Permanent project revision
Revision 2026-08-27-p1-quality-uplift · effective 2026-08-27
Superseded. A later revision exists: 2026-08-27-correction-run →
Replaced the single legacy claim with a complete claim array covering every material assertion in snippet, impact and lesson; added a sourced lesson, dated the sources and replaced dead ones.
sha256:6d8087ec384795899ae21ef2bd751ddeef99aa9cd09c17d2f59b77067ede81f4
replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.replace /snapshot/asOf — Updated asOf to the current sourced project record.replace /snapshot/claims — Updated claims to the current sourced project record.replace /snapshot/sources — Updated sources to the current sourced project record.The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-7cea4b70c6b189f6
quantitative
About 40 continuous monitoring stations run by Delhi's pollution control committee, the central board and national research institutes feed an hourly Air Quality Index that is published publicly and through the SAMEER app
clm-e4567f923d423287
quantitative
Since 2017 that number has legal force: under the Graded Response Action Plan, defined AQI thresholds trigger escalating curbs across the capital region
clm-650d45388338575a
descriptive
A later revision extended the trigger to the forecast, so a stage can be invoked when the AQI is merely expected to cross a threshold under the dynamic model and the IMD/IITM weather forecast
clm-8c72c75f2bd87fdb
quantitative
the Commission for Air Quality Management tightened the schedule again in November 2025
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descriptive
Delhi's monitors have been accused of being sprayed with water or dropping offline at peak pollution
clm-a6ef3f1662b5b995
quantitative
In 2025, GRAP stages were invoked only after the AQI had already climbed past the threshold on 13 of 17 occasions (CEEW analysis)
clm-4f72c6560b841803
quantitative
extending it to the forecast was the right repair, and in 2025 the stages were still invoked after the air had already gone bad on 13 of 17 occasions
clm-82f4d012257980bc
descriptive
reporters found a public works tanker spraying water around the monitor in Jahangirpuri while the dust and debris beside it went untouched
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
Erratum on this revision's envelope. The snapshot, its hash and its permanent link are untouched.
sha256:6d8087ec384795899ae21ef2bd751ddeef99aa9cd09c17d2f59b77067ede81f4
src-6b8cccbc2b5d562dThe Commission’s own GRAP schedule. The host serves its single-page application shell to automated retrieval, so no publication date is recorded and no locating passage was read from it.
src-1df5e0db1641f943Most recent revision: measures moved into earlier stages. Confirms the regime is active and being tightened.
src-52d2ac68935cba3dA worked example of the trigger firing: AQI of 425 recorded at 9 AM, Stage-III restrictions imposed the same day by the CAQM GRAP sub-committee.
src-0c68ecb2bf3d340eDelhi environment department page on ambient air quality. The host resets the connection for automated retrieval, so no publication date is recorded.
src-984d07f3f118de2fThe government open-data catalogue entry for the SAMEER national AQI feed. A continuously maintained catalogue page, so it states no publication date.
src-55a046bc2ef1a0c0Peer-reviewed. Finds Stage I and II show measurable improvement but Stage III and IV little; concludes GRAP gives limited, meteorology-dependent short-term relief limited by reactive activation.
src-2d015e486f342f87Independent analysis carrying the count of late invocations. The host answers automated retrieval with HTTP 403, so no publication date is recorded and no locating passage was read from it.
src-47b937c11a0081ceReporters observed PWD tankers repeatedly watering the ground around monitors at Jahangirpuri and Anand Vihar; earlier reporting found stations sited behind trees and walls, against placement norms.
src-8a042af3cbd8544eGovernment release on the revised GRAP: actions are triggered when Delhi’s AQI goes beyond a threshold or is expected to go beyond it under the dynamic model and the IMD/IITM meteorological forecast.
src-955b0d09c6f30471Full text of the Act that constitutes the Commission administering GRAP. Replaces the India Code link for the same Act, which now returns 404.