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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.

Document Type: Research Article


Publication date: 2007-01-01

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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