REPORT FOR: ISLAND LAKE ESTATES 4275 Placida Road Englewood, FL 34224

Transcription

1 REPORT FOR: ISLAND LAKE ESTATES 4275 Placida Road Englewood, FL OWNER/APPLICANT: Edgewater Opportunity Fund II Contact: Ronald S Greenland 300 East Bay Heights Road Englewood, FL SUBMITTED TO: Southwest Florida Water Management District (via e-permitting) 6750 Fruitville Road Sarasota, FL JOB NUMBER: 3891 DATE: January 29, 2015 PREPARED BY: PROFESSIONAL ENGINEERS, PLANNERS, & LAND SURVEYORS SW COUNTY RD. 769, SUITE B, LAKE SUZY, FL PHONE :(941) FAX: (941)

2 Ronald M. Hay Jr., P.E. Florida Professional Engineer No Date: 01/29/15 REPORT FOR: ISLAND LAKE ESTATES 4275 Placida Road Englewood, FL OWNER/APPLICANT: Edgewater Opportunity Fund II Contact: Ronald S Greenland 300 East Bay Heights Road Englewood, FL SUBMITTED TO: Southwest Florida Water Management District (via e-permitting) 6750 Fruitville Road Sarasota, FL JOB NUMBER: 3891 DATE: January 29, 2015

3 TABLE OF CONTENTS SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 GENERAL SITE INFORMATION WATER QUALITY WATER QUANTITY FLOODPLAIN ANALYSIS POST DEVELOPMENT ICPR ROUTINGS Post-Development Nodal Diagram Node Maximum Conditions Summary Input Report Curve Number Spreadsheets EXHIBITS Soils FIRM Panels Quad Sheets

4 SECTION 1 GENERAL SITE INFORMATION

5 GENERAL SITE INFORMATION 1.1 PROJECT LOCATION The Island Lake Estates is a proposed residential community located in Section 16, Township 41 South, and Range 20 East in Charlotte County, Florida. The Tax Parcel Identification for this project is The total area owned for this project amounts to 170 acres, more or less, with approximately 155 acres designated as drainage basin area for the purposes of stormwater calculations. 1.2 PRE-DEVELOPMENT DRAINAGE This project site has been previously permitted in the past. On June 23, 1992 MSSW was issued to Steak & Stone and has since expired. Ajax Paving Industries also obtained WUP 9283, that permit has since been cancelled/inactive. Under MSSW , stormwater pond construction was started. Some of those ponds were permitted with 100yr retention in mind. It also appears that there may have been mining operations on the site prior to construction of MSSW starting. Currently with a portion of the site being excavated and filled under MSSW , the majority of the site flows to the north and northwest with a final destination being Oyster Creek. 1.3 POST-DEVELOPMENT DRAINAGE The proposed project will use a system of drainage collection and conveyance to transport the onsite flows to the proposed stormwater ponds. These onsite stormwater ponds will all be designed to contain the 100yr storm. 1.4 SOILS Based on a review of the National Resources Conservation Service (NRCS) soil survey, the existing site contains 14.9 acres of Myakka Fine Sand, 4 acres of Felda Fine Sand, 46.2 acres of Immokalee Sand, 60.3 acres of Punta Fine Sand, 1.9 acres of Anclote Sand and 4.8 acres of Smyrna Fine Sand, HSG Type B/D. For additional information regarding soil types, please refer to the attached site soils exhibit. 1.5 WATER TABLE The estimated water table for each of the stormwater basins has been based on wetland indicators determined by Earthbalance Environmental firm. Please see plan set for any additional information related to estimated water tables. 1.6 RECEIVING WATERBODY This project proposes to retain all storm events up to and including the 100yr storm. Once the project has reached the 100yr storm event it will be routed to the slough that runs along the eastern boundary of the property. Once in the slough, the water will be received in Oyster Creek (WBID 2067) and Buck Creek (WBID 2068) with final destination of Lemon Bay (WBID 2072). REVISED: 1/29/ _SWM_RPT.DOCX Island Lakes Estates JOB: 3891

6 1.7 EXISTING LAND USE AND COVER Currently the site is undeveloped other than a few of the stormwater ponds that were constructed under MSSW The current land cover is a mixture of upland forest, wetlands, and water. The majority of the site however is covered with upland forest. 1.8 PROPOSED LAND USE AND COVER The proposed project is to develop approximately 170 ac into a residential development. This development will include 294 single family residences along with 106 multi-family units. The project will be served by acres of roads throughout the development. Along with the roads, approximately 42 acres will be dedicated to pervious surfaces. The project will also include 8 lakes equaling approximately 51 acres for 100yr retention acres of wetlands encroach on to the property in the north. REVISED: 1/29/ _SWM_RPT.DOCX Island Lakes Estates JOB: 3891

7 SECTION 2 WATER QUALITY

8 WATER QUALITY 2.1 TREATMENT METHODOLOGY The Southwest Florida Water Management District (SWFWMD) requires that wet detention systems treat one inch of runoff from the entire contributing area to the system (stormwater basin area), in accordance with B.O.R. 5.2 (a)(1). Dry detention systems, both on-line and offline, require that projects greater than 100 acres in size shall treat the runoff from the first one inch of runoff, and as an option for projects less than 100 acres, the first half inch of runoff over the stormwater basin area per B.O.R. 5.2.(c) and (d). The wet detention system's treatment volume shall be discharged in no less than 120 hours (5 days) with no more than one-half the total volume being discharged within the first 60 hours (2.5 days). Due to the detention time required for wet detention systems, only that volume which drains below the overflow elevation within 36 hours may be counted as part of the volume required for water quantity storage under Chapter 4. The total treatment volume shall again be available within 72 hours, however, only that volume which can again be available within 36 hours may be counted as part of the volume required for water quantity storage under Chapter 4. Any project which discharges directly to an Outstanding Florida Water (OFW) shall provide a treatment volume equivalent to an additional 50% of the above criteria. 2.2 IMPAIRED WATERBODY CLASSIFICATION This project is located within the Lemon Bay basin, with corresponding waterbody identification (WBID) Based on a review of the published data from the Florida Department of Environmental Protection (FDEP Run Number 49), this project is classified as an impaired water body for mercury and dissolved oxygen. 2.3 WATERBODY CLASS Based on a review of published data from the Florida Department of Environmental Protection (FDEP), the ultimate discharge location for this project, Charlotte Harbor, is classified as a class 3M water body. It should be noted that this project does not discharge directly to a waterbody classified as a conditionally restricted or Outstanding Florida Water (OFW). 2.4 PROPOSED STORMWATER SYSTEM The proposed stormwater management system will consist of a series of lakes and structures to provide water quality and quantity for the proposed site. These lakes and structures will make up three different basins of varying control elevations. While the site consists of three different basins, of varying control elevations, they all fall within a tidal flood zone with an elevation of 11 NGVD 88. In order to effectively provide the necessary treatment needed for the site and the surrounding waterbodies, 100yr retention will be utilized. REVISED: 1/29/ _SWM_RPT.DOCX Island Lakes Estates JOB: 3891

9 SECTION 3 WATER QUANTITY

10 WATER QUANTITY 3.1 DESIGN CRITERIA The site proposes to attenuate the 100yr storm event. All the necessary storage for will be held within the lake system proposed on site. REVISED: 1/29/ _SWM_RPT.DOCX Island Lakes Estates JOB: 3891

11 SECTION 4 FLOODPLAIN ANALYSIS

12 FLOODPLAIN ANALYSIS 4.1 FLOODPLAIN LOCATION Based on a review of the Federal Emergency Management Agency (FEMA) published floodplain data, this project is located within the boundary of FEMA Panel No C0187F and 12015C0189F dated May 5, This project is located within flood zone AE. AE areas located within zone AE are within the floodplain, with an established flood elevation of TRAVERSING WORKS There are no traversing works proposed. 4.3 FLOODPLAIN IMPACTS The entire site proposes to attenuate the 100yr storm event, therefore eliminating any possible impact to the 100yr floodplain. REVISED: 1/29/ _SWM_RPT.DOCX Island Lakes Estates JOB: 3891

13 SECTION 5 POST DEVELOPMENT ICPR ROUTINGS

14 Network Diagram Nodes A Stage/Area V Stage/Volume T Time/Stage M Manhole A:Basin 3C U:Basin 3C 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 A:Basin 1D U:Basin 1D P:RCP_3 P:RCP A:Basin 3B U:Basin 3B P:RCP_2 A:Basin 3A U:Basin 3A A:Basin 2 A:Basin 1C U:Basin 2 U:Basin 1C P:RCP_4 A:Basin 1B U:Basin 1B P:RCP_5 A:Basin 1A U:Basin 1A Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc.

15 Node Min/Max Max Time Max Warning Max Delta Max Surf Max Time Max Max Time Max Name Group Simulation Stage Stage Stage Stage Area Inflow Inflow Outflow Outflow hrs ft ft ft ft2 hrs cfs hrs cfs Basin 1A BASE 100yr-24hr Basin 1B BASE 100yr-24hr Basin 1C BASE 100yr-24hr Basin 1D BASE 100yr-24hr Basin 2 BASE 100yr-24hr Basin 3A BASE 100yr-24hr Basin 3B BASE 100yr-24hr Basin 3C BASE 100yr-24hr Basin 1A BASE 25yr-24hr Basin 1B BASE 25yr-24hr Basin 1C BASE 25yr-24hr Basin 1D BASE 25yr-24hr Basin 2 BASE 25yr-24hr Basin 3A BASE 25yr-24hr Basin 3B BASE 25yr-24hr Basin 3C BASE 25yr-24hr Basin 1A BASE 5yr-24hr Basin 1B BASE 5yr-24hr Basin 1C BASE 5yr-24hr Basin 1D BASE 5yr-24hr Basin 2 BASE 5yr-24hr Basin 3A BASE 5yr-24hr Basin 3B BASE 5yr-24hr Basin 3C BASE 5yr-24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

16 Node Min/Max Max Time Max Warning Max Delta Max Surf Max Time Max Max Time Max Name Group Simulation Stage Stage Stage Stage Area Inflow Inflow Outflow Outflow hrs ft ft ft ft2 hrs cfs hrs cfs Basin 1A BASE 100yr-24hr Basin 1B BASE 100yr-24hr Basin 1C BASE 100yr-24hr Basin 1D BASE 100yr-24hr Basin 2 BASE 100yr-24hr Basin 3A BASE 100yr-24hr Basin 3B BASE 100yr-24hr Basin 3C BASE 100yr-24hr Basin 1A BASE 25yr-24hr Basin 1B BASE 25yr-24hr Basin 1C BASE 25yr-24hr Basin 1D BASE 25yr-24hr Basin 2 BASE 25yr-24hr Basin 3A BASE 25yr-24hr Basin 3B BASE 25yr-24hr Basin 3C BASE 25yr-24hr Basin 1A BASE 5yr-24hr Basin 1B BASE 5yr-24hr Basin 1C BASE 5yr-24hr Basin 1D BASE 5yr-24hr Basin 2 BASE 5yr-24hr Basin 3A BASE 5yr-24hr Basin 3B BASE 5yr-24hr Basin 3C BASE 5yr-24hr Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 1

17 Input ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: Basin 1A Node: Basin 1A 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 Name: Basin 1B Node: Basin 1B 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 Name: Basin 1C Node: Basin 1C 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 Name: Basin 1D Node: Basin 1D 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 Name: Basin 2 Node: Basin 2 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 Name: Basin 3A Node: Basin 3A 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 Name: Basin 3B Node: Basin 3B 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): Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 6

18 Input Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 Name: Basin 3C Node: Basin 3C 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: Basin 1A Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 1B Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 1C Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 1D Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 2 of 6

19 Input Name: Basin 2 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 3A Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 3B Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 3C Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) ========================================================================================== ==== Pipes =============================================================================== ========================================================================================== Name: From Node: Length(ft): 0.00 Group: BASE To Node: Count: 1 Friction Equation: Average Conveyance UPSTREAM DOWNSTREAM Solution Algorithm: Automatic Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 0.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dn Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular CMP: Projecting Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 3 of 6

20 Input Downstream FHWA Inlet Edge Description: Circular CMP: Projecting Name: RCP From Node: Basin 3B Length(ft): Group: BASE To Node: Basin 3C 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: RCP_2 From Node: Basin 3A Length(ft): Group: BASE To Node: Basin 3B 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: RCP_3 From Node: Basin 1D Length(ft): Group: BASE To Node: Basin 1C 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: RCP_4 From Node: Basin 1B Length(ft): Group: BASE To Node: Basin 1C 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 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 4 of 6

21 Input Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: RCP_5 From Node: Basin 1A Length(ft): Group: BASE To Node: Basin 1B 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 ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 100yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\100yr-24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): Time(hrs) Print Inc(min) Name: 25yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\25yr-24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 8.00 Time(hrs) Print Inc(min) Name: 5yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\5yr-24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 5.70 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 100yr-24hr Hydrology Sim: 100yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\100yr-24hr.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: Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 5 of 6

22 Input Time(hrs) Print Inc(min) Group Run BASE Yes Name: 25yr-24hr Hydrology Sim: 25yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\25yr-24hr.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: 5yr-24hr Hydrology Sim: 5yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\5yr-24hr.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

23 Input ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: Basin 1A Node: Basin 1A 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 Name: Basin 1B Node: Basin 1B 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 Name: Basin 1C Node: Basin 1C 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 Name: Basin 1D Node: Basin 1D 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 Name: Basin 2 Node: Basin 2 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 Name: Basin 3A Node: Basin 3A 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 Name: Basin 3B Node: Basin 3B 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): Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 1 of 6

24 Input Area(ac): Time Shift(hrs): 0.00 Curve Number: Max Allowable Q(cfs): DCIA(%): 0.00 Name: Basin 3C Node: Basin 3C 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: Basin 1A Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 1B Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 1C Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 1D Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 2 of 6

25 Input Name: Basin 2 Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 3A Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 3B Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) Name: Basin 3C Base Flow(cfs): Init Stage(ft): Group: BASE Warn Stage(ft): Type: Stage/Area Stage(ft) Area(ac) ========================================================================================== ==== Pipes =============================================================================== ========================================================================================== Name: From Node: Length(ft): 0.00 Group: BASE To Node: Count: 1 Friction Equation: Average Conveyance UPSTREAM DOWNSTREAM Solution Algorithm: Automatic Geometry: Circular Circular Flow: Both Span(in): Entrance Loss Coef: 0.00 Rise(in): Exit Loss Coef: 0.00 Invert(ft): Bend Loss Coef: 0.00 Manning's N: Outlet Ctrl Spec: Use dc or tw Top Clip(in): Inlet Ctrl Spec: Use dn Bot Clip(in): Stabilizer Option: None Upstream FHWA Inlet Edge Description: Circular CMP: Projecting Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 3 of 6

26 Input Downstream FHWA Inlet Edge Description: Circular CMP: Projecting Name: RCP From Node: Basin 3B Length(ft): Group: BASE To Node: Basin 3C 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: RCP_2 From Node: Basin 3A Length(ft): Group: BASE To Node: Basin 3B 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: RCP_3 From Node: Basin 1D Length(ft): Group: BASE To Node: Basin 1C 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: RCP_4 From Node: Basin 1B Length(ft): Group: BASE To Node: Basin 1C 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 Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 4 of 6

27 Input Upstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Downstream FHWA Inlet Edge Description: Circular Concrete: Square edge w/ headwall Name: RCP_5 From Node: Basin 1A Length(ft): Group: BASE To Node: Basin 1B 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 ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 100yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\100yr-24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): Time(hrs) Print Inc(min) Name: 25yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\25yr-24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 8.00 Time(hrs) Print Inc(min) Name: 5yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\5yr-24hr.R32 Override Defaults: Yes Storm Duration(hrs): Rainfall File: Flmod Rainfall Amount(in): 5.70 Time(hrs) Print Inc(min) ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: 100yr-24hr Hydrology Sim: 100yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\100yr-24hr.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: Interconnected Channel and Pond Routing Model (ICPR) 2002 Streamline Technologies, Inc. Page 5 of 6

28 Input Time(hrs) Print Inc(min) Group Run BASE Yes Name: 25yr-24hr Hydrology Sim: 25yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\25yr-24hr.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: 5yr-24hr Hydrology Sim: 5yr-24hr Filename: S:\Jobs\38xx\3891\Engineering\Calculations\SWM\ICPR\5yr-24hr.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

29 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = 4.65 ac. Total Imperious Area = 1.21 ac. Impervious CN = 98 Pond/Wetland Area = 0.54 ac. Pond/Wetland CN = 100 Pervious Area (1) = 1.68 ac. Pervious CN (1) = 80 Pervious Area (2) = 1.22 ac. Pervious CN (2) = 80 Weighted Curve Number = 87.0

30 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = 6.96 ac. Total Imperious Area = 1.30 ac. Impervious CN = 98 Pond/Wetland Area = 2.64 ac. Pond/Wetland CN = 100 Pervious Area (1) = 1.77 ac. Pervious CN (1) = 80 Pervious Area (2) = 1.25 ac. Pervious CN (2) = 80 Weighted Curve Number = 91.0

31 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = ac. Total Imperious Area = 2.93 ac. Impervious CN = 98 Pond/Wetland Area = 3.12 ac. Pond/Wetland CN = 100 Pervious Area (1) = 3.77 ac. Pervious CN (1) = 80 Pervious Area (2) = 3.04 ac. Pervious CN (2) = 80 Weighted Curve Number = 89.0

32 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = ac. Total Imperious Area = 6.16 ac. Impervious CN = 98 Pond/Wetland Area = 9.92 ac. Pond/Wetland CN = 100 Pervious Area (1) = 8.37 ac. Pervious CN (1) = 80 Pervious Area (2) = 3.25 ac. Pervious CN (2) = 80 Weighted Curve Number = 91.2

33 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = ac. Total Imperious Area = 2.90 ac. Impervious CN = 98 Pond/Wetland Area = 1.68 ac. Pond/Wetland CN = 100 Pervious Area (1) = 3.44 ac. Pervious CN (1) = 80 Pervious Area (2) = 3.36 ac. Pervious CN (2) = 80 Weighted Curve Number = 87.5

34 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = ac. Total Imperious Area = 6.08 ac. Impervious CN = 98 Pond/Wetland Area = ac. Pond/Wetland CN = 100 Pervious Area (1) = 7.45 ac. Pervious CN (1) = 80 Pervious Area (2) = ac. Pervious CN (2) = 80 Weighted Curve Number = 89.6

35 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = ac. Total Imperious Area = 4.18 ac. Impervious CN = 98 Pond/Wetland Area = 7.49 ac. Pond/Wetland CN = 100 Pervious Area (1) = 5.01 ac. Pervious CN (1) = 80 Pervious Area (2) = 3.55 ac. Pervious CN (2) = 80 Weighted Curve Number = 91.1

36 Blue Numbers Red Numbers = Input data = Answers Curve Number Calculation Basin Area = ac. Total Imperious Area = 8.08 ac. Impervious CN = 98 Pond/Wetland Area = ac. Pond/Wetland CN = 100 Pervious Area (1) = ac. Pervious CN (1) = 80 Pervious Area (2) = 4.12 ac. Pervious CN (2) = 0 Weighted Curve Number = 82.3

37 SECTION 6 EXHIBITS REVISED: 1/29/ _SWM_RPT.DOCX Island Lakes Estates JOB: 3891

38 82 19' 19'' W Soil Map Charlotte County, Florida (ISLAND LAKE ESTATES) 82 18' 44'' W ' 51'' N ' 51'' N 26 53' 59'' N ' 59'' N 82 19' 19'' W N Map Scale: 1:4,470 if printed on B portrait (11" x 17") sheet. Meters Feet Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 17N WGS ' 44'' W Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/13/2014 Page 1 of 3

39 Soil Map Charlotte County, Florida (ISLAND LAKE ESTATES) MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:20,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Charlotte County, Florida Survey Area Data: Version 11, Sep 9, 2014 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: 18, 2011 Feb 10, 2010 Mar The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/13/2014 Page 2 of 3

40 Soil Map Charlotte County, Florida ISLAND LAKE ESTATES Map Unit Legend Charlotte County, Florida (FL015) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 11 Myakka fine sand, 0 to 2 percent slopes 12 Felda fine sand, 0 to 2 percent slopes 28 Immokalee sand, 0 to 2 percent slopes % % % 29 Punta fine sand % 40 Anclote sand, depressional % 43 Smyrna fine sand, 0 to 2 percent slopes % 99 Water % Totals for Area of Interest % Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/13/2014 Page 3 of 3

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42 3891_USGS