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In order to determine the pumping station conditions for the <br />Orono Station it is necessary to add the head losses shown in <br />Exhibit E to the 18" forcemain line from Orono (Exhibit D) to get <br />the system curve when Orono alone is operating (Orono 18" FM + <br />20" FM curve of Exhibit D). To determine the pumping condition <br />when both stations operate the head loss at 4600 gpm in the 20" <br />line must be added to the Orono head loss in the 18" line at 2400 <br />gallons per minute. <br />Similar determinations are made for Long Lake (Exhibit C). <br />The pu��.p design conditions for the stations are then based <br />on 2200 gpm from the Long Lake Station and 2400 gpm from the <br />• Orono station. The head loss through the 20" line is 44 feet <br />at 4600 gpm. The total dynamic head for each station for pump <br />design is then: <br />Orono Long Lake <br />Flow <br />2400 gpm <br />2200 gpm <br />Static Head <br />36' <br />54' <br />Branch Loss <br />30' <br />18' <br />20" F.M. Loss <br />44' <br />44' <br />Total Dynamic Head <br />110' <br />116' <br />As can be seen on the curves, the pumps selected fit the <br />design condition very closely. With either station operating_ <br />by itself with one pump running, approximately 2800 gpm will be <br />pumped. If both pumps operate at either station approximately <br />-4- <br />