| Chemical Product | Volume Applied | Notes / Dilution |
|---|---|---|
|
Sodium Hypochlorite 12.5% (diluted to 2.5%)
⚠️ See SDS below · OSHA HazCom 2012
|
32.00 gal | Soft wash — brick mortar sensitivity requires <3% SH concentration |
|
Elemonator Non-ionic Surfactant
⚠️ See SDS below · OSHA HazCom 2012
|
3.50 gal | 0.5 oz/gal to improve cling time on porous brick |
| Time | Location | pH Reading | Note |
|---|---|---|---|
| 07:00 | NW corner drain | 8.4 | Baseline — slight alkalinity from historic mortar |
| 09:30 | NW corner drain | 8.0 | Mid-wash |
| 10:45 | NW corner drain | 7.2 | Post-rinse — within FDEP 6.0–9.0 standard |