{
  "dataset_name": "Radon Mitigation System Component, Clearance, Performance, and Iowa Rule Specifications",
  "version": "1.1",
  "verified_date": "2026-07-24",
  "record_count": 72,
  "records": [
    {
      "record_id": "RMS-001",
      "record_type": "component_specification",
      "component_id": "C01",
      "component_name": "Suction pit",
      "topic": "collection",
      "requirement_text": "Cleared void of at least 0.25 cubic feet, approximately 2 US gallons, unless excavation is impracticable.",
      "authority": "SGM-SF-2023",
      "section": "6.1.1",
      "value": "0.25",
      "unit": "cubic feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-002",
      "record_type": "component_specification",
      "component_id": "C02",
      "component_name": "Suction point seal",
      "topic": "sealing",
      "requirement_text": "Permanent airtight seal; ASTM C920 Class 25 or better caulk; gaps wider than 1/2 inch pre-filled with backer rod.",
      "authority": "SGM-SF-2023",
      "section": "6.1.1.1; 7.2.1–7.2.2",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-003",
      "record_type": "component_specification",
      "component_id": "C03",
      "component_name": "Sealed sump lid",
      "topic": "sump",
      "requirement_text": "Rigid, rot-resistant, mechanically fastened cover with gasket or non-permanent caulk; penetrations sealed; removable access at least 4 inches where a pump is present.",
      "authority": "SGM-SF-2023",
      "section": "7.5.1; 7.5.1.1",
      "value": "4",
      "unit": "inches",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-004",
      "record_type": "component_specification",
      "component_id": "C04",
      "component_name": "Drain-tile connection",
      "topic": "collection",
      "requirement_text": "Connection must not compromise the drainage system’s capacity to move water.",
      "authority": "SGM-SF-2023",
      "section": "6.1.1.2",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-005",
      "record_type": "component_specification",
      "component_id": "C05",
      "component_name": "Soil-gas retarder — crawl space",
      "topic": "membrane",
      "requirement_text": "Nominal 6-mil minimum; applicable seams and repairs sealed or overlapped; membrane fastened and perimeter closed as specified.",
      "authority": "SGM-SF-2023",
      "section": "7.6; 7.6.3; 7.6.4; 7.7.1–7.7.4",
      "value": "6",
      "unit": "mil",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-006",
      "record_type": "component_specification",
      "component_id": "C06",
      "component_name": "Soil-gas retarder — new construction",
      "topic": "membrane",
      "requirement_text": "Minimum 6-mil polyethylene or 3-mil cross-laminated sheeting; joints overlapped at least 12 inches.",
      "authority": "IRC 2021 Appendix AF",
      "section": "AF103.3",
      "value": "6",
      "unit": "mil",
      "applies_to": "new construction",
      "verification_tier": "filled-circle",
      "source_url": "https://codes.iccsafe.org/content/IRC2021P1/appendix-af-radon-control-methods",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-007",
      "record_type": "component_specification",
      "component_id": "C07",
      "component_name": "Gas-permeable layer — new construction",
      "topic": "collection",
      "requirement_text": "Uniform clean aggregate layer at least 4 inches thick, or another collector option allowed by AF103.2.",
      "authority": "IRC 2021 Appendix AF",
      "section": "AF103.2",
      "value": "4",
      "unit": "inches",
      "applies_to": "new construction",
      "verification_tier": "filled-circle",
      "source_url": "https://codes.iccsafe.org/content/IRC2021P1/appendix-af-radon-control-methods",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-008",
      "record_type": "component_specification",
      "component_id": "C08",
      "component_name": "Vent pipe diameter",
      "topic": "piping",
      "requirement_text": "At least the cross-sectional area of 3-inch inside-diameter pipe; at least 4-inch where analysis indicates more than 80 cfm; 2-inch only where analysis verifies 40 cfm or less.",
      "authority": "SGM-SF-2023",
      "section": "6.3.1–6.3.3",
      "value": "3",
      "unit": "inches ID equivalent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-009",
      "record_type": "component_specification",
      "component_id": "C09",
      "component_name": "Vent pipe diameter — new construction",
      "topic": "piping",
      "requirement_text": "Gas-tight ABS, PVC, or equivalent pipe at least 3 inches in diameter, extending from the collection layer through the roof.",
      "authority": "IRC 2021 Appendix AF",
      "section": "AF103.5.3",
      "value": "3",
      "unit": "inches",
      "applies_to": "new construction",
      "verification_tier": "filled-circle",
      "source_url": "https://codes.iccsafe.org/content/IRC2021P1/appendix-af-radon-control-methods",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-010",
      "record_type": "component_specification",
      "component_id": "C10",
      "component_name": "Vent pipe material",
      "topic": "piping",
      "requirement_text": "Specified Schedule 40 PVC or ABS standards; qualifying exterior downspout material permitted on the pressure side at stated equivalent sizes.",
      "authority": "SGM-SF-2023",
      "section": "6.2.5; 6.3.7",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-011",
      "record_type": "component_specification",
      "component_id": "C11",
      "component_name": "Vent pipe slope",
      "topic": "piping",
      "requirement_text": "Continuous downward slope toward the suction point of at least 1/8 inch per foot.",
      "authority": "SGM-SF-2023",
      "section": "6.2.2",
      "value": "0.125",
      "unit": "inch per foot",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-012",
      "record_type": "component_specification",
      "component_id": "C12",
      "component_name": "Vent pipe supports",
      "topic": "piping",
      "requirement_text": "Supports no more than 10 feet apart vertically and 4 feet horizontally; no support by driving fasteners through pipe; no use of existing plumbing or ducts as supports.",
      "authority": "SGM-SF-2023",
      "section": "6.2.7.1–6.2.7.2",
      "value": "10 vertical / 4 horizontal",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-013",
      "record_type": "component_specification",
      "component_id": "C13",
      "component_name": "Vent pipe insulation",
      "topic": "piping",
      "requirement_text": "R-4 or better where freezing can cause performance-degrading ice; R-1.8 or better plus exterior vapor barrier where surface condensation could damage materials.",
      "authority": "SGM-SF-2023",
      "section": "6.2.9",
      "value": "R-4 / R-1.8",
      "unit": "R-value",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-014",
      "record_type": "component_specification",
      "component_id": "C14",
      "component_name": "Pipe labels",
      "topic": "labeling",
      "requirement_text": "At least one label at each floor level and in attics, garages, and crawl spaces; stated minimum lettering sizes and contrasting color.",
      "authority": "SGM-SF-2023",
      "section": "8.4.1; 8.4.4",
      "value": "1/4 title; 1/8 other",
      "unit": "inches letter height",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-015",
      "record_type": "component_specification",
      "component_id": "C15",
      "component_name": "Fan",
      "topic": "fan",
      "requirement_text": "Continuous-duty, sealed against water and soil-gas leakage, capable of passing water through or around it while running, thermally protected, mounted vertically, and flexibly coupled.",
      "authority": "SGM-SF-2023",
      "section": "6.5.1; 6.5.4",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-016",
      "record_type": "component_specification",
      "component_id": "C16",
      "component_name": "Fan location",
      "topic": "fan",
      "requirement_text": "Fan prohibited in conditioned or occupiable space and directly beneath such space; permitted in compliant attic, exterior, or garage locations.",
      "authority": "SGM-SF-2023",
      "section": "6.5.2–6.5.3; 6.5.4(e)",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-017",
      "record_type": "component_specification",
      "component_id": "C17",
      "component_name": "Electrical disconnect",
      "topic": "electrical",
      "requirement_text": "Disconnect within sight and 6 feet of fan; outdoor wiring in conduit unless local code permits otherwise; no plug connection outdoors; no wiring inside duct.",
      "authority": "SGM-SF-2023",
      "section": "8.3.1; 8.3.3–8.3.4",
      "value": "6",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-018",
      "record_type": "component_specification",
      "component_id": "C18",
      "component_name": "Disconnect label",
      "topic": "labeling",
      "requirement_text": "Disconnect identified as a system component with wording such as “Radon Fan — Do Not Turn Off.”",
      "authority": "SGM-SF-2023",
      "section": "8.4.5",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-019",
      "record_type": "component_specification",
      "component_id": "C19",
      "component_name": "Viewable operating-range monitor",
      "topic": "monitoring",
      "requirement_text": "Fan-equipped system requires a continuously displayed measured value within its established operating range, unless the remote-monitoring exception applies.",
      "authority": "SGM-SF-2023",
      "section": "8.2.1",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-020",
      "record_type": "component_specification",
      "component_id": "C20",
      "component_name": "Active notification monitor",
      "topic": "monitoring",
      "requirement_text": "Fan-equipped system requires an audible, vividly visible, or electronic failure alert; power and reset provisions apply.",
      "authority": "SGM-SF-2023",
      "section": "8.2.2; 8.2.3(e)–(f)",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-021",
      "record_type": "component_specification",
      "component_id": "C21",
      "component_name": "System label or tag",
      "topic": "labeling",
      "requirement_text": "A primary system-description label is placed on a primary component; approved locations include duct piping near a system monitor, within 12 inches of the electrical service panel, or another prominent location. For owner-occupied homes, the label includes the installation date, monitor and failure-response information, a retest recommendation, government resources, and installer identification.",
      "authority": "SGM-SF-2023",
      "section": "8.4.2; 8.4.2.1",
      "value": "",
      "unit": "",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-022",
      "record_type": "component_specification",
      "component_id": "C22",
      "component_name": "Floor-drain trap",
      "topic": "sealing",
      "requirement_text": "Opening modified using a one-way valve, rerouting, or a drain trap capable of holding at least 6 inches of water.",
      "authority": "SGM-SF-2023",
      "section": "7.8.2",
      "value": "6",
      "unit": "inches water",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-023",
      "record_type": "clearance_specification",
      "component_id": "EX01",
      "component_name": "Exhaust height above grade",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet above grade nearest the exhaust.",
      "authority": "SGM-SF-2023",
      "section": "6.4.5",
      "value": "10",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-024",
      "record_type": "clearance_specification",
      "component_id": "EX02",
      "component_name": "Exhaust height above grade",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet above grade.",
      "authority": "CCAH-2020-0523",
      "section": "601.2(2)",
      "value": "10",
      "unit": "feet",
      "applies_to": "new construction",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/CCAH-2020-0523/index.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-025",
      "record_type": "clearance_specification",
      "component_id": "EX03",
      "component_name": "Exhaust height above grade",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet above ground.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Checking Your Contractor’s Work",
      "value": "10",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-026",
      "record_type": "clearance_specification",
      "component_id": "EX04",
      "component_name": "Operable opening to side",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet horizontally to the side of operable openings.",
      "authority": "SGM-SF-2023",
      "section": "6.4.6(a)",
      "value": "10",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-027",
      "record_type": "clearance_specification",
      "component_id": "EX05",
      "component_name": "Operable opening below",
      "topic": "exhaust and termination",
      "requirement_text": "At least 4 feet from operable openings below the exhaust.",
      "authority": "SGM-SF-2023",
      "section": "6.4.6(b)",
      "value": "4",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-028",
      "record_type": "clearance_specification",
      "component_id": "EX06",
      "component_name": "Opening relationship",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet from windows, doors, or other air intakes unless exhaust is at least 2 feet above the opening.",
      "authority": "CCAH-2020-0523",
      "section": "601.3",
      "value": "10 / 2",
      "unit": "feet",
      "applies_to": "new construction",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/CCAH-2020-0523/index.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-029",
      "record_type": "clearance_specification",
      "component_id": "EX07",
      "component_name": "Opening relationship",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet from windows or conditioned-space openings that are less than 2 feet below the exhaust.",
      "authority": "IRC 2021 Appendix AF",
      "section": "AF103.5.3",
      "value": "10 / 2",
      "unit": "feet",
      "applies_to": "new construction",
      "verification_tier": "filled-circle",
      "source_url": "https://codes.iccsafe.org/content/IRC2021P1/appendix-af-radon-control-methods",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-030",
      "record_type": "clearance_specification",
      "component_id": "EX08",
      "component_name": "Opening relationship",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet from openings if exhaust is not at least 2 feet above them.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Checking Your Contractor’s Work",
      "value": "10 / 2",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-031",
      "record_type": "clearance_specification",
      "component_id": "EX09",
      "component_name": "Pitched-roof termination",
      "topic": "exhaust and termination",
      "requirement_text": "At least 1 foot above pitched roof at point penetrated.",
      "authority": "SGM-SF-2023",
      "section": "6.4.10(a)",
      "value": "1",
      "unit": "foot",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-032",
      "record_type": "clearance_specification",
      "component_id": "EX10",
      "component_name": "Pitched-roof termination",
      "topic": "exhaust and termination",
      "requirement_text": "At least 1 foot above highest point of roof penetration.",
      "authority": "CCAH-2020-0523",
      "section": "601.2(1)",
      "value": "1",
      "unit": "foot",
      "applies_to": "new construction",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/CCAH-2020-0523/index.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-033",
      "record_type": "clearance_specification",
      "component_id": "EX11",
      "component_name": "Roof termination",
      "topic": "exhaust and termination",
      "requirement_text": "At least 12 inches above roof.",
      "authority": "IRC 2021 Appendix AF",
      "section": "AF103.5.3",
      "value": "12",
      "unit": "inches",
      "applies_to": "new construction",
      "verification_tier": "filled-circle",
      "source_url": "https://codes.iccsafe.org/content/IRC2021P1/appendix-af-radon-control-methods",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-034",
      "record_type": "clearance_specification",
      "component_id": "EX12",
      "component_name": "Exterior wall route",
      "topic": "exhaust and termination",
      "requirement_text": "At least 6 inches above roof edge where piping runs up exterior wall.",
      "authority": "SGM-SF-2023",
      "section": "6.4.10(b)",
      "value": "6",
      "unit": "inches",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-035",
      "record_type": "clearance_specification",
      "component_id": "EX13",
      "component_name": "Flat-roof termination",
      "topic": "exhaust and termination",
      "requirement_text": "At least 18 inches above flat roof.",
      "authority": "SGM-SF-2023",
      "section": "6.4.10(c)",
      "value": "18",
      "unit": "inches",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-036",
      "record_type": "clearance_specification",
      "component_id": "EX14",
      "component_name": "Wall above roof",
      "topic": "exhaust and termination",
      "requirement_text": "At least 4 feet horizontally from vertical wall extending above roof edge.",
      "authority": "SGM-SF-2023",
      "section": "6.4.10(d)",
      "value": "4",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-037",
      "record_type": "clearance_specification",
      "component_id": "EX15",
      "component_name": "Wall above roof",
      "topic": "exhaust and termination",
      "requirement_text": "At least 10 feet horizontally from wall extending above roof penetrated.",
      "authority": "CCAH-2020-0523",
      "section": "601.2(3)",
      "value": "10",
      "unit": "feet",
      "applies_to": "new construction",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/CCAH-2020-0523/index.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-038",
      "record_type": "clearance_specification",
      "component_id": "EX16",
      "component_name": "Wall above roof",
      "topic": "exhaust and termination",
      "requirement_text": "At least 5 feet horizontally from vertical wall extending above roof.",
      "authority": "25 Pa. Code §240.308",
      "section": "240.308(b)(5)",
      "value": "5",
      "unit": "feet",
      "applies_to": "Pennsylvania existing residential",
      "verification_tier": "star",
      "source_url": "https://www.pacodeandbulletin.gov/secure/pacode/data/025/chapter240/s240.308.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-039",
      "record_type": "clearance_specification",
      "component_id": "EX17",
      "component_name": "Mechanical air intake",
      "topic": "exhaust and termination",
      "requirement_text": "At least 3 feet above or 10 feet away from mechanical air intake.",
      "authority": "CCAH-2020-0523",
      "section": "601.4",
      "value": "3 above / 10 away",
      "unit": "feet",
      "applies_to": "new construction",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/CCAH-2020-0523/index.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-040",
      "record_type": "clearance_specification",
      "component_id": "EX18",
      "component_name": "Discharge direction",
      "topic": "exhaust and termination",
      "requirement_text": "Upward without obstruction, no more than 45 degrees from vertical; no downward exhaust.",
      "authority": "SGM-SF-2023",
      "section": "6.4.9",
      "value": "45",
      "unit": "degrees",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-041",
      "record_type": "clearance_specification",
      "component_id": "EX19",
      "component_name": "Discharge direction",
      "topic": "exhaust and termination",
      "requirement_text": "Directed vertically upward outdoors.",
      "authority": "CCAH-2020-0523",
      "section": "601.1",
      "value": "",
      "unit": "",
      "applies_to": "new construction",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/CCAH-2020-0523/index.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-042",
      "record_type": "clearance_specification",
      "component_id": "EX20",
      "component_name": "Directional spread",
      "topic": "exhaust and termination",
      "requirement_text": "A 45-degree directional spread must not encounter openings, materials, or occupied breathing space within 10 feet.",
      "authority": "SGM-SF-2023",
      "section": "6.4.3",
      "value": "45 / 10",
      "unit": "degrees / feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-043",
      "record_type": "clearance_specification",
      "component_id": "EX21",
      "component_name": "Straight-line trajectory",
      "topic": "exhaust and termination",
      "requirement_text": "An 11-degree straight-line trajectory must remain clear for 20 feet.",
      "authority": "SGM-SF-2023",
      "section": "6.4.4",
      "value": "11 / 20",
      "unit": "degrees / feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-044",
      "record_type": "clearance_specification",
      "component_id": "EX22",
      "component_name": "Below-roof exception",
      "topic": "exhaust and termination",
      "requirement_text": "Permitted only with recorded justification, at least 20 feet above grade, at least 4 feet from operable openings above it, and required testing in adjoining occupiable area.",
      "authority": "SGM-SF-2023",
      "section": "6.4.11",
      "value": "20 / 4",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-045",
      "record_type": "clearance_specification",
      "component_id": "EX23",
      "component_name": "Horizontal exhaust",
      "topic": "exhaust and termination",
      "requirement_text": "A 90-degree horizontal exhaust passing the roof edge must be at least 20 feet above grade.",
      "authority": "SGM-SF-2023",
      "section": "6.4.12.1",
      "value": "20",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-046",
      "record_type": "clearance_specification",
      "component_id": "EX24",
      "component_name": "Diffused horizontal discharge",
      "topic": "exhaust and termination",
      "requirement_text": "At least 15 feet above grade and at least 4 feet above or 15 feet away from operable openings.",
      "authority": "SGM-SF-2023",
      "section": "6.4.12.2",
      "value": "15 / 4 / 15",
      "unit": "feet",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/wp-content/uploads/2024/07/SGM-2023-Technical-Bulletin-and-Migration-from-RMS-MF.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-047",
      "record_type": "clearance_specification",
      "component_id": "EX25",
      "component_name": "Animal screen",
      "topic": "exhaust and termination",
      "requirement_text": "Screen mesh dimension at least 0.5 inch.",
      "authority": "CCAH-2020-0523",
      "section": "601.1",
      "value": "0.5",
      "unit": "inch",
      "applies_to": "new construction",
      "verification_tier": "star",
      "source_url": "https://standards.aarst.org/CCAH-2020-0523/index.html",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-048",
      "record_type": "performance_range",
      "component_id": "T01",
      "component_name": "Sub-slab suction",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 50–99 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "50–99",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Works best where air moves easily in material under slab."
    },
    {
      "record_id": "RMS-049",
      "record_type": "performance_range",
      "component_id": "T02",
      "component_name": "Passive sub-slab suction",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 30–70 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "30–70",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "May be more effective in cold climates; not as effective as active sub-slab suction."
    },
    {
      "record_id": "RMS-050",
      "record_type": "performance_range",
      "component_id": "T03",
      "component_name": "Drain-tile suction",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 50–99 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "50–99",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Can work with partial or complete drain-tile loops."
    },
    {
      "record_id": "RMS-051",
      "record_type": "performance_range",
      "component_id": "T04",
      "component_name": "Sump-hole suction",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 50–99 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "50–99",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Works best where air moves easily to the sump from under the slab."
    },
    {
      "record_id": "RMS-052",
      "record_type": "performance_range",
      "component_id": "T05",
      "component_name": "Block-wall suction",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 50–99 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "50–99",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Hollow-block walls only; requires sealing major openings."
    },
    {
      "record_id": "RMS-053",
      "record_type": "performance_range",
      "component_id": "T06",
      "component_name": "Crawl-space submembrane depressurization",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 50–99 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "50–99",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Less heat loss than natural ventilation in cold winter climates."
    },
    {
      "record_id": "RMS-054",
      "record_type": "performance_range",
      "component_id": "T07",
      "component_name": "Crawl-space natural ventilation",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 0–50 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "0–50",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Costs variable."
    },
    {
      "record_id": "RMS-055",
      "record_type": "performance_range",
      "component_id": "T08",
      "component_name": "Basement pressurization",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: 50–99 percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "50–99",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Works best with a tight basement isolated from outdoors and upper floors."
    },
    {
      "record_id": "RMS-056",
      "record_type": "performance_range",
      "component_id": "T09",
      "component_name": "Sealing radon entry routes",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: See condition percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "See condition",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Normally used with other techniques."
    },
    {
      "record_id": "RMS-057",
      "record_type": "performance_range",
      "component_id": "T10",
      "component_name": "Natural ventilation",
      "topic": "typical radon reduction",
      "requirement_text": "EPA-published typical reduction range: Variable / temporary percent.",
      "authority": "EPA Consumer’s Guide 2025",
      "section": "Radon Reduction of Various Mitigation Techniques",
      "value": "Variable / temporary",
      "unit": "percent",
      "applies_to": "existing",
      "verification_tier": "star",
      "source_url": "https://www.epa.gov/sites/default/files/2016-12/documents/2016_consumers_guide_to_radon_reduction.pdf",
      "verified_date": "2026-07-24",
      "notes": "Significant heated or cooled air loss."
    },
    {
      "record_id": "RMS-058",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA01",
      "component_name": "Chapter title",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Minimum Requirements for Radon Mitigation. As of July 1, 2026: Radon Mitigation Requirements.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "chapter title",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-059",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA02",
      "component_name": "Governing technical standard",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: EPA 402-R-93-078 and ASTM E2121; every should treated as shall. As of July 1, 2026: ANSI/AARST standards amended through 2025-08-01: SGM-SF-2023 and SGM-MFLB-2023.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.3",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-060",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA03",
      "component_name": "Passive-to-active conversion",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Not separately addressed. As of July 1, 2026: Credentialed specialist required.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.1(1)",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-061",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA04",
      "component_name": "Radon system modification",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Not defined. As of July 1, 2026: Defined; equivalent routine replacement excluded.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.2",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-062",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA05",
      "component_name": "Passive mitigation system",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: No in-line fan. As of July 1, 2026: No in-line fan; convective vent through conditioned space from suction pit to 12 inches above roof.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.2",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-063",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA06",
      "component_name": "Testing personnel",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Independent measurement professional not employed by same firm. As of July 1, 2026: Independent professional or homeowner, occupant, or responsible person.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.3(4)(d)(2)",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-064",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA07",
      "component_name": "Testing waiver and timing",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Testing procedure could be waived before work; otherwise post-test no sooner than one day. As of July 1, 2026: Testing requirements can be waived before work; otherwise post-test no sooner than one day and within 30 days.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.3(4)(d)",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-065",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA08",
      "component_name": "Performance requirement",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Below-4 pCi/L failure stated as enforcement ground. As of July 1, 2026: Affirmative below-4 pCi/L duty plus enforcement ground.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.3(4)(e); 44.7(21)",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-066",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA09",
      "component_name": "Passive installers",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: No express passive-system exemption. As of July 1, 2026: Passive-system installers expressly exempt.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.10(3)",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-067",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA10",
      "component_name": "Continuing education",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: 8 hours every other year. As of July 1, 2026: 8 hours biennially; 12 hours for dual measurement and mitigation credentials.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.9",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-068",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA11",
      "component_name": "Fees",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: $25 resident/$100 nonresident application; $150 initial; $150 or $40/system renewal. As of July 1, 2026: $25 application; $150 initial; $150 or $40/system over $200 renewal; $40 returned payment; $100 reinstatement.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.6",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-069",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA12",
      "component_name": "Applications",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Paper submission to Division of Environmental Health. As of July 1, 2026: Online licensing portal.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.4(1)",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-070",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA13",
      "component_name": "Records retention",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: 5 years. As of July 1, 2026: 5 years.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.8",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-071",
      "record_type": "iowa_rule_comparison",
      "component_id": "IA14",
      "component_name": "Penalty",
      "topic": "Iowa Chapter 44 change",
      "requirement_text": "Before July 1, 2026: Serious misdemeanor. As of July 1, 2026: Serious misdemeanor.",
      "authority": "Iowa Administrative Code 641—Chapter 44",
      "section": "44.11",
      "value": "",
      "unit": "",
      "applies_to": "Iowa",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/iac/chapter/03-18-2026.641.44.pdf | https://www.legis.iowa.gov/docs/iac/chapter/06-10-2026.641.44.pdf",
      "verified_date": "2026-07-24",
      "notes": ""
    },
    {
      "record_id": "RMS-072",
      "record_type": "legal_status",
      "component_id": "IA15",
      "component_name": "New-construction passive radon requirement",
      "topic": "Iowa state building code",
      "requirement_text": "Iowa Acts Chapter 1124 directs adoption of a 2021 IRC Appendix AF passive method for new one- and two-family construction commenced after adoption. The published July 8, 2026 Chapter 301 still deletes residential-code appendices AA through CH and contains no radon provision.",
      "authority": "Iowa Acts Ch. 1124; Iowa Administrative Code 481—Chapter 301",
      "section": "Iowa Code 103A.8E; 481—301.8(12)",
      "value": "",
      "unit": "",
      "applies_to": "Iowa new construction",
      "verification_tier": "star",
      "source_url": "https://www.legis.iowa.gov/docs/publications/iactc/91.2/CH1124.pdf | https://www.legis.iowa.gov/docs/iac/chapter/07-08-2026.481.301.pdf",
      "verified_date": "2026-07-24",
      "notes": "Project-specific applicability requires the current code and governing authority."
    }
  ]
}