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FAQs about WEc3 :

Can I still use Option 1 if I have metered irrigation water use data but it’s only for a couple of months or not the whole irrigation season?

The site already uses reclaimed water for irrigation provided by the water utility or reuses graywater from the building for irrigation. Can the building still qualify for the credit?

To determine the baseline for Option 1, how can we determine what “conventional” practices are?

What if the building has no irrigation systems?

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EBOM-2009 WEc3:Water Efficient Landscaping

Treated water for landscaping

Our project has installed water meters for Irrigation just recently at the start of performance period. The project uses 100% of treated water for Irrigation which is metered. Metered data is available only for 6 months. 1. Should the project comply with the requirement by using option 1? but there is no conventional irrigation system rate available which is required to calculate baseline.or 2. Should the project use option 2 and do manual calculation to prove compliance? but second option is available only for non metered irrigation which is not true in this case. Or 3. Should the project use alternative compliance path?

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Ben Stanley
Senior Sustainability Manager
WSP - Built Ecology
LEEDuser Expert
188 thumbs up

Mon, 04/01/2013 - 18:43

Option 2 with the theoretical calculation can still be used by teams that have an irrigation meter. The only caution is that you can't compare the metered irrigation use to the theoretical baseline calculation. Instead the comparison has to be between the theoretical calculations for both the baseline and installed cases.

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