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R2026-136 Resolution Authorizing Lake Decatur Watershed Farmland Conservation Program Agreement With Lynn Clarkson for a Bioreactor Drainage Water Treatment Structure
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R2026-136 Resolution Authorizing Lake Decatur Watershed Farmland Conservation Program Agreement With Lynn Clarkson for a Bioreactor Drainage Water Treatment Structure
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7/9/2026 4:52:11 PM
Creation date
7/9/2026 4:52:07 PM
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Resolution/Ordinance
Res Ord Num
R2026-136
Res Ord Title
R2026-136 Resolution Authorizing Lake Decatur Watershed Farmland Conservation Program Agreement With Lynn Clarkson for a Bioreactor Drainage Water Treatment Structure
Department
Public Works
Approved Date
7/6/2026
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TYPICAL SECTION TYPICAL SECTION S <br /> INLET 3-CHAMBER STRUCTURE OUTLET 2-CHAMBER STRUCTURE <br /> Inlet WCs Iia f Outlet *CS lid <br /> / Elev.686.3 rt / Elev. 685.8 ft <br /> Existing ground Existing ground <br /> Dev. 685.3 fi �� Dev.684.6 ft <br /> .E c Stoplogs N Stoplogs <br /> o °D (see Note 4) m (see Note 4) <br /> 1111z <br /> ii <br /> ii <br /> Existing v 12—inch non—pert. CPP DW, i <br /> 6-inch non-pa(. CPP, <br /> 12-inch 20 ft(see Notes 1 and 2) lin, <br /> /95 ft(see Notes 1 and 2) <br /> CPP DW <br /> I) O Flow Flow T <br /> .i III III ti , <br /> II ' " "'I Stable bole 8 <br /> Coupler(T)p) Flowline Stable base 6-inch non-Pat.CPP, Floelie (see Note 6) 8i 17:Q <br /> Elev.678.5 ft (see Note 6) 5 ft (see Notes 1 and 2) Elev.678.0 ft Backflow <br /> bottom stoplog ch valve <br /> iht <br /> 12—inch non-paNotchedoaog <br /> t.CPP DW, Center tie lineN <br /> 20 ft(see Notes 1 and 2) WCS sump d2= 6-inch non-pat. WCS sump (see Detai 1) <br /> Elev. 678.3 ft CPP(see Note 2) Elev.677.8 1t <br /> NOTES: DETAIL 1 Legend i <br /> QUANTITIES* 1. Install a minimum of 20 feet of non-perforated pipe Cut 1-inch notch in the bottom of =a_i� Earth fill <br /> Inlet water control structure, 3-chamber adjacent to the water control structure, on all lines: bottom stoplog in the outlet WCS. =Existing 12-inch CPP DW <br /> 1 I I '12-inch non-pert. CPP DWi 1 <br /> (HH1 = 8 ft I d1 = 12-inch I =d26-inch) upstream, downstream and center. Pipe must be PVC, <br /> 1 = <br /> dual-wall CPP, or CMP. 6-inch ron-pert. CPP <br /> Outlet water control structure, 2-chamber ---Existing Ground <br /> (H2 = 8 ft. I d3 = 6-in.) 1 2. PVC pipe shall conform to ASTM Standard D2241 or _ ®WCS stoplogs C.) <br /> 01785, with material 1120 or 1220. Dual wall CPP I 1^ <br /> 12-inch non-pert. CPP DW(ft) 40 must conform to ASTM Standard F2306 or F2648. - .1I-� <br /> 6-inch non-pert. CPP (ft) 125 CMP must conform to ASTM Standard A760 or B745. <br /> Check valve must conform to ASTM D 3034 with <br /> 6-6-inch pert CPP 44(ft) SDR35 pipe or stronger. IN-LINE CONTROL STRUCTURES <br /> 6-inch end cops (each) 4 3. Couplings between the water control structures and '` <br /> the non-perforated pipe must be watertight. <br /> Woodchips (cu. yd.) 403 % , <br /> 4. Stoplogs must provide must tight seals under a I <br /> 4 mil plasticyd.)** 400 Side Port Is On <br /> (Sc.(s9 minimum of 1 foot pressure head (except notched (Circle One) Left = <br /> r <br /> Geotextae (sq. yd.) 216 board). Side Of Structure, <br /> 5. Appropriately mark bioreactor perimeter to avoid Looking Downstream t <br /> Excavation (cu. yd.) 474 r.► 73 <br /> - <br /> vehicle, implement, or livestock traffic. Ii - <br /> Earth fill (cu. yd.) 144 6. Place structure and pipe coupler on a stable base. A r;1; • <br /> 6-inch backflow check valve (each) 1 stable base may be compacted earth, compacted fill i ri ,. <br /> sand, or a concrete pod. Extend the stable base no <br /> * 0uantities do not include tile/pipe couplers less than 1 foot beyond structure. Flow C,, ,,........;�� me NAME <br /> or extra material for geotextile/plastic overlap 7. Excavated material placed around structure and pipes Flow ----- <br /> " Accounts for 1 ft. overhang around perimeter shall be hand compacted in 4-inch lifts. <br /> F\Oil 10111 01010 <br /> � L.)0111Portman t.o 1 u 31L1)2111,-lseese �r• OF v <br /> LA/00V <br />
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