Update:hmm. The 100% lead paint wall may…not be? Tested that and spritzed the pink swab with vinegar as a control test and it cleared.

grr face

Then i dug up a lead fishing weight and jeeebus schneebus, that pink positive swab did not change one iota after i blasted it with vinegar

EDIT: just to be clear, it’s still a full PPE sitch, we’re dealing with concrete and mortar dust. But it’s the difference between washing and contamination disposal afterwards