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HomeMy WebLinkAboutStudies APPLICANT 12/29/2022Goebel Engineering & Surveying, Inc. Engineering Surveying Land Planning Services 236MB6 ler Road Elmim, OR 9]43] Phone: W-68705 2 E-mail: aoebelAgoebelem corn Stormwater Report FOR 835 Anderson Lane Tentative Partition Tax Lot 600 Map 17-03-33-11 Presumptive Approach Through Soakage Trench EXPIRES: 6/30/2023 Prepared for The City of Sprinfgield December 2022 INDIVIDUAL PARCEL TREATMENT 835 ANDERSON LANE PARCELS Prepared by GOEBEL ENGINEERING & SURVEYING Printed 1212112022 HYdroCAD® 9.10 s!n 04646 02010 HydroCAD Software Solutions LLC Paae 1 Area Listing (alt nodes) Area CN Description (sq -ft) (subcatchment-numbers) 840 98 Roofs, HSG C (PARCEL 2 -ROOF) 3,128 98 Roofs, impervious HSG C (PARCEL 1-3 IMPROVED) 3,968 98 TOTAL AREA 835 ANDERSON LANE PARCELS Type IA 24 -hr 5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n 04646 02010 HvdroCAD Software Solutions LLC Pace 2 Time span=0.00-25.00 hrs, dt=0.10 hrs, 251 points Runoff by S13UH method, Split Perviousllmperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment PARCEL I-3 IMPROVED: Runoff Area=3,128 sf 100.00%Impervious Runoff Depth>3.37" Tc=15.0 min CN=0/98 Runoff=0.05 cfs 877 cf Subcatchment PARCEL 2 -ROOF: PARCEL Runoff Area=840sf 100.00%Impervious Runoff Depth>3.37" Tc=15.Omin CN --0198 Runoff=0.01 cfs 236cf Pond PARCEL 2: SOAKAGE TRENCH Peak Elev=434.12' Storage=59 cf Inflow=0.01 cis 236 cf Outflow=0.00 cfs 226 cf Pond PARCELS 1.3: SOAKAGE TRENCH Peak Elev=433.84' Storage=210 cf Inflow=0.05 cfs 877 cf Outflow=0.01 cfs 852 cf Total Runoff Area= 3,968 sf Runoff Volume =1,113 cf Average Runoff Depth= 3.3T' 0.00% Pervious = 0 sf 100.00% Impervious = 3,968 sf 835 ANDERSON LANE PARCELS Type IA 24-hr5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD®9 10 s/n 04646 02010 HydroCAD Software Solutions LLC Pace 3 Summary for Subcatchment PARCEL 1-3 IMPROVED: PARCEL 1 & 3IMPROVED Runoff = 0.05 cfs @ 8.01 him, Volume= 877 cf, Depth> 3.37' Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Type IA 24 -hr 5 YEAR Rainfall=3.60" 3,128 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description in) (feet) (ft/ft) (ft/sec) (cfs) Direct Entry, 5 Subcatchment PARCEL 1-3 IMPROVED: PARCEL 1 & 3IMPROVED Hydmgreph o.osfi 0 7 1 oe6 r'pe- lid-24',,hx 5 YEAR eoa6 1--+-Rajnfal,l=3:Cp0" e04 , AunoffAq'?ar$,1128 s�fi _ o.e6s Ru'ngffVOlurne=877 eF Runoff Depth>3.37" LL 062 "C=15.0 min 0.01 1 12 13 14 15 16 Time (6e0rel 835 ANDERSON LANE PARCELS Type IA 24-hr5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD®9 10 s/n 04646 @2010 HVdroCAD Software Solutions LLC Paas 4 Summary for Subcatchment PARCEL 2 -ROOF: PARCEL 2 EXISTING Runoff = 0.01 cfs @ 8.01 hrs, Volume= 236 cf, Depth> 3.37' Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Type IA 24 -hr 5 YEAR Rainfall=3.60" Area (sf) CN Description 840 98 Roofs, HSG C 840 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description 15.0 Subcatchment PARCEL 2 -ROOF: PARCEL 2 EXISTING Hydrogmph ■ RunoR 835 ANDERSON LANE PARCELS Type IA 24 -hr 5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD& 9.10 s/n 04646 @2010 HvdroCAD Software Solutions LLC Pane 5 Summary for Pond PARCEL 2: SOAKAGE TRENCH Inflow Area = 840 sf,100.00% Impervious, Inflow Depth > 3.37" for 5 YEAR event Inflow = 0.01 cfs @ 8.01 hrs, Volume= 236 of Outflow = 0.00 cfs @ 10.02 hrs, Volume= 226 of, Atten= 74%, Lag= 120.7 min Discarded = 0.00 cfs @ 10.02 hrs, Volume= 226 of Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Peak Eley=434.12' @ 10.02 hrs Surf.Area=130 sf Storage=59 cf Plug -Flow detention time= 182.8 min calculated for 226 of (96% of inflow) Center -of -Mass det. time= 152.3 min ( 827.0 - 674.7 ) Volume Invert Avail.Storage Storage Description #1 432.00' 171 of 4.00'W x 11.60'L x 4.00'H TRENCH Z=1.0 - _ Jn-flbW ArEa=8Q-!sf- 517 of Overall x 33.0% Voids #2 434.70' 1 of 4:0" D x 11.6'L 4" PERF PIPE 0.013 172 of Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 432.00' 1.260 in/hr Exfiltration over Surface area Qlscarded OutFlow Max=0.00 cfs @ 10.02 hrs HW=434.12' (Free Discharge) T—i.—ExOltration (Exfiltration Controls 0.00 cfs) Pond PARCEL 2: SOAKAGE TRENCH TO M1m°w F DisceMetl 0.018 0.01 cfs - _ Jn-flbW ArEa=8Q-!sf- 0.014 1 0.013 r w+1 A Peak-Iev=�la7.-1 2+ 0012 -r --� -T- - 0.011 - - - StorAgle�9_'0-- 0D1 -r--__,- 0.008 G OWE. 000 8 - - - 0005 _ 0.00 cfs 0 0D4- 0.003- 0,002 0 001 D p 1 2 3 4 5 B ] 8 9 10 11 1 13 14 16 18 V 18 19 20 21 22 23 24 25 Time (M1ouB) 835 ANDERSON LANE PARCELS Type IA 24-hr5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n 04646 © 2010 HydroCAD Software Solutions LLC Pane 6 Summary for Pond PARCELS 13: SOAKAGE TRENCH Inflow Area = 3,128 sf,100.00% Impervious, Inflow Depth > 3.37" for 5 YEAR event Inflow = 0.05 cfs @ 8.01 hrs, Volume= 877 cf Outflow = 0.01 cfs @ 10.78 hrs, Volume= 852 of, Atten= 77%, Lag= 166.1 min Discarded = 0.01 cfs @ 10.78 hrs, Volume= 852 cf Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Peak Elev= 433.84' Q 10.78 hrs Surt.Area= 421 sf Storage= 210 cf Plug -Flow detention time= 178.3 min calculated for 852 cf (97% of inflow) Center -of -Mass det. time= 155.8 min ( 830.5 - 674.7 ) Volume Invert Avail.Storage Storage Description #1 432.00' 581 cf 11.00'W x 25.00'L x 4.00'H TRENCH Z=1.0 1,761 of Overall x 33.0% Voids #2 434.50' 10 cf 6.0" D x 50.0'L 6" PERF PIPE 591 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 432.00' 1.260 in/hr Exfiltration over Surface area p)scarded Outflow Max=0.01 cfs @ 10.78 hrs HW=433.84' (Free Discharge) T-1=Exfiltration (EAltration Controls 0.01 cfs) Pond PARCELS 1-3: SOAKAGE TRENCH Hydrograph �w 0.03- °' 0.025 -- D.02- 0015- am C 005- 10.05cfftsliriflowAre; IN nisprded=3;11281 sf Peak Et4v=43;.W Sforage=3, did Time (hours) 835 ANDERSON LANE PARCELS Type IA 24 -hr 25 YEAR Rainfall=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n 04646 02010 HydroCAD Software Solutions LLC Pace 7 Time span=0.00-25.00 hrs, dt=0.10 hrs, 251 points Runoff by SBUH method, Split Pendous/Imperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmentPARCEL 1-3 IMPROVED: Runoff Area=3,128 sf 100.00%Impervious Runoff Depth>5.04" Tc=15.0 min CN=0/98 Runoff=0.08 cfs 1,314 cf SubcatchmentPARCEL 2 -ROOF: PARCEL Runoff Area=840 sf 100.00%Impervious Runoff Depth>5.04" Tc=15.0 min OWW98 Runoff=0:02 cfs 353 cf Pond PARCEL 2: SOAKAGE TRENCH Peak Elev=434.98' Storage=103 cf Inflow=0.02 cfs 353 cf Ouff ow=0.01 cfs 318 cf Pond PARCELS 1-3: SOAKAGE TRENCH Peak Elev=435.00' Storage=402 cf Inflow=0.08 cfs 1,314 cf Outflow=0.02 cfs 1,117 cf Total Runoff Area= 3,968 sf Runoff Volume= 1;667 cf Average Runoff Depth = 5.04" 0.00% Pervious = 0 sf 100.00% Impervious = 3,968 sf 835 ANDERSON LANE PARCELS Type IA 24 -hr 25 YEAR Rainfall=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n G4646 © 2010 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment PARCEL 1-3 IMPROVED: PARCEL 1 & 3 IMPROVED Runoff = 0.08 cis @ 8.01 hrs, Volume= 1,314 cf, Depth> 5.04" Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Type IA 24 -hr 25 YEAR Rainfall=5.28" ' 3,128 98 Roots, impervious H5G C 3,128 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (tuft) (fusec) (cfs) Direct Entry, 5 Subcatchment PARCEL 1-3 IMPROVED: PARCEL 1 & 3 IMPROVED 0.08 cfs o"o ow ! 0.55 L 0M o.o ON 0,035 0:03 0.025 0.02' 0.015 a Typ6 to 24=hr, 25 YEAk -Ralrtfall,5.28" Rtmoff Am=3;128 sf - Runoff Volume-=-1,3-1-af Runoff ©epth>5.44" Tc=15.0-Ort CN -10i98 S{tT.7_\�I�]�b3i7gp1 std PARCELS Type IA 24 -hr 25 YEAR Rainfal1=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n 04646 02010 HVdroCAD Software Solutions LLC Pace 9 Summary for Subcatchment PARCEL 2 -ROOF: PARCEL 2 EXISTING Runoff = 0.02 cfs @ 8.01 hrs, Volume= 353 of, Depth> 5.04" Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Type IA 24 -hr 25 YEAR Rainfall=5.28" 840 98 100.00`Yo Impervious Area To Length Slope Velocity Capacity Description (min) (feet) (Rift) (ft/sec) (cfs) 15.0 Direct Entry, 5 Subcatchment PARCEL 2 -ROOF: PARCEL 2 EXISTING 0.023 0 022 0.021 0.02 0.019 0.o18 0.07 0.016 0.015 0.014 D.o1a 0.012 0 011 u 0.01 0.009 0 008 0007 0.006 0,005 0.004 0.02 cfs - - I - - ■ a�noir Type MA 24 -hr -25 YEAR - Ran(ali 5 48"-- - --Runoff /l.rea 840=sf . Ruoff Volume=353 cf Runoff- De pth> 5.04"- - tC rUiiM- CN=W98-- 835 ANDERSON LANE PARCELS Type IA 24 -hr 25 YEAR Rainfall=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD6 9 10 s/n 04646 ® 2010 HydroCAD Software Solutions LLC Pace 10 Summary for Pond PARCEL 2: SOAKAGE TRENCH Inflow Area = 840 sf,100.00% Impervious, Inflow Depth > 5.04" for 25 YEAR event Inflow = 0.02 cfs @ 8.01 hrs, Volume= 353 cf Outflow = 0.01 cfs @ 10.34 hrs, Volume= 318 of, Atten= 76%, Lag= 139.8 min Discarded = 0.01 cfs @ 10.34 hrs, Volume= 318 of Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Peak Elev= 434.98' @ 10.34 hrs Surf.Area= 177 sf Storage= 103 cf Plug -Flow detention time= 247.9 min calculated for 318 of (90% of inflow) Center -of -Mass det. time= 176.3 min ( 842.6 - 666.3 ) Volume Invert Avail.Storage Storage Description #1 432.00' 171 cf 4.00'W x 11.50'L x 4.00'H TRENCH Z=1.0 517 of Overall x 33.0% Voids #2 434.70' 1 cf 4.0" D x 11.5'L 4" PERF PIPE 172 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 432.00' 1.260 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 10.34 hrs HW=434.98' (Free Discharge) 'L7=Exfiftration (Exfi0ration Controls 0.01 cfs) Pond PARCEL 2: SOAKAGE TRENCH Hydrograph nme 23 O.D2 c 0.023 --_-_.___ __ - o.M2- Irifbw Area=_4 i e 1 O.Mi. Peak �lev=434:981 _ 0.02 -- - 3.019 0,018 0.017 0016 '- " 0014 S 0,013 " 0.012 r '- 0.011- 001 -- 0:066 0.007 0 0006 - - -- 0.005 0004 " 0.003 " 0.002 0 001 0 . 0 1 2 34 5 6 7 89 nme 23 ■Inflow '� --_-_.___ __ ■ D'scattletl Irifbw Area=_4 i e 1 Peak �lev=434:981 _ Stdroge-iO3''Ct nme 23 835 ANDERSON LANE PARCELS Type IA 24 -hr 25 YEAR Rainfall=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydmCAD® 9.10 s/n 04646 02010 HydroCAD Software Solutions LLC Page 11 Summary for Pond PARCELS 1-3: SOAKAGE TRENCH Inflow Area = 3,128 sf,100.00% Impervious, Inflow Depth > 5.04" for 25 YEAR event Inflow = 0.08 cfs @ 8.01 hrs, Volume= 1,314 cf Outflow = 0.02 cfs @ 14.41 hrs, Volume= 1117 cf, Atten= 80%, Lag= 384.3 min Discarded = 0.02 cfs @ 14.41 hrs, Volume= 1,117 cf Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Peak Elev= 435:00' @ 11.72 hrs Surf.Area= 527 sf Storage= 402 cf Plug -Flow detention time= 281.0 min calculated for 1,113 cf (85% of inflow) Center -of -Mass det. time= 176.3 min ( 842.6 - 666.3 ) Volume Invert Avail.Storage Storage Description #1 432.00' 581 cf 11.00'W x 25.00'L x 4.00'H TRENCH Z=1.0 1,761 cf Overall x 33.0% Voids #2 434.50' 10 cf 6.0" D x 510.016" PERF PIPE 591 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 432.00' 1.260 in/hr Exfiltration over Surface area LisOutFlow Max=0.02 c% @ 14.41 hrs HW=434.92' (Free Discharge) =ExRltration (Exfiltration Controls 0.02 cfs) Pond PARCELS 1-3: SOAKAGE TRENCH e 9 10 11 12 13 14 15 7 1] 13 11 Time (h...) ■ ' 0.0-' ■ giaramaa Di.',- 0 oes 0.05 - -� Inflow iAr,'ea=3„428',-sf- °o� f>elt EI@v=435:QU' _ 0065 St6rage-402 Cf - 0.00 -- - ----. -- 0055 . 1 005 0.045 0035 0:03_,--.- 0.025'. e 9 10 11 12 13 14 15 7 1] 13 11 Time (h...) 835 ANDERSON LANE PARCELS Type IA 24 -hr QUALITY Rainfall=1.40" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 stn 04646 @2010 HydroCAD Software Solutions LLC Pace 12 Time span=0:00-25:00 hrs, dt=0.10 hrs, 251 points Runoff by SBUH method, Split Pervious/Imperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmentPARCEL 13 IMPROVED: Runoff Area=3,128sf 100.00%Impervious Runoff Depth>1.18" T�15.0 min CN=0198 Runoff=0.02 cfs 308 cf SubcatchmentPARCEL 2 -ROOF: PARCEL 2 Runoff Area=840 sf 100.00% Impervious Runoff Depth>1.18" Tc=15.0 min CN=0198 Runoff=0.01 cfs 83 cf Pond PARCEL 2: SOAKAGETRENCH Peak Elev=132.59' Storage=ll cf Inflow=0.01 cfs 83 cf Outflow=0.00 cfs 83 cf Pond PARCELS 1.3: SOAKAGE TRENCH Peak Elev=432.30' Storage=28 cf Inflow=0.02 cfs 308 cf Outflow=0.01 cfs 308 cf Total Runoff Area= 3,4368 sf Runoff Volume= 391 of Average Runoff Depth= 1.18" 0.00% Pervious = 0 sf 100.00% Impervious = 3,868 sf 835 ANDERSON LANE PARCELS Type IA 24 -hr QUALITY Rainfall=1.40" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s!n 04646 02010 HydnoCAD Software Solutions LLC Paoe 13 Summary for Subcatchment PARCEL 1-3 IMPROVED: PARCEL 1 & 3 IMPROVED Runoff = 0.02 cfs @ 8.01 hrs, Volume= 308 cf, Depth> 1.18" Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Type IA 24 -hr QUALITY Rainfall=1.40" 3,128 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fti t) (f tsec) Itis) 15.0 Direct Entry, 5 Subcatchment PARCEL 1-3 IMPROVED: PARCEL 1 & 3 IMPROVED 0.021 002: 0.02 cisI ------ 0,019 Type; lA 24-frr,QUALITY - 0.01a -- --- --------- 0.01]iMlh 3.016 - {� �j �r�j �( 00,6 ---RL-t-n ,ff Arel=11,-12{V8ST- 3.314 'RunoffY AIMime=3138=Cf 0013 --- - -- 0.312 RUlioff i?ejsth�'1.78" 0.011 - --'-- - --- - 301; tc=1,55-rrliil 0009- - - _ _�__ CN-------- 0,003 0.007 -- - - - - 0.0m - - 0.005 0.304 0 003 0.002 0.001 0 0 1 2 3 4 5 6 7 a 9 10 11 12 13 14 16 16 17 18 19 20 21 22 23 24 25 ■ RUnOR 835 ANDERSON LANE PARCELS Type IA 24 -hr QUALITY Rainfall=1.40" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n 04646 02010 HydroCAD Software Solutions LLC Page 14 Summary fGr Subcatchment PARCEL 2 -ROOF: PARCEL 2 EXISTING Runoff = 0.01 cis @ 8.01 hrs, Volume= 83 cf, Depth> 1.18" Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Type IA 24 -hr QUALITY Rainfall=1.40" 840 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description Iminl /feat\ (ft/ft) (ft/secl (cfsl uvect tntry, a Subcatchment PARCEL 2 -ROOF: PARCEL 2 EXISTING D.005 cfs - - _0,01 TypOA 24-hr,(QU y �LITY D.005 o0oa— Ra1nfa11=1.40:• T, Rurlofifarea=$4Q 0 0.0w. -Run oifFiVoCMe= Cf 0.003 0.003- ;7tUnOfifDepth>'1.18: _ _ _ .. _ _ -Tc=1,61.0 min- 0002' --CI\rII/98 0.002 19 20 21 22 Time (Imms) ■ RunoR 835 ANDERSON LANE PARCELS Type IA 24 -hr QUALITY Rainfall=1.40" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD9)9 10 s/n 04646 02010 HydroCAD Software Solutions LLC Pane 15 Summary for Pond PARCEL 2: SOAKAGE TRENCH Inflow Area = 840 sf,100.00e/ Impervious, Inflow Depth > 1.18" for QUALITY event Inflow = 0.01 cfs @ 8.01 hrs, Volume= 83 cf Outflow = 0.00 cfs @ 9.19 hrs, Volume= 83 cf, Alten= 63%, Lag= 70.4 min Discarded = 0.00 cfs @ 9.19 hrs, Volume= 83 cf Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Peak Elev=432.59' @ 9.19 hrs Swf.Area=66 sf Storage= 11 cf Plug -Flow detention time= 36.0 min calculated for 83 cf (100% of inflow) Center -of -Mass det. time= 35.9 min ( 743.9 - 708.0) Volume Invert Avail Storage Storage Description #1 432.00' 171 of 4.00'W x 11.60'L x 4.00'H TRENCH Z=1.0 517 of Overall x 33.0% Voids #2 434.70' 1 cf 4.0" D x 11.5'L 4" PERF PIPE 172 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 432.00' 1.260 Whir Exfiltration over Surface area pprscarded OutFlow Max=0.00 cfs @ 9.19 hrs HW=432.59' (Free Discharge) z1 =Exfiltration (Exfltration Controls 0.00 cfs) Pond PARCEL 2: SOAKAGE TRENCH Hydmgraph ■ Inflow 0.01 cfs ■oa�r� a005 _ a=84.0 ''sf Irifl'low'Are _ -- -- O �,- tPeak-Elev432M5 0.034- a3oa- - - -- -. -Storage=1�1cf 0003 -- _ '- 0.003- X 0002- 0.00 cfs 0003 a 301 .301 0,001- 0.330 UN - 91 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (houml 835 ANDERSON LANE PARCELS Type IA 24 -hr QUALITY Rainfall=1.40" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 1212112022 HydmCAD0 9 10 s/n 04646 02010 HydroCAD Software Solutions LLC Page 16 Summary for Pond PARCELS 1-3: SOAKAGE TRENCH Inflow Area = 3,128 sf,100.00% Impervious, Inflow Depth > 1.18" for QUALITY event Inflow = 0.02 cfs @ 8.01 hrs, Volume= 308 of Outflow = 0.01 cfs @ 8.88 hrs, Volume= 308 of, Atten= 55%, Lag= 51.8 min Discarded = 0.01 cfs @ 8.88 hrs, Volume= 308 of Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Peak Elev= 432.30' @ 8.88 hrs Surf.Area= 297 sf Storage= 28 cf Plug -Flow detention time= 17.9 min calculated for 308 cf (100% of inflow) Center -of -Mass det. time= 17.9 min ( 725.9 - 708.0) Volume Invert Avail Storage Storage Description #1 432.00' 581 cf 11.00'W x 25.00'L x 4.00'H TRENCH Z=1.0 1,761 of Overall x 33.0% Voids #2 434.50' 10 of 6.0" D x 50.0'L 6" PERF PIPE 591 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 432.00' 1.260 in/hr ExHitration over Surface area Discarded OutFlow Max=0.01 cfs @ 8.88 hrs HW=432.30' (Free Discharge) t1=Exfiltration (ExflRration Controls 0.01 cfs) Pond PARCELS 1-3: SOAKAGE TRENCH 1 2 3 4 5 U f U V IV l Time (hoard Hydrogmph _ ■ 0021 _ , _ 0.02 cfS --_. Di, ■ Divardetl 0006 - Inflow rea�3„12&sf_ _ a 018 Peak_R(evt 433 3(N D017 0.016 - . i- _ ._._/� '- -Sto ager28,ct- 2015 0.014 0.013 - - - - - a 0.012 -- -- 0.01 -0.01 cfs 1 0 o0a 0.00x' ,-- 0.006 1 2 3 4 5 U f U V IV l Time (hoard PUBLIC STREET TREATMENT 835 ANDERSON LANE PUBLIC STREET Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCADO 9.10 s/n 04646 © 2010 HydroCAD Software Solutions LLC Paae 1 Area Listing (all nodes) Area CN Description (sq -ft) (subcatchment-numbers) 3,515 98 PAVEMENT, CURB, GUTTER, SIDEWALK (IMPROVED STREET) 3,515 98 TOTAL AREA 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr 5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12121/2022 HvdmCAD® 9.10 s/n 04646 0 2010 HvdroCAD Software Solutions LLC Pace 2 Time span=0.00-25.00 hrs, dt=0.10 hrs, 251 points Runoff by SBUH method, Split Pervious/Imperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment IMPROVED STREET: Runoff Area=3,515 at 100.00% Impervious Runoff Depth>3.37" Tc=15.0 min CN=0/98 Runoff=0.06 ds 986 cf Pond STREET: SOAKAGE TRENCH Peak Elev=433.34' Storage=223 cf Inflovn0.06 ds 986 d Outflow=0.01 ds 984 d Total Runoff Area= 3,515 sf Runoff Volume= 986 of Average Runoff Depth= 3.37" 0.00%, Pervious = 0 sf 100.00% Impervious = 3,515 sf 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr 5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydmCAD® 9.10 s/n 04646 © 2010 HydroCAD Software Solutions LLC Pape 3 Summary for Subcatchmertt IMPROVED STREET: STREET Runoff = 0.06 cfs @ 8.01 hrs, Volume= 986 cf, Depth> 3.37" Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 his Type IA 24 -hr 5 YEAR Rainfall=3.60" Area (sf) CN Description 3,515 98 PAVEMENT CURB GUTTER SIDEWALK 3,515 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftl8) (f /sec) (efs) 15.0 Direct Entry, 5 Subcatchment IMPROVED STREET: STREET Hydrogmph 0.005 _ 0.. Cfg - ■ RumR 5.08- Ty pe- 1A 24,L -hr 5 Y-EAA 5.555 Rai,nfali=3:00" O.os- Runoff Area'-s'f 004- R6noff`WkII- je=9',8G c;f 0.035 R_ u_no_ ff depth>3.37" 003: 715.0 min 0.025- q/ p 002 1.5 ^fi 1 12 14 15 ifi Time (hours) 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr 5 YEAR Rainfall=3.60" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n 04646 @2010 HydroCAD Software Solutions LLC Page 4 Summary for Pond STREET: SOAKAGE TRENCH Inflow Area = 3,515 sf,100.00% Impervious, Inflow Depth > 3.37" for 5 YEAR event Inflow = 0.06 cfs @ 8.01 hrs, Volume= 986 cf Outflow = 0.01 cfs @ 10.32 hrs, Volume= 984 cf, Atten= 75%, Lag= 138.3 min Discarded = 0.01 cfs @ 10.32 hrs, Volume= 984 of Routing by Stor-Ind method, Time Span= 0.00-25.00 his, dt= 0.10 his Peak Elev= 433.34' @ 10.32 his Surf.Area= 504 sf Storage= 223 cf Plug -Flow detention time= 151.3 min calculated for 984 of (100% of inflow) Center -of -Mass det. time= 149.4 min ( 824.2 - 674.7 ) Volume Invert Avail.Storage Storage Description #1 431.68' 400 of 6.50'W x 48.00'L x 2.67'H TRENCH Z=1.0 1,247 cf Overall - 34 cf Embedded = 1,213 cf x 33.0% Voids #2 433.68' 34 cf 6.0" D x 96.0'L 8" PERF PIPE Inside #1 .n. _a T_._i n.._a..u., c.......... Device Routing Invert Outlet Devices #1 Discarded 431.68' 1.260 in/hr Exfiltration over Surface area 44rscarded OutFlow Max=0.01 cfs @ 10.32 hrs HW=433.34' (Free Discharge) 1--1=Exfiltration (Exflltration Controls 0.01 cfs) Pond STREET: SOAKAGE TRENCH Hydrogmph ■InOow 0.06 Cfs1 1� I I ■ o�s4amaa Inflow Arva=3,i515sf- 0.04 0.035 3 u 0.03 0 025 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr 25 YEAR Rainfall=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HvdroCAD® 9.10 s/n 04646 02010 HydroCAD Software Solutions LLC Page 5 Time span=0.00-25.00 hrs, dt=0.10 hrs, 251 points Runoff by SBUH method, Split Perviousflmperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmentlMPROVED STREET: Runoff Area=3,515 sf 100.00%Impervious Runoff Depth>5.04" Tc=15.0 min CN=0/98 Runoff=0.09 cfs 1,477 cf Pond STREET: SOAKAGE TRENCH Peak Elev=434.35' Storage=433 Cf Inflow=0.09 cis 1,477 cf Outflow --0.02 cfs 1,296 cf Total Runoff Area= 3,515 sf Runoff Volume = 1,477 cf Average Runoff Depth = 5.04" 0.00% Pervious = 0 sf 700.00% Impervious = 3,515 sf 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr 25 YEAR Rainfall=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 1212112022 HydroCAD®9 10 s/n 04646 © 2010 HydroCAD Software Solutions LLC Pace 6 Summary for Subcatchment IMPROVED STREET: STREET Runoff = 0.09 cfs @ 8.01 hrs, Volume= 1,477 cf, Depth> 5.04" Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hire, dt= 0.10 him Type IA 24 -hr 25 YEAR Rainfall=5.28" 3,515 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fttt) (ft/sec) (cfs) 15.0 Direct Entry, 5 Subcatchment IMPROVED STREET: STREET 0.095 _ _ _ ■ RunoR 0.09 cfs 0.08 - - --'f;-e-CA-244,h-r 26 YEAR 9.965 - _ry --, -------------- 0.08 -. -- - - 0.08 -RainfaN-;5.28"- 9075 -� hofflA-e----` 0.07 Ruror$,51 p065 !�- Runoff �Tolunie=l-471=of 005 -3-- f 0055 Runoff Depth>'5.M,' 905- -- --/--, u 0.045 -i Tc=15.0-fItIIF 0.035 �i- - - _-CN=0/98_ 093 0.025 002 0.015. - -- 0.01 0.005 0 1 2 3 4 6 8 8 0 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr 25 YEAR Rainfall=5.28" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydfoCAD® 9.10 s/n 04646 02010 HydroCAD Software Solutions LLC Page 7 Summary for Pond STREET: SOAKAGE TRENCH Inflow Area = 3,515 sf,100.00% Impervious, Inflow Depth > 5.04" for 25 YEAR event Inflow = 0.09 cfs @ 8.01 hrs, Volume= 1,477 cf Outflow = 0.02 cfs @ 11.42 hrs, Volume= 1,296 cf, Aften= 79%, Lag= 204.7 min Discarded = 0.02 cfs @ 11.42 hrs, Volume= 1,296 cf Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.10 hrs Peak Elev= 434.35 @ 11.42 hrs Surf.Area= 631 sf Storage= 433 cf Plug -Flow detention time= 262.7 min calculated for 1,296 cf (88% of inflow) Center -of -Mass det. time= 175.1 min ( 841.4 - 666.3 ) Volume Invert Avail.Storage Storage Description #1 431.68' 400 cf 6.60'W x 48.00'L x 2.67'H TRENCH Z=1.0 1,247 cf Overall - 34 cf Embedded = 1,213 cf x 33.0% Voids #2 433.68' 34 cf 8.0" D x 96.0'L 8" PERF PIPE Inside #1 434 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 431.68' 1.260 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 11.42 hrs HW=434.35' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.02 cfs) Pond STREET: SOAKAGE TRENCH 11 12 13 14 15 16 17 16 18 20 21 22 23 24 Ti.. (hours) - -- -�-_ cfs 0.09s i1-T- m.a 0o oa IMfC,ow Ar S sf 10 0.065 Rea_It=l_$v=43?4:35!_ 066 O.W5. - Stoiage_=! di��-ct__ 007-- - ---_--- --_-- 0065 6.66; 065 6.65 , 11 12 13 14 15 16 17 16 18 20 21 22 23 24 Ti.. (hours) 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr QUALITY Rainfall=1.40" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydroCAD® 9.10 s/n 04646 ® 2010 HydroCAD Software Solutions LLC Paae 8 Time span=0.00-25-00 bra, dt=0.10 hrs, 251 points Runoff by SBUH method, Split Pervious/Imperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment IMPROVED STREET: Runoff Area=3,515 sf 100.00% Impervious Runoff Depth>1.18" Tc=15.0 min CN=0198 Runoff=0.02 ds 346 cf Pond STREET: SOAKAGE TRENCH Peak Elev=431.96' Storage=30 d Inflow=0.02 cis 346 d Outflow=0.01 ds 346 cf Total Runoff Area= 3,515 sf Runoff Volume= 346 cf Average Runoff Depth= 1.18" 0.00% Pervious = 0 sf 100.00% Impervious = 3,515 sf sxlzvti�Y.�ur"tat� PUBLIC STREET Type IA 24 -hr QUALITY Rainfal1=1.4V Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/21/2022 HydmCAD® 9.10 s/n 04646 02010 HydmCAD Software Solutions LLC Pace 9 Summary for Subcatchment IMPROVED STREET: STREET Runoff = 0.02 ds @ 8.01 hrs, Volume= 346 cf, Depth> 1.18" Runoff by SBUH method, Split Pervious/Imperv., Time Span= 0.00-25.00 hrs, dt= 0.10 him Type IA 24 -hr QUALITY Rainfall=1.40" 3,515 98 PAVtMthlt.UUHtt UUI ILK, J1UtVVALK 3,515 98 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ff) (fUsec) (cfs) Dlrect tntry, 5 Subcatchment IMPROVED STREET: STREET 0023. 0.D2 0022... 0 02, TypeAA 2i1-hr�,.QIJAL11y 0,02- --J--`- u _ _ -Ra .- 0019 - - - - --' rxfalh1-.40 0 me: 0.01Y' - -- -- - pp- {�{{ ------ - - - - `-Pct dffAgea=3,015 s�f 9.me 0m6 _� IRuno- ff-V,-oiume=U-Frc# 0.013 Runoff Deptrr>1.�87" 0016 ,-_ - __, `_ '__ __________ I , 0.0„0.0, Tc=15_0-min u 0.009$- CN=019' 0.008 - - - --� - ON �_ - ii 000a 0.006 0.004- 0002 0.002- 0.0011 -- - Time (hours) ■ Rwmr 835 ANDERSON LANE PUBLIC STREET Type IA 24 -hr QUALITY Rainfall=1.40" Prepared by GOEBEL ENGINEERING & SURVEYING Printed 12/2112022 HvdmCADV 9.10 s/n 04646 C 2010 HydroCAD Software Solutions LLC Page 10 Summary for Pond STREET: SOAKAGE TRENCH Inflow Area = 3,515 sf,100.00% Impervious, Inflow Depth > 1.18" for QUALITY event Inflow = 0.02 cfs @ 8.01 hrs, Volume= 346 cf Outflow = 0.01 cis @ 8.84 hrs, Volume= 346 cf, Atten= 54%, Lag= 49.4 min Discarded = 0.01 cls @ 8.84 hrs, Volume= 346 cf Routing by Stor-Ind method, Time Span= 0.00-25.00 his, dl= 0.10 hrs Peak Elev= 431.96'@ 8.84 hrs Surf.Area= 342 sf Storage= 30 cf Plug -Flow detention time= 14.8 min calculated for 345 of (100% of inflow) Center -of -Mass det. time= 14.7 min ( 722.7 - 708.0 ) Volume Invert Avail.Storage Storage Description #1 431.68' 400 cf 6.50'W x 48.001 x 2.67'H TRENCH Z=7.0 1,247 cf Overall - 34 cf Embedded = 1,213 cf x 33.0% Voids #2 433.68' 34 cf III D x 96.018" PERF PIPE Inside #1 434 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 431.68' 1.260 in/hr Exfiltration over Surface area giscarded OutFlow Max=0.01 cfs @ 8.84 hrs HW=431.95' (Free Discharge) 7=ExflRration (Exfilhatlon Controls 0.01 cfs) Pond STREET: SOAKAGE TRENCH Hydmgmph ■ Irm-w 0.024. 0.02 cfs - - - • _' - ■ olsramea 0923; Oozz '- Infl',ow 4+'ea=3,i5i 5, sf- 0.02 -.- Peag f : 31. IF Fe 0.019 0.018- -I -- -- /� }} - - ---, -- ---Staf7@Q� -CI- 0.X_ 0.01&-- --- -- - - -- 0.015_ -'i _ 0014,- u 0.013' 0012- - - 0.01 efs - 9 0,011 _ n 0009. a W7 O.We 0.005 0 004- 0 W3 002 owl 0 0 1 2 3� 4 5 6 7 8 9 10 11 12 13 14 15 15 17 18 19 20 21 22 23 24 25 Time liloms/ INFILTRATION TEST CvebelNBupjueeug k Suing PURPOSE: r 7MP PFtE55 u r i Z �i 4 z2 -1 v�,7 - -F 1 ^.F t_ I R� N: 55- INS RUMENT: FILE(S:. � ������ ��■��r rim SITE PLAN TENTATIVE PARTITION A STORMWATER TREATMENT II FOR BETTY KOEHLER r , F NE 1/4 SEC. 33, T.17S., R. 3., W. M. SPRINGFIELD, LANE COUNTY, OREGON p Q December 15, 2022 a no 0 SCALD 0 1'=20 4�699 REDUCED COPY r a I 4 PR P :II I II Id s :; 11 EAST 104.28 12' TOPSOIL 18' PA r NEW ST0.PMWAIER 4%W f rp 0AMCE TRENCH 4M.0 •� 28' IO A - I PAW ,,A QO2 434.50 /\ CIFAN ORNN ROCK '$ _ U �r� ,V PERFORATD R'Pf \\ - mm �•rkF PARCEL 1 1 OR 2 PER pESTsE\/ WRAP r-. LI W li 81257 SF ^ Q05 SRMNATER SOAKAGE TRENCH MOM 10x28 ��, N.T.S. II i PAR I'a'II I' p 7/YD��l i .II a � I ✓/ � � �h Z� IE4A I ' E VM6 :I NFN STORAWN M YV/�p�1 1 5Wb E TRENCH 4 - w£s! a, 00 r sNEsufNlAn '17M .•,Snt ?SII —'- 81LL �^ - 2.75' 1. PARCEL I @ 3 SOAKAGE TRENCH 59E = II X25' WEST 64.28 BIM=432.4 2-6' PERF PIP&, FL=414.5, IOP=4 .O Apl \ 2 PARCEL 1 5BNCH WE = 4X11.5' BIAI=432.4' t-4'-4" !BE PERF PIPE; AM34J, !OP -__435.0 ZSPJ N o QQQ J. PWB SMKAO£ TRENCH SIZE = 6.5X48' _ �(L RIM=431.67, 2-6" PERF HPE a --4J 6B, WP 4.M PARCEL STORI(IIATER soAEACE aieEacH DR= 257 SF NT.S. NEW SIDRMWA£R 56WACE TRENCH I 11 I Ty 500 P Goebel 90&eeriug k Surveying STORYNATER TREdg9UT PA&W5 IMPERVIOUS AR PARCEL I k J ASS W f L M /W LF OF PARCLZ AREA=J,21B ST -ROOF AREA=2640 SF -O81IfWAY ANO WALKS=576 5£ PARCEL 2 EXI m ROOF AREA -840 SF PERCWAPM) 14A 1 E0 RATE=2.5J RF/HR "ON RALE -1.26 IN/HR PARCEL SWKAp !BENCH SIZED W ACCONMOL 25 MR Fl X EYENl. 50.AK !BENCH WAk PFR RRS SHE£T. IMPERVIOUS AREA: HALF SlREE! PAVEMENT, CORE, wO ANO S/CEWALK AREA=J515 SF PERCO(A]XIN: MEASURED RAE=Z5J RH/HR DESIGN RA7=1.26 kI/HR PUBLIC SOAKAGE TRENCH WO TO AGCOMMOAIIE 25 YEAR FLOOD EVENT. SOlK TRENCH OEIAR PER iW5 SHEET. EXPIRES.' 6/30/2073 ra< W ARJAWl0iel