Ameron T-Lock - J.R. Pipeline Projects
JOA - Joint Outfall A Units 2, 3A & 3B Trunk Sewer Rehabilitation
Sanitation Districts of Los Angeles County
- Rehabilitation of the existing 6,490 lf of 9’-6” and 730 lf of 10’-6” Joint Outfall A Sewer tunnel with a cast in place PVC membrane system.
LNOS - Lower North Outfall Sewer Rehabilitation Project
Lower North Outfall Sewer Downstream Centinela Siphon
City of Los Angeles
- Rehabilitation of the existing 30,517 lf of 10’-6” LNOS tunnel with a cast in place PVC system.
QUICK FACTS
Size, Length, Maintenance Holes
- 10’6” high, 12’3” wide, semi-elliptical
- 30,000 feet (5.5 miles)
Construction Features
- Contractor: Colich & Sons/J.R. Pipeline Joint Venture
The Department of Public Works is in the process of repairing a 5½-mile segment of the Lower North Outfall Sewer (LNOS Phase I) between the Hyperion Treatment Plant in Playa del Rey and the intersection of Centinela Avenue and Sepulveda Boulevard. The old sewer is about 80 years old and closed circuit television inspections have revealed extensive deterioration, which has restricted flows and reduced the capacity of the pipe.
NOS - North Outfall Sewer Rehabilitation Project, Phase 2
North Outfall Sewer Rehabilitation Siphon Structure to La Cienega Interceptor Sewer Junction Structure
City of Los Angeles
- Rehabilitation of the existing 16,874 LF of 10’-6” & 7’-9” NOS tunnel with a cast in place PVC.
QUICK FACTS
- 10’6” high, 7’9” wide, semi-elliptical sewer
- 18,400 feet (3.5 miles) long
- 13 maintenance holes are being rehabilitated
- Inspection provided by City of Los Angeles, Bureau of Contract Administration
COS - Central Outfall Sewer Rehabilitation Project
Central Outfall Sewer Rehabilitation North Outfall Replacement Sewer Diversion #4 to Market Street
City of Los Angeles
- Rehabilitation of the existing 13,779 lf (2.7 miles) of 5’-0” x 6’-1” COS tunnel with a cast in place PVC system.
Background:
The City is now repairing a major, 100-year old sewer that is located in Los Angeles and Inglewood. The 60 by 73-inch, brick-lined sewer, built in 1904, is deteriorating and needs to be rehabilitated to make it reliable so it maintains structural integrity, has adequate capacity, and does not release spills or odors.