{ "name": "Vermont radon test results by town", "description": "Radon test results for all 256 Vermont towns from the Vermont Department of Health's \"Radon Risk in Vermont\" map: residences, locations tested with Health Department radon test kits, and results at or above 4.0 pCi/L. The share elevated is left blank for towns with fewer than 20 results, as the Health Department does. Compiled by Vermont Radon from the Health Department's public map data service, retrieved 2026-10-17.", "source": { "publisher": "Vermont Department of Health", "map": "https://experience.arcgis.com/experience/85d1e95789dc4281b6a9502397887401/", "data_service": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson" }, "retrieved": "2026-10-17", "compiled_by": "Vermont Radon (https://vermontradon.com/towns/)", "notes": [ "locations_tested: locations tested with Vermont Department of Health radon test kits.", "elevated_results: results at or above 4.0 pCi/L.", "pct_elevated: elevated_results / locations_tested, rounded to one decimal; null when locations_tested is under 20. The site’s maps and pages group towns by this rate rounded to the nearest whole percent." ], "columns": [ "town", "county", "residences", "locations_tested", "elevated_results", "pct_elevated", "source_url", "retrieved" ], "towns": [ { "town": "Addison", "county": "Addison", "residences": 728, "locations_tested": 55, "elevated_results": 7, "pct_elevated": 12.7, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Albany", "county": "Orleans", "residences": 571, "locations_tested": 58, "elevated_results": 15, "pct_elevated": 25.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Alburgh", "county": "Grand Isle", "residences": 1757, "locations_tested": 67, "elevated_results": 12, "pct_elevated": 17.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Andover", "county": "Windsor", "residences": 504, "locations_tested": 46, "elevated_results": 8, "pct_elevated": 17.4, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Arlington", "county": "Bennington", "residences": 1235, "locations_tested": 78, "elevated_results": 23, "pct_elevated": 29.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Athens", "county": "Windham", "residences": 258, "locations_tested": 4, "elevated_results": 0, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Averill", "county": "Essex", "residences": 248, "locations_tested": 1, "elevated_results": 0, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Avery's Gore", "county": "Essex", "residences": 9, "locations_tested": 0, "elevated_results": 0, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bakersfield", "county": "Franklin", "residences": 670, "locations_tested": 38, "elevated_results": 5, "pct_elevated": 13.2, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Baltimore", "county": "Windsor", "residences": 116, "locations_tested": 4, "elevated_results": 2, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Barnard", "county": "Windsor", "residences": 783, "locations_tested": 45, "elevated_results": 10, "pct_elevated": 22.2, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Barnet", "county": "Caledonia", "residences": 994, "locations_tested": 90, "elevated_results": 18, "pct_elevated": 20, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Barre City", "county": "Washington", "residences": 2590, "locations_tested": 288, "elevated_results": 59, "pct_elevated": 20.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Barre Town", "county": "Washington", "residences": 3331, "locations_tested": 545, "elevated_results": 162, "pct_elevated": 29.7, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Barton", "county": "Orleans", "residences": 1317, "locations_tested": 79, "elevated_results": 6, "pct_elevated": 7.6, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Belvidere", "county": "Lamoille", "residences": 226, "locations_tested": 9, "elevated_results": 3, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bennington", "county": "Bennington", "residences": 5504, "locations_tested": 303, "elevated_results": 38, "pct_elevated": 12.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Benson", "county": "Rutland", "residences": 609, "locations_tested": 24, "elevated_results": 5, "pct_elevated": 20.8, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Berkshire", "county": "Franklin", "residences": 690, "locations_tested": 37, "elevated_results": 4, "pct_elevated": 10.8, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Berlin", "county": "Washington", "residences": 1131, "locations_tested": 162, "elevated_results": 38, "pct_elevated": 23.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bethel", "county": "Windsor", "residences": 973, "locations_tested": 72, "elevated_results": 8, "pct_elevated": 11.1, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bloomfield", "county": "Essex", "residences": 235, "locations_tested": 1, "elevated_results": 0, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bolton", "county": "Chittenden", "residences": 489, "locations_tested": 102, "elevated_results": 22, "pct_elevated": 21.6, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bradford", "county": "Orange", "residences": 1126, "locations_tested": 83, "elevated_results": 22, "pct_elevated": 26.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Braintree", "county": "Orange", "residences": 674, "locations_tested": 54, "elevated_results": 13, "pct_elevated": 24.1, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Brandon", "county": "Rutland", "residences": 1667, "locations_tested": 229, "elevated_results": 31, "pct_elevated": 13.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Brattleboro", "county": "Windham", "residences": 3987, "locations_tested": 392, "elevated_results": 78, "pct_elevated": 19.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bridgewater", "county": "Windsor", "residences": 644, "locations_tested": 31, "elevated_results": 6, "pct_elevated": 19.4, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bridport", "county": "Addison", "residences": 635, "locations_tested": 58, "elevated_results": 4, "pct_elevated": 6.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Brighton", "county": "Essex", "residences": 912, "locations_tested": 34, "elevated_results": 9, "pct_elevated": 26.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Bristol", "county": "Addison", "residences": 1553, "locations_tested": 272, "elevated_results": 99, "pct_elevated": 36.4, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Brookfield", "county": "Orange", "residences": 738, "locations_tested": 76, "elevated_results": 25, "pct_elevated": 32.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Brookline", "county": "Windham", "residences": 310, "locations_tested": 18, "elevated_results": 0, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Brownington", "county": "Orleans", "residences": 571, "locations_tested": 28, "elevated_results": 6, "pct_elevated": 21.4, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Brunswick", "county": "Essex", "residences": 84, "locations_tested": 4, "elevated_results": 1, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Buels Gore", "county": "Chittenden", "residences": 17, "locations_tested": 4, "elevated_results": 0, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Burke", "county": "Caledonia", "residences": 982, "locations_tested": 63, "elevated_results": 27, "pct_elevated": 42.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Burlington", "county": "Chittenden", "residences": 10910, "locations_tested": 1267, "elevated_results": 70, "pct_elevated": 5.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Cabot", "county": "Washington", "residences": 819, "locations_tested": 88, "elevated_results": 24, "pct_elevated": 27.3, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Calais", "county": "Washington", "residences": 906, "locations_tested": 183, "elevated_results": 53, "pct_elevated": 29, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Cambridge", "county": "Lamoille", "residences": 1624, "locations_tested": 195, "elevated_results": 19, "pct_elevated": 9.7, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Canaan", "county": "Essex", "residences": 589, "locations_tested": 31, "elevated_results": 2, "pct_elevated": 6.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Castleton", "county": "Rutland", "residences": 2082, "locations_tested": 142, "elevated_results": 29, "pct_elevated": 20.4, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Cavendish", "county": "Windsor", "residences": 926, "locations_tested": 48, "elevated_results": 6, "pct_elevated": 12.5, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Charleston", "county": "Orleans", "residences": 740, "locations_tested": 30, "elevated_results": 5, "pct_elevated": 16.7, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Charlotte", "county": "Chittenden", "residences": 1842, "locations_tested": 346, "elevated_results": 55, "pct_elevated": 15.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Chelsea", "county": "Orange", "residences": 687, "locations_tested": 47, "elevated_results": 9, "pct_elevated": 19.1, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Chester", "county": "Windsor", "residences": 1643, "locations_tested": 100, "elevated_results": 20, "pct_elevated": 20, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Chittenden", "county": "Rutland", "residences": 701, "locations_tested": 72, "elevated_results": 22, "pct_elevated": 30.6, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Clarendon", "county": "Rutland", "residences": 1118, "locations_tested": 88, "elevated_results": 16, "pct_elevated": 18.2, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Colchester", "county": "Chittenden", "residences": 6156, "locations_tested": 722, "elevated_results": 73, "pct_elevated": 10.1, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Concord", "county": "Essex", "residences": 859, "locations_tested": 19, "elevated_results": 2, "pct_elevated": null, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Corinth", "county": "Orange", "residences": 890, "locations_tested": 51, "elevated_results": 15, "pct_elevated": 29.4, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Cornwall", "county": "Addison", "residences": 565, "locations_tested": 90, "elevated_results": 9, "pct_elevated": 10, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Coventry", "county": "Orleans", "residences": 521, "locations_tested": 39, "elevated_results": 5, "pct_elevated": 12.8, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Craftsbury", "county": "Orleans", "residences": 715, "locations_tested": 69, "elevated_results": 13, "pct_elevated": 18.8, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Danby", "county": "Rutland", "residences": 761, "locations_tested": 60, "elevated_results": 22, "pct_elevated": 36.7, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Danville", "county": "Caledonia", "residences": 1371, "locations_tested": 151, "elevated_results": 24, "pct_elevated": 15.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Derby", "county": "Orleans", "residences": 2316, "locations_tested": 156, "elevated_results": 28, "pct_elevated": 17.9, "source_url": "https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson", "retrieved": "2026-10-17" }, { "town": "Dorset", "county": "Bennington", "residences": 1401, 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