In an environmental investigation and any subsequent prosecution, you will need advice and support from experts such as biologists, hydrogeologists, and lawyers, but their fees can be very expensive.
However, with some creative networking you may be able to enlist the support of resource people on a volunteer basis, or at reduced rates. Local residents may be able to provide expertise as well as volunteer their help and local environmental groups may have access to experts who will volunteer their services or provide them at a lower rate. Furthermore, lawyers such as those working at the Canadian Environmental Law Association, Environmental Defence Canada, Ecojustice, and the West Coast Environmental Law Association offer their services to environmental groups.
Environmental Bureau of Investigation 