Project Summary
Phase:
- Design (Lateral Renewal)
- Construction (Pipe and Manhole Rehabilitation)
Status: Active
Location: Potomac West
Managing Dept.: Project Implementation
Sponsor Dept.: Transportation & Environmental Services
Project Description
The City of Alexandria has established an ongoing citywide initiative called the Sanitary Sewer Asset Renewal Program to assess, renew, and improve the performance of the existing sanitary sewer system. Regular inspection and upkeep of this infrastructure is vital for the overall health and proper operation of sewer system infrastructure. It also helps reduce sewer system infiltration and inflow, which is when excess groundwater (infiltration) and stormwater (inflow) enter the sanitary sewer system through structural weaknesses, like cracks and joint failures, and faulty manhole frames. Addressing infiltration and inflow helps reduce the frequency and magnitude of sanitary sewer overflows, and back-ups into homes and businesses.
The is project is the first of three phases that will rehabilitate sanitary sewer infrastructure serving portions of Rosemont, Del Ray, North Potomac Yard, Arlandria, and North Ridge. Phase 1 inspections, which focused on sanitary sewer pipes, manholes, and City-owned laterals in the Four Mile Run and Commonwealth Sanitary Sewersheds east of Commonwealth Avenue, were completed in December 2021.
Inspection Summary
- 644 pipes inspected (21 miles of sanitary sewer)
- 580 manholes inspected
- 2,611 laterals inspected
Inspection Results
- 150 pipes require rehabilitation (23 percent)
- 111 manholes require rehabilitation (19 percent)
- 491 laterals require rehabilitation (19 percent)
Funding
Project Budget:
- Pipe and Manhole Rehabilitation: $5,270,000
- Lateral Renewal: $4,080,000
CIP Section: Sanitary Sewer
Learn more about the City of Alexandria's Fiscal Year Budget.
Learn more about the Sanitary Sewer Asset Renewal Program.
Schedule
Pipe and Manhole Rehabilitation
- Planning: April 2021 - August 2021
- Design: August 2021 - June 2023
- Construction: October 2023 - January 2026
Lateral Renewal
- Planning: January 2023 - November 2023
- Design: October 2023 - December 2024
- Construction: December 2024 - May 2027
Design
Design Update
Lateral Renewal
A design task order was issued to an engineering design consultant. City staff is currently working with the Consultant on the design process and the City expects to receive the 90% design submittal by the end of September 2024.
Construction
Construction Overview
Pipe and Manhole Rehabilitation
- Consultants:
- Contractor: AM-Liner East
- Engineer/Construction Management Services: Greeley and Hansen
- Scope of Work:
- Sanitary Sewer Pipes will be repaired using a UV cured-in-place pipe (CIPP) lining process
- Manholes rehabilitation varies by location, but may include:
- Frame and cover replacement
- Cementitious spray-on lining
- Bench and channel repairs
Community Engagement
COMMUNITY MEETING
The City held a public meeting at Alexandria City Hall on Thursday, October 6 from 7-9 p.m. to discuss the scope of work, schedule, and what to expect during construction.
NOTIFICATION LETTERS
The City of Alexandria and the project contractor AM-Liner East will send out two letters on a rolling basis to residents and businesses within 350 feet of construction.
Each letter will be distributed in English and Spanish.
Timing:
- First notification: 14 days prior to construction
- Second notification: 48 hours prior to construction
What to Expect During Construction
CONSTRUCTION HOURS
General Construction Activity:
- Monday-Friday: 7 a.m.-6 p.m.
- Saturday: 9 a.m.-6 p.m.
Restricted Roadways:
Construction activity on select City arteries, including Commonwealth Ave., Mt. Vernon Ave., E. Glebe Rd., and E. Monroe St., is limited to:
- Monday-Friday, 9 a.m.-3:30 p.m.
- Saturday: 9 a.m.-6 p.m.
CONSTRUCTION IMPACTS
Parking
- No Parking signs to be posted 72 hours in advance
- Please remove anything in the roadway during the work window during the time indicated on the No Parking signs
Water Use
- Sewers must be dry for proper UV curing
- Length of suspension varies based on pipe size and length, but typically around six hours
Odors
- Pour small amount of water in any drain taps that might be dry (basement floor drain, for example) to eliminate potential for odors during lining