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Layer: TDA (ID: 14)

Parent Layer: SDSI 2015

Name: TDA

Display Field: as_built

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Discharge Point (DP):Typically the end point of a pipe, culvert, channel, swale, or ditch that discharges from the Caltrans right-of-way (ROW) into a storm water system, water of the US, or other property not owned by Caltrans. The last known point at which stormwater leaves Caltrans ROW.Tributary Drainage Area (TDA):The area within the Caltrans ROW that contributes storm water directly to associated Caltrans storm water structures. Defined by both a legal boundary (ROW) and a hydraulic boundary which guides the flow of water. The TDA is the area draining runoff to a discharge point and includes all the upstream inlets and outfalls that direct water to that point.Outfall:The end point of a pipe that daylights within the Caltrans ROW and then releases to a discharge point.Inlet:A feature that collects storm water and directs it into a Caltrans storm water system.Facility:A Caltrans facility (park and ride, maintenance station, vista, rest area, etc.)Best Management Practices (BMP): An approved treatment control system that is listed in the Project Planning and Design Guide, Appendix B (CTSW-RT-10-254.03).These features are largely based on the work plan developed previously for Phase II data inventory (Phase II Storm Drain System Inventory Work Plan, December 2005) with the following changes: Treatment BMPs will be mapped as areas instead of as point locations and will include both existing BMPs and potential BMP sites (with a focus on medium and high priority reach areas of the Caltrans NPDE Permit Attachment IV TMDL watersheds located outside the previous Phase II SDSI data areas), Documentation of the most likely connectivity between inventoried inlets and outfalls. This connectivity will not result in a new feature set, but will be captured using attributes existing defined features (e.g., outfalls and inlets). Potential Treatment Best Management Practices (PT_BMP): An area within the Caltrans ROW that could be utilized to construct a treatment BMP. Potential Treatment BMP locations shall be identified by the field crews using the following criteria:There is available right of way to possibly place an infiltration basin or bio-swale; andOpen flat area, within the right of way, that is an eligible area to place potential BMP (near discharge point)Connectivity:Feature connectivity represents the flow of water leaving the tributary drainage area throught the discharge pointCommon NameData FieldRequired in SOWDescriptionValidation (Valid Value Table in Capital Letters)Collection MethodT-BMPDPInletOutfallTDAAs-built Diagram ReferenceAS_BUILT Enter the Caltrans Expenditure Authorization (EA) number on the as-built plans to define the feature. If there are none then "NA" (Not Available) is listed. Field/Office EntryxxxxxIn ASPS Area?ASBS Indicates if this feature resides in an area of special biological interest. If it is not then "No ASBS" is listed.Yes/NoGeoprocessingxxxxxBC IDBC_ID A unique identifier for the feature (see description below). Automatically generatedxxxxxCity NameCITY_NAM The name of the city where the feature is located. If it is outside the city boundary then "Outside Limits" is listed (see description below). Populated through spatial analysisGeoprocessingxxxxxCommentsCOMMENTS The comments field is used to describe any aspect of the Feature that is strange, difficult to quantify or other data that is not easily entered into other portions of the software. Field/Office EntryxxxxxCountyCOUNTY The county that the feature resides in (see description below).Populated through spatial analysisGeoprocessingxxxxxCaltrans DistrictCT_DIST The Caltrans District that the feature resides in.Populated through spatial analysisGeoprocessingxxxxxMaintenance IDCT_ID A placeholder to use to link this data and the Caltrans maintenance data. Office EntryxxxxxDimensionsDIMENSxThe dimensions of the feature, if applicable. Office EntryxxxxxDischarge toDISCH_SYxThe system that the feature discharges to Office Entry x Dry Weather FlowDRY_FLOW Indicates if there flow observed during dry weather.Yes/NoField EntryxxxxxFacility NameFACL_NM The name of the Facility (if applicable). Field/Office EntryxxxxxFacility TypeFACL_TP Facility type: Park and Ride , Maintenance Station, etc. (if applicable).FACILITY_VVLField/Office EntryxxxxxFeature TypeFEAT_TPxThe type of the feature.BMP_TYPE_VVL, DP_TYPE_VVL, IN_TYPE_VVL. OUT_TYPE_VVLField/Office Entryxxxx Follow up?FOLLOWUP An internal field used to indicate that the feature needs further evaluation.Yes/NoField/Office Entryxxxxx GlobalID ESRI Field generated by ArcGIS. Automatically generated Grate TypeGRATE_TY The type of covering on an inlet.GRATE_TY_VVLField/Office Entry x x Groundwater DepthGW_DEPTH The depth to groundwater (see description below).Populated through spatial analysisGeoprocessing xx xHydrologic Soils GroupHSOILS_GROUP Hydrologic Soils Group Field/Office Entryx Highway NumberHWYxThe highway/route number. Field/Office EntryxxxxxHighway DirectionHWY_DIRxThe direction of the highway.HWY_DIR_VVLField/Office EntryxxxxxHydrologic Sub-UnitHYD_SUBUNIT Hydrologic sub-unit (see description below).Populated through spatial analysisGeoprocessing xxxxHydrologic UnitHYD_UNIT Hydrologic unit (see description below).Populated through spatial analysisGeoprocessingxxxxxImage LinkIMGLNK A hyperlink to the image location for this feature. Field EntryxxxxxWhere First IdentifiedIN_SRC Determines if this feature was this identified in the field or via an as-built first.IN_SRC_VVLField/Office EntryxxxxxInternal StatusIN_STAT An internal field for tracking if the feature has been through QAQC.IN_STAT_VVLField/Office EntryxxxxxInventory DateINV_DATE The date the feature was inventoried.DateField/Office EntryxxxxxLast Updated DateLastUpdated When data was last updated.DateField/Office EntryxxxxxLast Updated ByLastUpdatedBy Who updated the data last. Field/Office EntryxxxxT-BMPDPInletOutfallTDALatitudeLat Latitude of the feature (for TDA’s this is the centroid of the polygon). Field/Office EntryxxxxxLongitudeLong Longitude of the feature (for the TDA’s this is the centroid of the polygon). Field/Office EntryxxxxxNon-Caltrans DischargeNON_CT_DISC Is there run off from another property discharging via CT storm water features. Field Entry x Number of LanesNUM_LANE Number of driving lanes in each direction. NumericField/Office Entry xxxxObject IDOBJECTID ESRI internal field. Automatically generatedxxxxxOther IDOTHER_ID This is populated for some Phase 1 data. For treatment BMPs, enter the Caltrans Project Identification Number (PID) on the as-built plans.Enter “NA”if none is available. Office EntryxxxxxPaved AreaPAVED_AREA Paved AreaUnits? Acres or Hectares?Field/Office Entryx Post MilePOST_MILxThe post mile of the feature (see description below).Populated through spatial analysisGeoprocessingxxx xPeak Flow BasinPPBMP Peak Flow Attenuation Basin (Streams) .PPMB_VVLOffice Entry x Parent FeaturePRN_FEATxThe feature downstream that receives storm water from the present featureMust be an existing Feature IDField/Office EntryxxxxxPump Station?PS_PRES Indicates if there is there a pump station present.Yes/NoField/Office Entry x Receiving WaterREC_WATERxThe receiving water that this feature discharges to (see description below).Populated through spatial analysisOffice Entry x RWQCB IDRWQCB_ID Water Quality Control Board Number Geoprocessingx RWQCB NameRWQCB_NAME Water Quality Control Board Name Geoprocessingx ShapeShape ESRI internal field. Automatically generatedxxxxxShape AreaShape_Area x ESRI internal field. Automatically generated Shape LengthShape_Length ESRI internal field. Automatically generated xAvailable Site AreaSite_Area The area available for treatment BMPsUnits? Acres or Hectares?Field Entryx Soil TypeSOIL_TPxThe soil type (see description below).Populated through spatial analysisGeoprocessingxxxxxStatusSTATUS Indicates if this feature is this an active Caltrans feature or has it been retired or removed.STATUS_VVLField/Office EntryxxxxxTDA SlopeTDA_SLOP Describes the average slope of the TDA.TDA_SLOP_VVLField Entry xTeamTEAM The name of the personnel that collected the data. Field/Office EntryxxxxxUnpaved AreaUNPAVED_AREA Unpaved AreaUnits? Acres or Hectares?Field/Office Entryx CalWater Watershed IDWATER_ID Watershed ID Number Geoprocessingx CalWater Watershed NameWATER_NAME Watershed name Geoprocessingx Water Quality FlowWQ_FLOW Water Quality Flow (for flow base Treatment BMPs)/Water Quality Volume - (Comment: This attribute will be gathered in the SWDR) (in/hr. or gallons) Office Entryx X (Meters)X_Meter The X coordinate for the feature, in meters. Field/Office EntryxxxxxY (Meters)Y_Meter The Y coordinate for the feature, in meters. Field/Office Entryxxxxx

Service Item Id: 94096c685d5e4a22b2b471de4c5ddee5

Copyright Text: Gibert Ogaz Senior Transportation Engineer gilbert_ogaz@dot.ca.gov California Department of Transportation Division of Environmental Analysis Stormwater Program Implementation 1120 N Street, Sacramento, California, 95814 Mail: P.O. Box 942874 http://www.dot.ca.gov/hq/env/stormwater/index.htm

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