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Hidden Canyon Residences and Preserve Custom Report, 3/6/2025 <br />8 / 45 <br />2.1. Construction Emissions Compared Against Thresholds <br />Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) <br />Un/Mit.TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e <br />Daily, <br />Summer <br />(Max) <br />— — — — — — — — — — — — — — — — — — <br />Unmit. 27.1 26.8 78.9 58.5 0.32 2.17 13.4 15.5 1.83 4.08 5.91 — 44,242 44,242 2.25 5.60 76.0 46,042 <br />Daily, <br />Winter <br />(Max) <br />— — — — — — — — — — — — — — — — — — <br />Unmit. 6.35 3.86 71.3 45.2 0.30 1.79 13.3 15.1 1.48 4.05 5.53 — 41,676 41,676 2.14 5.57 1.96 43,392 <br />Average <br />Daily <br />(Max) <br />— — — — — — — — — — — — — — — — — — <br />Unmit. 5.23 5.07 12.8 12.1 0.04 0.40 1.35 1.75 0.35 0.41 0.76 — 5,503 5,503 0.27 0.56 3.27 5,678 <br />Annual <br />(Max) <br />— — — — — — — — — — — — — — — — — — <br />Unmit. 0.95 0.93 2.34 2.21 0.01 0.07 0.25 0.32 0.06 0.07 0.14 — 911 911 0.04 0.09 0.54 940 <br />2.2. Construction Emissions by Year, Unmitigated <br />Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) <br />Year TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e <br />Daily - <br />Summer <br />(Max) <br />— — — — — — — — — — — — — — — — — — <br />2026 7.72 5.00 78.9 58.5 0.32 2.17 13.4 15.5 1.83 4.08 5.91 — 44,242 44,242 2.25 5.60 76.0 46,042 <br />2027 27.1 26.8 17.1 24.1 0.04 0.64 0.34 0.99 0.59 0.09 0.68 — 4,615 4,615 0.19 0.12 1.74 4,657 <br />Daily - <br />Winter <br />(Max) <br />— — — — — — — — — — — — — — — — — — <br />2026 6.35 3.86 71.3 45.2 0.30 1.79 13.3 15.1 1.48 4.05 5.53 — 41,676 41,676 2.14 5.57 1.96 43,392 <br />Appendix B 12 <br />------------------- <br />-------------------