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Attachment 8 - Addendum Appendix A - Air Quality and Greenhouse Gas Emissions

Yountville City Council
January 13, 2026

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Attachment 8 - Addendum Appendix A - Air Quality and Greenhouse Gas Emissions
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January 13, 2026
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Yountville City Council
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Text extracted from the city's file for reading and search. Open the original on townofyountville.primegov.com. That file is the official record.

APPENDIX A

AIR QUALITY AND GREENHOUSE GAS

EMISSIONS
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Air Quality and Greenhouse Gas Appendix

Assumptions Worksheet

CalEEMod Inputs - Yountville Commons Project, Construction Name: Yountville Commons Project
Project Number: TYOU-03.0
Project Location: 6554 Yount St, Yountville, CA 94599
County: Napa
Land Use Setting: Rural
Operational Year: 2027
Gas Utility Company: PG&E
Electric Utility Company: PG&E Company
Air Basin: San Franscisco Bay Area Air Basin
Air District: Bay Area Air District
Proiect Site Acreage 7.7
Disturbed Acreage 7.2
Project Components
Demolition Square Feet Tons
School Admin Building 5,000 230
Asphalt Demolition 121,800 1,804
Total 126,800 2,034
New Construction Gross SQFT Footprint (SQFT) Acres Number of Units/Spaces Floors Proposed Buildings
Civic/Commercial Use 8,000 4,000 0.09 portion of three two-story buildings 2 Food/Commercial Use 1,500 1,500 0.03 Ground floor of three residential structures 1 Local Serving Businesses 1,500 750 0.02 portion of three two-story buildings 2 Multi-family Housing1 68,500 22,333 0.51 150 multi-family units 3 Surface Work 2
Potential Pool 5,500 NA 0.13
Driveways/Parking 55,000 NA 1.26 119 stalls
Pedestrian & Bike Pathways 88,000 NA 2.02
Open Space/Lawn/Planting Area 134,969 NA 3.10
TOTAL 362,969 7.16
Notes: 1 Residential building square footage and footprint reduced and accounts for retail/restaurant usage at the ground floor of three of the residential structures. 2 Surface work would account for off-site pedestrian improvements.

CalEEMod Land Use Inputs
Land Use Type Land Use Subtype1,2 Unit Amount Size Metric Lot Acreage Land Use Square Feet Landscape Square Feet Commercial Government (Civic Center) 8 1000 SQFT 0.09 8,000 - Recreational High Turnover (Sit Down Restaurant) 1.50 1000 SQFT 0.03 1,500 - Residential Apartments Mid-Rise 150 DU 3.61 68,500 134,969 Parking Other Non-Asphalt Surfaces 93.50 1000 SQFT 2.15 93,500 - Parking Other Asphalt Surfaces 55.00 1000 SQFT 1.26 55,000 - Commercial Strip Mall 1.50 1000 SQFT 0.02 1,500 -

7.16 362,969
Notes: 1
Government (Civic Center) land use accounts for proposed civic/commercial use. 2 Strip Mall land use accounts for proposed local serving businesses.

Demolition Hauling
Component Tons Demolished
Haul Truck Capacity
(Tons)1 Haul Distance (miles)1 Total Trip Ends Duration (days) Trip Ends/ day Building Demolition 230 8 20 58 44 2
Asphalt Demolition 1,804 8 20 452 44 12
Total 2,034 510 14
Notes: 1 CalEEMod defaults used.

Soil Haul
Construction Activities Import/Export Haul Volume (CY)1 Haul Truck Capacity
(CY)2 Haul Distance (miles)2 Total Trip Ends Duration (days) Trip Ends/ day Finishing and Landscaping (Import) 5,000 16 20 625 37 17 Total 5,000 625 17
Notes: 1 Estimated assumption for import of topsoil for landscaping over 3 acres. 2 CalEEMod defaults used.

Architectural Coating
Percent Painted
Interior Painted: 100%
Exterior Painted: 100%
Bay Area Air District (Air District) Regulation 8 Rule 3 Interior Paint VOC content: 50 grams per liter
Exterior Paing VOC content: 50 grams per liter
Land Use Land Use Square Feet CalEEMod Factor1 Total Paintable Surface Area Paintable Interior Area3 Paintable Exterior Area3 Proposed Buildings
Government (Civic Center) 8,000 2.0 16,000 12,000 4,000 High Turnover (Sit Down Restaurant) 1,500 2.0 3,000 2,250 750 Strip Mall 1,500 2.0 3,000 2,250 750
Total Nonresidential 22,000 16,500 5,500
Apartments Mid-Rise 68,500 2.7 184,950 138,713 46,238
Total Residential 184,950 138,713 46,238
Surface Work
Other Non-Asphalt Surfaces 93,500 6% 5,610 0 5,610
Other Asphalt Surfaces 55,000 6% 3,300 0 3,300
8,910 0 8,910
Notes:

Construction Measures
Bay Area Air District (Air District) Best Management Practices1 Water Exposed Area (BMP B-1) Frequency: 2 per day
PM10: 55 % Reduction
PM25: 55 % Reduction
Unpaved Roads (BMP B-4) Vehicle Speed: 15 mph
Sweep Paved Roads (BMP B-3) Clean Paved Road: 9 % PM Reduction Road Silt Loading Factor2 0.5 g/m2
Notes:
1 Applies three Basic BMPs in unmitigated modeling scenario per recommendations in the Air District's 2022 CEQA Guidelines. 2 Air District recommends modification of the silt loading factor to 0.5 g/m 2 for all roadways which corresponds to vehicle travel on roads with at least 5,000 vehicle per day under worst-case conditions.

Pacific Gas and Electric Carbon Intensity Factors1
1 The program assumes the total surface for painting equals 2.7 times the floor square footage for residential square footage and 2 times the floor square footage for nonresidential square footage defined by the user. Architectural coatings for the parking land uses are based on CalEEMod methodology that 6% of surface area is striped. 2 CalEEMod methodology calculates the paintable interior and exterior areas by multiplying the total paintable surface area by 75 and 25 percent, respectively, for residential uses.

Forecasted Year 2028
CO2: 203.98 pounds per megawatt hour
CH4: 0.033 pound per megawatt hour
N2O: 0.004 pound per megawatt hour
Notes:
1 CalEEMod defaults used.

Building Demolition Haul Trip Calculation
Conversion factors*

0.046 ton/SF Building Debris

2.0 CY/ton Building Debris

1.2641662 tons/cy Soil
20 tons Truck Capacity in tons
16 CY Truck Capacity in CY

0.791035229 CY/ton Soil
Asphalt Demolition Reprocessing
Building BSF Demo Tons/SF Tons
CY of Building
Materials Haul Truck (CY)
Haul Truck
(Ton) Round Trips
Total Trip
Ends
Building Demolition 5,000 0.046 230 460 16 20.00 30 60
*CalEEMod User's Guide Version 2022, Appendix C
Pavement Volume to Weight Conversion
Component Total SF of Area1
Assumed
Thickness (foot)2
Debris Volume
(cu. ft)
Weight of Crushed
Asphalt (lbs/cf)3
AC Mass
(lbs) AC Mass (tons) AC Mass (CY)
Asphalt Demolition 121,800 0.333 40,600 89 3,608,889 1804.44 3608.89 1 Based on impervious paving/asphalt/concrete in conceptual site plan. 2 Gibbons, Jim. 1999. Pavements and Surface Materials. Nonpoint Education for Municipal Officials, Technical Paper Number 8. University of Connecticut Cooperative Extension System. https://www.uni-groupusa.org/PDF/NEMO_tech_8.pdf 3 CalRecycle. 2019. Solid Waste Cleanup Program Weights and Volumes for Project Estimates. https://www.delmar.ca.us/DocumentCenter/View/5668/CalRecycle-ConversionTable Construction Activities and Schedule Assumptions
Construction Activities Phase Type Start Date End Date
CalEEMod
Duration
(Workday)
Demolition Demolition 4/1/2026 4/29/2026 21
Site Preparation Site Preparation 4/30/2026 5/14/2026 11 Grading Grading 5/15/2026 6/12/2026 21
Building Construction Building Construction 6/13/2026 5/1/2027 230 Paving Paving 4/3/2027 5/1/2027 20
Architectural Coating Architectural Coating 4/3/2027 5/1/2027 20 Total Days 395
Notes:
1 Conservatively assume building construction, paving, and architectural coating would overlap. 395 days of construction 4/1/2026 4/1/2028

1.08 years of construction 731 days

12.99 months of construction 24.03 months
Norm Factor: 1.85
Construction Activities Start Date End Date
CalEEMod Duration
(Workday)
Demolition1 4/1/2026 6/1/2026 44
Site Preparation 6/2/2026 6/29/2026 20
Grading 6/30/2026 8/21/2026 39
Building Construction 8/22/2026 4/1/2028 420
Paving 2/10/2028 4/1/2028 37
Architectural Coating 2/10/2028 4/1/2028 37
Finishing/Landscaping2 2/10/2028 4/1/2028 37
Notes:
1 Demolition would occur within first two months.
2 Assume same duration as paving phase.

Construction Activities Start Date End Date
CalEEMod Duration
(Workday)
Demolition 4/1/2026 6/1/2026 44
Site Preparation 6/2/2026 6/29/2026 20
Grading 6/30/2026 8/21/2026 39
Building Construction 8/22/2026 2/9/2028 383
Building Construction, Paving, Architectural Coating, and Finishing/Landscaping 2/10/2028 4/1/2028 37
Overlapping Construction Schedule
CalEEMod Default Construction Schedule
Normalization Calculations
CalEEMod Defaults Construction Duration Assumed Construction Duration New Construction Schedule (CalEEMod)
CalEEMod Construction Off-Road Equipment Inputs
Default Equipment # of Equipment hr/day
Required Construction Tier
per COA-AIR 12 total trips per day
Demolition
Rubber Tired Dozers 2 8 Tier 4 Interim
Excavators 3 8 Tier 4 Interim
Concrete/Industrial Saws 1 8 Tier 4 Interim
Worker Trips 15
Vendor Trips 2
Hauling Trips 14
Water Truck Trips (Added to Vendor Trips) Acres Disturbed: 1 6 Onsite Travel (mi/day): 0.83
Total Vendor Trips 8
Site Preparation
Rubber Tired Dozers 3 8 Tier 4 Interim
Tractors/Loaders/Backhoes 4 8 Tier 4 Interim
Worker Trips 18
Vendor Trips 1
Hauling Trips 0
Water Truck Trips (Added to Vendor Trips) Acres Disturbed: 3.5 18 Onsite Travel (mi/day): 2.89
Total Vendor Trips 19
Grading
Graders 1 8 Tier 4 Interim
Excavators 1 8 Average
Tractors/Loaders/Backhoes 3 8 Tier 4 Interim
Rubber Tired Dozers 1 8 Tier 4 Interim
Worker Trips 15
Vendor Trips 3
Hauling Trips 0
Water Truck Trips (Added to Vendor Trips) Acres Disturbed: 2.5 14 Onsite Travel (mi/day): 2.06
Total Vendor Trips 17
Building Construction
Forklifts 3 8 Tier 4 Interim
Generator Sets 1 8 Tier 4 Interim
Cranes 1 7 Tier 4 Interim
Welders 1 8 Tier 4 Interim
Tractors/Loaders/Backhoes 3 7 Tier 4 Interim
Worker Trips 112
Vendor Trips 18
Hauling Trips 0
Paving
Pavers 2 8 Tier 4 Interim
Paving Equipment 2 8 Tier 4 Interim
Rollers 2 8 Tier 4 Interim
Worker Trips 15
Vendor Trips 2
Hauling Trips 0
Architectural Coating
Air Compressors 1 6 Tier 4 Interim
Worker Trips 22
Vendor Trips 0
Hauling Trips 0
Finishing/Landscaping
Excavator 1 8 Tier 4 Interim
Worker Trips 3
Vendor Trips 0
Hauling Trips 17
Notes:
1 Based on equipment mix from similar development project. 2 Water Truck Vendor Trip Calculation
Amount of Water
(gal/acre/day)1
Water Truck Capacity
(gallons)2
10,000 4,000
Construction Equipment Details
Per COA-AIR 1, off-road diesel-powered construction equipment shall be rated by the U.S. Environmental Protection Agency (EPA) as Tier 4 Final or higher for equipment more than 25 horsepower. Modeling conservatively includes Tier 4 Interim engines.
1 Based on data provided in Guidance for Application for Dust Control Permit 2 Based on standard water truck capacity:
3 Assumes that dozers, tractors/loaders/backhoes, and graders can disturb 0.50 acres per day and scrapers can disturb 1 acre per day.

Maricopa County Air Quality Department. 2005, June. Guidance for Application of Dust Control Permit. https://www.epa.gov/sites/default/files/2019-04/documents/mr_guidanceforapplicationfordustcontrolpermit.pdf) McLellan Industries. 2025, January (access). Water Trucks. https://www.mclellanindustries.com/trucks/water-trucks/ CalEEMod Outputs

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Yountville Commons Project Custom 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

3. Construction Emissions Details

3.1. Demolition (2026) - Unmitigated

3.3. Site Preparation (2026) - Unmitigated

3.5. Grading (2026) - Unmitigated

3.7. Building Construction (2026) - Unmitigated

3.9. Building Construction (2027) - Unmitigated

3.11. Building Construction (2028) - Unmitigated

3.13. Paving (2028) - Unmitigated
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3.15. Architectural Coating (2028) - Unmitigated

3.17. Finishing/Landscaping (2028) - Unmitigated

5. Activity Data

5.1. Construction Schedule

5.2. Off-Road Equipment

5.2.1. Unmitigated

5.3. Construction Vehicles

5.3.1. Unmitigated

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies

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

8. User Changes to Default Data

8.1. Justifications
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1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Yountville Commons Project
Construction Start Date 4/1/2026
Operational Year 2028
Lead Agency —
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 3.6
Precipitation (days) 46
Location 38.40421931982726, -122.3614340349192
County Napa
City Yountville
Air District Bay Area AQMD
Air Basin San Francisco Bay Area
TAZ 818
EDFZ 2
Electric Utility Pacific Gas & Electric Company
Gas Utility Pacific Gas & Electric
App Version 2022.1.1.32

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
Government (Civic
Center)

8.0 1000sqft 0.09 8,000 0.00 0.00 — —
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High Turnover (Sit
Down Restaurant)

1.5 1000sqft 0.03 1,500 0.00 0.00 — —
Apartments Mid
Rise
150 Dwelling Unit 3.6 68,500 134,969 0.00 411 —
Other Non-Asphalt
Surfaces
94 1000sqft 2.1 0.00 0.00 0.00 — —
Other Asphalt
Surfaces
55 1000sqft 1.3 0.00 0.00 0.00 — —
Strip Mall 1.5 1000sqft 0.02 1,500 0.00 0.00 — —

1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction C-5 Use Advanced Engine Tiers

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. 17 17 30 31 0.05 1.2 9.8 11 1.2 4.3 5.5 — 7,076 7,076 0.26 0.34 7.6 7,192 Mit. 16 15 21 34 0.05 0.29 9.8 9.9 0.27 4.3 4.4 — 7,076 7,076 0.26 0.34 7.6 7,192 %
Reduced
9% 7% 29% -8% — 77% — 10% 76% — 19% — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 17 17 20 31 0.05 0.61 6.7 7.3 0.57 1.7 2.2 — 6,992 6,992 0.27 0.35 0.20 7,102 Mit. 16 15 22 33 0.05 0.29 6.7 7.0 0.27 1.7 1.9 — 6,992 6,992 0.27 0.35 0.20 7,102 Yountville Commons Project Custom Report, 11/12/2025
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%
Reduced
9% 7% -9% -8% — 53% — 4% 52% — 13% — — — — — — —
Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 1.9 1.8 8.8 12 0.02 0.34 2.9 3.2 0.31 0.74 1.1 — 2,671 2,671 0.10 0.09 1.4 2,702 Mit. 1.6 1.6 7.5 14 0.02 0.09 2.9 3.0 0.08 0.74 0.81 — 2,671 2,671 0.10 0.09 1.4 2,702 %
Reduced
12% 9% 15% -11% — 74% — 5% 73% — 23% — — — — — — —
Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.34 0.33 1.6 2.2 < 0.005 0.06 0.54 0.58 0.06 0.13 0.19 — 442 442 0.02 0.02 0.24 447 Mit. 0.30 0.30 1.4 2.5 < 0.005 0.02 0.54 0.55 0.02 0.13 0.15 — 442 442 0.02 0.02 0.24 447 %
Reduced
12% 9% 15% -11% — 74% — 5% 73% — 23% — — — — — — —

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 3.9 3.2 30 30 0.05 1.2 9.8 11 1.2 4.3 5.5 — 5,963 5,963 0.24 0.22 5.0 6,008 2027 1.7 1.5 10 18 0.03 0.34 4.3 4.6 0.32 1.1 1.4 — 3,795 3,795 0.13 0.12 4.6 3,840 2028 17 17 20 31 0.05 0.61 6.7 7.3 0.57 1.7 2.2 — 7,076 7,076 0.26 0.34 7.6 7,192 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2026 1.8 1.5 11 18 0.03 0.39 4.3 4.6 0.35 1.1 1.4 — 3,757 3,757 0.14 0.13 0.13 3,800 2027 1.7 1.4 10 17 0.03 0.34 4.3 4.6 0.32 1.1 1.4 — 3,732 3,732 0.14 0.13 0.12 3,773 2028 17 17 20 31 0.05 0.61 6.7 7.3 0.57 1.7 2.2 — 6,992 6,992 0.27 0.35 0.20 7,102 Yountville Commons Project Custom Report, 11/12/2025
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Average — — — — — — — — — — — — — — — — — —
Daily
2026 1.2 1.0 8.8 11 0.02 0.34 2.4 2.7 0.31 0.74 1.1 — 2,251 2,251 0.09 0.08 0.84 2,277 2027 1.2 1.0 7.4 12 0.02 0.25 2.9 3.2 0.23 0.73 0.95 — 2,671 2,671 0.10 0.09 1.4 2,702 2028 1.9 1.8 2.8 4.4 0.01 0.09 0.98 1.1 0.08 0.24 0.32 — 1,002 1,002 0.04 0.05 0.48 1,017 Annual — — — — — — — — — — — — — — — — — —
2026 0.23 0.19 1.6 1.9 < 0.005 0.06 0.43 0.49 0.06 0.13 0.19 — 373 373 0.01 0.01 0.14 377 2027 0.22 0.19 1.3 2.2 < 0.005 0.04 0.54 0.58 0.04 0.13 0.17 — 442 442 0.02 0.02 0.24 447 2028 0.34 0.33 0.51 0.81 < 0.005 0.02 0.18 0.20 0.01 0.04 0.06 — 166 166 0.01 0.01 0.08 168

3. Construction Emissions Details

3.1. Demolition (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

2.7 2.3 21 19 0.03 0.84 — 0.84 0.78 — 0.78 — 3,427 3,427 0.14 0.03 — 3,438 Demoliti
on
— — — — — — 0.66 0.66 — 0.10 0.10 — — — — — — —
Onsite
truck
< 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.31 0.31 < 0.005 0.03 0.03 — 4.4 4.4 < 0.005 < 0.005 0.01 4.7 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
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Off-Roa
Equipment

0.33 0.28 2.5 2.3 < 0.005 0.10 — 0.10 0.09 — 0.09 — 413 413 0.02 < 0.005 — 414 Demoliti
on
— — — — — — 0.08 0.08 — 0.01 0.01 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.03 0.03 < 0.005 < 0.005 < 0.005 — 0.54 0.54 < 0.005 < 0.005 < 0.005 0.56 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.06 0.05 0.45 0.42 < 0.005 0.02 — 0.02 0.02 — 0.02 — 68 68 < 0.005 < 0.005 — 69 Demoliti
on
— — — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.09 0.09 < 0.005 < 0.005 < 0.005 0.09 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.06 0.04 0.65 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 128 128 < 0.005 < 0.005 0.51 130 Vendor 0.02 0.01 0.29 0.11 < 0.005 < 0.005 0.20 0.21 < 0.005 0.05 0.06 — 212 212 0.01 0.03 0.54 223 Hauling 0.07 0.02 1.3 0.43 0.01 0.01 0.87 0.88 0.01 0.23 0.24 — 995 995 0.04 0.16 2.1 1,045 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.07 0.00 0.00 0.06 0.06 0.00 0.01 0.01 — 14 14 < 0.005 < 0.005 0.03 15 Vendor < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 26 26 < 0.005 < 0.005 0.03 27 Hauling 0.01 < 0.005 0.16 0.05 < 0.005 < 0.005 0.10 0.10 < 0.005 0.03 0.03 — 120 120 0.01 0.02 0.11 126 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 2.4 2.4 < 0.005 < 0.005 < 0.005 2.4 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.2 4.2 < 0.005 < 0.005 < 0.005 4.4 Yountville Commons Project Custom Report, 11/12/2025
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Hauling < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 20 20 < 0.005 < 0.005 0.02 21

3.3. 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 Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

3.7 3.1 29 29 0.05 1.2 — 1.2 1.1 — 1.1 — 5,298 5,298 0.21 0.04 — 5,316 Dust
From
Material
Movement
— — — — — — 7.7 7.7 — 3.9 3.9 — — — — — — —
Onsite
truck
< 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 1.1 1.1 < 0.005 0.11 0.11 — 12 12 < 0.005 < 0.005 0.02 12 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.21 0.17 1.6 1.6 < 0.005 0.07 — 0.07 0.06 — 0.06 — 290 290 0.01 < 0.005 — 291 Dust
From
Material
Movement
— — — — — — 0.42 0.42 — 0.22 0.22 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 0.64 0.64 < 0.005 < 0.005 < 0.005 0.67 Annual — — — — — — — — — — — — — — — — — —
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Off-Roa
Equipment

0.04 0.03 0.29 0.29 < 0.005 0.01 — 0.01 0.01 — 0.01 — 48 48 < 0.005 < 0.005 — 48 Dust
From
Material
Movement
— — — — — — 0.08 0.08 — 0.04 0.04 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.11 0.11 < 0.005 < 0.005 < 0.005 0.11 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.07 0.05 0.75 0.00 0.00 0.60 0.60 0.00 0.15 0.15 — 149 149 < 0.005 0.01 0.59 151 Vendor 0.04 0.02 0.68 0.27 < 0.005 0.01 0.49 0.49 0.01 0.12 0.13 — 504 504 0.02 0.08 1.3 529 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)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 7.7 7.7 < 0.005 < 0.005 0.01 7.8 Vendor < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 — 28 28 < 0.005 < 0.005 0.03 29 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 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 1.3 1.3 < 0.005 < 0.005 < 0.005 1.3 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.6 4.6 < 0.005 < 0.005 0.01 4.8 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

3.5. 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 — — — — — — — — — — — — — — — — — —
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Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

2.0 1.6 15 17 0.03 0.65 — 0.65 0.59 — 0.59 — 2,960 2,960 0.12 0.02 — 2,970 Dust
From
Material
Movement
— — — — — — 2.8 2.8 — 1.3 1.3 — — — — — — —
Onsite
truck
< 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.76 0.76 < 0.005 0.08 0.08 — 8.7 8.7 < 0.005 < 0.005 0.02 9.2 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.21 0.18 1.6 1.9 < 0.005 0.07 — 0.07 0.06 — 0.06 — 316 316 0.01 < 0.005 — 317 Dust
From
Material
Movement
— — — — — — 0.30 0.30 — 0.14 0.14 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.07 0.07 < 0.005 0.01 0.01 — 0.93 0.93 < 0.005 < 0.005 < 0.005 0.98 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.04 0.03 0.29 0.34 < 0.005 0.01 — 0.01 0.01 — 0.01 — 52 52 < 0.005 < 0.005 — 53 Dust
From
Material
Movement
— — — — — — 0.05 0.05 — 0.03 0.03 — — — — — — —
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Onsite < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.15 0.15 < 0.005 < 0.005 < 0.005 0.16 truck
Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.06 0.04 0.65 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 128 128 < 0.005 < 0.005 0.51 130 Vendor 0.04 0.02 0.61 0.24 < 0.005 0.01 0.43 0.44 0.01 0.11 0.12 — 451 451 0.02 0.07 1.2 473 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)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 < 0.005 0.06 0.00 0.00 0.05 0.05 0.00 0.01 0.01 — 13 13 < 0.005 < 0.005 0.02 13 Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 48 48 < 0.005 0.01 0.05 50 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 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 2.1 2.1 < 0.005 < 0.005 < 0.005 2.2 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 8.0 8.0 < 0.005 < 0.005 0.01 8.4 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. 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)
— — — — — — — — — — — — — — — — — —
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Off-Roa 1.3 1.1 9.9 13 0.02 0.38 — 0.38 0.35 — 0.35 — 2,397 2,397 0.10 0.02 — 2,405 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.3 1.1 9.9 13 0.02 0.38 — 0.38 0.35 — 0.35 — 2,397 2,397 0.10 0.02 — 2,405 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

0.33 0.28 2.5 3.3 0.01 0.10 — 0.10 0.09 — 0.09 — 619 619 0.03 0.01 — 621 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

0.06 0.05 0.46 0.61 < 0.005 0.02 — 0.02 0.02 — 0.02 — 103 103 < 0.005 < 0.005 — 103 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 0.48 0.44 0.31 4.8 0.00 0.00 3.8 3.8 0.00 0.94 0.94 — 951 951 0.02 0.04 3.8 966 Vendor 0.04 0.02 0.64 0.25 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 473 473 0.02 0.07 1.2 496 Yountville Commons Project Custom Report, 11/12/2025
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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 0.46 0.42 0.38 4.4 0.00 0.00 3.8 3.8 0.00 0.94 0.94 — 886 886 0.03 0.04 0.10 899 Vendor 0.04 0.02 0.68 0.26 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 473 473 0.02 0.07 0.03 496 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 0.12 0.11 0.09 1.1 0.00 0.00 0.95 0.95 0.00 0.23 0.23 — 231 231 0.01 0.01 0.42 235 Vendor 0.01 < 0.005 0.17 0.07 < 0.005 < 0.005 0.11 0.12 < 0.005 0.03 0.03 — 122 122 < 0.005 0.02 0.14 128 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 0.02 0.02 0.02 0.20 0.00 0.00 0.17 0.17 0.00 0.04 0.04 — 38 38 < 0.005 < 0.005 0.07 39 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 20 20 < 0.005 < 0.005 0.02 21 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. Building Construction (2027) - 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

1.2 1.0 9.4 13 0.02 0.34 — 0.34 0.31 — 0.31 — 2,397 2,397 0.10 0.02 — 2,405 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 Yountville Commons Project Custom Report, 11/12/2025
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Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Off-Roa
d
Equipm
ent

1.2 1.0 9.4 13 0.02 0.34 — 0.34 0.31 — 0.31 — 2,397 2,397 0.10 0.02 — 2,405 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

0.88 0.74 6.7 9.2 0.02 0.24 — 0.24 0.22 — 0.22 — 1,712 1,712 0.07 0.01 — 1,718 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

0.16 0.13 1.2 1.7 < 0.005 0.04 — 0.04 0.04 — 0.04 — 283 283 0.01 < 0.005 — 284 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 0.43 0.42 0.28 4.5 0.00 0.00 3.8 3.8 0.00 0.94 0.94 — 934 934 0.02 0.04 3.5 948 Vendor 0.03 0.01 0.61 0.24 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 464 464 0.02 0.07 1.1 486 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 0.42 0.40 0.35 4.1 0.00 0.00 3.8 3.8 0.00 0.94 0.94 — 870 870 0.03 0.04 0.09 883 Yountville Commons Project Custom Report, 11/12/2025
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Vendor 0.03 0.01 0.65 0.25 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 464 464 0.02 0.07 0.03 485 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 0.29 0.28 0.22 2.8 0.00 0.00 2.6 2.6 0.00 0.65 0.65 — 628 628 0.02 0.03 1.1 637 Vendor 0.02 0.01 0.45 0.18 < 0.005 < 0.005 0.32 0.32 < 0.005 0.08 0.09 — 331 331 0.01 0.05 0.35 347 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 0.05 0.05 0.04 0.51 0.00 0.00 0.48 0.48 0.00 0.12 0.12 — 104 104 < 0.005 < 0.005 0.18 106 Vendor < 0.005 < 0.005 0.08 0.03 < 0.005 < 0.005 0.06 0.06 < 0.005 0.01 0.02 — 55 55 < 0.005 0.01 0.06 57 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

3.11. Building Construction (2028) - 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

1.2 0.99 8.9 13 0.02 0.30 — 0.30 0.28 — 0.28 — 2,397 2,397 0.10 0.02 — 2,406 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

1.2 0.99 8.9 13 0.02 0.30 — 0.30 0.28 — 0.28 — 2,397 2,397 0.10 0.02 — 2,406 Yountville Commons Project Custom Report, 11/12/2025
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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

0.21 0.18 1.6 2.3 < 0.005 0.05 — 0.05 0.05 — 0.05 — 432 432 0.02 < 0.005 — 433 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

0.04 0.03 0.29 0.43 < 0.005 0.01 — 0.01 0.01 — 0.01 — 71 71 < 0.005 < 0.005 — 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)
— — — — — — — — — — — — — — — — — —
Worker 0.42 0.38 0.24 4.2 0.00 0.00 3.8 3.8 0.00 0.94 0.94 — 917 917 0.02 0.04 3.2 931 Vendor 0.03 0.01 0.58 0.23 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 453 453 0.02 0.07 1.0 475 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 0.40 0.36 0.32 3.8 0.00 0.00 3.8 3.8 0.00 0.94 0.94 — 855 855 0.02 0.04 0.08 867 Vendor 0.03 0.01 0.61 0.24 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 453 453 0.02 0.07 0.03 474 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 0.07 0.06 0.05 0.66 0.00 0.00 0.66 0.66 0.00 0.16 0.16 — 155 155 < 0.005 0.01 0.25 158 Vendor 0.01 < 0.005 0.11 0.04 < 0.005 < 0.005 0.08 0.08 < 0.005 0.02 0.02 — 82 82 < 0.005 0.01 0.08 85 Yountville Commons Project Custom Report, 11/12/2025
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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 0.12 0.00 0.00 0.12 0.12 0.00 0.03 0.03 — 26 26 < 0.005 < 0.005 0.04 26 Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 14 14 < 0.005 < 0.005 0.01 14 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

3.13. Paving (2028) - 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

0.82 0.69 6.6 9.9 0.01 0.26 — 0.26 0.24 — 0.24 — 1,511 1,511 0.06 0.01 — 1,516 Paving 0.09 0.09 — — — — — — — — — — — — — — — —
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

0.82 0.69 6.6 9.9 0.01 0.26 — 0.26 0.24 — 0.24 — 1,511 1,511 0.06 0.01 — 1,516 Paving 0.09 0.09 — — — — — — — — — — — — — — — —
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
— — — — — — — — — — — — — — — — — —
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Off-Roa 0.08 0.07 0.67 1.0 < 0.005 0.03 — 0.03 0.02 — 0.02 — 153 153 0.01 < 0.005 — 154 d
Paving 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

0.02 0.01 0.12 0.18 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 25 25 < 0.005 < 0.005 — 25 Paving < 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)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.05 0.03 0.56 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 123 123 < 0.005 < 0.005 0.43 125 Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 51 51 < 0.005 0.01 0.12 53 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 0.05 0.05 0.04 0.51 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 115 115 < 0.005 0.01 0.01 116 Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 51 51 < 0.005 0.01 < 0.005 53 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 0.01 < 0.005 < 0.005 0.05 0.00 0.00 0.05 0.05 0.00 0.01 0.01 — 12 12 < 0.005 < 0.005 0.02 12 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 5.1 5.1 < 0.005 < 0.005 0.01 5.4 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 — — — — — — — — — — — — — — — — — —
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Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 1.9 1.9 < 0.005 < 0.005 < 0.005 2.0 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.85 0.85 < 0.005 < 0.005 < 0.005 0.89 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

3.15. Architectural Coating (2028) - 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

0.13 0.11 0.81 1.1 < 0.005 0.02 — 0.02 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s
14 14 — — — — — — — — — — — — — — — —
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

0.13 0.11 0.81 1.1 < 0.005 0.02 — 0.02 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s
14 14 — — — — — — — — — — — — — — — —
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 Yountville Commons Project Custom Report, 11/12/2025
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Average — — — — — — — — — — — — — — — — — —
Daily
Off-Roa
d
Equipm
ent

0.01 0.01 0.08 0.11 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 14 14 < 0.005 < 0.005 — 14 Architect
ural
Coating
s

1.4 1.4 — — — — — — — — — — — — — — — —
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 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.2 2.2 < 0.005 < 0.005 — 2.2 Architect
ural
Coating
s

0.26 0.26 — — — — — — — — — — — — — — — —
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 0.08 0.08 0.05 0.84 0.00 0.00 0.76 0.76 0.00 0.19 0.19 — 183 183 < 0.005 0.01 0.64 186 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.08 0.07 0.06 0.76 0.00 0.00 0.76 0.76 0.00 0.19 0.19 — 171 171 < 0.005 0.01 0.02 173 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 Yountville Commons Project Custom Report, 11/12/2025
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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 0.01 0.01 0.01 0.07 0.00 0.00 0.07 0.07 0.00 0.02 0.02 — 17 17 < 0.005 < 0.005 0.03 18 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 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 2.9 2.9 < 0.005 < 0.005 < 0.005 2.9 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

3.17. Finishing/Landscaping (2028) - 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

0.11 0.09 0.81 1.0 < 0.005 0.02 — 0.02 0.02 — 0.02 — 142 142 0.01 < 0.005 — 142 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
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Off-Roa 0.11 0.09 0.81 1.0 < 0.005 0.02 — 0.02 0.02 — 0.02 — 142 142 0.01 < 0.005 — 142 d
Equipm
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 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.01 0.01 0.08 0.10 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 14 14 < 0.005 < 0.005 — 14 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 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.01 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.4 2.4 < 0.005 < 0.005 — 2.4 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)
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 21 21 < 0.005 < 0.005 0.07 21 Yountville Commons Project Custom Report, 11/12/2025
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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 0.07 0.03 1.4 0.50 0.01 0.01 1.1 1.1 0.01 0.27 0.29 — 1,144 1,144 0.05 0.18 2.1 1,202 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 19 19 < 0.005 < 0.005 < 0.005 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 0.07 0.02 1.5 0.51 0.01 0.01 1.1 1.1 0.01 0.27 0.29 — 1,144 1,144 0.05 0.18 0.05 1,200 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 2.0 2.0 < 0.005 < 0.005 < 0.005 2.0 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 0.01 < 0.005 0.15 0.05 < 0.005 < 0.005 0.10 0.10 < 0.005 0.03 0.03 — 116 116 0.01 0.02 0.09 122 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 0.32 0.32 < 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 < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 19 19 < 0.005 < 0.005 0.02 20

5. Activity Data

5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Demolition Demolition 4/1/2026 6/1/2026 5.0 44 —
Site Preparation Site Preparation 6/2/2026 6/29/2026 5.0 20 — Grading Grading 6/30/2026 8/21/2026 5.0 39 —
Building Construction Building Construction 8/22/2026 4/1/2028 5.0 420 — Paving Paving 2/10/2028 4/1/2028 5.0 37 —
Architectural Coating Architectural Coating 2/10/2028 4/1/2028 5.0 37 — Finishing/Landscaping Trenching 2/10/2028 4/1/2028 5.0 37 — Yountville Commons Project Custom Report, 11/12/2025
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5.2. Off-Road Equipment

5.2.1. Unmitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Demolition Rubber Tired Dozers Diesel Average 2.0 8.0 367 0.40 Demolition Excavators Diesel Average 3.0 8.0 36 0.38
Demolition Concrete/Industrial
Saws
Diesel Average 1.00 8.0 33 0.73
Site Preparation Rubber Tired Dozers Diesel Average 3.0 8.0 367 0.40 Site Preparation Tractors/Loaders/Back
hoes
Diesel Average 4.0 8.0 84 0.37
Grading Graders Diesel Average 1.00 8.0 148 0.41
Grading Excavators Diesel Average 1.00 8.0 36 0.38
Grading Tractors/Loaders/Back
hoes
Diesel Average 3.0 8.0 84 0.37
Grading Rubber Tired Dozers Diesel Average 1.00 8.0 367 0.40 Building Construction Forklifts Diesel Average 3.0 8.0 82 0.20 Building Construction Generator Sets Diesel Average 1.00 8.0 14 0.74 Building Construction Cranes Diesel Average 1.00 7.0 367 0.29 Building Construction Welders Diesel Average 1.00 8.0 46 0.45 Building Construction Tractors/Loaders/Back
hoes
Diesel Average 3.0 7.0 84 0.37
Paving Pavers Diesel Average 2.0 8.0 81 0.42
Paving Paving Equipment Diesel Average 2.0 8.0 89 0.36
Paving Rollers Diesel Average 2.0 8.0 36 0.38
Architectural Coating Air Compressors Diesel Average 1.00 6.0 37 0.48 Finishing/Landscaping Excavators Diesel Average 1.00 8.0 36 0.38

5.3. Construction Vehicles
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5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Demolition Worker 15 12 LDA,LDT1,LDT2
Demolition Vendor 8.0 8.4 HHDT,MHDT
Demolition Hauling 14 20 HHDT
Demolition Onsite truck 1.00 0.83 HHDT
Site Preparation Worker 18 12 LDA,LDT1,LDT2
Site Preparation Vendor 19 8.4 HHDT,MHDT
Site Preparation Hauling 0.00 20 HHDT
Site Preparation Onsite truck 1.00 2.9 HHDT
Grading Worker 15 12 LDA,LDT1,LDT2
Grading Vendor 17 8.4 HHDT,MHDT
Grading Hauling 0.00 20 HHDT
Grading Onsite truck 1.00 2.1 HHDT
Building Construction Worker 112 12 LDA,LDT1,LDT2
Building Construction Vendor 18 8.4 HHDT,MHDT
Building Construction Hauling 0.00 20 HHDT
Building Construction Onsite truck 0.00 0.00 HHDT
Paving Worker 15 12 LDA,LDT1,LDT2
Paving Vendor 2.0 8.4 HHDT,MHDT
Paving Hauling 0.00 20 HHDT
Paving Onsite truck 0.00 0.00 HHDT
Architectural Coating Worker 22 12 LDA,LDT1,LDT2
Architectural Coating Vendor 0.00 8.4 HHDT,MHDT
Architectural Coating Hauling 0.00 20 HHDT
Architectural Coating Onsite truck 0.00 0.00 HHDT
Finishing/Landscaping Worker 2.5 12 LDA,LDT1,LDT2
Finishing/Landscaping Vendor 0.00 8.4 HHDT,MHDT
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Finishing/Landscaping Hauling 17 20 HHDT
Finishing/Landscaping Onsite truck 0.00 0.00 HHDT

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied PM10 Reduction PM2.5 Reduction Water unpaved roads twice daily 55% 55%
Limit vehicle speeds on unpaved roads to 25 mph 44% 44% Sweep paved roads once per month 9% 9%

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 138,713 46,238 16,500 5,500 8,910

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 (Ton of
Debris)
Acres Paved (acres)
Demolition 0.00 0.00 0.00 2,034 0.00
Site Preparation 0.00 0.00 30 0.00 0.00
Grading 0.00 0.00 39 0.00 0.00
Paving 0.00 0.00 0.00 0.00 3.4
Finishing/Landscaping 5,000 0.00 3.0 0.00 0.00

5.6.2. Construction Earthmoving Control Strategies
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Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%
Water Demolished Area 2 36% 36%

5.7. Construction Paving
Phase Name Land Use Area Paved (acres) % Asphalt
Paving Government (Civic Center) 0.00 0%
Paving High Turnover (Sit Down Restaurant) 0.00 0%
Paving Apartments Mid Rise — 0%
Paving Other Non-Asphalt Surfaces 2.1 0%
Paving Other Asphalt Surfaces 1.3 100%
Paving Strip Mall 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
2027 0.00 204 0.03 < 0.005
2028 0.00 204 0.03 < 0.005

8. User Changes to Default Data

8.1. Justifications
Screen Justification
Land Use Based on PD and preliminary conceptual site plan Construction: Construction Phases Conservatively assume building construction, paving, architectural coating, and finishing/landscaping would overlap.

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Construction: Off-Road Equipment Equipment for finishing/landscaping phase based on similar development project, see assumptions file.

Construction: Dust From Material Movement Assumption for import of topsoil for landscaping over 3 acres Construction: Trips and VMT Included water trucks to vendor trips and calculated onsite truck trip length, see assumptions file
Construction: On-Road Fugitive Dust Air District recommends modification of the silt loading factor to 0.5 g/m2 for all roadways which corresponds to vehicle travel on roads with at least 5,000 vehicle per day under worst-case conditions.

Construction: Architectural Coatings Bay Area Air District (Air District) Regulation 8 Rule 3 Operations: Vehicle Data For Government (Civic Center) use, assume same weekday trip gen for Saturday and Sunday week trips.

Operations: Fleet Mix Fleet mix for the project is modified to reflect a higher proportion of passenger vehicles that the regional VMT. Assumes a mix of approximately 97% passenger vehicles, 2% medium duty trucks, and 1% heavy duty trucks and buses.

Operations: Road Dust Air District recommends modification of the silt loading factor to 0.5 g/m2 for all roadways which corresponds to vehicle travel on roads with at least 5,000 vehicle per day under worst-case conditions.

Operations: Hearths Assume each home will have an electric fireplace and compliance with Air District Rule 6-3-306.

Operations: Architectural Coatings Bay Area Air District (Air District) Regulation 8 Rule 3 Operations: Energy Use The proposed project would be all-electric therefore the natural gas usage was omitted in CalEEMod.

Operations: Water and Waste Water Assume 100% aerobic treatment CalEEMod Outputs with COA AIR-1
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Yountville Commons Project Custom 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

2.3. Construction Emissions by Year, Mitigated

3. Construction Emissions Details

3.2. Demolition (2026) - Mitigated

3.4. Site Preparation (2026) - Mitigated

3.6. Grading (2026) - Mitigated

3.8. Building Construction (2026) - Mitigated

3.10. Building Construction (2027) - Mitigated

3.12. Building Construction (2028) - Mitigated

3.14. Paving (2028) - Mitigated
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3.16. Architectural Coating (2028) - Mitigated

3.18. Finishing/Landscaping (2028) - Mitigated

5. Activity Data

5.1. Construction Schedule

5.2. Off-Road Equipment

5.2.2. Mitigated

5.3. Construction Vehicles

5.3.2. Mitigated

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies

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

8. User Changes to Default Data
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1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Yountville Commons Project
Construction Start Date 4/1/2026
Operational Year 2028
Lead Agency —
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 3.60
Precipitation (days) 46.2
Location 38.40421931982726, -122.3614340349192
County Napa
City Yountville
Air District Bay Area AQMD
Air Basin San Francisco Bay Area
TAZ 818
EDFZ 2
Electric Utility Pacific Gas & Electric Company
Gas Utility Pacific Gas & Electric
App Version 2022.1.1.30

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
Government (Civic
Center)

8.00 1000sqft 0.09 8,000 0.00 0.00 — —
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High Turnover (Sit
Down Restaurant)

1.50 1000sqft 0.03 1,500 0.00 0.00 — —
Apartments Mid
Rise
150 Dwelling Unit 3.61 68,500 134,969 0.00 411 —
Other Non-Asphalt
Surfaces

93.5 1000sqft 2.15 0.00 0.00 0.00 — —
Other Asphalt
Surfaces

55.0 1000sqft 1.26 0.00 0.00 0.00 — —
Strip Mall 1.50 1000sqft 0.02 1,500 0.00 0.00 — —

1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction C-5 Use Advanced Engine Tiers

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. — — — — — — — — — — — — — — — — — —
Mit. 15.6 15.4 21.3 33.8 0.05 0.29 9.82 9.93 0.27 4.32 4.43 — 7,076 7,076 0.26 0.34 7.57 7,192 %
Reduced
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. — — — — — — — — — — — — — — — — — —
Mit. 15.5 15.4 21.5 33.3 0.05 0.29 6.72 7.01 0.27 1.67 1.95 — 6,992 6,992 0.27 0.35 0.20 7,102 Yountville Commons Project Custom Report, 8/22/2025
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%
Reduced
— — — — — — — — — — — — — — — — — —
Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. — — — — — — — — — — — — — — — — — —
Mit. 1.64 1.62 7.48 13.6 0.02 0.09 2.95 3.04 0.08 0.74 0.81 — 2,671 2,671 0.10 0.09 1.42 2,702 %
Reduced
— — — — — — — — — — — — — — — — — —
Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. — — — — — — — — — — — — — — — — — —
Mit. 0.30 0.30 1.37 2.48 < 0.005 0.02 0.54 0.55 0.02 0.13 0.15 — 442 442 0.02 0.02 0.24 447 %
Reduced
— — — — — — — — — — — — — — — — — —

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 Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — — —
2026 0.95 0.87 15.5 29.3 0.05 0.22 9.82 9.93 0.20 4.32 4.43 — 5,963 5,963 0.24 0.22 5.01 6,008 2027 0.89 0.85 10.4 19.5 0.03 0.12 4.26 4.38 0.12 1.05 1.17 — 3,795 3,795 0.13 0.12 4.61 3,840 2028 15.6 15.4 21.3 33.8 0.05 0.29 6.72 7.01 0.27 1.67 1.95 — 7,076 7,076 0.26 0.34 7.57 7,192 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2026 0.93 0.85 10.6 19.4 0.03 0.13 4.26 4.38 0.12 1.05 1.17 — 3,757 3,757 0.14 0.13 0.13 3,800 2027 0.88 0.83 10.5 19.1 0.03 0.12 4.26 4.38 0.12 1.05 1.17 — 3,732 3,732 0.14 0.13 0.12 3,773 2028 15.5 15.4 21.5 33.3 0.05 0.29 6.72 7.01 0.27 1.67 1.95 — 6,992 6,992 0.27 0.35 0.20 7,102 Yountville Commons Project Custom Report, 8/22/2025
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Average — — — — — — — — — — — — — — — — — —
Daily
2026 0.40 0.37 6.39 10.9 0.02 0.07 2.36 2.43 0.07 0.74 0.81 — 2,251 2,251 0.09 0.08 0.84 2,277 2027 0.63 0.59 7.48 13.6 0.02 0.09 2.95 3.04 0.08 0.73 0.81 — 2,671 2,671 0.10 0.09 1.42 2,702 2028 1.64 1.62 2.99 4.83 0.01 0.04 0.98 1.02 0.04 0.24 0.28 — 1,002 1,002 0.04 0.05 0.48 1,017 Annual — — — — — — — — — — — — — — — — — —
2026 0.07 0.07 1.17 1.99 < 0.005 0.01 0.43 0.44 0.01 0.13 0.15 — 373 373 0.01 0.01 0.14 377 2027 0.11 0.11 1.37 2.48 < 0.005 0.02 0.54 0.55 0.02 0.13 0.15 — 442 442 0.02 0.02 0.24 447 2028 0.30 0.30 0.55 0.88 < 0.005 0.01 0.18 0.19 0.01 0.04 0.05 — 166 166 0.01 0.01 0.08 168

3. Construction Emissions Details

3.2. Demolition (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

0.41 0.41 11.9 18.2 0.03 0.20 — 0.20 0.19 — 0.19 — 3,427 3,427 0.14 0.03 — 3,438 Demoliti
on
— — — — — — 0.66 0.66 — 0.10 0.10 — — — — — — —
Onsite
truck
< 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.31 0.31 < 0.005 0.03 0.03 — 4.43 4.43 < 0.005 < 0.005 0.01 4.66 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
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Off-Roa
Equipment

0.05 0.05 1.44 2.19 < 0.005 0.02 — 0.02 0.02 — 0.02 — 413 413 0.02 < 0.005 — 414 Demoliti
on
— — — — — — 0.08 0.08 — 0.01 0.01 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.03 0.03 < 0.005 < 0.005 < 0.005 — 0.54 0.54 < 0.005 < 0.005 < 0.005 0.56 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.01 0.01 0.26 0.40 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 68.4 68.4 < 0.005 < 0.005 — 68.6 Demoliti
on
— — — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.09 0.09 < 0.005 < 0.005 < 0.005 0.09 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.06 0.04 0.65 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 128 128 < 0.005 < 0.005 0.51 130 Vendor 0.02 0.01 0.29 0.11 < 0.005 < 0.005 0.20 0.21 < 0.005 0.05 0.06 — 212 212 0.01 0.03 0.54 223 Hauling 0.07 0.02 1.29 0.43 0.01 0.01 0.87 0.88 0.01 0.23 0.24 — 995 995 0.04 0.16 2.06 1,045 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.07 0.00 0.00 0.06 0.06 0.00 0.01 0.01 — 14.5 14.5 < 0.005 < 0.005 0.03 14.7 Vendor < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 25.6 25.6 < 0.005 < 0.005 0.03 26.8 Hauling 0.01 < 0.005 0.16 0.05 < 0.005 < 0.005 0.10 0.10 < 0.005 0.03 0.03 — 120 120 0.01 0.02 0.11 126 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 2.40 2.40 < 0.005 < 0.005 < 0.005 2.44 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.24 4.24 < 0.005 < 0.005 < 0.005 4.44 Yountville Commons Project Custom Report, 8/22/2025
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Hauling < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 19.9 19.9 < 0.005 < 0.005 0.02 20.8

3.4. 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)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.64 0.64 14.7 28.3 0.05 0.10 — 0.10 0.10 — 0.10 — 5,298 5,298 0.21 0.04 — 5,316 Dust
From
Material
Movement
— — — — — — 7.67 7.67 — 3.94 3.94 — — — — — — —
Onsite
truck
< 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 1.07 1.07 < 0.005 0.11 0.11 — 11.6 11.6 < 0.005 < 0.005 0.02 12.2 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.04 0.04 0.81 1.55 < 0.005 0.01 — 0.01 0.01 — 0.01 — 290 290 0.01 < 0.005 — 291 Dust
From
Material
Movement
— — — — — — 0.42 0.42 — 0.22 0.22 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 0.64 0.64 < 0.005 < 0.005 < 0.005 0.67 Annual — — — — — — — — — — — — — — — — — —
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Off-Roa
Equipment

0.01 0.01 0.15 0.28 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 48.1 48.1 < 0.005 < 0.005 — 48.2 Dust
From
Material
Movement
— — — — — — 0.08 0.08 — 0.04 0.04 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.11 0.11 < 0.005 < 0.005 < 0.005 0.11 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.07 0.05 0.75 0.00 0.00 0.60 0.60 0.00 0.15 0.15 — 149 149 < 0.005 0.01 0.59 151 Vendor 0.04 0.02 0.68 0.27 < 0.005 0.01 0.49 0.49 0.01 0.12 0.13 — 504 504 0.02 0.08 1.29 529 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)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 7.68 7.68 < 0.005 < 0.005 0.01 7.80 Vendor < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 — 27.6 27.6 < 0.005 < 0.005 0.03 28.9 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 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 1.27 1.27 < 0.005 < 0.005 < 0.005 1.29 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.57 4.57 < 0.005 < 0.005 0.01 4.79 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. 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 — — — — — — — — — — — — — — — — — —
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Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.39 0.39 10.3 17.8 0.03 0.08 — 0.08 0.08 — 0.08 — 2,960 2,960 0.12 0.02 — 2,970 Dust
From
Material
Movement
— — — — — — 2.76 2.76 — 1.34 1.34 — — — — — — —
Onsite
truck
< 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.76 0.76 < 0.005 0.08 0.08 — 8.71 8.71 < 0.005 < 0.005 0.02 9.15 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.04 0.04 1.10 1.90 < 0.005 0.01 — 0.01 0.01 — 0.01 — 316 316 0.01 < 0.005 — 317 Dust
From
Material
Movement
— — — — — — 0.30 0.30 — 0.14 0.14 — — — — — — —
Onsite
truck
< 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.07 0.07 < 0.005 0.01 0.01 — 0.93 0.93 < 0.005 < 0.005 < 0.005 0.98 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.01 0.01 0.20 0.35 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 52.4 52.4 < 0.005 < 0.005 — 52.5 Dust
From
Material
Movement
— — — — — — 0.05 0.05 — 0.03 0.03 — — — — — — —
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Onsite < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 0.15 0.15 < 0.005 < 0.005 < 0.005 0.16 truck
Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.06 0.04 0.65 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 128 128 < 0.005 < 0.005 0.51 130 Vendor 0.04 0.02 0.61 0.24 < 0.005 0.01 0.43 0.44 0.01 0.11 0.12 — 451 451 0.02 0.07 1.16 473 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)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 < 0.005 0.06 0.00 0.00 0.05 0.05 0.00 0.01 0.01 — 12.8 12.8 < 0.005 < 0.005 0.02 13.0 Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 48.2 48.2 < 0.005 0.01 0.05 50.5 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 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 2.13 2.13 < 0.005 < 0.005 < 0.005 2.16 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 7.98 7.98 < 0.005 < 0.005 0.01 8.36 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. 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)
— — — — — — — — — — — — — — — — — —
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Off-Roa 0.44 0.41 9.53 14.8 0.02 0.12 — 0.12 0.11 — 0.11 — 2,397 2,397 0.10 0.02 — 2,405 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.44 0.41 9.53 14.8 0.02 0.12 — 0.12 0.11 — 0.11 — 2,397 2,397 0.10 0.02 — 2,405 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

0.11 0.11 2.46 3.83 0.01 0.03 — 0.03 0.03 — 0.03 — 619 619 0.03 0.01 — 621 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

0.02 0.02 0.45 0.70 < 0.005 0.01 — 0.01 0.01 — 0.01 — 103 103 < 0.005 < 0.005 — 103 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 0.48 0.44 0.31 4.82 0.00 0.00 3.80 3.80 0.00 0.94 0.94 — 951 951 0.02 0.04 3.79 966 Vendor 0.04 0.02 0.64 0.25 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 473 473 0.02 0.07 1.21 496 Yountville Commons Project Custom Report, 8/22/2025
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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 0.46 0.42 0.38 4.36 0.00 0.00 3.80 3.80 0.00 0.94 0.94 — 886 886 0.03 0.04 0.10 899 Vendor 0.04 0.02 0.68 0.26 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 473 473 0.02 0.07 0.03 496 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 0.12 0.11 0.09 1.08 0.00 0.00 0.95 0.95 0.00 0.23 0.23 — 231 231 0.01 0.01 0.42 235 Vendor 0.01 < 0.005 0.17 0.07 < 0.005 < 0.005 0.11 0.12 < 0.005 0.03 0.03 — 122 122 < 0.005 0.02 0.14 128 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 0.02 0.02 0.02 0.20 0.00 0.00 0.17 0.17 0.00 0.04 0.04 — 38.3 38.3 < 0.005 < 0.005 0.07 38.9 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 20.2 20.2 < 0.005 < 0.005 0.02 21.2 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

3.10. Building Construction (2027) - 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

0.43 0.41 9.53 14.8 0.02 0.12 — 0.12 0.11 — 0.11 — 2,397 2,397 0.10 0.02 — 2,405 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 Yountville Commons Project Custom Report, 8/22/2025
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Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Off-Roa
d
Equipm
ent

0.43 0.41 9.53 14.8 0.02 0.12 — 0.12 0.11 — 0.11 — 2,397 2,397 0.10 0.02 — 2,405 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

0.31 0.30 6.80 10.6 0.02 0.08 — 0.08 0.08 — 0.08 — 1,712 1,712 0.07 0.01 — 1,718 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

0.06 0.05 1.24 1.93 < 0.005 0.02 — 0.02 0.01 — 0.01 — 283 283 0.01 < 0.005 — 284 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 0.43 0.42 0.28 4.48 0.00 0.00 3.80 3.80 0.00 0.94 0.94 — 934 934 0.02 0.04 3.48 948 Vendor 0.03 0.01 0.61 0.24 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 464 464 0.02 0.07 1.12 486 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 0.42 0.40 0.35 4.08 0.00 0.00 3.80 3.80 0.00 0.94 0.94 — 870 870 0.03 0.04 0.09 883 Yountville Commons Project Custom Report, 8/22/2025
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Vendor 0.03 0.01 0.65 0.25 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 464 464 0.02 0.07 0.03 485 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 0.29 0.28 0.22 2.80 0.00 0.00 2.63 2.63 0.00 0.65 0.65 — 628 628 0.02 0.03 1.07 637 Vendor 0.02 0.01 0.45 0.18 < 0.005 < 0.005 0.32 0.32 < 0.005 0.08 0.09 — 331 331 0.01 0.05 0.35 347 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 0.05 0.05 0.04 0.51 0.00 0.00 0.48 0.48 0.00 0.12 0.12 — 104 104 < 0.005 < 0.005 0.18 106 Vendor < 0.005 < 0.005 0.08 0.03 < 0.005 < 0.005 0.06 0.06 < 0.005 0.01 0.02 — 54.9 54.9 < 0.005 0.01 0.06 57.4 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

3.12. Building Construction (2028) - 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

0.43 0.41 9.52 14.8 0.02 0.12 — 0.12 0.11 — 0.11 — 2,397 2,397 0.10 0.02 — 2,406 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

0.43 0.41 9.52 14.8 0.02 0.12 — 0.12 0.11 — 0.11 — 2,397 2,397 0.10 0.02 — 2,406 Yountville Commons Project Custom Report, 8/22/2025
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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

0.08 0.07 1.71 2.67 < 0.005 0.02 — 0.02 0.02 — 0.02 — 432 432 0.02 < 0.005 — 433 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

0.01 0.01 0.31 0.49 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 71.5 71.5 < 0.005 < 0.005 — 71.7 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 0.42 0.38 0.24 4.20 0.00 0.00 3.80 3.80 0.00 0.94 0.94 — 917 917 0.02 0.04 3.18 931 Vendor 0.03 0.01 0.58 0.23 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 453 453 0.02 0.07 1.03 475 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 0.40 0.36 0.32 3.82 0.00 0.00 3.80 3.80 0.00 0.94 0.94 — 855 855 0.02 0.04 0.08 867 Vendor 0.03 0.01 0.61 0.24 < 0.005 0.01 0.46 0.46 0.01 0.12 0.12 — 453 453 0.02 0.07 0.03 474 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 0.07 0.06 0.05 0.66 0.00 0.00 0.66 0.66 0.00 0.16 0.16 — 155 155 < 0.005 0.01 0.25 158 Vendor 0.01 < 0.005 0.11 0.04 < 0.005 < 0.005 0.08 0.08 < 0.005 0.02 0.02 — 81.5 81.5 < 0.005 0.01 0.08 85.4 Yountville Commons Project Custom Report, 8/22/2025
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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 0.12 0.00 0.00 0.12 0.12 0.00 0.03 0.03 — 25.7 25.7 < 0.005 < 0.005 0.04 26.1 Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 13.5 13.5 < 0.005 < 0.005 0.01 14.1 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

3.14. Paving (2028) - 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

0.23 0.23 7.21 10.6 0.01 0.09 — 0.09 0.08 — 0.08 — 1,511 1,511 0.06 0.01 — 1,516 Paving 0.09 0.09 — — — — — — — — — — — — — — — —
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

0.23 0.23 7.21 10.6 0.01 0.09 — 0.09 0.08 — 0.08 — 1,511 1,511 0.06 0.01 — 1,516 Paving 0.09 0.09 — — — — — — — — — — — — — — — —
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
— — — — — — — — — — — — — — — — — —
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Off-Roa 0.02 0.02 0.73 1.07 < 0.005 0.01 — 0.01 0.01 — 0.01 — 153 153 0.01 < 0.005 — 154 d
Paving 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 0.13 0.20 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 25.4 25.4 < 0.005 < 0.005 — 25.4 Paving < 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)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.05 0.03 0.56 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 123 123 < 0.005 < 0.005 0.43 125 Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 50.8 50.8 < 0.005 0.01 0.12 53.2 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 0.05 0.05 0.04 0.51 0.00 0.00 0.51 0.51 0.00 0.13 0.13 — 115 115 < 0.005 0.01 0.01 116 Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.01 — 50.8 50.8 < 0.005 0.01 < 0.005 53.1 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 0.01 < 0.005 < 0.005 0.05 0.00 0.00 0.05 0.05 0.00 0.01 0.01 — 11.8 11.8 < 0.005 < 0.005 0.02 11.9 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 5.15 5.15 < 0.005 < 0.005 0.01 5.39 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 — — — — — — — — — — — — — — — — — —
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Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 1.95 1.95 < 0.005 < 0.005 < 0.005 1.98 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.85 0.85 < 0.005 < 0.005 < 0.005 0.89 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

3.16. Architectural Coating (2028) - 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

0.02 0.02 1.07 0.96 < 0.005 0.03 — 0.03 0.03 — 0.03 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s

14.1 14.1 — — — — — — — — — — — — — — — —
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

0.02 0.02 1.07 0.96 < 0.005 0.03 — 0.03 0.03 — 0.03 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s

14.1 14.1 — — — — — — — — — — — — — — — —
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 Yountville Commons Project Custom Report, 8/22/2025
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Average — — — — — — — — — — — — — — — — — —
Daily
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.11 0.10 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 13.5 13.5 < 0.005 < 0.005 — 13.6 Architect
ural
Coating
s

1.43 1.43 — — — — — — — — — — — — — — — —
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 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.24 2.24 < 0.005 < 0.005 — 2.25 Architect
ural
Coating
s

0.26 0.26 — — — — — — — — — — — — — — — —
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 0.08 0.08 0.05 0.84 0.00 0.00 0.76 0.76 0.00 0.19 0.19 — 183 183 < 0.005 0.01 0.64 186 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.08 0.07 0.06 0.76 0.00 0.00 0.76 0.76 0.00 0.19 0.19 — 171 171 < 0.005 0.01 0.02 173 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 Yountville Commons Project Custom Report, 8/22/2025
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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 0.01 0.01 0.01 0.07 0.00 0.00 0.07 0.07 0.00 0.02 0.02 — 17.5 17.5 < 0.005 < 0.005 0.03 17.8 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 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 2.90 2.90 < 0.005 < 0.005 < 0.005 2.94 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

3.18. Finishing/Landscaping (2028) - 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

0.02 0.02 1.10 0.99 < 0.005 0.03 — 0.03 0.03 — 0.03 — 142 142 0.01 < 0.005 — 142 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
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Off-Roa 0.02 0.02 1.10 0.99 < 0.005 0.03 — 0.03 0.03 — 0.03 — 142 142 0.01 < 0.005 — 142 d
Equipm
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 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.11 0.10 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 14.4 14.4 < 0.005 < 0.005 — 14.4 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 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.38 2.38 < 0.005 < 0.005 — 2.39 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)
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 20.5 20.5 < 0.005 < 0.005 0.07 20.9 Yountville Commons Project Custom Report, 8/22/2025
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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 0.07 0.03 1.44 0.50 0.01 0.01 1.05 1.06 0.01 0.27 0.29 — 1,144 1,144 0.05 0.18 2.11 1,202 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 19.1 19.1 < 0.005 < 0.005 < 0.005 19.4 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 0.07 0.02 1.52 0.51 0.01 0.01 1.05 1.06 0.01 0.27 0.29 — 1,144 1,144 0.05 0.18 0.05 1,200 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 1.96 1.96 < 0.005 < 0.005 < 0.005 1.99 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 0.01 < 0.005 0.15 0.05 < 0.005 < 0.005 0.10 0.10 < 0.005 0.03 0.03 — 116 116 0.01 0.02 0.09 122 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 0.32 0.32 < 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 < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 19.2 19.2 < 0.005 < 0.005 0.02 20.2

5. Activity Data

5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Demolition Demolition 4/1/2026 6/1/2026 5.00 44.0 —
Site Preparation Site Preparation 6/2/2026 6/29/2026 5.00 20.0 — Grading Grading 6/30/2026 8/21/2026 5.00 39.0 —
Building Construction Building Construction 8/22/2026 4/1/2028 5.00 420 — Paving Paving 2/10/2028 4/1/2028 5.00 37.0 —
Architectural Coating Architectural Coating 2/10/2028 4/1/2028 5.00 37.0 — Finishing/Landscaping Trenching 2/10/2028 4/1/2028 5.00 37.0 — Yountville Commons Project Custom Report, 8/22/2025
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5.2. Off-Road Equipment

5.2.2. Mitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Demolition Rubber Tired Dozers Diesel Tier 4 Interim 2.00 8.00 367 0.40 Demolition Excavators Diesel Tier 4 Interim 3.00 8.00 36.0 0.38 Demolition Concrete/Industrial
Saws
Diesel Tier 4 Interim 1.00 8.00 33.0 0.73
Site Preparation Rubber Tired Dozers Diesel Tier 4 Interim 3.00 8.00 367 0.40 Site Preparation Tractors/Loaders/Back
hoes
Diesel Tier 4 Interim 4.00 8.00 84.0 0.37
Grading Graders Diesel Tier 4 Interim 1.00 8.00 148 0.41 Grading Excavators Diesel Tier 4 Interim 1.00 8.00 36.0 0.38 Grading Tractors/Loaders/Back
hoes
Diesel Tier 4 Interim 3.00 8.00 84.0 0.37
Grading Rubber Tired Dozers Diesel Tier 4 Interim 1.00 8.00 367 0.40 Building Construction Forklifts Diesel Tier 4 Interim 3.00 8.00 82.0 0.20 Building Construction Generator Sets Diesel Average 1.00 8.00 14.0 0.74 Building Construction Cranes Diesel Tier 4 Interim 1.00 7.00 367 0.29 Building Construction Welders Diesel Tier 4 Interim 1.00 8.00 46.0 0.45 Building Construction Tractors/Loaders/Back
hoes
Diesel Tier 4 Interim 3.00 7.00 84.0 0.37
Paving Pavers Diesel Tier 4 Interim 2.00 8.00 81.0 0.42 Paving Paving Equipment Diesel Tier 4 Interim 2.00 8.00 89.0 0.36 Paving Rollers Diesel Tier 4 Interim 2.00 8.00 36.0 0.38 Architectural Coating Air Compressors Diesel Tier 4 Interim 1.00 6.00 37.0 0.48 Finishing/Landscaping Excavators Diesel Tier 4 Interim 1.00 8.00 36.0 0.38

5.3. Construction Vehicles
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5.3.2. Mitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Demolition — — — —
Demolition Worker 15.0 11.7 LDA,LDT1,LDT2
Demolition Vendor 8.00 8.40 HHDT,MHDT
Demolition Hauling 14.0 20.0 HHDT
Demolition Onsite truck 1.00 0.83 HHDT
Site Preparation — — — —
Site Preparation Worker 17.5 11.7 LDA,LDT1,LDT2
Site Preparation Vendor 19.0 8.40 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck 1.00 2.89 HHDT
Grading — — — —
Grading Worker 15.0 11.7 LDA,LDT1,LDT2
Grading Vendor 17.0 8.40 HHDT,MHDT
Grading Hauling 0.00 20.0 HHDT
Grading Onsite truck 1.00 2.06 HHDT
Building Construction — — — —
Building Construction Worker 112 11.7 LDA,LDT1,LDT2
Building Construction Vendor 17.8 8.40 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck 0.00 0.00 HHDT
Paving — — — —
Paving Worker 15.0 11.7 LDA,LDT1,LDT2
Paving Vendor 2.00 8.40 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck 0.00 0.00 HHDT
Architectural Coating — — — —
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Architectural Coating Worker 22.3 11.7 LDA,LDT1,LDT2
Architectural Coating Vendor 0.00 8.40 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck 0.00 0.00 HHDT
Finishing/Landscaping — — — —
Finishing/Landscaping Worker 2.50 11.7 LDA,LDT1,LDT2
Finishing/Landscaping Vendor 0.00 8.40 HHDT,MHDT
Finishing/Landscaping Hauling 16.9 20.0 HHDT
Finishing/Landscaping Onsite truck 0.00 0.00 HHDT

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied PM10 Reduction PM2.5 Reduction Water unpaved roads twice daily 55% 55%
Limit vehicle speeds on unpaved roads to 25 mph 44% 44% Sweep paved roads once per month 9% 9%

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 138,713 46,238 16,500 5,500 8,910

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 (Ton of
Debris)
Acres Paved (acres)
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Demolition 0.00 0.00 0.00 2,034 —
Site Preparation 0.00 0.00 30.0 0.00 —
Grading 0.00 0.00 39.0 0.00 —
Paving 0.00 0.00 0.00 0.00 3.41
Finishing/Landscaping 5,000 0.00 3.00 0.00 —

5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%
Water Demolished Area 2 36% 36%

5.7. Construction Paving
Land Use Area Paved (acres) % Asphalt
Government (Civic Center) 0.00 0%
High Turnover (Sit Down Restaurant) 0.00 0%
Apartments Mid Rise — 0%
Other Non-Asphalt Surfaces 2.15 0%
Other Asphalt Surfaces 1.26 100%
Strip Mall 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
2027 0.00 204 0.03 < 0.005
2028 0.00 204 0.03 < 0.005
Yountville Commons Project Custom Report, 8/22/2025
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8. User Changes to Default Data
Screen Justification
Land Use Based on PD and preliminary conceptual site plan Construction: Architectural Coatings Bay Area Air District (Air District) Regulation 8 Rule 3 Operations: Road Dust Air District recommends modification of the silt loading factor to 0.5 g/m2 for all roadways which corresponds to vehicle travel on roads with at least 5,000 vehicle per day under worst-case conditions.

Operations: Architectural Coatings Bay Area Air District (Air District) Regulation 8 Rule 3 Construction: Construction Phases Conservatively assume building construction, paving, architectural coating, and finishing/landscaping would overlap.

Construction: Off-Road Equipment Equipment for finishing/landscaping phase based on similar development project, see assumptions file.

Construction: Dust From Material Movement Assumption for import of topsoil for landscaping over 3 acres Construction: Trips and VMT Included water trucks to vendor trips and calculated onsite truck trip length, see assumptions file
Operations: Vehicle Data For Government (Civic Center) use, assume same weekday trip gen for Saturday and Sunday week trips.

Operations: Hearths Assume each home will have an electric fireplace and compliance with Air District Rule 6-3-306.

Operations: Water and Waste Water Assume 100% aerobic treatment Operations: Fleet Mix Fleet mix for the project is modified to reflect a higher proportion of passenger vehicles that the regional VMT. Assumes a mix of approximately 97% passenger vehicles, 2% medium duty trucks, and 1% heavy duty trucks and buses.

Operations: Energy Use The proposed project would be all-electric therefore the natural gas usage was omitted in CalEEMod.

Construction: On-Road Fugitive Dust Air District recommends modification of the silt loading factor to 0.5 g/m2 for all roadways which corresponds to vehicle travel on roads with at least 5,000 vehicle per day under worst-case conditions.

Emissions Worksheet

Regional Construction Emissions
Annual Average Emissions with Best Control Measures for Fugitive Dust Year Start End Workdays
2026 4/1/2026 12/31/2026 197
2027 1/1/2027 12/31/2027 261
2028 1/1/2028 4/1/2028 65
Entire 4/1/2026 4/1/2028 523
Emissions by Year (tons/year)
ROG NOx CO SO2
Exhaust
PM10
Fugitive
PM10
PM10
Total
Exhaust
PM2.5
Fugitive
PM2.5
PM2.5
Total
2026 0.19 1.61 1.92 0.00 0.06 0.43 0.49 0.06 0.13 0.19
2027 0.19 1.35 2.23 0.00 0.04 0.54 0.58 0.04 0.13 0.17
2028 0.33 0.51 0.81 0.00 0.02 0.18 0.20 0.01 0.04 0.06
Total 0.70 3.46 4.96 0.01 0.12 1.15 1.27 0.11 0.31 0.43 Average Daily Emissions (lbs/day)
ROG NOx CO SO2
Exhaust
PM10
Fugitive
PM10
PM10
Total
Exhaust
PM2.5
Fugitive
PM2.5
PM2.5
Total
2026 1.92 16.34 19.47 0.03 0.63 4.37 5.00 0.58 1.36 1.95 2027 1.44 10.33 17.09 0.03 0.34 4.12 4.46 0.32 1.02 1.34 2028 10.03 15.55 24.95 0.04 0.48 5.53 6.01 0.45 1.37 1.82 Overall 2.69 13.24 18.96 0.03 0.47 4.39 4.86 0.43 1.19 1.63 BAAQMD Average Daily Threshold 54 54 NA NA 82 BMPs NA 54 BMPs NA Exceed Average Daily Thresholds? No No NA NA No NA NA No NA NA Annual emissions divided by total construction duration to obtain average daily emissions. Average construction emissions accounts for the duration of each construction phase and the time each piece of construction equipment is onsite.

Bay Area Air District
Multi-land Use Screening Tool
Multi-land Use Screening Tool Overview
Instructions
Land Use Category Land Use Type Unit Project
Land Use Size
Has Overlapping
Construction
Phases?
Commercial Government (Civic Center) KSF 8.0 FALSE
Recreational High Turnover (Sit Down Re KSF 1.5 FALSE
Residential Apartments Mid Rise DU 150.0 FALSE
Parking Other Non-Asphalt Surface KSF 93.5 FALSE
Parking Other Asphalt Surfaces KSF 55.0 FALSE
Retail Strip Mall KSF 1.5 FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
Developed by
Last updated: 5/6/2022
This screening tool helps to determine whether the daily construction or operational emissions associated with a proposed land use development project with multiple land use types would exceed BAAQMD's average daily thresholds.

Exceeds Construction Threshold?
Exceeds Operational Threshold?
BAAQMD's Recommendation
Use the drop-down menus to select the land use category and land use type for each type of land use included in the project. Enter the proposed size of each land use based on the default units that are autopopulated in column D.

The tool will estimate whether the project may exceed the construction thresholds, operational thresholds, or both, and whether further analysis is needed before making a significance determination. This tool will not work for projects which have construction-related activities overlapping with operational activities, and vice versa.

Construction and Operation Screening Tool
NO
NO
Further Analysis Not Required

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