NCPI - The National Clay Pipe Institute
Research, development, training, education, and technical expertise. The foremost authority on clay pipe.
Sustainable product certification through MTS, the Institute for Market Transformation to Sustainabilty.
The American Society of Civil Engineers, Pipelines Division.
Standard Specifications for Public Works Construction.
The Engineering Contractor's Association, representing the underground construction industry across Southern California.
United Contractors Association
UCON, representing heavy civil engineering companies of all sizes. The leading union contractors association in California.