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2018_05-22_PWETCpacket
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2018_05-22_PWETCpacket
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5/23/2018 9:34:25 AM
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Commission/Authority Name
Public Works Commission
Commission/Committee - Document Type
Agenda/Packet
Commission/Committee - Meeting Date
5/22/2018
Commission/Committee - Meeting Type
Regular
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2017 MS4 Annual Report <br />Pond Maintenance <br />M+rs��'-4 <br />r DAMA�uceoae-NCH RCPT x i , illll F _ - �,}•�'}p� ii''"i-.�':}i.. <br />APRON. REPAIR DAIMOEiHIIrb.(I�Ac(3 •I' _ , SEED AND ER0.410N <br />TOCONNECSINOIII k lr� ] 1',•y- N. II, I,�E( f , . CONTROL BLANKET <br />SECTION OFRCP `ir��J, !3 I I l'}t 1,`� E! I + REQUIRED IN AREA <br />1E 807.1 a^ Ylt iI�I'llI• ', 1''��ew 1 I LOISTU�FOR �y <br />_ i' ,y--- CONSTRUCTION ACCESST <br />{ �I) REAI MOVE <br />M'I'ROXIMELV <br />sono aU YD 39`y4 I ' i <br />\ '•I 1 OF SEDIMENT iI: ,L��3 •�/ �' <br />'^'M <br />Table 5: Fairview Pond Summary <br />Drainage Area <br />514.5 acres <br />Pond Area <br />2.15 acres (per 2016 pond inspection) <br />Impervious Surface <br />79% <br />Current Average Depth <br />3.7 feet <br />Current Wet Volume <br />8.0 ac -ft <br />Outlet Diameter <br />78 -inch (NW) <br />Inlet Diameters <br />Two 36 -inch (NE, SE), 48 -inch (NW), 84 -inch <br />equivalent arch (SE) <br />IIfiI , <br />Table 6: Fairview Pond Water Oualitv Anelvsis;P8 Results <br />I <br />, <br />I,yif <br />II i •II <br />MUMN 1411 U <br />Average Removal Percentages <br />TSS 84% <br />TP 50% <br />Volume to <br />TP <br />Annual TP <br />TSS <br />Annual <br />Option <br />Description <br />Excavate <br />Removal <br />Reduction <br />Removal <br />TSS <br />(cy) <br />Efficiency <br />(lbs.tyr) <br />Efficiency <br />Reduction <br />(%) <br />(°fo) <br />(tonstyr) <br />Existing <br />3.7' average <br />N/A <br />25-9 <br />214.4 <br />56.6 <br />72.4 <br />depth <br />1 <br />Excavate to 4.0' <br />1040 <br />26-4 <br />218.6 <br />57.0 <br />72.9 <br />average depth <br />2 <br />Excavate to 5.0' <br />4510 <br />28.0 <br />232.2 <br />58.3 <br />74.6 <br />average depth <br />3 <br />Excavate to 6.0' <br />7980 <br />29-3 <br />243.3 <br />59-4 <br />76-0 <br />average depth <br />4 <br />Excavate to 7.0' <br />11,450 <br />30.6 <br />253.4 <br />60.4 <br />77.3 <br />average depth <br />5 <br />Excavate to 8.0' <br />14,920 <br />31.6 <br />262.0 <br />61.3 <br />T$-4 <br />average depth <br />I <br />, <br />I,yif <br />II i •II <br />MUMN 1411 U <br />Average Removal Percentages <br />TSS 84% <br />TP 50% <br />
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