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2022 MS4 Annual Report <br />Pond Maintenance <br />L ; I � �' �i�( r: may_, -�,_�� ��i�. ��__ ;�� �r'�-� �. •..ri�i :T _ ---' <br />r <br />RFIJOYE AND REPIACE <br />„r DMMGED4B-MCHRCP <br />APRON TO COME WIGS <br />r TOCOME <br />SECTION OF RCP <br />I E 907.1 <br />I � � t•� <br />I ' ` <I f I I <br />II} <br />v , <br />' \ r <br />d ,T <br />f JM1l <br />iI@ I <br />I I <br />t <br />`qq& <br />• a, �. <br />REMOVE <br />APPRO%IMAE ' <br />rl {X. <br />wonwD <br />a EDUENT. ��4 <br />4 <br />I <br />/JkYt <br />o <br />I <br />F 4:ri 6 , <br />, <br />I <br />1��t�rll <br />U �xu. <br />d)i <br />4W. tt <br />u9EEDAND ERObIdI ^..t` <br />ODNTROL BLAWEr ' <br />REQUIRED IN MEN <br />915TURR® FOR <br />CONSTRUOTION ACCESS <br />c <br />I <br />T 'III. <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 />I <br />ijri� I •. <br />Table 6: Fairview Pond Water Qualitv AnalvsislP8 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 />N <br />(tonslyr) <br />Existing <br />3.7' average <br />NIA <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 />78-4 <br />averse depth <br />• r' I`���. ,le.. 3 ntb+'p"•II , ti' �\ �"�i' r�-f { �� I i <br />SECTION 411 U Average Removal Percentages <br />TSS 84% <br />TP 50% <br />MIIMM Y .. I M i ... <br />