The reports describe an exploratory development program to identify, evaluate, and demonstrate dry techniques for significantly reducing NOx from stationary gas turbine engines. Volume 3 describes the scaleup of the rich-burn/quick-quench (RB/QQ) model to a full-scale (25 MW) gas turbine combustor, and documents test results from the full-scale evaluations. Test results were very positive, showing that the RB/QQ concept can reduce NOx to approximately 45 ppm (at zero % O2) for clean distillate oil and to approximately 75 ppm for a distillate oil doped to 0.5% nitrogen, as pyridine. CO emissions below the 100 ppm program goal were also demonstrated. These tests also indicate that the new combustor concept may be capable of low emission performance on petroleum residual oil and synthetic liquid fuels such as SRC II or shale oil. Results from testing on those fuels is included in Volume 4, an addendum.