| Landmark Environmental LLC | Minneapolis | MN | $3,750 |
| MKM Environmental Consulting LLC | Rochelle Park | NJ | $3,650 |
| Stronghold Environmental, LLC | El Reno | OK | $3,268 |
| Pearson Environmental Services LLC | Byram | MS | $3,000 |
| Stantec - Michael Baker - Sundance JV | Charlottesville | VA | $3,000 |
| Tehama - Versar Joint Venture | Kansas City | MO | $3,000 |
| Building Transparency | Bellevue | WA | $2,985 |
| H2 Environmental Consulting Services, Inc. | Chino | CA | $2,900 |
| Archaeological Services Of Clark County LLC | Vancouver | WA | $2,728 |
| Alta Environmental, L.P. | Long Beach | CA | $2,659 |
| Management & Environmental Consulting Services, Inc. | Chesterfield | NJ | $2,545 |
| Alliant-ati JV, LLC | Knoxville | TN | $2,500 |
| Aor-consor, LLC | Melbourne | FL | $2,500 |
| B&b-ecm JV | Overland Parks | KS | $2,500 |
| Jaime Hart | Allston | MA | $2,500 |
| Institute For Environmental Assessment, Inc. | Minneapolis | MN | $2,300 |
| R.i. Analytical Laboratories, Inc. | Warwick | RI | $2,144 |
| Gebco Associates, LP | Hurst | TX | $1,720 |
| Onterris Response And Recovery, LLC | North Little Rock | AR | $1,127 |
| Tetra Tech, Inc. | Mobile | AL | $1,000 |
| Gryphon Scout Joint Venture LLC | Colorado Springs | CO | $500 |
| GWC HRP JV LLC | Sterling | VA | $500 |
| Conservation Works, LLC | Pennsylvania Furnace | PA | $225 |
| 21environmental, Inc. | Framingham | MA | $0 |
| 3-P Consulting Inc. | Lahaina | HI | Subcontractor |
| 5H Technologies, Inc. | Paducah | KY | $0 |
| Acc Environmental Consultants, Inc. | Oakland | CA | Subcontractor |
| Accredited Environmental Technologies, Inc. | Media | PA | $0 |
| Acer Associates LLC | West Berlin | NJ | Subcontractor |
| Achete & Primo Consultoria, Pericia E Desenvolvimento De Software Ltda | Rio De Janeiro | | $0 |
| Acme Environmental Inc. | Albuquerque | NM | Subcontractor |
| Acme Environmental Industrial Hygiene Inc. | Albuquerque | NM | Subcontractor |
| Acro Technologies Inc. | Austin | TX | $0 |
| Acrt, Inc. | Stow | OH | Subcontractor |
| Act Environmental Inc. | Tucson | AZ | Subcontractor |
| Act Environmental Services, Inc. | Indianapolis | IN | Subcontractor |
| Adam Labs Inc. | Marysville | CA | Subcontractor |
| Adams And Wendt, Inc. | Mesa | AZ | $0 |
| Adams Environmental Inc. | San Antonio | TX | $0 |
| Adaptive Restoration LLC | Mount Horeb | WI | $0 |
| Adelaide Environmental Health Associates, Inc. | Brewster | NY | $0 |
| Adelante Consulting, Inc. | Corrales | NM | Subcontractor |
| Adirondack Operations LLC | Croghan | NY | $0 |
| A.d. Marble & Co. Inc. | King Of Prussia | PA | Subcontractor |
| Advanced Air Analysis, Inc. | Pikesville | MD | Subcontractor |
| Advanced Composting Technologies LLC | Candler | NC | $0 |
| Advanced Waste Management Systems, Inc. | Hixson | TN | Subcontractor |
| Aegis Environmental, Inc. | Greenwood | IN | $0 |
| Aero E H & S Inc. | Ellicott City | MD | Subcontractor |
| Aerolite Consulting LLC | Springville | UT | $0 |
| Agri-waste Technology, Inc. | Cary | NC | $0 |
| A&htec Albrecht & Hoermann Umwelttechnik GMBH | Seehausen | | $0 |
| Air Right Inc. | Lakewood | CO | Subcontractor |
| Airtek Environmental, LLC | Long Island City | NY | Subcontractor |
| Air Tox Environmental Company Inc. | Willington | CT | Subcontractor |
| Ak Pioneer Consulting LLC | Parker | CO | $0 |
| Akrf Inc. | New York | NY | Subcontractor |
| Akt Peerless Environmental Services, L.L.C | Saginaw | MI | $0 |
| Alaska Resources And Environmental Services LLC | Fairbanks | AK | Subcontractor |
| Albion Environmental, Inc. | Santa Cruz | CA | Subcontractor |
| Alexandra Davies | Fairfax | VA | $0 |
| Allegheny Global Environmental, Inc. | Carnegie | PA | $0 |
| Allen Engineering & Science Inc. | Jackson | MS | $0 |
| All Environmental, Inc. | Walnut Creek | CA | $0 |
| Alliant Environmental LLC | Rockport | TX | $0 |
| All Points Environmental, LLC | Beaumont | TX | Subcontractor |
| Alpha Envirotech Consulting, Inc. | Jacksonville | FL | Subcontractor |
| Alpha Geological Services Inc. | Clifton Park | NY | Subcontractor |
| Alternative Construction & Environmental Solutions, Inc. | Augusta | GA | $0 |
| Amber Travsky | Laramie | WY | $0 |
| Ambient Environmental, Inc. | Albany | NY | $0 |
| American Containment Services, Inc. | Marietta | GA | $0 |
| American Management Resources Corporation | Fort Myers | FL | $0 |
| Ami Group, Inc. | Omaha | NE | Subcontractor |
| Amy T Wolf | Green Bay | WI | $0 |
| Analytical Quality Associates Inc. | Albuquerque | NM | Subcontractor |
| Animas Environmental Services, LLC | Farmington | NM | $0 |
| Apogee Environmental & Archaeological, Inc. | Whitesburg | KY | Subcontractor |
| Applied Archaeological Research, Inc. | Portland | OR | Subcontractor |
| Applied Geology And Environmental Science, Inc. | Clinton | PA | $0 |
| Applied Hydrogeologic Solutions LLC | Gainesville | FL | $0 |
| Aptim Environmental & Infrastructure, LLC | Baton Rouge | LA | Subcontractor |
| Aqs, Inc. | Ogden | UT | Subcontractor |
| Aqua Sierra Inc. | Morrison | CO | $0 |
| Aquatic Resources Center, Inc. | Nashville | TN | $0 |
| Arc Environmental Services, Inc. | Tamuning | GU | Subcontractor |
| Arctic Data Services, LLC | Fairbanks | AK | Subcontractor |
| Area West Environmental, Inc. | Orangevale | CA | Subcontractor |
| Aria Environmental, Inc. | Sykesville | MD | Subcontractor |
| Arrowood Environment Group, Inc. | Savannah | GA | $0 |
| "arrowwood Environmental, LLC" | Huntington | VT | $0 |
| Asa Analysis & Communication, Inc. | Warwick | NY | $0 |
| Asbestos Abatement Associates Inc. | Spartanburg | SC | $0 |
| Asbestos Inspections LLC | Conway | SC | Subcontractor |
| Aspen Ridge Technical Services, Inc. | Butte | MT | $0 |
| Assisted Management Solutions, Inc. | Leonardtown | MD | Subcontractor |
| Associacao De Levantamento Florestal Do Amazonas | Manaus | | $0 |
| Association For Environmental Health & Sciences Foundation, Inc. | Amherst | MA | Subcontractor |
| A-tech Consulting, Inc. | Orange | CA | Subcontractor |
| Atelier Ten USA LLC | New York | NY | Subcontractor |
