{
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 "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.",
 "entity": {
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  "id": "kansas-city-smart-sewer",
  "title": "Smart Sewer: A Federal Consent Decree with a Sensor Network Attached",
  "canonicalUrl": "https://1001smartcities.org/projects/kansas-city-smart-sewer/"
 },
 "currentRevisionId": "2026-08-20-source-dates",
 "revisions": [
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   "id": "2026-08-19-baseline",
   "createdAt": "2026-08-19T00:00:00Z",
   "effectiveAt": "2026-08-19",
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   "summary": "Created the first structured Evidence Passport with 11 claims and 6 source dossiers.",
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   },
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    "date": null,
    "note": "Awaiting operator and domain-expert review; publication of this revision implies neither."
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     "operation": "add",
     "path": "/evidencePassport",
     "summary": "Added claim-level evidence mapping and source dossiers."
    },
    {
     "operation": "add",
     "path": "/revisionHistory",
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     "evidenceGrade": "official",
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      "ended": null
     }
    },
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     "operator": "KC Water (City of Kansas City, Missouri), with Burns & McDonnell as programme manager and EmNet as sensor-network partner",
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      "national-government"
     ],
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     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
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      "text": "In May 2010 the United States sued Kansas City over an annual discharge of approximately 6.5 billion gallons of untreated sewage into waters of the United States",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "text": "originally estimated to exceed $2.5 billion over 25 years",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "text": "about 300 sensors deployed throughout Kansas City's 318 square miles measure water depth and flow in the sewer systems",
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       "added": false,
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "snippet",
      "text": "the utility says the readings feed a decision support system used to operate the gates that hold stormwater back during a storm",
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      "field": "snippet",
      "text": "A third amended consent decree extended the final compliance date from 2035 to 2040",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "impact",
      "text": "capture of combined sewer overflows has risen from 45% to 68.5%, exceeding the 2024 milestone of 66%",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "impact",
      "text": "a decree requirement of 77% by 2035 and a final target of 85% by 2040",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "title": "US EPA — Kansas City, Missouri Clean Water Act Settlement",
      "url": "https://www.epa.gov/enforcement/kansas-city-missouri-clean-water-act-settlement",
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      "title": "City of Kansas City — Smart Sewer: 15 Years of Progress",
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       "value": "The city's Smart Sewer site blocks automated retrieval (Akamai 403); the capture figures were confirmed through the indexed page text.",
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      "title": "Smart Cities Dive — Kansas City, MO's Smart Sewer Program cuts back-ups, overflows",
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     },
     {
      "id": "src-b1056fc0e862d5ee",
      "title": "KSHB 41 — How Kansas City is using technology in sewers to detect overflows",
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       "recordLastVerifiedAt": "2026-08-19",
       "dossierCreatedAt": "2026-08-19",
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       "status": "record-date-only"
      },
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       "value": null,
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
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    ],
    "coverage": {
     "claimsTotal": 11,
     "claimsMapped": 11,
     "sourcesTotal": 6,
     "sourcesUsedByClaims": 6,
     "sourcesWithPublicationDate": 0,
     "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."
    ]
   }
  },
  {
   "id": "2026-08-20-source-dates",
   "createdAt": "2026-08-20T00:00:00Z",
   "effectiveAt": "2026-08-19",
   "changeType": "update",
   "summary": "Recorded the two dates each source states: publication where it gives one, revision where it gives that instead. The EPA settlement page and the consultant's project page state no publication date at all; the city's own Smart Sewer page stays unanswered because it refuses every automated client.",
   "preparedBy": {
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    "note": "Awaiting operator and domain-expert review; publication of this revision implies neither."
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     "path": "/snapshot/projectFingerprint",
     "summary": "Updated projectFingerprint to the current sourced project record."
    },
    {
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     "path": "/snapshot/sources",
     "summary": "Updated sources to the current sourced project record."
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     "status": "unreviewed",
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     "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.",
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     "evidenceGrade": "official",
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     "operator": "KC Water (City of Kansas City, Missouri), with Burns & McDonnell as programme manager and EmNet as sensor-network partner",
     "actorTypes": [
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      "utility",
      "national-government"
     ],
     "fundingModel": "utility",
     "fundingDescription": "Wastewater ratepayers under a federal consent decree; the city intends to raise rates 6 percent or less annually",
     "cost": null,
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
     {
      "id": "clm-5524e052e146f68d",
      "field": "snippet",
      "text": "In May 2010 the United States sued Kansas City over an annual discharge of approximately 6.5 billion gallons of untreated sewage into waters of the United States",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
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      "supportNote": "The EPA settlement page announces the case in May 2010 and states the annual discharge of approximately 6.5 billion gallons of untreated sewage into waters of the United States.",
      "caveat": null,
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "snippet",
      "text": "a $600,000 civil penalty",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
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      "supportNote": "The settlement required payment of a $600,000 civil penalty to the U.S. Treasury within 30 days.",
      "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-d83f1924cfa9426c",
      "field": "snippet",
      "text": "originally estimated to exceed $2.5 billion over 25 years",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
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      ],
      "supportNote": "EPA put the cost of the required work at more than $2.5 billion over 25 years at the time of the settlement.",
      "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-42ac59fa8ea3c346",
      "field": "snippet",
      "text": "now planned as a 25-year, $4.5 billion – $5 billion program",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
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      "supportNote": "KC Water describes the programme as originally planned as a 25-year, $4.5 billion to $5 billion program; Burns & McDonnell, its programme manager, gives $4.5 billion.",
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      "text": "about 300 sensors deployed throughout Kansas City's 318 square miles measure water depth and flow in the sewer systems",
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    },
    "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."
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  }
 ]
}