Rehabilitation of 12,850 LF of CIPP liner ranging from 8-in. to 36-in. diameter, including cleaning and CCTV. Approximately 10,070 LF was 8-in to 18-in. diameter. Liner installation in dense residential neighborhoods, downtown business areas, and in city parks and open spaces.
Included 770 GAL Chemical grouting; cleaning, reinstating, trimming, or structural connections to 670 service laterals; Bypass pumping greater than 1.5, less than 10 MGD; installation of 6 new manhole structures; Reset and or seal 51 frame/cover assemblies; 450 VF of manhole cementitious coating, maintenance of traffic (MOT); contractor-led public outreach/notifications for lining installation.
- Maintain bypass pumping without impeding access to local park / open space (historic C&O Canal Towpath)
- Reduce construction impact on high-profile commercial district on major urban arterial
- Worked with bypass subcontractor Sunbelt to use bypass flow-through ramp
- Coordinated with DC Water for large liner installation during night hours outside of residential area where effective bypass pumping and virtually no lateral reinstatements allowed for efficient operations, zero odor/backup complaints, and minimal impact to traveling public
- Worked with DC Water and subcontractor DACO Corporation to perform critical construction activities during off-hours and night shifts when both vehicular and pedestrian traffic were at lowest daily levels