{ "schemaVersion": "1.0.0", "constitutionVersion": "1.0.0", "createdAt": "2026-08-12T00:00:00Z", "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.", "entity": { "type": "project", "id": "mumbai-construction-air-sensors", "title": "Mandatory Air Quality Sensors at Mumbai Construction Sites", "canonicalUrl": "https://1001smartcities.org/projects/mumbai-construction-air-sensors/" }, "currentRevisionId": "2026-08-28-baseline", "revisions": [ { "id": "2026-08-28-baseline", "createdAt": "2026-08-27T01:08:46Z", "effectiveAt": "2026-07-26", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 10 claims and 6 source dossiers.", "preparedBy": { "type": "automation", "label": "AI-assisted evidence preparation", "humanApproved": false }, "review": { "status": "unreviewed", "by": null, "date": null, "note": "Awaiting operator and domain-expert review; publication of this revision implies neither." }, "changes": [ { "operation": "add", "path": "/evidencePassport", "summary": "Added claim-level evidence mapping and source dossiers." }, { "operation": "add", "path": "/revisionHistory", "summary": "Established a permanent, hash-addressed baseline revision." } ], "snapshotHash": "sha256:012a4d925c73bb59d17b8440417cfef9d37bb69ad6f8e0bca5b493efcccc3868", "snapshot": { "asOf": "2026-07-26", "projectFingerprint": "sha256:03af47c52ad99fff0cda60a33ac9a01618c8dc6055673ded6823eab628673c1d", "assurance": { "status": "unreviewed", "scope": "evidence-passport-revision", "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.", "machineChecks": [ "schema", "publication-diff-contract", "material-project-fingerprint", "claim-text-drift", "source-reference-resolution", "complete-source-dossier", "snapshot-hash" ] }, "projectState": { "status": "live", "outcome": "ongoing", "evidenceGrade": "official", "timeline": { "started": 2023, "ended": null } }, "governance": { "operator": "Brihanmumbai Municipal Corporation (BMC)", "actorTypes": [ "city-government" ], "fundingModel": "mixed", "fundingDescription": null, "cost": null, "ownership": null, "decisionRights": null, "exitConditions": null }, "claims": [ { "id": "clm-5448fb9c69111b5c", "field": "snippet", "text": "Construction dust is the largest single source of Mumbai's air pollution", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-9bd068f08436f947" ], "supportNote": "Free Press Journal: the dust generated through construction activities in the city is the major source of air pollution in Mumbai, with bakeries and industries the other major sources.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-f1384707db8b6829", "field": "snippet", "text": "The rules were widely ignored until the Bombay High Court criticised the corporation in January 2025 and ordered that every site be equipped; the BMC then floated an expression of interest to standardise and shortlist low-cost sensor models", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-9bd068f08436f947" ], "supportNote": "Free Press Journal, February 2025: of around 2,000 ongoing construction sites under the corporation's jurisdiction not more than 40 per cent had sensors installed, although installation was already mandatory in the construction permission guidelines; the expression of interest, aiming to shortlist ten suppliers and lay down a standardised procedure and technology, followed the High Court slamming the corporation the previous month and directing it to ensure all sites had sensors.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-ee9b55a656dbf451", "field": "snippet", "text": "in an affidavit reported in January 2026 the BMC told the court that 662 of roughly 1,954 active sites had not installed the mandatory monitor", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-c39d55ff40b77c86" ], "supportNote": "PropNewsTime, 23 January 2026, on the corporation's affidavit to the Bombay High Court: 662 construction sites in Mumbai have not installed the mandatory sensor-based air quality monitors, out of around 1,954 ongoing projects.", "caveat": "The same figure of 662 appears two months earlier in Free Press Journal as the number of sensors installed across the city, of which 400 were dashboard-linked. Whether one report transposed the other could not be resolved from these sources; the affidavit reading is the one given here because it is attributed to the corporation's own filing.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-b8229374bf19e8f4", "field": "impact", "text": "The corporation reported 44% compliance with its 28-point dust rules and issued 62 stop-work notices during a citywide drive in November 2025, when a 95-ward inspection found 117 sensors inactive and 400 of the installed monitors connected to the air quality dashboard", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-a157011441e1bf72" ], "supportNote": "Free Press Journal, 27 November 2025: stop-work notices to 62 construction sites; a 95-ward inspection found 117 sensors inactive with only 44% of developers complying since the June directive; and of the sensors installed across Mumbai, 400 are linked to the city's air quality dashboard.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-53499d7c43f84e38", "field": "impact", "text": "In December the corporation told the Bombay High Court its own device data showed pollution falling; the judges noted that a third of the monitoring devices were either not working or had no data, and asked it to sanction no new development for two weeks", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-912a4cb8864f0787" ], "supportNote": "LiveLaw, 24 December 2025: senior counsel for the corporation submitted details of the AQI monitoring devices installed across Mumbai and claimed the data indicated pollution levels had decreased since last year; the judges noted that a third of the monitoring devices were either not working or had no data available; and the bench orally asked the civic body not to sanction new development proposals for at least two weeks.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-1a48cc6e7cd97adb", "field": "impact", "text": "The affidavit that followed said 662 of about 1,954 active sites had not installed a monitor, with 409 show-cause and 284 stop-work notices issued and 94 ward-level teams deployed", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-c39d55ff40b77c86" ], "supportNote": "PropNewsTime on the affidavit: 662 of around 1,954 active sites without the mandatory monitors, 409 show-cause notices and 284 stop-work notices for breaches of the 28-point guidelines, and 94 ward-level teams deployed to strengthen enforcement.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-1a4cc5db99ed7a2d", "field": "impact", "text": "For comparison, the regulatory network the city's own AQI is calculated from is 30 stations", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4e9f3a3322e6abab" ], "supportNote": "Citizen Matters: the data for calculating the city's AQI is collected from 30 air quality monitoring stations set up by three agencies — five by the corporation, nine by the Indian Institute of Tropical Meteorology and sixteen by the state pollution control board.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-1a3e2f829d06d244", "field": "lesson", "text": "fewer than 40% of about 2,000 sites had a sensor when the corporation went shopping for approved models, a month after the judges criticised it", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-9bd068f08436f947" ], "supportNote": "Free Press Journal: around 2,000 ongoing construction sites under the corporation's jurisdiction, of which not more than 40 per cent had air quality sensors installed; the expression of interest followed the High Court's criticism the previous month.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-114e60c4dcdddb60", "field": "lesson", "text": "a third of the devices were not working or had no data on the day the corporation came to court to say the air had improved", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-912a4cb8864f0787" ], "supportNote": "LiveLaw records both halves in the same hearing: counsel's claim that the device data showed pollution decreasing, and the judges' observation that a third of the devices were either not working or had no data available.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-56d712ca1af5ee26", "field": "lesson", "text": "a ward-level graded response in which fifty construction and concrete plants were shut in the worst-hit wards while flying squads with GPS-tracked vehicles toured the rest", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-642aa7533ac05279" ], "supportNote": "Business Standard, 1 December 2025: the corporation enforced the strictest level of its graded response in neighbourhoods recording 'very poor' to 'severe' air quality, issued stop-work or shutdown notices to 50 construction and ready-mix concrete sites in the worst-hit wards, and deployed special flying squads of engineers, police teams and GPS-enabled vehicles inspecting every ward.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } } ], "sources": [ { "id": "src-9bd068f08436f947", "title": "Free Press Journal — BMC floats EOI for low-cost air quality sensors at construction sites", "url": "https://www.freepressjournal.in/mumbai/mumbai-construction-sites-to-mandatorily-install-air-quality-sensors-as-bmc-floats-eoi-for-low-cost-pollution-devices", "publisher": { "name": null, "domain": "freepressjournal.in", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-5448fb9c69111b5c", "clm-f1384707db8b6829", "clm-1a3e2f829d06d244" ], "temporal": { "publishedAt": "2025-02-27", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-28", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "BMC environment department shortlisting low-cost sensor suppliers after the High Court criticised its approach; about 2,000 construction sites under BMC jurisdiction, then under 40% compliant.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-a157011441e1bf72", "title": "Free Press Journal — BMC issues stop-work notices to 62 construction sites (27 Nov 2025)", "url": "https://www.freepressjournal.in/mumbai/mumbai-news-bmc-issues-stop-work-notices-to-62-construction-sites-for-air-pollution-violations-launches-citywide-dust-mitigation-drive", "publisher": { "name": null, "domain": "freepressjournal.in", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-b8229374bf19e8f4" ], "temporal": { "publishedAt": "2025-11-27", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-28", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Carries the impact figures: 62 stop-work notices, 44% compliance with the 28-point dust rules, 117 inactive sensors found across 95 wards, about 400 sensors linked to the air quality dashboard.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-c39d55ff40b77c86", "title": "PropNewsTime — Mumbai civic body flags 662 construction sites for missing air quality monitors (23 Jan 2026)", "url": "https://propnewstime.com/getdetailsStories/MjUzOTM=/mumbai-civic-body-flags-662-construction-sites-for-missing-air-quality-monitors", "publisher": { "name": null, "domain": "propnewstime.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-ee9b55a656dbf451", "clm-1a48cc6e7cd97adb" ], "temporal": { "publishedAt": "2026-01-23", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-28", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Based on the BMC's December affidavit to the Bombay High Court: 662 of about 1,954 active sites without working monitors, 409 show-cause and 284 stop-work notices, 94 ward-level enforcement teams. Trade press, but the only fetchable account of the affidavit.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-912a4cb8864f0787", "title": "LiveLaw — Bombay High Court pulls up BMC over Mumbai air pollution (24 Dec 2025)", "url": "https://www.livelaw.in/high-court/bombay-high-court/mumbai-air-pollution-dont-permit-new-projects-for-2-weeks-514401", "publisher": { "name": null, "domain": "livelaw.in", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-53499d7c43f84e38", "clm-114e60c4dcdddb60" ], "temporal": { "publishedAt": "2025-12-24", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-28", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Legal press. Confirms the court's continuing supervision of BMC air pollution enforcement; the court threatened a two-week freeze on new project permissions.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-4e9f3a3322e6abab", "title": "Citizen Matters — Where can you access data on air quality in Mumbai?", "url": "https://citizenmatters.in/explainer-mumbai-air-quality-data-monitoring/", "publisher": { "name": null, "domain": "citizenmatters.in", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-1a4cc5db99ed7a2d" ], "temporal": { "publishedAt": "2025-01-07", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-28", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Independent explainer on the regulatory monitoring landscape: 30 fixed stations across BMC, IITM and the state pollution board, and about 13 public LED display boards. Context for how site-level sensors sit alongside the reference network.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-642aa7533ac05279", "title": "Business Standard — Mumbai enforces graded response measures as AQI worsens (1 Dec 2025)", "url": "https://www.business-standard.com/india-news/mumbai-grap-4-restrictions-poor-air-quality-delhi-aqi-pollution-125120100678_1.html", "publisher": { "name": null, "domain": "business-standard.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-56d712ca1af5ee26" ], "temporal": { "publishedAt": "2025-12-01", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-28", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Shows the enforcement escalation the sensor data feeds: ward-level graded response, 50 sites served shutdown notices, GPS-equipped flying squads inspecting every ward.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } } ], "coverage": { "claimsTotal": 10, "claimsMapped": 10, "sourcesTotal": 6, "sourcesUsedByClaims": 6, "sourcesWithPublicationDate": 6, "sourcesWithArchive": 0, "sourcesWithExactLocator": 0, "sourcesWithContentHash": 0 }, "limits": [ "Publisher names and source languages have not yet been classified; domains are recorded without guessing.", "Existing source notes are descriptive locators, not page- or paragraph-exact citations.", "A missing archive, publication date or content hash is shown as null rather than inferred.", "The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim." ] } } ] }