B08_Attachment_3_Specs.pdf

This is a technical design document for a pump and motor system for Well No. 423. The document provides detailed well statistics and pumping head calculations for a water well installation. The well has a capacity of 1,300 gallons per minute with a static water level of 19 feet. The minimum depth of bowls is set at 80 feet, with a static water level of 18 feet, normal draw down of 40 feet, water fluctuation of 5 feet, safety factor of 25 feet, and well interference of 1 foot. The estimated total pumping head is 239 feet, calculated from the static water level of 79 feet, maximum draw down of 40 feet, operating pressure of 249 feet, and water table fluctuation of 5 feet.

The estimated horsepower requirement is 98.6 H.P., derived from calculations using the total pumping head of 282 feet multiplied by 1,100 gallons per minute, divided by 3,960, with a conversion factor of 0.80. The document includes a cross-sectional diagram of the well column showing the pump intake bowl and intake strainer configuration. The design specifications indicate the bowls should be set at 80 feet depth with a draw down safety margin included in the calculations.