Part II SPECIFIED PERIODS
| Activity | Minimum period years | Maximum period years |
|---|---|---|
| (1) | (2) | (3) |
| Collection of refuse | 5 | 7 |
| Cleaning of buildings | 4 | 6 |
| Other cleaning | 4 | 6 |
| Catering for purposes of school and welfare | 4 | 6 |
| Other catering | 4 | 6 |
| Maintenance of ground | 4 | 6 |
| Repair and maintenance of vehicles | 4 | 6 |