[Research](/research) / InternalHazardousMaterialsUndergroundPulse

# Internal Open Data Hazardous Materials Underground Storage Tanks Commercial Feed: 2026 statistics from 1,027 public records

**The most common filing category is Permitting & Work Filings: 1,020 of 1,027 records (99.3%) (as of 2026-11-03; source: Internal Open Data Open Data (internal-sandiegocounty.data.socrata.com, dataset 72e9-euy8)).**

Data as of 2026-11-03 · Compiled by Zalwin from Internal Open Data Open Data (internal-sandiegocounty.data.socrata.com, dataset 72e9-euy8) Copy citation

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## Key findings

- Zalwin's InternalHazardousMaterialsUndergroundPulse dataset holds 1,027 InternalHazardousMaterialsUndergroundPulse records dated 2012-01-17 to 2025-11-15 (as of 2026-11-03; source: Internal Open Data Open Data (internal-sandiegocounty.data.socrata.com, dataset 72e9-euy8)). [#](#finding-1)
- The most common filing category is Permitting & Work Filings: 1,020 of 1,027 records (99.3%) (as of 2026-11-03; source: Internal Open Data Open Data (internal-sandiegocounty.data.socrata.com, dataset 72e9-euy8)). [#](#finding-2)

## InternalHazardousMaterialsUndergroundPulse records by filing category

| Group | Records | Share |
|---|---|---|
| Permitting & Work Filings | 1,020 | 99.3% |
| General Commercial Filings | 6 | 0.6% |
| Inspections & Field Reviews | 1 | 0.1% |

## Methodology and data provenance

- Sample: 1,027 public records dated 2012-01-17 to 2025-11-15; illustrative samples excluded.

- Source: Internal Open Data Open Data (internal-sandiegocounty.data.socrata.com, dataset 72e9-euy8). Refreshed automatically about every 24 hours; figures above are as of 2026-11-03.

- Shares are of all records in the dataset; totals and medians use only records with a stated reported value.

- Organization-level data only. Informational; verify individual records at the official source.

### Cite this study

Zalwin Research, "InternalHazardousMaterialsUndergroundPulse statistics" (data as of 2026-11-03), https://zalwin.com/research/internalhazardousmaterialsundpulse

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