| Business | Phone |
| Gestion Environnementale Inc 19 Fairmont Ave, Ottawa K1Y 1X4 | (613) 725-1554 |
| Global Change Strategies Intl 150 Isabella St #305, Ottawa K1S 1V7 | (613) 232-7979 |
| Globaltox International Inc 1794 Courtwood Cres, Ottawa K2C 2B5 | (613) 766-1000 |
| Gpec Intl Ltd 2880 Sheffield Rd #3, Ottawa K1B 1A4 | (613) 747-1788 |
| Green & Gold Inc 99 Seneca St, Ottawa K1S 4X8 | (613) 730-0870 |
| Greenough Environmental 1827 Woodward Dr, Ottawa K2C 0P9 | (613) 792-4125 |
| Heritage Research Assoc Inc 962 Blythdale Rd, Ottawa K2A 3N7 | (613) 722-1949 |
| Inair Environmental Ltd 1390 Prince Of Wales Dr #503, Ottawa K2C 3N6 | (613) 224-3863 |
| Indoor Air Technologies Inc 2344 Haddington Cres, Ottawa K1H 8J4 | (613) 731-2559 |
| Innovative Management Solution 350 Sparks St #309, Ottawa K1R 7S8 | (613) 567-1877 |
| Intera Engineering Ltd 265 Carling Ave #208, Ottawa K1S 2E1 | (613) 232-2525 |
| Jkm Assoc 1125 Colonel By Dr, Ottawa K1S 5B6 | (613) 523-1020 |
| Marbek Resource Consultants 222 Somerset St W #300, Ottawa K2P 2G3 | (613) 523-0784 |
| Pinchin Environmental Conslnts 1400 Highgate Rd #203, Ottawa K2C 2Y6 | (613) 829-3391 |
| R V Anderson Assoc Ltd 1750 Courtwood Cres, Ottawa K2C 2B5 | (613) 226-1844 |
| Rfi-Ges Inc 858 Bank St, Ottawa K1S 3W3 | (613) 235-4343 |
| S L Ross Environmental Rsrch 717 Belfast Rd #200, Ottawa K1G 0Z4 | (613) 232-1564 |
| Cadmus Group 411 Roosevelt Ave #204, Ottawa K2A 3X9 | (613) 761-1464 |
| Senes Consultatns Ltd 901 Bank St, Ottawa K1S 3W5 | (613) 820-7500 |
| Statham, Joy 265 Glynn Ave, Ottawa K1K 1S2 | (613) 230-9697 |
| Stratos Inc 1 Nicholas St #1404, Ottawa K1N 7B7 | (613) 241-1001 |
| T G Intl Ltd 33 Georgian Pvt, Ottawa K2C 3P4 | (613) 225-7204 |
| Terrachoice Environmental Svc 2781 Lancaster Rd #400, Ottawa K1B 1A7 | (613) 247-1900 |
| Viridis Environmental Inc 130 Slater St #760, Ottawa K1P 6E2 | (613) 234-1002 |
| Cullbridge Marketing & Comm 61 Forest Hill Ave, Ottawa K2C 1P7 | (613) 224-3800 |
| Energy Pathways Inc 310 Beechgrove Ave, Ottawa K1Z 6R3 | (613) 798-9393 |
| Delphi Group 428 Gilmour St, Ottawa K2P 0R8 | (613) 562-2005 |
| Eamic Engineering Intl 325 Dalhousie St #907, Ottawa K1N 7G2 | (613) 789-6780 |
| Esg Intl 1725 St Laurent Blvd, Ottawa K1G 3V4 | (613) 248-1196 |
| Essentia Communications Inc 100 Bronson Ave #1001, Ottawa K1R 6G8 | (613) 238-4437 |
| G A Packman & Assoc 1827 Woodward Dr, Ottawa K2C 0P9 | (613) 224-2775 |