{
  "schema_version": 1,
  "source_compilation_context": {
    "va": {
      "attribution": {
        "inventory": {
          "name": "Compute Atlas",
          "creator": "Edward Kubiak",
          "url": "https://www.compute-atlas.com/api",
          "license": "CC BY 4.0",
          "license_url": "https://creativecommons.org/licenses/by/4.0/",
          "snapshot_url": "https://www.compute-atlas.com/api/facilities",
          "retrieved": "2026-10-14",
          "sha256": "79ad432dab7c128e428234c9d0dd40933114b415a4a5d697db00095637d50f37",
          "changes": "Added provenance, publication-date distinctions, display-safe wording, quarantine flags and state partitioning. Original source records retained locally."
        },
        "counties": "U.S. Census Bureau county boundaries (public domain)",
        "research": "Field-specific source context. See the linked source and limits on each record."
      },
      "source_data_url": "https://datacentersatlas.com/data/va.json",
      "updated": "2026-10-25"
    }
  },
  "scope": "Exact retained city label subset. This is not a municipal boundary or complete city inventory. Research records retain their sources, dates and location limits. Counts are not a census of operating buildings. Company name links alone do not establish ownership or operation.",
  "collection": {
    "kind": "cities",
    "key": "va/herndon",
    "label": "Herndon, Virginia"
  },
  "records": [
    {
      "id": "h5-herndon-springpark-va",
      "state": "va",
      "kind": "facility",
      "name": "H5 Herndon Springpark campus",
      "group": "operating",
      "status": "Operating phase",
      "crypto": false,
      "type": "Colocation (operator description)",
      "counties": [
        "Fairfax"
      ],
      "city": "Herndon",
      "address": "480 Springpark Pl, Herndon, VA 20170",
      "who": "H5 Data Centers",
      "mw": null,
      "power": "",
      "power_note": "",
      "investment": "",
      "jobs": "",
      "acres": null,
      "utility": "",
      "water": "",
      "incentives": "",
      "note": "H5 Herndon campus at 470 and 480 Springpark Place; DEQ registration references 470. The two street numbers describe a campus, not evidence for two separate sites. The 15 critical MW accommodation claim is not a metered reading or confirmation that all potential capacity is installed.",
      "date": "",
      "events": [],
      "timeline": [],
      "opened": "",
      "tier": "",
      "sources": [
        {
          "url": "https://h5datacenters.com/herndon-data-center.html",
          "host": "h5datacenters.com",
          "published": "",
          "date": "",
          "checked": "2026-10-15",
          "label": "Reviewed operator source"
        },
        {
          "url": "https://gisdata.deq.virginia.gov/arcgis/rest/services/public/EDMA/MapServer/294/query?where=PLA_DATA_CENTER_YN%3D%27Y%27&f=json&outFields=%2A&outSR=4326&returnGeometry=true&orderByFields=OBJECTID&resultRecordCount=1000",
          "host": "gisdata.deq.virginia.gov",
          "published": "",
          "date": "",
          "checked": "2026-10-15",
          "label": "Virginia DEQ air-site registry"
        }
      ],
      "loc": {
        "lat": 38.96244,
        "lng": -77.37666,
        "precision": "approximate",
        "basis": "Virginia DEQ air-site map point for the general area; no parcel or building center was independently verified",
        "source_url": "https://gisdata.deq.virginia.gov/arcgis/rest/services/public/EDMA/MapServer/294/query?where=PLA_DATA_CENTER_YN%3D%27Y%27&f=json&outFields=%2A&outSR=4326&returnGeometry=true&orderByFields=OBJECTID&resultRecordCount=1000"
      },
      "manual_source_reviewed": true,
      "whole_record_certified": false,
      "field_evidence_present": true,
      "inventory_label_retained": false,
      "precision_label": "Approximate location, not the exact parcel",
      "summary": "Fairfax County · Virginia DEQ registration 73170",
      "reviewed_evidence": [
        {
          "overlay": "S2-Virginia-DEQ-20261015",
          "scope": "H5 Herndon campus at 470 and 480 Springpark Place; DEQ registration references 470.",
          "fields": {
            "agency_registration_number": "73170",
            "agency_air_operational_status": "Operating",
            "agency_registered_address": "470 Spring Park Pl Ste 1000, Herndon, VA, 20170",
            "agency_principal_product": "Internet Web Hosting",
            "published_address": "480 Springpark Pl, Herndon, VA 20170",
            "current_status": "partly operating",
            "operator_advertised_accommodation_critical_mw": 15
          },
          "notes": [
            "The two street numbers describe a campus, not evidence for two separate sites. The 15 critical MW accommodation claim is not a metered reading or confirmation that all potential capacity is installed.",
            "The DEQ dataset warns of source errors, collection-scale and currency limits. A registration operational classification is separate from an issued permit, whole-campus completion and parcel precision."
          ],
          "sources": [
            {
              "url": "https://h5datacenters.com/herndon-data-center.html",
              "host": "h5datacenters.com",
              "published": "",
              "date": "",
              "checked": "2026-10-15",
              "label": "Reviewed operator source"
            },
            {
              "url": "https://gisdata.deq.virginia.gov/arcgis/rest/services/public/EDMA/MapServer/294/query?where=PLA_DATA_CENTER_YN%3D%27Y%27&f=json&outFields=%2A&outSR=4326&returnGeometry=true&orderByFields=OBJECTID&resultRecordCount=1000",
              "host": "gisdata.deq.virginia.gov",
              "published": "",
              "date": "",
              "checked": "2026-10-15",
              "label": "Virginia DEQ air-site registry"
            }
          ],
          "checked": "2026-10-15",
          "whole_record_certified": false
        },
        {
          "overlay": "Company role source check56, October24,2026",
          "scope": "H5 Data Centers identifies this named Herndon site or retained campus in the main body of its own location page. The relationship records the H5 Data Centers provider brand only. Existing who value and its complete source wrapper remain exact. The service street is identity context only and does not newly admit a location, parcel or roof. Existing status, location, address, county, quantities, dates and component identity remain exact. Advertised capacity, utility availability, prices, renewable supply, certification, performance, security and environmental marketing are not independently verified measurements, legal title or environmental outcomes. Public cloud connectivity does not identify every tenant or a different operator. Customer testimonials and their names are not retained as research claims. The source publication date is unknown. The main body identifies a campus at470and480SpringparkPlace while the contact block uses480. The existing combined campus record remains combined; no roof or building is selected and the advertised campus power is not per building.",
          "fields": {
            "company_association": {
              "name": "H5 Data Centers",
              "role": "operator",
              "identity_scope": "provider_brand_only",
              "scope": "H5 Data Centers identifies this named Herndon site or retained campus in the main body of its own location page. The relationship records the H5 Data Centers provider brand only. Existing who value and its complete source wrapper remain exact. The service street is identity context only and does not newly admit a location, parcel or roof. Existing status, location, address, county, quantities, dates and component identity remain exact. Advertised capacity, utility availability, prices, renewable supply, certification, performance, security and environmental marketing are not independently verified measurements, legal title or environmental outcomes. Public cloud connectivity does not identify every tenant or a different operator. Customer testimonials and their names are not retained as research claims. The source publication date is unknown. The main body identifies a campus at470and480SpringparkPlace while the contact block uses480. The existing combined campus record remains combined; no roof or building is selected and the advertised campus power is not per building."
            },
            "provider_role": "operator"
          },
          "notes": [
            "H5 Data Centers identifies this named Herndon site or retained campus in the main body of its own location page. The relationship records the H5 Data Centers provider brand only. Existing who value and its complete source wrapper remain exact. The service street is identity context only and does not newly admit a location, parcel or roof. Existing status, location, address, county, quantities, dates and component identity remain exact. Advertised capacity, utility availability, prices, renewable supply, certification, performance, security and environmental marketing are not independently verified measurements, legal title or environmental outcomes. Public cloud connectivity does not identify every tenant or a different operator. Customer testimonials and their names are not retained as research claims. The source publication date is unknown. The main body identifies a campus at470and480SpringparkPlace while the contact block uses480. The existing combined campus record remains combined; no roof or building is selected and the advertised campus power is not per building."
          ],
          "sources": [
            {
              "url": "https://h5datacenters.com/herndon-data-center.html",
              "host": "h5datacenters.com",
              "published": "",
              "date": "",
              "checked": "2026-10-24",
              "label": "Reviewed operator source"
            }
          ],
          "checked": "2026-10-24",
          "whole_record_certified": false
        }
      ],
      "raw_status": "partly operating",
      "status_field": "current_status",
      "status_scope": "H5 Herndon campus at 470 and 480 Springpark Place; DEQ registration references 470."
    },
    {
      "id": "smithsonian-herndon-va",
      "state": "va",
      "kind": "facility",
      "name": "Smithsonian Herndon data center",
      "group": "operating",
      "status": "Agency-listed operating",
      "crypto": false,
      "type": "Data center (agency classification)",
      "counties": [
        "Fairfax"
      ],
      "city": "Herndon",
      "address": "380 Herndon Pky, Herndon, VA, 20170",
      "who": "",
      "mw": null,
      "power": "",
      "power_note": "",
      "investment": "",
      "jobs": "",
      "acres": null,
      "utility": "",
      "water": "",
      "incentives": "",
      "note": "Agency-designated Smithsonian Herndon data-center air registration. DEQ labels both principal product and source description Data Center and reports the air site as Operating. This is an agency-listed research record; no operator survey, legal ownership, capacity or parcel confirmation is asserted.",
      "date": "",
      "events": [],
      "timeline": [],
      "opened": "",
      "tier": "",
      "sources": [
        {
          "url": "https://gisdata.deq.virginia.gov/arcgis/rest/services/public/EDMA/MapServer/294/query?where=PLA_DATA_CENTER_YN%3D%27Y%27&f=json&outFields=%2A&outSR=4326&returnGeometry=true&orderByFields=OBJECTID&resultRecordCount=1000",
          "host": "gisdata.deq.virginia.gov",
          "published": "",
          "date": "",
          "checked": "2026-10-15",
          "label": "Virginia DEQ air-site registry"
        },
        {
          "url": "https://echodata.epa.gov/echo/echo_rest_services.get_facilities?p_ncs=518210&output=JSON&responseset=1000&tablelist=Y&maplist=N&summarylist=Y&qcolumns=1%2C2%2C3%2C4%2C5%2C6%2C7%2C17%2C15%2C19%2C20%2C21%2C23%2C24%2C32%2C97%2C88%2C89%2C90%2C93%2C144%2C106%2C108%2C100",
          "host": "echodata.epa.gov",
          "published": "",
          "date": "",
          "checked": "2026-10-15",
          "label": "Reviewed government record"
        }
      ],
      "loc": {
        "lat": 38.962193,
        "lng": -77.372595,
        "precision": "approximate",
        "basis": "Virginia DEQ air-site map point for the general area; no parcel or building center was independently verified",
        "source_url": "https://gisdata.deq.virginia.gov/arcgis/rest/services/public/EDMA/MapServer/294/query?where=PLA_DATA_CENTER_YN%3D%27Y%27&f=json&outFields=%2A&outSR=4326&returnGeometry=true&orderByFields=OBJECTID&resultRecordCount=1000"
      },
      "manual_source_reviewed": true,
      "whole_record_certified": false,
      "field_evidence_present": true,
      "inventory_label_retained": false,
      "precision_label": "Approximate location, not the exact parcel",
      "summary": "Fairfax County · Virginia DEQ registration 74039",
      "reviewed_evidence": [
        {
          "overlay": "S2-Virginia-DEQ-20261015",
          "scope": "Agency-designated Smithsonian Herndon data-center air registration.",
          "fields": {
            "agency_registration_number": "74039",
            "agency_air_operational_status": "Operating",
            "agency_registered_address": "380 Herndon Pky, Herndon, VA, 20170",
            "agency_principal_product": "Data Center",
            "current_status": "operating",
            "epa_frs_registry_id": "110055610101",
            "identity_link_basis": "Exact federal air-system identifier matches DEQ registration: VA0000005105901122"
          },
          "notes": [
            "DEQ labels both principal product and source description Data Center and reports the air site as Operating. This is an agency-listed research record; no operator survey, legal ownership, capacity or parcel confirmation is asserted.",
            "The DEQ dataset warns of source errors, collection-scale and currency limits. A registration operational classification is separate from an issued permit, whole-campus completion and parcel precision."
          ],
          "sources": [
            {
              "url": "https://gisdata.deq.virginia.gov/arcgis/rest/services/public/EDMA/MapServer/294/query?where=PLA_DATA_CENTER_YN%3D%27Y%27&f=json&outFields=%2A&outSR=4326&returnGeometry=true&orderByFields=OBJECTID&resultRecordCount=1000",
              "host": "gisdata.deq.virginia.gov",
              "published": "",
              "date": "",
              "checked": "2026-10-15",
              "label": "Virginia DEQ air-site registry"
            },
            {
              "url": "https://echodata.epa.gov/echo/echo_rest_services.get_facilities?p_ncs=518210&output=JSON&responseset=1000&tablelist=Y&maplist=N&summarylist=Y&qcolumns=1%2C2%2C3%2C4%2C5%2C6%2C7%2C17%2C15%2C19%2C20%2C21%2C23%2C24%2C32%2C97%2C88%2C89%2C90%2C93%2C144%2C106%2C108%2C100",
              "host": "echodata.epa.gov",
              "published": "",
              "date": "",
              "checked": "2026-10-15",
              "label": "Reviewed government record"
            }
          ],
          "checked": "2026-10-15",
          "whole_record_certified": false
        }
      ],
      "raw_status": "operating",
      "status_field": "current_status"
    }
  ],
  "compilation_license": "withheld_pending_owner_decision"
}