Indicator C5 — Pattern Consistent with Contract Splitting

AI-verified / Na-verify ng AI Data as of October 21, 2026

Pattern Consistent with Contract Splitting

Multiple similar contracts to the same contractor/DEO just under a threshold in a short window.

This is a statistical anomaly or indicator worth examining — not proof of wrongdoing, fraud, or corruption against any person.

Indicator: 9 contracts awarded to TOPNOTCH CATALYST BUILDERS INC by the same office started within 49 days, each between ₱42.5M and ₱50M (just under the ₱50M threshold), with 3 in the same municipality. It is common for flood control projects to be distributed across multiple sites within a district in a single funding cycle.

Public record entityConstruction of Flood Control Structure along Barangay Panducot, Calumpit, Bulacan

LocationCALUMPIT (BULACAN), BULACAN, Region IIIContract 23CC0002

Amount₱48,999,996.14 sumbong source

Only contractors and government agencies named in public procurement records are shown. Private individuals are not named.

Satellite before / after

Esri Wayback · ~0.5 mLocation approximate

Before capture: 2022-05-12 · Maxar

After capture: 2025-02-03 · Vantor

Satellite comparison for public reference — not proof of completion or non-completion.

Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.

Imagery © Esri, Maxar, Earthstar Geographics, and the GIS User Community

Caveats & resolution

Esri World Imagery Wayback (~0.5–1 m); dates are archive release dates, not capture timestamps.
Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.
DPWH coordinates can be approximate; marker shows the imagery center (may be snapped to riverbank/coast).

Disclaimer

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How this was checked

publish · confidence 0.98

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

This is a textbook C5 case: 9 contracts, all just under the ₱50M threshold, awarded to the same contractor by the same DEO within 49 days, with 3 in the same municipality. The titles clearly refer to different sites (different barangays, rivers, or sections), which is expected for C5. The code already confirmed the cluster math and thresholds. There is no evidence of a data artifact or false positive.

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Project completion

Schedule fields from DPWH transparency portal records and the Sumbong sa Pangulo flood-control list — not inferred beyond those columns.

Reported complete (DPWH): 1Ongoing: 0Delayed: 0Status unknown: 0

Project	Prog.	Target end	Actual end	Days late	Status
Construction of Flood Control Structure along Barangay Panducot, Calumpit, Bulacan23CC0002Flood control	100%	October 3, 2023	May 4, 2023	No target date from DPWH, so lateness cannot be computed	completedsumbong source

Start: February 6, 2023 · Source fetched October 21, 2026

Rule Definition

≥3 contracts within 120 days, each 85–100% of ₱50M threshold, similar titles.

Triggering Data & citations

Cluster of contracts just under procurement threshold in one municipality

{
  "deo": "Bulacan 1st District Engineering Office",
  "contractId": "23CC0002",
  "contractor": "TOPNOTCH CATALYST BUILDERS INC",
  "windowDays": 120,
  "clusterSize": 9,
  "thresholdPhp": 50000000,
  "contractCostPhp": 48999996.14,
  "maxInOneMunicipality": 3
}

Source documents

sumbong — https://raw.githubusercontent.com/rukku/sumbongsapangulo.ph-datasets/main/flood_control_projects.geojsonFetched October 21, 2026

Satellite before / after

Project completion

Rule Definition

Triggering Data & citations

Where this project sits