| Includes | maintenance, repair, rehabilitation, replacement, restoration, preservation, etc. of utilities. |
| Level 4 Numbering Recommendation | level 4 titles for utilities are provided as examples for user's creation of more detailed titles for other subjects as required. Following level 4 numbering is recommended: .51-.59 for maintenance. .61-.69 for repair. .71-.79 for rehabilitation. .81-.89 for replacement. .91-.99 for restoration. |
| See | 09 97 00 for surface preparation and painting of existing water storage tanks |