20260807 19541800 1.0 FGDC 002 https://www.arcgis.com/sharing/rest/content/items/90fc336caf6144aa967d5fe8d20c425f/info/thumbnail/thumbnail.JPEG RadonDashboardCountyMapFile 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/3.5.0'><WKT>PROJCS["NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602_Feet",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1640416.666666667],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-120.5],PARAMETER["Standard_Parallel_1",45.83333333333334],PARAMETER["Standard_Parallel_2",47.33333333333334],PARAMETER["Latitude_Of_Origin",45.33333333333334],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2927]]</WKT><XOrigin>-117498300</XOrigin><YOrigin>-98850300</YOrigin><XYScale>3048.0060960121918</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2927</WKID><LatestWKID>2927</LatestWKID></ProjectedCoordinateSystem> 20260807 13415700 FALSE 20260807 13415700 <span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;">Radon test results were obtained from radon testing laboratories and processed using the <a style="background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(0, 97, 155); font-family:"Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; line-height:1.5; text-align:start; text-decoration:none; text-indent:0px; text-transform:none; word-spacing:0px;" target="_blank" href="https://www.cdc.gov/index.html">Centers for Disease Control and Prevention (CDC)</a><span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;">'s <a style="background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(0, 97, 155); font-family:"Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; line-height:1.5; text-align:start; text-decoration:none; text-indent:0px; text-transform:none; word-spacing:0px;" target="_blank" href="https://ephtracking.cdc.gov/">National Environmental Public Health Tracking Network (EPHTN)</a><span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;"> methodology and joined to a county shapefile. These data are also submitted to CDC for inclusion in their <a style="background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(0, 97, 155); font-family:"Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; line-height:1.5; text-align:start; text-decoration:none; text-indent:0px; text-transform:none; word-spacing:0px;" target="_blank" href="https://ephtracking.cdc.gov/DataExplorer/">National EPHTN Data Explorer</a><span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;">. More recent years of data may be available in this layer than in the <a style="background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(0, 97, 155); font-family:"Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; line-height:1.5; text-align:start; text-decoration:none; text-indent:0px; text-transform:none; word-spacing:0px;" target="_blank" href="https://ephtracking.cdc.gov/DataExplorer/">CDC's National EPHTN Data Explorer</a><span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;">.  <span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;">This layer was prepared for use in the Washington State Department of Health’s Radon Dashboard and is intended to support the maps and information presented in that application. Radon Dashboard County Map File 2026-09-28T00:00:00 Tumwater Washington 98501 (800) 525-0127 Washington State Department of Health April Gunderson Epidemiologist -124.793 -116.846 49.036 45.527 radon test resultscounty radon test results Laboratory-submitted radon test results from tested buildings by county, to support the Washington State Department of Health's Radon Dashboard. Radon Testing Laboratories, Centers for Disease Control and Prevention, National Environmental Public Health Tracking Network <span style='display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;'>Neither the Washington State Department of Health (WADOH), nor any agency, officer, or employee of the WADOH warrants the accuracy, reliability or timeliness of any information published by this system, nor endorses any content, viewpoints, products, or services linked from this system, and shall not be held liable for any losses caused by reliance on the accuracy, reliability, or timeliness of such information. Portions of such information may be incorrect or not current. Any person or entity who relies on any information obtained from this system does so at their own risk. Esri ArcGIS 13.5.3.57366 dataset 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2026-09-25 Tumwater Washington 98501 (800) 525-0127 Washington State Department of Health April Gunderson Epidemiologist File Geodatabase Feature Class 1 EPSG 6.3(9.0.0) Radon Dashboard County Map File Feature Class 0 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. NAME NAME String 30 0 0 Name of the Washington county represented by the feature. FIPS FIPS String 3 0 0 Three-digit Federal Information Processing Standards (FIPS) code identifying the Washington county. OBJECTID_1 ObjectID Integer 4 0 0 Object identifier from the source county geography layer. geography_code geography_code String 255 0 0 Five-digit geographic identifier for the Washington county. geography_name geography_name String 255 0 0 Name of the county. geography_full_name geography_full_name String 255 0 0 Full name of the county. geography_name_sort geography_name_sort String 255 0 0 Text value used to sort counties for display. geography_type geography_type String 255 0 0 Geographic level represented by the record. geography_year geography_year String 255 0 0 Combined geography name and year used to identify a county-year record. year year Double 8 0 0 Calendar year in which the radon tests ended. pct_ge4 pct_ge4 Double 8 0 0 Percent of radon tests with results of 4 pCi/L or more. tests_ge4 tests_ge4 Double 8 0 0 Annual number of radon tests with results of 4 pCi/L or more. pct_ge2_lt4 pct_ge2_lt4 Double 8 0 0 Percent of radon tests with results of at least 2 but less than 4 pCi/L. tests_ge2_lt4 tests_ge2_lt4 Double 8 0 0 Annual number of radon tests with results of at least 2 but less than 4 pCi/L. pct_lt2 pct_lt2 Double 8 0 0 Percent of radon tests with results of less than 2 pCi/L. tests_lt2 tests_lt2 Double 8 0 0 Annual number of radon tests with results of less than 2 pCi/L. total_tests total_tests Double 8 0 0 Annual number of radon tests. buildings_tested buildings_tested Double 8 0 0 Annual number of buildings tested for radon. housing_units housing_units Double 8 0 0 Estimated number of housing units in the geographic area. pct_housing_units_tested pct_housing_units_tested Double 8 0 0 Percent of housing units tested, derived by dividing the annual number of buildings tested by the estimated number of housing units in the area. maximum maximum Double 8 0 0 Annual maximum radon level among tested buildings, in pCi/L. mean mean Double 8 0 0 Annual mean radon level among tested buildings, in pCi/L. median median Double 8 0 0 Annual median radon level among tested buildings, in pCi/L. data_comment data_comment String 255 0 0 Indicates records with 0 total tests or 1–9 total tests. F__Tests_4_or_More_pCi_L % Tests 4 or More pCi/L String 255 0 0 Dashboard selector helper field for “% Tests 4 or More pCi/L.” F__Tests_4_or_More_pCi_L_1 # Tests 4 or More pCi/L String 255 0 0 Dashboard selector helper field for “# Tests 4 or More pCi/L.” F__Tests_At_Least_2_but_Less_Than_4_pCi_L % Tests At Least 2 but Less Than 4 pCi/L String 255 0 0 Dashboard selector helper field for “% Tests At Least 2 but Less Than 4 pCi/L.” F__Tests_At_Least_2_but_Less_Than_4_pCi_L_1 # Tests At Least 2 but Less Than 4 pCi/L String 255 0 0 Dashboard selector helper field for “# Tests At Least 2 but Less Than 4 pCi/L.” F__Tests_Less_Than_2_pCi_L % Tests Less Than 2 pCi/L String 255 0 0 Dashboard selector helper field for “% Tests Less Than 2 pCi/L.” F__Tests_Less_Than_2_pCi_L_1 # Tests Less Than 2 pCi/L String 255 0 0 Dashboard selector helper field for “# Tests Less Than 2 pCi/L.” F__Total_Tests # Total Tests String 255 0 0 Dashboard selector helper field for “# Total Tests.” F__Buildings_Tested # Buildings Tested String 255 0 0 Dashboard selector helper field for “# Buildings Tested.” F__Housing_Units_in_Area # Housing Units in Area String 255 0 0 Dashboard selector helper field for “# Housing Units in Area.” F__Housing_Units_Tested % Housing Units Tested String 255 0 0 Dashboard selector helper field for “% Housing Units Tested.” Maximum1 Maximum1 String 255 0 0 Dashboard selector helper field for “Maximum.” Mean1 Mean1 String 255 0 0 Dashboard selector helper field for “Mean.” Median1 Median1 String 255 0 0 Dashboard selector helper field for “Median.” Geography Geography String 255 0 0 Dashboard selector helper field identifying the geography as County. arbitrary_legend_value arbitrary_legend_value Double 8 0 0 Helper value used to support dashboard legend display; not a substantive data measure. Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Shape_Area Double 8 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. 1014 Simple FALSE 0 TRUE FALSE