They need four thousand PSI precision to daylight the danger without a single spark. This is your June preview of Cleaner. In Portland, the Angelo underground crew performs daylighting jobs with their hydro excavator. Because one wrong move could trigger an infrastructure disaster. A music shop has failing cast iron pipes. If Pithor Plumbing can't rehab it in place, they're looking at a massive disruption to the business. In Charleston, twenty one year old Colby Nicholson is facing a college sewer system that is failing. He has a narrow winter break window to fix two hundred feet of pipe before students flood back. Read the June issue of Cleaner to see how they beat the odds.