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Project Repair Sewer Manholes I&I Project
| 1 |
| Project scope states to raise the frames of manholes 6” above ground. Please identify which manholes this applies to. |
| General term in the scope. Upon the site check of the manholes, this scope does not apply to the current list of manholes. |
| 2 |
| SN #2 states demo building ties into abandoned line. Please clarify scope. Does this mean remove/excavate existing pipes to building? Or just cap/plug at manhole? |
| The Scope for the remained pipe at the Demoed Building at (South of Gavin Mandry/4th |
Street). is to drill the existing concrete in the pipe carefully (do not break the pipe) refill by concrete to stop infiltration.
| 3 |
| SN calls out drill & grout. Please clarify what drill & grout scope entails. |
| 4 |
| Are any of the manholes in environmentally sensitive areas? If so, is there an 813 for those particular sites? Example MH87 |
| AF-813 is in process. Environmental protection requirements will be provided for the manholes. |
| 5 |
| Are there any concerns or restrictions to access manholes located within environmentally sensitive areas? |
| Based on the site check, one or two manholes will need access that requires environmental assessment, which will be provided upon approval of the af-813. |
| Please confirm if manhole 402 is part of scope. |
| Manhole 402 is not part of the scope |
| 6 |
| Please confirm if manhole 405 is part of scope. |
| Manhole 405 is part of the scope (SON adjusted). |
| 7 |
| Do we plug the east side of MH439? |
| Manhole 439, 335, and similar which are abandoned and isolated from the current service line, must be filled with PCC (Plain Cement Concrete) 12” over the pipe level to stop infiltration to the system from all sides. |
| 8 |
| Do you want to replace the ring or riser on MH505? |
| Inflow from the joints of the top ring was identified at MH505. |
Seal the existing leaking joint if possible or replace the ring if needed.
| 9 |
| SON, B., states: "The Contractor shall furnish all design, labor, supervision…" Is design part of the requirement? |
| Desing is not required. A work plan will be needed to document the pre-repair scopes and will be updated as an as built when the repair is completed for reporting and record purposes. |
| 10 |
| Can contractor park work vehicle on shoulder of road directly next to manhole site(s)? |
| Locations for equipment close to the manholes will be identified through the af-813 approval. |
