In general, you have to measure carbon release/sequestration of every process/material related to the project. Basically LCA- Life cycle assessment
One example for measurement of the windpowerplant preparation work footprint, where I have calculated carbon release for every process during windpowerplant built (wood felling, wood transportation, building of roads, etc).
Conference Paper Carbon balance for forest based wind powerplant: WP Fužine, Croatia
Thanks for answer. I am interested to calculate carbon footprints for tourism and ecological imbalance. If you have any study then It will help me understand and apply.