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Larry Peterson puts a zip tie on knife switch in a lockout safety procedure on a pump control panel from Orenco Systems.
When Johnny Cash sang “I walk the line,” he wasn’t referring to monitoring a line of 240 rural septic tanks.
But that is exactly what Larry Peterson does as Chelan County (Washington) Public Utility District treatment plant operator. The tanks contain 1,000 to 6,000 gallons...
