Bowman project hydrogeologists evaluated the deepening of a quarry that was located immediately adjacent to the Hudson River with a floor 200-ft below the river. A field investigation was developed, and an analysis was performed to evaluate the potential to deepen the quarry by an additional 100-ft. The analysis included a series of drilling programs, pump tests and a water chemistry evaluation to determine the potential connection between the quarry and mine. Subsequent to the study by Bowman, the quarry was successfully developed and the lower two bench levels did not require increased dewatering efforts.