I am trying to document a project under option 2 for this credit for a zero lot line project. Does anyone know what objective data compliance for this option is based on?

Dear all, My project is two underground basement parking floors, that are built on the total land area, while the above-grade floors are built on 30% of the total land area. Should I

Hello I am working on a project in the UK and we are struggling to get the 1 year 24 hours rainfall.

Hi, there has been some previous discussion in this topic, but no definite answer has been given. Example 2 in the ref. guide uses 1" storm, referring to it as 90% of the average rainfall event.

We are having a hard time determining how to calculate the flow quantities for our site when it has been designed so all of the run off is captured and conveyed to on-site retention ponds.

I am in the processing of accessing the feasibility of attaining this credit with a site that is currently 88% impervious and the proposed site is roughly 81% impervious.

Hi everyone, While studying the GBD+C Guide, I noticed that under the Calculations section, says: "various methods and computer-based software programs are available to estimate stormwater runoff r

Hello, We are pursing Option 2 for this project. Our stream channel protection will handle a 10 year storm event. How does the credit handle excessive storms, 50 or 100 year events?

Hi everyone, I got a question about the calculataion of Volume of captured run off; In the formula,(V= P.A.R/12) P value is taken according to the location of project ; humid ,semi arid and arid.w