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STORMWATER SITE PLAN <br />NOVEMBER 7, 2019 <br />COMPASS HEALTH SUPPORTIVE HOUSING <br />The actual storage will be made up of a combination of 8' pipe and 72" manhole sections as <br />follows (note the 48" connector sections have been excluded): <br />8 foot pipe 32 feet 1,525 cf <br />6 foot structure 14 feet 396 cf <br />TOTAL 1,921 cf <br />The total storage is greater than the design. <br />The flow control device will consist of an 8" riser containing two orifices to control storm event <br />runoff. For drainage basin input parameters and flow frequency calculations, pond and flow <br />control parameters and flow duration analysis see WWHM2012 Output in Appendix C. <br />Outlet Elevation 104.30 feet <br />15Y Orifice Diameter 0.50 inches <br />1st Orifice Elevation 102.30 feet <br />2nd Orifice Diameter 1.13 inches <br />2nd Orifice Elevation 110.80 feet <br />Overflow Elevation 111.30 feet <br />MR 8: WETLAND PROTECTION <br />There are no on -site or off -site wetlands to be protected. <br />MR 9: OPERATIONS AND MAINTENANCE <br />An operations and maintenance manual will be provided prior to final approval. <br />PAGE 12 <br />P:\Work\Projects\2017\17-125 Environmental Works\CE\DOCS\Final SSP 17-125.doc <br />