OK, it's apparent that you have not dealt with Federal agencies permitting process. I have dealt with an alphabet soup of federal and state agencies and their requirements can be rigorous and expensive. For a permit in a waterway, it can cost thousands of dollars for studies by biologists, hydrologist, archeologists and just about any other ...ologist you can think of. It can also take a year as agencies like to daisy chain their requirements, that is when one is done, they decide they need another based on the previous one. Failure to comply will result in serious fines and threats of jail time.
On one project I had to agree to have a crew pull "invasive" weeds from a waterway located 50 miles away from my project for 3 years because I disturbed about 100 SF of "riparian habitat" that was created by an upstream property owners storm drain outflow that had constant nuisance water discharge. Weeds grew in the discharge. It's not pleasant but it's part of doing the job.
And yes, I think I have heard of the term "as-built" during my 40+ years of construction experience with 34+ years as a licensed General Contractor and Construction Manager and having successfully managed more than 1/2 Billion dollars of public works projects.