*Biogenics are not included in the trends Updated Mar 27, 2018 Updates since December 19, 2016 Added 2014v2 and recalculated emissions for 2012 & 2013 emissions. Updated 2015-2017 SO2 and N data not available from CAMD were pulled forward from 2014v2 NEI. 2015-2017 mobile emissions we modeling files did not include data for locomotive, commercial marine vessels and aircrafts. These em Notable changes from 2014v1 to 2014v2 1. Fuel Comb Industrial - new state estimates, limited changes in ICI methodology and updated activi 2. Fuel Comb Other - Limited changes to Residential Wood Combustion resulted in changes to CO, PM 3. Petroleum & Related Industries - new estimates from some states and limited changes to Oil & Gas 4. Highway Vehicles - New inputs (representative counties, new fleet ages, proportions of alternate fu 5. Off-Highway - New rail computed, CMV port limited to water and several states updated activity da 6. Miscellaneous - New submittals, limited methodology changes in unpaved road dust, fertilizer EFs u errors fixed. These changes resulted in noticeable if not significant changes in CO, PM10, PM2.5, SO2 For more detailed documentation on the 2014v2 NEI please refer to the Technical Support Document ( https://www.epa.gov/air-emissions-inventories/2014-national-emissions-inventory-nei-technical-suppo Updates since February 27, 2014: Updated 2011 NEI v1 with 2011 NEI v2. 2009 & 2010 non-mobile emissions recalculated as a result o emissions to the most recent CAMD available data. Updates since February 17, 2014: Wildfires for 2002v3 were updated to accurately reflect the inventory published on http://www.epa.gov 2003 and 2004 Miscellaneous has been recalculated to reflect the adjustments to the 2002 Wildfire em Updates since December 4, 2013: Added Puerto Rico, Virgin Islands and Tribal data back into the trend line. These were discovered to be data were estimated using interpolation for interim years and held constant after 2011. Puerto Rico, Virgin Islands and Tribal data were not present in the MOVES database or for NOx and SO interpolated values and then appended to the other data sources used for updating. 2012 & 2013 Puerto Rico, Virgin Islands and Tribal data were held constant from the 2011 NEI for all p 2013 EGU NOx and SO2 emissions were updating using CAMD's final estimates. Updates since June 6, 2013: Now using NEI 2011 v1 at the Tier 1 level. Onroad & Nonroad updates for 2007, 2009 and 2010 from MOVES. 2006 mobile emissions were recalculated using interpolation between 2005 MOVES data and 2007 MO 2009 & 2010 non-mobile emissions were recalculated using interpolation between NEI 2008v3 and NE CEM data for 2013 is currently only available for the first three quarters of the year. The percent chan AK and HI CEM data are not provided from CAMD and are held constant from 2011. Projected 2020 inventory for mobile emissions were used to calculate 2012 and 2013 onroad and non 2012 and 2013 emissions for non-EGU and non-mobile are held constant from 2011. Updates since June 12, 2012: Now using NEI 2008 v3 at the Tier 1 level. 2006 and 2007 were recalculated using interpolation between NEI 2005 v2 and NEI 2008 v3. 2002 and 2005 MOVES data were used to update 2002-2007. 2012 CEM annual data were used to update the previous estimate. Updates since June 14, 2011: Now using NEI 2008v2 at the Tier 1 level. Adjusted "Open burning" This update affects emissions for year 2006 and after. The NEI 2005 v2 and the 2008 NEI v2 are applied to recalculate 2006 and 2007 as an interpolation be 2009-2012 values were filled with 2008v2 emissions (flat lined) except where noted because presentl 2008v2 inventory. EGU (electric generating utility) NOx and SO2 emissions for 2009-2011 were updated with continuous database. CEM data for 2012 is currently only available for the first three quarters of the year. The percent chan Alaska and Hawaii CEM data are not provided from CAMD and are held constant from 2008. Projected 2012 inventory data from the 2005-based modeling platform . Process taken to update data: 1. Retrieve NEI 2014v2 onroad, nonroad, nonpoint & point SCC files. 2. Open all files in a text editor that supports large file sizes (for checking total records). 3. Import separate datafiles into SAS and use the numbers found in step two to ensure all records imp 4. Combine datasets then check to makse sure all records are there. 5. Sum the data to pollutant totals. 6. Check pollutant totals against the NEI 2014v2 page or EIS summaries. 7. Run the database through our SCC_to_Tier crosswalk. (available at www.epa.gov/scc) 8. Check post merge to make sure all SCCs have an assigned Tier. 9. Sum data up to pollutant totals again and check totals against EIS summaries or 2014 NEI webpag 10. An extra step for checking sums -> added back in removed data and check totals again. 11. Sum data up to national/Tier1/pollutant level. 12. Take the new 2005 prescribed fire emissions and add those back into the Miscellaneous Tier. 13. Interpolate 2009 and 2010 emissions after removal of wildfires. 14. 2008 wildfire emissions are flatlined for 2009 and 2010 while 2011 wildfire emissions are flatlined constant for 2015-2017. 15. All emissions are held constant for 2015-2017 using the NEI 2014v2, except for Tiers: Fuel Comb. Off-Highway. For Fuel Comb. Elec. Util NOx and SO2 the data are replaced by emissions obtained from fuseaction=emissions.wizard using state level/quick reports. AK, HI, PR, VI and Tribal emissions are no 16. Highway Vehicles and Off-Highway use MOVES and NONROAD from the modeling files for years: '0 values were interpolated after using the 2017 modeling data (ftp://newftp.epa.gov/air/emismod/2014/ available and the mobile portion was found through interpolation between 2005 and 2007. Carbon Monoxide (CO) National Emissions Totals (thousands of tons) Source Category FUEL COMB. ELEC. UTIL. FUEL COMB. INDUSTRIAL FUEL COMB. OTHER CHEMICAL & ALLIED PRODUCT MFG METALS PROCESSING PETROLEUM & RELATED INDUSTRIES OTHER INDUSTRIAL PROCESSES SOLVENT UTILIZATION 1970 237 770 3,625 3,397 3,644 2,179 620 NA 1975 276 763 3,441 2,204 2,496 2,211 630 NA 1980 322 750 6,230 2,151 2,246 1,723 830 NA 1985 291 670 7,525 1,845 2,223 462 694 2 STORAGE & TRANSPORT WASTE DISPOSAL & RECYCLING HIGHWAY VEHICLES OFF-HIGHWAY MISCELLANEOUS NA 7,059 163,231 11,371 7,909 NA 3,230 153,555 14,329 5,263 NA 2,300 143,827 16,685 8,344 49 1,941 134,187 19,029 7,927 Total Wildfires Total without wildfires Miscellaneous without wildfires 204,042 6,766 197,276 188,398 4,433 183,965 185,408 7,622 177,786 176,845 7,289 169,556 Stationary fuel combustion Industrial and other processes Transportation Miscellaneous Total 4,632 16,899 174,602 7,909 204,042 4,480 10,771 167,884 5,263 188,398 7,302 9,250 160,512 8,344 185,408 8,486 7,216 153,216 7,927 176,845 1990 363 879 4,269 1,183 2,640 333 537 5 1991 349 920 4,587 1,127 2,571 345 548 5 1992 350 955 4,849 1,112 2,496 371 544 5 1993 363 1,043 4,181 1,093 2,536 371 594 5 1994 370 1,041 4,108 1,171 2,475 338 600 5 1995 372 1,056 4,506 1,223 2,380 348 624 6 1996 408 1,188 2,741 1,053 1,599 354 561 1 1997 423 1,162 2,742 1,071 1,710 367 582 2 76 1,079 110,255 21,447 11,122 28 1,116 104,980 21,934 8,618 17 1,138 99,705 22,419 6,934 51 1,248 94,431 22,904 7,082 24 1,225 89,156 23,389 9,656 25 1,185 83,881 23,874 7,298 70 2,904 78,606 24,358 15,016 71 2,948 75,849 23,668 7,316 154,188 10,583 143,605 147,128 10,583 136,545 140,895 6,389 134,506 135,902 6,537 129,365 133,558 9,089 124,469 126,778 6,705 120,073 128,858 14,502 114,356 117,910 6,793 111,117 5,511 5,853 131,702 11,122 154,188 5,856 5,740 126,914 8,618 147,128 6,154 5,683 122,124 6,934 140,895 5,587 5,898 117,335 7,082 135,902 5,519 5,838 112,545 9,656 133,558 5,934 5,791 107,755 7,298 126,778 4,336 6,541 102,964 15,016 128,858 4,327 6,750 99,517 7,316 117,910 1998 451 1,151 2,727 1,081 1,702 366 590 2 1999 496 1,213 3,829 350 1,255 159 571 52 2000 484 1,219 3,081 361 1,295 161 592 51 2001 485 1,253 3,088 372 1,380 162 615 50 2002 657 1,267 3,550 284 987 357 490 2 2003 653 1,231 3,478 259 934 355 505 2 2004 648 1,192 3,405 233 882 353 520 2 2005 643 1,152 3,331 208 829 351 534 2 72 3,121 73,244 23,689 7,184 163 3,019 68,708 23,316 11,410 169 1,849 68,061 24,178 12,964 178 1,851 63,476 24,677 8,676 118 1,594 51,611 22,624 18,493 114 1,581 48,683 22,384 19,415 111 1,568 45,754 22,144 20,336 107 1,554 42,826 21,903 15,106 115,380 6,654 108,726 114,541 10,508 104,033 114,467 12,049 102,418 106,262 7,744 98,518 102,033 14,052 87,981 4,442 99,593 14,052 85,541 5,363 97,147 14,052 83,096 6,285 88,546 7,900 80,646 7,206 4,329 6,934 96,933 7,184 115,380 5,538 5,569 92,024 11,410 114,541 4,784 4,479 92,239 12,964 114,467 4,825 4,609 88,153 8,676 106,262 5,474 3,830 74,235 18,493 102,033 5,361 3,750 71,066 19,415 99,593 5,244 3,669 67,898 20,336 97,147 5,125 3,586 64,729 15,106 88,546 2006 673 1,067 3,137 200 833 322 498 4 2007 703 983 2,943 191 836 293 463 5 2008 728 898 2,749 183 840 265 426 7 2009 747 919 2,783 178 815 401 397 5 2010 766 940 2,818 173 791 536 367 4 2011 784 961 2,852 167 766 672 337 2 2012 766 950 2,704 155 714 682 419 2 2013 748 938 2,556 142 662 692 502 2 78 1,495 40,046 20,373 17,111 48 1,437 37,266 18,842 19,116 18 1,378 33,156 17,884 21,121 21 1,289 27,437 15,921 21,839 24 1,200 28,242 15,353 22,558 27 1,111 27,355 14,949 23,777 21 1,396 26,382 14,387 23,217 14 1,682 25,409 13,824 22,656 85,837 7,900 77,937 9,211 83,128 7,900 75,228 11,216 79,655 12,200 67,455 8,921 72,753 12,200 60,552 9,639 73,771 12,200 61,571 10,357 73,762 12,701 61,060 11,076 71,795 12,701 59,093 10,515 69,827 12,701 57,126 9,955 4,877 3,430 60,419 17,111 85,837 4,629 3,274 56,108 19,116 83,128 4,376 3,117 51,041 21,121 79,655 4,450 3,106 43,358 21,839 72,753 4,524 3,094 43,596 22,558 73,771 4,598 3,083 42,304 23,777 73,762 4,420 3,389 40,769 23,217 71,795 4,242 3,695 39,234 22,656 69,827 2014 731 926 2,408 129 610 702 584 2 2015 731 926 2,408 129 610 702 584 2 2016 731 926 2,408 129 610 702 584 2 2017 731 926 2,408 129 610 702 584 2 8 1,967 24,437 13,262 19,882 8 1,967 23,359 13,264 19,882 8 1,967 20,741 13,266 19,882 8 1,967 18,893 13,269 19,882 65,646 10,487 55,159 9,395 64,571 10,487 54,084 9,395 61,955 10,487 51,468 9,395 60,109 10,487 49,622 9,395 4,065 4,001 37,698 19,882 65,646 4,065 4,001 36,623 19,882 64,571 4,065 4,001 34,007 19,882 61,955 4,065 4,001 32,162 19,882 60,109 Nitrogen Oxide (NOx) National Emissions Totals (thousands of tons) Source Category FUEL COMB. ELEC. UTIL. FUEL COMB. INDUSTRIAL FUEL COMB. OTHER CHEMICAL & ALLIED PRODUCT MFG METALS PROCESSING PETROLEUM & RELATED INDUSTRIES OTHER INDUSTRIAL PROCESSES SOLVENT UTILIZATION 1970 4,900 4,325 836 271 77 240 187 0 1975 5,694 4,007 785 221 73 63 182 0 1980 7,024 3,555 741 213 65 72 205 0 1985 6,127 3,209 712 262 87 124 327 2 STORAGE & TRANSPORT WASTE DISPOSAL & RECYCLING HIGHWAY VEHICLES OFF-HIGHWAY MISCELLANEOUS 0 440 12,624 2,652 330 0 159 12,061 2,968 165 0 111 11,493 3,353 248 2 87 10,932 3,576 310 Total Wildfires Total without wildfires Miscellaneous without wildfires 26,882 NA 26,883 26,378 NA 26,377 27,080 NA 27,079 25,757 NA 25,757 Stationary fuel combustion Industrial and other processes Transportation Miscellaneous Total 10,061 1,215 15,276 330 26,882 10,486 698 15,029 165 26,378 11,320 666 14,846 248 27,080 10,048 891 14,508 310 25,757 1990 6,663 3,035 1,196 168 97 153 378 1 1991 6,519 2,979 1,281 165 76 121 352 2 1992 6,504 3,071 1,353 163 81 148 361 3 1993 6,651 3,151 1,308 155 83 123 370 3 1994 6,565 3,147 1,303 160 91 117 389 3 1995 6,384 3,144 1,298 158 98 110 399 3 1996 6,164 3,151 1,197 125 83 139 433 2 1997 6,276 3,101 1,177 127 89 143 460 3 3 91 9,592 3,781 369 6 95 9,449 3,849 286 5 96 9,306 3,915 255 5 123 9,162 3,981 241 5 114 9,019 4,047 390 6 99 8,876 4,113 267 15 153 8,733 4,179 412 16 157 8,792 4,178 187 25,527 362 25,165 7 25,180 247 24,933 39 25,261 234 25,027 21 25,356 234 25,122 7 25,350 382 24,968 8 24,955 258 24,697 9 24,787 405 24,382 7 24,705 179 24,526 7 10,894 891 13,373 369 25,527 10,779 817 13,298 286 25,180 10,928 857 13,221 255 25,261 11,110 862 13,143 241 25,356 11,015 879 13,066 390 25,350 10,826 873 12,989 267 24,955 10,513 950 12,912 412 24,787 10,554 994 12,970 187 24,705 1998 6,232 3,050 1,101 129 89 143 467 3 1999 5,721 2,709 768 102 86 120 451 4 2000 5,330 2,723 766 105 89 122 479 4 2001 4,917 2,757 779 107 94 124 504 4 2002 4,709 2,041 738 70 69 354 429 7 2003 4,340 1,971 736 67 68 357 448 6 2004 3,969 1,897 734 64 67 355 467 5 2005 3,792 1,820 730 61 66 354 482 4 16 163 8,619 4,156 179 14 162 8,371 4,084 251 15 129 8,394 4,167 276 16 130 7,774 4,156 184 19 111 10,337 4,864 211 18 122 9,671 4,667 178 17 134 9,004 4,471 146 16 146 8,338 4,275 271 24,348 172 24,176 8 22,845 236 22,609 15 22,598 263 22,335 13 21,549 171 21,378 13 23,959 114 23,845 97 22,651 114 22,537 65 21,331 114 21,218 32 20,355 94 20,261 177 10,383 1,010 12,776 179 24,348 9,198 940 12,456 251 22,845 8,819 943 12,560 276 22,598 8,454 981 11,930 184 21,549 7,488 1,059 15,201 211 23,959 7,047 1,087 14,338 178 22,651 6,600 1,109 13,475 146 21,331 6,343 1,129 12,612 271 20,355 2006 3,588 1,681 682 59 71 379 461 5 2007 3,383 1,543 633 57 75 405 440 6 2008 3,144 1,399 585 55 79 431 416 6 2009 2,818 1,352 575 54 76 516 395 4 2010 2,458 1,305 565 53 73 601 374 3 2011 2,090 1,258 555 51 71 685 353 1 2012 1,965 1,220 550 50 70 696 345 1 2013 1,839 1,182 546 49 70 706 338 1 14 130 7,992 3,898 268 12 113 7,646 3,521 265 10 97 6,941 3,485 262 13 92 6,206 3,391 278 16 88 5,701 3,315 295 20 83 5,870 3,081 399 15 92 5,540 2,947 388 10 101 5,210 2,813 377 19,227 94 19,133 174 18,099 94 18,005 171 16,909 96 16,813 165 15,772 96 15,675 182 14,846 96 14,750 198 14,519 185 14,334 215 13,881 185 13,696 204 13,243 185 13,058 193 5,951 1,118 11,890 268 19,227 5,559 1,108 11,167 265 18,099 5,127 1,094 10,426 262 16,909 4,745 1,151 9,598 278 15,772 4,328 1,207 9,017 295 14,846 3,904 1,264 8,952 399 14,519 3,735 1,270 8,487 388 13,881 3,567 1,276 8,023 377 13,243 2014 1,770 1,143 541 47 70 717 330 1 2015 1,465 1,143 541 47 70 717 330 1 2016 1,288 1,143 541 47 70 717 330 1 2017 1,155 1,143 541 47 70 717 330 1 6 110 4,879 2,680 301 6 110 4,445 2,673 301 6 110 4,090 2,666 301 6 110 3,695 2,660 301 12,596 119 12,476 181 11,849 119 11,730 181 11,310 119 11,191 181 10,776 119 10,657 181 3,455 1,282 7,559 301 12,596 3,149 1,282 7,118 301 11,849 2,972 1,282 6,756 301 11,310 2,839 1,282 6,355 301 10,776 Particulate Matter 10 Micrometers in Diameter and Smaller (PM10) National Emissions Totals (thousands of tons) Source Category FUEL COMB. ELEC. UTIL. FUEL COMB. INDUSTRIAL FUEL COMB. OTHER CHEMICAL & ALLIED PRODUCT MFG METALS PROCESSING PETROLEUM & RELATED INDUSTRIES OTHER INDUSTRIAL PROCESSES SOLVENT UTILIZATION STORAGE & TRANSPORT WASTE DISPOSAL & RECYCLING HIGHWAY VEHICLES OFF-HIGHWAY MISCELLANEOUS Total Miscellaneous Total without miscellaneous Wildfires Total without wildfires Miscellaneous without wildfires 1970 1,775 641 455 235 1,316 286 5,832 1975 1,191 564 492 127 825 179 2,572 1980 879 679 887 148 622 138 1,846 1985 280 247 1,009 58 220 63 611 NA NA 999 480 164 839 NA NA 371 456 209 569 NA NA 273 432 257 852 2 107 278 408 304 37,736 13,022 839 12,183 7,555 569 6,986 7,013 852 6,161 41,323 37,736 3,587 1990 295 270 631 77 214 55 583 1991 257 233 657 68 251 43 520 1992 257 243 683 71 250 43 506 1993 279 257 588 66 181 38 501 1994 273 270 570 76 184 38 495 1995 268 302 610 67 212 40 511 1996 289 238 380 63 144 29 325 1997 295 232 381 64 151 30 336 4 102 271 387 328 24,536 5 101 276 370 331 24,233 5 117 278 354 333 23,958 6 114 334 337 335 24,328 6 106 313 321 337 25,619 6 109 287 304 339 22,765 6 81 454 287 341 20,219 6 83 468 274 337 20,253 27,753 24,536 3,217 27,345 24,233 3,112 27,098 23,958 3,140 27,364 24,328 3,036 28,608 25,619 2,989 25,820 22,765 3,055 22,857 20,219 2,638 22,909 20,253 2,656 1998 229 229 378 65 150 30 338 1999 723 317 421 54 136 38 365 2000 687 320 465 55 140 38 378 2001 696 330 467 57 148 39 394 2002 620 339 491 40 81 25 976 2003 622 345 482 38 82 26 988 2004 625 348 473 37 83 27 999 2005 627 350 464 36 83 28 1,009 6 84 488 256 332 20,307 17 83 468 241 336 20,186 17 84 362 230 322 20,649 18 88 363 212 317 20,580 8 60 289 402 362 17,883 8 59 289 395 343 17,986 8 59 289 389 323 18,089 8 58 289 383 304 17,662 22,893 20,307 2,585 23,383 20,186 3,198 23,747 20,649 3,098 23,708 20,580 3,127 21,576 17,883 3,693 1,335 20,241 16,548 21,664 17,986 3,679 1,335 20,330 16,651 21,749 18,089 3,660 1,335 20,414 16,754 21,302 17,662 3,639 805 20,497 16,857 2006 556 297 439 33 82 29 1,032 2007 484 243 414 29 82 29 1,055 2008 409 189 388 26 81 30 1,076 2009 366 218 400 25 75 32 973 2010 323 246 412 23 69 33 870 2011 280 275 424 22 63 35 766 2012 265 278 399 21 61 35 736 2013 249 282 373 20 60 34 706 7 56 272 376 283 17,940 6 54 255 370 263 18,218 5 51 238 332 260 18,496 4 52 222 305 242 18,286 4 52 207 279 228 18,076 4 52 192 371 223 18,015 4 49 220 349 211 17,346 4 46 249 326 199 16,677 21,401 17,940 3,461 805 20,596 17,135 21,501 18,218 3,283 805 20,696 17,413 21,580 18,496 3,084 1,178 20,402 17,318 21,199 18,286 2,913 1,178 20,021 17,108 20,823 18,076 2,747 1,178 19,645 16,899 20,723 18,015 2,708 1,326 19,397 16,689 19,974 17,346 2,628 1,326 18,648 16,020 19,226 16,677 2,549 1,326 17,900 15,351 2014 234 286 348 19 58 33 677 2015 234 286 348 19 58 33 677 2016 234 286 348 19 58 33 677 2017 4 43 277 304 187 15,727 4 43 277 288 186 15,727 4 43 277 276 186 15,727 4 43 277 261 185 15,727 18,198 15,727 2,470 1,046 17,152 14,681 18,180 15,727 2,453 1,046 17,135 14,681 18,167 15,727 2,440 1,046 17,122 14,681 18,152 15,727 2,425 1,046 17,107 14,681 234 286 348 19 58 33 677 Particulate Matter 2.5 Micrometers in Diameter and Smaller (PM2.5) National Emissions Totals (thousands of tons) Source Category FUEL COMB. ELEC. UTIL. FUEL COMB. INDUSTRIAL FUEL COMB. OTHER CHEMICAL & ALLIED PRODUCT MFG METALS PROCESSING PETROLEUM & RELATED INDUSTRIES OTHER INDUSTRIAL PROCESSES 1990 121 177 611 47 157 27 284 1991 105 151 638 43 197 24 264 1992 106 159 662 45 198 24 259 1993 112 172 568 41 125 22 260 SOLVENT UTILIZATION STORAGE & TRANSPORT WASTE DISPOSAL & RECYCLING HIGHWAY VEHICLES OFF-HIGHWAY MISCELLANEOUS 4 42 234 323 300 5,233 4 42 238 308 303 5,003 5 50 239 292 305 4,854 6 46 288 276 307 4,926 Total Miscellaneous 7,560 5,233 2,327 7,320 5,003 2,317 7,198 4,854 2,344 7,149 4,926 2,223 Total without miscellaneous Wildfires Total without wildfires Miscellaneous without wildfires 1994 108 183 550 49 125 22 256 1995 107 203 589 42 134 22 256 1996 157 152 356 39 101 17 180 1997 161 148 356 39 106 17 186 1998 130 147 354 40 105 17 189 1999 621 258 400 45 115 27 245 2000 587 260 447 46 118 27 254 2001 584 267 449 47 125 28 264 6 43 271 261 309 5,359 5 42 247 245 311 4,726 5 30 427 229 313 4,721 5 31 439 216 309 4,244 5 31 459 199 304 4,280 17 41 440 184 307 4,511 17 42 333 173 295 4,688 17 44 334 157 290 4,390 7,542 5,359 2,183 6,929 4,726 2,203 6,724 4,721 2,003 6,256 4,244 2,012 6,261 4,280 1,981 7,211 4,511 2,700 7,288 4,688 2,600 6,996 4,390 2,606 2002 506 178 445 30 54 18 354 2003 509 184 437 30 56 19 365 2004 513 189 429 29 58 20 376 2005 516 194 422 29 60 21 387 2006 448 178 408 26 61 22 372 2007 379 162 394 23 62 22 357 2008 309 146 380 20 63 23 341 2009 275 171 391 19 58 25 319 7 23 268 330 338 3,256 7 24 268 322 321 3,346 7 24 267 315 304 3,437 7 25 266 308 287 3,069 6 25 246 295 267 3,383 5 24 226 283 247 3,697 4 24 206 253 236 4,011 4 23 192 224 225 4,061 5,805 3,256 2,549 1,131 4,674 2,125 5,888 3,346 2,542 1,131 4,757 2,215 5,970 3,437 2,533 1,131 4,838 2,306 5,592 3,069 2,523 673 4,919 2,396 5,736 3,383 2,353 673 5,063 2,710 5,881 3,697 2,184 673 5,208 3,024 6,014 4,011 2,003 999 5,016 3,012 5,988 4,061 1,927 999 4,989 3,062 2010 240 197 403 18 53 27 298 2011 205 223 415 17 48 29 277 2012 198 223 391 16 47 29 273 2013 190 224 367 15 46 29 269 2014 182 224 343 14 44 29 265 2015 182 224 343 14 44 29 265 2016 182 224 343 14 44 29 265 2017 182 224 343 14 44 29 265 4 22 178 199 213 4,111 4 21 165 198 210 4,288 4 20 187 186 199 4,172 4 18 208 175 187 4,056 4 17 230 163 176 3,701 4 17 230 146 175 3,701 4 17 230 132 174 3,701 4 17 230 116 174 3,701 5,964 4,111 1,853 999 4,965 3,113 6,100 4,288 1,812 1,125 4,974 3,163 5,943 4,172 1,772 1,125 4,818 3,047 5,787 4,056 1,731 1,125 4,662 2,931 5,392 3,701 1,691 886 4,506 2,814 5,374 3,701 1,673 886 4,488 2,814 5,359 3,701 1,658 886 4,473 2,814 5,343 3,701 1,642 886 4,456 2,814 Sulfur Dioxide (SO2) National Emissions Totals (thousands of tons) Source Category FUEL COMB. ELEC. UTIL. FUEL COMB. INDUSTRIAL FUEL COMB. OTHER CHEMICAL & ALLIED PRODUCT MFG METALS PROCESSING PETROLEUM & RELATED INDUSTRIES OTHER INDUSTRIAL PROCESSES SOLVENT UTILIZATION 1970 17,398 4,568 1,490 591 4,775 881 846 NA 1975 18,268 3,310 1,082 367 2,849 727 740 NA 1980 17,469 2,951 971 280 1,842 734 918 NA 1985 16,272 3,169 579 456 1,042 505 425 1 NA 8 273 278 110 NA 46 334 301 20 NA 33 394 323 11 4 34 455 354 11 Total Wildfires Total without wildfires Miscellaneous without wildfires 31,218 NA 31,218 110 28,044 NA 28,044 20 25,926 NA 25,926 11 23,307 NA 23,307 11 Stationary fuel combustion Industrial and other processes Transportation Miscellaneous Total 23,456 7,101 551 110 31,218 22,660 4,729 635 20 28,044 21,391 3,807 717 11 25,926 20,020 2,467 809 11 23,307 STORAGE & TRANSPORT WASTE DISPOSAL & RECYCLING HIGHWAY VEHICLES OFF-HIGHWAY MISCELLANEOUS 1990 15,909 3,550 831 297 726 430 399 0 1991 15,784 3,256 755 280 612 378 396 0 1992 15,416 3,292 784 278 615 416 396 1 1993 15,189 3,284 772 269 603 383 392 1 1994 14,889 3,218 780 275 562 379 398 1 1995 12,080 3,357 793 286 530 369 403 1 1996 12,767 2,849 636 255 389 335 386 1 1997 13,195 2,805 648 259 407 344 409 1 7 42 503 371 12 10 44 469 379 12 9 44 436 385 10 5 71 402 392 10 2 59 369 399 15 2 47 335 406 10 5 32 302 413 15 5 33 304 422 7 23,077 12 23,065 0 22,375 12 22,363 0 22,082 9 22,073 1 21,773 9 21,764 1 21,346 14 21,332 1 18,619 10 18,609 0 18,385 15 18,370 0 18,840 6 18,834 0 20,290 1,901 874 12 23,077 19,795 1,720 848 12 22,375 19,492 1,759 821 10 22,082 19,245 1,724 794 10 21,773 18,887 1,676 768 15 21,346 16,230 1,638 741 10 18,619 16,252 1,403 715 15 18,385 16,649 1,459 725 7 18,840 1998 13,416 2,740 586 261 405 342 415 1 1999 12,583 2,135 620 325 304 312 382 1 2000 11,396 2,139 628 338 313 316 410 1 2001 10,850 2,243 642 342 332 319 429 1 2002 10,436 1,786 579 259 213 257 325 0 2003 10,343 1,780 581 257 200 237 337 0 2004 10,250 1,763 582 254 187 218 349 0 2005 10,404 1,735 582 251 175 199 361 0 5 34 300 432 6 6 34 300 475 67 6 34 260 437 70 7 35 248 440 44 5 26 286 725 135 4 27 248 654 140 3 28 210 582 145 3 28 172 510 126 18,944 6 18,939 0 17,545 67 17,478 0 16,347 69 16,278 0 15,932 44 15,888 0 15,032 80 14,952 55 14,808 80 14,728 60 14,571 80 14,491 65 14,546 56 14,490 70 16,743 1,464 732 6 18,944 15,338 1,364 776 67 17,545 14,163 1,418 697 70 16,347 13,735 1,464 688 44 15,932 12,801 1,085 1,011 135 15,032 12,704 1,062 901 140 14,808 12,595 1,040 792 145 14,571 12,721 1,017 682 126 14,546 2006 9,546 1,514 485 229 175 182 325 0 2007 8,687 1,293 388 207 176 166 289 1 2008 7,792 1,069 291 185 177 149 253 1 2009 6,762 938 267 165 166 139 231 1 2010 5,696 807 243 146 155 129 210 0 2011 4,625 676 219 127 144 119 188 0 2012 3,359 629 184 125 131 114 181 0 2013 3,285 581 150 124 118 109 174 0 4 26 107 399 130 5 24 42 287 135 6 21 39 201 139 7 20 36 207 150 8 18 37 121 161 9 17 29 127 198 7 22 29 108 190 5 27 29 88 182 13,123 56 13,067 74 11,699 56 11,643 79 10,324 70 10,254 69 9,089 70 9,019 80 7,732 70 7,662 91 6,479 96 6,383 102 5,079 96 4,984 94 4,874 96 4,778 87 11,544 942 506 130 13,123 10,368 867 329 135 11,699 9,152 792 240 139 10,324 7,967 730 243 150 9,089 6,746 667 158 161 7,732 5,520 605 157 198 6,479 4,171 581 137 190 5,079 4,017 558 117 182 4,874 2014 3,244 534 116 123 105 104 167 0 2015 2,255 534 116 123 105 104 167 0 2016 1,530 534 116 123 105 104 167 0 2017 1,385 534 116 123 105 104 167 0 3 32 28 69 150 3 32 27 69 150 3 32 28 69 150 3 32 27 69 150 4,675 71 4,604 79 3,685 71 3,614 79 2,961 71 2,889 79 2,815 71 2,744 79 3,893 534 97 150 4,675 2,905 534 96 150 3,685 2,180 534 96 150 2,961 2,035 534 96 150 2,815 Volatile Organic Compounds (VOC) National Emissions Totals (thousands of tons) Source Category FUEL COMB. ELEC. UTIL. FUEL COMB. INDUSTRIAL FUEL COMB. OTHER CHEMICAL & ALLIED PRODUCT MFG METALS PROCESSING PETROLEUM & RELATED INDUSTRIES OTHER INDUSTRIAL PROCESSES SOLVENT UTILIZATION 1970 30 150 541 1,341 394 1,194 270 7,174 1975 40 150 470 1,351 336 1,342 235 5,651 1980 45 157 848 1,595 273 1,440 237 6,584 1985 32 134 1,403 881 76 703 390 5,699 STORAGE & TRANSPORT WASTE DISPOSAL & RECYCLING HIGHWAY VEHICLES OFF-HIGHWAY MISCELLANEOUS 1,954 1,984 16,910 1,616 1,101 2,181 984 15,392 1,917 716 1,975 758 13,869 2,192 1,134 1,747 979 12,354 2,439 566 Total Wildfires Total without wildfires Miscellaneous without wildfires 34,659 917 33,742 184 30,765 587 30,178 129 31,107 1,024 30,083 110 27,403 465 26,938 101 Stationary fuel combustion Industrial and other processes Transportation Miscellaneous Total 721 14,311 18,526 1,101 34,659 660 12,080 17,309 716 30,765 1,050 12,862 16,061 1,134 31,107 1,569 10,475 14,793 566 27,403 1990 47 182 776 634 122 611 401 5,750 1991 44 196 835 710 123 640 391 5,782 1992 44 187 884 715 124 632 414 5,901 1993 45 186 762 701 124 649 442 6,016 1994 45 196 748 691 126 647 438 6,162 1995 44 206 823 660 125 642 450 6,183 1996 50 179 893 388 73 477 435 5,477 1997 52 175 893 388 78 487 438 5,621 1,490 986 9,388 2,662 1,059 1,532 999 8,860 2,709 756 1,583 1,010 8,332 2,754 486 1,600 1,046 7,804 2,799 556 1,629 1,046 7,277 2,845 720 1,652 1,067 6,749 2,890 551 1,294 509 6,221 2,935 1,940 1,328 518 5,985 2,752 816 24,108 983 23,125 76 23,577 678 22,899 78 23,066 407 22,659 79 22,730 478 22,252 78 22,570 638 21,932 82 22,042 464 21,578 87 20,871 1,870 19,001 71 19,530 744 18,786 72 1,005 9,994 12,050 1,059 24,108 1,075 10,177 11,569 756 23,577 1,115 10,379 11,086 486 23,066 993 10,578 10,603 556 22,730 989 10,739 10,122 720 22,570 1,073 10,779 9,639 551 22,042 1,122 8,653 9,156 1,940 20,871 1,120 8,857 8,737 816 19,530 1998 56 174 889 394 78 485 443 5,149 1999 54 172 919 251 66 457 438 5,036 2000 62 173 949 254 67 428 454 4,831 2001 61 176 950 262 71 441 420 5,012 2002 49 152 1,523 249 46 601 442 4,278 2003 49 146 1,211 245 47 588 447 4,267 2004 49 139 900 240 48 575 452 4,256 2005 48 133 589 235 49 562 457 4,245 1,327 535 5,859 2,673 718 1,237 487 5,681 2,682 791 1,176 415 5,325 2,644 733 1,192 420 4,952 2,622 532 1,484 395 4,013 3,086 3,970 1,487 395 3,823 3,013 4,193 1,473 394 3,633 2,939 4,415 1,442 392 3,443 2,866 3,291 18,781 645 18,136 72 18,270 667 17,603 124 17,512 615 16,898 118 17,111 412 16,699 120 20,289 3,213 17,076 757 19,911 3,213 16,697 979 19,514 3,213 16,300 1,201 17,753 1,868 15,885 1,424 1,120 8,411 8,533 718 18,781 1,145 7,972 8,362 791 18,270 1,184 7,626 7,969 733 17,512 1,186 7,818 7,574 532 17,111 1,724 7,496 7,099 3,970 20,289 1,406 7,476 6,836 4,193 19,911 1,088 7,439 6,572 4,415 19,514 769 7,383 6,309 3,291 17,753 2006 47 124 528 186 45 956 425 3,938 2007 45 116 467 137 41 1,350 394 3,630 2008 44 107 406 88 37 1,744 362 3,299 2009 43 109 430 86 36 2,088 351 3,136 2010 42 110 453 85 35 2,431 340 2,974 2011 41 112 476 83 34 2,774 329 2,811 2012 40 111 441 81 32 2,898 335 2,891 2013 39 110 407 79 31 3,021 340 2,972 1,360 323 3,464 2,746 3,759 1,277 254 3,484 2,627 4,227 1,193 185 3,052 2,546 4,695 1,143 167 2,756 2,370 4,879 1,093 150 2,766 2,295 5,062 1,043 132 2,872 2,157 5,290 921 165 2,707 2,025 5,235 798 199 2,542 1,892 5,179 17,902 1,868 16,034 1,892 18,050 1,868 16,183 2,360 17,759 2,847 14,912 1,849 17,593 2,847 14,747 2,032 17,835 2,847 14,988 2,216 18,154 2,891 15,263 2,399 17,882 2,891 14,991 2,344 17,610 2,891 14,719 2,288 699 7,234 6,210 3,759 17,902 628 7,084 6,111 4,227 18,050 557 6,909 5,598 4,695 17,759 581 7,008 5,125 4,879 17,593 605 7,107 5,061 5,062 17,835 628 7,207 5,029 5,290 18,154 592 7,323 4,732 5,235 17,882 556 7,440 4,435 5,179 17,610 2014 38 110 372 77 29 3,145 346 3,052 2015 38 110 372 77 29 3,145 346 3,052 2016 38 110 372 77 29 3,145 346 3,052 2017 38 110 372 77 29 3,145 346 3,052 675 233 2,378 1,760 4,699 675 233 2,231 1,726 4,699 675 233 1,993 1,691 4,699 675 233 1,801 1,656 4,699 16,913 2,466 14,447 2,232 16,731 2,466 14,265 2,232 16,459 2,466 13,993 2,232 16,232 2,466 13,766 2,232 519 7,557 4,138 4,699 16,913 519 7,557 3,956 4,699 16,731 519 7,557 3,684 4,699 16,459 519 7,557 3,457 4,699 16,232 Ammonia Emissions (NH3) National Emissions Totals (thousands of tons) Source Category FUEL COMB. ELEC. UTIL. FUEL COMB. INDUSTRIAL FUEL COMB. OTHER CHEMICAL & ALLIED PRODUCT MFG METALS PROCESSING PETROLEUM & RELATED INDUSTRIES OTHER INDUSTRIAL PROCESSES 1990 0 17 8 183 6 43 38 1991 0 17 8 183 6 43 38 1992 0 17 8 183 6 43 39 1993 0 18 8 183 6 43 39 SOLVENT UTILIZATION STORAGE & TRANSPORT WASTE DISPOSAL & RECYCLING HIGHWAY VEHICLES OFF-HIGHWAY MISCELLANEOUS NA 0 82 155 31 3,757 NA 0 86 169 35 3,799 NA 0 89 182 35 3,841 NA 0 93 195 36 3,897 Total Miscellaneous Total without miscellaneous Wildfires Total without wildfires Miscellaneous without wildfires 4,320 3,757 563 4,384 3,799 585 4,443 3,841 602 4,518 3,897 621 Stationary fuel combustion Industrial and other processes Transportation Miscellaneous Total 25 352 186 3,757 4,320 25 356 204 3,799 4,384 25 360 217 3,841 4,443 26 364 231 3,897 4,518 1994 0 18 8 183 6 43 40 1995 0 18 8 183 6 43 40 1996 6 34 7 123 5 16 43 1997 6 33 7 125 5 17 45 1998 8 33 6 130 5 17 45 1999 11 31 8 25 2 9 48 2000 11 31 8 26 2 10 50 2001 11 31 8 27 2 10 52 NA 0 93 209 36 3,953 NA 0 93 222 37 4,009 0 1 84 236 34 4,138 0 1 84 265 34 4,195 0 1 86 256 35 4,318 0 5 82 267 3 4,366 0 5 83 275 3 4,403 0 5 85 278 3 3,177 4,589 3,953 636 4,659 4,009 650 4,727 4,138 589 4,817 4,195 622 4,940 4,318 622 4,857 4,366 491 4,907 4,403 504 3,689 3,177 512 26 365 245 3,953 4,589 26 365 259 4,009 4,659 47 272 270 4,138 4,727 46 277 299 4,195 4,817 47 284 291 4,318 4,940 50 171 270 4,366 4,857 50 176 278 4,403 4,907 50 181 281 3,177 3,689 2002 29 17 18 23 3 3 177 2003 28 18 18 21 3 2 178 2004 27 19 18 20 3 2 179 2005 25 20 18 18 3 1 179 2006 26 17 33 18 2 1 138 2007 27 15 48 18 2 1 97 2008 28 13 63 19 2 1 56 2009 27 13 64 20 2 1 49 0 1 26 155 3 3,539 0 1 26 152 3 3,554 0 1 27 149 3 3,570 0 1 28 146 3 3,490 0 2 41 146 3 3,648 0 4 54 147 3 3,805 0 5 67 138 4 3,963 1 5 57 133 3 3,940 3,994 0 4,005 0 4,016 0 3,932 0 4,077 0 4,222 0 4,359 0 4,315 0 3,994 3,539 455 225 3,769 3,314 4,005 3,554 451 225 3,780 3,330 4,016 3,570 446 225 3,791 3,345 3,932 3,490 441 130 3,802 3,361 4,077 3,648 429 130 3,947 3,518 4,222 3,805 417 130 4,092 3,675 4,359 3,963 397 198 4,161 3,765 4,315 3,940 375 198 4,117 3,742 64 233 158 3,539 3,994 64 232 155 3,554 4,005 63 231 152 3,570 4,016 63 230 149 3,490 3,932 77 204 149 3,648 4,077 90 177 149 3,805 4,222 104 151 141 3,963 4,359 104 135 137 3,940 4,315 2010 26 13 65 22 1 1 41 2011 25 13 66 23 1 1 34 2012 25 14 66 23 1 1 30 2013 25 15 67 23 1 2 26 2014 26 15 67 22 1 2 22 2015 26 15 67 22 1 2 22 2016 26 15 67 22 1 2 22 2017 26 15 67 22 1 2 22 1 6 46 128 3 3,917 1 6 36 124 3 3,899 1 6 34 119 3 3,700 1 6 32 114 3 3,500 1 5 30 109 3 3,269 1 5 30 105 3 3,269 1 5 30 102 3 3,269 1 5 30 99 3 3,269 4,271 0 4,232 0 4,023 0 3,813 0 3,572 0 4,271 3,917 354 198 4,073 3,719 4,232 3,899 333 203 4,029 3,696 4,023 3,700 323 203 3,819 3,497 3,813 3,500 313 203 3,610 3,297 3,572 3,269 303 172 3,401 3,098 3,569 3,269 300 172 3,398 3,098 3,566 3,269 297 172 3,394 3,098 3,563 3,269 294 172 3,391 3,098 104 118 132 3,917 4,271 104 102 127 3,899 4,232 106 96 122 3,700 4,023 107 89 117 3,500 3,813 108 83 112 3,269 3,572 108 83 108 3,269 3,569 108 83 105 3,269 3,566 108 83 102 3,269 3,563