| <Agency Code> | <Agency Desc> | <Agency Type> | <Agency Type Desc> |
|---|---|---|---|
| 1303 | Direccion General De Ecoligia Gobierno del Estado de Baja California | Z | OTHER |
| 1305 | Dios Dado Environmental Ltd., Selma, TX | J | PRIVATE |
| 1340 | Didion Milling, Inc., WI | J | PRIVATE |
| 0305 | Diamond Shamrock Corporation | J | PRIVATE |
| 1391 | Devon Energy | J | PRIVATE |
| 0304 | Detroit Metro Airport | J | PRIVATE |
| 0303 | Detroit Edison Company | J | PRIVATE |
| 0302 | Detroit Bureau of Air Pollution Control | H | CITY AGENCY |
| 1207 | Desert Research Institute | J | PRIVATE |
| 0301 | Derenzo and Associates | J | PRIVATE |
| 0298 | Department of Health County Of Westchester | G | COUNTY AGENCY |
| 0297 | Denver Research Institute | J | PRIVATE |
| 0296 | Delta Chemicals, Searsport | J | PRIVATE |
| 0295 | Delco Remy | J | PRIVATE |
| 0294 | Delaware Dept Natural Resources and Environmental Control | F | STATE AGENCY |
| 0293 | Delaware County Health Department | G | COUNTY AGENCY |
| 0292 | Delaware Air Pollution Authority State Board of Health | F | STATE AGENCY |
| 0291 | Del Rio-Val Verde Health Department | G | COUNTY AGENCY |
| 0290 | Deerfield Speciality Papers | J | PRIVATE |
| 0289 | Decker Coal Company | J | PRIVATE |
| 0288 | Dearborn Department of Public Works | H | CITY AGENCY |
| 0287 | Dayton Regional Air Pollution Control Agency | H | CITY AGENCY |
| 0286 | Dayton Power and Light | J | PRIVATE |
| 0285 | Dayton Bureau of Combustion Control | H | CITY AGENCY |
| 0284 | Davies County Health Department | G | COUNTY AGENCY |
| 0283 | David E. Woodman | J | PRIVATE |
| 0282 | Danville Health Department | H | CITY AGENCY |
| 0281 | Dane County Department of Public Works | G | COUNTY AGENCY |
| 0280 | Dames & Moore, Inc | J | PRIVATE |
| 0279 | Dakota Gasification Company | J | PRIVATE |
| 0278 | Dairyland Power Cooperative | J | PRIVATE |
| 0277 | Dairyland Greyhound Park | J | PRIVATE |
| 1353 | DATA CHEM Laboratories, Inc., OH | J | PRIVATE |
| 0273 | D.I. Corporation/James River, Old Town | J | PRIVATE |
| 1263 | D. A. B. Industries, Inc., OH | J | PRIVATE |
| 0271 | Cyprus Northshore Mining | J | PRIVATE |
| 0270 | Cyprus Industrial Minerals Company | J | PRIVATE |
| 0269 | Cyanokem, Inc | J | PRIVATE |
| 0268 | Cumberland Forestry Division | H | CITY AGENCY |
| 1359 | Crocker Nuclear Laboratory, University of California | C | EPA HQ EFFECTS |
| 0266 | Crane and Company, Inc | J | PRIVATE |
| 0265 | Crandon Mining Company | J | PRIVATE |
| 0264 | Covington-Kenton County Health Department | G | COUNTY AGENCY |
| 1310 | County of Suffolk (NY) Division of Environmental Quality | G | COUNTY AGENCY |
| 0263 | Corpus Christi-Nueces County Department of Public Health | G | COUNTY AGENCY |
| 0262 | Core Laboratories, Inc | J | PRIVATE |
| 0261 | Cordero Mining Company | J | PRIVATE |
| 0260 | Cool Water Coal Gasification Programs | J | PRIVATE |
| 0259 | Cook Inlet Air Resources Management District | I | DISTRICT AGENCY |
| 0258 | Cook County Department of Environmental Control | G | COUNTY AGENCY |
| 0257 | Continental Lime | J | PRIVATE |
| 0256 | Consumers Power Company | J | PRIVATE |
| 0255 | Consolidated Papers | J | PRIVATE |
| 0254 | Consolidated Aluminum Company | J | PRIVATE |
| 0253 | Conservation Consultants, Inc | J | PRIVATE |
| 1395 | Consci LTD | J | PRIVATE |
| 0252 | Connecticut Department of Health | F | STATE AGENCY |
| 0251 | Connecticut Department of Environmental Protection | F | STATE AGENCY |
| 0249 | Concordia Parish Health Unit | G | COUNTY AGENCY |
| 0248 | Con Agra | J | PRIVATE |
| 1315 | Computer Science Corporation | J | PRIVATE |
| 0247 | Colusa County APCD | I | DISTRICT AGENCY |
| 0246 | Columbus Division of Smoke Regulation And Inspection | H | CITY AGENCY |
| 0245 | Columbia-Williamette Air Pollution Authority | I | DISTRICT AGENCY |
| 0244 | Columbia Falls Aluminum | J | PRIVATE |
| 0243 | Columbia County Health Department | G | COUNTY AGENCY |
| 1382 | Columbia Analytical Services | P | EPA REGION |
| 0242 | Colt Industries-Beloit | J | PRIVATE |
| 1389 | Colorado State University | J | PRIVATE |
| 0240 | Colorado Department of Public Health And Environment | F | STATE AGENCY |
| 0241 | Colorado Department of Highways | F | STATE AGENCY |
| 1380 | Colorado Bureau of Land Management | S | GEMS |
| 1225 | Collier County Pollution Control Department | G | COUNTY AGENCY |
| 0239 | College of Staten Island | K | INSTITUTION |
| 0238 | Coldwater Board Of Public Utilities | J | PRIVATE |
| 0237 | Cogeneration Management Company | J | PRIVATE |
| 0236 | Cochise County Health Department | G | COUNTY AGENCY |
| 0235 | Coca Mines, Inc | J | PRIVATE |
| 0234 | Clifton Board Of Health | H | CITY AGENCY |
| 0233 | Cleveland-Cliffs Iron Company | J | PRIVATE |
| 0232 | Cleveland Public Schools | K | INSTITUTION |
| 0231 | Cleveland Department Of Health And Welfare | H | CITY AGENCY |
| 0230 | Cleveland County Air Pollution Control Agency | G | COUNTY AGENCY |
| 0229 | Cleveland Air Pollution Control Agency | H | CITY AGENCY |
| 0228 | Clemson Agriculture College & US Dept Of Agriculture | K | INSTITUTION |
| 0226 | Clark County, NV DAQEM | G | COUNTY AGENCY |
| 0225 | Clark County, IN Health Department | G | COUNTY AGENCY |
| 0227 | Clark County, AZ Health District | G | COUNTY AGENCY |
| 0224 | City-County Of Denver Health Department | G | COUNTY AGENCY |
| 0222 | City of York Department of Health | H | CITY AGENCY |
| 0221 | City of Utica Department of Health | H | CITY AGENCY |
| 0220 | City of Toledo, Environmental Services Division | H | CITY AGENCY |
| 0219 | City of Tampa Department of Sanitary Sewers | H | CITY AGENCY |
| 0218 | City of Stratford Department of Health | H | CITY AGENCY |
| 0217 | City of Stamford Department of Health | H | CITY AGENCY |
| 0216 | City of Schenectady Health Department | H | CITY AGENCY |
| 0215 | City of Roanoke, Department of Air Pollution | H | CITY AGENCY |
| 0214 | City of Richmond, Bureau of Air Pollution Control | H | CITY AGENCY |
| 0213 | City of Richfield | H | CITY AGENCY |
| 0212 | City of Norwalk Department of Health | H | CITY AGENCY |
| 0211 | City of North Chicago | H | CITY AGENCY |
| 0210 | City of New York Department of Environmental Protection | H | CITY AGENCY |
| 0209 | City of New Haven Department of Health | H | CITY AGENCY |
| 0208 | City of New Britain Department of Health | H | CITY AGENCY |
| 0207 | City of Muncie | H | CITY AGENCY |
| 0206 | City of Moorhead Healht Department | H | CITY AGENCY |
| 0205 | City of Milwaukee | H | CITY AGENCY |
| 0204 | City of Milford Department of Health | H | CITY AGENCY |
| 0203 | City of Milbank | H | CITY AGENCY |
| 0202 | City of Middletown Department of Health | H | CITY AGENCY |
| 0201 | City of Meriden Department of Health | H | CITY AGENCY |
| 0544 | City of Jacksonville Environmental Quality Division | H | CITY AGENCY |
| 0300 | City of Huntsville, Div of Natural Resources | H | CITY AGENCY |
| 0200 | City of Houston Health Department | H | CITY AGENCY |
| 0199 | City of Greenwich Department of Health | H | CITY AGENCY |
| 0198 | City of Granite City | H | CITY AGENCY |
| 0197 | City of Ft Collins, Colorado Environmental Health | H | CITY AGENCY |
| 1360 | City of Frisco | L | MILITARY |
| 0335 | City of El Paso-Air Quality Program | G | COUNTY AGENCY |
| 0196 | City of Dallas Air Pollution Control Section | H | CITY AGENCY |
| 0195 | City of Columbus Division of Electricity | H | CITY AGENCY |
| 0194 | City of Columbus Air Pollution Control | H | CITY AGENCY |
| 0193 | City of Colorado Springs | H | CITY AGENCY |
| 0192 | City of Cleveland Division of Air Pollution Control | H | CITY AGENCY |
| 0191 | City of Cincinnati Division of Air Pollution Control | H | CITY AGENCY |
| 0190 | City of Chattanooga | H | CITY AGENCY |
| 0189 | City of Bristol Department of Health | H | CITY AGENCY |
| 0188 | City of Bridgeport Department of Health | H | CITY AGENCY |
| 0187 | City of Bloomington | H | CITY AGENCY |
| 0186 | City of Bangor | H | CITY AGENCY |
| 0185 | City of Austin, TX | H | CITY AGENCY |
| 1358 | City of Aspen, CO | H | CITY AGENCY |
| 0223 | City University of New York, CUNY | K | INSTITUTION |
| 1339 | Citation Corp., WI | J | PRIVATE |
| 0184 | Cincinnati Bureau Air Pollution Control & Heating Inspection | H | CITY AGENCY |
| 0183 | Cianbro/Dragon Cement, Thomaston | J | PRIVATE |
| 1396 | Chippewa Sand Company, LLC | J | PRIVATE |
| 0182 | Chippewa County Health Department | G | COUNTY AGENCY |
| 0181 | Chicago Department Of Consumer Services | H | CITY AGENCY |
| 0180 | Chicago Department Of Air Pollution Control | H | CITY AGENCY |
| 0179 | Chevron | J | PRIVATE |
| 0178 | Chevrolet Motor Division | J | PRIVATE |
| 0177 | Chev Saginaw Metals Casting Plant | J | PRIVATE |
| 1334 | Chester LabNet. | J | PRIVATE |
| 0176 | Chester Bureau Of Health | H | CITY AGENCY |
| 0175 | Cherry Hill Board Of Health | H | CITY AGENCY |
| 0174 | Cherokee County Health Department | G | COUNTY AGENCY |
| 0173 | Chen Northern Labs | J | PRIVATE |
| 0172 | Chemetco | J | PRIVATE |
| 0171 | Chem-Met | J | PRIVATE |
| 0170 | Chattanooga-Hamilton County Air Pollution Control | G | COUNTY AGENCY |
| 0169 | Charlotte Health Department | H | CITY AGENCY |
| 0168 | Charleston Federal Building | H | CITY AGENCY |
| 0167 | Charleston County Health Department | G | COUNTY AGENCY |
| 0166 | Champion-Hoerner Waldorf | J | PRIVATE |
| 0165 | Champion International Corporation | J | PRIVATE |
| 0163 | Central Wayne Co. Sanitation Authority | J | PRIVATE |
| 0162 | Central Maine Power Company, Maine Office, Augusta | J | PRIVATE |
| 0161 | Central Illinois Light Company | J | PRIVATE |
| 0160 | Central Foundry | J | PRIVATE |
| 0159 | Central Analytical Lab | J | PRIVATE |
| 0158 | Centerior Energy | J | PRIVATE |
| 1326 | Center for Lab Science RJ Lee Grp Inc/Columbia Basin Col. | K | INSTITUTION |
| 1267 | Center For Disease Control | N | FED NONMILITARY |
| 0157 | Centennial Minerals | J | PRIVATE |
| 1233 | Cenex Harvest States - Superior, WI | J | PRIVATE |
| 0156 | Casper-Natrona County Health Department | G | COUNTY AGENCY |
| 0155 | Cascade County Air Pollution Control | G | COUNTY AGENCY |
| 0154 | Cascade City-County Health Department | G | COUNTY AGENCY |
| 0153 | Carter Mining Company | J | PRIVATE |
| 0152 | Carborundum | J | PRIVATE |
| 1307 | Capitol Area Council of Governments, TX | I | DISTRICT AGENCY |
| 0151 | Canton City Health Department Air Pollution Control | H | CITY AGENCY |
| 0150 | Campbell Soup | J | PRIVATE |
| 0149 | Camden County Health Department | G | COUNTY AGENCY |
| 0148 | Camden Bureau Of Fire Department Of Public Safety | H | CITY AGENCY |
| 0147 | Cambria Co Envir Resources Dept Bureau Air Quality & Noise | G | COUNTY AGENCY |
| 0146 | California Institute Of Technology | K | INSTITUTION |
| 0145 | California Air Resources Board | F | STATE AGENCY |
| 0144 | Calhoun County Health Department | G | COUNTY AGENCY |
| 0143 | Calcasieu Parish Health Unit | G | COUNTY AGENCY |
| 0142 | Calaveras County Health Department | G | COUNTY AGENCY |
| 0141 | Caddo Parish-Shreveport Health Unit | G | COUNTY AGENCY |
| 0140 | Cabell Huntington Health Department | G | COUNTY AGENCY |
| 1304 | CIRA, Colorado State University | K | INSTITUTION |
| 0164 | CH2M Hill | J | PRIVATE |
| 1386 | CGI Federal | J | PRIVATE |
| 0139 | C.T. Main, Inc, Boston, MA | J | PRIVATE |
| 0138 | Butte-Silver Bow County Health Department | G | COUNTY AGENCY |
| 0137 | Butte County APCD | I | DISTRICT AGENCY |
| 0136 | Business Health Management Environmental Laboratory | J | PRIVATE |
| 0135 | Burns And Mcdonnell Engineering Company | J | PRIVATE |
| 0134 | Burlington Northern Railroad Company | J | PRIVATE |
| 0133 | Burgess & Niple, Limited | J | PRIVATE |
| 0132 | Bunker Hill | J | PRIVATE |
| 0131 | Buncombe County Health Department | G | COUNTY AGENCY |
| 0130 | Buick Motor Division | J | PRIVATE |
| 0129 | Bryce Canyon National Park | N | FED NONMILITARY |
| 0128 | Brush-Wellman | J | PRIVATE |
| 0127 | Brunswick Naval Air Station, Brunswick | L | MILITARY |
| 0126 | Bruce Carter & Associates | J | PRIVATE |
| 0125 | Brownwood-Brown County Health Department | G | COUNTY AGENCY |
| 0124 | Browning Ferris Industries | J | PRIVATE |
| 0123 | Brown Printing Central | J | PRIVATE |
| 0122 | Broward County Health Department | G | COUNTY AGENCY |
| 0121 | Broward County Environmental Protection Department | G | COUNTY AGENCY |
| 0120 | Bristol Health Department | H | CITY AGENCY |
| 0119 | Briess Industries, Inc | J | PRIVATE |
| 0118 | Brewster Phosphates | J | PRIVATE |
| 0117 | Brevard County Office Of Natural Resources | G | COUNTY AGENCY |
| 0116 | Brevard County Health Department | G | COUNTY AGENCY |
| 0115 | Brc/Rasmussen | J | PRIVATE |
| 0114 | Braun Intertec | J | PRIVATE |
| 0113 | Brand S Lumber Company | J | PRIVATE |
| 0112 | Bowater Southern Paper Company | J | PRIVATE |
| 0111 | Boulder City-County Health Department | G | COUNTY AGENCY |
| 0110 | Boston Edison Company | J | PRIVATE |
| 0109 | Borden Chemical Company | J | PRIVATE |
| 0108 | Boliden Resources Inc, T12r8 | J | PRIVATE |
| 0107 | Boliden Intertrade Inc | J | PRIVATE |
| 0106 | Boise Cascade Company | J | PRIVATE |
| 0105 | Boc Flint | J | PRIVATE |
| 1364 | Black hills Power | J | PRIVATE |
| 1367 | Black Butte Coal Company | J | PRIVATE |
| 0103 | Black And Vetch Consulting Engineers | J | PRIVATE |
| 0102 | Bison Engineering | J | PRIVATE |
| 0101 | Bismarck Department Of Health And Building Inspection | H | CITY AGENCY |
| 0100 | Binghamton Bureau Of Health | H | CITY AGENCY |
| 0099 | Billings Laurel Air Quality Technical Committee | I | DISTRICT AGENCY |
| 0098 | Big Rivers Electric Corporation | J | PRIVATE |
| 0097 | Bi-City Health Bureau | H | CITY AGENCY |
| 0095 | Bethlehem Steel Corporation | J | PRIVATE |
| 0094 | Bethlehem Bureau Of Health | H | CITY AGENCY |
| 0093 | Berlin Foundry Corporation | J | PRIVATE |
| 1327 | Benton Clean Air Authority, WA | I | DISTRICT AGENCY |
| 0092 | Benham Holway Power Group | J | PRIVATE |
| 0091 | Beker Industries | J | PRIVATE |
| 0090 | Bedford Park Air Pollution Control Board | H | CITY AGENCY |
| 0089 | Beaunit Fibers | J | PRIVATE |
| 0088 | Bearpaw Energy Inc | J | PRIVATE |
| 0087 | Bay County Health Department | G | COUNTY AGENCY |
| 0086 | Bay Area Air Quality Management District | I | DISTRICT AGENCY |
| 0085 | Battelle Northwest Laboratories | J | PRIVATE |
| 0084 | Battelle Memorial Institute | J | PRIVATE |
| 0083 | Bath Iron Works, Bath, Me | J | PRIVATE |
| 0082 | Batelle | J | PRIVATE |
| 0081 | Basin Creek Mining | J | PRIVATE |
| 0080 | Basic, Inc | J | PRIVATE |
| 0079 | Barr Engineering Company | J | PRIVATE |
| 0078 | Barmet Aluminum Corporation | J | PRIVATE |
| 0077 | Barkley And Dexter Labs, Inc | J | PRIVATE |
| 0076 | Baltimore Gas And Electric Company | J | PRIVATE |
| 0075 | Baltimore County Health Department | G | COUNTY AGENCY |
| 0074 | Baltimore County Division Of Air Pollution Control | G | COUNTY AGENCY |
| 0073 | Baltimore City Health Department | H | CITY AGENCY |
| 0072 | Baldwin County Health Department | G | COUNTY AGENCY |
| 0096 | BGI- Billings Generation Incorporated | J | PRIVATE |
| 0068 | Austin-Travis County Health Department | G | COUNTY AGENCY |
| 0071 | Atmospheric Research Institute | J | PRIVATE |
| 1221 | Atmospheric Analysis & Consulting Inc. Ventura, CA | J | PRIVATE |
| 0067 | Atlantic Gelatine | J | PRIVATE |
| 0066 | Associated Electric | J | PRIVATE |
| 1333 | Aspen Consulting & Testing | J | PRIVATE |
| 0065 | Ashland-Boyd County Health Department | G | COUNTY AGENCY |
| 0064 | Ashland Oil | J | PRIVATE |
| 0063 | Ash Grove Cement | J | PRIVATE |
| 0062 | Asarco, Inc | J | PRIVATE |
| 0061 | Asarco | J | PRIVATE |
| 0060 | Artic Health Research Laboratory | N | FED NONMILITARY |
| 0058 | Armco Steel Company | J | PRIVATE |
| 0057 | Armco | J | PRIVATE |
| 0056 | Arlington Co Environmental Health Bureau Dept Human Resource | G | COUNTY AGENCY |
| 0055 | Arkansas Department Of Environmental Quality | F | STATE AGENCY |
| 0054 | Arizona Portland Cement Company | J | PRIVATE |
| 0053 | Arizona Department Of Environmental Quality | F | STATE AGENCY |
| 0052 | Area Oil Shale Supervisor Office | J | PRIVATE |
| 0051 | Arco Coal Company | J | PRIVATE |
| 0050 | Arco | J | PRIVATE |
| 0049 | Archbold Biological Station | I | DISTRICT AGENCY |
| 1350 | Arch Coal Company, WY | J | PRIVATE |
| 0048 | Applied Meteorology, Inc | J | PRIVATE |
| 0047 | Applied Environmental Consultants, Inc | J | PRIVATE |
| 0046 | Appleton Papers Incorporated | J | PRIVATE |
| 0045 | Appleton Health Department | H | CITY AGENCY |
| 0044 | Appalachian State University | K | INSTITUTION |
| 0043 | Appalachian Mountain Club | J | PRIVATE |
| 0042 | Antelope Valley APCD | I | DISTRICT AGENCY |
| 0041 | Antelope Coal Company | J | PRIVATE |
| 0040 | Anne Arundel County Department Of Health | G | COUNTY AGENCY |
| 0039 | Anderson Air Pollution Control Department | H | CITY AGENCY |
| 1347 | Anadarko, WY | J | PRIVATE |
| 0038 | Anaconda Minerals Company | J | PRIVATE |
| 0037 | Anaconda Copper Company | J | PRIVATE |
| 0036 | Anaconda Aluminum Company | J | PRIVATE |
| 0035 | Amoco Oil Company | J | PRIVATE |
| 0034 | Amoco | J | PRIVATE |
| 0033 | American Natural Gas | J | PRIVATE |
| 0070 | American Municipal Power-Ohio, Inc | J | PRIVATE |
| 0032 | American Enka Company | J | PRIVATE |
| 0031 | American Electric Power | J | PRIVATE |
| 0030 | American Crystal Sugar Company | J | PRIVATE |
| 0029 | American Colloid | J | PRIVATE |
| 0028 | Amerada Hess | J | PRIVATE |
| 1224 | Ambient Air Services, Inc. | J | PRIVATE |
| 0027 | Amax Coal Company | J | PRIVATE |
| 0026 | Amarillo Bi-City-County Health Department | G | COUNTY AGENCY |
| 0025 | Amador County APCD | I | DISTRICT AGENCY |
| 0024 | Aluminum Company Of America | J | PRIVATE |
| 0023 | Altoona Department Of Water Parks And Public Property | H | CITY AGENCY |
| 0022 | Allied Corporation-Moncure Plant | J | PRIVATE |
| 0021 | Allegheny County,PA Health Department | G | COUNTY AGENCY |
| 0020 | Allegany County Health Department | G | COUNTY AGENCY |
| 0019 | Aleyska Pipeline Service Company | J | PRIVATE |
| 0018 | Alexandria Health Department | H | CITY AGENCY |
| 0017 | Albuquerque Environmental Health Department, Air Quality Division | H | CITY AGENCY |
| 0016 | Albright College | K | INSTITUTION |
| 0015 | Alaska Department Of Environmental Conservation | F | STATE AGENCY |
| 0014 | Alachua County Pollution Control District | G | COUNTY AGENCY |
| 1223 | Alachua County Environmental Protection Department | G | COUNTY AGENCY |
| 0013 | Al Dept Of Env Mgt | F | STATE AGENCY |
| 0012 | Akron Regional Air Pollution Control Agency | H | CITY AGENCY |
| 0011 | Akron Department Of Health | H | CITY AGENCY |
| 1300 | Air ToxicsLimited, CA | J | PRIVATE |
| 0010 | Air Sciences Incorporated | J | PRIVATE |
| 0009 | Air Resource Specialists, Inc | J | PRIVATE |
| 0069 | Air Quality Services | J | PRIVATE |
| 0008 | Air Quality Consultants, Inc | J | PRIVATE |
| 0007 | Air Pollution Control Division Of Water And Air Resources | F | STATE AGENCY |
| 0006 | Affiliated Environmental Services, Inc | J | PRIVATE |
| 0005 | Aeromet Engineering, Inc | J | PRIVATE |
| 1361 | ARA, Atmospheric Research and Analysis | J | PRIVATE |
| 1317 | APPTIS, Inc. | J | PRIVATE |
| 0345 | AECOM | J | PRIVATE |
| 0004 | ADEM - Mobile (Field Office) | G | COUNTY AGENCY |
| 1244 | ABT Associates, Inc. | J | PRIVATE |
| 0003 | AAT Labs, Inc | J | PRIVATE |
| 0002 | A. E. Staly Company | J | PRIVATE |
| 1211 | A K Steel | J | PRIVATE |
| 0001 | 3M Chemolite | J | PRIVATE |