----

|                                           |   |            |   | Other      Names                             |
|------------------------------------------------|--------|-----------------|--------|----------------------------------------------|
|                                           |   | State      of   |   | Under      Which                             |
|                                           |   | Incorporation/  |   | Conducts                                     |
| Subsidiary                                     |   | Organization    |   | Business                                     |
| ADVANCED      SYSTEMS PORTABLE RESTROOMS, INC. |   | Oregon          |   | Advanced      Mobile Storage                 |
|                                           |   |            |   | Advanced      Systems Portable               |
|                                           |   |            |   |   Restrooms                        |
|                                           |   |            |   | McDonald      Portable Toilets               |
| AMADOR      SERVICES, LLC                      |   | California      |   |                                         |
| AMERICAN      DISPOSAL COMPANY, INC.           |   | Washington      |   |                                         |
| AMERICAN      SANITARY SERVICE, INC.           |   | Oregon          |   |                                         |
| AMERICAN      WEST LEASING, INC.               |   | Oregon          |   |                                         |
| ARROW      SANITARY SERVICE, INC.              |   | Oregon          |   | Arrow      Sanitary Service                  |
|                                           |   |            |   | Oregon      Paper Fiber                      |
| BITUMINOUS      RESOURCES, INC.                |   | Kentucky        |   |                                         |
| BROADACRE      LANDFILL, INC.                  |   | Colorado        |   | Pueblo      Landfill and                     |
|                                           |   |            |   |    Recycling      Center      |
| BUTLER      COUNTY LANDFILL, INC.              |   | Nebraska        |   |                                         |
| CAMINO      REAL ENVIRONMENTAL CENTER, INC.    |   | New      Mexico |   |                                         |
| COLD      CANYON LANDFILL, INC.                |   | California      |   | Cold      Canyon                             |
|                                           |   |            |   |    Processing      Facility   |
|                                           |   |            |   | Cold      Canyon Recycling                   |
| COLUMBIA      RESOURCE CO., LP                 |   | Washington      |   |                                         |
| COMMUNITY      REFUSE DISPOSAL, INC.           |   | Nebraska        |   |                                         |
| CONTRACTORS      WASTE SERVICES, INC.          |   | Kentucky        |   |                                         |
| CORRAL      DE PIEDRA LAND COMPANY             |   | California      |   |                                         |
| CURRY      TRANSFER AND RECYCLING, INC.        |   | Oregon          |   | City      Transfer                           |
|                                           |   |            |   |    &      Recycling       |
|                                           |   |            |   | County      Transfer                         |
|                                           |   |            |   |    &      Recycling       |
|                                           |   |            |   | Country      Transfer                        |
|                                           |   |            |   |    &      Recycling       |
|                                           |   |            |   | Extra      Mile Disposal                     |
|                                           |   |            |   |    &      Hauling         |
|                                           |   |            |   | Harrell's      Septic                        |
|                                           |   |            |   | Roto-Rooter      of                          |
|                                           |   |            |   |    Curry      County          |
|                                           |   |            |   | Sandy's      Disposal Service                |
|                                           |   |            |   | Westlane      Disposal                       |
| DM      DISPOSAL CO., INC.                     |   | Washington      |   | American      Portable                       |
|                                           |   |            |   |    Storage                    |
|                                           |   |            |   | D.M.      Recycling                          |
|                                           |   |            |   | Superior      Refuse                         |
|                                           |   |            |   |    Removal                    |
| DENVER      REGIONAL LANDFILL, INC.            |   | Colorado        |   |                                         |
| EL      PASO DISPOSAL, LP                      |   | Texas           |   | Caprock      Waste                           |
|                                           |   |            |   |    Services      Company, LLC |
|                                           |   |            |   | Waste      Wranglers                         |
| ELKO      SANITATION COMPANY                   |   | Nevada          |   | Waste      Connections of                    |
|                                           |   |            |   |    Nevada                     |
| EMPIRE      DISPOSAL, INC.                     |   | Washington      |   |                                         |
| ENVIRONMENTAL      TRUST COMPANY               |   | Tennessee       |   |                                         |
| EVERGREEN      DISPOSAL, INC.                  |   | Montana         |   |                                         |
| FINLEY-BUTTES      LIMITED PARTNERSHIP         |   | Oregon          |   | Finley      Buttes Landfill                  |
|                                           |   |            |   |    Company                    |
| FINNEY      COUNTY LANDFILL, INC.              |   | Delaware        |   |                                         |
| FRANK'S      SERVICE, INC.                     |   | Montana         |   |                                         |
| G&P      DEVELOPMENT, INC.                 |   | Nebraska        |   |                                         |
| GLACIER      DISPOSAL, L.L.C.                  |   | Montana         |   |                                         |
| HIGH      DESERT SOLID WASTE FACILITY, INC.    |   | New      Mexico |   |                                         |
| HORIZON      PROPERTY MANAGEMENT, LLC          |   | Colorado        |   |                                         |
| ISLAND      DISPOSAL, INC.                     |   | Washington      |   | Whidbey      Recycling                       |
|                                           |   |            |   |    Services                   |
| J      BAR J LAND, INC.                        |   | Nebraska        |   |                                         |
| KELLY'S      HAUL AWAY, INC.                   |   | Montana         |   |                                         |
| LAKESHORE      DISPOSAL, INC.                  |   | Idaho           |   |                                         |
| LAUREL      RIDGE LANDFILL, L.L.C.             |   | Delaware        |   |                                         |
| LEALCO,      INC.                              |   | Texas           |   | ABC      Waste Collection                    |
| LES'      COUNTY SANITARY, INC.                |   | Oregon          |   |                                         |
| MADERA      DISPOSAL SYSTEMS, INC.             |   | California      |   | Allied      Disposal                         |
|                                           |   |            |   |    Company                    |
|                                           |   |            |   | Bishop      Waste                            |
|                                           |   |            |   |    Disposal                   |
|                                           |   |            |   | Coastal      Rolloff Service                 |
|                                           |   |            |   | Riverdale      Disposal                      |
|                                           |   |            |   |    Service                    |
|                                           |   |            |   | Sierra      Disposal                         |
|                                           |   |            |   | Western      Johns                           |
| MAMMOTH      DISPOSAL COMPANY                  |   | California      |   |                                         |
| MANAGEMENT      ENVIRONMENTAL NATIONAL, INC.   |   | Washington      |   |                                         |
| MASON      COUNTY GARBAGE CO., INC.            |   | Washington      |   |                                         |
| MDSI      OF LA, INC.                          |   | California      |   |                                         |
| MILLENIUM      WASTE INCORPORATED              |   | Indiana         |   | Quad      Cities Landfill                    |
| MISSION      COUNTRY DISPOSAL                  |   | California      |   | Tri      City Disposal                       |
| MORRO      BAY GARBAGE SERVICE                 |   | California      |   |                                         |
| MURREY’S      DISPOSAL COMPANY, INC.     |   | Washington      |   | Olympic      Disposal                        |
| NEBRASKA      ECOLOGY SYSTEMS, INC.            |   | Nebraska        |   |                                         |
| NOBLES      COUNTY LANDFILL, INC.              |   | Minnesota       |   |                                         |
| NORTHERN      PLAINS DISPOSAL INC.             |   | Delaware        |   |                                         |
| NORTHWEST      CONTAINER SERVICES, INC.        |   | Oregon          |   |                                         |
| OKLAHOMA      CITY WASTE DISPOSAL, INC.        |   | Oklahoma        |   |                                         |
| OKLAHOMA      LANDFILL HOLDINGS, INC.          |   | Delaware        |   |                                         |
| OSAGE      LANDFILL, INC.                      |   | Oklahoma        |   |                                         |
| PIERCE      COUNTY LANDFILL MANAGEMENT, INC.   |   | Delaware        |   |                                         |

----

|       |   |           |   | Other      Names |
|------------|--------|----------------|--------|------------------|
|       |   | State      of  |   | Under      Which |
|       |   | Incorporation/ |   | Conducts         |
| Subsidiary |   | Organization   |   | Business         |

| PIERCE      COUNTY RECYCLING COMPOSTING & DISPOSAL, LLC |   | Washington |   | LRI                                           |
|-------------------------------------------------------------|--------|------------|--------|-----------------------------------------------|
| PSI      ENVIRONMENTAL SERVICES INC.                        |   | Indiana    |   | PSI      WASTE                                |
| PSI      ENVIRONMENTAL SYSTEMS, INC.                        |   | Indiana    |   | PSI      WASTE                                |
| R.A.      BROWNRIGG INVESTMENTS, INC.                       |   | Oregon     |   | Cascade      Disposal Company                 |
|                                                        |   |       |   | Cascade      Recycling Co.                    |
|                                                        |   |       |   | Kelvic      Disposal Co,                      |
|                                                        |   |       |   | Kelvic      Dropbox Company                   |
|                                                        |   |       |   | Sun      Country Disposal                     |
| RAILROAD      AVENUE DISPOSAL, LLC                          |   | Delaware   |   |                                          |
| RED      CARPET LANDFILL, INC.                              |   | Oklahoma   |   |                                          |
| RH      FINANCIAL CORPORATION                               |   | Washington |   |                                          |
| RURAL      WASTE MANAGEMENT, INC.                           |   | Oklahoma   |   |                                          |
| SAN      LUIS GARBAGE COMPANY                               |   | California |   | SLOCO      Recycles                           |
| SCOTT      SOLID WASTE DISPOSAL COMPANY                     |   | Tennessee  |   | TWM-Landfill                                  |
| SCOTT      WASTE SERVICES, LLC                              |   | Kentucky   |   |                                          |
| SEDALIA      LAND COMPANY                                   |   | Colorado   |   |                                          |
| SOUTH      COUNTY SANITARY SERVICE, INC.                    |   | California |   | Nipomo      Garbage                           |
|                                                        |   |       |   |    Company                     |
|                                                        |   |       |   | Nipomo      Recycling                         |
|                                                        |   |       |   |    Center                      |
| SOUTHERN      PLAINS DISPOSAL, INC.                         |   | Delaware   |   |                                          |
| SUNRISE      SANITATION, LLC                                |   | Oregon     |   |                                          |
| TACOMA      RECYCLING COMPANY, INC.                         |   | Washington |   |                                          |
| TENNESSEE      WASTE MOVERS, INC.                           |   | Delaware   |   | Volunteer      Landfill                       |
| THE      TRASH COMPANY, LLC                                 |   | Colorado   |   |                                          |
| WASCO      COUNTY LANDFILL, INC.                            |   | Delaware   |   | Republic      Services of                     |
|                                                        |   |       |   |    Oregon      I               |
| WASTE      CONNECTIONS MANAGEMENT SERVICES, INC.            |   | Delaware   |   |                                          |
| WASTE      CONNECTIONS OF ALABAMA, INC.                     |   | Delaware   |   | Competitive      Waste                        |
|                                                        |   |       |   |    Systems                     |
| WASTE      CONNECTIONS OF ARIZONA, INC.                     |   | Delaware   |   |                                          |
| WASTE      CONNECTIONS OF ARKANSAS, INC.                    |   | Delaware   |   |                                          |
| WASTE      CONNECTIONS OF CALIFORNIA, INC.                  |   | California |   | Amador      Disposal Service                  |
|                                                        |   |       |   | Betts      Disposal Service                   |
|                                                        |   |       |   | El      Dorado Disposal                       |
|                                                        |   |       |   |    Service                     |
|                                                        |   |       |   | GreenTeam                                     |
|                                                        |   |       |   | GreenTeam      of San Jose                    |
|                                                        |   |       |   | GreenWaste      of Tehama                     |
|                                                        |   |       |   | Mother      Lode Sani-Hut                     |
|                                                        |   |       |   | Sani-Hut      Portable                        |
|                                                        |   |       |   |   Toilets                           |
|                                                        |   |       |   | Western      El Dorado                        |
|                                                        |   |       |   |    Recovery      Systems       |
|                                                        |   |       |   | Westside      Sanitation                      |
| WASTE      CONNECTIONS OF COLORADO, INC.                    |   | Delaware   |   | All      Trash Service                        |
|                                                        |   |       |   | Community      Recycling                      |
|                                                        |   |       |   | Denver      Roll-Off Service                  |
|                                                        |   |       |   | El      Paso Disposal Services                |
|                                                        |   |       |   | Fremont      Disposal                         |
|                                                        |   |       |   | Horizon      Property Management              |
|                                                        |   |       |   | Platte      Valley Disposal                   |
|                                                        |   |       |   | Pueblo      Disposal                          |
|                                                        |   |       |   | Pueblo      Disposal &                    |
|                                                        |   |       |   |    Recycling      Service      |
|                                                        |   |       |   | Snowy      Peaks Trash                        |
|                                                        |   |       |   |    Company                     |
|                                                        |   |       |   | Solid      Waste Transfer                     |
|                                                        |   |       |   |    Services                    |
|                                                        |   |       |   | The      Trash Company                        |
|                                                        |   |       |   | Town      & Country                       |
|                                                        |   |       |   |    Disposal                    |
|                                                        |   |       |   | U.S.      Disposal                            |
|                                                        |   |       |   | U.S.      Disposal Services                   |
| WASTE      CONNECTIONS OF GEORGIA, INC.                     |   | Delaware   |   | Baxter      Waste Systems                     |
| WASTE      CONNECTIONS OF IDAHO, INC.                       |   | Indiana    |   | Mountain      Jack                            |
|                                                        |   |       |   |    Environmental      Services |
|                                                        |   |       |   | T,      T & R Enterprises                 |
|                                                        |   |       |   | Valley      Waste and Recycling               |
| WASTE      CONNECTIONS OF ILLINOIS, INC.                    |   | Delaware   |   | Millenium      Waste                          |
| WASTE      CONNECTIONS OF IOWA, INC.                        |   | Iowa       |   | EZ      Roll Off                              |
|                                                        |   |       |   | EZ      Roll Off Systems                      |
|                                                        |   |       |   | E-Z      Sanitation                           |
|                                                        |   |       |   | Frangenberg      Sanitation                   |
|                                                        |   |       |   | Huberg      Solid Waste                       |
|                                                        |   |       |   |    Management                  |
|                                                        |   |       |   | Millenium      Waste                          |
|                                                        |   |       |   | Stone      Roll-Off                           |
|                                                        |   |       |   | Stone      Sanitation                         |
|                                                        |   |       |   | Town      & Country                       |
|                                                        |   |       |   |    Disposal                    |
|                                                        |   |       |   | Whaley      Waste                             |
|                                                        |   |       |   |    Systems                     |
| WASTE      CONNECTIONS OF KANSAS, INC.                      |   | Delaware   |   | Anderson      Trash Service                   |
|                                                        |   |       |   | Best      Yet Refuse                          |
|                                                        |   |       |   | Collectia      LTD                            |
|                                                        |   |       |   | Dual      County                              |
|                                                        |   |       |   |    Sanitation                  |
|                                                        |   |       |   | Northend      Disposal                        |
|                                                        |   |       |   | R-Arrow                                       |
|                                                        |   |       |   | Salina      Waste Systems                     |

----

|       |   |           |   | Other      Names |
|------------|--------|----------------|--------|------------------|
|       |   | State      of  |   | Under      Which |
|       |   | Incorporation/ |   | Conducts         |
| Subsidiary |   | Organization   |   | Business         |

| WASTE      CONNECTIONS OF KENTUCKY, INC.                     |   | Delaware    |   | Corbin's      Disposal                        |
|--------------------------------------------------------------|--------|-------------|--------|-----------------------------------------------|
|                                                         |   |        |   |    Service                     |
|                                                         |   |        |   | Kentucky      Waste                           |
|                                                         |   |        |   |    Systems,      Inc.          |
|                                                         |   |        |   | Mid-State      Recycling                      |
|                                                         |   |        |   |    Waste      Systems          |
|                                                         |   |        |   | Mid-State      Waste                          |
|                                                         |   |        |   | Waste      Systems, Inc.                      |
| WASTE      CONNECTIONS OF LEFLORE, LLC                       |   | Mississippi |   |                                          |
| WASTE      CONNECTIONS OF MINNESOTA, INC.                    |   | Minnesota   |   | Hendrickson      Sanitation                   |
|                                                         |   |        |   | L      & L Sanitation                     |
|                                                         |   |        |   | Schaap      Sanitation                        |
|                                                         |   |        |   | Ulrich      Sanitation                        |
| WASTE      CONNECTIONS OF MISSISSIPPI DISPOSAL SERVICES, LLC |   | Mississippi |   |                                          |
| WASTE      CONNECTIONS OF MISSISSIPPI, INC.                  |   | Delaware    |   | Asco      Sanitation                          |
|                                                         |   |        |   | Best      Waste & Recycling               |
|                                                         |   |        |   | Best      Waste and Recycling                 |
|                                                         |   |        |   | Buck      Run Landfill                        |
|                                                         |   |        |   | Northeast      Mississippi                    |
|                                                         |   |        |   |    Regional      Landfill      |
|                                                         |   |        |   | Oxford      Waste                             |
|                                                         |   |        |   |    Services                    |
| WASTE      CONNECTIONS OF MISSOURI, INC.                     |   | Delaware    |   |                                          |
| WASTE      CONNECTIONS OF MONTANA, INC.                      |   | Delaware    |   | Bitterroot      Disposal                      |
|                                                         |   |        |   | Valley      Recycling                         |
|                                                         |   |        |   | Victor      Transfer                          |
| WASTE      CONNECTIONS OF NEBRASKA, INC.                     |   | Delaware    |   | Allied      Refuse Countryside Services       |
|                                                         |   |        |   | B&B      Sanitary Service                 |
|                                                         |   |        |   | Big      Red Roll Off                         |
|                                                         |   |        |   | Central      Waste                            |
|                                                         |   |        |   |    Disposal                    |
|                                                         |   |        |   | Community      Refuse                         |
|                                                         |   |        |   | Countryside      Services                     |
|                                                         |   |        |   | Duren      Sanitation                         |
|                                                         |   |        |   | J-D      Sanitation                           |
|                                                         |   |        |   | J&J      Sanitation                       |
|                                                         |   |        |   | Midwest      Refuse                           |
|                                                         |   |        |   |    Service      Commercial     |
|                                                         |   |        |   | Omega      Systems                            |
|                                                         |   |        |   | Papillion      Sanitation                     |
|                                                         |   |        |   | River      City Recycling                     |
|                                                         |   |        |   | Sanitation      Systems                       |
|                                                         |   |        |   | Saunders      County                          |
|                                                         |   |        |   |    Disposal                    |
|                                                         |   |        |   | Schaben      Sanitation                       |
|                                                         |   |        |   | Shrader      Refuse and                       |
|                                                         |   |        |   |    Recycling      Service      |
|                                                         |   |        |   |    Company                     |
|                                                         |   |        |   | The      Garbage                              |
|                                                         |   |        |   |    Company                     |
|                                                         |   |        |   | Ummel      Sanitation                         |
|                                                         |   |        |   | Wahoo      Sanitation                         |
| WASTE      CONNECTIONS OF NEW MEXICO, INC.                   |   | Delaware    |   | Silva      Sanitation                         |
|                                                         |   |        |   | Southwest      Disposal                       |
| WASTE      CONNECTIONS OF OKLAHOMA, INC.                     |   | Oklahoma    |   | Metropolitan      Waste                       |
|                                                         |   |        |   |    Services                    |
|                                                         |   |        |   | Oklahoma      Disposal                        |
|                                                         |   |        |   |    &      Sanitation       |
|                                                         |   |        |   | S-N-S      Disposal                           |
|                                                         |   |        |   | Waste      Connections                        |
| WASTE      CONNECTIONS OF OREGON, INC.                       |   | Oregon      |   | Ace      Sanicans                             |
|                                                         |   |        |   | Babe's      Garbage Service                   |
|                                                         |   |        |   | Bandon      Disposal &                    |
|                                                         |   |        |   |    Recycling                   |
|                                                         |   |        |   | Buck's      Sanitary                          |
|                                                         |   |        |   |    Service                     |
|                                                         |   |        |   | Clatskanie      Sanitary                      |
|                                                         |   |        |   |     Service               |
|                                                         |   |        |   | EWSI                                          |
|                                                         |   |        |   | Environmental      Waste                      |
|                                                         |   |        |   |    Systems                     |
|                                                         |   |        |   | Hank's      Septic Tank                       |
|                                                         |   |        |   |    Service                     |
|                                                         |   |        |   | Hood      River Garbage                       |
|                                                         |   |        |   |    Service                     |
|                                                         |   |        |   | Hood      River Recycling                     |
|                                                         |   |        |   |    &      Transfer Station |
|                                                         |   |        |   | Hudson      Portable                          |
|                                                         |   |        |   |    Toilet      Service         |
|                                                         |   |        |   | Hudson's      Garbage                         |
|                                                         |   |        |   |    Service                     |
|                                                         |   |        |   | Jack      Fleming Sanitary                    |
|                                                         |   |        |   |    Service                     |
|                                                         |   |        |   | Lebanon-Sweet      Home                       |
|                                                         |   |        |   |    Septic      Tank Service    |
|                                                         |   |        |   | Les'      Sanitary Service                    |
|                                                         |   |        |   | North      Bend Sanitation                    |
|                                                         |   |        |   |    Service                     |

----

|       |   |           |   | Other      Names |
|------------|--------|----------------|--------|------------------|
|       |   | State      of  |   | Under      Which |
|       |   | Incorporation/ |   | Conducts         |
| Subsidiary |   | Organization   |   | Business         |

|                                               |   |              |   | Public      Disposal and                   |
|----------------------------------------------------|--------|-------------------|--------|--------------------------------------------|
|                                               |   |              |   |    Recyling      Center     |
|                                               |   |              |   | Refuse      Removal                        |
|                                               |   |              |   | Sweet      Home                            |
|                                               |   |              |   |    Sanitation      Service  |
|                                               |   |              |   | Sweet      Home Transfer                   |
|                                               |   |              |   |    &      Recycling     |
|                                               |   |              |   | The      Dalles Disposal                   |
|                                               |   |              |   | The      Dalles Transfer                   |
|                                               |   |              |   |    Station                  |
|                                               |   |              |   | Wally's      Portable                      |
|                                               |   |              |   |    Restrooms                |
| WASTE      CONNECTIONS OF SOUTH DAKOTA, INC.       |   | South      Dakota |   | A      & C Keiffer Sanitation          |
|                                               |   |              |   | Art's      Garbage Service                 |
|                                               |   |              |   | Cook's      Wastepaper                     |
|                                               |   |              |   |    &      Recycling     |
|                                               |   |              |   | Dakota      Data Shred                     |
|                                               |   |              |   | Envirotech      Waste                      |
|                                               |   |              |   |    Services                 |
|                                               |   |              |   | Kieffer      Sanitation                    |
|                                               |   |              |   | Novak      Enterprises                     |
|                                               |   |              |   | Novak      Sanitary                        |
|                                               |   |              |   |    Service                  |
|                                               |   |              |   | Pierre      Recycling                      |
|                                               |   |              |   |    Center                   |
|                                               |   |              |   | Ron's      Dray                            |
|                                               |   |              |   | Sioux      Valley                          |
|                                               |   |              |   |    Sanitation      Service  |
|                                               |   |              |   | Steve's      Garbage                       |
|                                               |   |              |   |    Service                  |
|                                               |   |              |   | Van      Zee Sanitary                      |
|                                               |   |              |   |    Service                  |
|                                               |   |              |   | Walker      Refuse                         |
| WASTE      CONNECTIONS OF TENNESSEE, INC.          |   | Delaware          |   | Asco      Sanitation                       |
|                                               |   |              |   | Cumberland      Waste                      |
|                                               |   |              |   |    Disposal                 |
|                                               |   |              |   | LMP      Transportation                    |
|                                               |   |              |   |    Company                  |
|                                               |   |              |   | Ocoee      Environmental                   |
|                                               |   |              |   |    Services                 |
|                                               |   |              |   | Scott      Solid Waste                     |
|                                               |   |              |   | Snelson's      Trash Service               |
|                                               |   |              |   | Southern      Disposal                     |
| WASTE      CONNECTIONS OF TEXAS, LLC               |   | Delaware          |   | West      Texas Disposal                   |
| WASTE      CONNECTIONS OF THE CENTRAL VALLEY, INC. |   | California        |   | Environmental      Waste                   |
|                                               |   |              |   |    Management               |
|                                               |   |              |   | Kingsburg      Disposal                    |
|                                               |   |              |   |    Service                  |
| WASTE      CONNECTIONS OF UTAH, INC.               |   | Delaware          |   | City      Sanitation                       |
|                                               |   |              |   | Roche      & Sons                      |
| WASTE      CONNECTIONS OF WASHINGTON, INC.         |   | Washington        |   | Buchmann      Sanitation                   |
|                                               |   |              |   |    Service                  |
|                                               |   |              |   | Clark      County Disposal                 |
|                                               |   |              |   |    Group                    |
|                                               |   |              |   | Colfax      Recycling                      |
|                                               |   |              |   | Diamond      Fab and                       |
|                                               |   |              |   |    Welding      Service     |
|                                               |   |              |   | Empire      Disposal Hauling               |
|                                               |   |              |   | Hero                                       |
|                                               |   |              |   | Household      Environmental               |
|                                               |   |              |   |    Recycling      Operation |
|                                               |   |              |   | The      Disposal Group                    |
|                                               |   |              |   | Twin      City Sanitary                    |
|                                               |   |              |   |    Service                  |
|                                               |   |              |   | Vancouver      Sanitary                    |
|                                               |   |              |   |    Service                  |
| WASTE      CONNECTIONS OF WYOMING, INC.            |   | Delaware          |   | BW      Waste                              |
|                                               |   |              |   | Edwal      Services                        |
|                                               |   |              |   | Green      River Valley Refuse             |
| WASTE      CONNECTIONS TRANSPORTATION CO., INC.    |   | Oregon            |   |                                       |
| WASTE      SERVICES OF N.E. MISSISSIPPI, INC.      |   | Mississippi       |   |                                       |
| WASTE      SOLUTIONS GROUP OF SAN BENITO, LLC      |   | Delaware          |   |                                       |
| WEST      BANK ENVIRONMENTAL SERVICES, INC         |   | Indiana           |   | Westbank      Sanitation                   |
| WEST      COAST RECYCLING AND TRANSFER, INC.       |   | Oregon            |   | Public      Disposal and                   |
|                                               |   |              |   |    Recycling      Center    |
|                                               |   |              |   | Store-It                                   |
| WEST      VALLEY COLLECTION & RECYCLING, LLC   |   | California        |   |                                       |
| WYOMING      ENVIRONMENTAL SERVICES, INC.          |   | Indiana           |   |                                       |
| WYOMING      ENVIRONMENTAL SYSTEMS, INC.           |   | Indiana           |   | Wyoming      Waste                         |
|                                               |   |              |   |    Systems                  |