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HomeMy WebLinkAboutAppendix A - AQ, GHG ModelingAppendix A Air Quality and Greenhouse Gas Modeling Gasworks SLO Detailed Report, 4/8/2025 1 / 72 Gasworks SLO Detailed Report Table of Contents 1. Basic Project Information 1.1. Basic Project Information 1.2. Land Use Types 1.3. User-Selected Emission Reduction Measures by Emissions Sector 2. Emissions Summary 2.1. Construction Emissions Compared Against Thresholds 2.2. Construction Emissions by Year, Unmitigated 2.3. Construction Emissions by Year, Mitigated 2.4. Operations Emissions Compared Against Thresholds 2.5. Operations Emissions by Sector, Unmitigated 2.6. Operations Emissions by Sector, Mitigated 3. Construction Emissions Details 3.1. Site Preparation (2026) - Unmitigated 3.2. Site Preparation (2026) - Mitigated 3.3. Grading (2026) - Unmitigated Gasworks SLO Detailed Report, 4/8/2025 2 / 72 3.4. Grading (2026) - Mitigated 3.5. Building Construction (2026) - Unmitigated 3.6. Building Construction (2026) - Mitigated 3.7. Paving (2026) - Unmitigated 3.8. Paving (2026) - Mitigated 3.9. Architectural Coating (2026) - Unmitigated 3.10. Architectural Coating (2026) - Mitigated 4. Operations Emissions Details 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated 4.1.2. Mitigated 4.2. Energy 4.2.1. Electricity Emissions By Land Use - Unmitigated 4.2.2. Electricity Emissions By Land Use - Mitigated 4.2.3. Natural Gas Emissions By Land Use - Unmitigated 4.2.4. Natural Gas Emissions By Land Use - Mitigated 4.3. Area Emissions by Source 4.3.1. Unmitigated Gasworks SLO Detailed Report, 4/8/2025 3 / 72 4.3.2. Mitigated 4.4. Water Emissions by Land Use 4.4.1. Unmitigated 4.4.2. Mitigated 4.5. Waste Emissions by Land Use 4.5.1. Unmitigated 4.5.2. Mitigated 4.6. Refrigerant Emissions by Land Use 4.6.1. Unmitigated 4.6.2. Mitigated 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated 4.7.2. Mitigated 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated 4.8.2. Mitigated 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated Gasworks SLO Detailed Report, 4/8/2025 4 / 72 4.9.2. Mitigated 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated 4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated 4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated 4.10.6. Avoided and Sequestered Emissions by Species - Mitigated 5. Activity Data 5.1. Construction Schedule 5.2. Off-Road Equipment 5.2.1. Unmitigated 5.2.2. Mitigated 5.3. Construction Vehicles 5.3.1. Unmitigated 5.3.2. Mitigated 5.4. Vehicles 5.4.1. Construction Vehicle Control Strategies Gasworks SLO Detailed Report, 4/8/2025 5 / 72 5.5. Architectural Coatings 5.6. Dust Mitigation 5.6.1. Construction Earthmoving Activities 5.6.2. Construction Earthmoving Control Strategies 5.7. Construction Paving 5.8. Construction Electricity Consumption and Emissions Factors 5.9. Operational Mobile Sources 5.9.1. Unmitigated 5.9.2. Mitigated 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated 5.10.1.2. Mitigated 5.10.2. Architectural Coatings 5.10.3. Landscape Equipment 5.10.4. Landscape Equipment - Mitigated 5.11. Operational Energy Consumption 5.11.1. Unmitigated Gasworks SLO Detailed Report, 4/8/2025 6 / 72 5.11.2. Mitigated 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated 5.12.2. Mitigated 5.13. Operational Waste Generation 5.13.1. Unmitigated 5.13.2. Mitigated 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated 5.14.2. Mitigated 5.15. Operational Off-Road Equipment 5.15.1. Unmitigated 5.15.2. Mitigated 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps 5.16.2. Process Boilers 5.17. User Defined 5.18. Vegetation Gasworks SLO Detailed Report, 4/8/2025 7 / 72 5.18.1. Land Use Change 5.18.1.1. Unmitigated 5.18.1.2. Mitigated 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated 5.18.1.2. Mitigated 5.18.2. Sequestration 5.18.2.1. Unmitigated 5.18.2.2. Mitigated 6. Climate Risk Detailed Report 6.1. Climate Risk Summary 6.2. Initial Climate Risk Scores 6.3. Adjusted Climate Risk Scores 6.4. Climate Risk Reduction Measures 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores 7.2. Healthy Places Index Scores 7.3. Overall Health & Equity Scores Gasworks SLO Detailed Report, 4/8/2025 8 / 72 7.4. Health & Equity Measures 7.5. Evaluation Scorecard 7.6. Health & Equity Custom Measures 8. User Changes to Default Data Gasworks SLO Detailed Report, 4/8/2025 9 / 72 1. Basic Project Information 1.1. Basic Project Information Data Field Value Project Name Gasworks SLO Construction Start Date 1/5/2026 Operational Year 2028 Lead Agency — Land Use Scale Project/site Analysis Level for Defaults County Windspeed (m/s)3.20 Precipitation (days)32.4 Location 280 Pismo St, San Luis Obispo, CA 93401, USA County San Luis Obispo City San Luis Obispo Air District San Luis Obispo County APCD Air Basin South Central Coast TAZ 3329 EDFZ 6 Electric Utility Pacific Gas & Electric Company Gas Utility Southern California Gas App Version 2022.1.1.29 1.2. Land Use Types Land Use Subtype Size Unit Lot Acreage Building Area (sq ft)Landscape Area (sq ft) Special Landscape Area (sq ft) Population Description Apartments Mid Rise 49.0 Dwelling Unit 1.29 47,040 0.00 0.00 108 — Gasworks SLO Detailed Report, 4/8/2025 10 / 72 User Defined Commercial 1.00 User Defined Unit 0.00 2,190 0.00 0.00 —— 1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector #Measure Title Construction C-11 Limit Vehicle Speeds on Unpaved Roads 2. Emissions Summary 2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit.TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unmit.1.38 1.16 8.83 11.1 0.02 0.29 0.24 0.53 0.27 0.06 0.33 —2,140 2,140 0.08 0.04 1.16 2,156 Mit.1.38 1.16 8.83 11.1 0.02 0.29 0.24 0.53 0.27 0.06 0.33 —2,140 2,140 0.08 0.04 1.16 2,156 % Reduced —————————————————— Daily, Winter (Max) —————————————————— Unmit.83.9 83.9 13.2 14.5 0.02 0.58 2.87 3.46 0.54 1.36 1.90 —2,727 2,727 0.11 0.06 0.03 2,747 Mit.83.9 83.9 13.2 14.5 0.02 0.58 2.87 3.46 0.54 1.36 1.90 —2,727 2,727 0.11 0.06 0.03 2,747 % Reduced —————————————————— Average Daily (Max) —————————————————— Unmit.3.10 2.97 5.20 6.52 0.01 0.18 0.18 0.35 0.16 0.05 0.21 —1,244 1,244 0.05 0.02 0.28 1,252 Mit.3.10 2.97 5.20 6.52 0.01 0.18 0.18 0.35 0.16 0.05 0.21 —1,244 1,244 0.05 0.02 0.28 1,252 Gasworks SLO Detailed Report, 4/8/2025 11 / 72 % Reduced —————————————————— Annual (Max) —————————————————— Unmit.0.57 0.54 0.95 1.19 < 0.005 0.03 0.03 0.06 0.03 0.01 0.04 —206 206 0.01 < 0.005 0.05 207 Mit.0.57 0.54 0.95 1.19 < 0.005 0.03 0.03 0.06 0.03 0.01 0.04 —206 206 0.01 < 0.005 0.05 207 % Reduced —————————————————— 2.2. Construction Emissions by Year, Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily - Summer (Max) —————————————————— 2026 1.38 1.16 8.83 11.1 0.02 0.29 0.24 0.53 0.27 0.06 0.33 —2,140 2,140 0.08 0.04 1.16 2,156 Daily - Winter (Max) —————————————————— 2026 83.9 83.9 13.2 14.5 0.02 0.58 2.87 3.46 0.54 1.36 1.90 —2,727 2,727 0.11 0.06 0.03 2,747 Average Daily —————————————————— 2026 3.10 2.97 5.20 6.52 0.01 0.18 0.18 0.35 0.16 0.05 0.21 —1,244 1,244 0.05 0.02 0.28 1,252 Annual —————————————————— 2026 0.57 0.54 0.95 1.19 < 0.005 0.03 0.03 0.06 0.03 0.01 0.04 —206 206 0.01 < 0.005 0.05 207 2.3. Construction Emissions by Year, Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Gasworks SLO Detailed Report, 4/8/2025 12 / 72 ——————————————————Daily - Summer (Max) 2026 1.38 1.16 8.83 11.1 0.02 0.29 0.24 0.53 0.27 0.06 0.33 —2,140 2,140 0.08 0.04 1.16 2,156 Daily - Winter (Max) —————————————————— 2026 83.9 83.9 13.2 14.5 0.02 0.58 2.87 3.46 0.54 1.36 1.90 —2,727 2,727 0.11 0.06 0.03 2,747 Average Daily —————————————————— 2026 3.10 2.97 5.20 6.52 0.01 0.18 0.18 0.35 0.16 0.05 0.21 —1,244 1,244 0.05 0.02 0.28 1,252 Annual —————————————————— 2026 0.57 0.54 0.95 1.19 < 0.005 0.03 0.03 0.06 0.03 0.01 0.04 —206 206 0.01 < 0.005 0.05 207 2.4. Operations Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit.TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unmit.2.86 2.78 0.85 7.03 0.01 0.03 0.66 0.69 0.03 0.17 0.20 20.8 1,265 1,286 2.19 0.05 2.79 1,359 Daily, Winter (Max) —————————————————— Unmit.2.57 2.50 0.87 4.43 0.01 0.03 0.66 0.69 0.03 0.17 0.20 20.8 1,235 1,255 2.19 0.06 0.40 1,328 Average Daily (Max) —————————————————— Unmit.2.75 2.68 0.86 6.69 0.01 0.03 0.61 0.65 0.03 0.16 0.19 20.8 1,208 1,229 2.19 0.05 1.34 1,301 Annual (Max) —————————————————— Unmit.0.50 0.49 0.16 1.22 < 0.005 0.01 0.11 0.12 0.01 0.03 0.03 3.44 200 203 0.36 0.01 0.22 215 Gasworks SLO Detailed Report, 4/8/2025 13 / 72 2.5. Operations Emissions by Sector, Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Mobile 1.08 1.03 0.52 4.02 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —778 778 0.06 0.05 2.45 796 Area 1.74 1.73 0.03 2.88 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 7.82 7.82 < 0.005 < 0.005 —7.85 Energy 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —474 474 0.05 < 0.005 —476 Water ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Waste ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Refrig.————————————————0.34 0.34 Total 2.86 2.78 0.85 7.03 0.01 0.03 0.66 0.69 0.03 0.17 0.20 20.8 1,265 1,286 2.19 0.05 2.79 1,359 Daily, Winter (Max) —————————————————— Mobile 1.06 1.01 0.56 4.30 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —756 756 0.06 0.05 0.06 772 Area 1.47 1.47 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Energy 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —474 474 0.05 < 0.005 —476 Water ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Waste ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Refrig.————————————————0.34 0.34 Total 2.57 2.50 0.87 4.43 0.01 0.03 0.66 0.69 0.03 0.17 0.20 20.8 1,235 1,255 2.19 0.06 0.40 1,328 Average Daily —————————————————— Mobile 1.00 0.95 0.53 3.96 0.01 0.01 0.61 0.62 0.01 0.16 0.16 —722 722 0.06 0.04 1.01 738 Area 1.72 1.70 0.02 2.60 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 7.07 7.07 < 0.005 < 0.005 —7.10 Energy 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —474 474 0.05 < 0.005 —476 Water ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Waste ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Gasworks SLO Detailed Report, 4/8/2025 14 / 72 Refrig.————————————————0.34 0.34 Total 2.75 2.68 0.86 6.69 0.01 0.03 0.61 0.65 0.03 0.16 0.19 20.8 1,208 1,229 2.19 0.05 1.34 1,301 Annual —————————————————— Mobile 0.18 0.17 0.10 0.72 < 0.005 < 0.005 0.11 0.11 < 0.005 0.03 0.03 —120 120 0.01 0.01 0.17 122 Area 0.31 0.31 < 0.005 0.48 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 1.17 1.17 < 0.005 < 0.005 —1.18 Energy 0.01 < 0.005 0.06 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —78.5 78.5 0.01 < 0.005 —78.8 Water ———————————0.47 0.74 1.21 0.05 < 0.005 —2.76 Waste ———————————2.97 0.00 2.97 0.30 0.00 —10.4 Refrig.————————————————0.06 0.06 Total 0.50 0.49 0.16 1.22 < 0.005 0.01 0.11 0.12 0.01 0.03 0.03 3.44 200 203 0.36 0.01 0.22 215 2.6. Operations Emissions by Sector, Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Mobile 1.08 1.03 0.52 4.02 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —778 778 0.06 0.05 2.45 796 Area 1.74 1.73 0.03 2.88 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 7.82 7.82 < 0.005 < 0.005 —7.85 Energy 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —474 474 0.05 < 0.005 —476 Water ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Waste ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Refrig.————————————————0.34 0.34 Total 2.86 2.78 0.85 7.03 0.01 0.03 0.66 0.69 0.03 0.17 0.20 20.8 1,265 1,286 2.19 0.05 2.79 1,359 Daily, Winter (Max) —————————————————— Mobile 1.06 1.01 0.56 4.30 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —756 756 0.06 0.05 0.06 772 Area 1.47 1.47 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Gasworks SLO Detailed Report, 4/8/2025 15 / 72 Energy 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —474 474 0.05 < 0.005 —476 Water ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Waste ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Refrig.————————————————0.34 0.34 Total 2.57 2.50 0.87 4.43 0.01 0.03 0.66 0.69 0.03 0.17 0.20 20.8 1,235 1,255 2.19 0.06 0.40 1,328 Average Daily —————————————————— Mobile 1.00 0.95 0.53 3.96 0.01 0.01 0.61 0.62 0.01 0.16 0.16 —722 722 0.06 0.04 1.01 738 Area 1.72 1.70 0.02 2.60 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 7.07 7.07 < 0.005 < 0.005 —7.10 Energy 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —474 474 0.05 < 0.005 —476 Water ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Waste ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Refrig.————————————————0.34 0.34 Total 2.75 2.68 0.86 6.69 0.01 0.03 0.61 0.65 0.03 0.16 0.19 20.8 1,208 1,229 2.19 0.05 1.34 1,301 Annual —————————————————— Mobile 0.18 0.17 0.10 0.72 < 0.005 < 0.005 0.11 0.11 < 0.005 0.03 0.03 —120 120 0.01 0.01 0.17 122 Area 0.31 0.31 < 0.005 0.48 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 1.17 1.17 < 0.005 < 0.005 —1.18 Energy 0.01 < 0.005 0.06 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —78.5 78.5 0.01 < 0.005 —78.8 Water ———————————0.47 0.74 1.21 0.05 < 0.005 —2.76 Waste ———————————2.97 0.00 2.97 0.30 0.00 —10.4 Refrig.————————————————0.06 0.06 Total 0.50 0.49 0.16 1.22 < 0.005 0.01 0.11 0.12 0.01 0.03 0.03 3.44 200 203 0.36 0.01 0.22 215 3. Construction Emissions Details 3.1. Site Preparation (2026) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Gasworks SLO Detailed Report, 4/8/2025 16 / 72 Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 1.47 1.24 11.0 11.7 0.02 0.51 —0.51 0.47 —0.47 —2,065 2,065 0.08 0.02 —2,072 Dust From Material Movement ——————2.44 2.44 —1.17 1.17 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Roa d Equipm ent 0.01 0.01 0.06 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —11.3 11.3 < 0.005 < 0.005 —11.4 Dust From Material Movement ——————0.01 0.01 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —1.87 1.87 < 0.005 < 0.005 —1.88 Dust From Material Movement ——————< 0.005 < 0.005 —< 0.005 < 0.005 ——————— Gasworks SLO Detailed Report, 4/8/2025 17 / 72 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.03 0.03 0.02 0.22 0.00 0.00 0.04 0.04 0.00 0.01 0.01 —43.0 43.0 < 0.005 < 0.005 < 0.005 43.7 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.24 0.24 < 0.005 < 0.005 < 0.005 0.24 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.04 0.04 < 0.005 < 0.005 < 0.005 0.04 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.2. Site Preparation (2026) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Gasworks SLO Detailed Report, 4/8/2025 18 / 72 Off-Roa Equipment 1.47 1.24 11.0 11.7 0.02 0.51 —0.51 0.47 —0.47 —2,065 2,065 0.08 0.02 —2,072 Dust From Material Movement ——————2.44 2.44 —1.17 1.17 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Roa d Equipm ent 0.01 0.01 0.06 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —11.3 11.3 < 0.005 < 0.005 —11.4 Dust From Material Movement ——————0.01 0.01 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —1.87 1.87 < 0.005 < 0.005 —1.88 Dust From Material Movement ——————< 0.005 < 0.005 —< 0.005 < 0.005 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Gasworks SLO Detailed Report, 4/8/2025 19 / 72 ——————————————————Daily, Winter (Max) Worker 0.03 0.03 0.02 0.22 0.00 0.00 0.04 0.04 0.00 0.01 0.01 —43.0 43.0 < 0.005 < 0.005 < 0.005 43.7 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.24 0.24 < 0.005 < 0.005 < 0.005 0.24 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.04 0.04 < 0.005 < 0.005 < 0.005 0.04 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.3. Grading (2026) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 1.70 1.42 12.9 14.0 0.02 0.58 —0.58 0.53 —0.53 —2,455 2,455 0.10 0.02 —2,463 Gasworks SLO Detailed Report, 4/8/2025 20 / 72 ———————1.341.34—2.762.76——————Dust From Material Movement Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Roa d Equipm ent 0.02 0.02 0.14 0.15 < 0.005 0.01 —0.01 0.01 —0.01 —26.9 26.9 < 0.005 < 0.005 —27.0 Dust From Material Movement ——————0.03 0.03 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.03 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —4.45 4.45 < 0.005 < 0.005 —4.47 Dust From Material Movement ——————0.01 0.01 —< 0.005 < 0.005 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.04 0.04 0.03 0.30 0.00 0.00 0.06 0.06 0.00 0.01 0.01 —57.4 57.4 < 0.005 < 0.005 0.01 58.2 Gasworks SLO Detailed Report, 4/8/2025 21 / 72 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.02 0.01 0.36 0.14 < 0.005 < 0.005 0.05 0.06 < 0.005 0.01 0.02 —215 215 0.01 0.03 0.01 225 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.63 0.63 < 0.005 < 0.005 < 0.005 0.64 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —2.35 2.35 < 0.005 < 0.005 < 0.005 2.47 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.10 0.10 < 0.005 < 0.005 < 0.005 0.11 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —0.39 0.39 < 0.005 < 0.005 < 0.005 0.41 3.4. Grading (2026) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 1.70 1.42 12.9 14.0 0.02 0.58 —0.58 0.53 —0.53 —2,455 2,455 0.10 0.02 —2,463 Dust From Material Movement ——————2.76 2.76 —1.34 1.34 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Gasworks SLO Detailed Report, 4/8/2025 22 / 72 Average Daily —————————————————— Off-Roa d Equipm ent 0.02 0.02 0.14 0.15 < 0.005 0.01 —0.01 0.01 —0.01 —26.9 26.9 < 0.005 < 0.005 —27.0 Dust From Material Movement ——————0.03 0.03 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.03 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —4.45 4.45 < 0.005 < 0.005 —4.47 Dust From Material Movement ——————0.01 0.01 —< 0.005 < 0.005 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.04 0.04 0.03 0.30 0.00 0.00 0.06 0.06 0.00 0.01 0.01 —57.4 57.4 < 0.005 < 0.005 0.01 58.2 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.02 0.01 0.36 0.14 < 0.005 < 0.005 0.05 0.06 < 0.005 0.01 0.02 —215 215 0.01 0.03 0.01 225 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.63 0.63 < 0.005 < 0.005 < 0.005 0.64 Gasworks SLO Detailed Report, 4/8/2025 23 / 72 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —2.35 2.35 < 0.005 < 0.005 < 0.005 2.47 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.10 0.10 < 0.005 < 0.005 < 0.005 0.11 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —0.39 0.39 < 0.005 < 0.005 < 0.005 0.41 3.5. Building Construction (2026) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Off-Roa d Equipm ent 1.22 1.01 8.57 9.96 0.02 0.29 —0.29 0.27 —0.27 —1,801 1,801 0.07 0.01 —1,807 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 1.22 1.01 8.57 9.96 0.02 0.29 —0.29 0.27 —0.27 —1,801 1,801 0.07 0.01 —1,807 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Gasworks SLO Detailed Report, 4/8/2025 24 / 72 990—0.010.04987987—0.15—0.150.16—0.160.015.464.700.560.67Off-Roa d Equipm ent Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent 0.12 0.10 0.86 1.00 < 0.005 0.03 —0.03 0.03 —0.03 —163 163 0.01 < 0.005 —164 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Worker 0.15 0.14 0.08 1.10 0.00 0.00 0.21 0.21 0.00 0.05 0.05 —215 215 0.01 0.01 0.85 219 Vendor 0.01 < 0.005 0.18 0.07 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 —123 123 < 0.005 0.02 0.31 129 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter (Max) —————————————————— Worker 0.15 0.14 0.10 1.08 0.00 0.00 0.21 0.21 0.00 0.05 0.05 —206 206 0.01 0.01 0.02 210 Vendor 0.01 < 0.005 0.18 0.07 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 —123 123 < 0.005 0.02 0.01 129 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker 0.08 0.08 0.05 0.58 0.00 0.00 0.11 0.11 0.00 0.03 0.03 —114 114 < 0.005 0.01 0.20 116 Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 —67.6 67.6 < 0.005 0.01 0.07 70.7 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker 0.01 0.01 0.01 0.11 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 —18.9 18.9 < 0.005 < 0.005 0.03 19.2 Gasworks SLO Detailed Report, 4/8/2025 25 / 72 Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —11.2 11.2 < 0.005 < 0.005 0.01 11.7 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.6. Building Construction (2026) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Off-Roa d Equipm ent 1.22 1.01 8.57 9.96 0.02 0.29 —0.29 0.27 —0.27 —1,801 1,801 0.07 0.01 —1,807 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 1.22 1.01 8.57 9.96 0.02 0.29 —0.29 0.27 —0.27 —1,801 1,801 0.07 0.01 —1,807 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Roa d Equipm ent 0.67 0.56 4.70 5.46 0.01 0.16 —0.16 0.15 —0.15 —987 987 0.04 0.01 —990 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Gasworks SLO Detailed Report, 4/8/2025 26 / 72 Off-Roa Equipment 0.12 0.10 0.86 1.00 < 0.005 0.03 —0.03 0.03 —0.03 —163 163 0.01 < 0.005 —164 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Worker 0.15 0.14 0.08 1.10 0.00 0.00 0.21 0.21 0.00 0.05 0.05 —215 215 0.01 0.01 0.85 219 Vendor 0.01 < 0.005 0.18 0.07 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 —123 123 < 0.005 0.02 0.31 129 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter (Max) —————————————————— Worker 0.15 0.14 0.10 1.08 0.00 0.00 0.21 0.21 0.00 0.05 0.05 —206 206 0.01 0.01 0.02 210 Vendor 0.01 < 0.005 0.18 0.07 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 —123 123 < 0.005 0.02 0.01 129 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker 0.08 0.08 0.05 0.58 0.00 0.00 0.11 0.11 0.00 0.03 0.03 —114 114 < 0.005 0.01 0.20 116 Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 —67.6 67.6 < 0.005 0.01 0.07 70.7 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker 0.01 0.01 0.01 0.11 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 —18.9 18.9 < 0.005 < 0.005 0.03 19.2 Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —11.2 11.2 < 0.005 < 0.005 0.01 11.7 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.7. Paving (2026) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Gasworks SLO Detailed Report, 4/8/2025 27 / 72 Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 0.56 0.47 4.41 6.48 0.01 0.18 —0.18 0.17 —0.17 —991 991 0.04 0.01 —995 Paving 0.00 0.00 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Roa d Equipm ent 0.02 0.01 0.12 0.18 < 0.005 0.01 —0.01 < 0.005 —< 0.005 —27.2 27.2 < 0.005 < 0.005 —27.3 Paving 0.00 0.00 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.02 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —4.50 4.50 < 0.005 < 0.005 —4.51 Paving 0.00 0.00 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Gasworks SLO Detailed Report, 4/8/2025 28 / 72 ——————————————————Daily, Winter (Max) Worker 0.05 0.05 0.03 0.37 0.00 0.00 0.07 0.07 0.00 0.02 0.02 —71.7 71.7 < 0.005 < 0.005 0.01 72.8 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —1.98 1.98 < 0.005 < 0.005 < 0.005 2.01 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.33 0.33 < 0.005 < 0.005 < 0.005 0.33 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.8. Paving (2026) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 0.56 0.47 4.41 6.48 0.01 0.18 —0.18 0.17 —0.17 —991 991 0.04 0.01 —995 Paving 0.00 0.00 ———————————————— Gasworks SLO Detailed Report, 4/8/2025 29 / 72 0.000.000.000.000.000.00—0.000.000.000.000.000.000.000.000.000.000.00Onsite truck Average Daily —————————————————— Off-Roa d Equipm ent 0.02 0.01 0.12 0.18 < 0.005 0.01 —0.01 < 0.005 —< 0.005 —27.2 27.2 < 0.005 < 0.005 —27.3 Paving 0.00 0.00 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.02 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —4.50 4.50 < 0.005 < 0.005 —4.51 Paving 0.00 0.00 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.05 0.05 0.03 0.37 0.00 0.00 0.07 0.07 0.00 0.02 0.02 —71.7 71.7 < 0.005 < 0.005 0.01 72.8 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —1.98 1.98 < 0.005 < 0.005 < 0.005 2.01 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Gasworks SLO Detailed Report, 4/8/2025 30 / 72 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.33 0.33 < 0.005 < 0.005 < 0.005 0.33 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.9. Architectural Coating (2026) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 0.15 0.12 0.86 1.13 < 0.005 0.02 —0.02 0.02 —0.02 —134 134 0.01 < 0.005 —134 Architect ural Coating s 83.8 83.8 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.02 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —3.66 3.66 < 0.005 < 0.005 —3.67 Architect ural Coating s 2.29 2.29 ———————————————— Gasworks SLO Detailed Report, 4/8/2025 31 / 72 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 < 0.005 0.01 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —0.61 0.61 < 0.005 < 0.005 —0.61 Architect ural Coating s 0.42 0.42 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.03 0.03 0.02 0.22 0.00 0.00 0.04 0.04 0.00 0.01 0.01 —41.3 41.3 < 0.005 < 0.005 < 0.005 41.9 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —1.14 1.14 < 0.005 < 0.005 < 0.005 1.16 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.19 0.19 < 0.005 < 0.005 < 0.005 0.19 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Gasworks SLO Detailed Report, 4/8/2025 32 / 72 3.10. Architectural Coating (2026) - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Roa d Equipm ent 0.15 0.12 0.86 1.13 < 0.005 0.02 —0.02 0.02 —0.02 —134 134 0.01 < 0.005 —134 Architect ural Coating s 83.8 83.8 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Roa d Equipm ent < 0.005 < 0.005 0.02 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —3.66 3.66 < 0.005 < 0.005 —3.67 Architect ural Coating s 2.29 2.29 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Gasworks SLO Detailed Report, 4/8/2025 33 / 72 0.61—< 0.005< 0.0050.610.61—< 0.005—< 0.005< 0.005—< 0.005< 0.0050.01< 0.005< 0.005< 0.005Off-Roa d Equipm ent Architect ural Coating s 0.42 0.42 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.03 0.03 0.02 0.22 0.00 0.00 0.04 0.04 0.00 0.01 0.01 —41.3 41.3 < 0.005 < 0.005 < 0.005 41.9 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —1.14 1.14 < 0.005 < 0.005 < 0.005 1.16 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.19 0.19 < 0.005 < 0.005 < 0.005 0.19 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 4. Operations Emissions Details Gasworks SLO Detailed Report, 4/8/2025 34 / 72 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise 1.08 1.03 0.52 4.02 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —778 778 0.06 0.05 2.45 796 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 1.08 1.03 0.52 4.02 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —778 778 0.06 0.05 2.45 796 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise 1.06 1.01 0.56 4.30 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —756 756 0.06 0.05 0.06 772 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 1.06 1.01 0.56 4.30 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —756 756 0.06 0.05 0.06 772 Annual —————————————————— Apartme nts Mid Rise 0.18 0.17 0.10 0.72 < 0.005 < 0.005 0.11 0.11 < 0.005 0.03 0.03 —120 120 0.01 0.01 0.17 122 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 0.18 0.17 0.10 0.72 < 0.005 < 0.005 0.11 0.11 < 0.005 0.03 0.03 —120 120 0.01 0.01 0.17 122 Gasworks SLO Detailed Report, 4/8/2025 35 / 72 4.1.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise 1.08 1.03 0.52 4.02 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —778 778 0.06 0.05 2.45 796 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 1.08 1.03 0.52 4.02 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —778 778 0.06 0.05 2.45 796 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise 1.06 1.01 0.56 4.30 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —756 756 0.06 0.05 0.06 772 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 1.06 1.01 0.56 4.30 0.01 0.01 0.66 0.67 0.01 0.17 0.17 —756 756 0.06 0.05 0.06 772 Annual —————————————————— Apartme nts Mid Rise 0.18 0.17 0.10 0.72 < 0.005 < 0.005 0.11 0.11 < 0.005 0.03 0.03 —120 120 0.01 0.01 0.17 122 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 0.18 0.17 0.10 0.72 < 0.005 < 0.005 0.11 0.11 < 0.005 0.03 0.03 —120 120 0.01 0.01 0.17 122 4.2. Energy Gasworks SLO Detailed Report, 4/8/2025 36 / 72 4.2.1. Electricity Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ————————————81.3 81.3 0.01 < 0.005 —82.1 User Defined Commercial ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————81.3 81.3 0.01 < 0.005 —82.1 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise ————————————81.3 81.3 0.01 < 0.005 —82.1 User Defined Commercial ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————81.3 81.3 0.01 < 0.005 —82.1 Annual —————————————————— Apartme nts Mid Rise ————————————13.5 13.5 < 0.005 < 0.005 —13.6 User Defined Commercial ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————13.5 13.5 < 0.005 < 0.005 —13.6 4.2.2. Electricity Emissions By Land Use - Mitigated Gasworks SLO Detailed Report, 4/8/2025 37 / 72 Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ————————————81.3 81.3 0.01 < 0.005 —82.1 User Defined Commercial ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————81.3 81.3 0.01 < 0.005 —82.1 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise ————————————81.3 81.3 0.01 < 0.005 —82.1 User Defined Commercial ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————81.3 81.3 0.01 < 0.005 —82.1 Annual —————————————————— Apartme nts Mid Rise ————————————13.5 13.5 < 0.005 < 0.005 —13.6 User Defined Commercial ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————13.5 13.5 < 0.005 < 0.005 —13.6 4.2.3. Natural Gas Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Gasworks SLO Detailed Report, 4/8/2025 38 / 72 CO2eRN2OCH4CO2TNBCO2BCO2PM2.5TPM2.5DPM2.5EPM10TPM10DPM10ESO2CONOxROGTOGLand Use Daily, Summer (Max) —————————————————— Apartme nts Mid Rise 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 Annual —————————————————— Apartme nts Mid Rise 0.01 < 0.005 0.06 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —65.0 65.0 0.01 < 0.005 —65.2 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.01 < 0.005 0.06 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —65.0 65.0 0.01 < 0.005 —65.2 4.2.4. Natural Gas Emissions By Land Use - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Gasworks SLO Detailed Report, 4/8/2025 39 / 72 Daily, Summer (Max) —————————————————— Apartme nts Mid Rise 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.04 0.02 0.31 0.13 < 0.005 0.03 —0.03 0.03 —0.03 —393 393 0.03 < 0.005 —394 Annual —————————————————— Apartme nts Mid Rise 0.01 < 0.005 0.06 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —65.0 65.0 0.01 < 0.005 —65.2 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.01 < 0.005 0.06 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —65.0 65.0 0.01 < 0.005 —65.2 4.3. Area Emissions by Source 4.3.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Gasworks SLO Detailed Report, 4/8/2025 40 / 72 Daily, Summer (Max) —————————————————— Hearths 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Consum er Product s 1.05 1.05 ———————————————— Architect ural Coating s 0.42 0.42 ———————————————— Landsca pe Equipm ent 0.27 0.26 0.03 2.88 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —7.82 7.82 < 0.005 < 0.005 —7.85 Total 1.74 1.73 0.03 2.88 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 7.82 7.82 < 0.005 < 0.005 —7.85 Daily, Winter (Max) —————————————————— Hearths 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Consum er Product s 1.05 1.05 ———————————————— Architect ural Coating s 0.42 0.42 ———————————————— Total 1.47 1.47 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Annual —————————————————— Hearths 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Consum er Product s 0.19 0.19 ———————————————— Gasworks SLO Detailed Report, 4/8/2025 41 / 72 ————————————————0.080.08Architect ural Landsca pe Equipm ent 0.05 0.04 < 0.005 0.48 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —1.17 1.17 < 0.005 < 0.005 —1.18 Total 0.31 0.31 < 0.005 0.48 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 1.17 1.17 < 0.005 < 0.005 —1.18 4.3.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Hearths 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Consum er Product s 1.05 1.05 ———————————————— Architect ural Coating s 0.42 0.42 ———————————————— Landsca pe Equipm ent 0.27 0.26 0.03 2.88 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —7.82 7.82 < 0.005 < 0.005 —7.85 Total 1.74 1.73 0.03 2.88 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 7.82 7.82 < 0.005 < 0.005 —7.85 Daily, Winter (Max) —————————————————— Hearths 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Consum er Product s 1.05 1.05 ———————————————— Gasworks SLO Detailed Report, 4/8/2025 42 / 72 Architect Coatings 0.42 0.42 ———————————————— Total 1.47 1.47 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Annual —————————————————— Hearths 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 —0.00 Consum er Product s 0.19 0.19 ———————————————— Architect ural Coating s 0.08 0.08 ———————————————— Landsca pe Equipm ent 0.05 0.04 < 0.005 0.48 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —1.17 1.17 < 0.005 < 0.005 —1.18 Total 0.31 0.31 < 0.005 0.48 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 0.00 1.17 1.17 < 0.005 < 0.005 —1.18 4.4. Water Emissions by Land Use 4.4.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ———————————2.84 4.48 7.32 0.29 0.01 —16.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Gasworks SLO Detailed Report, 4/8/2025 43 / 72 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise ———————————2.84 4.48 7.32 0.29 0.01 —16.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Annual —————————————————— Apartme nts Mid Rise ———————————0.47 0.74 1.21 0.05 < 0.005 —2.76 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————0.47 0.74 1.21 0.05 < 0.005 —2.76 4.4.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ———————————2.84 4.48 7.32 0.29 0.01 —16.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Gasworks SLO Detailed Report, 4/8/2025 44 / 72 ——————————————————Daily, Winter (Max) Apartme nts Mid Rise ———————————2.84 4.48 7.32 0.29 0.01 —16.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————2.84 4.48 7.32 0.29 0.01 —16.7 Annual —————————————————— Apartme nts Mid Rise ———————————0.47 0.74 1.21 0.05 < 0.005 —2.76 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————0.47 0.74 1.21 0.05 < 0.005 —2.76 4.5. Waste Emissions by Land Use 4.5.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ———————————17.9 0.00 17.9 1.79 0.00 —62.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Gasworks SLO Detailed Report, 4/8/2025 45 / 72 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise ———————————17.9 0.00 17.9 1.79 0.00 —62.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Annual —————————————————— Apartme nts Mid Rise ———————————2.97 0.00 2.97 0.30 0.00 —10.4 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————2.97 0.00 2.97 0.30 0.00 —10.4 4.5.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ———————————17.9 0.00 17.9 1.79 0.00 —62.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Gasworks SLO Detailed Report, 4/8/2025 46 / 72 ——————————————————Daily, Winter (Max) Apartme nts Mid Rise ———————————17.9 0.00 17.9 1.79 0.00 —62.7 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————17.9 0.00 17.9 1.79 0.00 —62.7 Annual —————————————————— Apartme nts Mid Rise ———————————2.97 0.00 2.97 0.30 0.00 —10.4 User Defined Commercial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————2.97 0.00 2.97 0.30 0.00 —10.4 4.6. Refrigerant Emissions by Land Use 4.6.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ————————————————0.34 0.34 Total ————————————————0.34 0.34 Daily, Winter (Max) —————————————————— Gasworks SLO Detailed Report, 4/8/2025 47 / 72 Apartme Mid Rise ————————————————0.34 0.34 Total ————————————————0.34 0.34 Annual —————————————————— Apartme nts Mid Rise ————————————————0.06 0.06 Total ————————————————0.06 0.06 4.6.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Apartme nts Mid Rise ————————————————0.34 0.34 Total ————————————————0.34 0.34 Daily, Winter (Max) —————————————————— Apartme nts Mid Rise ————————————————0.34 0.34 Total ————————————————0.34 0.34 Annual —————————————————— Apartme nts Mid Rise ————————————————0.06 0.06 Total ————————————————0.06 0.06 Gasworks SLO Detailed Report, 4/8/2025 48 / 72 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm ent Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.7.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm ent Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Gasworks SLO Detailed Report, 4/8/2025 49 / 72 Total —————————————————— 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm ent Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.8.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm ent Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Gasworks SLO Detailed Report, 4/8/2025 50 / 72 Annual —————————————————— Total —————————————————— 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm ent Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.9.2. Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm ent Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Gasworks SLO Detailed Report, 4/8/2025 51 / 72 Total —————————————————— Annual —————————————————— Total —————————————————— 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetati on TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Gasworks SLO Detailed Report, 4/8/2025 52 / 72 Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Daily, Winter (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Gasworks SLO Detailed Report, 4/8/2025 53 / 72 Annual —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— 4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetati on TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Gasworks SLO Detailed Report, 4/8/2025 54 / 72 ——————————————————Daily, Summer (Max) Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.6. Avoided and Sequestered Emissions by Species - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Daily, Winter (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Gasworks SLO Detailed Report, 4/8/2025 55 / 72 ——————————————————Sequest ered Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Annual —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— 5. Activity Data 5.1. Construction Schedule Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Site Preparation Site Preparation 2/3/2026 2/5/2026 5.00 2.00 — Grading Grading 2/6/2026 2/11/2026 5.00 4.00 — Building Construction Building Construction 2/12/2026 11/19/2026 5.00 200 — Paving Paving 11/20/2026 12/4/2026 5.00 10.0 — Architectural Coating Architectural Coating 12/5/2026 12/19/2026 5.00 10.0 — 5.2. Off-Road Equipment Gasworks SLO Detailed Report, 4/8/2025 56 / 72 5.2.1. Unmitigated Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Site Preparation Graders Diesel Average 1.00 8.00 148 0.41 Site Preparation Rubber Tired Dozers Diesel Average 1.00 7.00 367 0.40 Site Preparation Tractors/Loaders/Back hoes Diesel Average 1.00 8.00 84.0 0.37 Grading Graders Diesel Average 1.00 8.00 148 0.41 Grading Tractors/Loaders/Back hoes Diesel Average 2.00 7.00 84.0 0.37 Grading Rubber Tired Dozers Diesel Average 1.00 8.00 367 0.40 Building Construction Cranes Diesel Average 1.00 6.00 367 0.29 Building Construction Forklifts Diesel Average 1.00 6.00 82.0 0.20 Building Construction Generator Sets Diesel Average 1.00 8.00 14.0 0.74 Building Construction Tractors/Loaders/Back hoes Diesel Average 1.00 6.00 84.0 0.37 Building Construction Welders Diesel Average 3.00 8.00 46.0 0.45 Paving Tractors/Loaders/Back hoes Diesel Average 1.00 8.00 84.0 0.37 Paving Pavers Diesel Average 1.00 6.00 81.0 0.42 Paving Paving Equipment Diesel Average 1.00 8.00 89.0 0.36 Paving Rollers Diesel Average 1.00 7.00 36.0 0.38 Paving Cement and Mortar Mixers Diesel Average 1.00 6.00 10.0 0.56 Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48 5.2.2. Mitigated Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Site Preparation Graders Diesel Average 1.00 8.00 148 0.41 Site Preparation Rubber Tired Dozers Diesel Average 1.00 7.00 367 0.40 Gasworks SLO Detailed Report, 4/8/2025 57 / 72 Site Preparation Tractors/Loaders/Back Diesel Average 1.00 8.00 84.0 0.37 Grading Graders Diesel Average 1.00 8.00 148 0.41 Grading Tractors/Loaders/Back hoes Diesel Average 2.00 7.00 84.0 0.37 Grading Rubber Tired Dozers Diesel Average 1.00 8.00 367 0.40 Building Construction Cranes Diesel Average 1.00 6.00 367 0.29 Building Construction Forklifts Diesel Average 1.00 6.00 82.0 0.20 Building Construction Generator Sets Diesel Average 1.00 8.00 14.0 0.74 Building Construction Tractors/Loaders/Back hoes Diesel Average 1.00 6.00 84.0 0.37 Building Construction Welders Diesel Average 3.00 8.00 46.0 0.45 Paving Tractors/Loaders/Back hoes Diesel Average 1.00 8.00 84.0 0.37 Paving Pavers Diesel Average 1.00 6.00 81.0 0.42 Paving Paving Equipment Diesel Average 1.00 8.00 89.0 0.36 Paving Rollers Diesel Average 1.00 7.00 36.0 0.38 Paving Cement and Mortar Mixers Diesel Average 1.00 6.00 10.0 0.56 Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48 5.3. Construction Vehicles 5.3.1. Unmitigated Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Site Preparation ———— Site Preparation Worker 7.50 8.10 LDA,LDT1,LDT2 Site Preparation Vendor —6.90 HHDT,MHDT Site Preparation Hauling 0.00 8.00 HHDT Site Preparation Onsite truck ——HHDT Grading ———— Gasworks SLO Detailed Report, 4/8/2025 58 / 72 Grading Worker 10.0 8.10 LDA,LDT1,LDT2 Grading Vendor —6.90 HHDT,MHDT Grading Hauling 7.25 8.00 HHDT Grading Onsite truck ——HHDT Building Construction ———— Building Construction Worker 36.0 8.10 LDA,LDT1,LDT2 Building Construction Vendor 5.60 6.90 HHDT,MHDT Building Construction Hauling 0.00 8.00 HHDT Building Construction Onsite truck ——HHDT Paving ———— Paving Worker 12.5 8.10 LDA,LDT1,LDT2 Paving Vendor —6.90 HHDT,MHDT Paving Hauling 0.00 8.00 HHDT Paving Onsite truck ——HHDT Architectural Coating ———— Architectural Coating Worker 7.20 8.10 LDA,LDT1,LDT2 Architectural Coating Vendor —6.90 HHDT,MHDT Architectural Coating Hauling 0.00 8.00 HHDT Architectural Coating Onsite truck ——HHDT 5.3.2. Mitigated Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Site Preparation ———— Site Preparation Worker 7.50 8.10 LDA,LDT1,LDT2 Site Preparation Vendor —6.90 HHDT,MHDT Site Preparation Hauling 0.00 8.00 HHDT Site Preparation Onsite truck ——HHDT Grading ———— Gasworks SLO Detailed Report, 4/8/2025 59 / 72 Grading Worker 10.0 8.10 LDA,LDT1,LDT2 Grading Vendor —6.90 HHDT,MHDT Grading Hauling 7.25 8.00 HHDT Grading Onsite truck ——HHDT Building Construction ———— Building Construction Worker 36.0 8.10 LDA,LDT1,LDT2 Building Construction Vendor 5.60 6.90 HHDT,MHDT Building Construction Hauling 0.00 8.00 HHDT Building Construction Onsite truck ——HHDT Paving ———— Paving Worker 12.5 8.10 LDA,LDT1,LDT2 Paving Vendor —6.90 HHDT,MHDT Paving Hauling 0.00 8.00 HHDT Paving Onsite truck ——HHDT Architectural Coating ———— Architectural Coating Worker 7.20 8.10 LDA,LDT1,LDT2 Architectural Coating Vendor —6.90 HHDT,MHDT Architectural Coating Hauling 0.00 8.00 HHDT Architectural Coating Onsite truck ——HHDT 5.4. Vehicles 5.4.1. Construction Vehicle Control Strategies Non-applicable. No control strategies activated by user. 5.5. Architectural Coatings Phase Name Residential Interior Area Coated (sq ft) Residential Exterior Area Coated (sq ft) Non-Residential Interior Area Coated (sq ft) Non-Residential Exterior Area Coated (sq ft) Parking Area Coated (sq ft) Architectural Coating 95,256 31,752 3,285 1,095 — Gasworks SLO Detailed Report, 4/8/2025 60 / 72 5.6. Dust Mitigation 5.6.1. Construction Earthmoving Activities Phase Name Material Imported (Cubic Yards) Material Exported (Cubic Yards) Acres Graded (acres)Material Demolished (sq. ft.)Acres Paved (acres) Site Preparation 0.00 0.00 1.88 0.00 — Grading 0.00 225 4.00 0.00 — Paving 0.00 0.00 0.00 0.00 1.25 5.6.2. Construction Earthmoving Control Strategies Control Strategies Applied Frequency (per day)PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61%61% 5.7. Construction Paving Land Use Area Paved (acres)% Asphalt Apartments Mid Rise 1.25 0% User Defined Commercial 0.00 0% 5.8. Construction Electricity Consumption and Emissions Factors kWh per Year and Emission Factor (lb/MWh) Year kWh per Year CO2 CH4 N2O 2026 0.00 204 0.03 < 0.005 5.9. Operational Mobile Sources 5.9.1. Unmitigated Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Gasworks SLO Detailed Report, 4/8/2025 61 / 72 Apartments Mid Rise 267 241 200 92,491 931 840 700 323,002 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.9.2. Mitigated Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Apartments Mid Rise 267 241 200 92,491 931 840 700 323,002 User Defined Commercial 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated Hearth Type Unmitigated (number) Apartments Mid Rise — Wood Fireplaces 0 Gas Fireplaces 0 Propane Fireplaces 0 Electric Fireplaces 0 No Fireplaces 49 Conventional Wood Stoves 0 Catalytic Wood Stoves 0 Non-Catalytic Wood Stoves 0 Pellet Wood Stoves 0 Gasworks SLO Detailed Report, 4/8/2025 62 / 72 5.10.1.2. Mitigated Hearth Type Unmitigated (number) Apartments Mid Rise — Wood Fireplaces 0 Gas Fireplaces 0 Propane Fireplaces 0 Electric Fireplaces 0 No Fireplaces 49 Conventional Wood Stoves 0 Catalytic Wood Stoves 0 Non-Catalytic Wood Stoves 0 Pellet Wood Stoves 0 5.10.2. Architectural Coatings Residential Interior Area Coated (sq ft) Residential Exterior Area Coated (sq ft) Non-Residential Interior Area Coated (sq ft) Non-Residential Exterior Area Coated (sq ft) Parking Area Coated (sq ft) 95256 31,752 3,285 1,095 — 5.10.3. Landscape Equipment Season Unit Value Snow Days day/yr 0.00 Summer Days day/yr 330 5.10.4. Landscape Equipment - Mitigated Season Unit Value Snow Days day/yr 0.00 Summer Days day/yr 330 Gasworks SLO Detailed Report, 4/8/2025 63 / 72 5.11. Operational Energy Consumption 5.11.1. Unmitigated Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr)CO2 CH4 N2O Natural Gas (kBTU/yr) Apartments Mid Rise 145,427 204 0.0330 0.0040 1,225,308 User Defined Commercial 0.00 204 0.0330 0.0040 0.00 5.11.2. Mitigated Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr)CO2 CH4 N2O Natural Gas (kBTU/yr) Apartments Mid Rise 145,427 204 0.0330 0.0040 1,225,308 User Defined Commercial 0.00 204 0.0330 0.0040 0.00 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated Land Use Indoor Water (gal/year)Outdoor Water (gal/year) Apartments Mid Rise 1,480,878 0.00 User Defined Commercial 0.00 0.00 5.12.2. Mitigated Land Use Indoor Water (gal/year)Outdoor Water (gal/year) Apartments Mid Rise 1,480,878 0.00 User Defined Commercial 0.00 0.00 5.13. Operational Waste Generation Gasworks SLO Detailed Report, 4/8/2025 64 / 72 5.13.1. Unmitigated Land Use Waste (ton/year)Cogeneration (kWh/year) Apartments Mid Rise 33.3 — User Defined Commercial 0.00 — 5.13.2. Mitigated Land Use Waste (ton/year)Cogeneration (kWh/year) Apartments Mid Rise 33.3 — User Defined Commercial 0.00 — 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated Land Use Type Equipment Type Refrigerant GWP Quantity (kg)Operations Leak Rate Service Leak Rate Times Serviced Apartments Mid Rise Average room A/C & Other residential A/C and heat pumps R-410A 2,088 < 0.005 2.50 2.50 10.0 Apartments Mid Rise Household refrigerators and/or freezers R-134a 1,430 0.12 0.60 0.00 1.00 5.14.2. Mitigated Land Use Type Equipment Type Refrigerant GWP Quantity (kg)Operations Leak Rate Service Leak Rate Times Serviced Apartments Mid Rise Average room A/C & Other residential A/C and heat pumps R-410A 2,088 < 0.005 2.50 2.50 10.0 Apartments Mid Rise Household refrigerators and/or freezers R-134a 1,430 0.12 0.60 0.00 1.00 Gasworks SLO Detailed Report, 4/8/2025 65 / 72 5.15. Operational Off-Road Equipment 5.15.1. Unmitigated Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor 5.15.2. Mitigated Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps Equipment Type Fuel Type Number per Day Hours per Day Hours per Year Horsepower Load Factor 5.16.2. Process Boilers Equipment Type Fuel Type Number Boiler Rating (MMBtu/hr)Daily Heat Input (MMBtu/day)Annual Heat Input (MMBtu/yr) 5.17. User Defined Equipment Type Fuel Type 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres Gasworks SLO Detailed Report, 4/8/2025 66 / 72 5.18.1.2. Mitigated Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated Biomass Cover Type Initial Acres Final Acres 5.18.1.2. Mitigated Biomass Cover Type Initial Acres Final Acres 5.18.2. Sequestration 5.18.2.1. Unmitigated Tree Type Number Electricity Saved (kWh/year)Natural Gas Saved (btu/year) 5.18.2.2. Mitigated Tree Type Number Electricity Saved (kWh/year)Natural Gas Saved (btu/year) 6. Climate Risk Detailed Report 6.1. Climate Risk Summary Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes GHG emissions will continue to rise strongly through 2050 and then plateau around 2100. Climate Hazard Result for Project Location Unit Temperature and Extreme Heat 6.73 annual days of extreme heat Extreme Precipitation 7.35 annual days with precipitation above 20 mm Gasworks SLO Detailed Report, 4/8/2025 67 / 72 Sea Level Rise —meters of inundation depth Wildfire 50.5 annual hectares burned Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from observed historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if received over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (Radke et al., 2017, CEC-500-2017-008), and consider inundation location and depth for the San Francisco Bay, the Sacramento-San Joaquin River Delta and California coast resulting different increments of sea level rise coupled with extreme storm events. Users may select from four scenarios to view the range in potential inundation depth for the grid cell. The four scenarios are: No rise, 0.5 meter, 1.0 meter, 1.41 meters Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. 6.2. Initial Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat N/A N/A N/A N/A Extreme Precipitation N/A N/A N/A N/A Sea Level Rise N/A N/A N/A N/A Wildfire N/A N/A N/A N/A Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation N/A N/A N/A N/A The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures. 6.3. Adjusted Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat N/A N/A N/A N/A Gasworks SLO Detailed Report, 4/8/2025 68 / 72 Extreme Precipitation N/A N/A N/A N/A Sea Level Rise N/A N/A N/A N/A Wildfire N/A N/A N/A N/A Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation N/A N/A N/A N/A The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures. 6.4. Climate Risk Reduction Measures 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. Indicator Result for Project Census Tract Exposure Indicators — AQ-Ozone 14.9 AQ-PM 13.4 AQ-DPM 51.4 Drinking Water 55.7 Lead Risk Housing 53.9 Pesticides 20.7 Toxic Releases 14.5 Traffic 35.9 Effect Indicators — Gasworks SLO Detailed Report, 4/8/2025 69 / 72 CleanUp Sites 95.6 Groundwater 94.7 Haz Waste Facilities/Generators 47.4 Impaired Water Bodies 58.7 Solid Waste 24.8 Sensitive Population — Asthma 40.6 Cardio-vascular 16.8 Low Birth Weights 11.9 Socioeconomic Factor Indicators — Education 28.4 Housing 70.2 Linguistic 10.4 Poverty 53.9 Unemployment 17.1 7.2. Healthy Places Index Scores The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. Indicator Result for Project Census Tract Economic — Above Poverty 38.90671115 Employed 83.35685872 Median HI 34.26151675 Education — Bachelor's or higher 81.90683947 High school enrollment 100 Preschool enrollment 77.03066855 Transportation — Gasworks SLO Detailed Report, 4/8/2025 70 / 72 Auto Access 25.58706532 Active commuting 90.96625176 Social — 2-parent households 25.34325677 Voting 74.97754395 Neighborhood — Alcohol availability 17.78519184 Park access 81.35506224 Retail density 88.13037341 Supermarket access 86.10291287 Tree canopy 20.33876556 Housing — Homeownership 18.1701527 Housing habitability 42.78198383 Low-inc homeowner severe housing cost burden 51.84139612 Low-inc renter severe housing cost burden 55.80649301 Uncrowded housing 85.268831 Health Outcomes — Insured adults 61.15744899 Arthritis 0.0 Asthma ER Admissions 73.1 High Blood Pressure 0.0 Cancer (excluding skin)0.0 Asthma 0.0 Coronary Heart Disease 0.0 Chronic Obstructive Pulmonary Disease 0.0 Diagnosed Diabetes 0.0 Life Expectancy at Birth 69.7 Gasworks SLO Detailed Report, 4/8/2025 71 / 72 Cognitively Disabled 39.7 Physically Disabled 46.5 Heart Attack ER Admissions 81.6 Mental Health Not Good 0.0 Chronic Kidney Disease 0.0 Obesity 0.0 Pedestrian Injuries 69.0 Physical Health Not Good 0.0 Stroke 0.0 Health Risk Behaviors — Binge Drinking 0.0 Current Smoker 0.0 No Leisure Time for Physical Activity 0.0 Climate Change Exposures — Wildfire Risk 0.0 SLR Inundation Area 0.0 Children 92.8 Elderly 65.5 English Speaking 77.5 Foreign-born 14.2 Outdoor Workers 59.1 Climate Change Adaptive Capacity — Impervious Surface Cover 67.9 Traffic Density 49.6 Traffic Access 0.0 Other Indices — Hardship 17.7 Other Decision Support — Gasworks SLO Detailed Report, 4/8/2025 72 / 72 2016 Voting 85.7 7.3. Overall Health & Equity Scores Metric Result for Project Census Tract CalEnviroScreen 4.0 Score for Project Location (a)28.0 Healthy Places Index Score for Project Location (b)70.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535)No Project Located in a Low-Income Community (Assembly Bill 1550)No Project Located in a Community Air Protection Program Community (Assembly Bill 617)No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. 7.4. Health & Equity Measures No Health & Equity Measures selected. 7.5. Evaluation Scorecard Health & Equity Evaluation Scorecard not completed. 7.6. Health & Equity Custom Measures No Health & Equity Custom Measures created. 8. User Changes to Default Data Screen Justification Land Use Population calculated consistent with the persons per household estimate of 2.22 provided by the Department of Finance Table E-5 estimates for 2024 Construction: Construction Phases Demolition phase removed as the project does not involve demolition. Construction: Trips and VMT Hauling trip length reduced to 8 miles/one-way trip as Cold Canyon Landfill is located 8 miles (driving distance) from the project site. Operations: Hearths No wood stoves would be included. Construction: Architectural Coatings Changes to interior made based on flat coating VOC content limits from SLOAPCD Rule 433