| Hanford Tank Waste Operations & Closure, LLC | Richland | WA | $1.78B |
| Mid-america Conversion Services, LLC | Lexington | KY | $606M |
| Isotek Systems, LLC | Oak Ridge | TN | $332M |
| Clean Harbors Environmental Services Inc. | Norwell | MA | $118M |
| Arcwood Environmental - Joplin, Inc. | Carthage | MO | $96.5M |
| Waste Control Specialists LLC | Dallas | TX | $69.6M |
| C & C Environmental Inc. | Milwaukee | WI | $55.3M |
| Tri-state Government Services Inc. | Chattanooga | TN | $43.3M |
| Energysolutions Services, Inc.Salt Lake City, UT · UEI H7T5QADW76Q1 | Salt Lake City | UT | $39.9M |
| Horizon Environmental Services, Inc. | Cranberry Township | PA | $37.5M |
| Sued-muell GMBH & Co. Kg Fuer Abfalltransporte Und Sonderabfallbeseitigung | Hessheim | | $37M |
| Safety-kleen Systems, Inc. | Norwell | MA | $36M |
| US Ecology Holdings, Inc. | Phoenix | AZ | $35.7M |
| Specpro Professional Services, LLCSan Antonio, TX · UEI VUKRXEYWJ229 | San Antonio | TX | $30.5M |
| Tradebe Environmental Services, LLC | Merrillville | IN | $29.9M |
| Bio Response Solutions Inc. | Danville | IN | $29.2M |
| Ewa Direction Inc. | Honolulu | HI | $24.6M |
| Arcwood Environmental, LLC | Indianapolis | IN | $23.2M |
| Tradebe Treatment And Recycling, LLC | East Chicago | IN | $22.9M |
| Jfe-k Ryukyu Logistic JV | Yokohama | | $19M |
| San-i-pak Pacific, Inc. | Tracy | CA | $17.1M |
| J&T Recycling Corporation | Yokohama | | $16.2M |
| Aleut Environmental Remediation, LLC | Oak Ridge | TN | $13.4M |
| Okinawaken Sangyo Haikibutsushori Cooperative Association | Nakagamigun | | $11.4M |
| Gs Environmental, Inc. | Port Orchard | WA | $10.5M |
| Energysolutions, LLC | Salt Lake City | UT | $10.3M |
| US Ecology Washington Inc. | Richland | WA | $8.52M |
| Aergc JV LLC | Oak Ridge | TN | $8.33M |
| Energysolutions Services, Inc.Oak Ridge, TN · UEI JGNFCLZGV8J7 | Oak Ridge | TN | $7.66M |
| Bridges BTC, Inc. | Rockledge | FL | $6.87M |
| Tad Environment | Riyadh | | $6.28M |
| CLC Services Inc. | Pleasanton | TX | $5.52M |
| Environmental Management Services Inc. | Rockville | MD | $4.78M |
| Energysolutions Services Inc. | Charlotte | NC | $4.47M |
| Specpro Professional Services, LLCAnchorage, AK · UEI U6LFSJ5UL1Y5 | Anchorage | AK | $4.17M |
| Veolia Es (uk) Limited | London | | $3.55M |
| Vesequ LLC | Johns Creek | GA | $2.48M |
| Sebang Oil Corporation | Gimpo-si | | $2.26M |
| Eco Energy Korea Co. Ltd. | Jincheon-gun | | $1.98M |
| Boom Waste Treatment Company | Doha | | $1.69M |
| Rad Solutions LLC | Hilmar | CA | $1.13M |
| Daniels Sharpsmart, Inc. | Chicago | IL | $1.1M |
| Jfe-k Iwakuni Hw JV | Yokohama | | $1.07M |
| Quick Response Fire & Environmental, LLC | Kooskia | ID | $1.02M |
| DLD Environmental Services, Inc. | Plainwell | MI | $960K |
| Medical Waste Transport Inc. | Sioux Falls | SD | $894K |
| B & N Resources, LLC | Laguna Niguel | CA | $818K |
| Clean Management Environmental Group, Inc. | Walterboro | SC | $801K |
| Augustin Consulting Group LLC | San Diego | CA | $752K |
| Cal Inc. | Vacaville | CA | $664K |
| Healthcare Medical Waste Services, LLC | Colorado Springs | CO | $579K |
| Izaydas Izmit Atik Ve Artiklari Aritma Yakma Ve Degerlendirme Anonim Sirketi | Izmit | | $545K |
| Nac Philotechnics, Ltd. | Oak Ridge | TN | $504K |
| S & G Enterprises Inc. | Germantown | WI | $490K |
| Rivers Environmental, LLC. | East Meadow | NY | $482K |
| Environmental Marketing Services, LLC | Seneca | SC | $438K |
| Bak Global LLC | Houston | TX | $429K |
| Farzeen Company For General Trading & Cleaning Services Ltd. | Erbil | | $357K |
| Larson-miller Inc. | Nampa | ID | $349K |
| Hl Consultech JV LLC | Maxton | NC | $304K |
| Alaska Medical Waste, LLC | Anchorage | AK | $268K |
| Fukukou Sangyo Co.ltd. | Date-gun | | $264K |
| Clean Earth Environmental Solutions, Inc. | King Of Prussia | PA | $247K |
| Medical Waste Disposal, LLC | Casa Grande | AZ | $212K |
| Guam Medical Waste Management LLC | Tamuning | GU | $212K |
| Asada Shokai Co. Ltd. | Chiyoda-ku | TOKYO | $206K |
| Secanim Suedwest GMBH | Rivenich | | $204K |
| Transaxle Logistics LLC | Tucker | GA | $202K |
| Clean Harbors Caribe, Inc. | Catano | PR | $198K |
| Environmental Enterprises Inc. | Cincinnati | OH | $195K |
| Suburban Septic Service Inc. | Medina | OH | $192K |
| Bolen Enterprises, LLC | El Dorado Hills | CA | $191K |
| Rent-a-drum (proprietary) Limited | Windhoek | | $179K |
| Entech Alaska, LLC | Anchorage | AK | $168K |
| Eco-program S.R.L. | Thiene | | $123K |
| Nakasho Inc. | Kawasaki | | $121K |
| Desotec US LLC | Darlington | PA | $92.7K |
| Professional Asbestos Removal Corporation | Fresno | CA | $87.7K |
| Medical Environmental Technologies, LLC | El Cajon | CA | $83.6K |
| Sanyu Plant Service Co. Ltd. | Sagamihara | KANAGAWA | $79.9K |
| Hazmat Inc. | Kansas City | MO | $77.6K |
| Chem-nuclear Systems, L.L.C | Barnwell | SC | $73K |
| Chung Hae Environment Inc. | Busan | | $72.3K |
| Black Stone Services LLC | Liberty | NC | $70K |
| Hazmat TSDF, Inc. | Bloomington | CA | $67.5K |
| Eq Northeast, Inc. | Wrentham | MA | $64.8K |
| Sooner Medical Waste Management, LLC | Muldrow | OK | $54.2K |
| Ecolab Quimica Ltda | Suzano | | $51.6K |
| Action Oil Services, Inc. | Rose City | TX | $51.4K |
| National Public Health Institute Of Liberia | Monrovia | LR-MO | $50.2K |
| Gammatron, Inc. | Houston | TX | $43.4K |
| Perma-fix Of Florida Inc. | Gainesville | FL | $39.5K |
| TC'S Mustang Disaster Cleanup, Inc. | Presho | SD | $32K |
| Environmental Management Inc. | Guthrie | OK | $29.5K |
| Qual-x, Inc. | Swannanoa | NC | $28.8K |
| NRC Environmental Services Inc. | Portland | OR | $24.3K |
| Enviro-safe Consulting LLC | Germantown | WI | $21.7K |
| Arcwood Environmental - East Liverpool, Inc. | East Liverpool | OH | $19.6K |
| US Ecology, Inc. | Phoenix | AZ | $19.6K |
| Safeway Used Oil, L.L.C. | St Bernard | LA | $12.1K |
