| Business | Phone |
| Anteon Corp 1100 New Jersey Ave Se # 200, Washington 20003 | (202) 756-4700 |
| American Standards Testing Bur 529 14th St Nw # 2400, Washington 20045 | (202) 628-6400 |
| Ari Fleischer Communications 1133 Connecticut Ave Nw, Washington 20036 | (202) 464-8810 |
| Brazille & Assoc 1001 G St Nw # 500e, Washington 20001 | (202) 628-8081 |
| Bruce Morgan Assoc Inc 4201 Cathedral Ave Nw # 823w, Washington 20016 | (202) 362-8816 |
| C C Johnson & Malhotra 5101 Wisconsin Ave Nw # 210, Washington 20016 | (202) 363-0350 |
| Capitol Engineering Group 1522 K St Nw, Washington 20005 | (202) 216-0039 |
| Carl D Jones & Assoc 3215 Martin L King Jr Ave Se, Washington 20032 | (301) 877-9270 |
| Carr Astronautics Corp 1216 16th St Nw, Washington 20036 | (202) 518-2644 |
| Carter & Burgess Inc 1250 24th St Nw # 300, Washington 20037 | (202) 776-7718 |
| Cautley Engineering 3921 Langley Ct Nw # C, Washington 20016 | (202) 244-2488 |
| Ch2m Hill 555 11th St Nw # 525, Washington 20004 | (202) 393-2426 |
| Chesapeake Enterprise 1215 19th St Nw # 3, Washington 20036 | (202) 463-9677 |
| Citizens For Harkins 426 C St Ne, Washington 20002 | (202) 546-9292 |
| Cohen Dippell & Everist 1300 L St Nw # 1100, Washington 20005 | (202) 898-0111 |
| Covision Inc 1612 U St Nw # 408, Washington 20009 | (202) 299-0157 |
| Cssi 400 Virginia Ave Sw # 210, Washington 20024 | (202) 863-2175 |
| David Volkert & Assoc Engnrng 5028 Wisconsin Ave Nw # 403, Washington 20016 | (202) 237-6269 |
| Delon Hampton & Assoc 800 K St Nw # 720, Washington 20001 | (202) 898-1999 |
| Development Economics Group 2300 N St Nw, Washington 20037 | (202) 331-7775 |
| Diversified Engineering 7600 Georgia Ave Nw # 323, Washington 20012 | (202) 726-7676 |
| Dkw Communications Inc 1030 15th St Nw, Washington 20005 | (202) 289-4003 |
| Drm Intl 4400 Macarthur Blvd Nw, Washington 20007 | (202) 944-3390 |
| Emsi Engineering 1633 Franklin St Ne, Washington 20018 | (202) 526-4311 |
| Energetics Inc 501 School St Sw, Washington 20024 | (202) 479-2748 |
| Energetics Inc 901 D St Sw # 100, Washington 20024 | (202) 479-1152 |
| Engineering Design Group 1825 K St Nw # 1020, Washington 20006 | (202) 862-9600 |
| Lundquist Group Llc 101 Constitution Ave Nw, Washington 20001 | (202) 589-0015 |
| Eyp Mission Critical 2300 M St Nw # 600, Washington 20037 | (202) 467-9170 |
| Flack & Kurtz 2055 L St Nw, Washington 20036 | (202) 293-5951 |
| George Ira Worsley & Assoc 7705 Georgia Ave Nw, Washington 20012 | (202) 291-1666 |
| Global Maritime Consulting 1717 K St Nw # 600, Washington 20036 | (202) 466-0970 |
| Golden Engineering Inc 4455 Connecticut Ave Nw # A600, Washington 20008 | (202) 364-4440 |
| Grotheer & Co 1612 K St Nw # Ll3, Washington 20006 | (202) 223-5752 |
| Hawkins Management & Engrg 1269 Simms Pl Ne, Washington 20002 | (202) 398-1500 |
| Henry Adams Inc 1350 Connecticut Ave Nw, Washington 20036 | (202) 955-1001 |
| Icf Consulting 1725 I St Nw, Washington 20006 | (202) 293-4147 |
| Icf Inc 1725 I St Nw # 1000, Washington 20006 | (202) 862-1100 |
| International Technology Group 1899 L St Nw, Washington 20036 | (202) 331-1789 |
| J R James Co 4911 42nd St Nw, Washington 20016 | (202) 363-0843 |
| Jackson & Tull 2705 Bladensburg Rd Ne, Washington 20018 | (202) 333-9100 |
| Jason Consultants Intl Inc 2000 Massachusetts Ave Nw # 3, Washington 20036 | (202) 223-9610 |
| Joseph R Loring & Assoc Inc 1130 Connecticut Ave Nw # 750, Washington 20036 | (202) 296-6583 |
| Jvp Engineers 4200 Wisconsin Ave Nw # Ll15, Washington 20016 | (202) 362-3001 |
| Kennedy-Jenks Consultants 1015 18th St Nw # 600, Washington 20036 | (202) 429-4377 |
| William C Labaugh 1709 New York Ave Nw, Washington 20006 | (202) 783-8778 |
| Lahmeyer International 1015 18th St Nw # 200, Washington 20036 | (202) 833-8187 |
| Legion Design-Campbell & Assoc 1025 Connecticut Ave Nw # 415, Washington 20036 | (202) 833-4444 |
| Manoff Group Inc 2001 S St Nw # 400, Washington 20009 | (202) 265-7469 |
| Metropolitan Engineering Inc 1150 17th St Nw # 301, Washington 20036 | (202) 898-1960 |
| Nersesian Consulting Engineers 4000 Albemarle St Nw # 401, Washington 20016 | (202) 364-1594 |
| Nexant 1030 15th St Nw # 750, Washington 20005 | (202) 326-0700 |
| Npj Research 1200 G St Nw # 800, Washington 20005 | (202) 434-8745 |
| Parsons Brinckerhoff Quade 1401 K St Nw # 701, Washington 20005 | (202) 783-0241 |
| Parsons Transportation Group 1133 15th St Nw # 9, Washington 20005 | (202) 775-3300 |
| Parsons Transportation Group 955 Lenfant Plz Sw, Washington 20024 | (202) 554-7331 |
| Perficient Inc 1825 I St Nw, Washington 20006 | (202) 429-2023 |
| Phs Engineering Corp 915 5th St Nw, Washington 20001 | (202) 589-1555 |
| Planning Consultants Inc 1220 12th St Se # 300, Washington 20003 | (202) 543-4414 |
| Progressive Strategies Llc 888 16th St Nw # 303, Washington 20006 | (202) 628-7771 |
| Questus Group 1025 Connecticut Ave Nw, Washington 20036 | (202) 857-9754 |
| R M Jones & Assoc 6406 Georgia Ave Nw # 1, Washington 20012 | (202) 723-2110 |
| R V Davis & Assoc 1534 34th St Nw, Washington 20007 | (202) 554-3626 |
| Restl Designers Inc 3223 Grace St Nw, Washington 20007 | (202) 457-1100 |
| Rkf Engineering 1229 19th St Nw, Washington 20036 | (202) 463-1567 |
| Schaffer & Assoc 1140 Connecticut Ave Nw, Washington 20036 | (202) 464-6247 |
| Scientech Inc 2131 K St Nw, Washington 20037 | (202) 488-1607 |
| Shapiro-O'Brien & Assoc 1150 17th St Nw # 301, Washington 20036 | (202) 296-2580 |
| Snc Lavalin Intl Inc 1666 K St Nw # 7, Washington 20006 | (202) 293-7601 |
| Stone & Webster Inc 1717 Pennsylvania Ave Nw, Washington 20006 | (202) 261-1900 |
| Technology Service Corp 80 M St Se, Washington 20003 | (202) 554-4172 |
| Tele Communication Systems Inc 1100 17th St Nw # 501, Washington 20036 | (202) 223-4449 |
| Titan Corp 400 Virginia Ave Sw # C150, Washington 20024 | (202) 488-9740 |
| Water Systems Intl 1828 L St Nw, Washington 20036 | (202) 887-8112 |
| Urs Corp 2020 K St Nw # 300, Washington 20006 | (202) 872-0277 |
| Vader Ventures 2 Massachusetts Ave Nw, Washington 20001 | (202) 789-7221 |
| Veracity Engineering 400 Virginia Ave Sw, Washington 20024 | (202) 488-0975 |
| Von Otto & Bilecky 4000 Albemarle St Nw # 305, Washington 20016 | (202) 237-2750 |
| W S Fleming & Assoc 537 5th St Se, Washington 20003 | (202) 543-7212 |
| Ace Consultants Inc 5301 Wisconsin Ave Nw # 525, Washington 20015 | (202) 364-1565 |
| Alphatec 1525 18th St Nw, Washington 20036 | (202) 797-5000 |
| Nersesian Consulting Engineers 5125 Macarthur Blvd Nw # 32, Washington 20016 | (202) 364-1594 |
| United Design Engineers 1801 K St Nw # 365l, Washington 20006 | (202) 872-4320 |