PERMALINER, SMOKE TESTING, MANHOLE REHAB, LINE CLEANING & VIDEO INSPECTION

Zwald Industrial Services started out jetting sand and debris from sewer lines, mostly for the Netarts Oceanside Sanitary District. As the need for videotaping the cleaned lines and then repairing the documented cracks and breaks came up, we purchased the Aries camera and the Permaliner "No Dig" repair system. Sludge pond, grease trap, storm drain and catch basin cleaning go hand in hand, we also offer manhole grouting and smoke testing. Confined Space Certified CCB 171526.

Sondi being lowered into a manhole.	Ken and Sondi cleaning sludge out of a 1.5 million gallon aeration basin for the City of Dallas.
The Zwald crew laying out a Point Repair in Toledo, Oregon.	Don't Excavate... Rehabilitate! Lining 120 feet, 6 inch sewer line for Linfield College.
The Industrial crew preparing to shoot a liner in McMinnville, Oregon.	Our Industrial crew shooting a liner underneath a street at Linfield College in McMinnville, Oregon.
Rehabilitating a manhole for the city of Bay City, Oregon.	Smoke testing in sewer lines and storm drains quickly identifies any problem areas.
Replacing two grease trap lines and a sewer line at Denny's Restaurant in Tillamook.	Jetting sand out of a line for Mo's Restaurant in Cannon Beach, Oregon.
Sondi and crew lined over 150 feet of 6-inch vitrified clay pipe running along and down the face of a 100-foot cliff in St. Helens, Oregon. Zwald Industrial was featured in the April 2009 issue of "Cleaner" magazine for this effort!
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