Neutralizing Paint Stripper, What does it? Options

[Lawrence]

I talked to my apartment manager, and he's letting me out of my lease early, with no penalties. I at least expected to lose the security deposit. He was very cool.

However, he did mention that I needed to clean up the paint overspray on the concrete floor of my balcony. (My place is on the third floor). I painted some stuff out there for the Mid US Ramble Awards. A mix of red, gold and bronze paint overspray.

Normally, I'd just wash the paint stripper off into the drain/grass/whatever with enough water to dilute it to the point of being harmless. However, I don't think that he'd appreciate the stripper flowing down the painted walls of this building.

So, what can I use to neutralize the stripper after I use it to clean up the paint? I don't want to screw this guy - he's been really cool since I've lived here.

-Rusty