The fact no one will seriously be able to challenge the site selection on environmental grounds will simply speed getting the shovels into the ground.
You should look into the rehabilitation of contaminated sites before stating anything quite so strongly. The undesirability of contaminated land can make it environmentally valuable and worth protecting. Environmental grounds for legal argument aren't nearly as limited as you're pretending.
History, as we all should know by now, is little more than a narrative. It seeks to simplify reality and explain where we are in the context of where we've been. Note that history is distinct from record keeping. As a result of this simplification, history is inherently bias even when attempts are made to avoid this bias. You should read some essays by Romila Thapar for a fairly quick explanation of how this plays out and maybe avoid asserting your seemingly incomplete understanding so proudly in the mean time. Your criticisms aren't entirely unfounded, but you're stepping on your own foot here.
The result? A huge community of loyal customers who benefit from our business model. Not because our prices are necessarily great compared to what you can find online, but because you can get rid of a wide variety of media you aren't using and apply that towards things you want, finding things that aren't available anywhere else. We're also the only source in the region for collectible old school consoles and their games. It sucks to give someone $80 for a 360, but the ones that get $30 for a working NES, or $50 for a Master System with all the trimmings are happy. I would much rather be keeping these things circulating than have them end up in a dumpster. Our product diversity separates us from gamestop, but I don't see their general model as being necessarily evil.