Scope_of_Work_C_Street_Manhole_Repairs.pdf
PDF 127 KB Posted
- Attached to
- C Street Sanitary Sewer Manhole Repair
- Solicitation number
- N4008526R9000
About this file
This Scope of Work details a wastewater manhole repair project on C Street, involving the replacement of an existing sanitary sewer manhole. The project requires the contractor to perform comprehensive infrastructure rehabilitation, including mobilization, traffic control, bypass pumping for two gravity sewer lines (12" and 24") and one forcemain (16"), and complete manhole reconstruction. Specific tasks include removing the existing manhole structure, excavating to the appropriate depth, installing a new concrete manhole base and two risers, connecting wastewater lines, and restoring the surface to its pre-existing condition.
The contractor must provide all necessary materials and equipment, including a concrete manhole base sized for existing pipe specifications, pipe fittings and adapters, bypass pumps (diesel or electric), and HDPE or lay-flat hose with associated valves and fittings. The project emphasizes continuous wastewater flow management through 24/7 bypass system monitoring and coordination with Base Utilities, ensuring that all technical requirements are met with minimal disruption to existing infrastructure.
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Other files
| File | Type | Posted |
|---|---|---|
| Amend 0002.pdf | ||
| Amend 0001.pdf | ||
| RFP 260001.pdf | ||
| C_Street_Manhole_Repair_Map.png | PNG image |
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Text version
Scope of Work
C Street Wastewater Manhole Repair
1. Project Overview - This project involves the repair and partial replacement of an existing sanitary sewer manhole located on C Street. The scope includes installing a prefabricated concrete manhole base and two riser sections, as well as managing bypass pumping for two gravity sewer lines and one force main during construction.
2. General Scope of Work - The Contractor shall provide all labor, equipment, and materials necessary to perform the following:
a. Mobilization and demobilization
b. Traffic control (if applicable)
c. Bypass pumping setup and operation for two gravity wastewater lines and one forcemain
d. Removal and disposal of existing manhole components as needed
e. Installation of a new concrete manhole base and two risers
f. Connection of all influent and effluent wastewater lines
g. Restoration of disturbed areas, including pavement and/or landscaping
3. Bypass Pumping Requirements
The Contractor shall:
a. Provide and install temporary bypass systems for:
(1) Two gravity sewer lines (12” and 24”)
(2) One forcemain (16”)
b. Furnish all pumps, piping, valves, fittings, and supports required for continuous and reliable bypass operation
c. Monitor bypass systems 24/7 or as directed during active work and wastewater flows
d. Coordinate with Base Utilities for proper pump discharge location
e. Ensure all bypass pumping complies Base Utilities
4. Manhole Repair & Installation
The Contractor shall:
a. Remove and dispose of the existing manhole structure (partial or full demolition depending on condition)
b. Excavate to appropriate depth for new manhole base
c. Install concrete manhole base
d. Stack and align two concrete risers to achieve final manhole height
e. Ensure all joints are sealed watertight and structure is plumb
f. Connect all wastewater lines (gravity and forcemain) with proper alignment and seal
g. Backfill, compact, and restore surface to “at least” pre-existing condition
5. Materials & Equipment
The Contractor shall provide:
a. Concrete manhole base (sized appropriately for pipe sizes and flow)
b. All pipe fittings, boots, or adapters needed to tie into existing sewer lines
c. Bypass pumps (diesel or electric as needed), with capacity to manage existing peak flows
d. HDPE or lay-flat hose, valves, and necessary fittings for bypass lines
File details come from the government source that posted it. Updated .