Bob Oppold is the Vice President of Research & Development at International Sports Turf Research Center, Inc., [ISTRC], and the Chief Operating Officer of ISTRC New Mix Lab, LLC. [NML]. ISTRC specializes in the evaluation of undisturbed core samples from existing greens, sports fields, tees, and other venues where turf is grown under stress. NML is the certified lab on the USGA’s list of laboratories for new construction. Oppold, graduate of both the University of Notre Dame and the University of Iowa College of Law, has been in the industry since 1974, and has written over 2,000 ISTRC reports and tested thousands of different types of raw materials. His research work has included field work and the analysis of the properties of most of the commercially available peats, composts, and inorganic amendments.