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Addendum to Drainage C Tahoma Terra Division I & II Addendum to Final Drainage Report C October 2005 n ~' U ~' L~ ~,~ ~-, OCT 3 1 Zuu~ u ~' V C DESIGN/BUILD .CIVIL AND TRANSPORTATION ENGINEERING. PLANNING .SURVEYING 9 Consulting Group C Addendum To The Final Drainage and Erosion Control Report C Tahoma Terra Yelm, Washington C October 2005 C Project Information Prepared for Tahoma Terra, L.L.C. ~ Contact Steven L. Chamberlain 4200 6th Ave .SE, Ste. 301 C Lacey, WA 98503 (360) 493-6002 ~J Reviewing Agency CITY City of Yelm, WA C Project Number 04104 Project Contact James E. Gibson ~ "~ - „ C Project Engineer 3 ~ ~ ~ ""„ i~ ~~ ` ~ ~ _ ~' Prepared by= ~~' _ ~ SCA Consulting Group ~ ~ ' 4200 6th Avenue SE, Ste. 301 •4 '- , ~ _ ` ~J . - Lacey, WA 98503 ~' ~ _ (360) 493-6002 - - ~ :~> c~ ~ _ FAX (360) 493-2476 ,,, ~ Contact Robert E Holcomb, PE ' ~ Engineer Manager ' -~ .-- • - ~ ' SCA Pro~ect~ 04104 ~"°°-""'""`"`_~~~~~ ~~~~~ ' File Number r_a4104fI"~"Add~d~m.doc G~\text\pf\2004\04104\reports\fd ~ I U n PROJECT ENGINEERS CERTIFICATION I hereby certify that this Addedum to the Drainage Report and Erosion Control Plan for Tahoma Terra m Yelm, Washington has been prepared by me or under my supervision and meets the intent of the City of Yelm C Development Guidelines and 1992 Washington State Department of Ecology (WSDOE) Stormwater Management Manual for the Puget Sound Basin unless noted otherwise, and normal standards of n engineering practice I understand that the jurisdiction does not and ~ will not assume liability for the sufficiency, suitability, or 1 performance of drainage facilities designed for this development. I C Stormwater Treatment/Infiltration= The design for the treatment and infltraion for the following basins are revised as ~ follows U Basin C~ (~ Basin C tota12.56 ac includes 10 building lots, the 0.77 ac of impervious pavement, L1 0.19 ac impervious sidewalk, 0.11 ac impervious driveways, 0.34 ac roofs, and 1.15 ac disturbed pervious landscaping areas. Runoff from the proposed roadways, sidewalk and driveways will sheet flow along curb C gutter with series of catch basins. The catch basins will be connected with a 12" storm pipe. The storm water will then be discharged from the last catch basin into a temporary bio infiltration Swale. The temporary bio infiltration swale consists of C appropriate vegetation and compost amended soil which will provide stormwater quality treatment, storage, and infiltration. The stormwater flows of this basin will be ~ include m the design for the stormwater system for the commercial tract when they are developed. It is antiicpted that the area utilized for the bio infiltration swales will be utilized for the loction of the Strom drainage system for the comerical area.. See the Appenix I for calculations. n LJ Basin K= Basin K total 3.77 ac includes 19 building lots, the 1.02 ac of impervious pavement, 0.24 ac impervious sidewalk, 0.22 ac impervious driveways, 0.65 ac roofs, and 1.64 ac disturbed pervious landscaping areas. Runoff from the proposed roadways, sidewalk and driveways will sheet flow along curb gutter with series of catch basins. The catch basins will be connected with a 12" storm C pipe. The storm water will then be discharged from the last catch basin into a temporary bio-infiltration Swale. The temporary bio-infiltration Swale consists of n appropriate vegetation and compost amended soil which will provide stormwater quality treatment, storage, and infiltration. The stormwater flows of this basin will be include in the design for the stormwater system fo rthe commercial tract when they are C developed. It is antiicpted that the area utilized for the bio infiltration swales will be utilized for the loction of the Strom drainage system for the comerical area.. See the Appenix I for calculations. j ' Basin L U Basin L total 1.78 ac includes the 0.94 ac of impervious pavement, 0.38 ac impervious sidewalk, and 0.46 ac disturbed pervious landscaping areas. C Runoff from the proposed roadways, sidewalk and driveways will sheet flow along curb gutter with series of catch basins. The catch basins will be connected with a 12" storm pipe. The storm water will then be discharged from the last catch basin into the C temporay bio- infiltration swale north of the Commerical approach on Tahoma Boulavard. This temporay bio- infiltration Swale has been sized to handle both Basin L and Basin M. flows. The temporary bio infiltration Swale consists of appropriate C vegetation and compost amended soil which will provide stormwater quality treatment, storage, and infiltration. The stormwater flows of this basin will be include in the design for the stormwater system fo rthe commercial tract when they are C developed. It is antucpted that the area utilized for the bio-infiltration swales will be I~ U utilized for the loction of the Strom drainage system for the comerical area.. See the Appenix I for calculations. U Basin M~ Basin M tota12.48 ac includes 12 building lots, the 0.47 ac of impervious pavement, C 0.14 ac impervious sidewalk, 0.14 ac impervious driveways, 0.41 ac roofs, and 1.31 ac disturbed pervious landscaping areas. Runoff from the proposed roadways, sidewalk and driveways will sheet flow along curb gutter with series of catch basins. The catch basins will be connected with a 12" storm th b - th l t t h b i i t h d f ill h b d Th e io e ca c as n n o isc arge rom as e storm water w t en e pipe. infiltration swales. The bio-infiltration swales consists of vegetation consisting of grass, (~ conifer shrubs and trees, compost amended, soil, and pea gravel which will provide U stormwater quality treatment, storage, and infiltration. In addition an m-line infiltration gallery will provide underneath the bio-infiltration swales storage and n infiltration back to groundwater for the 100-year storm. See Appendix 1 for calculations. n Basin N~ ~ U Basin N total 0.76 ac includes the 0.39 ac of impervious pavement, 0.15 ac impervious sidewalks, and 0.22 ac disturbed pervious landscaping areas. Runoff from the proposed roadways, sidewalk and driveways will sheet flow along curb C gutter with series of catch basins. The catch basins will be connected with a 12" storm pipe. .The storm water will then be discharged from the last catch basin into a temporary bio-mfiltration Swale. The temporary bio-infiltration swale consists of C appropriate vegetation and compost amended soil which will provide stormwater quality treatment, storage, and infiltration. The stormwater flows of this basin will be include in the design for the stormwater system fo rthe commercial tract when they are developed. It is antiicpted that the area utilized for the bio-infiltration swales will be j utilized for the loction of the strom drainage system for the comerical area.. See the Appenix I for calculations. n Basin 0= Basin A total 1.81 ac includes future parking lot and roadway the 1.03 ac of impervious C pavement, 0.10 ac impervious sidewalk, 0.02 ac impervious driveways, 0.16 ac roofs, and 0.50 ac disturbed pervious landscaping areas. Runoff from the proposed roadways, sidewalk and driveways will sheet flow along curb gutter with series of catch basins. The catch basins will be connected with a 12" storm G pipe. .The storm water will then be discharged from the last catch basin into a temporary bio-mfiltration Swale. The temporary bio-infiltration Swale consists of appropriate vegetation and compost-amended soil which will provide stormwater C quality treatment, storage, and infiltration. The stormwater flows of this basin will be include in the design for the stormwater system fo rthe commercial tract when they are developed. It is antucpted that the area utilized for the bio-mfiltration swales will be (~ utilized for the loction of the strom drainage system for the comerical area.. See the U Appenix I for calculations. n ~J r-, ~~ ~-, r r-~ C Appendix 1 C Storm Drainage Calculations U I~I U I~ U r I~ U I~ U I~ U I FINAL DRAINAGE CALCULATIONS The following calculations are based on the requirements contained in the 1992 edition of the WSDOE Storm water Management Manual. STORM SHED CALCULATIONS BASIN C Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs) (ac-ft) ac /Loss BASIN C 0 28 8 00 0.1015 1 35 SBUH/SCS TYPE1A 6 mo BASIN C 0.47 8.00 0 1741 1 35 SBUH/SCS TYPE1A 2 yr BASIN C 0 75 8.00 0 2790 1 35 SBUH/SCS TYPE1A 10 yr BASIN C 0 89 8 00 0 3325 1.35 SBUH/SCS TYPE1A 25 yr BASIN C 0 97 8 00 0 3595 1 35 SBUH/SCS TYPE1A 50 yr BASIN C 1 04 8 00 0 3865 1 35 SBUH/SCS TYPEIA 100 yr Drainage Area: BASIN C Hyd Method• Peak Factor Storm Dur• Area CN Pervious 0 2379 ac Impervious 1.1126 ac Total 1 3505 ac Supporting Data: Pervious CN Data: PLANTER STRIP 78 00 Impervious CN Data: ROADWAY 98.00 SIDWALK 98.00 DRIVEWAY 98.00 Pervious TC Data: Flow type Time Sheet 1 90 min Sheet 6 43 min Sheet 6 43 min Channel 42 0000 Channel 42 0000 SBUH Hyd Loss Method: SCS CN Number 484 00 SCS Abs• 0 20 24 00 hrs Intv: 10.00 min TC 78.00 0 30 hrs 98 00 0 17 hrs 0.2379 ac 0.7239 ac 0 1822 ac 0.2065 ac Description: Length Slope. Coeff: Travel Accross Planter Stnp 6 00 ft 2.00% 0.2400 ALONG GUTTER 300.00 ft 0.50% 0.0110 ALONG GUTTER 300 00 ft 0.50% 0.0110 THROUGH STROM PIPE 599.00 ft 0.50% 3 36 min THROUGH STROM PIPE 47.00 ft 2.73% 0 11 min r In U I~ U Ifs l__1 I(~ l__J n U Impervious TC Data: Flow type Description: Length• Slope: Coeff: Travel Time Sheet Accross Roadway 27.00 ft 2.00% 0 0110 054 min Sheet ALONG FLOW LINE OF GUTT ER 300.00 ft 0.50% 0.0110 6.43 min Channel THROUGH STROM PIPE 599 00 ft 0.50% 42 0000 3 36 min Channel THROUGH STROM PIPE 47.00 ft 2.73% 42 0000 0 11 min MOVEHYD [BAS IN C] TO [BASIN C - 6 mo] AS [6 mo] Peak Flow 0.2804 cfs Peak Time: 8.00 hrs Hyd Vol: 4421.94 cf - 0 1015 acft MOVEHYD [BAS IN C] TO (BASIN C - 2 yr] AS [2 yr] Peak Flow: 0.4727 cfs Peak Time: 8.00 hrs Hyd Vol• 7583.60 cf - 0 1741 acft MOVEHYD [BAS IN C] TO [BASIN C -10 yr] AS [10 yrj Peak Flow: 0.7528 cfs Peak Time: 8.00 hrs Hyd Vol: 12154.34 cf - 0.2790 acft MOVEHYD [BAS IN C] TO [BASIN C - 25 yr] AS [25 yr] Peak Flow• 0.8949 cfs Peak Time 8 00 hrs Hyd Vol. 14485.16 cf - 0.3325 acft MOVEHYD [BAS IN C] TO [BASIN C - 50 yr] AS [50 yr] Peak Flow. 0 9664 cfs Peak Time. 8.00 hrs Hyd Vol: 15657.90 cf - 0.3595 acft MOVEHYD [BAS IN C] TO [BASIN C - 100 yr] AS [100 yr] Peak Flow: 1.0381 cfs Peak Time: 8 00 hrs Hyd Vol. 16834.93 cf - 0.3865 acft Hydrograph ID: BASIN C - 100 yr Area: 1 3505 ac Hyd Int: 10.00 min Base Flow: Peak Flow: 1.0381 cfs Peak Time 8.00 hrs Hyd Vol. 0.3865 acft Time Flow Time Flow Time Flow hr cfs hr cfs hr cfs 0 67 0 0023 9.00 0 4163 17 17 0 1523 0 83 0 0098 9 17 0 3754 17.33 0 1480 1 00 0 0205 9 33 0 3292 17 50 0 1464 1 17 0 0332 9 50 0 3123 17 67 0 1458 1 33 0 0463 9 67 0 2966 17 83 0.1456 1 50 0 0568 9 83 0 2815 18.00 0 1455 1 67 0 0671 10 00 0 2760 18 17 0 1423 1 83 0.0768 10 17 0 2646 18 33 0 1379 2 00 0 0840 10 33 0 2510 18 50 0 1363 2 17 0 0919 10 50 0 2461 18 67 0 1357 2 33 0 0997 10 67 0 2381 18 83 0 1354 2 50 0.1050 10 83 0 2289 19 00 0 1354 2 67 0 1091 11 00 0 2255 19 17 0 1321 2 83 0 1125 11 17 0 2212 19 33 0 1277 3 00 0 1154 11 33 0 2165 19 50 0 1261 3 17 0.1178 11 50 0 2149 19 67 0 1255 3 33 0 1200 11 67 0 2112 19 83 0 1252 3 50 0 1219 11 83 0 2067 20 00 0 1252 3 67 0 1261 12 00 0 2051 20 17 0 1251 3 83 0 1311 12 17 0 2014 20 33 0.1252 1 n 4 00 0 1337 12 33 0 1970 20 50 0 1252 4 17 0 1407 12 50 0 1954 20 67 0 1252 4 33 0 1492 12.67 0 1916 20 83 0 1252 4 50 0 1530 12 83 0.1871 21 00 0 1253 4 67 0 1604 13 00 0 1855 21 17 0 1253 4 83 0 1692 13 17 0 1850 21.33 0.1253 5 00 0 1732 13 33 0 1848 21 50 0 1253 5 17 0 1812 13 50 0.1848 21 67 0 1254 5 33 0 1906 13.67 0.1817 21.83 0 1254 5 50 0 1950 13 83 0 1774 22 00 0.1254 5 67 0 2033 14 00 0 1758 22.17 0 1222 5 83 0.2129 14 17 0 1753 22.33 0 1178 6 00 0 2174 14 33 0.1751 22 50 0 1162 6 17 0 2314 14 50 0 1751 22 67 0 1156 6 33 0 2490 14.67 0.1720 22 83 0 1153 6 50 0 2565 14 83 0 1676 23 00 0 1152 6 67 0 2778 15 00 0 1661 23.17 0 1152 6 83 0 3042 15 17 0 1655 23.33 0 1152 7 00 0 3150 15 33 0 1653 23 50 0 1152 7 17 0 3410 15 50 0 1653 23 67 0.1152 7 33 0.3726 15 67 0.1621 23 83 0 1152 7 50 0 3857 15 83 0 1578 24 00 0 1153 7 67 0 6119 16 00 0 1562 24 17 0 0798 7 83 0 9187 16 17 0 1556 24 33 0 0310 8 00 1.0381 16.33 0 1554 24 50 0 0125 8 17 0 9040 16 50 0 1554 24 67 0 0053 8 33 0 6746 16 67 0 1554 24 83 0 0024 8 50 0 5926 16 83 0 1554 25 00 0 0012 8 67 0 5170 17 00 0 1555 25 17 0 0006 8 83 0 4432 17 17 0 1523 25 33 0.0003 Node ID: dummy Desc Manhole structure -upend of bioswale Start EI: 331 7000 ft Max EI. 334.7000 ft Contnb Basin BASIN C Contrib Hyd: Reach ID: BIOSWALE C Section Properties: Shape. Ditch Routing Method Time Translation Size Material Mannings n Hyd params By Corr Metal -normal 0.0250 Mannings Formula Length Slope Entrance Loss 200.0000 ft 0.50 Width Bank Hgt ss1 ss2 10.0000 ft 1.0000 ft 3.OOh:1 v 3 OOh.1 v Up Node Dn Node Up Invert Dn Invert dummy 0.0000 ft 0.0000 ft Conduit Constraints: Min Vel Max Vel Min Cov Min Slope Max Slope ~ drop 2 0000 ft 15.0000 ft 3.0000 ft 0.5000 ft 2 0000 ft ft In/Exfil Hold Up Hold Dn Match Inv Allow Smaller ~ 0 0000 m/hr NO NO YES NO Conduit Summary: Trib Area Flow Capacity Velocity Normal Depth 1.3505 ac 1.0381 cf 1 0381 cf 0 9330 ft/s 1078 ft 0 Ent Loss Exit Loss Frict Loss . Start TW . 0 000000 ft 0 000000 ft 0.000000 ft 0.0000 ft Travel Min 0 0000 ROUTEHYD [BASIN C - 6 mo] THRU [BIOSWALE C] USING TYPE1A AND [6 mo] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin C /Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s ------------ BIOSWALE C 1 3505 0.2804 --- 1 00 0 0493 Ditch 0 5606 -- BASIN C C ROUTEHYD [BASIN C - 100 yr] THRU (BIOSWALE C ] USING TYPE1A AND [100 yr] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin / Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s ------------ BIOSWALE C 1 3505 1 0381 ---- 1 00 0.1078 Ditch 0 9330 ---- BASIN C C Node ID: Infiltration RLP Desc. Manhole structure Start EI~ 338.0000 ft Max EI. 339 0000 ft C Contnb Basin. BASIN C Contnb Hyd: Storage Id: Infiltration Trench Discharge Id' Infiltration Node ID: BASIN C TRENCH C Desc: Manhole structure Start EI 331.7000 ft Max EI: 334 7000 ft Contnb Basin. Contnb Hyd: Length ss1 ss2 Width ss3 ss4 200.0000 ft 3 OOh:1 v 3 OOh:1 v 10 0000 ft 3.OOh.1 v 3.OOh:1 v n Node ID: BASIN C RLP Desc: Manhole structure Start EI 331.7000 ft Max EI: 334.7000 ft C Contnb Basin: Contnb Hyd. Storage Id: BASIN C TRENCH Discharge Id: Infltration RLPCOMPUTE [BASIN C RLP] SUMMARY 100 yr Match Q: 1.0381 cfs Peak Out O: 1 7328 cfs -Peak Stg: 332.97 ft -Active Vol: 3567.56 C cfNode ~' L~ LJ r-, n LJ i ~1 I~ U U In U BASIN K Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs) (ac-ft) ac /Loss BASIN K 0 43 7 83 0 1482 1 99 SBUH/SCS TYPE1A 6 mo BASIN K 0.74 8 00 0 2545 1 99 SBUH/SCS TYPEIA 2 yr BASIN K 1.18 783 0.4086 1 99 SBUH/SCS TYPEIA 10 yr BASIN K 1 52 7 83 0 5269 1 99 SBUH/SCS TYPEIA 50 yr BASIN K 1 63 7 83 0.5666 1 99 SBUH/SCS TYPEIA 100 yr Drainage Area: BASIN K Hyd Method• SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 0.3694 ac 78 00 0.11 hrs Impervious 1.6207 ac 98.00 0.07 hrs 1 9901 ac Supporting Data: Pervious CN Data: Type B Soils 78.00 0 3694 ac Impervious CN Data: ROADWAY 98.00 1.1129 ac SIDEWALK 98 00 0.2504 ac DRIVEWAY 98 00 0 2574 ac Pervious TC Data: Flow type: Description. Length: Slope: Coeff: Travel Time Sheet Across Planter Strip 6.00 ft 2 00% 0.2400 1.90 min Sheet across roadway 18.50 ft 2.00% 0.0110 0 40 min Sheet along gutter 167.00 ft 1.19% 0 0110 2.84 min Channel through storm pipe 213.00 ft 0 50% 42.0000 1.20 min Impervious TC Data: Flow type. Description: Length• Slope Coeff• Travel Time Sheet Across Roadway 18 50 ft 2 00% 0.0110 0.40 min Sheet along flow line of Gutter 167 00 ft 1.19% 0 0110 2 84 min Channel Through Strom Water Pipe 213.00 ft 0.50% 42.0000 1 20 min MOVEHYD [BASIN K] TO [ BASIN K - 6 mo] AS [6 mo] Peak Flow• 0.4346 cfs Peak Time' 7 83 hrs Hyd Vol• 6454 24 cf - 0. 1482 acft I~ U n I~ U In U MOVEHYD [BASIN K] TO [BASIN K - 2 yr] AS [2 yr] Peak Flow 0.7371 cfs Peak Time. 8.00 hrs Hyd Vol acft MOVEHYD [BASIN K] TO [ BASIN K - 10 yr] AS [10 yr] Peak Flow: 1 1804 cfs Peak Time 7 83 hrs Hyd Vol acft MOVEHYD [BASIN K] TO [BASIN K - 25 yr] AS [25 yrj Peak Flow: 1 4066 cfs Peak Time: 7 83 hrs Hyd Vol acft MOVEHYD [BASIN K] TO [BASIN K - 50 yr] AS [50 yr] Peak Flow: 1 5205 cfs Peak Time• 7.83 hrs Hyd Vol• acft MOVEHYD [BASIN K] TO [ BASIN K -100 yr] AS [100 yr] Peak Flow: 1 6348 cfs Peak Time• 7.83 hrs Hyd Vol• acft Hydrograph ID: BASIN K - 100 yr Area: 1.9901 ac Hyd Int 10.00 min Base Flow• Pending tt translation• 3 75 min Peak Flow. 1 6348 cfs Peak Time: 7 83 hrs acft Time Flow Time Flow Time hr cfs hr cfs hr 0 67 0 0055 8 67 0 6870 16 50 0.83 0 0211 8 83 0 5803 16 67 1.00 0 0393 9 00 0 5862 16 83 1 17 0 0596 9.17 0.5108 17 00 1 33 0 0790 9 33 0 4387 17 17 1 50 0 0918 9 50 0 4424 17 33 1 67 0 1068 9 67 0 4198 17 50 1 83 0 1203 9 83 0 3984 17 67 2 00 0.1286 10 00 0 3998 17 83 2 17 0 1408 10 17 0 3771 18 00 2 33 0 1519 10 33 0 3555 18 17 2 50 0 1575 10 50 0 3568 18 33 2 67 0 1625 10 67 0.3416 18 50 2 83 0 1668 10 83 0 3272 18 67 3 00 0 1705 11 00 0 3281 18 83 3 17 0.1738 11 17 0 3206 19 00 3 33 0 1766 11 33 0 3134 19 17 3 50 0 1792 11 50 0 3140 19 33 3 67 0.1875 11 67 0 3065 19 50 3 83 0 1953 11 83 0 2993 19 67 4 00 0 1970 12 00 0 2998 19 83 4 17 0 2113 12 17 0 2922 20 00 4.33 0 2248 12 33 0 2850 20 17 4 50 0 2259 12 50 0 2855 20 33 4 67 0 2403 12 67 0 2779 20 50 4 83 0 2542 12 83 0 2706 20 67 5 00 0 2560 13 00 0 2710 20 83 5 17 0 2717 13 17 0 2712 21 00 5 33 0 2867 13 33 0 2713 21 17 5 50 0 2887 13 50 0 2715 21 33 5 67 0.3047 13 67 0 2639 21 50 5 83 0 3199 13 83 0 2565 21 67 6 00 0 3218 14 00 0 2569 21 83 6 17 0.3517 14 17 0 2570 22 00 6 33 0 3804 14 33 0 2572 22 17 6 50 0 3818 14 50 0 2573 22 33 6 67 0 4267 14 67 0 2496 22 50 6 83 0 4696 14 83 0 2422 22 67 11088.07 cf - 0.2545 17800.21 cf - 0 4086 21226 44 cf - 0 4873 22950.71 cf - 0.5269 24681.49 cf - 0 5666 Hyd Vol Flow cfs 0 2283 0 2284 0 2285 0 2286 0 2208 0 2133 0 2136 0 2137 0 2137 0 2138 0 2060 0 1985 0 1988 0 1988 0 1989 0 1989 0 1911 0 1835 0 1838 0 1838 0 1839 0 1839 0 1840 0 1840 0 1841 0 1841 0 1842 0 1842 0 1843 0 1843 0 1844 0 1844 0 1844 0 1845 0 1766 0 1690 0 1693 0 1693 0.5666 C U n I. U I(~ L__1 I~ U I~' U I~' U In U (~ LJ h i V 7 00 0.4709 15 00 0 2426 22 83 0.1693 7.17 0 5243 15 17 0 2427 23 00 0 1693 7 33 0 5754 15 33 0 2428 23 17 0 1694 7 50 0.5770 15.50 0 2429 23 33 0.1694 7 67 1 1144 15 67 0 2352 23 50 0.1694 7 83 1 6348 15 83 0.2277 23 67 0 1695 8 00 1 6317 16 00 0 2281 23 83 0.1695 8 17 1 1996 16 17 0 2281 24 00 0.1695 8 33 0.7778 16.33 0 2282 24 17 0.0820 8 50 0 7996 16 50 0 2283 24 33 0 0017 Node ID: dummy Desc• Manhole structure - up end of bioswale Start EI: 338.0000 ft Max EI• 339.0000 ft Contrib Basin: BASIN K Contrib Hyd: Reach ID: Bio Swale Section Properties: Shape: Ditch Routing Method: Travel Time Translation Size Material Mannings n Hyd params By Corr Metal -nor mal 0.0300 Mannings Formula Length Slope Entrance Loss 250.0000 ft 0 50 Width Bank Hgt ss1 ss2 10 0000 ft 3.0000 ft 3.OOh 1 v 3 OOh:1 v Up Node Dn Node Up Invert Dn Invert dummy 0.0000 ft 0 0000 ft Conduit Constraints: Min Vel Max Vel Min Cov Min Slope Max Slope Min drop 2 0000 ft 15.0000 ft 3.0000 ft 0 5000 ft 2 0000 ft 0 0000 ft In/Exfil Hold Up Hold Dn Match Inv Allow Smaller 10.0000 in/hr NO NO YES NO Conduit Summary: Trib Area Flow Capacity Velocity Normal Depth 0 0000 ac 0 0000 cf 0.0000 cf 0.0000 ft/s 0.0000 ft Ent Loss Exit Loss Frict Loss Start TW 0 000000 ft 0.000000 ft 0.000000 ft 0 0000 ft ROUTEHYD [ BASIN K - 100 yr] THRU [bio-swale k] USING TYPE1 A AND [100 yr] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin I Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s --------- --- bio-swale k 1 9901 1 6348 ---- 1 00 0 1413 Ditch 1 1101 ---- BASIN K ROUTEHYD [ BASIN K - 6 mo] THRU [bio-swale k] USING TYPE1A AND [6 mo] ZE RO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin / Hyd ac cfs cfs ratio ft ft/s ftls --------- --- ~ bio-swale k 1.9901 0 4346 ---- 1 00 0 0641 Ditch 0 6656 ----- BASIN K (~ I U C Control Structure ID: Infiltration -Infiltration control structure Descnp: Multiple Orifice Start EI Max EI Increment C 330.0000 ft 340 0000 ft 0 10 Infil: 20.00 in/hr Multiplier: 1.00 Node ID: trench k C Desc: Manhole structure Start EI: 330.3000 ft Max EI: 333 3000 ft C Contnb Basm: Length ss1 ss2 Contnb Hyd: Width ss3 ss4 250.0000 ft 3.OOh:1 v 3.OOh 1 v 10.0000 ft 3.OOh:1 v 3.OOh:1 v Cj Node ID: Infiltration RLP Desc: Manhole structure C Start EI: Contnb Basin: 334.0000 ft Max EI: Contnb Hyd: 338.0000 ft Storage Id: trench k Discharge Id: Infiltration C RLPCOMPUTE [Infiltration RLP] SUMMARY 100 yr MatchQ=PeakQ= 1.6348 cfs Peak Out Q: 1.2897 cfs -Peak Stg: 330 47 ft -Active Vol 456.13 cf ~' LJ n ~J n U n U n U n V n LJ r~ ~~ n Ll In U U n n n I L~ ~' n U n r~ i V BASIN LM Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs) (ac-ft) ac /Loss BASIN LM 0.56 8 00 0 1917 2 46 SBUH/SCS TYPE1A 6 mo BASIN LM 0 95 8 00 0 3266 2.46 SBUH/SCS TYPEIA 2 yr BASIN LM 1 50 8 00 0 5204 2 46 SBUH/SCS TYPEIA 10 yr BASIN LM 1 78 8.00 0 6188 2 46 SBUH/SCS TYPEIA 25 yr BASIN LM 1 92 8 00 0 6683 2 46 SBUH/SCS TYPE1A 50 yr BASIN LM 2.07 8.00 0 7179 2 46 SBUH/SCS TYPEIA 100 yr Drainage Area: BAS IN LM Hyd Method• SBUH Hyd Loss Method. SCS CN Number Peak Factor: 484.00 SCS Abs. 0 20 Storm Dur 24 00 hrs Intv• 10 00 min Area CN TC Pervious 0 3461 ac 78 00 0.12 hrs Impervious 2.1148 ac 98 00 0.10 hrs Total 2.4609 ac Supporting Data: Pervious CN Data: PLANTER STRIP 78 00 0 3461 ac Impervious CN Data: ROADWAY 98.00 1.4984 ac SIDEWALK 98 00 0 5131 ac DRIVEWAYS 98.00 0 1033 ac Pervious TC Data: Flow type' Description: Length: Slope. Coeff: Travel Time Sheet ACROSS PLANTER STRIP 6 00 ft 2.00% 0 1500 1 31 min Sheet ALONG GUTTER LINE 288.00 ft 2.00% 0.0110 3 57 min Channel THROUGH STROM PIPE 387.00 ft 0.50% 42.0000 2 17 min Impervious TC Data: Flow type. Description: Length: Slope. Coeff• Travel Time Sheet ACROSS PAVEMENT 18.50 ft 2 00% 0.0110 0.40 m i n Sheet ALONG GUTTER LINE 288.00 ft 2.00% 0.0110 357 mm Channel THROUGH STROM PIPE 387 00 ft 0 50% 42.0000 2 17 min Hydrograph ID: BASIN LM - 6 mo Area. 9 8436 ac Hyd Int: 10.00 min Base Flow: Peak Flow 3 2192 cfs Peak Time• 8 83 hrs acft MOVEHYD [BASIN LM] TO [BASIN LM - 6 mo] AS [6 mo] Peak Flow: 0 5639 cfs Peak Time• 8 00 hrs Hyd Vol• Hyd Vol: 2 8757 8349.50 cf - 0.1917 acft ~' I~ U n L~ n ~~ n ~~ In U n I~ l~ r~ V U Imo' U I~ U In U Ifs U Ir, U U n ~1 Ire ~J MOVEHYD [BASIN LM] TO [BASIN LM - 2 yr] AS [2 yr] Peak Flow: 0.9495 cfs Peak Time: 8.00 hrs Hyd Vol: 14228.21 cf - 0.3266 acft MOVEHYD [BASIN LM] TO [BASIN LM - 10 yr] AS [10 yr] Peak Flow: 1 5037 cfs Peak Time. 8.00 hrs Hyd Vol: 22667.93 cf - 0.5204 acft MOVEHYD [BASIN LM] TO (BASIN LM - 25 yr] AS [25 yr] Peak Flow: 1.7841 cfs Peak Time: 8.00 hrs Hyd Vol: 26956 33 cf - 0.6188 acft MOVEHYD [BASIN LM] TO [BASIN LM - 50 yr] AS [50 yr] Peak Flow• 1 9248 cfs Peak Time. 8.00 hrs Hyd Vol: 29111 31 cf - 0.6683 acft MOVEHYD [BASIN LM] TO [BASIN LM - 100 yr] AS [100 yr] Peak Flow: 2.0659 cfs Peak Time: 8 00 hrs Hyd Vol: 31272.44 cf - 0 7179 acft Hydrograph ID: BASIN LM - 100 yr Area: 2.4609 ac Hyd Int: 10.00 min Base Flow: Peak Flow• 2 0659 cfs Peak Time: 8 00 hrs Hyd Vol. 0.7179 acft Time Flow Time Flow Time Flow hr cfs hr cfs hr cfs 0 67 0 0060 8 83 0 7544 16 67 0 2859 0 83 0 0244 9 00 0 7412 16 83 0 2860 1 00 0 0473 9 17 0 6583 17 00 0 2861 1 17 0 0734 9 33 0 5677 17 17 0 2777 1 33 0 0988 9 50 0 5585 17 33 0 2683 1 50 0 1168 9 67 0 5333 17 50 0 2674 1 67 0 1361 9 83 0 5062 17 67 0 2673 1 83 0 1540 10 00 0 5038 17 83 0 2674 2 00 0 1659 10 17 0 4790 18.00 0 2675 2 17 0 1811 10 33 0 4518 18.17 0 2590 2 33 0 1958 10 50 0 4492 18 33 0 2496 2 50 0 2042 10 67 0 4326 18 50 0 2487 2 67 0 2109 10 83 0 4144 18 67 0 2486 2 83 0 2167 11 00 0 4127 18 83 0 2487 3 00 0 2217 11 17 0 4044 19 00 0 2487 3 17 0 2260 11 33 0 3954 19 17 0 2403 3 33 0 2298 11 50 0 3947 19 33 0 2309 3 50 0 2332 11 67 0 3865 19 50 0 2299 3 67 0 2429 11 83 0 3774 19 67 0 2298 3 83 0 2531 12 00 0 3767 19 83 0 2298 4 00 0 2565 12 17 0 3684 20 00 0 2299 4 17 0 2728 12 33 0 3593 20 17 0 2299 4 33 0 2904 12 50 0 3585 20 33 0 2300 4 50 0 2943 12 67 0 3502 20 50 0 2300 4 67 0 3107 12 83 0 3410 20 67 0 2301 4 83 0 3286 13 00 0 3402 20 83 0 2301 5 00 0 3330 13 17 0 3402 21 00 0 2302 5 17 0 3506 13 33 0 3404 21.17 0 2302 5 33 0 3695 13 50 0 3406 21 33 0 2302 5 50 0 3742 13 67 0.3323 21 50 0 2303 5 67 0 3920 13 83 0 3231 21 67 0 2303 5 83 0 4111 14 00 0 3222 21 83 0 2304 6 00 0 4156 14 17 0 3222 22 00 0 2304 6 17 0 4487 14 33 0 3224 22.17 0 2219 6 33 0 4849 14 50 0 3225 22 33 0 2125 6 50 0 4914 14 67 0 3142 22.50 0 2115 I U I(~ U n I. U I U L r iL C. I~ U L 6 67 0 5407 14 83 0 3049 22.67 0 2114 6 83 0 5949 15.00 0 3040 22 83 0 2114 7 00 0 6037 15.17 0 3040 23 00 0 2114 7 17 0 6624 15 33 0 3041 23 17 0 2115 7 33 0.7266 15.50 0 3042 23 33 0 2115 7 50 0 7370 15 67 0 2959 23 50 0 2115 7 67 1 3228 15 83 0 2866 23 67 0 2116 7 83 1 9778 16 00 0 2857 23 83 0 2116 8 00 2 0659 16 17 0 2856 24 00 0 2116 8 17 1 6010 16 33 0 2857 24 17 0 1175 8 33 1 0698 16.50 0 2858 24 33 0 0130 8 50 1 0160 16 67 0 2859 24 50 0 0015 8 67 0 8895 16 83 0 2860 24 67 0 0001 Reach ID: BIO-SWA LE LM Section Properties: Shape: Ditch Routing Method: Travel Time Translation Size Material Mannings n Hyd params By Corr Metal -nor mal 0 0250 Mannings Formula Length Slope Entrance Loss 140.0000 ft 0 50 Width Bank Hgt ss1 ss2 25.0000 ft 3 0000 ft 3.OOh:1v 3.OOh:1v Up Node Dn Node Up Invert Dn Invert DUMMY LM 0 0000 ft 0.0000 ft Conduit Constraints: Min Vel Max Vel Mln Cov Mln Slope Max Slope Min drop 2 0000 ft 15 0000 ft 3.0000 ft 0 5000 ft 2 0000 ft 0 0000 ft In/Exfil Hold Up Hold Dn Match Inv Allow Smaller 0 0000 in/hr NO NO YES NO Conduit Summary: Trlb Area Flow Capacity Velocity Normal Depth 2 4609 ac 2.0659 cf 2 0659 cf 0 8662 ft/s 0 0943 ft Ent Loss Exit Loss Frict Loss Start TW 0 000000 ft 0.000000 ft 0 000000 ft 0 0000 ft Node ID: DUMMY LM Desc~ Manhole structu re Start EI 327 8000 ft Max EI 331 8000 ft Contrib Basin: BASIN LM Contrib Hyd: ROUTEHYD [BASIN LM - 6 mo] THRU [BIO-SWALE LM] USING TYPE1A AND [6 m o] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin I Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s --------- --- BIO-SWALE LM 2 4609 0 5639 ---- 1 00 0 0433 Ditch 0 5179 ----- BASIN LM ROUTEHYD [BASIN LM - 100 yr] THRU (BIO-SWALE LM] USING TYPE1A AND [100 yr] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin I Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s --------- --- BIO-SWALE LM 2 4609 2 0659 --- 1 00 0 0943 Ditch 0 8662 ----- BASIN LM I(~ U r-, LJ Node ID: TRENCH LM ~-, Desc. Manhole structure Start EI: 327 8000 ft Max EI: 331 8000 ft Contnb Basin: Contrib Hyd: Length ss1 ss2 Width ss3 ss4 C 140.0000 ft 3.OOh:1v 3.OOh~1v 25.0000 ft 3.OOh:1v 3.OOh.1 v Node ID: TRENCH LM C Desc: Manhole structure Start EI. 327.8000 ft Max EI: 331 8000 ft Contnb Basin: Contrib Hyd: C Length ss1 ss2 Width ss3 ss4 140.0000 ft 3.OOh.1 v 3 OOh.1 v 25.0000 ft 3 OOh:1 v 3.OOh:1 v C Node ID: BASIN LM RLP Desc. Manhole structure Start EI: 327 8000 ft Max EI: 331 8000 ft C Contrib Basin: Contrib Hyd: Storage Id: TRENCH LM Discharge Id: Infiltration RLPCOMPUTE [BASIN LM RLP] SUMMARY C 100 yr MatchQ=PeakO= 2 0659 cfs Peak Out O' 1 7080 cfs -Peak Stg: 327 98 ft -Active Vol: 646 63 cf r ~~ ~J In U r r v BASIN N Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs) (ac-ft) ac /Loss BASIN N 0 16 8.00 0 0537 0.61 SBUH/SCS TYPE1A 6 mo BASIN N 0 27 8 00 0 0895 0 61 SBUH/SCS TYPEIA 2 yr BASIN N 0 41 7 83 0.1397 0 61 SBUH/SCS TYPE1A 10 yr BASIN N 0 48 7 83 0 1648 0 61 SBUH/SCS TYPEIA 25 yr BASIN N 0 52 7 83 0 1774 0.61 SBUH/SCS TYPE1A 50 yr BASIN N 0 56 7 83 0 1899 0.61 SBUH/SCS TYPE1A 100 yr Drainage Area: BASIN N Hyd Method: Peak Factor Storm Dur• Area Pervious Impervious Total 0.6054 ac Supporting Data: Impervious CN Data: SBUH Hyd 484.00 24.00 hrs CN TC 0.0000 ac 78.00 0 6054 ac 98 00 Loss Method: SCS CN Number SCS Abs 0 20 Intv• 10 00 min 0 00 hrs 0 08 hrs ROADWAY 98.00 0.4280 ac SIDWALK 98.00 0.1774 ac Impervious TC Data: Flow type Description• Length: Slope: Coeff: Travel Time Sheet ACROSS PAVEMENT 27.00 ft 2.00% 0 0110 0.54 min Sheet ALONG GUTTER 262.00 ft 2 00% 0.0110 3 31 min Channel Through Strom Water Pipe 64 00 ft 0 50% 42 0000 0.36 m i n Channel THROUGH STROM PIPE 54.00 ft 1 26% 42 0000 0 19 min Channel THROUGH STROM PIPE 34.00 ft 0.50% 42.0000 0 19 min Channel THROUGH STROM PIPE 53.00 ft 2 43% 42 0000 0.13 min MOVEHYD [BASIN N] TO [BASIN N - 6 mo] AS [6 mo] Peak Flow: 0.1624 cfs Peak Time: 8 00 hrs Hyd Vol. 23 38.22 cf - 0 .0537 acft MOVEHYD [BASIN N] TO [BASIN N - 2 yr] AS [2 yr] Peak Flow• 0.2674 cfs Peak Time 8.00 hrs Hyd Vol. 3899.05 cf - 0.0895 acft MOVEHYD (BASIN N] TO [BASIN N - 10 yr] AS [10 yr] Peak Flow 0 4127 cfs Peak Time 7 83 hrs Hyd Vol: 6083 41 cf - 0.1397 acft MOVEHYD [BASIN N] TO [BASIN N - 25 yr] AS [25 yr] Peak Flow: 0 4848 cfs Peak Time: 7 83 hrs Hyd Vol. 7178 60 cf - 0 1648 acft V In LJ i L. L I ~J MOVEHYD [BASIN N] TO [BASIN N - 50 yr] AS [50 yr] Peak Flow 0.5208 cfs Peak Time 7 83 hrs Hyd Vol MOVEHYD [BASIN N] TO [BASIN N - 100 yr] AS [100 yr] Peak Flow• 0.5567 cfs Peak Time: 7 83 hrs Hyd Vol Hydrograph ID: BASIN N - 100 yr Area. 0.6054 ac Hyd Infi Peak Flow• 0.5567 cfs acft Time Flow Time hr cfs hr 0 67 0 0020 8 67 0 83 0 0077 8 83 1 00 0 0145 9.00 1 17 0 0221 9 17 1 33 0 0293 9 33 1 50 0 0342 9 50 1 67 0 0397 9 67 1 83 0 0448 9 83 2 00 0 0480 10 00 2 17 0 0525 10 17 2 33 0 0566 10 33 2 50 0 0588 10 50 2 67 0 0606 10 67 2 83 0 0623 10 83 3 00 0 0637 11 00 3 17 0 0649 11 17 3 33 0 0660 11 33 3 50 0 0669 11 50 3 67 0 0699 11 67 3 83 0 0729 11 83 4 00 0 0736 12.00 4 17 0 0788 12 17 4 33 0.0838 12 33 4 50 0 0844 12 50 4 67 0 0896 12 67 4 83 0 0947 12.83 5 00 0 0951 13 00 5 17 0 1004 13 17 5 33 0 1055 13 33 5 50 0 1058 13 50 5 67 0 1110 13.67 5 83 0 1161 13 83 6 00 0 1164 14 00 6 17 0 1264 14 17 6 33 0 1362 14 33 6 50 0 1363 14.50 6 67 0 1513 14.67 6 83 0 1659 14 83 7 00 0 1659 15 00 7 17 0 1834 15 17 7 33 0 2004 15 33 7 50 0 2004 15 50 7 67 0 3807 15 67 7 83 0 5567 15 83 8 00 0 5535 16 00 817 04058 1617 8 33 0 2616 16.33 8 50 0 2659 16.50 7726 25 cf - 0.1774 acft 8274 04 cf - 0.1899 acft 10 00 min Base Flow: Peak Time: 7.83 hrs Hyd Vol Flow Time Flow cfs hr cfs 0.2287 16 33 0 0730 0 1926 16 50 0 0730 0 1937 16 67 0 0730 0 1688 16 83 0 0730 0 1447 17 00 0 0730 0 1454 17 17 0 0705 0 1379 17 33 0 0681 0.1307 17 50 0 0681 0 1309 17 67 0 0681 0 1235 17 83 0.0681 0 1162 18 00 0 0681 0 1165 18 17 0 0656 0 1115 18 33 0 0632 0 1066 18 50 0 0633 0 1068 18 67 0 0633 0 1043 18.83 0 0633 0 1019 19 00 0 0633 0 1020 19 17 0 0608 0 0995 19 33 0 0584 0 0971 19 50 0 0584 0 0972 19 67 0 0584 0 0947 19 83 0 0584 0 0922 20 00 0 0584 0 0923 20 17 0 0584 0 0898 20 33 0 0584 0 0874 20 50 0 0584 0 0875 20 67 0 0584 0 0875 20 83 0 0584 0 0875 21 00 0 0584 0 0875 21 17 0 0584 0 0850 21 33 0 0584 0 0826 21 50 0 0584 0 0827 21 67 0 0584 0.0827 21 83 0 0584 0 0827 22 00 0 0584 0 0827 22 17 0 0559 0 0802 22 33 0 0535 0 0778 22 50 0 0536 0 0778 22.67 0 0536 0 0778 22 83 0 0536 0 0778 23 00 0 0536 0 0778 23 17 0 0536 0 0753 23 33 0 0536 0 0729 23 50 0 0536 ~ 0 0730 23 67 0 0536 0 0730 23 83 0 0536 0 0730 24 00 0 0536 0 0730 24 17 0 0260 Node ID: dummy Desc: Manhole structure - up end of bioswale Start EI. 332.2000 ft Max EI: 335 2000 ft Contrib Basin: BASIN N Contnb Hyd: 0.1899 ~--, ~~ iL L r ~' Reach ID: BIOSWALE N Section Properties: Shape: Ditch Routing Method. Travel Time Translation Size Material Mannings n Hyd params By Corr Metal -normal 0 0250 Mannings Formula Length Slope Entrance Loss 125 0000 ft 0.50 Width Bank Hgt ss1 ss2 8 0000 ft 3 0000 ft 3.OOh 1v 3.OOh:1v Up Node Dn Node Up Invert Dn Invert dummy 0 0000 ft 0.0000 ft Conduit Constraints: Min Vel Max Vel Min Cov Min Slope Max Slope Min drop 2.0000 ft 15.0000 ft 3.0000 ft 0 5000 ft 2.0000 ft 0 0000 ft In/Exfil Hold Up Hold Dn Match Inv Allow Smaller 0 0000 in/hr NO NO YES NO Conduit Summary: Trlb Area Flow Capacity Velocity Normal Depth 0.0000 ac 0 0000 cf 0 0000 cf 0.0000 ft/s 0.0000 ft Ent Loss Exit Loss Frict Loss Start TW 0 000000 ft 0 000000 ft 0 000000 ft 0.0000 ft ROUTEHYD [BASIN N - 6 mo] THRU [BIOSWALE N] USING TYPE1 A AND [6 mo] Z ERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin / Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s --------- --- BIOSWALE N 0 6054 0 1624 ---- 1 00 0 0406 Ditch 0 4924 ---- BASIN N ROUTEHYD [BASIN N - 100 yr] THRU [BIOSWALE N] USING TYPE 1A AND [100 yr] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin / Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s --------- --- BIOSWALE N 0 6054 0 5567 ---- 1 00 0 0848 Ditch 0 7954 ----- BASIN N Control Structure ID: Infiltration -Infiltration control structure Descrip: Multiple Orifice Start EI Max EI Increment 332 2000 ft 340 0000 ft 0 10 Infil 20 00 in/hr Multiplier 1 00 Node ID: Infiltration Trench Desc• Manhole structure Start EI: 332 2000 ft Max EI: 335 2000 ft Contrib Basin. BASIN N Contrib Hyd: Length ss1 ss2 Width ss3 ss4 125 0000 ft 3 OOh 1v 3 OOh.1v 8 0000 ft 3 OOh•1v 3 OOh 1 v C Node ID: Infiltration RLP Desc: Manhole structure C Start EI: 338.0000 ft Max EI 339.0000 ft Contrib Basin: Contrib Hyd: Storage Id: Infiltration Trench Discharge Id: Infiltration ~ RLPCOMPUTE [Infiltration RLP] SUMMARY ~~ 100 yrMatch Q: 0.5567 cfs Peak Out Q. 0.7110cfs -Peak Stg: 332.82 ft -Active Vof• 775.47 cf In U ~' ~1 f' ~' r r--, r-, C BASIN O Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event U ------- (cfs) BASIN O (hrs) (ac-ft) ac /Loss 0.31 8.00 0 1048 1 30 SBUH/SCS TYPEIA 6 mo BASIN O 2 yr 0 51 8 00 0 1774 1 30 SBUH/SCS TYPEIA BASIN O 0 81 8 00 0 2809 1 30 SBUH/SCS TYPEIA 10 yr BASIN O 0 95 8 00 0 3332 1.30 SBUH/SCS TYPEIA 25 yr C BASIN O 1 03 8 00 0 3595 1 30 SBUH/SCS TYPEIA 50 yr BASIN O 1 10 8 00 0 3859 1 30 SBUH/SCS TYPEIA C 100 yr Drainage Area: BASIN O Hyd Method: SBUH Hyd Loss Method: SCS CN Nu mber C Peak Factor 484.00 SCS Abs: 0 20 Storm Dur. 24 00 hrs Intv• 10.00 min Area CN TC C Pervious Impervious 0.1317 ac 1.1639 ac 78 00 0 14 hrs 98 00 0.12 hrs Total 1 2956 ac C Supporting Data: Pervious CN Data: C Planter Strip 78.00 0.1317 ac Impervious CN Data: ROADWAY 98 00 1 0523 ac C SIDEWALK 98.00 0.1116 ac Pervious TC Data: C Flow type. Time Description. Length. Slope: Coeff: Travel Sheet Across Planter Strip 6.00 ft 2.00% 0.1500 1 31 mm C Sheet along gutter line 360 00 ft 1 00% 0 0110 5.63 min Channel through storm pipe 238.00 ft 0.50% 42.0000 1 34 mm Impervious TC Data: Flow type• Description. Length' Slope• Coeff Travel Time C Sheet ACROSS PAVEMENT 18.50 ft 2.00% 0.0110 0 40 min C Sheet 5.63 min ALONG GUTTER 360.00 ft 1.00% 0 0110 Channel Through Strom Water Pipe 238 00 ft 0.50% 42.0000 1.34 min C MOVEHYD (BASIN O] TO [BASIN O - 6 mo] AS [6 mo] Peak Flow. 0.3067 cfs Peak Time. 8.00 hrs Hyd Vol• 4 564.25 cf - 0.1048 acft C In U ~J (-' II U Ire U MOVEHYD [BASIN O] TO [BASIN O - 2 yr] AS [2 yr] Peak Flow: 0.5132 cfs Peak Time. 8.00 hrs Hyd Vol: 7727.26 cf - 0.1774 acft MOVEHYD [BASIN O] TO [BASIN O - 10 yr] AS [10 yr] Peak Flow• 0 8059 cfs Peak Time: 8.00 hrs Hyd Vol: 12234.64 cf - 0 2809 acft MOVEHYD [BASIN O] TO [BASIN O - 25 yr] AS [25 yr] Peak Flow: 0.9532 cfs Peak Time• 8 00 hrs Hyd Vol: 14516.16 cf - 0.3332 acft MOVEHYD [BASIN O] TO [BASIN O - 50 yr] AS [50 yr] Peak Flow• 1.0270 cfs Peak Time: 8.00 hrs Hyd Vol: 15661.05 cf - 0.3595 acft MOVEHYD [BASIN O] TO [BASIN O - 100 yr] AS [100 yr] Peak Flow• 1 1009 cfs Peak Time. 8.00 hrs Hyd Vol: 16808.46 cf - 0.3859 acft Hydrograph ID: BASIN O -100 yr Area: 1 2956 ac Hyd Int: 10 00 min Base Flow: Peak Flow 1 1009 cfs Peak Time: 8.00 hrs Hyd Vol 0 3859 acft Time Flow Time Flow Time Flow hr cfs hr cfs hr cfs 0 67 0 0030 8.83 0 4132 16 67 0 1521 0 83 0 0123 9 00 0 3996 16 83 0 1521 1 00 0 0246 9 17 0 3575 17 00 0 1522 1 17 0 0387 9 33 0 3096 17 17 0 1481 1 33 0 0526 9 50 0 3005 17 33 0 1433 1 50 0 0630 9 67 0 2870 17 50 0 1423 1 67 0 0736 9 83 0 2725 17 67 0 1422 1 83 0 0835 10 00 0 2699 17 83 0 1422 2.00 0 0904 10 17 0 2575 18 00 0 1422 2 17 0 0987 10 33 0 2432 18 17 0 1381 2 33 0 1067 10 50 0 2405 18 33 0 1333 2 50 0 1117 10.67 0 2321 18 50 0 1324 2 67 0.1156 10 83 0 2225 18 67 0 1322 2 83 0.1188 11 00 0 2208 18 83 0 1322 3 00 0 1216 11 17 0 2165 19 00 0 1322 3 17 0 1241 11 33 0 2117 19 17 0 1281 3 33 0 1262 11 50 0 2109 19 33 0 1233 3 50 0 1281 11 67 0 2068 19 50 0 1223 3 67 0 1331 11 83 0 2020 19.67 0 1221 3 83 0 1386 12 00 0 2011 19.83 0 1221 4 00 0 1409 12.17 0 1970 20 00 0 1221 4 17 0 1492 12 33 0 1922 20 17 0 1222 4 33 0 1587 12 50 0 1914 20 33 0 1222 4 50 0 1615 12 67 0 1872 20 50 0 1222 4 67 0.1700 12.83 0 1824 20.67 0 1222 4 83 0 1796 13 00 0 1815 20 83 0 1222 5 00 0 1827 13 17 0 1814 21.00 0 1222 5 17 0 1915 13 33 0 1814 21 17 0 1223 5 33 0 2016 13 50 0 1815 21 33 0 1223 5 50 0 2046 13 67 0 1775 21 50 0 1223 5 67 0 2136 13 83 0 1727 21 67 0 1223 5 83 0 2237 14 00 0 1718 21 83 0 1223 6 00 0 2267 14 17 0 1717 22 00 0 1224 6 17 0 2431 14 33 0 1717 22 17 0 1183 6 33 0 2622 14 50 0 1718 22.33 0 1134 6 50 0 2670 14 67 0 1678 22.50 0 1124 6 67 0 2916 14 83 0 1629 22 67 0 1123 6 83 0.3201 15 00 0 1620 22 83 0 1122 7 00 0 3269 15 17 0 1619 23 00 0 1122 7 17 0 3562 15 33 0 1619 23.17 0 1123 r U L i, 7 33 0 3899 15 50 0 1619 23.33 0.1123 7 50 0 3979 15 67 0 1579 23 50 0 1123 7 67 0 6841 15 83 0 1531 23 67 0 1123 7 83 1 0272 16 00 0 1522 23 83 0.1123 8 00 1 1009 16 17 0 1520 24 00 0 1123 8 17 0 8835 16 33 0.1520 24 17 0 0672 8 33 0 6070 16 50 0 1521 24.33 0 0132 8 50 0 5545 16.67 0 1521 24 50 0 0026 8 67 0 4856 16 83 0.1521 24 67 0 0004 Node ID: DUMMY O Desc• Manhole structure Start EI: 330 8000 ft Max EI: 333.8000 ft Contrib Basin: BASIN O Contrib Hyd: Reach ID: BIOSWALE O Section Properties: Shape. Ditch Routing Method• Travel Time Translation Size Material Mannings n Hyd params By Corr Metal -normal 0 0250 Mannings Formula Length Slope Entrance Loss 197 0000 ft 0 50 Width Bank Hgt ss1 ss2 10.0000 ft 3.0000 ft 3 OOh•1v 3 OOh:1v Up Node Dn Node Up Invert Dn Invert DUMMY N 0.0000 ft 0.0000 ft Conduit Constraints: Min Vel Max Vel Min Cov Min Slope Max Slope Min drop 2 0000 ft 15.0000 ft 3.0000 ft 0.5000 ft 2.0000 ft 0 0000 ft In/Exfil Hold Up Hold Dn Match Inv Allow Smaller 0.0000 in/hr NO NO YES NO Conduit Summary: Trib Area Flow Capacity Velocity Normal Depth 1 2956 ac 1.1575 cf 1 1575 cf 0.9729 ft/s 0.1150 ft Ent Loss Exit Loss Frict Loss Start TW 0 000000 ft 0 000000 ft 0.000000 ft 0.0000 ft ROUTEHYD [BASIN O - 6 mo] THRU [BIOSWALE O] USING TYPE1A AND [6 mo] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin I Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s --------- --- BIOSWALE O 1 2956 0 3067 ---- 1 00 0 0520 Ditch 0 5806 --- BASIN O ROUTEHYD [BASIN O - 100 yr] THRU [BIOSWALE O] USING TYPE1A AND [100 yr] ZERO RELATIVE Reach Area Flow Full Q % Full nDepth Size nVel fVel CBasin / Hyd ----- ac cfs cfs ratio ft ---- ft/s ft/s --------- --- BIOSWALE O 1 2956 1 1009 ---- 1 00 0 1116 Ditch 0 9543 ----- BASIN O I~ U Control Structure ID: Infiltration -Infiltration control structure Descnp: Multiple Onfice Start EI Max EI Increment 330 8000 ft 340.0000 ft 0 10 Infil: 20 00 in/hr Multiplier: 1.00 Node ID: Infiltration Trench Desc: Manhole structure Start EI: 330 8000 ft Max EI: 333.8000 ft Contrib Basin: Contrib Hyd: Length ss1 ss2 Width ss3 ss4 197 0000 ft 3.OOh:1 v 3.OOh:1 v 10 0000 ft 3.OOh:1 v 3.OOh:1 v Node ID: BASIN O RLP Desc: Manhole structure Start EI: 330.8000 ft Max EI: 333 8000 ft Contrib Basin: BASIN O Contrib Hyd: Storage Id: Infiltration Trench Discharge Id: Infiltration RLPCOMPUTE [BASIN N RLP] SUMMARY 100 yr MatchO=PeakQ= 1.1009 cfs Peak Out O: 0.9626 cfs -Peak Stg. 330 93 ft -Active Vol: 272.59 cf ~' FINAL DETAILED CALCULATIONS Basin `C'~ C Minimum Stormwater Storage Volume Required According to 1992 DOE Stormwater Management Manual for the Puget Sound Basins is 6mo. 24 hour storm volume. C According to StormShed Hydrograph Basin C the 6mo. 24 hour Vol.= 4,421 cf - 0.1015 acft V (b-swale) provided at 2ft depth = 6,400 cf is greater than 6mo. 24 hour storm so O.K. Bio-retention Cell will be 10 ft wide x 200ft long bottom and all sides 3~1 slope, and Oft deep ~, minimum (option#3). Storage Volume Provided = 6400 cf. > Required Volume = 4,421 cf. Therefore is adequate. [j According to StormShed the 100-year/24-hour storm event will result in peak volume of 16,835 cf - 0.3865 acft. C According to Storm Shed the peak depth for the 100 year Strom evemnt will be at elevation 332.97ft which is 1.27 above the bottom of the Swale with an active volume of 3,567 cf. n The Swale provides a volume of 11,400 cf which is greater than the active volume in the Swale. L Basin `K'~ C Minimum Stormwater Storage Volume Required According to 1992 DOE Stormwater Management Manual for the Puget Sound Basins is 6mo. 24 hour storm volume. According to StormShed Hydrograph Basin K the 6mo. 24 hour Vol.= 6,454cf - 0.1482 acft C V (b-swale) provided at 2ft depth = 8000 cf is greater than 6mo. 24 hour storm so O.K. Bio-retention Cell will be 10 ft wide x 250 ft long bottom and all side 3~1 slope, and Oft deep minimum Cj Storage Volume Provided = 8000 c£ > Required Volume = 6,512 c£ Therefore is adequate. C According to StormShed the 100-year/24-hour storm event will result m peak volume of 21,226 cf - 0.4783 acft. C According to Storm Shed the peak depth for the 100 year Strom evemnt will be at elevation 330.47 ft which is 0.17 feet above the bottom of the Swale with an active volume of 456 cf. The Swale provides a volume of 14,250 cf which is greater than the active volume in the Swale. C Basin `L and M'= Minimum Stormwater Storage Volume Required According to 1992 DOE Stormwater C Management Manual for the Puget Sound Basins is 6mo. 24 hour storm volume. According to StormShed Hydrograph Basin L the 6mo. 24 hour Vol.= 8352 cf - 0.1917 acft C V (b-swale) provided at 2ft depth = 8680 cf is greater than 6mo. 24 hour storm so O.K. Bio-retention Cell will be 25 ft wide x 140 ft long bottom and all sides 3~1 slope, and Oft deep minimum C Storage Volume Provided = 8680 c£ > Required Volume = 8680 cf. Therefore is adequate. According to StormShed the 100-year/24-hour storm event will result in peak volume of 31,272 C In U n ~ cf - 0.7179 acft. ~1 n According to Storm Shed the peak depth for the 100 year strom evemnt will be at elevation ~ 327.98 ft which is 0.18 feet above the bottom of the Swale with an active volume of 646 cf. ~ The Swale provides a volume of 13.020 cf which is greater than the active volume in the Swale. ~ Basin `N'~ V Minimum Stormwater Storage Volume Required According to 1992 DOE Stormwater ~, Management Manual for the Puget Sound Basins is 6mo. 24 hour storm volume. According to StormShed Hydrograph Basin N the 6mo. 24 hour Vol.= 2,338cf - 0.0537 acft V (b-swale) provided at 2ft depth = 4,000 cf is greater than 6mo. 24 hour storm so O.K. C Bio-retention Cell will be 8 ft wide x 125 ft long bottom and all side 3~1 slopes withs, and Oft deep minimum. Storage Volume Provided = 4000cf. > Required Volume = 2338 c£ Therefore is adequate. C According to StormShed the 100-year/24-hour storm event will result in peak volume of 8274 cf - 0.1899 acft. According to Storm Shed the peak depth for the 100 year Strom evemnt will be at elevation C 332.82 ft which is 0.62 feet above the bottom of the Swale with an active volume of 7 7 5 cf. The Swale provides a volume of 6,375 cf which is greater than the active volume in the Swale. C Basin `0'= Minimum Stormwater Storage Volume Required According to 1992 DOE Stormwater Management Manual for the Puget Sound Basins is 6mo. 24 hour storm volume. According to StormShed Hydrograph Basin O the 6mo. 24 hour Vol.= 4,565 cf - 0.1048 acft V (b-swale) provided at 2ft depth = 6,400 cf is greater than 6mo. 24 hour storm so O.K. Bio-retention Cell will be 10 ft wide x 200ft long bottom and all side 3~1 slope, and Oft deep minimun (option #3). Storage Volume Provided = 6400 c£ > Required Volume = 4,565 c£ Therefore is adequate. According to StormShed the 100-year/24-hour storm event will result in peak volume of 16,808 cf - 0.3859 acft. According to Storm Shed the peak depth for the 100 year Strom evemnt will be at elevation 330.93ft which is 0..13 feet above the bottom of the Swale with an active volume of 273cf. 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