Water Treatment Plant Job

So I recently put in a bid for a water treatment plant. They have a huge seagull problem so there is bird crap everywhere. I’ve had experience with bird poop and sometimes the stain just won’t budge, it’ll look fine wet but once dry you get that white haze, any recommendations?

What parts are you cleaning? Have pics? What’s the material, concrete?

You need a alkaline based soap.

I basically quoted them only for the concrete not the blacktop, and they would want piping and some metal cleaning in the middle area I circled

That is not the actual plant but the piping is basically the same