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2018 MS4 Annual Report <br />Pond Maintenance <br />,�= '- .�-_f��::__---�__-..-..�,4E�-'r�9UkP�'tt2(�hBE�%=::<:'� •--: -=% -��'J I.'.-- -- �� <br />,L t r t <br />% <br />� li ��'^� i�'"!It.I-r-'-r�FL <br />f <br />REND'E <br />t F DAAUGED 4B -NCH RCPT_,m , <br />APRON. REPAIR DAMAGEt 1,(1. .. 1' 8� ! SEED AND EROSION <br />C <br />IOCONNECIINGi{,� ! <br />CONTROLS <br />IAN(Ef <br />III SECTION OF RCP 1 Y ), ✓, i i 1 , ! I REQUIRED IN AREA • X-,_ <br />E <br />91)7.1 r, MIMRSED FOR <br />I 333»"CCCrtNI �� i• �i' 1' L CONSTRUCTION ACCESS T �t <br />A <br />�r1r1 ' tlt�ti I , I `illlil <br />�', <br />W <br />I,' 1 <br />0� 1 , APPRD70M4E1r <br />SED o�etEF�t,,1 I•-' liijti iF�..l <br />j�II W I <br />. "9Qr - rr�Ml• `� ' r :! <br />f7111+IU(�i_ IIS <br />f <br />r�,ky9. <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 />LU • <br />' <br />Outlet Diameter <br />I <br />Inlet Diameters <br />Two 36 -inch (NE, SE), 48 -inch (NW), 84 -inch <br />equivalent arch (SE) <br />..::I •-L,y4 i ': lY <br />(cy) <br />Efficiency <br />(Ibs;yr) <br />Efficiency <br />M i t <br />Lj <br />n <br />NI 01 <br />I <br />! u. .. <br />.ti //�� t ! I .,1y1,• . <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 />S:I <br />Table 6: Fairview Pond Water Qualitv AnalvsislP8 Results <br />, <br />3 . <br />tet1"N aaw <br />" <br />RECTION 'IN U <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 />..::I •-L,y4 i ': lY <br />(cy) <br />Efficiency <br />(Ibs;yr) <br />Efficiency <br />Reduction <br />(90) <br />(°lD) <br />(tonslyr) <br />Existing <br />3.7' average <br />NA <br />25.9 <br />214.4 <br />56.6 <br />72.4 <br />depth <br />1 <br />Excavate to 4.0' <br />1D40 <br />26.4 <br />218.6 <br />57.0 <br />72.9 <br />average depth <br />Excavate to 5.0' <br />4510 <br />28.0 <br />232.2 <br />58.3 <br />74.6 <br />- <br />average depth <br />Excavate to 6.0' <br />7agn <br />29.3 <br />243.3 <br />59.4 <br />76-0 <br />average depth <br />Excavate to 7.0' <br />..i 4 _ <br />30.6 <br />253.4 <br />60.4 <br />77.3 <br />avers a depth <br />`I <br />Excavate to 8.0' <br />14.920 <br />31.6 <br />262.0 <br />61.3 <br />78.4 <br />average depth <br />, <br />3 . <br />tet1"N aaw <br />" <br />RECTION 'IN U <br />Average Removal Percentages <br />TSS 84% <br />I <br />TP 50% <br />..::I •-L,y4 i ': lY <br />MMIL'l P010 11�1 1 pI 1 tBNIl <br />