HomeMy WebLinkAboutC8.0 Stormwater Pollution Prevention NotesWINDWARD AT LEGACY
C8.0REVISIONSSTORMWATER POLLUTION
PREVENTION NOTESNOT FOR CONSTRUCTIONPRELIMINARYINDIANAPOLIS - TERRE HAUTEMUNCIE - LAFAYETTE - NEW ALBANYwww.hwcengineering.comSEEDING SCHEDULESOILS MAP (Not to scale)THIS SHEET TO BE USED FOREROSION CONTROL ONLY.PERSON ONSITE RESPONSIBLE FOR EROSION CONTROL:LENNAR HOMES OF INDIANA, INC.Phone: (317) 846-3148STUART HUCKELBERRYOWNERS INFORMATIONLENNAR HOMES OF INDIANA, INC.Phone: (317) 846-3148INSPECTORS INFORMATIONALPHA EMCPhone: (317) 448-52389025 NORTH RIVER ROAD, SUITE 100CONTACT: STUART HUCKELBERRYINDIANAPOLIS, IN 46240rmueller@AlphaEMC.comLENNAR HOMES OF INDIANA, INC.Phone: (317) 846-3148STUART HUCKELBERRYRUSSELL MUELLER stuart.huckelberry@lennar.comWindward at Legacy SWPPP NarrativeIntent: SWPPP for Windward at Legacy is intended to apply to Land Development and Homebuildingactivities. Proposed Construction: This phase anticipates Construction activities that will include landdevelopment and townhomes. Initial Land Development activities slated to commence in August of2020 and are anticipated to be complete in August of 2025. Homebuilding activities expected tocommence in August of 2020 and continue through August 2025.Location, Size & Phasing: This project is located along the west side of Community Drive, south of146th St. in Carmel, Hamilton County, Indiana and encompasses 12.0 Acres to be subdivided into 142townhome units; all area to be disturbed and constructed as a single Phase. This phase is adjacent topreviously developed Playschool at Legacy located to the east and a proposed residentialdevelopment to the south.Current and Existing Conditions: This project site is currently a combination of wooded areas andpasture/grass. A couple of small wetland patches exist (~1.0 ac. total) within this phase that will beremoved. The existing drainage pattern is characterized by sheet flow south, away from the subjectsite.Additional Pertinent Information: There are also no known pollutants or contaminants past orpresent associated with this phase.Soil Characteristics: This site is characterized by Fox, Ockley, Sleeth, and Westland soil types.Fox Loam 2-6 percent slopes, erodedProperties and qualities·Slope: 2 to 6 percent·Depth to restrictive feature: 32 to 39 inches·Natural drainage class: well drained·Runoff class: Low·Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00in/hr)·Depth to water table: More than 80 inches·Frequency of flooding: None·Frequency of ponding: NoneOckley Silt Loam 0-2 percent slopesProperties and qualities·Slope: 0 to 2 percent·Depth to restrictive feature: 40 to 72 inches to strongly contrasting textural stratification·Natural drainage class: Well drained·Runoff class: Low·Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.6 to 2.00in/hr)·Depth to water table:More than 80 inches·Frequency of flooding: None·Frequency of ponding: None·Sleeth Loam 0-2 percent slopesProperties and qualities·Slope: 0 to 2 percent·Depth to restrictive feature: 40 to 607 inches to strongly contrasting textural stratification·Natural drainage class: Somewhat poorly drained·Runoff class: Low·Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00in/hr)·Depth to water table: About 6 to 24 inches·Frequency of flooding: None·Frequency of ponding: NoneWestland Silty Clay 0-2 percent slopesProperties and qualities·Slope: 0 to 2 percent·Depth to restrictive feature: 40 to 60 inches to strongly contrasting textural stratification·Natural drainage class: Poorly drained·Runoff class: Neglible·Depth to water table: About 0 to 6 inches·Frequency of flooding: NoneFrequency of ponding: FrequentReceiving Waters: Tunis Gerard Legal Drain to West Fork White River - Indianapolis. White Riverwithin Hamilton & Marion Counties has been listed on 2018 Indiana Compiled 303(d) list withImpairment. No TMDL's have been established and no specific BMP's are currently required fordischarges. Structures with sumps, vegetated swales and master-planned detention basinsdownstream (part of the overall Legacy Master Drainage Design) are provided as BMP's for thisdevelopment.Local Regulatory Compliance: The following local regulations, ordinances and requirements havebeen included by reference and are not intended to be enforceable by Federal government agencies,but may be enforceable by State government agencies (Local Qualified or State Delegated Programs):·Hamilton County Indiana Stormwater Manual·City of Carmel Stormwater Management Ordinance & Technical Standards ManualSOILS LEGENDSTORMWATERPOLLUTION PREVENTIONNOTESCITY OF CARMEL, INDIANA STORMWATER POLLUTION PREVENTION PLAN INDEX