sentences:  While one would expect maintenance frequency to increase as a gate ages, Reclamation decreased the frequency of regular maintenance and lubrication over time due to budget constraints.In addition, the lubricant used by Reclamation did not conform to the Corps' original design specifications; it was a new, environmentally-friendly lubricant that was not sufficiently waterproof, allowing water to enter the pin-hub interface and cause the corrosion that resulted in increased friction.This failure caused no fatalities and it had a significant positive impact on the dam industry.