I have some economics questions that I wish someone can help me to solve. Thank you.?

3) Knowing what kind of hazardous waste products you're going to be using in the clean up process can certainly help estimate what kind of costs a project may have. Start asking yourself what kinds of products will I be using for this project? Then add all the other factors that come along with the task and eventually you'll get some good estimates. I'll post a few links for you on an environmental company I'm familiar with. Hope this helps you!