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Home My WebLink AboutSW4170901 - Fleetwood Volunteer Fire Department (2)Storage Node: SEDIMENT -CHAMBER -UST (continued) Outflow Weirs Outflow Orifices SN Element Weir Flap Crest Crest Length Weir Total Discharge ID Type Gate Elevation Offset Height Coefficient (ft) (ft) (ft) (ft) 1 BYPASS -OVERFLOW Rectangular No 298550 450 400 550 333 SN Element Orifice Orifice Flap Circular Rectangular Rectangular Orifice Orifice ID Type Shape Gate Orifice Orifice Onfice Invert Coefficient Diameter Height Width Elevation (in) (in) (in) (ft) 1 SEDIMENT -CHAMBER -TO -SAND -FILTER Side CIRCULAR No 6.00 2981 00 061 Output Summary Results Peak Inflow (cfs) Peak Lateral Inflow (cfs) . Peak Outflow (cfs) . Peak Exfiltration Flow Rate (cfm) Max HGL Elevation Attained (ft) Max HGL Depth Attained (ft) Average HGL Elevation Attained (ft) ... Average HGL Depth Attained (ft) . . Time of Max HGL Occurrence (days hh mm) Total Exfiltration Volume (1000 -ft') .. ... ... . Total Flooded Volume (ac -in) Total Time Flooded (min) Total Retention Time (sec) 871 ... 871 453 000 298591 491 298315 215 0 1203 .. ................. .... 0.000 0 0 000 u Stage (ft) W W W W .+. :F. T T N N VI 171 C1 01 O C1 r O IV i. O W .� N i. Q1 Oo N N j. Qf ao W N i. c,w i. N Y 0 w N 0o Q N i. 0 co V O___________i.__r___i__:_______i___i __i______________i_______ __ _ ................. to l ._.___r___i__r___r__.r___r___,___r___r O i , r i O O O W r r r r r r r r � r i O O g c yo r r r r r r D o G G r , •, o r r � � r r r � r r � � � � r � r r � r e+ r r r r .1 O o -N o m r r r r r r rr r r r r r r r r _ _r__.___r___. ................ __. ___r __.___r__.r__r_ O O O b r r i • r i r r r � I . r r r r r i r r i i r i N O O or r i r . r i r r •r � r i i i i r r � � r r r r i r r r r i i i i , , O O • O r � i p ------------------------- O N . O O J r r r r . O N iTl N H N Ot C7 O 01 O'! H IV j. Q OD N j. i1 CD N j. 01 OJ fV j. C1 00 N j. O 00 N j. Ca CO IV j. C+ CD Stage (ft) Storage Node: SEDIMENT -CHAMBER -UST Input Data Invert Elevation (ft) Max (Rim) Elevation (ft) .... Max (Rim) Offset (ft) . . Initial Water Elevation (ft) Initial Water Depth (ft) . Ponded Area (ft) Evaporation Loss Storage Area Volume Curves Storage Curve UST Stage Storage Storage Area Volume (ft) (ft2) (ft') 0 00000 0 000 01 614.4917 3072 02 861 6264 10453 03 1046 1357 19992 04 1197 3304 31209 05 1326 6499 43829 06 1440 0000 57662 07 1540 9088 72567 08 1631.6862 88430 09 1713 9428 1051 58 1 1788 8544 122672 1 1 1857 3099 140903 12 1920 0000 159790 13 1977 4731 179277 14 2030 1724 199315 1 5 2078 4610 219858 1 6 2122 6399 240864 17 2162 9609 262292 1 8 2199 6363 2841 05 1 9 2232 8457 306267 2 2262.7417 328745 21 2289 4541 351506 22 2313.0932 374519 23 2333 7523 397753 24 2351 5102 4211 79 25 2366 4319 444769 26 2378 5710 468494 27 2387 9698 492327 28 2394 6607 516240 29 2398 6663 540207 3 2400 0000 564200 3 1 2398 6663 588193 32 2394 6607 6121 60 33 2387 9698 636073 34 2378 5710 659906 35 2366 4319 683631 36 2351.5102 707221 37 2333 7523 730647 38 2313 0932 753881 39 2289.4541 7768 94 4 2262 7417 799655 41 2232 8457 8221 33 42 2199 6363 844295 43 2162 9609 8661 08 44 2122 6399 887536 45 2078 4610 908542 46 2030 1724 929085 47 1977 4731 949123 48 1920 0000 968610 49 1857.3099 987497 5 1788 8544 1005728 51 1713 9428 1023242 52 1631 6862 10399.70 53 1540 9088 10558.33 54 1440 0000 10707.38 55 1326 6499 1084571 5.6 1197 3304 10971 91 57 1046 1357 1108408 58 861 6264 1117947 59 6144917 1125328 6 1 1128405 7 1 1128505 298100 2991 00 1000 2981 00 000 000 000 Storage Node: SAND -FILTER (continued) Output Summary Results Peak Inflow (cfs) Peak Lateral Inflow (cfs) Peak Outflow (cfs) Peak Exfiltration Flow Rate (cfm) Max HGL Elevation Attained (ft) Max HGL Depth Attained (ft) Average HGL Elevation Attained (ft) . Average HGL Depth Attained (ft) . Time of Max HGL Occurrence (days hh mm) Total Exfiltration Volume (1000-ft3) . . Total Flooded Volume (ac -in) Total Time Flooded (min) Total Retention Time (sec) 1 09 000 0 11 000 298585 535 298311 261 0 1205 0 000 0 0 000 1, Q Stage (ft) O O O O .>• ..>, ,.� N N N N W W W W f. f. f. f. Or Vr N VM 0Y G'1 O NL L-)Z*j N 1. Q 00 N N U. 0 CO W N j. P 00 L N L b 00 N N j. 0 00 C) N& 0 0 V N i. 01 OD w N" 0 w O N L b O O op coo" i 1 .A „1 N N N N N w W W W W j. f. i N L C1 00 N L o ao N d. o o N j. o o N jj Stage (ft) VI O Cl O p A V V V V V CO NL C1 N Lb 00 Storage Nodes Storage Node: SAND -FILTER Input Data Invert Elevation (ft) Max (Rim) Elevation (ft) Max (Rim) Offset (ft) Initial Water Elevation (ft) Initial Water Depth (ft) Forded Area (ft2) Evaporation Loss Storage Area Volume Curves Storage Curve SAND -FILTER Stage Storage Storage Area Volume (ft) (ft') (ft') 0 512 0 000 1 512 51200 2 512 102400 3 512 153600 4 512 204800 44 512 225280 45 001 227840 5 001 227841 10 001 227846 298050 299050 1000 298050 000 000 000 Pipe Results SN Element Peak Time of Design Flow Peak Flow/ Peak Flow Travel Peak Flow Peak Flow Total Time Froude Reported ID Flow Peak Flow Capacity Design Flow Velocity Time Depth Depth/ Surcharged Number Condition Occurrence Ratio Total Depth Ratio (cfs) (days hh mm) (cfs) (ft/sec) (min) (ft) (min) 1 SAND -FILTER -OUTLET Oil 0 1206 1565 001 446 015 0.15 012 000 Calculated 2 SITE -TO -OUTFALL 3.59 0 1203 13330 003 1807 022 023 Oil 000 Calculated Flap No of Gate Barrels No 1 No 1 Pipe Input SN Element Length Inlet Inlet Outlet Outlet Total Average Pipe Pipe Pipe Manning's Entrance Exit/Bend Additional Initial ID Invert Invert Invert Invert Drop Slope Shape Diameter or Width Roughness Losses Losses Losses Flow Elevation Offset Elevation Offset Height (ft) (ft) (ft) (ft) (ft) (ft) N (in) (in) (cfs) 1 SAND -FILTER -OUTLET 40 00 297800 000 297600 000 200 50000 CIRCULAR 15 000 15 000 0.0120 05000 05000 00000 000 2 SITE -TO -OUTFALL 24000 297600 000 290500 000 71 00 295800 CIRCULAR 24 000 24 000 00120 05000 05000 00000 000 Junction Results SN Element Peak Peak Max HGL Max HGL Max Min Average HGL Average HGL Time of Time of Total Total Time ID Inflow Lateral Elevation Depth Surcharge Freeboard Elevation Depth Max HGL Peak Flooded Flooded Inflow Attained Attained Depth Attained Attained Attained Occurrence Flooding Volume Attained Occurrence (cfs) (cfs) (ft) (ft) (ft) (ft) (ft) (ft) (days hh mm) (days hh mm) (ac -in) (min) 1 SAND -FILTER -OUTLET 0 11 000 297808 008 000 692 297806 006 0 1938 0 0000 000 000 2 SITE -OUTLET 359 000 297623 023 000 977 297604 004 0 1203 0 0000 000 000 Junction Input SN Element Invert Ground/Rim Ground/Rim Initial Initial Surcharge Surcharge Ponded Minimum ID Elevation (Max) (Max) Water Water Elevation Depth Area Pipe Elevation Offset Elevation Depth Cover (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft') (in) 1 SAND -FILTER -OUTLET 297800 298500 700 2978.00 000 000 -298500 000 000 2 SITE -OUTLET 297600 298500 900 297600 000 000 -298500 000 000 Runoff (cfs) O N W A Ul 61 V OD (O U1 U1 N W CJ w A W U1 U1 O U1 V m m m (D U1 O Ln a z; 3 0 N P3 0 Rainfall (in/hr) O O O O N N N N41 LJ (il CJ A A A N A O m N A OS W N N A m m W N A 07 W A N A 07 O- m z; 0 N O 51 oA Ln En 0 I I I I 1 1 1 I ' I I�—I— 1 1 1 I I I I I I I I I j I I I I I i I I—I— I I {II Illj'� j I , I III j I I I dii 71- F I I I II i I I S I j I I I I ' 1 I 1 1 Rainfall (in/hr) O O O O N N N N41 LJ (il CJ A A A N A O m N A OS W N N A m m W N A 07 W A N A 07 O- m z; 0 N O 51 oA Ln En 0 M 0 m Q Q N O I 1 1 1 I ' I I�—I— 1 1 1 I I I I I IIl�ll I i I I I I I l l l l I ' I I II i I I S I —I— I 1 I 1 1 I I I I i t i ;'lll�j;l II Ij — I hill I I'' ; �- M 0 m Q Q N O Subbasin Hydrology Subbasin : Sub -01 Input Data Area (ac) 206 Weighted Curve Number 98.00 Rain Gage ID FLEETWOOD Composite Curve Number Area Soil Curve SoNSurface Description (acres) Group Number 206 - 9800 Composite Area & Weighted CN 206 9800 Subbasin Runoff Results Total Rainfall (in) 325 Total Runoff (in) 302 Peak Runoff (cfs) 872 Weighted Curve Number .. 9800 Time of Concentration (days hh mm ss) 0000600 Peak Flow Total Time Reported Depth/ Surcharged Condition Total Depth Ratio (min) 0.12 0 00 Calculated 011 0 00 Calculated Link Summary SN Element Element From To (Outlet) Length Inlet Outlet Average Diameter or Manning's Peak Design Flow Peak Flow/ Peak Flow Peak Flow ID Type (Inlet) Node Invert Invert Slope Height Roughness Flow Capacity Design Flow Velocity Depth Node Elevation Elevation Ratio (ft) (ft) (ft) N (in) (cfs) (cfs) (ftlsec) (ft) 1 SAND -FILTER -OUTLET Pipe SAND -FILTER -OUTLET SITE -OUTLET 4000 297800 297600 50000 15 000 0.0120 0.11 15.65 0.01 446 0.15 2 SITE-TO.OUTFALL Pipe SITE -OUTLET OUTFALL 24000 2976.00 290500 29.5800 24.000 00120 359 13330 003 1807 023 3 SEDIMENT -CHAMBER -TO -SAND -FILTER Orifice SEDIMENT -CHAMBER -UST SAND -FILTER 2981.00 2980.50 6 000 109 4 FILTER -MEDIA Outlet SAND -FILTER SAND -FILTER -OUTLET 2980.50 2978.00 011 5 BYPASS -OVERFLOW Weir SEDIMENT -CHAMBER -UST SITE -OUTLET 2981.00 297600 350 Total Time Flooded min 000 000 000 000 Node Summary SN Element Element Invert Ground/Rim Initial Surcharge Ponded Peak Max HGL Max Min Time of Total ID Type Elevation (Max) Water Elevation Area Inflow Elevation Surcharge Freeboard Peak Flooded Elevation Elevation Attained Depth Attained Flooding Volume Attained Occurrence (ft) (ft) (ft) (ft) (ft') (cfs) (ft) (ft) (ft) (days hh mm) (ac -in) 1 SAND -FILTER -OUTLET Junction 297800 298500 297800 000 000 011 297808 000 692 0 0000 000 2 SITE -OUTLET Junction 297600 298500 297600 000 000 3 59 297623 000 977 0 0000 000 3 OUTFALL Outfall 290500 359 290523 4 SAND -FILTER Storage Node 298050 299050 298050 000 1 09 298585 000 5 SEDIMENT -CHAMBER -UST Storage Node 2981 00 2991 00 2981 00 000 871 298591 000 Subbasin Summary SN Subbasin Area Weighted Total Total Total Peak Time of ID Curve Rainfall Runoff Runoff Runoff Concentration Number Volume (ac) (in) (in) (ac -in) (cfs) (days hh mm ss) 1 Sub -01 206 9800 325 302 622 872 0 00 05 00 Project Description File Name POST -CON -ROUTING SPF Project Options Flow Units CFS Elevation Type Elevation Hydro;ogy Method .. SCS TR -55 Time of Concentration (TOC) Method User -Defined Link Routing Method Hydrodynamic Enable Overflow Ponding at Nodes . YES Skip Steady State Analysis Time Periods .. YES Analysis Options Start Analysis On Sep 07, 2017 00 00 00 End Analysis On Sep 10, 2017 00 00 00 Start Reporting On Sep 07, 2017 00 00 00 Antecedent Dry Days 0 days Runoff (Dry Weather) Time Step 001 0000 days hh mm ss Runoff (Wet Weather) Time Step 0 00 05 00 days hh mm ss Reporting Time Step 0 00 00 05 days hh mm ss Routing Time Step 5 seconds Number of Elements Rainfall Details SN Rain Gage Data Data Source Rainfall Rain State County Return Rainfall Rainfall ID Source ID Type Units Period Depth Distribution (years) (inches) 1 FLEETWOOD Time Series 1YR-24HR Cumulative inches North Carolina Rowan 1 325 SCS Type II 24 -hr Qty Rain Gages 1 Subbasms 1 Nodes 5 Junctions 2 Outfalls .. 1 Flow Diversions... ...... 0 Inlets 0 Storage Nodes 2 Links 5 Channels. 0 Pipes 2 Pumps. 0 Onfices ....... 1 Weirs ... 1 Outlets .. .. . ......... .. 1 Pollutants 0 Land Uses 0 Rainfall Details SN Rain Gage Data Data Source Rainfall Rain State County Return Rainfall Rainfall ID Source ID Type Units Period Depth Distribution (years) (inches) 1 FLEETWOOD Time Series 1YR-24HR Cumulative inches North Carolina Rowan 1 325 SCS Type II 24 -hr 1 year, 24 hour Routing BREC, P.A. Fleetwood Fire Department I Stormwater Calculations 10 Storage Node: SEDIMENT -CHAMBER -UST (continued) Outflow Weirs SN Element Weir Flap Crest Crest Length Weir Total Discharge ID Type Gate Elevation Offset Height Coefficient (ft) (ft) (ft) (ft) 1 BYPASS -OVERFLOW Rectangular No 298550 450 4.00 550 333 Outflow Orifices 429 Peak Lateral Inflow (cfs) 429 SN Element Orifice Orifice Flap Circular Rectangular Rectangular Orifice Orifice ID Type Shape Gate Orifice Orifice Orifice Invert Coefficient Average HGL Elevation Attained (ft) ..... 2981 66 Diameter Height Width Elevation Time of Max HGL Occurrence (days hh mm) 0 0601 (in) (in) (in) (ft) 1 SEDIMENT -CHAMBER -TO -SAND -FILTER Side CIRCULAR No 1200 2981 00 0.61 Output Summary Results Peak Inflow (cfs) ... 429 Peak Lateral Inflow (cfs) 429 Peak Outflow (cfs) 088 Peak Exfiltration Flow Rate (cfm) 000 Max HGL Elevation Attained (ft) 298353 Max HGL Depth Attained (ft) 253 Average HGL Elevation Attained (ft) ..... 2981 66 Average HGL Depth Attained (ft) 066 Time of Max HGL Occurrence (days hh mm) 0 0601 Total Exfiltration Volume (1000 -ft) 0 000 Total Flooded Volume (ac -in) 0 Total Time Flooded (min) 0 Total Retention Time (sec) 000 O O r r O O O O r O O Ci O O O 00 C/ N O (11) asL,►s Iti ID N V LO V UI N N N M M N N N N N T !` r r r O O O O O r . • i , . . . , . . . . - i r , . . r . r r ------------- ------ ------------------- r - --- r ___r__.r__-__.r _.r ._�._.r__.r._�___r__�. _.r -------------- _' .._r___r __.__.r•• -r- i•--r-•-, .�.._J_..L..J.._J...1..J...1._J_..J...L..J.__J...L..J...l.__t._J...L._J_._J.._L_.J...L_. J...J.._L.._._.l___l N W V N V W V rS ly N W V K N -t W V '1' N M co V '! N N co V '? N r W V K N O V C7 Lr b N 41 41 N .•F •� M M M M N N N N T r T r O O O O (11) afieis Storage Node: SEDIMENT -CHAMBER -UST Input Data Invert' Elevation (ft) :. .. 2981 00 Max (Rim) Elevation (ft) .. 2991 00 Max (Rim) Offset (ft) 1000 Initial Water Elevation (ft) 2981 00 Initial Water Depth (ft) 000 Ponded Area (ftp) ... 000 Evaporation Loss 000 Storage Area Volume Curves Storage Curve UST Stage Storage Storage Area Volume (ft) (ftp) (ft') 0 00000 0 000 01 6144917 3072 02 861 6264 10453 03 1046 1357 199.92 04 1197 3304 312.09 05 1326 6499 43829 06 1440 0000 57662 07 1540 9088 72567 08 1631 6862 88430 09 1713 9428 1051 58 1 1788 8544 122672 1 1 1857 3099 140903 1 2 1920 0000 159790 13 1977 4731 179277 14 2030 1724 199315 1 5 2078 4610 219858 1.6 2122.6399 240864 1 7 2162 9609 262292 18 2199.6363 284105 1 9 2232.8457 306267 2 2262 7417 328745 21 2289 4541 351506 22 2313 0932 374519 23 2333 7523 397753 24 2351 5102 4211 79 25 2366 4319 444769 26 2378 5710 468494 27 2387 9698 492327 28 2394.6607 516240 29 2398 6663 540207 3 2400 0000 564200 3.1 2398 6663 5881 93 32 2394 6607 6121 60 33 2387 9698 636073 34 2378 5710 659906 35 2366 4319 683631 36 2351.5102 707221 37 2333 7523 730647 38 2313 0932 753881 39 2289 4541 776894 4 2262 7417 799655 41 2232 8457 8221 33 42 2199 6363 844295 43 2162 9609 8661 08 44 2122 6399 887536 45 2078 4610 908542 46 2030 1724 929085 47 1977 4731 9491 23 48 1920 0000 968610 49 1857 3099 987497 5 1788 8544 1005728 51 1713 9428 1023242 52 1631 6862 1039970 53 1540 9088 1055833 54 1440 0000 1070738 5.5 1326 6499 1084571 56 1197 3304 10971 91 57 1046.1357 1108408 58 8616264 1117947 59 6144917 1125328 6 1 1128405 7 1 1128505 Storage Node: SAND -FILTER (continued) Output Summary Results Peak Inflow (cfs) Peak Lateral Inflow (cfs) . . Peak Outflow (cfs) Peak Exfiltration Flow Rate (cfm) Max HGL Elevation Attained (ft) Max HGL Depth Attained (ft) Average HGL Elevation Attained (ft) Average HGL Depth Attained (ft) Time of Max HGL Occurrence (days hh mm) Total Exfiltration Volume (1000-ft3) Total Flooded Volume (ac -in) Total Time Flooded (min) Total Retention Time (sec) 088 0.00 007 000 298353 303 298142 092 0 0601 0 000 0 0 000 O O 01 O Stage (ft) O N Y C1 O 1 N Y C0 ao N N Y C1 ao W N Y 4 W j. N �. 0 w N N i. Cf oD 0 N A 0 0 V N Y 0 00 W N Y 0 W 0 N Y 0 00 O -. -r- " 1-"r-.--r-.--r-.--r"-r-1-'r "i"'r-�-"r--r'"r-�-"r"-, -r".r.r._r.r__r_i__r_�__r_i. _r_-...r__� _r._r_r__r-�.-r•i__r. r_1. .. i_.r_i__r_.__r__._r_.� ......... ....... _r__� .r. _�.r__r_�__r_�__r_i__r_�_.r__�__r__ ' i O Ql O 01 Of V V V V V W Oo Oo 00 00 O t0 V' pp i NL C'1 6 N L 0 00 N L C0 00 N L CI 00 N Y A 00 N i. C1 00 N j. 0 0 N Y O0 N Y Cl 00 N .1. 0 00 O Stage (ft) Storage Nodes Storage Node: SAND -FILTER Input Data Invert Elevation (ft) Max (Rim) Elevation (ft) Max (Rim) Offset (ft) Initial Water Elevation (ft) Initial Water Depth (ft) Ponded Area (ftp) Evaporation Loss . Storage Area Volume Curves Storage Curve SAND -FILTER Stage (ft) Storage Area (ft') Storage Volume (ft') 0 512 0 000 1 512 512.00 2 512 102400 3 512 153600 4 512 204800 44 512 225280 45 001 227840 5 001 227841 10 001 227846 298050 299050 1000 298050 000 000 000 Pipe Results SN Element Peak Time of Design Flow Peak Flow/ Peak Flow Travel Peak Flow Peak Flow Total Time Froude Reported ID Flow Peak Flow Capacity Design Flaw Velocity Time Depth Depth/ Surcharged Number Condition Occurrence Ratio Total Depth Ratio (cfs) (days hh mm) (cfs) (ft/sec) (min) (ft) (min) 1 SAND -FILTER -OUTLET 007 0 0601 1565 000 406 016 005 004 000 Calculated 2 SITE -TO -OUTFALL 007 0 0602 13330 000 5.60 0.71 004 002 000 Calculated Flap No of Gate Barrels No 1 No 1 Pipe Input SN Element Length Inlet Inlet Outlet Outlet Total Average Pipe Pipe Pipe Manning's Entrance Exit/Bend Additional Initial ID Invert Invert Invert Invert Drop Slope Shape Diameter or Width Roughness Losses Losses Losses Flow Elevation Offset Elevation Offset Height (ft) (ft) (ft) (ft) (ft) (ft) N (in) (in) (cfs) 1 SAND -FILTER -OUTLET 40 00 297800 000 297600 000 200 50000 CIRCULAR 15 000 15 000 00120 05000 05000 00000 000 2 SITE -TO -OUTFALL 24000 297600 000 290500 0.00 71.00 295800 CIRCULAR 24 000 24 000 00120 05000 05000 00000 000 Junction Results SN Element Peak Peak Max HGL Max HGL Max Min Average HGL Average HGL Time of Time of Total Total Time ID Inflow Lateral Elevation Depth Surcharge Freeboard Elevation Depth Max HGL Peak Flooded Flooded Inflow Attained Attained Depth Attained Attained Attained Occurrence Flooding Volume Attained Occurrence (cfs) (cfs) (ft) (ft) (ft) (ft) (ft) (ft) (days hh mm) (days hh mm) (ac -in) (min) 1 SAND -FILTER -OUTLET 0 07 000 297807 007 000 693 297803 003 0 0601 0 0000 000 000 2 SITE -OUTLET 007 000 297604 004 000 9.96 297602 002 0 06.02 0 0000 000 000 Junction Input SN Element Invert Ground/Rim Ground/Rim Initial Initial Surcharge Surcharge Ponded Minimum ID Elevation (Max) (Max) Water Water Elevation Depth Area Pipe Elevation Offset Elevation Depth Cover (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft') (in) 1 SAND -FILTER -OUTLET 297800 298500 700 297800 000 000 -298500 000 000 2 SITE -OUTLET 297600 298500 900 297600 000 000 -298500 000 000 Runoff (cfs) 0000 N N N N W W W W A A A N A O O > N ? m m N N A m O W N A m O A N A T O N O cn NJ PO 3 Ln m 3 v O En 0 M 0 0 IT 'o 3 Rainfall (in/hr) O O O O O O O O O N N N N W A Lh Q7 V OD (O N W A IT O7 V m W N -+ N W O m w v O C" 0 I i i I I I I 1 I i I l I I I I i l l V 11 I I I i I I I 11 j I I{ I I I I I I I I I I I I iI I I i , I I I i II I I I I — il! III ! I ! I I M 0 0 IT 'o 3 Rainfall (in/hr) O O O O O O O O O N N N N W A Lh Q7 V OD (O N W A IT O7 V m W N -+ N W O m w v O C" 0 I i i I I I I 1 I i I l I I I I i l l V 11 I I I i I I I 11 j I I{ I I I I I I I I I i , O Subbasin Hydrology Subbasin : Sub -01 Input Data Area (ac) 206 Weighted Curve Number 9957 Rain Gage ID FLEETWOOD Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 206 - 9957 Composite Area & Weighted CN 206 9957 Subbasin Runoff Results Total Rainfall (in) 1 00 Total Runoff (in) 095 Peak Runoff (cfs) 429 Weighted Curve Number 9957 Time of Concentration (days hh mm ss) 0 00 05 00 Peak Flow Total Time Reported De# Surcharged Condition Total Depth Ratio (min) 004 0.00 Calculated 0.02 000 Calculated Link Summary SN Element Element From To (Outlet) ID Type (Inlet) Node Node Length Inlet Outlet Average Diameter or Manning's Peak Design Flow Peak Flow/ Peak Flow Peak'Flow Inved Invert Slope Height Roughness Flow Capacity Design Flow Velocity Depth Elevation Elevation Ratio A (ft) A N (in) (cfs) (cfs) (fvsec) IT 1 SAND -FILTER -OUTLET Pipe SAND -FILTER -OUTLET SITE -OUTLET 40.00 297800 297600 50000 15 000 00120 007 1565 000 406 005 2 SITE -TO -OUTFALL Pipe SITE -OUTLET OUTFALL 240.00 2976.00 2905.00 29.5800 24.000 0.0120 007 13330 000 560 004 3 SEDIMENT -CHAMBER -TO -SAND -FILTER Odfice SEDIMENT -CHAMBER -UST SAND -FILTER 2981.00 298050 12000 088 4FILTER-MEDIA Outlet SAND -FILTER SAND -FILTER -OUTLET 2980.50 2978.00 007 5 BYPASS -OVERFLOW Weir SEDIMENT -CHAMBER -UST SITE -OUTLET 298100 297600 0.00 Total Time Flooded min 000 000 000 000 Node Summary SN Element Element Invert Ground/Rim Initial Surcharge Ponded Peak Max HGL Max Min Time of Total ID Type Elevation (Max) Water Elevation Area Inflow Elevation Surcharge Freeboard Peak Flooded Elevation Elevation Attained Depth Attained Flooding Volume Attained Occurrence (ft) (ft) (ft) (ft) (ft') (cfs) (ft) (ft) (ft) (days hh mm) (ac -in) 1 SAND -FILTER -OUTLET Junction 297800 298500 297800 000 000 0.07 297807 000 693 0 0000 000 2 SITE -OUTLET Junction 297600 298500 297600 000 000 007 297604 000 996 0 0000 000 3 OUTFALL Outfall 290500 007 290504 4 SAND -FILTER Storage Node 298050 299050 298050 000 088 298353 000 5 SEDIMENT -CHAMBER -UST Storage Node 2981 00 2991 00 2981 00 000 429 298353 000 Subbasin Summary SN Subbasin Area Weighted Total Total Total Peak Time of ID Curve Rainfall Runoff Runoff Runoff Concentration Number Volume (ac) (in) (in) (ac -in) (cfs) (days hh mm ss) 1 Sub -01 206 9957 1 00 095 1 95 429 0 00 05 00 Project Description File Name. Project Options Flow Units Elevation Type ... Hydrology Method Time of Concentration (TOC) Method Link Routing Method Enable Overflow Ponding at Nodes Skip Steady State Analysis Time Periods . Analysis Options Start Analysis On End Analysis On Start Reporting On Antecedent Dry Days Runoff (Dry Weather) Time Step . Runoff (Wet Weather) Time Step . ........ Reporting Time Step Routing Time Step Number of Elements Rain Gages Subbasins Nodes Junctions Outfalls Flow Diversions . . Inlets Storage Nodes. . Links Channels . . Pipes . Pumps. Orifices .... Weirs Outlets Pollutants Land Uses Rainfall Details POST -CON -ROUTING -BALANCED SPF CFS Elevation SCS TR -55 User -Defined Hydrodynamic YES YES Sep 07, 2017 00.0000 Sep 10, 2017 00 00 00 Sep 07, 2017 00 00 00 0 days 0 01.00 00 days hh mm ss 0 00 05 00 days hh mm ss 0 00 00 05 days hh mm ss 5 seconds Qty - 1 1 5 2 1 0 0 2 5 0 2 0 SN Rain Gage Data Data Source Rainfall Rain State County Return Rainfall Rainfall ID Source ID Type Units Period Depth Distribution (years) (inches) 1 FLEETWOOD Time Series FIRST -FLUSH Cumulative inches 000 1 0 0 SN Rain Gage Data Data Source Rainfall Rain State County Return Rainfall Rainfall ID Source ID Type Units Period Depth Distribution (years) (inches) 1 FLEETWOOD Time Series FIRST -FLUSH Cumulative inches 000 First Flush (1") BREC, P.A. Fleetwood Fire Department I Stormwater Calculations Post -construction Routing BREC, P.A. Fleetwood Fire Department I Stormwater Calculations Subbasin - Sub -01 4.6 44- 42 4- 38 36 34 32 3 28 26- .S 24- Z 22- .9 M 2 - It 18 16 14 12 1 08 06 04- 02 Rainfall Intensity Graph 0 5 1 . 0 15 20 2 . 5 3 . 0 35 46 45 50 55 60 65 70 Time (hrs) 44 42 4 38 36 34 32 3 28 26- 24- tt= 22- 2- 1 16- 1.4- 1.2 1 08 06 0.4 02 Runoff Hydrograph ---- I------ I � ---- -- �--i -7 J- J -- F-7 -I--- j I itJ- � L- -J 1 -1 0 5 1 . 0 15 20 2 . 5 3 . 0 35 46 45 50 55 60 65 70 Time (hrs) 44 42 4 38 36 34 32 3 28 26- 24- tt= 22- 2- 1 16- 1.4- 1.2 1 08 06 0.4 02 Runoff Hydrograph ---- I------ I � I �--i --i I- I itJ- � LA --- L-1 ---- _ -- I ---- �- ---- - --- -- -- - ----� - -_ -- 0 5 10 15 20 2 30 35 40 45 60 55 so 65 70 Time (hrs) *Subbasin Hydrology Subbasin : Sub -01 Input Data Area (ac) 206 Weighted Curve Number 7759 Rain Gage ID FLEETWOOD Composite Curve Number Area Sod Curve Soil/Surface Description (acres) Group Number 206 - 7759 Composite Area & Weighted CN 206 7759 Subbasin Runoff Results Total Rainfall (in) 325 Total Runoff (in) 128 Peak Runoff (cfs) 416 Weighted Curve Number 7759 Time of Concentration (days hh mm ss) .. 0 00 05 00 Node Summary SN Element Element Invert Ground/Rim Initial Surcharge Ponded Peak Max HGL Max Min Time of Total Total Time ID Type Elevation (Max) Water Elevation Area Inflow Elevation Surcharge Freeboard Peak Flooded Flooded Elevation Elevation Attained Depth Attained Flooding Volume Attained Occurrence (ft) (ft) (ft) (ft) (ft') (cfs) (ft) (ft) (ft) (days hh mm) (ac -in) (min) 1 OUTFALL Outfall 290500 000 000 Subbasin Summary SN Subbasin Area Weighted Total Total Total Peak Time of ID Curve Rainfall Runoff Runoff Runoff Concentration Number Volume (ac) (in) (in) (ac -in) (cfs) (days hh.mm ss) 1 Sub -01 2.06 7759 325 1 28 265 416 0 00 05 00 Project Description File Name PRE -CON -ROUTING SPF Project Options Flow Units CFS Elevation Type Elevation Hydrology Method SCS TR -55 Time of Concentration (TOC) Method User -Defined Link Routing Method Hydrodynamic Enable Overflow Ponding at Nodes YES Skip Steady State Analysis Time Periods YES Analysis Options Start Analysis On . . . Sep 07, 2017 00 00 00 End Analysis On Sep 10, 2017 00 00 00 Start Reporting On Sep 07, 2017 00 00 00 Antecedent Dry Days 0 days Runoff (Dry Weather) Time Step 001 0000 days hh mm ss Runoff (Wet Weather) Time Step 0 00 05 00 days hh mm ss Reporting Time Step 0 00 00 05 days hh mm ss Routing Time Step 5 seconds Number of Elements Qty Rain Gages 1 Subbasins 1 Nodes 1 Junctions ... .... 0 Outfalls .. 1 Flow Diversions 0 Inlets ...... 0 Storage Nodes .... 0 Links 0 Channels 0 Pipes... .. ...... ... 0 Pumps 0 Orifices 0 Weirs 0 Outlets .... 0 Pollutants 0 Land Uses 0 Rainfall Details SN Rain Gage Data Data Source Rainfall Rain State County Return Rainfall Rainfall ID Source ID Type Units Period Depth Distribution (years) (inches) 1 FLEETWOOD Time Series 1YR-24HR Cumulative inches North Carolina Rowan 1 325 SCS Type II 24 -hr 1 year, 24 hour Routing BREC, P.A. Fleetwood Fire Department I Stormwater Calculations Pre -construction Routing BREC, P.A. Fleetwood Fire Department I Stormwater Calculations Appendix BREC, P.A. Fleetwood Fire Department I Stormwater Calculations (`4SProvided +`4fProvided) 'xhMaxFilter — (2.912)(3.5) = 10,192 ft3 > WQVadj 3.0 Results The pre- and post -construction peak runoff rates at each pre -construction outfall are summarized below for the storms requiring peak attenuation. Table 4 - Peak Runoff Rates for PRE-CONSTRUCTIONI (ft 3 f t3 STORM PRE — CON — POST — CON — s s 1 year, 24 hour 4.16 3.59 Model outputs from SSA are included in the Appendix for verification. BREC, P.A. Fleetwood Fire Department I Stormwater Calculations 4 Routing of the required storms through the sand filters was performed using Autodesk Storm and Sanitary Analysis (SSA) 2015. 2.1 Sand Filter Calculations The standard and adjusted water quality volumes are calculated as follows: WQV = 7,095 f t3 WQVadj = 0.75WQV = (0.75)(7,095) = 5,325 f t3 There are multiple Af and AS size combinations that provide a working solution to the design requirements for the calculated water quality volume. Possible options are summarized in the table below. Table 3 - Sand Filter Sizina hMaxFilter (f t) hA (f t) AS +A f (f t2) 1.0 0.5 5,325 2.0 1.0 2,663 3.0 1.5 1,775 4.0 2.0 1,331 Given the site constraints, hMaxFilter was selected as 3.5 ft in order to accommodate a reasonable sized pre -cast tank. This selection yields the following calculations. hMaxFilter = 3.5 f t hA— hMaxFilter = 3_5 = 1.75 f t 2 2 t k=4 day t = 1.66 days dF = 1.5 f t A _ (WQV) (dF) _ (7,095)(1-5) = 494 f t2 Af Min—Required (k) (t) (hA + dF) (4) (1.66) (1.75 + 1.5) ) AsMin-Required= 0.066WQV = 0.066(7,095) = 469 f t2 _ Af Provided 512 f t2 % Af Min—Required _ AsProvided 2,400 f t2 % AsMin—Required (AsProvided + Af Provided) = 2,400 + 512 = 2,912 f t2 BREC, P.A. Fleetwood Fire Department I Stormwater Calculations 3 1.0 General Information This document contains stormwater calculations demonstrating compliance with state stormwater regulations for the construction of a 14,800 ft2 fire department and associated parking areas in Fleetwood, NC. Specifically, regulations for this area require water quality treatment of the first flush (1") storm and the attenuation of the 1 year, 24 hour storm to pre -construction discharge rates. A below ground sand filter will be utilized to meet these requirements. 2.0 Methodology The water quality volume (WQ„) required to be treated from the first flush was calculated using the Schueler method outlined in the NCDENR Stormwater BMP Manual. The Schueler method utilizes the following equations: R„=0.05+0.91A WQV = 3630RDR,A Where IA is the impervious fraction of the drainage area, R„ is a runoff coefficient, RD is the rainfall depth, A is the drainage area, and WQ„ is the runoff volume. The calculated WQU is 7,095 f0. To route the WQ„ through the sand filter, it is necessary to calculate a modified SCS curve number to avoid underrepresenting the first flush. The modified curve number is calculated as follows: CNm = 1000/ [10 + 5RD + 10WQ„ — 10 WQv + 1.25WQ„RD The modified curve numbers were used to route the first flush using an SCS 6 hour balanced storm distribution. The 1 year, 24 hour and larger storms were routed with standard curve numbers and an SCS type II 24 hour storm distribution. One pre -construction drainage area and one post -construction drainage areas were identified. Table 1 - Pre -Construction Drainaae Area(s) Name Area acres CN CN„, Tc minutes PRE-CONSTRUCTIONA 2.061 77.59 N/A 1 5 Table 2 - Post -Construction Drainaae Area(s) Name Area (ac) CN CNm TC (min) R„ WQV ( t3) POST-CONSTRUCTIONA 2.06 98.00 99.57 5 0.95 7,095 BREC, P.A. Fleetwood Fire Department I Stormwater Calculations 2 FLEETWOOD FIRE DEPARTMENT STORMWATER CALCULATIONS Prepared By: Prepared For: Project Site: BREC, P.A. Fleetwood Fire Department US Hwy 221 126 Executive Drive 9005 US Hwy 221 Fleetwood, NC 28626 Suite 220 Fleetwood, NC 28626 Wilkesboro, NC 28697 NCBELS Firm #C-3448 8 September 2017 CARO '�.. 0'Essi' .. SEAL = = 035736 - /'• v� `� Justin Church, PE /NC, CN �` Principal Engineer BREC, P.A. 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Yes #7 If applicable, with the SCM be cleaned out after construction? Yes #2 Is the SCM located on or near contaminated soils? No #8 Does the mametenance access comply with General MDC (8)? Yes #3 What are the side slopes of the SCM (H V)? N/A #9 Does the drainage easement comply with General MDC (9)? Yes #3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No #10 If the SCM is on a single family lot, does the plat comply with General MDC (10)? Yes #4 Are the inlets, outlets, and receiving stream protected from erosion (10 -year storm)? Yes #11 Is there an O&M Agreement that complies with General MDC (11)? Yes #5 Is there a a bypass for flows in excess of the design flow? Yes #12 Is there an O&M Plan that complies with General MDC (12)? Yes #6 What is the method for dewatering the SCM for maintenance? Drawdown Orifice 1#13 Was the SCM designed by an NC licensed professional? Yes SAND FILTER MDC FROM 02H.1056 #1 SHWT elevation (fmsl) 2904 ft #3 Volume of stormwater from drainage area during design storm (cubic feet) 22572 cf #1 Type of sand filter (open or closed) Closed #3 Total volume that can be stored above the sediment and sand chambers (cubic feet) 13500 cf' #1 If closed, describe if the filter will be pre -cast or pour -in-place #3 Is this sand filter designed to attenuate peak flows? Yes Precast #3 Elevation of the bypass device (fmsl) 2985 5 ft #1 If closed, top of grate elevation (fmsl) 2985 ft #3 Describe the bypass device #2 Volume that can be retained in the sediment chamber (cubic feet) #2 Will there be a permanent pool in the sediment chamber? 11250 cf No Flow splitter with bypass pipe.. ' #2 Bottom of the sediment chamber (fmsl) 2981 ft #4 Ponding depth from the top of the sand to the bypass device (ft) 4 4 ft #2 Area of the sediment chamber (square feet) 2400 sf #5 Describe the mechanism for distributing flow over the sand surface #2 Physical depth of the sediment chamber (inches) 60 in Flow is distributed to sand filter chambers with,a pipe manifold #2 Ponding depth in the sediment chamber, above any permanent pool (inches) 60 in #6 Sand specification for sand chamber #2 Elevation of top of weir between chambers (fmsl) #2 Volume that can be retained in the sand chamber (cubic feet) 2985 5 ft 2250 cf ASTM C33 #2 Bottom of the sand chamber (fmsl) 2978 ft, #7 Depth above underdram pipe (inches) 12 in #2 Area of the sand chamber (square feet) 512 sf #8 Will the media be maintained to drain at least two inches per hour at the sand surface? Yes #2 Physical depth of the sand chamber (inches) 83 in 1#9 Is at least one clean-out pipe provided at the low point of each underdrain line? Yes #2 Ponding depth in the sand chamber, above any permanent pool (inches) 52 in #9 Will clean-out pipes be capped? Yes ADDITIONAL INFORMATION Please use this space to prowde any additional information about this sand filter that you think is relevant to the review ' Underground, sand,filter is designed using 72" pipe as the underground storage for the sediment chamber and for peak attenuation and pre -cast concrete pump tanks for the sand filter The total required sand filter area is distnbuted across four tanks which are connected at the inlet and outlet with a pipe manifold. Sand Filter 2 10:47 AM 9/8/2017 SUPPLEMENT -EZ FORM COVER PAGE Please indicate the types, quantities and locations of SCMs that will be used on this project Quantity Location(s) Infiltration System _ Bioretention Cell Wet Pond— Stormwater Wetland Permeable Pavement Sand Filter 1 _ Rainwater Harvesting_ { Green Roof Level Spreader -Filter Strip Disconnected Impervious Surface Treatment Swale Dry Pond Designer information for this project: Name and Title. Justin Church, PE - Principal Engineer Organization: BREC, PA Street address, 126 Executive Drive; Suite 220 City, State, Zip Wilkesboro, NC 28697 Phone number(s) 336 844 4088 Email. Tustin@brec biz Designer �ot. Ess/p 9 '9 ago SEAL � 035736 v . FiyGINE� ' G rrrrlllll�� Seal _LZ5, Date Applicant: tim Fnvlronu�er puubry Project Name: Fleetwood Fire Department Address 8996 Hwy 221 South City / Town Fleetwood, NC 28626 Company: Fleetwood Volunteer Fire Department, Inc. Contact Nelson James Mailing Address PO Box 280 City, State, Zip Fleetwood, NC 28626 Phone number(s) 336-977-0040 Email: cprmter@skybest com Certification Statement - I certify, under penalty of law that this Supplement -EZ form and all supporting information were prepared under my direction or supervision, - that the information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete, and - that the engineering plans, specifications, operation and maintenance agreements and other supporting information are consistent with the information provided here I am aware that there are significant penalties for submitting false information including the possibility of fines and imprisonment for knowing violations as well as a report being made to my professional board Cover Page 1 10.56 AM 9/8/2017 Sod Map—Ashe County, North Carolina Map Unit Legend FLEETWOOD FIRE AND RESCUE WASTE SITE - SOIL MAP Ashe County, North Carolina (NC009) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI CaF Chandler loam, 25 to 65 percent slopes 487 478% Cc Colvard fine sandy loam 26 25% FnD Fannin loam, 8 to 15 percent slopes 2.2 22% WaE Watauga loam, 15 to 25 percent slopes 433 426% WaF Watauga loam, 25 to 45 percent slopes 50 49% Totals for Area of Interest 101.7 100.0% USDA, Natural Resources Web Soil Survey 8/17/2017 Conservation Service National Cooperative Soil Survey Page 3 of 3 Soil Map—Ashe County, North Carolina (FLEETWOOD FIRE AND RESCUE WASTE SITE - SOIL MAP) MAP LEGEND Area of Interest (AOI) Spoil Area Area of Interest (AOI) Solis O Soil Map Unit Polygons ,qdn Sod Map Unit Lines Soil Map Unit Points Special Point Features qjp Blowout N Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot ,• Landfill Lava Flow Marsh or swamp Mine or Quarry a Miscellaneous Water Perennial Water cup Rock Outcrop + Saline Spot measurements. Sandy Spot ,gg5 Severely Eroded Spot ++4 Sinkhole Source of Map. Natural Resources Conservation Service Slide or Slip ,o Sodic Spot MAP INFORMATION USDA Natural Resources Web Soil Survey 8/17/2017 Conservation Service National Cooperative Soil Survey Page 2 of 3 Spoil Area The soil surveys that comprise your AOI were mapped at 1:24,000 Stony Spot Very Stony Spot Warning Sod Map may not be valid at this scale. Wet Spot Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil Other line placement The maps do not show the small areas of ,• Special Line Features contrasting soils that could have been shown at a more detailed scale. Water Features Streams and Canals Please rely on the bar scale on each map sheet for map measurements. Transportation ++4 Rails Source of Map. Natural Resources Conservation Service Web Sod Survey URL: �e Interstate Highways Coordinate System- Web Mercator (EPSG 3857) US Routes Maps from the Web Sod Survey are based on the Web Mercator ---n Major Roads protection, which preserves direction and shape but distorts distance and area. A protection that preserves area, such as the Local Roads Albers equal-area conic protection, should be used if more accurate calculations of distance or area are required Background ® Aerial Photography This product is generated from the USDA-NRCS certified data as of the version date(s) listed below Sod Survey Area- Ashe County, North Carolina Survey Area Data Version 13, Sep 19, 2016 Sod map units are labeled (as space allows) for map scales 1 50,000 or larger Date(s) aerial images were photographed May 30, 2012—Mar 15, 2017 The orthophoto or other base map on which the sod lines were compiled and digitized probably differs from the background imagery displayed on these maps As a result, some minor shifting of map unit boundaries may be evident USDA Natural Resources Web Soil Survey 8/17/2017 Conservation Service National Cooperative Soil Survey Page 2 of 3 36° 1945'N 36° 18' 22"N 3 Soil Map—Ashe County, North Carolina 3 (FLEETWOOD FIRE AND RESCUE WASTE SITE - SOIL MAP) m m 453700 453800 453900 454000 454100 454200 454300 3 Map Scale: 1:4,970 if printed on A landscape (11" x 8.5') sheet " Meters �o NN 0 50 100 200Feet 300 /V 0 200 400 800 1200 Map prgedton: Web Meng Comer coordinates: WGS84 Edge h6: UTM Zone 17N WGS84 USDA Natural Resources Web Soil Survey WIM Conservation Service National Cooperative Soil Survey 454400 4545M 454600 454700 A i 36° 18' 4S N �O 8 36° 18' 22"N 3 M w 8/17/2017 Page 1 of 3 9/8/2017 Click Here To: View Document Filings Corporate Names Business Registration Division North Carolina Elaine F Marshall DEPAR MEET OF THE Secretary SECRE"T"ARY O>✓ STATE PO Box 28622 Raleigh,HC 27626-0622 (919)814-5400 Legal: Fleetwood Volunteer Fire and Rescue Department,lnc. Prev Legal: Fleetwood Volunteer Fire Department, Inc. Non -Profit Corporation Information Sosld: 0053488 Status: Current -Active Annual Report Status: Not Applicable Citizenship: Domestic Date Formed: 6/10/1976 Registered Agent: Nelson, James Corporate Addresses Reg Office: Box 55 Fleetwood, NC 00000 Reg Mailing: Box 55 Fleetwood, NC 00000 Account Login Create .Site Account https://www.sosnc.gov/Search/profcorp/4858450 1/1 _ Saeid Filter Ma ntenariae Requirements : Important maintenance procedures: - The drainage area will be carefully managed to reduce the sediment load to the sand filter. - The sedimentation chamber or forebay will be cleaned out whenever sediment depth exceeds six inches. - Once a year, sand media will be skimmed. - The sand filter media will be replaced whenever it fails to function properly after maintenance. The sand filter shall be inspected quarterly and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem: How to remediate the problem: Entire BMP Trash/debris is present. Remove the trash/debris Adjacent pavement (if Sediment is present on the Sweep or vacuum the sediment as soon as possible applicable) pavement surface. Perimeter of sand filter Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then plant a erosive gullies have formed. ground cover and water until it is established. Provide lime and a one- time fertilizer application. Vegetation is too short or too Maintain vegetation at an appropriate height. long. Flow diversion structure The structure is clogged. Unclog the conveyance and dispose of any sediment offsite. The structure is damaged. Make any necessary repairs or replace if damage is too large for repair. The inlet device The pipe is clogged. Unclog the pipe. Dispose of the sediment off-site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to smooth it over and provide erosion swale. control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and replace with clean stone. covered in sediment (if applicable), Forebay or pretreatment Sediment has accumulated to Search for the source of the sediment and remedy the problem if area a depth of greater than six inches. possible. Remove the sediment and stabilize or dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf malting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand, if a pesticide is used, wipe it on the plants rather than spraying. Filter bed and underdrain Water is ponding on the Check to see if the collector system is clogged and flush if necessary. collection system surface for more than 24 If water still ponds, remove the top few inches of filter bed media and hours after a storm. replace. If water still ponds, then consult an expert. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural damage have occurred at the Resources Regional Office. outlet. STORM -EZ 9/8/2017 Version 1.4 O&M Manual Page 3 of 3 t =�peratioti :& =Maintenance p �4g`reerri�t;,. ' Project Name: Project Location: Fleetwood Volunteer Fire Department 8996 Hwy 221 S -Fleetwood, NC 28626 _-_ cover'Page - Maintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired, or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the BMP(s). The BMP(s) on this project include (check all that apply & correspe Bioretention Cell Quantity: Dry Detention Basin Quantity: Grassed Swale Quantity: Green Roof Quantity: Infiltration Basin Quantity: Infiltration Trench Quantity: Level SpreaderNFS Quantity: Permeable Pavement Quantity: Proprietary System Quantity: Rainwater Harvesting Quantity: Sand Filter Quantity: 1 Stormwater Wetland Quantity: Wet Detention Basin Quantity: 0 Disconnected Impervious Area Present: No User Defined BMP Present: No O&M tables will Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): ne aaaea I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any changes to the system or responsible party. * Responsible Party: Title & Organization: Street address. City, state, zip: Phone number(s): Email: Bartt Winebarger Chairman of Board - Fleetwood Vol. Fire Department PO Box 280 Fleetwood, NC 28626 336-977-0040 cprinter@sk best.com Signature: t�4Jt.�7-C�� Date: � Cii f v �► , a Notary Public for the State of AIC County of As hp-_ , do hearby certify that %2cE ,4 E .1 i Ae u e ,h - personally appeared before me this day of Se / y and acknowledge the due execution of the O ra ions nd Main nance A r ment . Witness myJ,Ar}Jl and official seal, c. 101 J. G �S, 71, U 1B cc Coo �Z My commission expires �/ 9/8/201 i 4 Uik 1 ibtaTludl- Page 1 of