Under Lock and Key

The City of Oroville gets serious about preventing manhole cover thefts and unauthorized dumping with the quick-install SewerLock system.
Under Lock and Key
Public Works operator Cody Nissen, left, steadies a SewerLock insert while Jeremy Wachtel uses a roto-hammer drill to bore holes in the concrete manhole cover frame. A portable Honda 2,000-watt generator supplies the power.

Vandals in Oroville, Calif., stole manhole covers for their recyclable value and dumped everything from furniture and rocks to bushes and debris down the structures. Of the six occurrences, three caused minor sanitary sewer overflows.

"Fortunately, alert citizens called us and...

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