Trenchless Pipeline Rehabilitation and Design
When there are space constraints, environmental restrictions, or the inability to install pipelines using conventional trenching methods, such as installing a new pipeline across a freeway or under a waterway, trenchless technology becomes the only solution. Our engineers have planned and designed pipeline projects utilizing trenchless technology for more than 25 years and we have been ranked a Top 50 Trenchless Design Firm in the United States since 2013.
Trenchless Options
We carefully consider subsurface conditions and space constraints to determine the most effective trenchless pipeline:
- Jack and Bore: Most common and least expensive; limited to relatively short lengths where groundwater is not a factor
- Horizontal Directional Drilling: Capable of very long drill lengths and depths; can steer horizontally and vertically
- Microtunneling: Capable of long drill lengths with high accuracy below water table
- Cured-in-Place Pipe: Inverted/expanded fiberglass reinforced pipeline installed within existing host pipe, typically used to extend life of sewer/stormwater pipelines
- Sliplining: Using existing host pipeline, can be cost effective when capacity reduction is not a concern and alignment does not contain sharp directional changes
Clients Served
- Cities, including Anaheim, Carlsbad, Corona, Coachella, Encinitas, Escondido, Laguna Beach, Newport Beach, Oceanside, South Pasadena, Placentia, Poway, San Clemente, Solana Beach, and Vista
- Water districts, including Coachella Valley, Irvine Ranch, Las Virgenes, Moulton Niguel, Olivenhain Municipal, San Dieguito, Rainbow Municipal, South Coast, Western Municipal, and Yucaipa Valley
- Other entities, including Chino Basin Desalter Authority, Fallbrook Public Utility District, Leucadia Wastewater District, Orange County Sanitation District, San Diego County, San Elijo Joint Powers Association, Southern California Edison – Mountainview Power, University of California San Diego, Valley Sanitary District, and Victor Valley Water Reclamation Authority
Project Highlights
- 30-Inch Effluent Transmission Main Microtunnel, Moulton Niguel Water District
- Pipeline Rehabilitation Program, City of South Pasadena
- Coast Highway Pump Station and Forcemain – Horizontal Directional Drilling, City of Encinitas
- 84-Inch Plant 2 Primary Influent Rehabilitation Cured-in-Place Pipe, Orange County Sanitation District
What We Do
Our multidisciplinary in-house specialties allow us to provide efficiencies that maintain project momentum.
- Alternative Analysis
- Auger Boring
- Bypass Pumping Design
- CCTV Investigations and Needs Assessment
- Condition Assessment
- Cured-in-Place Pipeline
- Horizontal Directional Drilling
- Inadvertent Return (Frac-out) Planning
- Inverted (sewer) Siphon Design
- Microtunneling
- Pilot Tube Boring
- Pipe Jacking
- Shoring Design
- Site Constraints Analysis
- Sliplining
- Subsurface Conditions/Boring Analysis
Project Support
- CEQA
- District Management
- Environmental Permitting
- Grant Writing and Administration
- Stakeholder Outreach
- Condition Assessment
- Cost Estimating
Curious how our passionate experts can help you Du More? Get in touch!