Regulation 4 Calculation of inspection units
The number of units of inspection is calculated by reference to the duration of excavation works only, and on the following basis:
Unit of inspection
| Duration of works | Unit(s) |
|---|---|
| Duration of 15 working days or less | 1 |
| Duration of 16 to 30 working days | 2 |
| Duration greater than 30 working days | 3 |