# Reportable Incident Testing

**Citation:** COMAR 20.57.02.04  
**Type / status:** regulation / current  
**Agency:** Maryland Public Service Commission  
**Effective:** Not stated  
**Published:** Not stated

Maryland pipeline-safety provision COMAR 20.57.02.04, Reportable Incident Testing.

## Document text

A. Testing.

(1) After a reportable incident, a gas company or gas master meter operator shall conduct the following minimum tests:

(a) The perimeter of the area involved in the incident shall be leak surveyed using a subsurface gas detection survey as prescribed in the GPTC Guide For Gas Transmission and Distribution Piping Systems 1990-91, Volume One, Guide Material Appendix G-11 or G-11A, which is incorporated by reference in COMAR 20.55.02.02; and

(b) All piping directly associated with the incident, or which may have contributed to the incident, shall be pressure tested, unless evidence clearly indicates the cause and origin of the incident.

(2) A gas regulator or meter serving a structure involved in the incident shall be properly tagged and stored in a secured area for testing at the earliest practical time.

(3) When appropriate, a sample of the failed facility or equipment shall be selected for laboratory examination.

B. Results Reported.

(1) A gas company or gas master meter operator shall report the results of any test under §A of this regulation to the Division within 10 days of the completion of the test.

(2) Test results under §A(1) of this regulation shall include at a minimum the:

(a) Time and date of the test;

(b) Specific location of the pipeline or pipeline section tested, including a suitable map of the route of the pipeline;

(c) Results; and

(d) Name of the person responsible for testing.

## Provenance

- Official: Yes
- Source: <https://regs.maryland.gov/us/md/exec/comar/20.57.02.04>
- Source ID: `maryland-comar`
- SHA-256: `f4de7449a7497e5b8a476e40361db4abc786ab0938913e13165e47bdbe01f2a5`
- Retrieved: 2026-08-20T08:47:37.108Z
- Exported: 2026-08-23T19:03:37.786Z
- Document slug: `md-comar-20-57-02-04`

### Source metadata

```json
{
  "jurisdiction": "US-MD",
  "commodity": [
    "gas",
    "pipeline-enforcement"
  ],
  "legalScope": "Bounded Maryland PSC pipeline-safety rules in COMAR 20.55-20.57.",
  "applicabilityCaveat": "Maryland PSC enforcement under PHMSA certification is limited to intrastate gas and hazardous-liquid pipeline operators and applicable LPG systems. PHMSA retains inspection and enforcement responsibility for interstate gas and hazardous-liquid pipelines. Coverage also depends on operator class, gas-company or master-meter status, facility and commodity definitions, exemptions, waivers, and federal preemption.",
  "incorporationCaveat": "Maryland provisions use both fixed editions of private or federal guidance and prospective phrases such as 'as amended' for federal statutes and 49 CFR. This connector preserves the consolidated Maryland text retrieved on the stated date but does not infer that every later federal amendment is incorporated for every legal purpose. Verify the controlling Maryland incorporation rule, federal edition, and event date.",
  "publicationCaveat": "The Library of Maryland Regulations is the official consolidated access system, but the Maryland Register and filed rulemaking record control adoption history. Administrative-history notes are evidence aids, not substitutes for the promulgation record. The PSC program description is dated September 2011 and is used only to corroborate program scope, not current rule text.",
  "rightsCaveat": "Official Maryland and federal legal-source captures are preserved with attribution and hashes. State presentation, seals, site software, and incorporated private standards may carry separate rights; incorporated standards are referenced but not reproduced by this connector.",
  "references": [
    {
      "citation": "COMAR 20.55.02.02",
      "referenceType": "state-administrative-rule",
      "url": "https://regs.maryland.gov/us/md/exec/comar/20.55.02.02"
    }
  ],
  "region": "MD"
}
```