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Pura Commercial & Contract Radar

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Supporting views
BUYER

The North Yorkshire Council

OPPORTUNITY

Remediation Works Langbaurgh Mineshaft

SOURCE: Contracts Finder · REFERENCE: 9b01f904-0173-46ec-8f64-eb8874dd1be0-917607
PUBLISHED: 13 Oct 2026 · 14:33 BST · LAST CHECKED: 1 Nov 2026 · 11:01 GMT

AWARDED / HISTORICAL — not an open bid · source freshness LAPSED

OPEN ORIGINAL SOURCE

Current accessibility UNVERIFIED — link retained; no live source check implied

Readable source details and context
Buyer
The North Yorkshire Council
Captured need / service scope
Langbaurgh Closed Landfill Site ('the site') is located on Langbaurgh Ridge, just north of Great Ayton,North Yorkshire. The site is a former Whinstone quarry, which was active from the early 1800s until 1964 and include surface and below ground workings. The site was used as a landfill between 1978 and 1991, infilling the excavation left by surface quarrying to a recorded depth of around 15m. Numerous shafts, adits and below ground voids are understood to underlie the site. The site boundaries are generally very steep, formed by the former quarry walls. One of the shafts near the western end of the site has previously collapsed and been remediated. However, further collapse of the shaft (and remediation) has occurred, forming a roughly circular surface depression above the shaft location. The depression is estimated (from remote surveying) to be 10-15m wide and approximately 6-8m deep. The scheme involves the remedial work for this collapsed mine shaft. The remedial solution adopted comprises the infilling of the existing depression with lightweight aggregates contained by a geotextile 'bag' and covering with a high-strength geogrid reinforced 'soft cap'. The design has been prog … [preview; original evidence retained]
Notice / signal type
AWARD
Publication
2026-10-13T14:33:24+01:00
Event date (when retained)
UNKNOWN
Deadline
2026-07-10T12:00:00+01:00
Retained verification / observation clock — no new source check implied
2026-11-01T11:01:55+00:00
Location
UNKNOWN
Published value / budget / rate
659464
Value meaning
TOTAL_NOTICE_NOT_PURA_ADDRESSABLE
Original reference
9b01f904-0173-46ec-8f64-eb8874dd1be0-917607
Exact proposed next action
NO GO
Responsible project for source / qualification reporting
P016
Intended delivery project / receiver — acceptance unverified
P016

Retained source reference: https://www.contractsfinder.service.gov.uk/Notice/9b01f904-0173-46ec-8f64-eb8874dd1be0

Published value is not Pura revenue or an authorised commitment. Source status is separate from owner approval and receiver execution.

ACTION OWNER: ANDREW
ANDREW ACTION: NO GO

STATUS
Owner review
OPPORTUNITY SCORE
0/100 · Research Required
ESTIMATED VALUE
£659,464 VAT basis not explicit in release
DEADLINE
10 Jul 2026 · 12:00 BST
PROCUREMENT / ENGAGEMENT STAGE
Restricted procedure
ROUTE
Research — verify participation route
LAST VERIFIED
1 Nov 2026 · 11:01 GMT
NEXT ACTION

Retain this record for reference; do not pursue it.

CURRENT STAGE: Owner review
WHAT HAPPENED: Radar last recorded source evidence.
WHAT IS HAPPENING NOW: Owner review
ACTION OWNER: ANDREW
BLOCKER: Detailed buyer requirements need confirmation. · Evidence confidence is not yet sufficient. · The participation route needs verification. · Permission for direct contact needs confirmation. · Procurement contact restrictions need checking. · The buyer contact needs verification. · The Pura proposition needs review. · The required response is not yet ready. · A previous contact or duplicate check needs review. · The current owner decision or buyer state prevents contact. · An approved sender must be verified. · Applicable participation requirements need checking. · The opportunity needs current source verification. · The opportunity is below the automatic-eligibility threshold. · A permitted direct contact route is not yet verified.
NEXT ACTION: Retain this record for reference; do not pursue it.
UNAPPROVED · LAPSED

WHAT THE BUYER SAYS THEY NEED

Langbaurgh Closed Landfill Site ('the site') is located on Langbaurgh Ridge, just north of Great Ayton,North Yorkshire. The site is a former Whinstone quarry, which was active from the early 1800s until 1964 and include surface and below ground workings. The site was used as a landfill between 1978 and 1991, infilling the excavation left by surface quarrying to a recorded depth of around 15m. Numerous shafts, adits and below ground voids are understood to underlie the site. The site boundaries are generally very steep, formed by the former quarry walls. One of the shafts near the western end of the site has previously collapsed and been remed…

KEY PUBLISHED FACTS

  • Published contact: Dale Casson
  • Contact email: dale.casson@northyorks.gov.uk

Published route is closed, inactive, withdrawn or already awarded.

WHY RADAR THINKS PURA MAY FIT

Physical works or professional services are required. References to systems, portals or audit trails do not establish a software opportunity. This is a Pura hypothesis; detailed scope, delivery capability and procurement constraints still need checking.

Confidence: MEDIUM — notice scope only

Known: the saved buyer requirement above.
Inferred: potential Pura capability match; not buyer-confirmed.

What still needs checking

  • Detailed workflows and acceptance criteria
  • Integration and security requirements
  • Direct contact permission and procurement constraints
  • Proof effort and bounded paid discovery acceptance

PROGRESS

  1. DISCOVERED
  2. VERIFIED
  3. OWNER REVIEW
  4. APPROVED
  5. RESEARCHING
  6. REQUIREMENT RECONSTRUCTED
  7. PROOF DECISION
  8. PROOF BUILDING
  9. PROOF QA
  10. PROOF READY
  11. CONTACT READY
  12. OWNER SEND GATE
  13. SENT
  14. WAITING FOR RESPONSE
  15. RESPONSE RECEIVED
  16. COMMERCIAL CONVERSATION
  17. WON / LOST

Current stage is highlighted. Other stages are possible steps, not a claim they have happened.

ACTIVITY

  1. — Radar last recorded source evidence.
  2. — Radar discovered the opportunity.

HUMAN CHECK

Official source available: YES
Radar fully expanded source: YES

Key facts verified: value, deadline, contact, route, stage — according to saved evidence; check current source.

Outstanding verification

  • Detailed workflows and acceptance criteria
  • Integration and security requirements
  • Direct contact permission and procurement constraints
  • Proof effort and bounded paid discovery acceptance

Last verification: 1 Nov 2026 · 11:01 GMT

OPEN OFFICIAL SOURCEContracts Finder ↗

WHY THIS SCORE?

ComponentEarned / maximum
Buyer need clarity0 / 20
Route & contactability0 / 15
Pura capability fit0 / 15
Time to value0 / 15
Proof speed0 / 10
Evidence confidence0 / 10
Urgency0 / 10
Commercial value0 / 5

WHAT WOULD INCREASE THE SCORE

Obtain stronger evidence for: Buyer need clarity, Route & contactability, Pura capability fit, Time to value, Proof speed, Evidence confidence, Urgency, Commercial value.

WHAT IS HOLDING IT BACK

Not ranked as current work: LAPSED. Historical evidence is retained; current source confirmation is required.

OPPORTUNITY STRENGTH

46 / 100

How commercially interesting the buyer requirement appears.

PURSUIT READINESS

20 / 100

How ready Pura is to act on it now.

Recorded diagnostic assessment; separate from the production opportunity score. Reassess when evidence changes.

CAN WE CONTACT THEM?

Contact mode: OWNER APPROVAL REQUIRED
Direct contact route: NOT YET VERIFIED
Auto-contact eligible: NO

Eligibility is an indicator only. It does not authorise sending.

Why not yet

TECHNICAL / AUDIT EVIDENCE
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    "unknowns_json": "[]",
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    "recurring_revenue_type": "UNKNOWN",
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    "confidence": "MEDIUM — notice scope only",
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    "facts_json": "{\"award_values\":[{\"amount\":659464,\"currency\":\"GBP\"}],\"buyer\":\"The North Yorkshire Council\",\"buyer_reference\":\"20261013143319-104117\",\"contact_email\":\"dale.casson@northyorks.gov.uk\",\"contact_name\":\"Dale Casson\",\"contact_restrictions\":[],\"contacts\":[{\"email\":\"dale.casson@northyorks.gov.uk\",\"name\":\"Dale Casson\",\"organisation\":\"The North Yorkshire Council\",\"telephone\":\"+44 1723383682\"}],\"contract_terms\":[{\"endDate\":\"2028-03-31T23:59:59+01:00\",\"startDate\":\"2026-11-01T00:00:00Z\"}],\"cpv\":[{\"description\":\"Engineering works and construction works\",\"id\":\"45220000\",\"scheme\":\"CPV\"}],\"currency\":\"GBP\",\"days_to_deadline\":-115,\"deadline\":\"2026-07-10T12:00:00+01:00\",\"deadline_conflict\":false,\"deadline_kind\":\"TENDER\",\"deadline_narrative\":\"\",\"deadline_structured\":\"2026-07-10T12:00:00+01:00\",\"deadline_time_unpublished\":false,\"demo_evidence\":[],\"direct_contact_evidence\":[],\"engagement_route\":\"\",\"estimated_value\":659464,\"expansion_scope\":\"Complete official OCDS release; linked restricted documents require separate verification.\",\"extensions\":[],\"fully_expanded\":true,\"geographic_scope\":[[{\"countryName\":\"United Kingdom\",\"region\":\"Yorkshire and the Humber\"}]],\"hidden_opportunity\":true,\"historical_engagement_evidence\":\"\",\"incumbent_evidence\":[],\"linked_documents\":[],\"lot_count\":0,\"lot_scope\":[],\"meeting_evidence\":[],\"notice_type\":\"AWARD\",\"procurement_method\":\"Restricted procedure\",\"procurement_status\":\"complete\",\"publication_date\":\"2026-10-13T14:33:24+01:00\",\"published_corrections\":[],\"published_notice_types\":[],\"published_requirement\":\"Langbaurgh Closed Landfill Site ('the site') is located on Langbaurgh Ridge, just north of Great Ayton,North Yorkshire.  The site is a former Whinstone quarry, which was active from the early 1800s until 1964 and include surface and below ground workings. The site was used as a landfill between 1978 and 1991, infilling the excavation left by surface quarrying to a recorded depth of around 15m. Numerous shafts, adits and below ground voids are understood to underlie the site. The site boundaries are generally very steep, formed by the former quarry walls.  One of the shafts near the western end of the site has previously collapsed and been remediated. However, further collapse of the shaft (and remediation) has occurred, forming a roughly circular surface depression above the shaft location. The depression is estimated (from remote surveying) to be 10-15m wide and approximately 6-8m deep. The scheme involves the remedial work for this collapsed mine shaft. The remedial solution adopted comprises the infilling of the existing depression with lightweight aggregates contained by a geotextile 'bag' and covering with a high-strength geogrid reinforced 'soft cap'. The design has been progressed and updated in consultation with various specialist geogrid and lightweight aggregate suppliers in an attempt to deliver a constructible solution.  The remedial design is focussed on providing 'betterment' to the site and does not provide a 'designed' solution; nor is the solution to be warranted by WSP or the Contractor against future failures / deviations / collapse.\",\"questionnaire_evidence\":[],\"reference\":\"9b01f904-0173-46ec-8f64-eb8874dd1be0-917607\",\"registration_evidence\":[],\"relevance_evidence\":{\"REMEDIAL_ENGINEERING\":[\"remedial work\"]},\"requirement_items\":\"\",\"selection_requirements\":[],\"sme_suitability\":[{\"sme\":false,\"vcse\":false}],\"submission_method\":\"UNKNOWN\",\"value_excluding_vat\":null,\"value_including_vat\":null,\"value_minimum\":null,\"value_scope\":\"TOTAL_NOTICE_NOT_PURA_ADDRESSABLE\",\"vat_basis\":\"VAT basis not explicit in release\"}",
    "inferences_json": "[{\"basis\":{\"REMEDIAL_ENGINEERING\":[\"remedial work\"]},\"type\":\"HIDDEN_ADDRESSABLE_ELEMENT\"}]",
    "unknowns_json": "[]",
    "recommended_action": "VERIFY AWARDED LOT / SUBCONTRACT TERMS",
    "route_to_market": "RESEARCH",
    "time_to_revenue": "UNKNOWN",
    "ranking_json": "{\"delivery_fit\":3,\"effort\":2,\"evidence_confidence\":2,\"probability\":1,\"relationship_leverage\":1,\"repeatability\":1,\"risk_adjusted\":5,\"time_to_revenue\":0,\"value\":0}",
    "status": "BACKGROUND",
    "feedback_state": "NONE",
    "related_signals_json": "[\"edc04ca0-7736-40c0-a207-9253673f2481\"]",
    "related_tenders_json": "[\"edc04ca0-7736-40c0-a207-9253673f2481\"]",
    "related_contracts_json": "[]",
    "provenance_json": "{\"derivation\":\"opportunity-evidence-v2\",\"parent_signal\":\"edc04ca0-7736-40c0-a207-9253673f2481\"}",
    "data_mode": "LIVE",
    "content_digest": "43897e8c443eab52795792252af42ca3ac179c4c5218eb4bd4d3e8973c795d64",
    "created_at": "2026-10-13T19:01:17+00:00",
    "updated_at": "2026-11-05T02:01:16+00:00",
    "opportunity_kind": "COMPANY_SPECIFIC",
    "addressability": "PARTIALLY_ADDRESSABLE",
    "total_value_truth": "KNOWN",
    "total_value_band": "HIGH",
    "total_value_min": 659464.0,
    "total_value_max": 659464.0,
    "total_value_currency": "GBP",
    "addressable_value_truth": "UNKNOWN",
    "addressable_value_band": "UNKNOWN",
    "addressable_value_min": null,
    "addressable_value_max": null,
    "addressable_value_currency": null,
    "evidence_identity_count": 3,
    "event_count": 3,
    "organisation_count": 1,
    "source_count": 2,
    "first_evidence_at": "2026-09-03T15:40:51+00:00",
    "last_evidence_at": "2026-10-13T13:33:24+00:00",
    "evidence_recency": "CURRENT",
    "contradictory_evidence_json": "[]",
    "promotion_evidence_json": "[\"partner plausibility UNPROVEN: explicit supplier willingness and subcontract route required\"]",
    "kill_evidence_json": "[\"source evidence withdrawn\",\"commercial fit contradicted\",\"route proven impossible\"]",
    "recurring_revenue_type": "UNKNOWN",
    "organisation": "The North Yorkshire Council",
    "FACT": {
      "published_requirement": "Langbaurgh Closed Landfill Site ('the site') is located on Langbaurgh Ridge, just north of Great Ayton,North Yorkshire.  The site is a former Whinstone quarry, which was active from the early 1800s until 1964 and include surface and below ground workings. The site was used as a landfill between 1978 and 1991, infilling the excavation left by surface quarrying to a recorded depth of around 15m. Numerous shafts, adits and below ground voids are understood to underlie the site. The site boundaries are generally very steep, formed by the former quarry walls.  One of the shafts near the western end of the site has previously collapsed and been remediated. However, further collapse of the shaft (and remediation) has occurred, forming a roughly circular surface depression above the shaft location. The depression is estimated (from remote surveying) to be 10-15m wide and approximately 6-8m deep. The scheme involves the remedial work for this collapsed mine shaft. The remedial solution adopted comprises the infilling of the existing depression with lightweight aggregates contained by a geotextile 'bag' and covering with a high-strength geogrid reinforced 'soft cap'. The design has been progressed and updated in consultation with various specialist geogrid and lightweight aggregate suppliers in an attempt to deliver a constructible solution.  The remedial design is focussed on providing 'betterment' to the site and does not provide a 'designed' solution; nor is the solution to be warranted by WSP or the Contractor against future failures / deviations / collapse.",
      "notice_title": "Remediation Works Langbaurgh Mineshaft",
      "requirement_items": "",
      "procurement_method": "Restricted procedure",
      "deadline": "2026-07-10T12:00:00+01:00",
      "publication_date": "2026-10-13T14:33:24+01:00",
      "notice_type": "AWARD",
      "source_url": "https://www.contractsfinder.service.gov.uk/Notice/9b01f904-0173-46ec-8f64-eb8874dd1be0"
    },
    "SUPPORTED_INFERENCE": {
      "Pura_match_hypothesis": "Physical works or professional services are required. References to systems, portals or audit trails do not establish a software opportunity."
    },
    "UNKNOWN": [
      "Detailed workflows and acceptance criteria",
      "Integration and security requirements",
      "Direct contact permission and procurement constraints",
      "Proof effort and bounded paid discovery acceptance"
    ],
    "reconstruction_state": "BOUNDED_NOTICE_REVIEW",
    "commercially_qualified_solution": false,
    "route_class": "NO_GO",
    "recommendation": "NO GO",
    "proof_opportunity": "UNKNOWN — reconstruct detailed buyer workflow before selecting a proof",
    "proof_effort": "UNKNOWN",
    "commercial_entry": "Proposed bounded discovery; scope and buyer acceptance UNKNOWN",
    "contactability": "Published procurement route only; direct buyer contact UNKNOWN",
    "category": "TENDER",
    "fit_review": {
      "factors": {
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        "evidence_confidence": 0.85,
        "urgency": 0,
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        "time_to_cash": 0,
        "proof_effort": 0
      },
      "classification": "PHYSICAL_SERVICE",
      "fit_reason": "Physical works or professional services are required. References to systems, portals or audit trails do not establish a software opportunity.",
      "diagnostic_scores": {
        "opportunity_strength": 46,
        "pursuit_readiness": 20
      },
      "strength_components": {
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        "commercial_value": 12,
        "timing": 0,
        "capability_relevance": 8,
        "evidence_confidence": 10
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      "readiness_components": {
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        "deadline_clarity": 10,
        "proof_readiness": 0,
        "proposition_readiness": 0,
        "procurement_restrictions": 0,
        "response_mechanism": 0
      }
    },
    "freshness": "LAPSED",
    "freshness_reason": "Published route is closed, inactive, withdrawn or already awarded.",
    "evidence_at": "2026-11-01T11:01:55+00:00",
    "contact_evidence": {
      "requirement_complete": false,
      "high_confidence": false
    },
    "verified_route": "UNKNOWN",
    "contact_model": {
      "AUTO_CONTACT_ELIGIBLE": false,
      "contact_mode": "OWNER APPROVAL REQUIRED",
      "threshold": 80,
      "gates": {
        "requirement_complete": false,
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        "buyer_route_verified": false,
        "direct_contact_permitted": false,
        "procurement_allows_contact": false,
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        "proposition_ready": false,
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        "no_duplicate_contact": false,
        "no_negative_state": false,
        "approved_sender_available": false,
        "jurisdiction_satisfied": false,
        "live": false,
        "score": false,
        "direct_route": false
      },
      "blockers": [
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        "buyer_route_verified",
        "direct_contact_permitted",
        "procurement_allows_contact",
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        "proposition_ready",
        "required_response_ready",
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        "no_negative_state",
        "approved_sender_available",
        "jurisdiction_satisfied",
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      "send_authorised": false
    },
    "owner_state": "UNAPPROVED",
    "decision_at": null,
    "decision_hash": "93d4c371d6890f0455472167bab6160ab8dc4f01e1b0be91f3a866645eccbc39",
    "score": 0,
    "score_factors": {
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      "evidence_confidence": 0.85,
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      "urgency": 0,
      "commercial_value": 0.4,
      "time_to_cash": 0,
      "proof_effort": 0
    },
    "quick_win": false,
    "evidence_digest": "93d4c371d6890f0455472167bab6160ab8dc4f01e1b0be91f3a866645eccbc39",
    "route": "https://www.contractsfinder.service.gov.uk/Notice/9b01f904-0173-46ec-8f64-eb8874dd1be0"
  },
  "source_urls_used": [
    {
      "url": "https://www.contractsfinder.service.gov.uk/Notice/9b01f904-0173-46ec-8f64-eb8874dd1be0",
      "name": "Contracts Finder",
      "reference": "9b01f904-0173-46ec-8f64-eb8874dd1be0-917607",
      "published": "2026-10-13T14:33:24+01:00",
      "checked": "2026-11-01T11:01:55+00:00",
      "unavailable": false
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  ],
  "lifecycle_audit": {
    "owner_actions": [],
    "owner_decision": null,
    "requirement_reconstructions": []
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}
RETAINED WORKSPACE / PREPARED PACKAGE
TENDER · BACKGROUND · PARTIALLY_ADDRESSABLE

The North Yorkshire Council

WHY THIS IS HERE

Award notice from The North Yorkshire Council. Relevance is supported by notice evidence.

Evidence strength, addressability and route are evaluated independently of relationship.

PURA FIT

[{"capability_id":"REMEDIAL_ENGINEERING","confidence":"MEDIUM","currently_sold":"YES","name":"Remedial engineering"}]
Total procurement value
KNOWN · HIGH · 659464.0 GBP
Pura-addressable value
UNKNOWN · UNKNOWN · None
Route
RESEARCH
Time to revenue
UNKNOWN
Independent evidence
3 identities · 2 sources
Recurring potential
UNKNOWN

UNCERTAINTY

[]

WHAT WOULD PROMOTE IT

["partner plausibility UNPROVEN: explicit supplier willingness and subcontract route required"]

WHAT WOULD KILL IT

["source evidence withdrawn","commercial fit contradicted","route proven impossible"]

EVIDENCE

[
  {
    "id": "edc04ca0-7736-40c0-a207-9253673f2481",
    "canonical_key": "contracts_finder_ocds:9b01f904-0173-46ec-8f64-eb8874dd1be0-917607",
    "engine": "TENDER",
    "organisation_id": "b46a3123-cb7c-41d1-8998-eae1934174f6",
    "signal_type": "AWARD",
    "title": "Remediation Works Langbaurgh Mineshaft",
    "summary": "Award notice from The North Yorkshire Council. Relevance is supported by notice evidence.",
    "observed_at": "2026-11-01T11:01:55+00:00",
    "event_at": "2026-10-13T14:33:24+01:00",
    "source_id": "contracts_finder_ocds",
    "source_reference": "9b01f904-0173-46ec-8f64-eb8874dd1be0-917607",
    "source_url": "https://www.contractsfinder.service.gov.uk/Notice/9b01f904-0173-46ec-8f64-eb8874dd1be0",
    "source_permission": "PERMITTED_WITH_CONDITIONS",
    "facts_json": "{\"award_values\":[{\"amount\":659464,\"currency\":\"GBP\"}],\"buyer\":\"The North Yorkshire Council\",\"buyer_reference\":\"20261013143319-104117\",\"contact_email\":\"dale.casson@northyorks.gov.uk\",\"contact_name\":\"Dale Casson\",\"contact_restrictions\":[],\"contacts\":[{\"email\":\"dale.casson@northyorks.gov.uk\",\"name\":\"Dale Casson\",\"organisation\":\"The North Yorkshire Council\",\"telephone\":\"+44 1723383682\"}],\"contract_terms\":[{\"endDate\":\"2028-03-31T23:59:59+01:00\",\"startDate\":\"2026-11-01T00:00:00Z\"}],\"cpv\":[{\"description\":\"Engineering works and construction works\",\"id\":\"45220000\",\"scheme\":\"CPV\"}],\"currency\":\"GBP\",\"days_to_deadline\":-115,\"deadline\":\"2026-07-10T12:00:00+01:00\",\"deadline_conflict\":false,\"deadline_kind\":\"TENDER\",\"deadline_narrative\":\"\",\"deadline_structured\":\"2026-07-10T12:00:00+01:00\",\"deadline_time_unpublished\":false,\"demo_evidence\":[],\"direct_contact_evidence\":[],\"engagement_route\":\"\",\"estimated_value\":659464,\"expansion_scope\":\"Complete official OCDS release; linked restricted documents require separate verification.\",\"extensions\":[],\"fully_expanded\":true,\"geographic_scope\":[[{\"countryName\":\"United Kingdom\",\"region\":\"Yorkshire and the Humber\"}]],\"hidden_opportunity\":true,\"historical_engagement_evidence\":\"\",\"incumbent_evidence\":[],\"linked_documents\":[],\"lot_count\":0,\"lot_scope\":[],\"meeting_evidence\":[],\"notice_type\":\"AWARD\",\"procurement_method\":\"Restricted procedure\",\"procurement_status\":\"complete\",\"publication_date\":\"2026-10-13T14:33:24+01:00\",\"published_corrections\":[],\"published_notice_types\":[],\"published_requirement\":\"Langbaurgh Closed Landfill Site ('the site') is located on Langbaurgh Ridge, just north of Great Ayton,North Yorkshire.  The site is a former Whinstone quarry, which was active from the early 1800s until 1964 and include surface and below ground workings. The site was used as a landfill between 1978 and 1991, infilling the excavation left by surface quarrying to a recorded depth of around 15m. Numerous shafts, adits and below ground voids are understood to underlie the site. The site boundaries are generally very steep, formed by the former quarry walls.  One of the shafts near the western end of the site has previously collapsed and been remediated. However, further collapse of the shaft (and remediation) has occurred, forming a roughly circular surface depression above the shaft location. The depression is estimated (from remote surveying) to be 10-15m wide and approximately 6-8m deep. The scheme involves the remedial work for this collapsed mine shaft. The remedial solution adopted comprises the infilling of the existing depression with lightweight aggregates contained by a geotextile 'bag' and covering with a high-strength geogrid reinforced 'soft cap'. The design has been progressed and updated in consultation with various specialist geogrid and lightweight aggregate suppliers in an attempt to deliver a constructible solution.  The remedial design is focussed on providing 'betterment' to the site and does not provide a 'designed' solution; nor is the solution to be warranted by WSP or the Contractor against future failures / deviations / collapse.\",\"questionnaire_evidence\":[],\"reference\":\"9b01f904-0173-46ec-8f64-eb8874dd1be0-917607\",\"registration_evidence\":[],\"relevance_evidence\":{\"REMEDIAL_ENGINEERING\":[\"remedial work\"]},\"requirement_items\":\"\",\"selection_requirements\":[],\"sme_suitability\":[{\"sme\":false,\"vcse\":false}],\"submission_method\":\"UNKNOWN\",\"value_excluding_vat\":null,\"value_including_vat\":null,\"value_minimum\":null,\"value_scope\":\"TOTAL_NOTICE_NOT_PURA_ADDRESSABLE\",\"vat_basis\":\"VAT basis not explicit in release\"}",
    "inferences_json": "[{\"basis\":{\"REMEDIAL_ENGINEERING\":[\"remedial work\"]},\"type\":\"HIDDEN_ADDRESSABLE_ELEMENT\"}]",
    "unknowns_json": "[]",
    "confidence": "MEDIUM",
    "relevant_services_json": "[{\"confidence\":\"MEDIUM\",\"rationale\":\"remedial work\",\"service\":\"REMEDIAL_ENGINEERING\"}]",
    "value_truth": "KNOWN",
    "value_band": "HIGH",
    "value_min": 659464.0,
    "value_max": 659464.0,
    "value_currency": "GBP",
    "urgency": "BACKGROUND",
    "priority": "WATCH",
    "recommended_action": "TRACK UNTIL TENDER",
    "status": "OPEN",
    "notification_state": "NOT_ELIGIBLE",
    "feedback_state": "NONE",
    "provenance_json": "{\"licence\":\"http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/\",\"ocid\":\"ocds-b5fd17-78f86254-33bd-4ab8-89bf-fbb5bb056e8d\",\"release_id\":\"9b01f904-0173-46ec-8f64-eb8874dd1be0-917607\"}",
    "data_mode": "LIVE",
    "content_digest": "81da9892ce8205e50a55e669d76f2c47953dd0491181e987a3a582cfe756a1ea",
    "created_at": "2026-10-13T19:01:16+00:00",
    "updated_at": "2026-11-01T11:01:55+00:00"
  }
]

CLASSIFICATION HISTORY

[
  {
    "event_type": "DISCOVERED",
    "previous_status": null,
    "new_status": "BACKGROUND",
    "occurred_at": "2026-10-13T19:01:17+00:00",
    "reason_json": "{\"kill\":[\"source evidence withdrawn\",\"commercial fit contradicted\",\"route proven impossible\"],\"promotion\":[\"partner plausibility UNPROVEN: explicit supplier willingness and subcontract route required\"]}"
  }
]