Pre-Emptive Strike

A single manhole failure inspires Arizona utility to upgrade its manhole inspection protocol and lower infrastructure life cycle costs.
Pre-Emptive Strike
Ed Rosales operates the jet/vac controls while cleaning a sewer line.

Alvin Robertson recalls his first look at a deteriorating i manhole, which inspired a new program to systematically map, inspect and rehabilitate his city’s sewer manhole network.

“It was 2003, and we were working on a lift station that was pumping into a manhole located in...

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