Wells and Pumps

A centrifugal pump is installed at an altitude where atmospheric pressure head $H_{atm} = 10.0\text{ m}$ and vapor pressure head of water $H_v = 0.30\text{ m}$. The suction pipe head loss is $h_{fs} = 0.70\text{ m}$ and the manufacturer specifies a Net Positive Suction Head Required $NPSHR = 3.5\text{ m}$. The maximum permissible static suction lift ($h_s$) in meters to prevent cavitation is ________ (round off to 1 decimal place).