What are some environmental impacts of the olympic. what has been done to protect the enviroment against the?

The Vancouver Olympics are emitting quite a lot of CO2 into the air via generators and such that are used on site and vehicles and such. However I live in Vancouver and, despite all of the CO2 being released, it is actually one of the greenest Olympics ever. With the newly built Canada Line which is a rapid transit LRT line people can get from the airport right to downtown Vancouver and a couple other lines can take you to about 4 different cities after that. The line does not emit any types of greenhouse gasses. BC also has 80% of it's total energy hydro-electrically meaning by dams and such. The second link and first image pictures a newly built structure known as the Vancouver Convention Centre. The second picture and third link shows the Vancouver Olympic Village. As you can see both of the construction areas use green roofs extensively. The fourth link allows visitors to view the energy consumption per day of the various venues of the 2010 Olympic games. If you click on the 'view chart' link underneath each venue you can see how much of an impact that particular venue has on energy consumption and compare it to what it would be if sustainable practices weren't used.