The civil engineer on our project made the following comment : "Item 6.2, quality control: all exfiltration trenches accepting rainwater discharge are "dry" and that is considered as pretreatment

I'm working on a major remodel project next to the ocean.

I’m working on a Project in Portugal, which consists in a 13.400m2 site, with 6000m2 rooftop (harvests rain), 2500m2 green roof, 2735m2 of gardens, 306 m2 of planters and 1840m2 of impermeable pave

Am I correct in assuming that even though our total impervious area on the site will increase, we can achieve this credit by implementing treatment strategies that capture 90% of the storm water ru

I would like to know what determines the site boundary for capturing the 90% anual rainfall total. Does the treatment area have to be the entire site boundary?

Hi, Question one. We are in a semi-arid watershed. In the calculations, we count on 0,75 inch rainfall during 24 hours? We are planning to clean the rainwater from the roof.

Our building is connected to a public rainwater channel which is placed out of the LEED boundary, the rainwater channel is connected to the sea.

Our project is harvesting and reusing rainwater for flushing. rainwater that falls on the roof is collected in a 10cubic meter sump.

The Design Team for an urban office bldg. proposes to collect water from roof and terraces as well as mech. condensate for reuse (in irrigation and cooling tower make-up water).

If local requirements are not as stringent as LEED requirements, are we still required to meet LEED requirements beyond local standards?