Red Hill Country Club was one of the first courses to be built by George C. Thomas in California. Nestled in the foothills of the San Gabriel Mountains, Red Hill Country Club is a historic gem. Originally built in 1921 as a nine hole course by Thomas, the course was expanded to eighteen holes by William P. Bell in 1946. Casey O’Callaghan was hired to help renovate the sand bunkers in anticipation of Red Hill Country Club’s centennial celebration. From the beginning, our focus was to embrace the club’s rich history. We researched and found aerial imagery from the 30s and 40s as well as a 1923 article in Pacific Golf and Motor Magazine where Thomas outlined his vision for the bunkering at Red Hill Country Club. We also studied Thomas’ book Golf Architecture in America and implemented many of these design principles on the back nine. The results have been an overwhelming success with the membership. Prior to consulting on the sand bunker renovation/restoration, O’Callaghan assisted the club in reducing their irrigated footprint by twenty percent while still maintaining the parkland character of the course.