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Arizona's Largest Condition Assessment
Author: Michael A. Fleury, John Warner (Pima County Wastewater Management Assessment)
Date: 5/107
From the WEF Collection Systems Specialty Conference, May 2007

Brown and Caldwell was retained by Pima County Wastewater Management Department (PCWMD) to assess the condition and recommend improvements to 230 miles of trunks/interceptors (15-inches or greater in diameter) in one year. The scope of services conducted by Brown and Caldwell included: Review past assessments, other documentation, and pertinent records Investigate the unlined and lined concrete pipe sewers as a first priority Assess the condition of the siphons (11) utilizing state-of-the-art sonar technology Prepare recommendations for rehabilitation and identify maintenance needs.