2007 Ozone Plan 

Appendix B 

 

Emissions Inventory 
2007 Ozone Plan 

This page intentionally blank.
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-1

Appendix B: Emissions Inventory

B.1 INTRODUCTION 

This Appendix includes summer average emissions inventories for the San Joaquin 

Valley Air Basin for the years 2002, 2008, 2011, and 2012, which are the milestone 

years for serious areas. The baseyear (the year from which the inventory is projected 

forward and backward) for these inventories is 2002. The year 2005 has been included 

for control measure development. The years 2014, 2017, 2018, 2020, and 2023 are 

milestone or modeling years for classifications higher than serious. Table B-3 contains 

NOx, and Table B-4 contains VOC. This Appendix concludes with an overview of 

emissions inventory calculations and revisions. These summer average (May-October) 

inventories reflect emissions during the ozone season. Results from EMFAC 2007 have 

been incorporated into the mobile source portion of the inventories. 

The official ARB inventories shown in Tables B-3 and B-4 do not yet include projected 

reductions for several important recent District rules shown in Table B-1. ARB’s 

adjustments are presented in Table B-2. 
San Joaquin Valley Unified Air Pollution Control District 

Appendix B

Appendix B-2

Table B-1 Reductions from District Rules Not Reflected in the Emissions Invent

(to be subtracted from O3SIP inventories provided by ARB) 

Projected Reduction

District Rule 

2002 2005 2008 2011 20

NOx Reductions 

Rule 4103 Open Burning 0 0.05 0.05 0.05 0Rule 4307 & 4308 Boilers, Steam Generators, and Process Heaters 0 0.00 0.21 0.53 0Rule 4309 Dryers, Dehydrators, and Ovens 0 0.00 0.60 0.90 0Rule 4702 Internal Combustion Engines - Phase II 0 -0.97 7.38 12.51 13Rule 9510 Indirect Source Mitigation – On road 0 0.00 2.70 1.30 1Rule 9510 Indirect Source Mitigation – Off road 0 0.00 1.10 4.60 5Rule 9310 School Bus Fleets 0 0.00 0.11 0.35 0 On-Road Sub-Total for Conformity Budgets NA NA 2.81 1.65 N

NOx Increases – due to new inventory information 

Rule 4702 Internal Combustion Engines - Phase II 5.53 5.48 5.44 5.40 5

NET DISTRICT NOx ADJUSTMENT 

To be subtracted from O3SIP inventory -5.53* -6.40 6.71 14.84 16

VOC Reductions

Rule 4570 Confined Animal Feeding Operations 0 0.00 8.88 19.09 19Rule 4694 Wine Fermentation and Storage 0 0.00 1.23 1.26 1Rule 4103 Open Burning 0 0.05 0.05 0.05 0Rule 4602 & 4612 Automotive coatings 0 0.00 0 0.83 0Rule 4401 Steam Enhanced Crude Oil Production Well Vents 0 0.00 1.13 1.08 1

VOC Increases – due to new inventory information 

 Composting Greenwaste 46.6 51.0 53.0 55.0 5

Composting Biosolids 8.5 9.1 9.8 9.9 1

NET DISTRICT VOC ADJUSTMENT 

To be subtracted from O3SIP inventory -55.1* -60.2* -51.5* -42.6* -4

* Please note that subtracting a negative number from O3SIP indicates an increase in the emissions inventory. 
San Joaquin Valley Unified Air Pollution Control District 

Appendix B

Appendix B-3

Table B-2 ARB Adjustments to Emissions Inventory Baseline 

Description 2002 2008 2011 2014 2017 2020 20

NOx 

Reflash 0.7 11.9 8.9 6.1 3.6 1.7 Idling 0.0 10.0 11.1 12.2 13.1 14.0 1On-road Moyer 0.4 0.3 0.5 0.5 0.3 0.0 Off-road Moyer 0.4 0.3 0.6 0.6 0.4 0.0 On-Road Sub-Total for Conformity Budgets NA 22.2 20.5 18.8 17.0 15.7 1Off-road (Transportation Refrigeration Unit (TRU), Portable Diesel Engine, and Large Spark Ignition Regulation) 

0.0 0.8 2.0 2.0 1.5 1.1 

Ships 0.0 0.0 0.0 0.0 0.1 0.1 LSI (Large Spark Ignition) 0.0 0.0 0.0 0.2 0.2 0.2 

TOTAL STATE STRATEGY

(to be subtracted from O3SIP) 

1.5 23.3 23.1 21.6 19.2 17.1 1

VOC 

On-road Moyer 0.0 0.0 0.05 0.05 0.0 0.0 Off-road Moyer 0.0 0.0 0.06 0.06 0.0 0.0 Off-road (Transportation Refrigeration Unit (TRU), Portable Diesel Engine, and Large Spark Ignition Regulation) 0.8 1.4 1.4 1.4 1.4 1.5 Consumer Products 0.0 1.0 1.0 1.1 1.2 1.2 

TOTAL STATE STRATEGY

(to be subtracted from O3SIP) 

0.8 2.4 2.5 2.6 2.6 2.7 
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-4

B.2 EMISSIONS INVENTORY TABLES 

Table B-3 Summer Average Nitrogen Oxides (NOx) Emissions Inventory, tons per 

day 

(O3SIP (v1.06_RF980)) 

SUMMARY CATEGORY NAME 2002 2005 2008 2011 2012 2014 2017 2018 2020 2023

STATIONARY SOURCES 

FUEL COMBUSTION 

ELECTRIC UTILITIES 3.1 3.3 3.0 3.2 3.2 3.2 3.3 3.4 3.5 3.6

COGENERATION 10.6 10.0 7.1 7.3 7.4 7.5 7.8 7.9 8.2 8.4

OIL AND GAS PRODUCTION (COMBUSTION) 15.5 11.2 10.2 9.9 9.9 9.8 9.7 9.7 9.7 9.7

PETROLEUM REFINING (COMBUSTION) 0.2 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

MANUFACTURING AND INDUSTRIAL 36.6 37.7 39.4 41.3 42.0 43.5 45.3 45.8 46.9 47.5

FOOD AND AGRICULTURAL PROCESSING 25.0 24.1 21.7 20.0 19.4 18.1 16.0 15.3 13.7 11.2

SERVICE AND COMMERCIAL 4.6 4.4 4.5 4.5 4.5 4.6 4.6 4.6 4.6 4.6

OTHER (FUEL COMBUSTION) 1.9 1.6 1.4 1.3 1.2 1.2 1.1 1.0 1.0 1.0

* TOTAL FUEL COMBUSTION 97.6 92.5 87.4 87.7 87.8 87.9 87.9 87.8 87.6 86.1

WASTE DISPOSAL 

SEWAGE TREATMENT 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

LANDFILLS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

INCINERATORS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

SOIL REMEDIATION 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

OTHER (WASTE DISPOSAL) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

* TOTAL WASTE DISPOSAL 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

CLEANING AND SURFACE COATINGS 

LAUNDERING 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

DEGREASING 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

COATINGS AND RELATED PROCESS 

SOLVENTS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

PRINTING 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

ADHESIVES AND SEALANTS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

OTHER (CLEANING AND SURFACE COATINGS) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

* TOTAL CLEANING AND SURFACE COATINGS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

PETROLEUM PRODUCTION AND MARKETING 

OIL AND GAS PRODUCTION 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

PETROLEUM REFINING 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

PETROLEUM MARKETING 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

OTHER (PETROLEUM PRODUCTION AND 

MARKETING) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-5

SUMMARY CATEGORY NAME 2002 2005 2008 2011 2012 2014 2017 2018 2020 2023

* TOTAL PETROLEUM PRODUCTION AND 

MARKETING 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

INDUSTRIAL PROCESSES 

CHEMICAL 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.4

FOOD AND AGRICULTURE 9.4 9.3 9.1 9.0 9.0 9.0 8.9 8.9 8.8 8.7

MINERAL PROCESSES 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2

METAL PROCESSES 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

WOOD AND PAPER 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

GLASS AND RELATED PRODUCTS 9.6 9.4 8.0 8.6 8.7 9.1 9.6 9.8 10.1 10.6

OTHER (INDUSTRIAL PROCESSES) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

* TOTAL INDUSTRIAL PROCESSES 21.8 21.5 20.2 20.8 21.0 21.5 22.1 22.3 22.7 23.3

** TOTAL STATIONARY SOURCES 119.8 114.5 108.0 108.9 109.3 109.9 110.5 110.6 110.8 109.9

AREA-WIDE SOURCES 

SOLVENT EVAPORATION 

CONSUMER PRODUCTS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

ARCHITECTURAL COATINGS AND RELATED 

PROCESS SOLVENTS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

PESTICIDES/FERTILIZERS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

ASPHALT PAVING / ROOFING 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

* TOTAL SOLVENT EVAPORATION 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

MISCELLANEOUS PROCESSES 

RESIDENTIAL FUEL COMBUSTION 3.2 3.1 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0

FARMING OPERATIONS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

CONSTRUCTION AND DEMOLITION 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

PAVED ROAD DUST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

UNPAVED ROAD DUST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

FUGITIVE WINDBLOWN DUST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

FIRES 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

MANAGED BURNING AND DISPOSAL 8.3 8.2 8.2 8.1 8.1 8.0 8.0 7.9 7.9 7.9

COOKING 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

OTHER (MISCELLANEOUS PROCESSES) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

* TOTAL MISCELLANEOUS PROCESSES 11.5 11.3 11.1 11.1 11.1 11.0 11.0 11.0 11.0 10.9

** TOTAL AREA-WIDE SOURCES 11.5 11.3 11.1 11.1 11.1 11.0 11.0 11.0 11.0 10.9

MOBILE SOURCES 

ON-ROAD MOTOR VEHICLES 

LIGHT DUTY PASSENGER (LDA) 31.3 21.8 16.7 13.1 11.8 9.7 7.3 6.7 5.7 4.7

LIGHT DUTY TRUCKS - 1 (LDT1) 13.2 9.7 7.4 5.9 5.5 4.6 3.5 3.1 2.7 2.1

LIGHT DUTY TRUCKS - 2 (LDT2) 24.4 19.2 15.1 12.5 11.5 9.9 7.8 7.3 6.4 5.4

MEDIUM DUTY TRUCKS (MDV) 14.7 13.1 10.3 8.6 8.1 7.1 5.8 5.4 4.7 3.8
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-6

SUMMARY CATEGORY NAME 2002 2005 2008 2011 2012 2014 2017 2018 2020 2023

LIGHT HEAVY DUTY GAS TRUCKS - 1 (LHDV1) 4.9 4.5 3.8 3.7 3.7 3.6 3.6 3.6 3.5 3.5

LIGHT HEAVY DUTY GAS TRUCKS - 2 (LHDV2) 1.0 1.0 0.9 0.9 0.9 0.9 0.8 0.8 0.8 0.8

MEDIUM HEAVY DUTY GAS TRUCKS (MHDV) 2.3 2.1 1.7 1.5 1.4 1.3 1.0 0.9 0.8 0.7

HEAVY HEAVY DUTY GAS TRUCKS (HHDV) 2.7 2.4 2.0 1.8 1.7 1.6 1.5 1.4 1.4 1.3

LIGHT HEAVY DUTY DIESEL TRUCKS - 1 

(LHDV1) 0.4 5.4 3.9 3.2 3.0 2.7 2.3 2.2 1.9 1.6

LIGHT HEAVY DUTY DIESEL TRUCKS - 2 

(LHDV2) 2.3 3.3 2.9 2.5 2.4 2.1 1.7 1.6 1.4 1.1

MEDIUM HEAVY DUTY DIESEL TRUCKS (MHDV) 19.9 21.5 18.4 15.8 14.6 12.2 9.2 8.4 7.1 5.6

HEAVY HEAVY DUTY DIESEL TRUCKS (HHDV) 199.1 224.2* 237.3 198.6 184.1 156.2 121.0 111.5 96.1 81.8

MOTORCYCLES (MCY) 0.7 1.3 1.3 1.4 1.4 1.4 1.5 1.5 1.5 1.6

HEAVY DUTY DIESEL URBAN BUSES (UB) 2.1 2.2 2.2 2.4 2.4 2.4 2.5 2.5 2.5 2.5

HEAVY DUTY GAS URBAN BUSES (UB) 0.2 0.3 0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.4

SCHOOL BUSES (SB) 2.2 2.4 2.4 2.5 2.5 2.4 2.4 2.3 2.3 2.2

OTHER BUSES (OB) 0.9 1.1 1.0 0.9 0.9 0.8 0.6 0.6 0.5 0.4

MOTOR HOMES (MH) 1.3 1.1 1.0 0.9 0.9 0.8 0.6 0.6 0.5 0.4

* TOTAL ON-ROAD MOTOR VEHICLES 323.5 336.5 328.4 276.4 256.9 219.8 173.3 160.7 140.1 120.1

OTHER MOBILE SOURCES 

AIRCRAFT 2.9 3.0 4.1 4.5 4.6 4.8 5.0 5.1 5.2 5.3

TRAINS 28.5 23.6 21.1 20.4 20.5 20.7 21.0 21.2 21.5 22.0

SHIPS AND COMMERCIAL BOATS 1.2 1.3 1.3 1.3 1.3 1.3 1.4 1.5 1.6 1.8

RECREATIONAL BOATS 3.9 5.0 5.6 5.5 5.5 5.6 5.7 5.7 5.7 5.8

OFF-ROAD RECREATIONAL VEHICLES 0.1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3

OFF-ROAD EQUIPMENT 75.6 70.5 62.6 54.9 52.1 46.5 38.5 36.3 32.4 28.1

FARM EQUIPMENT 71.2 64.0 55.4 48.1 44.7 38.5 30.4 27.9 23.4 18.0

FUEL STORAGE AND HANDLING 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

* TOTAL OTHER MOBILE SOURCES 183.5 167.6 150.2 134.9 128.9 117.5 102.2 97.8 90.0 81.1

** TOTAL MOBILE SOURCES 507.0 504.2 478.6 411.3 385.9 337.3 275.5 258.5 230.2 201.3

 

GRAND TOTAL FOR SAN JOAQUIN VALLEY 638.3 629.9* 597.8 531.4 506.2 458.2 397.0 380.1 351.9 322.1

* The 2005 value for HHDDV includes a factor to correct an EMFAC2007 error. 
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-7

Table B-4 Summer Average Volatile Organic Compounds (VOC), tons per day 

(O3SIP (v1.06_RF980))

SUMMARY CATEGORY NAME 2002 2005 2008 2011 2012 2014 2017 2018 2020 2023

STATIONARY SOURCES 

FUEL COMBUSTION 

ELECTRIC UTILITIES 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6

COGENERATION 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5

OIL AND GAS PRODUCTION (COMBUSTION) 3.1 3.3 3.3 3.2 3.2 3.2 3.3 3.3 3.3 3.4

PETROLEUM REFINING (COMBUSTION) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

MANUFACTURING AND INDUSTRIAL 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5

FOOD AND AGRICULTURAL PROCESSING 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3

SERVICE AND COMMERCIAL 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3

OTHER (FUEL COMBUSTION) 0.2 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

* TOTAL FUEL COMBUSTION 7.3 7.6 7.6 7.5 7.5 7.5 7.6 7.6 7.6 7.7

WASTE DISPOSAL 

SEWAGE TREATMENT 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

LANDFILLS 1.5 1.6 1.7 1.8 1.8 1.8 1.9 2.0 2.0 2.1

INCINERATORS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

SOIL REMEDIATION 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

OTHER (WASTE DISPOSAL) 0.5 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7

* TOTAL WASTE DISPOSAL 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.7 2.8 2.9

CLEANING AND SURFACE COATINGS 

LAUNDERING 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

DEGREASING 8.7 1.5 1.5 1.5 1.5 1.5 1.6 1.6 1.6 1.6

COATINGS AND RELATED PROCESS 

SOLVENTS 7.8 7.7 8.2 8.8 9.0 9.5 10.0 10.2 10.5 11.0

PRINTING 1.6 1.7 1.7 1.8 1.9 2.0 2.1 2.1 2.2 2.3

ADHESIVES AND SEALANTS 3.0 3.2 3.3 3.5 3.6 3.7 3.9 3.9 4.1 4.3

OTHER (CLEANING AND SURFACE COATINGS) 3.0 3.4 3.7 4.1 4.2 4.4 4.7 4.8 5.0 5.3

* TOTAL CLEANING AND SURFACE COATINGS 24.2 17.4 18.5 19.8 20.2 21.2 22.3 22.7 23.4 24.6

PETROLEUM PRODUCTION AND MARKETING 

OIL AND GAS PRODUCTION 29.8 27.9 27.5 26.5 26.1 25.5 24.7 24.5 24.0 23.4

PETROLEUM REFINING 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7

PETROLEUM MARKETING 7.2 7.5 7.9 8.3 8.5 8.7 9.1 9.2 9.5 9.9

OTHER (PETROLEUM PRODUCTION AND 

MARKETING) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

* TOTAL PETROLEUM PRODUCTION AND 

MARKETING 37.7 36.1 36.1 35.5 35.3 34.9 34.5 34.4 34.2 34.1

INDUSTRIAL PROCESSES 

CHEMICAL 2.2 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.4

FOOD AND AGRICULTURE 12.8 12.7 13.0 13.3 13.4 13.7 14.0 14.1 14.4 14.7

MINERAL PROCESSES 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-8

SUMMARY CATEGORY NAME 2002 2005 2008 2011 2012 2014 2017 2018 2020 2023

METAL PROCESSES 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.6

WOOD AND PAPER 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

GLASS AND RELATED PRODUCTS 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5

OTHER (INDUSTRIAL PROCESSES) 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3

* TOTAL INDUSTRIAL PROCESSES 16.3 16.5 17.0 17.5 17.7 18.1 18.7 18.9 19.3 20.1

** TOTAL STATIONARY SOURCES 87.6 79.8 81.5 82.8 83.2 84.3 85.8 86.3 87.3 89.4

AREA-WIDE SOURCES 

SOLVENT EVAPORATION 

CONSUMER PRODUCTS 25.1 23.5 24.0 25.1 25.6 26.6 28.1 28.6 29.6 31.2

ARCHITECTURAL COATINGS AND RELATED 

PROCESS SOLVENTS 13.6 11.1 11.4 11.7 11.8 12.0 12.4 12.5 12.8 13.3

PESTICIDES/FERTILIZERS 23.3 22.9 22.2 21.7 21.6 21.4 21.2 21.1 21.0 20.9

ASPHALT PAVING / ROOFING 2.9 3.0 3.0 3.0 3.0 3.1 3.1 3.1 3.1 3.1

* TOTAL SOLVENT EVAPORATION 65.0 60.4 60.6 61.5 62.0 63.1 64.8 65.4 66.5 68.5

MISCELLANEOUS PROCESSES 

RESIDENTIAL FUEL COMBUSTION 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

FARMING OPERATIONS 62.0 65.4 68.7 72.5 74.0 76.9 81.4 82.9 85.9 90.3

CONSTRUCTION AND DEMOLITION 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

PAVED ROAD DUST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

UNPAVED ROAD DUST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

FUGITIVE WINDBLOWN DUST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

FIRES 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

MANAGED BURNING AND DISPOSAL 13.7 13.6 13.5 13.5 13.4 13.4 13.3 13.2 13.2 13.1

COOKING 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6

OTHER (MISCELLANEOUS PROCESSES) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

* TOTAL MISCELLANEOUS PROCESSES 76.8 80.0 83.3 86.9 88.4 91.3 95.7 97.2 100.1 104.5

** TOTAL AREA-WIDE SOURCES 141.8 140.5 143.9 148.4 150.4 154.4 160.5 162.5 166.6 173.0

MOBILE SOURCES 

ON-ROAD MOTOR VEHICLES 

LIGHT DUTY PASSENGER (LDA) 40.0 31.1 23.9 19.1 17.5 14.6 11.6 10.8 9.6 8.4

LIGHT DUTY TRUCKS - 1 (LDT1) 14.2 11.6 9.1 7.4 6.9 6.0 4.8 4.5 4.0 3.6

LIGHT DUTY TRUCKS - 2 (LDT2) 17.7 15.8 13.2 12.0 11.5 10.4 9.1 8.8 8.3 7.8

MEDIUM DUTY TRUCKS (MDV) 9.5 8.6 7.2 6.7 6.5 6.1 5.6 5.4 5.1 4.7

LIGHT HEAVY DUTY GAS TRUCKS - 1 (LHDV1) 6.1 5.1 3.4 2.8 2.7 2.5 2.3 2.3 2.2 2.0

LIGHT HEAVY DUTY GAS TRUCKS - 2 (LHDV2) 1.3 1.2 0.9 0.8 0.7 0.6 0.5 0.5 0.5 0.4

MEDIUM HEAVY DUTY GAS TRUCKS (MHDV) 3.6 2.9 2.2 1.7 1.5 1.2 0.8 0.7 0.5 0.4

HEAVY HEAVY DUTY GAS TRUCKS (HHDV) 1.5 1.2 0.9 0.7 0.7 0.6 0.4 0.4 0.3 0.3

LIGHT HEAVY DUTY DIESEL TRUCKS - 1 

(LHDV1) 0.0 0.2 0.2 0.2 0.2 0.1 0.1 0.1 0.1 0.1

LIGHT HEAVY DUTY DIESEL TRUCKS - 2 

(LHDV2) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

MEDIUM HEAVY DUTY DIESEL TRUCKS (MHDV) 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.3

HEAVY HEAVY DUTY DIESEL TRUCKS (HHDV) 14.6 16.0* 17.1 14.8 14.0 12.3 10.0 9.4 8.4 7.3

MOTORCYCLES (MCY) 3.6 6.1 5.5 5.3 5.3 5.3 5.4 5.5 5.6 5.9
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-9

SUMMARY CATEGORY NAME 2002 2005 2008 2011 2012 2014 2017 2018 2020 2023

HEAVY DUTY DIESEL URBAN BUSES (UB) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

HEAVY DUTY GAS URBAN BUSES (UB) 0.1 0.1 0.1 0.2 0.2 0.2 0.2 0.2 0.2 0.2

SCHOOL BUSES (SB) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

OTHER BUSES (OB) 0.3 0.2 0.2 0.2 0.2 0.2 0.1 0.1 0.1 0.1

MOTOR HOMES (MH) 0.5 0.4 0.3 0.2 0.2 0.2 0.1 0.1 0.1 0.0

* TOTAL ON-ROAD MOTOR VEHICLES 113.9 101.7 85.2 73.1 68.9 61.1 52.1 49.6 45.7 41.9

OTHER MOBILE SOURCES 

AIRCRAFT 6.6 6.8 8.7 9.5 9.7 9.9 10.4 10.5 10.8 10.9

TRAINS 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6

SHIPS AND COMMERCIAL BOATS 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

RECREATIONAL BOATS 20.3 20.5 19.2 17.9 17.6 17.1 16.8 16.7 16.6 16.8

OFF-ROAD RECREATIONAL VEHICLES 5.8 7.2 7.8 8.4 8.6 9.2 10.1 10.5 11.3 12.5

OFF-ROAD EQUIPMENT 22.1 22.0 18.9 16.3 15.6 14.2 12.7 12.3 11.7 11.5

FARM EQUIPMENT 14.6 13.3 11.2 9.5 8.7 7.2 5.5 5.0 4.2 3.5

FUEL STORAGE AND HANDLING 5.2 5.1 3.6 3.0 2.8 2.5 2.3 2.2 2.1 2.0

* TOTAL OTHER MOBILE SOURCES 76.3 76.6 70.9 66.2 64.6 61.9 59.4 58.9 58.4 58.8

** TOTAL MOBILE SOURCES 190.2 178.3 156.1 139.3 133.5 123.0 111.5 108.5 104.2 100.7

GRAND TOTAL FOR SAN JOAQUIN VALLEY 419.6 398.6* 381.5 370.6 367.2 361.7 357.7 357.3 358.1 363.0

* The 2005 value for HHDDV includes a factor to correct an EMFAC2007 error.
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-10

B.3 EMISSIONS INVENTORY CALCULATIONS AND REVISIONS 

Emissions are estimated in a variety of ways. Some point and mobile sources may 

have emissions source tests or continuous emissions monitoring, which can provide 

direct tabulation of emission rates. Data from source-specific emission tests or 

continuous emission monitors are usually preferred for estimating a source's emissions 

because those data provide the best representation of the source's emissions. 

Typically, the mobile source inventory is based on population, activity rates, fuel 

specifications, and emissions of typical vehicles. For area sources, estimates are made 

based on 'surrogate' data that is assumed to be proportional to emissions, such as 

population, employment, economic data or some type of human activity. If no 

emissions data are available for a particular source, the District may send a survey to 

businesses that are identified as producing emissions form that source. The survey 

typically requests data that are used to estimate emissions. Each of the local air 

districts estimates the emissions for the stationary sources within its jurisdiction. 

Emissions from natural sources are typically estimated by conducting a scientific study. 

ARB estimates emissions of biogenic volatile organic compounds (BVOCs) from 

vegetation for natural areas, crops, and urban vegetation. BVOC emissions are 

functions of the species leaf mass, emission factors, temperature, and light conditions. 

Other pollutants (e.g. NOx) also have biogenic sources. 

B.3.1 Emission Factors and Emission Equations 

The general equation for emission estimation is: 

E = A x EF x (1-ER/100) 

where: 

E = emissions 

A = activity rate 

EF = emission factor 

ER = overall emission reduction efficiency, percent 

An emission factor relates the quantity of a pollutant emitted into the atmosphere 

to an activity associated with the pollutant’s release. Such factors may be used in 

equations to estimate emissions from a process where source specific data is not 

available. Emission factors are typically expressed as the weight of pollutant 

divided by a unit weight, area, volume, distance, or duration of the activity 

emitting the pollutant. In most cases, these factors are simply averages of all 

available data of acceptable quality, and are generally assumed to be 

representative of long-term averages for all facilities in the source category. EPA 

publishes emission factors for many emissions categories in the document 

entitled AP-42. 
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-11

Once an emission factor is determined, the next step is to determine the population 

(number of sources) and extent of each source. Population data is collected directly 

and indirectly. For example, vehicle registration data are gathered by the state. 

Stationary sources must obtain a permit from the District; therefore, populations of 

permitted equipment are directly obtained and are reasonably accurate. The number of 

fireplaces is not reported and must be estimated indirectly using housing statistics and 

surveys. Each source category has its own methodology. 

The next step is to determine an activity rate. Activity data is reported in hours of 

operation, gallons of fuel used, miles traveled, and other units. Stationary sources of 

emissions permitted by the District are required to report actual emissions to ensure that 

they remain below their emission limits. This provides detailed activity data that is used 

in the emissions inventory. In other cases, facility operators can inform the District of 

their actual production figures or fuel burned. A survey is often carried out to determine 

usage rates. 

B.3.2 Emissions Inventory Updates 

The District, in cooperation with the ARB, is committed to continually updating the 

emissions inventory as research, emission factor updates, and other information 

become available. When emissions data change dramatically, the District is committed 

to revising the inventory and ensuring that any impact is reflected in the control strategy 

and the attainment demonstration. 

The District re-evaluates the emissions inventory on a regular basis to ensure that the 

inventory is accurate and current. Major point sources are typically re-evaluated every 

year. Area sources are scheduled to be re-evaluated every one to five years. Seventyfive area source categories were updated during the period from 2003 to 2006. 

The District updates emissions growth estimates on a periodic basis. Ten source 

categories are being examined in 2006 to reevaluate growth trends. The District also 

revises emissions estimates based on the effects of District prohibitory rules on an 

emissions source category. Approximately sixty-eight District prohibitory rules will be 

examined in 2006 to evaluate emissions controls and the effect of the rule requirements 

on the emissions inventory. 
San Joaquin Valley Unified Air Pollution Control District April 30, 2007

Appendix B: Emissions Inventory 

2007 Ozone Plan 

Appendix B-12

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