DRAINAGE REPORT FOR. Creeks Crossing

Transcription

1 DRAINAGE REPORT FOR Creeks Crossing LOCATED AT: Galloway Road North Lakeland, Florida PREPARED FOR: Southern Homes/LM Properties OWNER: Heritage Investments of Polk, LLC PREPARED BY: SUBMITTED TO: Polk County SWFWMD PRINTED COPIES OF THIS DOCUMENT ARE NOT CONSIDERED SIGNED AND SEALED AND THE SHA-1 AUTHENTICATION CODE MUST BE VERIFIED ON ANY ELECTRONIC COPIES. THIS ITEM HAS BEEN ELECTRONICALLY SIGNED AND SEALED BY SANTOS MEDINA III, PE ON 06/30/16 USING A SHA-1 AUTHENTICATION CODE. Submitted: June 30, 2016 Santos Medina III, P.E. FL Reg #74539 FL CA #26247 Date

2 TABLE OF CONTENTS STORMWATER MANAGEMENT DESIGN SUMMARY...Chapter 1 Narrative References and Resources Floodplain Model Input Parameters Drainage Design Methodology Erosion Control Measures Operation and Maintenance Utilities EXHIBITS...Chapter 2 Map A Vicinity Map B USGS Quad Map C Site Map D Soils Map E Aerial Map F FEMA FIRM Map G Pre Development Basin Map Map H Post Development Basin Map SCS Data...Chapter 3 Curve Numbers WATER QUALITY...Chapter 4 Pond 100 WATER QUANTITY & FLOOD ROUTING...Chapter 5 ICPR Flood Routing STORM SEWER DESIGN...Chapter 6 SWALE DESIGN...Chapter 7 GEOTECH REPORT... Appendix A

3 CHAPTER 1 Stormwater Management Design Summary

4 Narrative Southern Homes is proposing a 45 lot residential development with stormwater improvements in Polk County, FL in Section 03, Township 28 S, Range 23 E. The project s parcel id numbers are & Pickett Engineering, Inc. (PEI) has been retained to obtain a Level 2 Construction Permit from Polk County and a SWFWMD ERP for construction of a Stormwater Management system. This report contains the drainage design that supports the proposed improvements associated with the project. The system is designed to meet the rules and regulations concerning water quality and quantity as set forth by Polk County and the SWFWMD. The site is not part of an existing permit. The enclosed report provides detailed engineering calculations to aid the construction plans. Stormwater runoff of the impervious and pervious areas will be conveyed to one wet detention pond (Pond 100) for water quality and attenuation. References and Resources The following references and resources were used for this design: SWFWMD Applicant Handbook, Part III & IV State of Florida Department of Transportation Drainage Manual Polk County Land Development Code TR-55 Urban Hydrology for Small Watersheds Interconnected Channel and Pond Routing (ICPR) v3.10 with Perc Pack Floodplain According to the new FEMA Flood Zone Maps produced by Fema & Polk County, the site is not located within a 100-year flood zone.

5 Model Input Parameters Groundwater Conditions The seasonal high water table elevations used in the storm water calculations were determined from soil boring data performed on site by Imperial Testing Laboratories, INC, located in Appendix A. The SHWT over the site was found to range from 5.0 inches to 18 inches below existing grade. Time of Concentration/Curve Numbers Composite curve numbers were created using procedures set forth in the TR-55 manual. Soil conditions were analyzed using the included Geotechnical Report, site observations, and the USDA web soil survey. Per the FDOT Drainage Manual, a minimum time of concentration of 10 minutes was used for either post development or pre development. See Chapter 3 for detailed Curve Number and Time of Concentration calculations. Drainage Basins The post-development drainage basins for the site were determined using the proposed grading and drainage plan. Pre-development basins were determined using 1-foot topographic survey information for the subject property. See Chapter 2 for detailed Basin Maps. Drainage Design Methodology Water Quality One hundred percent of all post development storm water runoff will be captured and treated in the wet retention Pond 100. A water treatment analysis was performed for the proposed impervious areas. See Chapter 4 for the water quality treatment volume model and more details. Water Quantity The 100 year/24 hour and the 25 year/24 hour design storm events were used to model the flood routing in accordance with SWFWMD and Polk County requirements. The post-development discharge rates and volume rates will be less than that of the pre-development; therefore, no off-site impacts will occur due to the proposed development. The project is located within an open basin. See Chapter 5 for the water quantity and flood routing model.

6 Storm Sewer The storm sewer system was designed utilizing a minimum diameter of 15 inches and a maximum diameter of 30 inches while setting pipe slopes at minimum grades to maintain reasonable velocities. The inlets and pipes will capture all storm water runoff on our site. The pipe capacity at minimum slopes exceeds the maximum inflows of the design storm. Please see Chapter 6 for more details. Erosion Control Measures All vegetative cover will be placed as soon as possible on all exposed land. These areas will be stabilized before any pause of construction. Silt fences will be installed along the perimeter of the project area to protect against adverse water quality impact during construction. Operation and Maintenance The developer will operate and maintain the stormwater management facilities as designed by the engineer. They will have the grassed areas mowed as necessary. Any debris or trash accumulated in the pond will be collected and disposed of properly. All SWM structures will be routinely inspected for accumulation of trash and sediments and be cleaned as required. Erosion in the ponds will be restored to the original condition promptly. Utilities Potable water will be provided by the City of Lakeland Water Department. No centralized sanitary sewer is located adjacent to the project; therefore, the proposed lots will use a septic tank and drain field.

7 CHAPTER 2 Exhibits

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17 LEGEND GREEN TEXT BLUE TEXT RED TEXT NODE NAME BASIN NAME LINK NAME NODE LINE BASIN LINE LINK LINE 0' NORTH SCALE: 1" = 150' 75' 150' DESIGNED BY: CB DRAWN BY: DH CHECKED BY: SM NO. DATE APPROVED DESCRIPTION S-106 P-104 S-100 S-100 S-102 S-106 S-112 P-116 S-107 P-114 S-113 S-106 P-117 P-115 S-110 S-110 S-108 S-108 P-112 P-113 Pickett 150 SOUTH WOODLAWN AVENUE, BARTOW, FL PHONE: (863) FAX: (863) FLORIDA CERTIFICATE OF AUTHORIZATION (FLCA) #26247 S-101 P-105 S-101 S-103 S-103 P-105(1) P-109 P-110 P-111 S-104 S-104 S-105 POND 200 BASIN 200 S-109 P-107 S-111 SOUTHERN HOLDINGS OF POLK COUNTY, LLC CLIENT: S-109 CREEKS CROSSING PROJECT: BASIN 100 POND 100 PROJECT NO. POST DEVELOPMENT 1BASIN MAP SHEET 0 N GALLOWAY RD, LAKELAND FLORIDA OF 1

18 CHAPTER 3 SCS DATA

19 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: A B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 0.00% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

20 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: 100 (Overall) B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 28.65% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

21 CHAPTER 4 Water Quality

22 POND 100

23 Treatment Volumes - SWFWMD Creeks Crossing, PEI Job #1422 Basin Treatment Type Basin Area (ac) Treatment Volume (ac-ft) per Nutrient Loading WMD Basin Criteria OFW? Req'd Vol (ac-ft) Req'd Vol (cf) 100 (Overall) Wet Detention ,229 SWFWMD Basin Criteria Wet Detention Effluent Filtration Exfiltration On-line Retention Off-line Retention 1 " over basin 0.5 " over basin 0.5 " over basin 0.5 " over basin 0.5 " over basin Discharge to Outstanding Florida Waters: Treat 50% more than WMD basin criteria.

24 Retention Stage-Storage & Treatment Elevation Creeks Crossing, PEI Job #1422 Pond: 100 (Overall) Elevation Area (ft 2 ) Area (ac) Top , Control , STAGE DEPTH VOLUME VOLUME (ft) (ft) (ft 3 ) (ac-ft) , , , , , , , , , , , , , , , , , , , , , , , , , , , , ft 3 ac-ft Req. Treatment Vol: 95, Min Req. Treatment Elev: ft ft 3 ac-ft Provided Treatment Vol: 238, Weir Design Elev: ft Notes:

25 Pond: 100 A: Pool Volume Required Drainage area (A): ac Runoff coef (C): 0.59 Wet season rainfall depth (D): 31 in Length of wet season (WS): 121 days Residence time (R): 14 days PPV req = (A)(C)(D)(R) (WS)(12 in/ft) PPV req = ac-ft B: Pool Volume Provided Control elevation: control elevation: ft ac Littoral shelf elevation: littoral shelf: ft ac Stage 1: Bottom elevation: bottom: ac ft ac PPV provided = ac-ft Perm Pool Vol

26 A. SITE INFORMATION Site Ac. = Acres 22,220 = the minimum littoral shelf DER Elev. = Feet DER Area = 157,377 Sq. Ft. area in square feet. NWL = Feet NWL Area = 151,121 Sq. Ft. Runoff = 1.0 Inches (OFW?) 96,251 Cu.Ft. of treatent volume Head (h) = 0.49 Feet h = DER Elev. - (NWL + ½d) Required Volume = 95,229 Cu.Ft. or 2.19 Ac.Ft. B. VERTICAL CIRCULAR ORIFICE FLOW Q = C a (2 g h) ½ Diameter (d) = Orifice Area (a) = C Value = ½ Vol.Time = Total Time = 3.25 Inches Sq.Ft Coefficient of discharge Hours Hours Head Increm. Total Flow Delta Delta Cum. Elevation h (Ft.) h (Ft.) Q Q Avg. Volume Hours Hours sqrt(2 g h) , , , , , , , , , , , , , , , ,

27 , , , , , , , , , , , , , , , , , , , , , , , , ,400 C. 36 HOUR BLEEDDOWN CALCULATIONS Side Slopes = 4.0 TO 1 Centerline Surface Area DER = 157,377 SQ. FT. Orifice Treatment Surface Area NWL = 151,121 SQ. FT. Elevation Volume ,251

28 CHAPTER 5 Water Quantity & Flood Routing

29 Nodes A Stage/Area V Stage/Volume T Time/Stage M Manhole Basins O Overland Flow U SCS Unit CN S SBUH CN Y SCS Unit GA Z SBUH GA Links P Pipe W Weir C Channel D Drop Structure B Bridge R Rating Curve H Breach E Percolation F Filter X Exfil Trench T:A U:A A:100 U:100 W:O-100 W:W-100 T:OFFSITE Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc.

30 Max Warning Max Delta Max Surf Max Max Name Simulation Stage Stage Stage Area Inflow Outflow ft ft ft ft2 cfs cfs yr24hr yr24hr A 25yr24hr OFFSITE 25yr24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

31 Simulation Node Group Time Stage Warning Surface Total Total Total Total Stage Area Inflow Outflow Vol In Vol Out hrs ft ft ft2 cfs cfs af af 25yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 4

32 Simulation Node Group Time Stage Warning Surface Total Total Total Total Stage Area Inflow Outflow Vol In Vol Out hrs ft ft ft2 cfs cfs af af 25yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr A BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 2 of 4

33 Simulation Node Group Time Stage Warning Surface Total Total Total Total Stage Area Inflow Outflow Vol In Vol Out hrs ft ft ft2 cfs cfs af af 25yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 3 of 4

34 Simulation Node Group Time Stage Warning Surface Total Total Total Total Stage Area Inflow Outflow Vol In Vol Out hrs ft ft ft2 cfs cfs af af 25yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE yr24hr OFFSITE BASE Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 4 of 4

35 ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: 100 Node: 100 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: A Node: A Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 ========================================================================================== ==== Nodes =============================================================================== ========================================================================================== Name: 100 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: A Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage Time(hrs) Stage(ft) Name: OFFSITE Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage Time(hrs) Stage(ft) ========================================================================================== ==== Weirs =============================================================================== ========================================================================================== Name: O-100 From Node: 100 Group: BASE To Node: OFFSITE Flow: Both Count: 1 Type: Vertical: Mavis Geometry: Circular Span(in): 3.25 Rise(in): 3.25 Invert(ft): Control Elevation(ft): Bottom Clip(in): Top Clip(in): Weir Discharge Coef: Orifice Discharge Coef: TABLE Name: W-100 From Node: 100 Group: BASE To Node: OFFSITE Flow: Both Count: 1 Type: Vertical: Mavis Geometry: Trapezoidal Bottom Width(ft): 6.00 Left Side Slope(h/v): 4.00 Right Side Slope(h/v): 4.00 Invert(ft): Control Elevation(ft): Struct Opening Dim(ft): Bottom Clip(ft): Top Clip(ft): TABLE Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 2

36 Weir Discharge Coef: Orifice Discharge Coef: ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 100yr24hr Filename: X:\Engineering\PEI Standards\ICPR\100yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): Time(hrs) Print Inc(min) Name: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 7.00 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 100yr24hr Hydrology Sim: 100yr24hr Filename: X:\Engineering\PEI Standards\ICPR\100yr24hr.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Name: 25yr24hr Hydrology Sim: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 2 of 2

37 CHAPTER 6 Storm Sewer Design

38 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-100 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 69.77% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

39 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-101 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 74.36% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

40 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-103 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 69.61% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

41 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-104 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 69.19% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

42 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-106 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 20.92% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

43 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-108 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 41.67% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

44 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-109 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 61.52% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

45 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: S-110 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 43.37% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

46 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: 200 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 22.58% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

47 Nodes A Stage/Area V Stage/Volume T Time/Stage M Manhole Basins O Overland Flow U SCS Unit CN S SBUH CN Y SCS Unit GA Z SBUH GA P: P-104 A: S-100 U: S-100 A: S-101 A: S-110 U: S-110 A: S-106 U: S-106 P: P-114 Links P Pipe W Weir C Channel D Drop Structure B Bridge R Rating Curve H Breach E Percolation F Filter X Exfil Trench P: P-105 P:P-105 (1) U: S-101 A: S-102 P: P-112 A: S-108 U: S-108 A: S-107 P: P-115 A: S-103 P: P-109 U: S-103 P: P-113 A: S-104 U: S-104 A: S-109 P: P-110 U: S-109 A:200 U:200 P: P-107 W: W-200 T: S-111 T:100 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc.

48 Max Warning Max Delta Max Surf Max Max Name Simulation Stage Stage Stage Area Inflow Outflow ft ft ft ft2 cfs cfs yr24hr S yr24hr S yr24hr S yr24hr S yr24hr S yr24hr S yr24hr S yr24hr S yr24hr S yr24hr S yr24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

49 ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: 200 Node: 200 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: S-100 Node: S-100 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: S-101 Node: S-101 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: S-103 Node: S-103 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: S-104 Node: S-104 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: S-106 Node: S-106 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: S-108 Node: S-108 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): Name: S-109 Node: S-109 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 6

50 Name: S-110 Node: S-110 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 ========================================================================================== ==== Nodes =============================================================================== ========================================================================================== Name: 100 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage We used a tailwater condition of '. We feel this is conservative as it represents the top of Pond 100. Time(hrs) Stage(ft) Name: 200 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-100 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-101 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-102 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-103 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-104 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-106 Base Flow(cfs): Init Stage(ft): Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 2 of 6

51 Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-107 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-108 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-109 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-110 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: S-111 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage The tailwater elevation of ' represent the top of the discharge swale leading to Pond 100. Time(hrs) Stage(ft) ========================================================================================== ==== Pipes =============================================================================== ========================================================================================== Name: P-104 From Node: S-100 Length(ft): Group: BASE To Node: S-101 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-105 From Node: S-101 Length(ft): Group: BASE To Node: S-102 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 3 of 6

52 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-105 (1) From Node: S-102 Length(ft): Group: BASE To Node: S-103 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-107 From Node: S-109 Length(ft): Group: BASE To Node: S-111 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-109 From Node: S-103 Length(ft): Group: BASE To Node: S-104 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-110 From Node: S-104 Length(ft): Group: BASE To Node: 200 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 4 of 6

53 Name: P-112 From Node: S-110 Length(ft): Group: BASE To Node: S-108 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-113 From Node: S-108 Length(ft): Group: BASE To Node: S-109 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-114 From Node: S-106 Length(ft): Group: BASE To Node: S-107 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: P-115 From Node: S-107 Length(ft): Group: BASE To Node: S-108 Count: 1 Friction Equation: Automatic UPSTREAM DOWNSTREAM Solution Algorithm: Most Restrictive Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 1.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dc Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall ========================================================================================== ==== Weirs =============================================================================== ========================================================================================== Name: W-200 From Node: 200 Group: BASE To Node: 100 Flow: Both Count: 1 Type: Vertical: Mavis Geometry: Trapezoidal Bottom Width(ft): 2.00 Left Side Slope(h/v): 4.00 Right Side Slope(h/v): 4.00 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 5 of 6

54 Invert(ft): Control Elevation(ft): Struct Opening Dim(ft): Bottom Clip(ft): Top Clip(ft): Weir Discharge Coef: Orifice Discharge Coef: TABLE ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 100yr24hr Filename: X:\Engineering\PEI Standards\ICPR\100yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): Time(hrs) Print Inc(min) Name: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 7.00 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 100yr24hr Hydrology Sim: 100yr24hr Filename: X:\Engineering\PEI Standards\ICPR\100yr24hr.I32 Execute: No Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Name: 25yr24hr Hydrology Sim: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 6 of 6

55 CHAPTER 7 Swale Design

56 < < < < < < < < < < < < < < < < < < < < < SWALE 300 SWALE 300 BASIN < < < < < < < < < < < < < < < SWALE 400 SWALE 400 BASIN AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE GREEN TEXT BLUE TEXT RED TEXT AWE AWE LEGEND AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE AWE SWALE 200 BASIN AWE < < NODE NAME BASIN NAME LINK NAME NODE LINE BASIN LINE LINK LINE 0' NORTH SCALE: 1" = 150' 75' 150' NO. DATE APPROVED DESCRIPTION DESIGNED BY: CB DRAWN BY: DH Pickett CHECKED BY: SM 150 SOUTH WOODLAWN AVENUE, BARTOW, FL PHONE: (863) FAX: (863) FLORIDA CERTIFICATE OF AUTHORIZATION (FLCA) #26247 SWALE 200 < < < < < < < < SWALE 100 BASIN SWALE 100 < < < < < < < < SOUTHERN HOLDINGS OF POLK COUNTY, LLC CLIENT: CREEKS CROSSING PROJECT: PROJECT NO. POST DEVELOPMENT 1SWALE BASIN MAP SHEET 0 N GALLOWAY RD, LAKELAND FLORIDA < < 1422 OF 1

57 SWALE 100

58 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: SWALE 100 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 24.94% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

59 Nodes A Stage/Area V Stage/Volume T Time/Stage M Manhole Basins O Overland Flow U SCS Unit CN S SBUH CN Y SCS Unit GA Z SBUH GA Links P Pipe W Weir C Channel D Drop Structure B Bridge R Rating Curve H Breach E Percolation F Filter X Exfil Trench T:Swale 100 U:Swale 100 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc.

60 Max Warning Max Delta Max Surf Max Max Name Simulation Stage Stage Stage Area Inflow Outflow ft ft ft ft2 cfs cfs Swale yr24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

61 ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: Swale 100 Node: Swale 100 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 ========================================================================================== ==== Nodes =============================================================================== ========================================================================================== Name: Swale 100 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage Time(hrs) Stage(ft) ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 7.00 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 25yr24hr Hydrology Sim: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

62 Creeks Crossing SWALE 100 JOB #1422 A. Contributing Offsite Basin: SWALE 100 B. Total Drainage Basin Area: C. CN: 54 D. Peak Runoff from Hydrograph: Pw = 2d/sin(θ) a = 0.5(d)(Wt) V = (1.486/n)(r^0.67)(S^0.5) Q = Va r = a/pw Triangular Open Channel Flow Manning's n-value n = 0.05 Side slope (H:V) s = 4 :1 Depth of flow d = 1 ft Slope of channel Sc = ft/ft Theta θ = rad Top width Wt = 8 ft Cross section area a = 4.00 sf Wetted perimeter Pw = 8.25 ft Hydraulic radius r = 0.49 ft Velocity V= 1.07 ft/s Flow Rate Q = 4.28 cfs * Design swale flow rate (Q) > Peak Runoff Full Swale Design

63 SWALE 200

64 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: SWALE 200 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 11.21% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

65 Nodes A Stage/Area V Stage/Volume T Time/Stage M Manhole Basins O Overland Flow U SCS Unit CN S SBUH CN Y SCS Unit GA Z SBUH GA Links P Pipe W Weir C Channel D Drop Structure B Bridge R Rating Curve H Breach E Percolation F Filter X Exfil Trench T:Swale 200 U:Swale 200 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc.

66 Max Warning Max Delta Max Surf Max Max Name Simulation Stage Stage Stage Area Inflow Outflow ft ft ft ft2 cfs cfs Swale yr24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

67 ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: Swale 200 Node: Swale 200 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 ========================================================================================== ==== Nodes =============================================================================== ========================================================================================== Name: Swale 200 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage Time(hrs) Stage(ft) ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 7.00 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 25yr24hr Hydrology Sim: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

68 Creeks Crossing SWALE 200 JOB #1422 A. Contributing Offsite Basin: SWALE 200 B. Total Drainage Basin Area: C. CN: 82 D. Peak Runoff from Hydrograph: Pw = 2d/sin(θ) a = 0.5(d)(Wt) V = (1.486/n)(r^0.67)(S^0.5) Q = Va r = a/pw Triangular Open Channel Flow Manning's n-value n = 0.05 Side slope (H:V) s = 4 :1 Depth of flow d = 0.75 ft Slope of channel Sc = ft/ft Theta θ = rad Top width Wt = 6 ft Cross section area a = 2.25 sf Wetted perimeter Pw = 6.18 ft Hydraulic radius r = 0.36 ft Velocity V= 2.44 ft/s Flow Rate Q = 5.49 cfs * Design swale flow rate (Q) > Peak Runoff Full Swale Design

69 SWALE 300

70 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: SWALE 300 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 28.16% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

71 Nodes A Stage/Area V Stage/Volume T Time/Stage M Manhole Basins O Overland Flow U SCS Unit CN S SBUH CN Y SCS Unit GA Z SBUH GA Links P Pipe W Weir C Channel D Drop Structure B Bridge R Rating Curve H Breach E Percolation F Filter X Exfil Trench T:Swale 300 U:Swale 300 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc.

72 Max Warning Max Delta Max Surf Max Max Name Simulation Stage Stage Stage Area Inflow Outflow ft ft ft ft2 cfs cfs Swale yr24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

73 ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: Swale 300 Node: Swale 300 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 ========================================================================================== ==== Nodes =============================================================================== ========================================================================================== Name: Swale 300 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage Time(hrs) Stage(ft) ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 7.00 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 25yr24hr Hydrology Sim: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

74 Creeks Crossing SWALE 300 JOB #1422 A. Contributing Offsite Basin: SWALE 300 B. Total Drainage Basin Area: C. CN: 61 D. Peak Runoff from Hydrograph: Pw = 2d/sin(θ) a = 0.5(d)(Wt) V = (1.486/n)(r^0.67)(S^0.5) Q = Va r = a/pw Triangular Open Channel Flow Manning's n-value n = 0.05 Side slope (H:V) s = 4 :1 Depth of flow d = 1 ft Slope of channel Sc = ft/ft Theta θ = rad Top width Wt = 8 ft Cross section area a = 4.00 sf Wetted perimeter Pw = 8.25 ft Hydraulic radius r = 0.49 ft Velocity V= 1.12 ft/s Flow Rate Q = 4.46 cfs * Design swale flow rate (Q) > Peak Runoff Full Swale Design

75 SWALE 400

76 Curve Number Calculation Creeks Crossing, PEI Job #1422 A. Basin: SWALE 400 B. Total Area (ac): C. Curve Number: Cover Type Condition Soil Group CN Area Product Pervious Areas OpenSpace Good A OpenSpace Good D Impervious Areas Impervious Stormwater TOB A Impervious Building/Misc. A Impervious Pavement/Conc. A Total impervious area (excluding pond TOB) = Total contributing area (excluding pond TOB) = % DCIA for contributing area = 19.90% Sum: Weighted Curve Number: = Notes: * All information is referenced from TR-55, Urban Hydrology for Small Watersheds, Second Edition, June Poor condition (cover <50% or heavily grazed) 2 Fair condition (cover 50% to 75% or not heavily grazed) 3 Good condition (cover >75% or lightly grazed) 4 Roadway cover types include right-of-way 5 Open Space cover types include lawns, parks, golf courses, etc. 6 Pasture cover types include grasslands or ranges

77 Nodes A Stage/Area V Stage/Volume T Time/Stage M Manhole Basins O Overland Flow U SCS Unit CN S SBUH CN Y SCS Unit GA Z SBUH GA Links P Pipe W Weir C Channel D Drop Structure B Bridge R Rating Curve H Breach E Percolation F Filter X Exfil Trench T:Swale 400 U:Swale 400 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc.

78 Max Warning Max Delta Max Surf Max Max Name Simulation Stage Stage Stage Area Inflow Outflow ft ft ft ft2 cfs cfs Swale yr24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

79 ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: Swale 400 Node: Swale 400 Status: Onsite Group: BASE Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh256 Peaking Factor: Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): Time of Conc(min): Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 ========================================================================================== ==== Nodes =============================================================================== ========================================================================================== Name: Swale 400 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Time/Stage Time(hrs) Stage(ft) ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 7.00 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 25yr24hr Hydrology Sim: 25yr24hr Filename: X:\Engineering\PEI Standards\ICPR\25yr24hr.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: Time Step Optimizer: Start Time(hrs): End Time(hrs): Min Calc Time(sec): Max Calc Time(sec): Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) Group Run BASE Yes Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

80 Creeks Crossing SWALE 400 JOB #1422 A. Contributing Offsite Basin: SWALE 400 B. Total Drainage Basin Area: C. CN: 62 D. Peak Runoff from Hydrograph: Pw = 2d/sin(θ) a = 0.5(d)(Wt) V = (1.486/n)(r^0.67)(S^0.5) Q = Va r = a/pw Triangular Open Channel Flow Manning's n-value n = 0.05 Side slope (H:V) s = 4 :1 Depth of flow d = 1 ft Slope of channel Sc = ft/ft Theta θ = rad Top width Wt = 8 ft Cross section area a = 4.00 sf Wetted perimeter Pw = 8.25 ft Hydraulic radius r = 0.49 ft Velocity V= 1.55 ft/s Flow Rate Q = 6.18 cfs * Design swale flow rate (Q) > Peak Runoff Full Swale Design

81 APPENDIX A Geotech Report

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