One of the requirements for the Sustainable Sites Credit: Rainwater Management is that projects

must use Green Infrastructure (GI) and Low Impact Development (LID) techniques within the LEED

project boundary. GI and LID are design approaches that mimic natural hydrologic processes to

manage stormwater runoff at its source. GI and LID techniques include strategies such as rain

gardens, bioswales, permeable pavements, green roofs, rain barrels, cisterns, and vegetated buffers.

The other options are not requirements for the Sustainable Sites Credit: Rainwater Management.

Maximizing open space within the LEED project boundary is a requirement for the Sustainable Sites

Credit: Open Space. Calculating the total rainwater runoff for 75th percentile rainfall events is a

requirement for the Sustainable Sites Credit: Site Assessment. Using a combination of both structural

and non-structural measures to manage a 90th percentile rainfall event is an option for meeting

Option 1 of the Sustainable Sites Credit: Rainwater Management. Reference: LEED Green Associate

Candidate Handbook, page 27; USGBC, [Sustainable Sites], page 4-5.