Hi Laredo! First off, "WELDCOME TO THE WORLDS GREATEST WELDING FORUM!!!" Now that I've got that out of the way, here's my take on your situation...
Well, if you are a CWI, then all you have to do is to refer to the appropriate code book, read the acceptance criteria in the contract documents brush up on you certification manual and visual inspection manual and then you should be good to go! Now there's a friend of mine named JRW159 who has done some work on similar projects, and I believe he might be more helpful with more of the specifics than myself, so send him a Private Message and fire away because I'm sure he would be interested in the project as well. ;)
What I suggested is just somewhere to start, and my guess is that JRW159 and some of the other folks who also have some experience with similar work will chime in and ask some more detailed questions on the specific nature of those light poles... Sorry I couldn't be more helpful, and watch that Galvanized stuff because those fumes will kill you if you're not thinking SAFETY!!!
Respectfully,
Henry