A lot has changed in the liquid waste industry since Duane Shelar started helping out around the family business, Shelar Sanitation, as a child some 50 years ago. He has benefitted from watching the industry mature and provide a necessary and vital public service – both efficiently and with environmental protection in mind.He's pleased with all the changes ... and realizes he and other veteran pumpers need to keep an eye on technological advances and continue to improve. It's a matter of business survival and growth."Technological advances in the design and construction of septic systems, along with rapid changes in
