| Chemical Product | Volume Applied | Notes / Dilution |
|---|---|---|
|
Sodium Hypochlorite 12.5% (diluted to 2%)
⚠️ See SDS below · OSHA HazCom 2012
|
55.00 gal | Low-pressure soft wash — EIFS requires <500 PSI to avoid coating breach |
|
Simple Cherry Non-ionic Surfactant
⚠️ See SDS below · OSHA HazCom 2012
|
6.00 gal | 0.75 oz/gal; cherry-scented, hospital-adjacent — minimizes odor complaints |
|
Neutra-Wash pH Neutralizer
⚠️ See SDS below · OSHA HazCom 2012
|
8.00 gal | Post-rinse pH correction — lowered runoff from 9.1 to 7.4 |
| Time | Location | pH Reading | Note |
|---|---|---|---|
| 06:30 | Storm drain #3 (west lot) | 9.1 | Pre-wash baseline — SH residue from adjacent area |
| 09:15 | Storm drain #3 (west lot) | 8.6 | Mid-wash reading |
| 11:00 | Storm drain #3 (west lot) | 7.4 | Post neutralizer — within TCEQ 6.5–9.0 standard |