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0001 3M Chemolite J Private
1211 A K Steel J Private
0002 A. E. Staly Company J Private
0003 AAT Labs, Inc J Private
1244 ABT Associates, Inc. J Private
1402 ACCUTEST Laboratories J Private
0004 ADEM - Mobile (Field Office) G County Agency
0345 AECOM J Private
1382 ALS Environmental J Private
1409 ALS Laboratories J Private
1452 AMSTech J Private
1317 APPTIS, Inc. J Private
1439 AQMESH CORP. X Contractor
1361 ARA, Atmospheric Research and Analysis J Private
0005 Aeromet Engineering, Inc J Private
0007 Air Pollution Control Division Of Water And Air Resources F State Agency
0008 Air Quality Consultants, Inc J Private
0069 Air Quality Services J Private
0009 Air Resource Specialists, Inc J Private
0010 Air Sciences Incorporated J Private
1300 Air ToxicsLimited, CA J Private
612 Ak Chin Indian Community of Maricopa (Ak Chin) Indian Reservation, AZ T Tribal
0012 Akron Regional Air Pollution Control Agency H City Agency
0013 Al Dept Of Env Mgt F State Agency
830 Alabama-Coushatta Tribe of Texas T Tribal
0015 Alaska Department Of Environmental Conservation F State Agency
0016 Albright College K Institution
0017 Albuquerque Environmental Health Department, Air Quality Division H City Agency
0018 Alexandria Health Department H City Agency
0019 Aleyska Pipeline Service Company J Private
W27 All Indian Pueblo Council/POEP (consortium) T Tribal
0020 Allegany County Health Department G County Agency
0021 Allegheny County,PA Health Department G County Agency
0024 Aluminum Company Of America J Private
0025 Amador County APCD I District Agency
0026 Amarillo Bi-City-County Health Department G County Agency
0027 Amax Coal Company J Private
1224 Ambient Air Services, Inc. J Private
0028 Amerada Hess J Private
1440 Ameren Missouri G County Agency
0029 American Colloid J Private
0030 American Crystal Sugar Company J Private
0031 American Electric Power J Private
0032 American Enka Company J Private
0070 American Municipal Power-Ohio, Inc J Private
0033 American Natural Gas J Private
0034 Amoco J Private
0035 Amoco Oil Company J Private
0037 Anaconda Copper Company J Private
0038 Anaconda Minerals Company J Private
1347 Anadarko, WY J Private
0039 Anderson Air Pollution Control Department H City Agency
0040 Anne Arundel County Department Of Health G County Agency
0041 Antelope Coal Company J Private
0042 Antelope Valley APCD I District Agency
0043 Appalachian Mountain Club J Private
0044 Appalachian State University K Institution
0045 Appleton Health Department H City Agency
0046 Appleton Papers Incorporated J Private
0047 Applied Environmental Consultants, Inc J Private
281 Arapahoe Tribe of The Wind River Reservation, WY T Tribal
1350 Arch Coal Company, WY J Private
0050 Arco J Private
0051 Arco Coal Company J Private
0053 Arizona Department Of Environmental Quality F State Agency
0055 Arkansas Department Of Environmental Quality F State Agency
031 Aroostook Band of Micmac Indians of Maine T Tribal
0060 Artic Health Research Laboratory N Fed Nonmilitary
0061 Asarco J Private
0062 Asarco, Inc J Private
0064 Ashland Oil J Private
1333 Aspen Consulting & Testing J Private
206 Assiniboine & Sioux Tribes of Fort Peck Indian Reservation, MT T Tribal
0066 Associated Electric J Private
0067 Atlantic Gelatine J Private
1221 Atmospheric Analysis & Consulting Inc. Ventura, CA J Private
0071 Atmospheric Research Institute J Private
0068 Austin-Travis County Health Department G County Agency
430 Bad River Band of Lake Superior Tribe of Chippewa Indians of Bad River, WI T Tribal
0073 Baltimore City Health Department H City Agency
0074 Baltimore County Division Of Air Pollution Control G County Agency
0077 Barkley And Dexter Labs, Inc J Private
1417 Basin Electric Power Cooperative J Private
0083 Bath Iron Works, Bath, Me J Private
0082 Battelle J Private
0084 Battelle Memorial Institute J Private
0085 Battelle Northwest Laboratories J Private
0086 Bay Area Air Quality Management District I District Agency
0088 Bearpaw Energy Inc J Private
0091 Beker Industries J Private
1327 Benton Clean Air Authority, WA I District Agency
0093 Berlin Foundry Corporation J Private
0095 Bethlehem Steel Corporation J Private
0099 Billings Laurel Air Quality Technical Committee I District Agency
0102 Bison Engineering J Private
2349 Biswas Information Technology Solutions, Inc. X Contractor
1367 Black Butte Coal Company J Private
1364 Black hills Power J Private
201 Blackfeet Tribe of Blackfeet Indian Reservation of Montana T Tribal
558 Blue Lake Rancheria, CA T Tribal
0105 Boc Flint J Private
0106 Boise Cascade Company J Private
0107 Boliden Intertrade Inc J Private
0109 Borden Chemical Company J Private
0110 Boston Edison Company J Private
0111 Boulder City-County Health Department G County Agency
0112 Bowater Southern Paper Company J Private
0113 Brand S Lumber Company J Private
0114 Braun Intertec J Private
0116 Brevard County Health Department G County Agency
0117 Brevard County Office Of Natural Resources G County Agency
0119 Briess Industries, Inc J Private
0121 Broward County Environmental Protection Department G County Agency
0123 Brown Printing Central J Private
0124 Browning Ferris Industries J Private
0126 Bruce Carter & Associates J Private
0128 Brush-Wellman J Private
1437 Buckskin Mining Company J Private
0130 Buick Motor Division J Private
0133 Burgess & Niple, Limited J Private
0134 Burlington Northern Railroad Company J Private
0136 Business Health Management Environmental Laboratory J Private
0137 Butte County APCD I District Agency
0138 Butte-Silver Bow County Health Department G County Agency
0139 C.T. Main, Inc, Boston, MA J Private
1386 CGI Federal J Private
0164 CH2M Hill J Private
1304 CIRA, Colorado State University K Institution
568 Cabazon Band of Mission Indians, CA T Tribal
0145 California Air Resources Board F State Agency
0146 California Institute Of Technology K Institution
570 Campo Band of Diegueno Mission Indians of Campo Indian Reservation, CA T Tribal
0151 Canton City Health Department Air Pollution Control H City Agency
1307 Capitol Area Council of Governments, TX I District Agency
0152 Carborundum J Private
0153 Carter Mining Company J Private
0154 Cascade City-County Health Department G County Agency
032 Catawba Indian Nation T Tribal
1233 Cenex Harvest States - Superior, WI J Private
1267 Center For Disease Control N Fed Nonmilitary
1326 Center for Lab Science RJ Lee Grp Inc/Columbia Basin Col. K Institution
0158 Centerior Energy J Private
0160 Central Foundry J Private
0162 Central Maine Power Company, Maine Office, Augusta J Private
1453 Central Ohio PQAO F State Agency
0165 Champion International Corporation J Private
0167 Charleston County Health Department G County Agency
0170 Chattanooga-Hamilton County Air Pollution Control G County Agency
0172 Chemetco J Private
0173 Chen Northern Labs J Private
905 Cherokee Nation, Oklahoma T Tribal
W32 Cherokee Nation/ITEC (consortium) T Tribal
1334 Chester LabNet. J Private
0177 Chev Saginaw Metals Casting Plant J Private
0178 Chevrolet Motor Division J Private
0179 Chevron J Private
0181 Chicago Department Of Consumer Services H City Agency
1420 Chieftain Sand J Private
1396 Chippewa Sand Company, LLC J Private
907 Choctaw Nation of Oklahoma T Tribal
0183 Cianbro/Dragon Cement, Thomaston J Private
2350 Ciner Wyoming LLC J Private
1339 Citation Corp., WI J Private
0223 City University of New York, CUNY K Institution
1358 City of Aspen, CO H City Agency
0188 City of Bridgeport Department of Health H City Agency
0189 City of Bristol Department of Health H City Agency
0191 City of Cincinnati Division of Air Pollution Control H City Agency
0192 City of Cleveland Division of Air Pollution Control H City Agency
0193 City of Colorado Springs H City Agency
0195 City of Columbus Division of Electricity H City Agency
0196 City of Dallas Air Pollution Control Section H City Agency
0335 City of El Paso Environmental Services Department G County Agency
1360 City of Frisco H City Agency
0197 City of Ft Collins, Colorado Environmental Health H City Agency
0199 City of Greenwich Department of Health H City Agency
0200 City of Houston Health Department H City Agency
0300 City of Huntsville, Div of Natural Resources H City Agency
0544 City of Jacksonville Environmental Quality Division H City Agency
0201 City of Meriden Department of Health H City Agency
0202 City of Middletown Department of Health H City Agency
0204 City of Milford Department of Health H City Agency
0208 City of New Britain Department of Health H City Agency
0210 City of New York Department of Environmental Protection H City Agency
0213 City of Richfield H City Agency
0214 City of Richmond, Bureau of Air Pollution Control H City Agency
0217 City of Stamford Department of Health H City Agency
0220 City of Toledo, Environmental Services Division H City Agency
0224 City-County Of Denver Health Department G County Agency
0225 Clark County, IN Health Department G County Agency
0226 Clark County, NV DAQEM G County Agency
0229 Cleveland Air Pollution Control Agency H City Agency
0230 Cleveland County Air Pollution Control Agency G County Agency
0233 Cleveland-Cliffs Iron Company J Private
181 Coeur D'Alene Tribe of The Coeur D'Alene Reservation, ID T Tribal
0238 Coldwater Board Of Public Utilities J Private
0239 College of Staten Island K Institution
1225 Collier County Pollution Control Department G County Agency
1380 Colorado Bureau of Land Management F State Agency
0240 Colorado Department of Public Health And Environment F State Agency
1389 Colorado State University J Private
0244 Columbia Falls Aluminum J Private
0245 Columbia-Williamette Air Pollution Authority I District Agency
0247 Colusa County APCD I District Agency
1315 Computer Science Corporation J Private
0248 Con Agra J Private
203 Confederated Salish & Kootenai Tribes of Flathead Reservation, MT T Tribal
105 Confederated Tribe of Chehalis Reservation, WA T Tribal
101 Confederated Tribe of the Colville Reservation, Washington T Tribal
124 Confederated Tribes & Bands of Yakama Nations, WA T Tribal
143 Confederated Tribes of Umatilla Reservation of Oregon T Tribal
145 Confederated Tribes of Warm Springs Reservation of Oregon T Tribal
152 Confederated Tribes of the Coos, Lower Umpqua and Siuslaw Indians of Oregon T Tribal
0251 Connecticut Department of Environmental Protection F State Agency
0252 Connecticut Department of Health F State Agency
1395 Consci LTD J Private
0254 Consolidated Aluminum Company J Private
0255 Consolidated Papers J Private
0256 Consumers Power Company J Private
0257 Continental Lime J Private
0258 Cook County Department of Environmental Control G County Agency
0259 Cook Inlet Air Resources Management District I District Agency
0261 Cordero Mining Company J Private
0262 Core Laboratories, Inc J Private
0263 Corpus Christi-Nueces County Department of Public Health G County Agency
513 Cortina Indian Rancheria of Wintun Indians, CA T Tribal
1310 County of Suffolk (NY) Division of Environmental Quality G County Agency
0264 Covington-Kenton County Health Department G County Agency
1438 Craig Environmental Consulting X Contractor
0265 Crandon Mining Company J Private
1359 Crocker Nuclear Laboratory, University of California C EPA HQ Effects
202 Crow Tribe of Montana T Tribal
0270 Cyprus Industrial Minerals Company J Private
0271 Cyprus Northshore Mining J Private
1407 DCM Science Laboratory, Inc. J Private
0277 Dairyland Greyhound Park J Private
0278 Dairyland Power Cooperative J Private
0279 Dakota Gasification Company J Private
0280 Dames & Moore, Inc J Private
0281 Dane County Department of Public Works G County Agency
0283 David E. Woodman J Private
0285 Dayton Bureau of Combustion Control H City Agency
0286 Dayton Power and Light J Private
0287 Dayton Regional Air Pollution Control Agency H City Agency
0289 Decker Coal Company J Private
0290 Deerfield Speciality Papers J Private
0294 Delaware Dept Natural Resources and Environmental Control F State Agency
807 Delaware Nation, OK T Tribal
0295 Delco Remy J Private
0296 Delta Chemicals, Searsport J Private
0297 Denver Research Institute J Private
0350 Department of Energy & Environment, District of Columbia I District Agency
0301 Derenzo and Associates J Private
1207 Desert Research Institute J Private
0303 Detroit Edison Company J Private
1450 Detroit Water and Sewage Department J Private
1391 Devon Energy J Private
1340 Didion Milling, Inc., WI J Private
1305 Dios Dado Environmental Ltd., Selma, TX J Private
1303 Direccion General De Ecoligia Gobierno del Estado de Baja California Z Other
0306 District of Columbia Department of Public Health I District Agency
0307 Division of Environmental Engineering Rennselaer Polytechnic K Institution
0308 Doe Run J Private
1288 Doe Run Buick J Private
1289 Doe Run Glover J Private
1290 Doe Run Herculaneum J Private
1428 Doe Run Herculaneum Lab J Private
0311 Doug Yanggen & Associates J Private
0312 Dow Chemical Company J Private
0313 Dow Corning J Private
0314 Dragon Products, Thomaston J Private
0315 Dry Fork Coal Company J Private
0316 Du Pont J Private
0318 Dubois County Health Department G County Agency
642 Duckwater Shoshone Tribe of Duckwater Reservation, NV T Tribal
1324 Duke Energy J Private
0320 Duluth Missabe And Iron Range Railway Company J Private
0321 E. Robert Alley & Associates J Private
0322 E.C. Jordon/C-E Envir/Abb J Private
1242 E.H. Pechan J Private
1251 ECR Incorporated J Private
1362 EE-MS, Environmental Engineering Measurement J Private
0340 EMPE J Private
1377 EOG Resources J Private
1368 EPA HQ - OECA A EPA HQ ATM
0363 ER & T Commonwealth Edison J Private
0364 ERCE J Private
1318 EXCEL Management Systems, Inc. J Private
0324 East Chicago Division of Air Quality H City Agency
0327 East Penn Manufacturing Company J Private
001 Eastern Band Of Cherokee Indians of North Carolina T Tribal
0329 Eastern Research Group J Private
921 Eastern Shawnee Tribe of Oklahoma T Tribal
W51 Eastern Shoshone and Northern Arapaho Tribes of Wyoming T Tribal
0330 Eastman Gelatine J Private
0331 Easton City Hall H City Agency
0332 Eau Claire City-County Health Department H City Agency
0334 El Dorado County APCD I District Agency
1372 Encana, WY J Private
1387 Enefit J Private
0341 Energy Lab Inc, Billings, Mt J Private
0343 Engineering Science, Inc J Private
0344 Enserch Environmental J Private
0347 Enviro Plan J Private
0348 Enviro-Chem J Private
1243 Environ J Private
1238 Environment Canada J Private
1329 Environmental Analytical Services Inc., CA J Private
0349 Environmental Consulting Services, Inc J Private
1208 Environmental Engineering J Private
0361 Environmental Monitoring Company (Emc) J Private
0353 Environmental Research & Technology, Inc (ERT) J Private
0354 Environmental Research Foundation J Private
1412 Environmental Resources Management J Private
1434 Environmental Resources Management (ERM) Z Other
0355 Environmental Science & Engineering, Inc (Ese) J Private
0356 Environmental Science And Engineering J Private
1356 Environmental Standards, Inc., PA J Private
0357 Environmental System Corporation J Private
0365 Eri/University Of Connecticut K Institution
0372 Evansville Division Of Air Pollution Control H City Agency
0374 Ewing Paper Mills J Private
0375 Exide Corporation J Private
0376 Exxon J Private
0377 Exxon Minerals Company J Private
1226 FDEP Ambient Monitoring Section F State Agency
0401 FMC Corporation J Private
0378 Fairbanks North Star Borough Environmental Services G County Agency
0379 Fairfax County Health Department, Environmental Health Div. G County Agency
0382 Feather River Air Quality Management District I District Agency
0383 Federal Government N Fed Nonmilitary
1330 Fishbak, Thompson & Carr & Huber, MI J Private
0384 Fitchburg Paper Company J Private
0385 Flambeau Mining Corporation J Private
0386 Flathead County Health Department G County Agency
0418 Florida Dep Of Environmental Protection Lab, Tallahassee F State Agency
0389 Florida Department Of Air And Water Pollution Control F State Agency
1328 Florida Department of Environmental Protection (FDEP) F State Agency
0390 Florida Dept of Environmental Protection Northeast District Branch Office F State Agency
0396 Florida Dept of Environmental Protection, Central District F State Agency
0391 Florida Dept of Environmental Protection, Northeast District F State Agency
0392 Florida Dept of Environmental Protection, Northwest District F State Agency
0393 Florida Dept of Environmental Protection, South District F State Agency
0394 Florida Dept of Environmental Protection, Southeast District F State Agency
0395 Florida Dept of Environmental Protection, Southwest District F State Agency
0400 Fluid Management, Inc J Private
0402 Ford Motors J Private
434 Forest County Potawatomi Community, WI T Tribal
0403 Forsyth County Environmental Affairs Department G County Agency
204 Fort Belknap Indian Community of Fort Belknap Reservation of Montana T Tribal
525 Fort Independence Indian Community of Paiute Indians of Ft Independence, CA T Tribal
613 Fort McDowell Yavapai Nation, AZ T Tribal
0408 Fort Worth Health Department H City Agency
0409 Foth And Van Dyke J Private
0410 France Stone Company J Private
0412 Fraser Paper Company, Madawaska J Private
1357 Freeport McMoRan Miami, Inc. J Private
0414 Fresno County APCD I District Agency
0416 Ft Union Coal Company J Private
0417 Fulton County Health Department G County Agency
0425 GCA, Technology Division J Private
0449 GM Central Foundry J Private
0466 GRI J Private
0419 Gainesville Air Pollution Research Laboratory H City Agency
1227 Gainesville Regional Utilities J Private
0420 Galveston City-County Health Department G County Agency
1436 Garfield County G County Agency
0421 Gary Division Of Air Pollution Control H City Agency
0426 General Chemical Corporation J Private
0427 General Electric J Private
0428 General Foods, Post Division J Private
0429 General Mills J Private
0430 General Motors J Private
0432 General Smelting And Refining J Private
0433 Geneva Lakes Environmental Agency Z Other
0434 Geneva Steel J Private
0435 Geomet Technologies, Inc J Private
0436 Georesearch, Inc J Private
0437 Georgia Air Protection Branch Ambient Monitoring Program F State Agency
0438 Georgia Department Of Public Health F State Agency
0439 Georgia Dept Of Natural Resources Air Quality Evaluation F State Agency
0440 Georgia Pacific Company, Woodland J Private
0441 Geraghty & Miller, Inc J Private
614 Gila River Indian Community of Gila River Indian Reservation, AZ T Tribal
0442 Gillen Company J Private
0443 Glacier Daido America J Private
0444 Glacier National Park N Fed Nonmilitary
1264 Glacier Vandervell, Inc., OH J Private
0448 Glenn County APCD I District Agency
0450 Gmad - Lake Orion J Private
0451 Gold Field Mining Corporation J Private
0452 Golden Sunlight Mines, Inc J Private
1351 Golder Associates, Inc. J Private
1229 Goodyear Tire Obion County, TN J Private
0453 Gopher Smelting And Refining J Private
1214 Grain Processors J Private
0455 Grand Haven Board Of Water And Light J Private
0456 Grand Rapids Department Of Air Pollution H City Agency
468 Grand Traverse Band of Ottawa And Chippewa Indians, MI T Tribal
1336 Graymont Western US, Inc. J Private
0458 Great Basin Unified APCD I District Agency
0459 Great Falls City-County Health Department G County Agency
0460 Great Northern Paper Company, Millinocket J Private
1404 Great Northern Sands, LLC J Private
1308 Great Smoky Mtn NP N Fed Nonmilitary
0463 Greede Industries J Private
0465 Greenville County Health Department G County Agency
0467 Guam Environmental Protection Agency F State Agency
1385 Gulf Coast STORET, LLC T Tribal
1259 Hamilton County Department Of Environmental Services G County Agency
0471 Hamilton County Southwest Ohio Air Pollution Control G County Agency
0472 Hammond Division Of Air Pollution Control H City Agency
1216 Hammond Pb J Private
1265 Hanson Aggregates Midwest, Inc., OH J Private
0478 Harvard School Of Public Health, Department Of Physiology K Institution
0480 Haverhill Paperboard J Private
0481 Hawaii State Department Of Health F State Agency
1406 Haystack Coal Company of Evanston, Wyoming J Private
0484 Hechimovich Sanitary Landfill, Inc J Private
0485 Henderson County Health Department G County Agency
0487 Hercules J Private
0489 Hess Oil, Virgin Islands Corporation J Private
1456 Hi-Crush Blair LLC J Private
1431 Hi-Crush Whitehall LLC J Private
0490 Hibbing Taconite J Private
1442 High Cliff consulting, LLC X Contractor
0491 Hillsborough County Environmental Protection Commission G County Agency
0492 Hillsborough County Health Department G County Agency
0493 Hoerner-Waldorf Corporation J Private
0494 Holland Board Of Public Works J Private
0495 Hollingsworth And Vase Company J Private
0508 Holtrachem Manufacturing Company J Private
0496 Holyoke Gas And Electric J Private
0497 Homestake Copper Company J Private
0499 Honda Of America, Inc J Private
0500 Hooker Chemical Company J Private
561 Hoopa Valley Tribe, CA T Tribal
0501 Hoosier Energy J Private
0921 Horsehead Corp J Private
0502 Horsehead Resource Development Company J Private
1239 Hovensa L. L. C. J Private
606 Hualapai Indian Tribe of Hualapai Indian Reservation, AZ T Tribal
0506 Humboldt County APCD I District Agency
1332 Hydrometrics J Private
0509 I/N Tek J Private
1316 ICF International J Private
0510 Idaho Air Quality Bureau F State Agency
0511 Idaho Department Of Health And Welfare-Environment Division F State Agency
0512 Illinois Department Of Public Health F State Agency
0513 Illinois Environmental Protection Agency F State Agency
0514 Illinois State Water Survey F State Agency
0518 Imperial County APCD I District Agency
1296 Independent Contractor J Private
0519 Indiana & Michigan Electric Company J Private
0520 Indiana Depart Of Environ Management/Office Of Air Quality F State Agency
1443 Indiana Municipal Power Agency (IMPA) J Private
0523 Indianapolis Office of Environmental Services H City Agency
0524 Indianapolis Power And Light Company J Private
0525 Indianapolis State Police H City Agency
0526 Inland Mining Company J Private
1429 Inovatia Laboratories J Private
1320 Institute for Tribal Environmental Professionals - NAU T Tribal
0527 Inter-Mountain Laboratory Sheridan, WY J Private
W44 Inter-tribal Council of MIchigan, Inc. T Tribal
0528 International Paper Company J Private
1257 International Truck & Engine Corp., WI J Private
0529 Interpoll Laboratories, Inc J Private
0530 Iowa Department Of Natural Resources F State Agency
0538 J.R. Simplot Company J Private
0558 JPI Transportation Products, Inc J Private
0540 Jackson County Iron Company J Private
1209 Jackson, MS Department Of Health H City Agency
0543 Jacksonville Air Pollution Control Activity H City Agency
0545 Jacksonville Department Health And Rehabilitation Services H City Agency
0546 James River Paper Corporation J Private
0547 James W Gelhaus Townsend, MT J Private
0548 Janesville Department Of Public Works H City Agency
0550 Jefferson County, AL Department Of Health G County Agency
0552 Jefferson County, TX Health Department G County Agency
0554 John Brown Incorporated J Private
1213 John'S Manville J Private
103 Kalispel Indian Community of Kalispel Reservation, WA T Tribal
0561 Kansas City Health Department, Air Quality Section H City Agency
0563 Kansas Department Of Health And Environment F State Agency
0564 Kantus J Private
927 Kaw Nation T Tribal
0566 Kemron Environmental Services J Private
0567 Kendall Company J Private
0568 Kennecott Minerals Company J Private
0570 Kent County Landfill G County Agency
0584 Kentucky Division For Air Quality F State Agency
0571 Kentucky Electric Steel Company J Private
0575 Kern County APCD I District Agency
0576 Kerr - McGee J Private
0577 Kiewit Mining Company J Private
0578 Kimberly Clark Corporation J Private
0579 Kings County APCD I District Agency
0581 Knox County Department Of Air Pollution Control G County Agency
0582 Koch Hydrocarbon J Private
0583 Koch Refining Company J Private
1352 Kohler, WI J Private
183 Kootenai Tribe of Idaho T Tribal
0586 L. F. C. Power Systems J Private
576 La Jolla Band of Luiseno Indians, CA T Tribal
577 La Posta Band of Dieguento Mission Indians of La Posta Indian Reservation, CA T Tribal
1342 LaCrosse County, WI G County Agency
432 Lac Du Flambeau Band of Lake Superior Chippewa Indians of Lac Du Flambeau Reservation of WI T Tribal
0591 Lafarge Corporation J Private
0628 Lafarge Lime Ohio Inc J Private
0593 Lake County APCD I District Agency
0594 Lake County Consolidated Air Quality Monitoring Work Group G County Agency
0595 Lake County Health Department Division Air Pollution Control G County Agency
0597 Land Reclamation Company J Private
0598 Lane Regional Air Pollution Authority I District Agency
0600 Lansing Board Of Water And Light J Private
0601 Lansing Car Assembly J Private
0602 Laredo-Webb County Health Department G County Agency
648 Las Vegas Tribe of Paiute Indians of the Las Vegas Indian Colony, NV T Tribal
0605 Lassen County APCD I District Agency
0606 Lehigh Portland Cement J Private
0608 Lewis And Clark County Health Department G County Agency
0609 Lincoln County Health Department G County Agency
0610 Lincoln Pulp And Paper Company, Lincoln J Private
0611 Lincoln-Lancaster County Health Department G County Agency
0613 Linn County Health Department G County Agency
482 Little River Band of Ottawa Indians, MI T Tribal
483 Little Traverse Bay Bands of Odawa Indians, MI T Tribal
1314 Lockheed Martin Information Technology J Private
0615 Loeb Industries J Private
1258 Logistics Management Institute J Private
0616 Lomac, Inc (Bofors Lakeway) J Private
1215 Lone Star Industries J Private
0621 Los Angeles County APCD I District Agency
0623 Louisiana Pacific J Private
0549 Louisville, KY Metro Air Pollution Control District H City Agency
1311 Loyola University Chicago K Institution
0625 Lubbock City-County Health Department G County Agency
0626 Luzenzac America, Inc J Private
1298 MARAMA J Private
0629 Macomb County Health Department G County Agency
1345 Mactec, Inc J Private
0630 Madera County APCD I District Agency
0631 Madison County Department Of Public Health G County Agency
0633 Madison Paper Industries J Private
0634 Mahoning-Trumbull Air Pollution Control Agency H City Agency
0635 Maine D.E.P. Bureau Of Air Quality Control, Augusta F State Agency
0637 Maine Technical Services J Private
108 Makah Indian Tribe of Mekah Indian Reservation, WA T Tribal
0638 Manatee County Environmental Management Department G County Agency
0639 Manistique Pulp & Paper J Private
0640 Manitowoc Public Utilities J Private
0641 Mansfield-Richland Health Department H City Agency
579 Manzanita Band of Diegueno Mission Indians of Manzanita Reservation, CA T Tribal
0642 Marathon Oil J Private
1302 Maricopa Association of Governments G County Agency
0643 Maricopa County Air Quality G County Agency
0646 Marquette Board Of Light And Power J Private
0647 Marshall University, Department Of Chemistry K Institution
0649 Martin County Health Department G County Agency
0650 Martin Marietta J Private
0651 Martin Marietta And Ohio Lime Companies J Private
0652 Martin Marietta Cement/Dragon Cement/Thomaston J Private
0653 Marvin Windows & Doors J Private
0654 Maryland Air Quality Programs F State Agency
0655 Maryland Department Of The Environment F State Agency
0656 Maryland State Bureau Of Air Quality And Noise Control F State Agency
0657 Maryland State Department Of Health F State Agency
0658 Maryland State Division Of Air Monitoring F State Agency
0660 Mass Dept Environmental Protection-Div Air Quality Control F State Agency
0662 Massachusetts Port Authority J Private
0663 Master Metals J Private
0667 McVehil-Monnett Associates J Private
0668 Mead Paper Company J Private
0669 Mecklenburg County Air Quality G County Agency
0670 Medical Area Total Energy Plant (MATEP) J Private
0673 Memphis-Shelby County Health Department G County Agency
0674 Menasha J Private
0675 Mendocino County APCD I District Agency
440 Menominee Indian Tribe of Wisconsin T Tribal
0677 Merced County APCD I District Agency
0679 Mesa County Health Department G County Agency
702 Mescalero Apache Tribe of Mescalero Reservation, NM T Tribal
1341 Metal Tek Inc., WI J Private
1331 Meteorological Solutions, Inc. J Private
0682 Metropolitan Health Department/Nashville & Davidson County G County Agency
0274 Miami-Dade County Department of Environmental Resources Management G County Agency
0683 Michigan City Air Pollution Control Division H City Agency
1405 Michigan DEQ Environmental Laboratory J Private
0685 Michigan Dept Of Environmental Quality-Air Quality Division F State Agency
0688 Michigan Standard Alloys J Private
1293 Mid-American Energy, IA J Private
0692 Midland Cogeneration Venture J Private
0693 Midwest Energy Resources Company J Private
0695 Mineral Hill Mine J Private
405 Minnesota Chippewa Tribe, MN (Fond du Lac Band) T Tribal
406 Minnesota Chippewa Tribe, MN (Grand Portage) T Tribal
407 Minnesota Chippewa Tribe, MN (Leech Lake Band) T Tribal
408 Minnesota Chippewa Tribe, MN (Mille Lacs Band) T Tribal
0698 Minnesota Department Of Health F State Agency
0700 Minnesota Pollution Control Agency, Division Of Air Quality F State Agency
0702 Mississippi Air And Water Pollution Control Commission F State Agency
0703 Mississippi DEQ, Office Of Pollution F State Agency
0704 Missoula City-County Health Department G County Agency
1430 Missouri DNR Environmental Services Program Chemical Analysis Section T Tribal
1252 Missouri Dept Of Natural Resources F State Agency
0588 Missouri Laboratory Services Program F State Agency
650 Moapa Band of Paiute Indians T Tribal
0707 Mobile Coal Producing J Private
0708 Modoc County APCD I District Agency
0709 Mojave Desert AQMD I District Agency
0710 Moline Health Department H City Agency
0711 Monitor Sugar J Private
1247 Monroe County, WI G County Agency
0713 Monsanto Industrial Chemicals Company J Private
0714 Montana Department Of State Lands F State Agency
0715 Montana Power Company J Private
0716 Montana Refining Company J Private
0717 Montana Resources J Private
0718 Montana Talc Company J Private
0719 Montana Tunnels Mining, Inc J Private
0720 Montaup Electric Company J Private
0721 Monterey Bay Unified APCD I District Agency
0722 Montgomery County Department Of Public Health G County Agency
0725 Montgomery County, MD Health Department G County Agency
0724 Montgomery County, OH Health Department G County Agency
0736 Montgomery Watson J Private
0726 Morehouse Parish Health Unit G County Agency
582 Morongo Band of Mission Indians, CA T Tribal
0728 Morton Salt J Private
1363 Mountain Cement J Private
1376 Mountain Studies Institute K Institution
0730 Mt Dept Of Environmental Quality, Air Quality Division F State Agency
0732 Municipality Of Anchorage Air Pollution Control Agency G County Agency
0733 Murray & Trettle, Inc J Private
0735 Muskegon County Health Department G County Agency
0737 N G K Metals Reading, PA J Private
1416 NAQS Environmental Experts J Private
0750 NC Dept Of Environment, Health And Natural Resources F State Agency
1297 NESCAUM J Private
0795 NTH, Consultants, Ltd J Private
1245 NYU - School Of Medicine K Institution
0738 Nassau County Department Of Health G County Agency
0742 National Climatic Center, Us Department Of Commerce N Fed Nonmilitary
0743 National Lime And Stone Company J Private
0744 National Oceanic And Atmospheric Administration/Umo N Fed Nonmilitary
0745 National Park Service N Fed Nonmilitary
0746 National Southwire Aluminum Company J Private
0747 National Weather Service N Fed Nonmilitary
780 Navajo Nation, AZ, NM, UT T Tribal
1269 Naval Surface Warfare Center, Crane Division, IN L Military
0752 Nebraska Department Of Environmental Control F State Agency
0755 Nekoosa Packaging Company J Private
0756 Network Environmental, Inc J Private
0757 Nevada Division Of Environmental Protection F State Agency
0760 New England Ethanol, Auburn J Private
0761 New England Power Company J Private
0762 New Hampshire Air Resources Agency F State Agency
0763 New Jersey Institute Of Technology K Institution
1338 New Jersey Meadowlands Commission F State Agency
0764 New Jersey State Department Of Environmental Protection F State Agency
0765 New Mexico Environment Department F State Agency
1346 New York City Department of Health and Mental Hygiene J Private
0767 New York Port Authority And Environmental Management J Private
0768 New York State Department Of Environmental Conservation F State Agency
182 Nez Perce Tribe, Idaho T Tribal
0771 Noranda, Inc J Private
0773 North American Coal J Private
0774 North American Weather Consultants J Private
0775 North Carolina Department Of Water And Air Resources F State Agency
0776 North Carolina Dept Of Environment And Natural Resources F State Agency
0779 North Carolina Western Regional Air Pollution Control Agency I District Agency
1384 North Central Texas Council of Governments F State Agency
0781 North Coast Unified Air Quality Management District I District Agency
0782 North Dakota State Department Of Health F State Agency
1454 North East Ohio PQAO F State Agency
0784 North Ohio Valley Air Authority F State Agency
0786 Northeast Utilities J Private
1260 Northern Arizona University K Institution
207 Northern Cheyenne Tribe of Northern Cheyenne Indian Reservation, MT T Tribal
0788 Northern Indiana Public Service Company J Private
0789 Northern Laboratories J Private
0790 Northern Sierra AQMD I District Agency
0791 Northern Sonoma County APCD I District Agency
0792 Northern States Power Company J Private
0794 Northwest Air Pollution Authority I District Agency
1392 Northwest Clean Air Agency J Private
195 Northwestern Band of Shoshoni Nation of Utah (Washakie) T Tribal
481 Nottawaseppi Huron Band of Potawatomi, MI T Tribal
1433 Nucor Steel J Private
0908 OCI Wyoming L.P. J Private
344 Oglala Sioux Tribe of Pine Ridge Reservation, SD T Tribal
0803 Ohio Department Of Health F State Agency
1256 Ohio EPA Central Office F State Agency
0805 Ohio EPA, Central District Office F State Agency
0806 Ohio EPA, Division Of Environmental Services F State Agency
0807 Ohio EPA, Northeast District Office F State Agency
0808 Ohio EPA, Northwest District Office F State Agency
0809 Ohio EPA, Southeast District Office F State Agency
0810 Ohio EPA, Southwest District Office F State Agency
1335 Ohio University, Athens, OH K Institution
0811 Oklahoma City-County Health Department G County Agency
0812 Oklahoma Dept. Of Environmental Quality Air Quality Division F State Agency
0814 Olmstead County Health Department G County Agency
0815 Olympic Air Pollution Control Authority I District Agency
0816 Omaha-Douglas County Health Department H City Agency
433 Oneida Tribe of Indians of Wisconsin T Tribal
0818 Ontonagon WWTP J Private
0820 Orange County Environmental Protection Division G County Agency
0821 Oregon Department Of Environmental Quality F State Agency
0822 Oregon State Board Of Health F State Agency
1383 Orsat J Private
0824 Owens-Corning Fiberglas Corporation J Private
1354 PACE Analytical Services, Inc., MN J Private
0847 PEI Associates J Private
0883 PPG Ind, Inc J Private
1375 PSGC (Prairie State Generating Company, LLC), IL J Private
0829 Pacific Environmental Services J Private
1348 Pacificorp, WY J Private
549 Paiute-Shoshone Indians of Bishop Community of Bishop Colony, CA T Tribal
624 Paiute-Shoshone Indians of the Lone Pine Community of Lone Pine Reservation,CA T Tribal
583 Pala Band of Luiseno Mission Indians of Pala Reservation, CA T Tribal
0833 Palm Beach County Health Department G County Agency
0836 Paoli Corporation J Private
0838 Pasco County Health Department G County Agency
014 Passamaquoddy Tribe of Maine T Tribal
016 Passamaquoddy Tribe of Maine (Indian Township) T Tribal
017 Passamaquoddy Tribe of Maine (Pleasant Point) T Tribal
812 Pawnee Nation of Oklahoma T Tribal
0839 Payne And Dolan, Inc J Private
0841 Peabody Coal Company J Private
0842 Peavey Company J Private
586 Pechanga Band of Luiseno Mission Indians of Pechanga Reservation, CA T Tribal
0844 Pedco Environmental J Private
0846 Pegasus Gold Corporation J Private
0849 Penn-Dixie Industries, Inc J Private
0851 Pennsylvania Department Of Environmental Protection F State Agency
0854 Pennsylvania State University (Penn State) K Institution
0855 Penobscot Energy Recovery Company, Orrington J Private
018 Penobscot Tribe of Maine T Tribal
1448 Pete Lien & Sons, Inc. J Private
0860 Phelps Dodge Corporation J Private
0861 Philadelphia Air Management Services H City Agency
0862 Philadelphia Div Air Pollution Control And Env Sanitation H City Agency
0863 Phillips Petroleum J Private
534 Picayune Ranceria of Chukchansi Indians of California T Tribal
0864 Pima County Department of Environmental Quality G County Agency
1394 Pima County Regional Wastewater Reclamation Department F State Agency
0865 Pinal County APCD G County Agency
0866 Pine State Power J Private
0867 Pinellas County Department Of Environmental Management G County Agency
0869 Pioneer Valley Tsp Group J Private
0894 Pitkin County Department Of Health G County Agency
0870 Pittsburgh Plate Glass J Private
0872 Placer County APCD I District Agency
1287 Planetgov User Support J Private
028 Poarch Band of Creek Indians T Tribal
0873 Polk County Environmental Services Department G County Agency
0874 Polk County Physical Planning G County Agency
813 Ponca Tribe of Indians of Oklahoma T Tribal
0876 Popco J Private
113 Port Gamble Band of SKlallam Indians T Tribal
1337 Port of Los Angeles H City Agency
0878 Porter County Health Department G County Agency
0880 Portsmouth City Health Dept Division Air Pollution Control H City Agency
0881 Potlatch Corporation J Private
0882 Powder River Coal Company J Private
862 Prairie Band of Potawatomi Nation,KS T Tribal
1414 Preferred Sands - Blair J Private
1415 Preferred Sands, LLC J Private
0884 Prince George's County Health Department G County Agency
1237 Procter And Gamble Paper Products Company J Private
0886 Public Service Of Indiana J Private
706 Pueblo of Jemez, NM T Tribal
715 Pueblo of Santa Ana, NM T Tribal
718 Pueblo of Taos, NM T Tribal
720 Pueblo of Zia, NM T Tribal
0889 Puerto Rico Environmental Quality Board F State Agency
0890 Puget Sound Air Pollution Control Agency I District Agency
0891 Pulaski County Health Department G County Agency
0892 Purdue University Civil Eng Department K Institution
115 Puyallup Tribe of Puyallup Reservation, WA T Tribal
651 Pyramid Lake Paiute Tribe of Pyramid Lake Reservation, NV T Tribal
0897 Qualitech J Private
1266 Quality Data Systems, Inc. J Private
920 Quapaw Tribe of Indians, OK T Tribal
0896 Quebecor J Private
117 Quinault Tribe of Quinault Reservation, WA T Tribal
1312 RJ Lee Group, Center for Laboratory Sciences Pasco, WA J Private
0912 RMT, Inc J Private
1268 RR Donnley, IN J Private
0930 RTP Environmental Associates J Private
0899 Radian Corporation J Private
0900 Ramp - Basin Electric J Private
0901 Rayovac Company J Private
409 Red Lake Band of Chippewa Indians, MN T Tribal
0903 Regional Waste Systems, Portland J Private
653 Reno/Sparks Indian Colony, NV T Tribal
1217 Research Triangle Institute RTP, NC J Private
0907 Rhode Island DEM And DOH F State Agency
0909 Richmond Power And Light J Private
587 Rincon Band of Luiseno Mission Indians of the Rincon Reservation, CA T Tribal
0914 Roanoke County/City Of Salem Air Pollution Control G County Agency
0916 Rock Hill City Health Department H City Agency
0923 Rocky Mountain Arsenol (US Army) L Military
0934 Rogers Group J Private
0924 Rosebud Energy J Private
0925 Rosebud Operating Services, Inc J Private
0926 Ross Metals Incorporated J Private
0933 Rust/Sec Donohue Environment & Infastructure J Private
0935 S. D. Warren Company J Private
1451 SLR Inc. J Private
863 Sac and Fox Nation of Missouri in KS & NE T Tribal
824 Sac and Fox Nation, OK T Tribal
0936 Sacramento County APCD I District Agency
0938 Saginaw Malleable Iron Plant J Private
615 Salt River Pima-Maricopa Indian Community of Salt River Reservation, AZ T Tribal
133 Samish Indian Tribe, Washington T Tribal
0941 San Antonio Metropolitan Health District I District Agency
0942 San Diego County Air Pollution Control District I District Agency
0943 San Francisco Health Department H City Agency
0945 San Joaquin Valley Unified Air Pollution Control District I District Agency
0946 San Luis Obispo County APCD I District Agency
1441 Sand Products of Wisconsin J Private
0948 Santa Barbara County APCD I District Agency
542 Santa Rosa Indian Community of Santa Rosa Rancheria, CA T Tribal
382 Santee Sioux Tribe Nation, NE T Tribal
0951 Sarasota County Environmental Services G County Agency
1255 Saskpower J Private
0952 Saturn Corporation J Private
0953 Savage Zinc Incinc Company J Private
0955 Science Applications International Corporation J Private
0957 Scott Paper Company, Winslow J Private
0958 Sea Ray J Private
A67 Seldovia Village Tribe T Tribal
0959 Semarnap A EPA HQ ATM
1355 Severn Trent Laboratories, Knoxville, TN J Private
0960 Shasta County APCD I District Agency
0961 Shell J Private
1373 Shell Engineering & Assoc., MO J Private
1378 Short Elliott Hendrickson (SEH, Inc.) J Private
282 Shoshone Tribe of The Wind River Reservation, WY T Tribal
180 Shoshone-Bannock Tribes of Fort Hall Reservation of Idaho T Tribal
1294 Sierra Research, CA J Private
0963 Sigeco J Private
0964 Silver Valley Laboratory J Private
1418 Sinclair Casper Refining Company J Private
1388 Sinclair Refinery, Sinclair J Private
0967 Siskiyou County APCD I District Agency
120 Skokomish Indian Tribe of Skokomish Reservation, WA T Tribal
1397 Smart Sand, LLC J Private
126 Snoqualmie Tribe, WA T Tribal
1365 Solvay J Private
0969 Sonoma Technology J Private
1309 South Alabama Regional Planning Commission I District Agency
0971 South Carolina Department Health And Environmental Control F State Agency
0972 South Coast Air Quality Management District I District Agency
0973 South Dakota Dept Environmental Protection Air Quality Prog F State Agency
1301 South East Texas Regional Planning Commission (SETRPC) I District Agency
1455 South West Ohio PQAO F State Agency
1427 Southeast Missouri Mining and Milling Division (SEMO) J Private
750 Southern Ute Indian Tribe of Southern Ute Reservation, CO T Tribal
0978 Southwest Air Pollution Control Authority I District Agency
0979 Southwestern Ohio Air Pollution Control Agency F State Agency
0980 Sparta Manufacturing Company J Private
0981 Spartanburg County Pollution Control Authority G County Agency
303 Spirit Lake Tribe, ND T Tribal
1435 Spiritwood Energy Station G County Agency
0982 Spokane County Air Pollution Control Authority I District Agency
102 Spokane Tribe of Spokane Reservation, WA T Tribal
0983 Spring Creek Coal Company J Private
1292 Springfield City Utilities, MO H City Agency
0986 Springfield-Greene County Air Pollution Control Authority H City Agency
0987 St Cloud Air Pollution Control Agency H City Agency
0988 St Croix Meadows Greyhound Racetrack J Private
0989 St Joseph County Health Department G County Agency
0990 St Louis City Division Of Air Pollution Control H City Agency
0991 St Louis County Health Department G County Agency
0992 St Louis County Health Department Air Pollution Control G County Agency
0993 St Paul Air Pollution Control Agency H City Agency
007 St. Regis Mohawk Tribe, New York T Tribal
0999 Stanislaus County APCD I District Agency
1000 State Of Delaware F State Agency
1001 State Of Louisiana F State Agency
1002 State Of Maryland Air Management Administration F State Agency
1003 State Of New York Department Of Health F State Agency
1006 Steel Dynamics J Private
1007 Steubenville Air Pollution Department H City Agency
1236 Stillwater Mining Company J Private
438 Stockbridge Munsee Community, WI T Tribal
1009 Stone Container Corporation J Private
1012 Superior Environmental Services, Inc J Private
1019 Superior Services, Inc J Private
1401 Superior Silica Sands, LLC J Private
1015 Superior Testing Laboratory J Private
114 Suquamish Indian Tribe of Port Madison Reservation, WA T Tribal
1016 Sutter County APCD I District Agency
122 Swinomish Indians of Swinomish Reservation, WA T Tribal
1018 Sylvania Silica J Private
1432 T & B Systems Z Other
1048 TRC Environmental Consultants, Inc J Private
1057 TS Monitoring J Private
551 Table Mountain Rancheria T Tribal
1313 Tahoe Regional Planning Agency I District Agency
1419 Tallgrass Energy Partners J Private
1020 Target Corporation J Private
1390 Tata Chemicals J Private
1398 Taylor Frac, LLC J Private
1445 Technical Monitoring Services Incorporated J Private
1022 Tehama County APCD I District Agency
1025 Tennessee Division Of Air Pollution Control F State Agency
1026 Tennessee Eastman Company J Private
1027 Tennessee Luttrell Lime J Private
1028 Tennessee River Pulp And Paper Company J Private
1029 Tennessee Valley Authority N Fed Nonmilitary
1031 Texaco J Private
1421 Texas A and M University K Institution
1035 Texas Commission On Environmental Quality F State Agency
1034 Texas Gulf Chemical Company J Private
1426 Texas Tech J Private
1036 The Ansul Company J Private
1228 The Southern Company J Private
301 Three Affiliated Tribes of Fort Berthold Reservation, ND T Tribal
1039 Thunder Basin Coal Company J Private
1041 Timken J Private
1042 Tondu Interests J Private
1043 Tonto Hills Observatory J Private
595 Torres-Martinez Cahuilla Indians, California T Tribal
1045 Total Leonard J Private
1212 Toyota J Private
1425 Trace Analytics J Private
1047 Tracer Technologies J Private
1051 Tri-Borough Air Resources Management District I District Agency
1052 Tri-County Air Pollution Authority I District Agency
1053 Tri-County District Health Service I District Agency
1262 Tribal Air Monitoring Support - Nau T Tribal
1056 Triton Coal J Private
2351 Trona Environmental Subcommittee F State Agency
1447 Tronox J Private
1058 Tucson Electric Power Company J Private
123 Tulalip Triber of Tulalip Reservation, WA T Tribal
1059 Tulare County APCD I District Agency
1060 Tulsa City-County Health Department G County Agency
1061 Tuolumne County APCD I District Agency
1062 U P Generating Company J Private
1400 U.S. Silica Company J Private
1250 URS Corporation J Private
1299 URSCorp, TX J Private
1369 US Army Corps of Engineers L Military
1093 US Department Of Interior (USGS-BLM) N Fed Nonmilitary
1096 US EPA - Region 1 P EPA Region
1105 US EPA - Region 10 P EPA Region
1097 US EPA - Region 2 P EPA Region
1098 US EPA - Region 3 P EPA Region
1099 US EPA - Region 4 P EPA Region
1100 US EPA - Region 5 P EPA Region
1101 US EPA - Region 6 P EPA Region
1102 US EPA - Region 7 P EPA Region
1103 US EPA - Region 8 P EPA Region
1104 US EPA - Region 9 P EPA Region
1261 US EPA Ann Arbor Lab C EPA HQ Effects
1106 US EPA National Exposure Research Lab A EPA HQ ATM
1321 US EPA OEI A EPA HQ ATM
1322 US EPA ORD A EPA HQ ATM
1108 US EPA/OAQPS A EPA HQ ATM
1109 US EPA/OAQPS/AAMG A EPA HQ ATM
1107 US EPS/Human Studies Lab/Health Effects Research Div C EPA HQ Effects
1110 US Forest Service N Fed Nonmilitary
1370 US Geological Survey N Fed Nonmilitary
1344 USEPA - Clean Air Markets Division A EPA HQ ATM
1111 USG Interior Products J Private
928 UTE Mountain UTE Tribe T Tribal
1408 Unimin Corporation J Private
1065 Union Camp J Private
1066 Union Carbide J Private
1072 United States Atomic Energy Commission N Fed Nonmilitary
1295 Universidad Autonoma De Baja, CA K Institution
1079 University College Of Pharmacy, Washington K Institution
1080 University Hygenic Laboratory F State Agency
1082 University Of California-Riverside K Institution
1084 University Of Iowa J Private
1086 University Of Maryland K Institution
1088 University Of Medicine And Dentistry Of New Jersey K Institution
1449 University of California - Davis K Institution
1323 University of Cincinnati K Institution
1423 University of Texas Rio Grande Valley K Institution
1393 University of Texas School of Public Health K Institution
1091 Unocal J Private
1092 Upjohn J Private
131 Upper Skagit Indian Tribe of Washington T Tribal
1113 Utah Department Of Environmental Quality F State Agency
1403 Utah State University K Institution
687 Ute Indian Tribe of Uintah & Ouray Reservation, UT T Tribal
751 Ute Mountain Tribe of the Ute Mountain Reservation, CO, NM, & UT T Tribal
1116 Vandenberg AFB J Private
1325 Vectren Corporation J Private
1222 Veeland Farm Services J Private
1117 Ventron Corporation J Private
1118 Ventura County APCD I District Agency
1119 Vermont Agency Of Environmental Conservation F State Agency
1240 Versar, Inc., Esm Operations J Private