Not trying to be harsh, but I want to be fair as well.  

For me personally I think those look like some harsh numbers I would have to reconsider.  

I would not use an acid or any other harmful chemicals on it.If it were me I would tape/tarp/seal off the walls and floor and create a tarp-trough there in front of the hearty to contain any runoff water.  

If you have spent 6-months educating yourself, you shouldn't be asking what your first step should be.I'm really not trying to be harsh or discourage you.  

I'm 28yr old, chemical eng with a "stable" job, I had the best blessing in life 10 days ago with my beautiful baby daughter =D which only motivates me harder.

You don't have to be so harsh like he is, but stern is definitely the way to go.Great script btw Brian.

This may sound a little silly, but, meth lab makers or builders, or whatever you want to call them, are also aware effects of the chemicals and usually take steps to create some form of confined space.

I've read about chemical solvents for cleaning and also full-blown sander rental.Who's done this before?

Yes, harsh words, but worth consideration when addressing challenges and new rules of the business.

State law may require you to first obtain a real estate license.Many people ignore this, but should someone file a complaint, the penalties can be harsh.