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FAQs about WEp1 :

The EPA WaterSense methodology and calculator allows only certain types of irrigation to be assigned to certain vegetation types. Why is this and won’t it skew results?

What if we just have a little green area on our rooftop? Is there a minimum amount of landscaped area to earn the prerequisite and credit?

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NC-v4 WEp1:Outdoor water use reduction

No irrigation for pre-req

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Robyn Dowsey
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Eco-Build Strategies LLC
LEEDuser Basic Member
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I have two turf areas that will not be irrigated after establishment My understanding is that for the water sense calculator you must model them with irrigation is they are landscaped Is this true

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Thu, 08/27/2015 - 20:37

Is this the only area on the site that will need irrigation? If so, I would recommend following Option 1 by demonstrating that the landscape does not require permanent irrigation beyond the establishment period. LEED sets the maximum establishment period to be 2 years. If it is not the only landscaped area on site, the answer is yes, this area must be included in the water budget tool. However, the option can be chosen in the tool to note that those particular species need low levels of irrigation. Hope this helps!

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