 SSc6.1:Stormwater Design—Quantity Control

Gravel Roads as BMPs

Hi Everyone, A project I'm working on is factory on a rural setting. All roads and parking lots are gravel. Does this account as pervious paving? I'm certain it should, and it should count towards reducing peak discharge (as opposed to a paved road) and also as a water quality BMP. Am I right? Thanks!

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user Mike Dee
Michael DeVuono
Regional Stormwater Leader
Arcadis North America
LEEDuser Expert
144 thumbs up

Mon, 10/14/2013 - 12:51

In regards to 6.1, you are really only worried about the CN for gravel, which is between 76-91 depending on the underlying soil. The lower CN (as opposed to 98 for impervious) will result in lower discharge rates and volume, this is the fundamental concept behind SWM. A water quality BMP is a feature that treats your surface runoff, a gravel road by itself is not treating anything, especially if it exists in the pre-development. You could do a trench under your parking lot, but without paving above you will have no structural support for vehicles.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.