Laserfiche WebLink
I 1 Lth Super vumper <br />Storm Drainage Schematic <br />Al-6 <br />PS <br />Pipe Storage(PS) <br />100 Year Strom <br />+ 50% <br />Drainage Basin <br />Basin Descriptions <br />a 2 - 2 year undeveloped flow <br />a10 -10 year undeveloped flow <br />a 100 - 100 year undeveloped flow <br />A2-2 year developed flow <br />All 0 - 10 year developed flow <br />A100 - 100 year developed flow <br />T�I Wetpond - Treatment Storage (TS) <br />Water Quality Treatment - <br />2 Year Storm <br />i— MH #1 Outlet = TSO + TSR= TSC <br />MH #2 <br />Outlet - PSO + PSR = <br />to Breckenridge bioswale <br />Routing & Analysis <br />1. Run Waterworks for basin; 2, 10, & 100 year storms, undeveloped & <br />developed. Undeveloped basins a2, al 0, a100 . Developed basins A2, Al 0, A100. <br />2. Size orifice 2 yr @ 50% for Treatment Storage Orifice(TSO). Route Hyds A2 to size <br />orifice. Set Treatment Storage Riser (TSR) at 2 yr pek stage, P.ouce A10 & A100 <br />through TS. <br />3. Split TSR hydrograph from outlet hydrograph, . <br />4. Size Piped Storage Orifice (PSO) to paF-^ V & 100 undevelped release rates less <br />that passed thru wet portid.. • • " ' <br />S. Increase pined st&age by 50% to meet WADF&W criteria. <br />5: RoUie TSR hrdrograph through new PS <br />7. Add TSO & PSO hrdographs to obtain system performance. <br />Project Number. 96-011 <br />Date: January 1997 <br />By: TMK <br />Two Rivers Engineering <br />P. 0. Box 339 <br />Darrington,WA 98241 <br />(360)436-1524 <br />