Dave Kerr is a senior technical advisor for USABluebook, a division of HD Supply. Dave is a journeyman pipefitter with an AAS in Industrial Maintenance and Repair. He has more than 15 years of industrial experience and knowledge. Don Van Veldhuizen is the technical training manager for USABlueBook. Don has been in the water/wastewater field for more than 20 years, in roles including operations and management. He has also consulted water and wastewater systems in Antarctica, New Zealand and Papua New Guinea.