804.1 - Performance Path
The index score for the Performance Path shall be calculated in accordance with Appendix F Water Rating Index (WRI) or equivalent methodology.
804.2 - Water Efficiency Rating Levels
In lieu of threshold levels for Chapter 8 in Table 303, rating levels for Section 804.1 are in accordance with Table 804.2.
804.3 - Water Efficiency NGBS Points Equivalency
The additional points for use with Table 303 from the Chapter 8 Water Efficiency Category are determined in accordance with equation 804.3.
Equation 804.3
NGBS = WRI x (-2.29) + 181.7
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