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Mr. Clapper and Mr. Romig <br /> September 24, 1996 <br /> Page 7 <br /> of the pond spillway. Existing sump drains would be used to remove water from the dry <br /> well. The useable pond storage volume would increase to about 137,000 gallons, as <br /> shown on the curve on Drawing 134-0.01. <br /> The proposed pumping capacity of the new in-line pumps is approximately 450 gpm <br /> for one pump and approximately 585 gpm for two pumps operating in parallel. The pump <br /> and system curves showing the operating points for the pumps (assuming Goulds 3996 <br /> pumps are used) is shown on drawing D4.0.01. <br /> Much of the existing piping In the pump station would remain unchanged or would <br /> be relocated for the modified system. Refer to Drawing D4-6-01 for details. The piping <br /> that would remain unchanged is shown on the drawing with thinner lines than the new or <br /> modified piping. <br /> The existing grating In the pump station already has many holes cut into it. For <br /> safety reasons, it is recommended that new grating be installed after the pump station <br /> modif[cations have been completed. Also,there Is an existing crane runway beam installed <br /> down the centerline of the pump Station. However, there is currently no hoist Installed on <br /> the beam. We recommend that a 1-ton hoist be installed on the beam to facilitate the <br /> Installation of the new pumps and motors. Although the travel of the hoist would be <br /> limited to the centerline of the station and the new pumps would not be directly under the <br /> centerline, the location of the new pumps should be close enough to allow for the use of <br /> the hoist (with the help of some human force to swing the pumps over approximately 15 <br /> Inches). <br /> The existing level probe well is open at the bottom to allow for measurement of the <br /> water level in the sump. The modified system will require that the well be watertight and <br /> piped into the 8-inch pipeline drain return line which leads to the seepwater pond. The <br /> level probe will then be hydraulically connected to the water level in the pond, which is the <br /> 80' d Z00' oN Sb: T T 96 bZ daS Z0K-T9Z-202-T : ­I31 JoSSd '8 Ja i aagM • m- m <br />