20260826 14585400 1.0 FGDC 002 NoiseAbatementBuilt 1032336.068831 2463704.271378 100793.102339 1253423.079227 1 Projected GCS_North_American_1983_HARN Linear Unit: Foot_US (0.304801) NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.8'><WKT>PROJCS[&quot;NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602_Feet&quot;,GEOGCS[&quot;GCS_North_American_1983_HARN&quot;,DATUM[&quot;D_North_American_1983_HARN&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Lambert_Conformal_Conic&quot;],PARAMETER[&quot;False_Easting&quot;,1640416.666666667],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-120.5],PARAMETER[&quot;Standard_Parallel_1&quot;,45.83333333333334],PARAMETER[&quot;Standard_Parallel_2&quot;,47.33333333333334],PARAMETER[&quot;Latitude_Of_Origin&quot;,45.33333333333334],UNIT[&quot;Foot_US&quot;,0.3048006096012192],AUTHORITY[&quot;EPSG&quot;,2927]]</WKT><XOrigin>-117498300</XOrigin><YOrigin>-98850300</YOrigin><XYScale>3048.0060960121928</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>-100000</MOrigin><MScale>20000</MScale><XYTolerance>0.003280833333333</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.0001</MTolerance><HighPrecision>true</HighPrecision><WKID>2927</WKID><LatestWKID>2927</LatestWKID></ProjectedCoordinateSystem> 20260826 15030800 FALSE 20260826 15030800 150000000 5000 FGDC CSDGM Metadata <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-size:16pt"><SPAN>Noise abatement walls are free-standing barriers built parallel to a highway. They are usually found near public areas, such as parks, and residential areas. The walls range in height from 6 to 20 feet but are normally 12 to 15 feet tall. They can reduce noise levels by 10 to 15 decibels, cutting the loudness of traffic noise in half. Barriers can be formed from earth berms, or constructed of wood, stucco, concrete, masonry, metal, or other materials. This feature class contains Type I and Type II noise walls that have been constructed. This data has been synchronized with the LRS dated December 31, 2025. Data appended June 2026. Updates were provided by the Air Quality and Acoustics Program. Walls were checked using the SR View Application and corrected if needed.</SPAN></SPAN></P></DIV></DIV></DIV> Noise Abatement - Built, Washington State Department of Transportation 2026-08-01T12:00:00 2017-04-04T00:00:00 external c62e2f435c9c1de19a40b7c341c90006376c53ca5b0d020a48de3164c9381c33 WSDOT ESO GIS Washington State Department of Transportation Environmental GIS Data Manager PO Box 47331 Olympia WA 98504-7331 wsdotesogis@wsdot.wa.gov 360-705-7895 True WSDOT ESO GIS -123.018882 -117.090621 48.769514 45.563711 1 Washington State 2026-08-01T00:00:00 2026-08-01T00:00:00 WSDOT Noise Walls Barriers Abatement Nosie Barriers Noise Walls Noise Abatement Noise abatement walls are free-standing barriers built parallel to a highway. Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388 WSDOT ENVIRONMENTAL SERVICES - Air Quality and Acoustics Program external c62e2f435c9c1de19a40b7c341c90006376c53ca5b0d020a48de3164c9381c33 WSDOT ESO GIS Washington State Department of Transportation Environmental GIS Data Manager PO Box 47331 Olympia WA 98504-7331 wsdotesogis@wsdot.wa.gov 360-705-7895 True WSDOT ESO GIS 2026-08-01T00:00:00 external c62e2f435c9c1de19a40b7c341c90006376c53ca5b0d020a48de3164c9381c33 WSDOT ESO GIS Washington State Department of Transportation Environmental GIS Data Manager PO Box 47331 Olympia WA 98504-7331 wsdotesogis@wsdot.wa.gov 360-705-7895 True WSDOT ESO GIS <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>For Planning use only. The Washington State Department of Transportation (WSDOT) shall not be liable for any activity involving the use of the data, including, but not limited to, lost profits or savings or any other economic or consequential damages. Nor does the WSDOT warrant the fitness of the data for use for a particular purpose, or the installation of the data, its use, or the results obtained. To the fullest extent permitted by law, the Data User shall hold harmless, defend at its own expense, and indemnify WSDOT, its officers, employees, agents, and volunteers, against any and all liability, claims, losses, damages, or expenses, including reasonable attorney’s fees, arising from all acts or omissions of the Data User or its officers, agents, or employees in its use of the WSDOT data.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV> dataset 20260826 File Geodatabase Feature Class EPSG 6.3(9.0.0) Noise Abatement - Built Feature Class 271 NoiseAbatementBuilt WSDOT OBJECTID OBJECTID OID 4 0 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. REF_ID Noise Abatement Reference ID Double 8 38 8 Noise Abatement Unique Reference Identifier WSDOT FHWANBID FHWA Noise Abatement ID Integer 4 0 0 FHWA noise abatement identification number. WSDOT RouteIdentifier State Route Identifier String 75 0 0 WSDOT Data Catalog A unique Route identifier to identify a route (City,County State, Tribal, Forest) in any given data set. For State Routes, Route IDs are assigned by WSDOT's GIS and Roadway Data Office RouteID State Route Number String 254 0 0 The number assigned to the State Route and enacted into law by the Washington State Legislature WSDOT Data Catalog BeginAccumulatedRouteMile Begin Accumulated Route Mile Double 8 0 0 The measure of a point at the beginning of a roadway segment along the length of a route in which the distance is measured as an accrual of mileage from the beginning of the route. The Accumulated Route Mile Begin may define the starting point for a business activity or measurement. For example, project location or roadside event. WSDOT Application - DOTS EndAccumulatedRouteMile End Accumulated Route Mile Double 8 0 0 The measure of a point at the end of a roadway segment along the length of a route in which the distance is measured as an accrual of mileage from the beginning of the route. The Accumulated Route Mile Begin may define the starting point for a business activity or measurement. For example, project location or roadside event. WSDOT Application - DOTS DisplayOff Display Offset Double 8 38 8 60ft display offset location of wall from centerline of roadway WSDOT DIR Direction String 254 0 0 A code that represents whether the transportation asset or project is located in the (I) Increasing Milepost Direction of Travel, (D) Decreasing Milepost Direction of Travel or, (B) Both Milepost Directions of Travel. WSDOT I Increasing side of the state route. WSDOT D Decreasing side of the state route. WSDOT PublishDate Publish Date Date 8 0 0 Publish Date WSDOT LRSDate Linear Referencing System Date Date 8 0 0 The Linear Referencing System date that this record is using for location. WSDOT Data Catalog YEAR Retrofit Year Double 8 0 0 Noise Wall Retrofit Year WSDOT MATERIAL Material Type String 254 0 0 The type of material used to construct the wall, if known. WSDOT TYPE Wall Type String 254 0 0 Type of wall, if known. WSDOT LENGTHFEET Length Feet Double 8 0 0 Length of the noise wall in feet WSDOT COSTORIG Original Cost Double 8 0 0 The original cost of the noise wall. WSDOT SOURCE Source of Data String 254 0 0 Source of the data. WSDOT PLANWORK Planned Work String 254 0 0 Planned Work WSDOT CITY City Name String 254 0 0 The Name of the City WSDOT COUNTY County Name String 254 0 0 The Name of the County as ratified by County constituents in a general election and approved by the Washington State Legislature. WSDOT Data Catalog PLANTITLE ROW Plan Title String 254 0 0 Right of Way plan title WSDOT MinHeightFt Min Height Feet Double 8 0 0 Minimum wall height Feet WSDOT MaxHeightFt Max Height Feet Double 8 0 0 Maximum wall height Feet WSDOT GlobalID Global ID String 254 0 0 GlobalID ESRI Shape.STLength() Shape.STLength() Double 0 0 0 Coordinates defining the features. WSDOT 271 Simple FALSE 271 TRUE TRUE external c62e2f435c9c1de19a40b7c341c90006376c53ca5b0d020a48de3164c9381c33 WSDOT ESO GIS Washington State Department of Transportation Environmental GIS Data Manager PO Box 47331 Olympia WA 98504-7331 wsdotesogis@wsdot.wa.gov 360-705-7895 True WSDOT ESO GIS Noise wall data were compiled in an Excel spreadsheet. The first step in the conversion to GIS data was to add a unique Id field ("ID") to the current and proposed data sets. Separate files were created for noise walls in the increasing and decreasing directions for later use in ArcMap. Two approaches were used to get the data from Excel to ArcMap. The files for the current noise walls were converted to dbfs. The files for the proposed noise walls were converted to Access tables. The dbfs and Access tables were then added to ArcMap. The "Add Route Events" tool was used with the offset option to create event themes from the current and proposed, increasing and decreasing noise walls. The option "generate a field for locating errors" was used; it's found under "Add Route Events" advanced options. The current noise wall event themes were then converted to shapefiles and merged, and the proposed noise wall event themes were converted to feature classes and merged. Noise Wall data were compiled in an Excel spreadsheet and overlapping or duplicate noise walls were removed. Updates were provided by the Air, Noise, and Energy Program. Walls were checked using the SR View Application and corrected if needed. If data came from a plan sheet the accuracy is to 1/100 of a mile or approximately 53 feet. If the data was added from SR View photos the accuracy is approximately 2/100 or a mile or 106 feet. The Washington State Department of Transportation shall not be liable for any activity involving this data with regard to lost profits or savings or any other consequential damages; or the fitness for use of the data for a particular purpose; or the installation of the data, its use, or the results obtained. For Planning use only. The Washington State Department of Transportation (WSDOT) shall not be liable for any activity involving the use of the data, including, but not limited to, lost profits or savings or any other economic or consequential damages. Nor does the WSDOT warrant the fitness of the data for use for a particular purpose, or the installation of the data, its use, or the results obtained. To the fullest extent permitted by law, the Data User shall hold harmless, defend at its own expense, and indemnify WSDOT, its officers, employees, agents, and volunteers, against any and all liability, claims, losses, damages, or expenses, including reasonable attorney’s fees, arising from all acts or omissions of the Data User or its officers, agents, or employees in its use of the WSDOT data.