| Chemical Product | Volume Applied | Notes / Dilution |
|---|---|---|
|
Sodium Hypochlorite 12.5% (diluted to 0.5%)
⚠️ See SDS below · OSHA HazCom 2012
|
28.00 gal | Ultra-low SH for powder-coat protection — prevents chalking and oxidation of coating |
|
Bioclean Aluminum-Safe Detergent
⚠️ See SDS below · OSHA HazCom 2012
|
5.00 gal | 0.25 oz/gal; pH-neutral formulation designed for anodized and coated aluminum panels |
| Time | Location | pH Reading | Note |
|---|---|---|---|
| 05:00 | Building perimeter drain | 7.6 | Baseline — neutral, Chicago city water influence |
| 08:30 | Building perimeter drain | 7.3 | Mid-wash |
| 09:45 | Building perimeter drain | 7.1 | Post-rinse — within IL EPA 6.0–9.0 standard |