3. An M-rated self-priming centrifugal pump will be used to dewater an excavation during construction. The required pumping volume is estimated at 250 gal/min. The pump will be located 10 ft above the bottom of the excavation. The suction line will consist of 20 ft of 3-in hose, and the discharge line will consist of 80 ft of 3-in hose. Water will be discharged 30 ft above pump level. What is the total head developed