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2021 MS4 Annual Report <br />Pond Maintenance <br />t'� if '�J///�'-•;,-'"xs�e?7�'"S..-,.w �w .'a +.�. i�i �1�i r� ® `=i <br />•r` REMOVE ARDREPCEf ' ` �-l� lN�r-. �� 1, r lr( ✓ , \ <br />r f DMMGEDI&INCH RRCP ° 1. ;l.rdrrY }F �,� '3'•, ✓ i�: •.ram' <br />APRON -TOCOMEMAGEI r �I II ` r i' -� r 9EED AND EROSIdI <br />roco NOFRwcf ' ; 'd �.. 'I, ,f 1, ,. ,� CONTROL IN ARER <br />SECTION OF RCP 1 ,-f ✓ IIL...ii��Illl�� ff _- ll i� REDUIRED R. AREA <br />e wT I4 1 ', i; ,' itb`M , ' ,' DISTUTRF FOR <br />• �I { 1 COIISTRUGTIdJ ACCESS <br />It <br />� � t� @ , � . 1 Gy jl l•� • � •, it 1� I 1 � _ <br />I � G { I�,I Y lt��� �•r �t�r ���� I� <br />YW �tf, <br />MPRO%I <br />t MATELY <br />e000a vD <br />S I Dr erflnnErrt t- •,p '( p.:' <br />,, <br />, I� ^• it t I �i 't t itjt,l <br />- �^'I�'i-�r ' I I i ����� � � 5 I, ',�1�ItT�i C# I A � it •� <br />IY.I'I $•r <br />II St I. j <br />I I <br />-u <br />rim <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 />?'fee <br />Table 6: Fairview Pond Water Qualitv Analvsis!P8 Results <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 />(IbVyr) <br />Efficiency <br />Reduction <br />N <br />IDfo) <br />(tonslyr) <br />Existing <br />3.T 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.D' <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 />14,92D <br />31.6 <br />262.0 <br />61.3 <br />78-4 <br />averse depth <br />f , <br />3EC IDN All U <br />Average Removal Percentages <br />TSS 84% <br />>- <br />TP 50% <br />PAI MM YOID ]MR 1 M i AEEl9 <br />