Rating System

LEED BD+C: New Construction, LEED BD+C: Core and Shell, LEED BD+C: Schools

Rating System Version

v3 - LEED 2009, v2 - Schools 2007, v2 - LEED 2.2

Inquiry

We wish to pursue credit in both SSc5.1 and SSc6.1. We are limiting site disturbance within the prescribed distances listed in credit SSc5.1. The site is suburban, and the stormwater detention/retention facility feeds into an existing seasonal stream. The stream is otherwise outside the boundary of the development footprint. For SSc6.1 the slope of the stream base is relatively steep (approximately 7 percent) and the base is narrow with a steep bank (approximately 2:1) that varies from 6 to 60-feet deep. Consequently, we would like to implement a strategy of placing rock-check dams or log dams to prevent excessive stream channel erosion in addition to limiting the post-development runoff rate and quantity to pre-development values for the 1 and 2-year design storms. There are two questions. 1. Do the stream protection measures fall into the same category as constructed areas with permeable surfaces (like stormwater detention facilities)? If so, we will include those areas (and any necessary construction access) within the Development Footprint. 2. If the stream protection measures are not classified as constructed areas, can permanent stream protection measures be installed outside of the development footprint? The intent will be to place the stream protection measures, and then restore the landscape where site disturbance is required to install the stream protection measures.