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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
0006 Affiliated Environmental Services, 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
0011 Akron Department Of Health H City Agency
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
1223 Alachua County Environmental Protection Department G County Agency
0014 Alachua County Pollution Control District G County Agency
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
0022 Allied Corporation-Moncure Plant J Private
0023 Altoona Department Of Water Parks And Public Property H City 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
0036 Anaconda Aluminum 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
0048 Applied Meteorology, Inc J Private
281 Arapahoe Tribe of The Wind River Reservation, WY T Tribal
1350 Arch Coal Company, WY J Private
0049 Archbold Biological Station I District Agency
0050 Arco J Private
0051 Arco Coal Company J Private
0052 Area Oil Shale Supervisor Office J Private
0053 Arizona Department Of Environmental Quality F State Agency
0054 Arizona Portland Cement Company J Private
0055 Arkansas Department Of Environmental Quality F State Agency
0056 Arlington Co Environmental Health Bureau Dept Human Resource G County Agency
0057 Armco J Private
0058 Armco Steel Company J Private
1424 Armstrong Laboratory J Private
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
0063 Ash Grove Cement J Private
0064 Ashland Oil J Private
0065 Ashland-Boyd County Health Department G County Agency
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
0096 BGI- Billings Generation Incorporated J Private
430 Bad River Band of Lake Superior Tribe of Chippewa Indians of Bad River, WI T Tribal
0072 Baldwin County Health Department G County Agency
0073 Baltimore City Health Department H City Agency
0074 Baltimore County Division Of Air Pollution Control G County Agency
0075 Baltimore County Health Department G County Agency
0076 Baltimore Gas And Electric Company J Private
0077 Barkley And Dexter Labs, Inc J Private
0078 Barmet Aluminum Corporation J Private
0079 Barr Engineering Company J Private
0080 Basic, Inc J Private
0081 Basin Creek Mining 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
0087 Bay County Health Department G County Agency
0088 Bearpaw Energy Inc J Private
0089 Beaunit Fibers J Private
0090 Bedford Park Air Pollution Control Board H City Agency
0091 Beker Industries J Private
0092 Benham Holway Power Group J Private
1327 Benton Clean Air Authority, WA I District Agency
0093 Berlin Foundry Corporation J Private
0094 Bethlehem Bureau Of Health H City Agency
0095 Bethlehem Steel Corporation J Private
0097 Bi-City Health Bureau H City Agency
0098 Big Rivers Electric Corporation J Private
0099 Billings Laurel Air Quality Technical Committee I District Agency
0100 Binghamton Bureau Of Health H City Agency
0101 Bismarck Department Of Health And Building Inspection H City Agency
0102 Bison Engineering J Private
0103 Black And Vetch Consulting Engineers J Private
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
0108 Boliden Resources Inc, T12r8 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
0115 Brc/Rasmussen J Private
0116 Brevard County Health Department G County Agency
0117 Brevard County Office Of Natural Resources G County Agency
0118 Brewster Phosphates J Private
0119 Briess Industries, Inc J Private
0120 Bristol Health Department H City Agency
0121 Broward County Environmental Protection Department G County Agency
0122 Broward County Health Department G County Agency
0123 Brown Printing Central J Private
0124 Browning Ferris Industries J Private
0125 Brownwood-Brown County Health Department G County Agency
0126 Bruce Carter & Associates J Private
0127 Brunswick Naval Air Station, Brunswick L Military
0128 Brush-Wellman J Private
0129 Bryce Canyon National Park N Fed Nonmilitary
1437 Buckskin Mining Company J Private
0130 Buick Motor Division J Private
0131 Buncombe County Health Department G County Agency
0132 Bunker Hill J Private
0133 Burgess & Niple, Limited J Private
0134 Burlington Northern Railroad Company J Private
0135 Burns And Mcdonnell Engineering 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
0140 Cabell Huntington Health Department G County Agency
0141 Caddo Parish-Shreveport Health Unit G County Agency
0142 Calaveras County Health Department G County Agency
0143 Calcasieu Parish Health Unit G County Agency
0144 Calhoun County Health Department G County Agency
0145 California Air Resources Board F State Agency
0146 California Institute Of Technology K Institution
0147 Cambria Co Envir Resources Dept Bureau Air Quality & Noise G County Agency
0148 Camden Bureau Of Fire Department Of Public Safety H City Agency
0149 Camden County Health Department G County Agency
0150 Campbell Soup J Private
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
0155 Cascade County Air Pollution Control G County Agency
0156 Casper-Natrona County Health Department G County Agency
032 Catawba Indian Nation T Tribal
1233 Cenex Harvest States - Superior, WI J Private
0157 Centennial Minerals 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
0159 Central Analytical Lab J Private
0160 Central Foundry J Private
0161 Central Illinois Light Company J Private
0162 Central Maine Power Company, Maine Office, Augusta J Private
1453 Central Ohio PQAO F State Agency
0163 Central Wayne Co. Sanitation Authority J Private
0165 Champion International Corporation J Private
0166 Champion-Hoerner Waldorf J Private
0167 Charleston County Health Department G County Agency
0168 Charleston Federal Building H City Agency
0169 Charlotte Health Department H City Agency
0170 Chattanooga-Hamilton County Air Pollution Control G County Agency
0171 Chem-Met J Private
0172 Chemetco J Private
0173 Chen Northern Labs J Private
0174 Cherokee County Health Department G County Agency
905 Cherokee Nation, Oklahoma T Tribal
W32 Cherokee Nation/ITEC (consortium) T Tribal
0175 Cherry Hill Board Of Health H City Agency
0176 Chester Bureau Of Health H City Agency
1334 Chester LabNet. J Private
0177 Chev Saginaw Metals Casting Plant J Private
0178 Chevrolet Motor Division J Private
0179 Chevron J Private
0180 Chicago Department Of Air Pollution Control H City Agency
0181 Chicago Department Of Consumer Services H City Agency
1420 Chieftain Sand J Private
0182 Chippewa County Health Department G County Agency
1396 Chippewa Sand Company, LLC J Private
907 Choctaw Nation of Oklahoma T Tribal
0183 Cianbro/Dragon Cement, Thomaston J Private
0184 Cincinnati Bureau Air Pollution Control & Heating Inspection H City Agency
1339 Citation Corp., WI J Private
0223 City University of New York, CUNY K Institution
1358 City of Aspen, CO H City Agency
0185 City of Austin, TX H City Agency
0186 City of Bangor H City Agency
0187 City of Bloomington H City Agency
0188 City of Bridgeport Department of Health H City Agency
0189 City of Bristol Department of Health H City Agency
0190 City of Chattanooga 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
0194 City of Columbus Air Pollution Control 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
0198 City of Granite City 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
0203 City of Milbank H City Agency
0204 City of Milford Department of Health H City Agency
0205 City of Milwaukee H City Agency
0206 City of Moorhead Healht Department H City Agency
0207 City of Muncie H City Agency
0208 City of New Britain Department of Health H City Agency
0209 City of New Haven Department of Health H City Agency
0210 City of New York Department of Environmental Protection H City Agency
0211 City of North Chicago H City Agency
0212 City of Norwalk Department of Health H City Agency
0213 City of Richfield H City Agency
0214 City of Richmond, Bureau of Air Pollution Control H City Agency
0215 City of Roanoke, Department of Air Pollution H City Agency
0216 City of Schenectady Health Department H City Agency
0217 City of Stamford Department of Health H City Agency
0218 City of Stratford Department of Health H City Agency
0219 City of Tampa Department of Sanitary Sewers H City Agency
0220 City of Toledo, Environmental Services Division H City Agency
0221 City of Utica Department of Health H City Agency
0222 City of York Department of Health H City Agency
0224 City-County Of Denver Health Department G County Agency
0227 Clark County, AZ Health District G County Agency
0225 Clark County, IN Health Department G County Agency
0226 Clark County, NV DAQEM G County Agency
0228 Clemson Agriculture College & US Dept Of Agriculture K Institution
0229 Cleveland Air Pollution Control Agency H City Agency
0230 Cleveland County Air Pollution Control Agency G County Agency
0231 Cleveland Department Of Health And Welfare H City Agency
0232 Cleveland Public Schools K Institution
0233 Cleveland-Cliffs Iron Company J Private
0234 Clifton Board Of Health H City Agency
0235 Coca Mines, Inc J Private
0236 Cochise County Health Department G County Agency
181 Coeur D'Alene Tribe of The Coeur D'Alene Reservation, ID T Tribal
0237 Cogeneration Management Company J Private
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
0241 Colorado Department of Highways F State Agency
0240 Colorado Department of Public Health And Environment F State Agency
1389 Colorado State University J Private
0242 Colt Industries-Beloit J Private
0243 Columbia County Health Department G County Agency
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
0249 Concordia Parish Health Unit G County Agency
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
0253 Conservation Consultants, Inc 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
0260 Cool Water Coal Gasification Programs J Private
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
0266 Crane and Company, Inc J Private
1359 Crocker Nuclear Laboratory, University of California C EPA HQ Effects
202 Crow Tribe of Montana T Tribal
0268 Cumberland Forestry Division H City Agency
0269 Cyanokem, Inc J Private
0270 Cyprus Industrial Minerals Company J Private
0271 Cyprus Northshore Mining J Private
0273 D.I. Corporation/James River, Old Town J Private
1353 DATA CHEM Laboratories, Inc., OH 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
0282 Danville Health Department H City Agency
0283 David E. Woodman J Private
0284 Davies County Health Department G County Agency
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
0288 Dearborn Department of Public Works H City Agency
0289 Decker Coal Company J Private
0290 Deerfield Speciality Papers J Private
0291 Del Rio-Val Verde Health Department G County Agency
0292 Delaware Air Pollution Authority State Board of Health F State Agency
0293 Delaware County Health Department G County Agency
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
0298 Department of Health County Of Westchester G County Agency
0301 Derenzo and Associates J Private
1207 Desert Research Institute J Private
0302 Detroit Bureau of Air Pollution Control H City Agency
0303 Detroit Edison Company J Private
0304 Detroit Metro Airport J Private
1450 Detroit Water and Sewage Department J Private
1391 Devon Energy J Private
0305 Diamond Shamrock Corporation 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
0309 Dona Ana County Health Department G County Agency
0310 Doniphan County Health Department G County Agency
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
0317 Du Pont Imaging System 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
0319 Duluth Department of Public Health H City Agency
0320 Duluth Missabe And Iron Range Railway Company J Private
1204 Durham County Air Pollution Control Agency G County Agency
1205 Duval Health Improvement Authority G County Agency
1206 Dynecol, Inc 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
0362 EPA New Mexico IPA F State Agency
0363 ER & T Commonwealth Edison J Private
0364 ERCE J Private
1318 EXCEL Management Systems, Inc. J Private
0323 East Baton Rouge Parish Health Unit G County Agency
0324 East Chicago Division of Air Quality H City Agency
0325 East Grand Fire Department (Polk County) H City Agency
0326 East Kentucky Power Company J Private
0327 East Penn Manufacturing Company J Private
0328 East Side Health District H City Agency
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
0333 Ecology Audits, Inc J Private
0334 El Dorado County APCD I District Agency
0336 El Paso County Health Department G County Agency
0337 Elizabeth Department of Health H City Agency
0338 Elmira Maintenance Department H City Agency
0339 Embreeville State Hospital Sewage Treatment Plant J Private
1372 Encana, WY J Private
1387 Enefit J Private
0341 Energy Lab Inc, Billings, Mt J Private
0342 Enesco/Cal Lab Analytical J Private
0343 Engineering Science, Inc J Private
0344 Enserch Environmental J Private
0346 Entropy Environmentalists, Inc 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
0351 Environmental Health Laboratories-Philadelphia J Private
0352 Environmental Health Services 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
0358 Environmental Testing J Private
0359 Environmental Waste Control J Private
0360 Enviroplan J Private
0365 Eri/University Of Connecticut K Institution
0366 Erie Bureau Of Engineers Licenses And Smoke Abatement H City Agency
0367 Erie County Department Of Environmental Control G County Agency
0368 Erie County Dept Of Health Division Of Environmental Control G County Agency
0369 Erie County Health Department G County Agency
0370 Espey, Huston, And Associates, Inc J Private
0371 Etowah County Health Department G County Agency
0372 Evansville Division Of Air Pollution Control H City Agency
0373 Everglades National Park N Fed Nonmilitary
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
0380 Fargo Health Department H City Agency
0381 Farrell City Hall H City 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
0387 Flint Air Pollution Control Division H City Agency
0388 Flint Department Of Public Works And Utilities H City 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
0397 Florida Power And Light J Private
0398 Florida Power Corporation J Private
0399 Florida State Board Of Health F State Agency
1319 Florida Sugar Cane League J Private
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
0404 Forsyth County Health 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
0407 Fort Wayne Board Of Health H City Agency
0408 Fort Worth Health Department H City Agency
0409 Foth And Van Dyke J Private
0410 France Stone Company J Private
0411 Franklin County Marine Laboratory G County Agency
0412 Fraser Paper Company, Madawaska J Private
0413 Frederick County Health Department G County Agency
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
0422 Gary Fire Department H City Agency
0423 Gaston County Air Pollution Agency G County Agency
0424 Gaston County Health Department G County 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
0431 General Portland Cement Company 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
0445 Glassboro State College, Science Department K Institution
0446 Glen Cove Department Of Public Works H City Agency
0447 Glendale Department Of Public Service H City Agency
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
0454 Grand Forks Health Department H City Agency
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
0457 Grayson County Health Department G County Agency
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
0461 Greater Anchorage Area Borough Health Department I District Agency
0462 Greater Detroit Resource Recovery Authority J Private
0463 Greede Industries J Private
0464 Greenlee County G County Agency
0465 Greenville County Health Department G County Agency
0467 Guam Environmental Protection Agency F State Agency
0468 Guam Power Authority J Private
0469 Guilford County Health Department G County Agency
0470 Gulf Coast Research Lab Institutions Of Higher Learning J Private
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
0473 Hammond Health Department H City Agency
1216 Hammond Pb J Private
0474 Hampton Health Department H City Agency
0475 Hancock County Health Department G County Agency
0476 Hanna Mining Company J Private
1265 Hanson Aggregates Midwest, Inc., OH J Private
0477 Hardy Salt J Private
0478 Harvard School Of Public Health, Department Of Physiology K Institution
0479 Hatteras Naval Facility, United States Navy L Military
0480 Haverhill Paperboard J Private
0481 Hawaii State Department Of Health F State Agency
0482 Hawaiian Electric Company J Private
1406 Haystack Coal Company of Evanston, Wyoming J Private
0483 Hazleton Dept Environmental Resources, Bureau Air Pollution H City Agency
0484 Hechimovich Sanitary Landfill, Inc J Private
0485 Henderson County Health Department G County Agency
0486 Henry-Martinsville Health District I District Agency
0487 Hercules J Private
0488 Hernando County Planning Department G County Agency
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
0498 Homestake Mining 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
0503 Houston Lighting And Power J Private
1239 Hovensa L. L. C. J Private
0504 Howard County Health Department G County Agency
606 Hualapai Indian Tribe of Hualapai Indian Reservation, AZ T Tribal
0505 Hudson Municipal Air Pollution Commission G County Agency
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
0516 Immigration And Custom Building N Fed Nonmilitary
0517 Imore Gas Gaw And Electric Company J Private
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
0521 Indiana State Department Of Conservation F State Agency
0522 Indiana University Of Pennsylvania K Institution
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
0531 Iowa Power And Light Company J Private
0532 Iowa State Department Of Health F State Agency
0533 Ironton Air Pollution Control Agency H City Agency
0534 Ironton City Health Department H City Agency
0536 J.E. Baker Company J Private
0537 J.M. Huber Corporation, Easton J Private
0538 J.R. Simplot Company J Private
0558 JPI Transportation Products, Inc J Private
0539 Jackson City Planning Office, Colorado Department Of Health H City Agency
0540 Jackson County Iron Company J Private
0542 Jackson Department Of Public Health H City Agency
0541 Jackson, KY Department Of Health H City Agency
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
0551 Jefferson County, CO Health Department G County Agency
0552 Jefferson County, TX Health Department G County Agency
0553 Jersey City Board Of Health H City Agency
0554 John Brown Incorporated J Private
1213 John'S Manville J Private
0555 Johns Hopkins University K Institution
0556 Johnson County Health Department G County Agency
0557 Johnstown Fire Department H City Agency
0559 Kalamazoo City-County Health Department H City Agency
103 Kalispel Indian Community of Kalispel Reservation, WA T Tribal
0560 Kansas City Air Quality Division, Missouri H City Agency
0561 Kansas City Health Department, Air Quality Section H City Agency
0562 Kansas City, KS And Wyandotte County Health Department G County Agency
0563 Kansas Department Of Health And Environment F State Agency
0564 Kantus J Private
927 Kaw Nation T Tribal
0565 Keci Television J Private
0566 Kemron Environmental Services J Private
0567 Kendall Company J Private
0568 Kennecott Minerals Company J Private
0569 Kenosha Health Department H City Agency
0570 Kent County Landfill G County Agency
0584 Kentucky Division For Air Quality F State Agency
0571 Kentucky Electric Steel Company J Private
0572 Kentucky Power Company J Private
0573 Kentucky Utilities J Private
0574 Kenvirons, Inc 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
0580 Knife River Coal J Private
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
0587 La Crosse Health Department H City Agency
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
0590 Lackawanna Valley Survey G County Agency
0591 Lafarge Corporation J Private
0628 Lafarge Lime Ohio Inc J Private
0592 Lake Charles Technical Air Committee 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
0596 Lancaster Labs, Inc J Private
0597 Land Reclamation Company J Private
0598 Lane Regional Air Pollution Authority I District Agency
0599 Lansing Air Pollution Control Board H City 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
0603 Larimer County Health Department G County Agency
0604 Las Animas-Huerfand District Health Department I District 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
0607 Lehigh Valley Air Pollution Control District I District Agency
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
0612 Lincoln-Mesa 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
0614 Livonia Bureau Of Inspections H City Agency
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
0617 Long Beach Department Of Public Health H City Agency
0618 Long Island Lighting Company J Private
0619 Lorain Air Air Pollution Control Agency J Private
0620 Lorain Department Of Public Service H City Agency
0621 Los Angeles County APCD I District Agency
0622 Loudoun County Health Department G County Agency
0623 Louisiana Pacific J Private
0549 Louisville, KY Metro Air Pollution Control District H City Agency
0624 Lowa Public Service Company J Private
1311 Loyola University Chicago K Institution
0625 Lubbock City-County Health Department G County Agency
0626 Luzenzac America, Inc J Private
0627 Lynchburg Water Department H City Agency
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
0632 Madison Department Of Public Health H City 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
0644 Marietta Board Of Health H City Agency
0645 Mariposa County APCD I District Agency
0646 Marquette Board Of Light And Power J Private
0647 Marshall University, Department Of Chemistry K Institution
0648 Marshall-Harrison County Health District G County Agency
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
1210 Martins Ferry Health Department H City Agency
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
0659 Maryland State Division Of Air Quality Control F State Agency
0660 Mass Dept Environmental Protection-Div Air Quality Control F State Agency
0661 Massachusetts Muncipal Wholesale Electric Company J Private
0662 Massachusetts Port Authority J Private
0663 Master Metals J Private
0664 Matagorda County Health Department G County Agency
0665 Mauna Loa Observatory J Private
0666 McCracken County Health Department G County Agency
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
0671 Medina County Joint Vocational School J Private
0672 Melvin Simon & Associates, Inc - Mall Of America 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
0678 Mercer County Health Department G County 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
0680 Metronics Associates J Private
0681 Metropolitan Airports Commission H City Agency
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
0684 Michigan Department Of Public Health F State Agency
0685 Michigan Dept Of Environmental Quality-Air Quality Division F State Agency
0686 Michigan Disposal, Inc J Private
0687 Michigan Recovery Systems J Private
0688 Michigan Standard Alloys J Private
0689 Michigan State Department Of Conservation F State Agency
0690 Michigan Tech University K Institution
0691 Mid Williamette Valley Air Pollution Authority G County Agency
1293 Mid-American Energy, IA J Private
0692 Midland Cogeneration Venture J Private
0693 Midwest Energy Resources Company J Private
0694 Mineral County Health Department G County Agency
0695 Mineral Hill Mine J Private
0696 Mingo Junction Air Pollution Department H City Agency
0697 Minneapolis Air Pollution Control Division H City Agency
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
0699 Minnesota Department Of Transportation F State Agency
0700 Minnesota Pollution Control Agency, Division Of Air Quality F State Agency
0701 Minnesota Power And Light Company J Private
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
0705 Mitre Corporation J Private
650 Moapa Band of Paiute Indians T Tribal
0706 Mobil Chemical Company J Private
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
0712 Monroe County Health Department G County Agency
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
0723 Montgomery County, AL Health Department 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
0727 Morton Grove Air Pollution Control Board H City Agency
0728 Morton Salt J Private
1363 Mountain Cement J Private
1376 Mountain Studies Institute K Institution
0729 Mountain, Inc J Private
0730 Mt Dept Of Environmental Quality, Air Quality Division F State Agency
0731 Mummy Mountain Observatory J Private
0732 Municipality Of Anchorage Air Pollution Control Agency G County Agency
0733 Murray & Trettle, Inc J Private
0734 Muscatine Power & Water Company J Private
0735 Muskegon County Health Department G County Agency
0737 N G K Metals Reading, PA J Private
1411 NAQS - Environmental Experts 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
0796 NTIC Richfield Company J Private
0797 NY State Lead Sampling Lab F State Agency
0798 NYSDEC Toxics Data Laboratory F State Agency
1245 NYU - School Of Medicine K Institution
0738 Nassau County Department Of Health G County Agency
0739 Nassau County Health Department G County Agency
0740 Natchez Fire Department H City Agency
0741 National Bureau Of Standards N Fed Nonmilitary
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
0748 Natural Gas Pipeline Company J Private
0749 Natural Resource Ecology Laboratory J Private
780 Navajo Nation, AZ, NM, UT T Tribal
1269 Naval Surface Warfare Center, Crane Division, IN L Military
0751 Ndo Utilities Commission H City Agency
0752 Nebraska Department Of Environmental Control F State Agency
0753 Nebraska Public Power Company J Private
0754 Needles City Hall H City Agency
0755 Nekoosa Packaging Company J Private
0756 Network Environmental, Inc J Private
0757 Nevada Division Of Environmental Protection F State Agency
0758 New Albany And Floyd County Health Department H City Agency
0759 New Butte Mining Incorporated J Private
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
0766 New Rochelle Department Of Public Health H City 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
0769 Newport News Department Of Public Works H City Agency
182 Nez Perce Tribe, Idaho T Tribal
0770 Niagara County Department Of Air Pollution Control G County Agency
0771 Noranda, Inc J Private
0772 Norfolk Health Department H City Agency
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
0777 North Carolina State Board Of Health F State Agency
0778 North Carolina State University K Institution
0779 North Carolina Western Regional Air Pollution Control Agency I District Agency
0780 North Central District Health Department 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
0783 North Dakota State University K Institution
1454 North East Ohio PQAO F State Agency
0784 North Ohio Valley Air Authority F State Agency
0785 Northeast Colorado Health Department 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
0793 Northrop Services 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
0800 O.M. Scott Company J Private
0908 OCI Wyoming L.P. J Private
0825 OWR Grace J Private
0801 Office Of Director Of Public Works-Greensboro H City Agency
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
0804 Ohio Edison Company J Private
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
0813 Olin Corporation J Private
0814 Olmstead County Health Department G County Agency
0815 Olympic Air Pollution Control Authority I District Agency