| Chemical Product | Volume Applied | Notes / Dilution |
|---|---|---|
|
Sodium Hypochlorite 12.5% (diluted to 1.5%)
⚠️ See SDS below · OSHA HazCom 2012
|
52.00 gal | School campus — low concentration required; students on-site after 3pm |
|
Elemonator Non-ionic Surfactant
⚠️ See SDS below · OSHA HazCom 2012
|
5.50 gal | 0.5 oz/gal; low-odor formulation for occupied school environment |
| Time | Location | pH Reading | Note |
|---|---|---|---|
| 06:00 | South campus drain | 8.0 | Baseline — slightly alkaline from painted stucco surface |
| 09:30 | South campus drain | 7.6 | Mid-wash |
| 11:00 | South campus drain | 7.0 | Post-rinse — within NC DEQ 6.0–9.0 standard |