| Region | Facade | pH |
| A | South-Laundry | 9.22 |
| B | North-Laundry | 9.10 |
| C | North-Warehouse | 8.88 |
| D | East-Warehouse | 9.56 |
| E | West-Warehouse | 9.28 |
| F | South-Warehouse | 10.80 |