NCPI in the News & Recent Project Profiles


Pipeline Replacement at Depth
Western Regional Trenchless Review, 2022
Bt: David Gill, Logan Clay Products LLC
The City of Santa Rosa, CA needed to replace an 1,800 foot section of their North Trunk Sewer Main in a heavily traveled area of the city near the courts, administrative offices, and the environmentally sensitive Paulin Creek Reserve. Emergency access to the area needed to be maintained at all times. A dramatic topography meant that some of the homes were 40 feet below the road surface.

Maintaining A Slope Of Just 0.20 Percent
MIDWEST JOURNAL OF TRENCHLESS TECHNOLOGY, November, 2022
By: Steve Matheny, P.E.
As problems arise in older sewer systems, the challenges are becoming more and more common. A developed area with existing utilities, a need to maintain access to residences and businesses, mature trees and landscaping, and a need to replace and enlarge an existing collection line – these are some of the issues we are seeing more frequently.

Precision Line and Grade Overflow Project – On-Time & Under-Budget!
MIDWEST JOURNAL OF TRENCHLESS TECHNOLOGY, November, 2022
By: Ryan Haubenschild, Bore Master Inc.
The City of Milwaukee had a problematic sewer shed. The residents in the area were experiencing frequent basement backups during large rainfall events. The City hired Clark Dietz, Inc. to study the system and identify possible solutions.

Clay Pipe Has a New Standard
CLEANER, August, 2022
By: Jeff Boschert, P.E.
The ASTM International published a new standard practice for cleaning vitrified clay pipelines.
Until now, there was not a governing standard applicable to a collections system after it was placed in service.

Know Thy Pipe
MUNICIPAL SEWER & WATER APRIL, 2022
By: Giles Lambertson
Did you know that high-pressure jetting of sewer pipes can damage some materials?
“All sewer pipe can be damaged,” says Kent Carlson, vice president of the National Clay Pipe Institute.

Lessons Learned on Challenging PTM Project
MIDWEST JOURNAL OF TRENCHLESS TECHNOLOGY DECEMBER, 2021
By: Steve Matheny, PE and Greg Marker, PE
Novi, MI is a growing area 25 miles northwest of Detroit. On this PTM project, they ran in to cobbles, flowing sands and dewatering constraints from Environment, Great Lakes & Energy.

Trenchless Installation as the Economical Choice: Mission Bay & Pacific Beach CA
Western Regional Trenchless Review December, 2021
By: Jeff Boschert P.E.
The communities of Mission Bay and Pacific Beach, in San Diego, CA (the City) are much like many other oceanfront areas with high tourism, and high-water tables; they have an expectation of, and a need for, uninterrupted services.

Elkhorn WWTF Decommissioning & Interceptor Sewer Extension
NUCA Business Journal
Spring, 2021
The project won the NUCA 2020 Top Jobs category for Sanitary Sewer Collection & Storm Drains.

How 2 Reduce SSOs Through Aggressive Cleaning
Pipe Cleaning Pro September 28, 2020
By: Kent Carlson
Stone Age Tools & Kent Carlson
Aggressive cleaning techniques applied within the structure of an SOP (Standard Operating Procedure), are proven to significantly reduce SSOs, restore the designed operational capacity, reduce maintenance costs and extend the service life of the entire system.

GBM Ortiz Mission Bay Three Pass
Case Study, August 19, 2020
By: Akkerman
San Diego based contractor Ortiz Corporation, chooses trenchless sewer installation using Akkerman Guided Boring Equipment and No-Dig Pipe to help overcome difficult soils and high traffic install

Important Considerations When Selecting a Sewer Cleaning Nozzle
Cleaner, August, 2021
By: Kent Carlson
Effective sewer cleaning begins with nozzle selection, and the tier system isn’t as helpful as you might think.

The Rediscovery of Vitrified Clay Pipe
Trenchless Technology, May, 2019
By: Jeff Boschert, P.E.
Municipalities across the country are rediscovering the value of the material properties of the Vitrified Clay Pipe (VCP Pipe).