# NTSB Safety Recommendation P-76-093

**Citation:** P-76-093  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective:** 1977-01-31  
**Published:** 1977-01-31

REQUIRE, AS A PREREQUISITE OF A CONTRACT AWARD, THAT THE CONTRACTOR BE IN CONTACT WITH THE "ONE-CALL" NOTIFICATION SYSTEM OR THE INDIVIDUAL FACILITIES OPERATORS TO DETERMINE THE PRECISE DEPTH AND LOCATION OF ANY UNDERGROUND FACILITIES BEFORE BEGINNING THE PROJECT.

## Document text

NTSB safety recommendation P-76-093.

REQUIRE, AS A PREREQUISITE OF A CONTRACT AWARD, THAT THE CONTRACTOR BE IN CONTACT WITH THE "ONE-CALL" NOTIFICATION SYSTEM OR THE INDIVIDUAL FACILITIES OPERATORS TO DETERMINE THE PRECISE DEPTH AND LOCATION OF ANY UNDERGROUND FACILITIES BEFORE BEGINNING THE PROJECT.

Priority: CLASS II

Overall Status: Closed - Acceptable Action

Issued Date: 1977-01-31

Adopted Date: 1976-12-09

Overall Date Closed: 1987-05-14

Synopsis: ON JUNE 16, 1976, A PIECE OF CONSTRUCTION EQUIPMENT EXCAVATING FOR A STREET WIDENING PROJECT ON VENICE BOULEVARD IN LOS ANGELES, CALIFORNIA STRUCK AND PUNCTURED AN 8-INCH PETROLEUM PRODUCTS PIPELINE OWNED BY THE STANDARD OIL COMPANY OF CALIFORNIA. THE ESCAPING GASOLINE SPRAYED ON NEARBY BUILDINGS AND IGNITED. 9 PERSONS WERE KILLED, 14 PERSONS WERE INJURED, 7 BUILDINGS WERE DESTROYED, OTHER BUILDINGS WERE DAMAGED BY FIRE AND HEAT, AND 15 VEHICLES WERE DESTROYED.

Ntsbnumber: DCA76MP021

Report Number: PAR-76-08

Addressee Name: State of California, Department of Transportation

Addressee Status: Closed - Acceptable Action

Addressee Date Closed: 1987-05-14

Addressee Acronym: Caltrans

Addressee Organization Type: S-State Government

Communication Date: 1987-02-26

Communication Type: Official Correspondence

Communication Contents: THIS IS ACTUALLY A FOLLOWUP LETTER DATED 2/26/87. THE FOLLOWING IS A HISTORY OF PREVIOUS CORRESPONDENCE: NTSB'S LETTER OF 8/29/78, INQUIRING AS TO WHY CALTRANS HAS DECIDED NOT TO JOIN THE UNDERGROUND SERVICE ALERT ("ONE-CALL") SYSTEM IN NORTHERN CALIFORNIA, ATTACHED. CALTRAN'S RESPONSE OF 9/13/78, REGARDING "ONE-CALL" SYSTEM. UNDERGROUND SERVICE ALERT'S 9/29/78, LETTER REGARDING CALTRANS DECISION NOT TO JOIN THE ONE-CALL SYSTEM AND RELATED CORRESPONDENCE.

Addressee Acronym: Caltrans

Addressee Organization Type: S-State Government

Communication Date: 1987-04-02

Communication Type: Official Correspondence

Addressee Acronym: Caltrans

Addressee Organization Type: S-State Government

Communication Date: 1987-02-26

Communication Type: Official Correspondence

Addressee Acronym: Caltrans

Addressee Organization Type: S-State Government

Communication Date: 1987-05-14

Communication Type: Official Correspondence

## Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-76-093>
- Source ID: `ntsb-pipeline`
- SHA-256: `684eee13b42dc68819b935af67f86b76f38ed45601b666122faab6579ed33d69`
- Retrieved: 2026-08-20T04:57:24.741Z
- Exported: 2026-08-23T10:23:10.380Z
- Document slug: `ntsb-recommendation-p-76-093`

### Source metadata

```json
{
  "recordKind": "ntsb_safety_recommendation",
  "safetyRecommendationNumber": "P-76-093",
  "recommendationMode": "Pipeline",
  "topicMode": "Pipeline",
  "ntsbNumber": "DCA76MP021",
  "priority": "CLASS II",
  "overallStatus": "Closed - Acceptable Action",
  "overallStatusAcronym": "CAA",
  "overallDateClosed": "1987-05-14",
  "lastModifiedDate": "2016-11-15",
  "reportNumber": "PAR-76-08",
  "reportUrl": "https://www.ntsb.gov/investigations/Pages/DCA76MP021.aspx",
  "transmittalLetterUrl": "http://www.ntsb.gov/safety/safety-recs/recletters/P76_91_93.pdf",
  "addressees": [
    {
      "addresseeName": "State of California, Department of Transportation",
      "addresseeStatusAcronym": "CAA",
      "addresseeStatus": "Closed - Acceptable Action",
      "addresseeDateClosed": "1987-05-14",
      "addresseeDetails": [
        {
          "addresseeAcronym": "Caltrans",
          "addresseeOrganizationType": "S-State Government",
          "isFromNtsb": false,
          "communicationDate": "1987-02-26",
          "communicationType": "Official Correspondence",
          "communicationContents": "THIS IS ACTUALLY A FOLLOWUP LETTER DATED 2/26/87.  THE FOLLOWING IS A HISTORY OF PREVIOUS CORRESPONDENCE:  NTSB'S LETTER OF 8/29/78, INQUIRING AS TO WHY CALTRANS HAS DECIDED NOT TO JOIN THE UNDERGROUND SERVICE ALERT (\"ONE-CALL\") SYSTEM IN NORTHERN CALIFORNIA, ATTACHED.  CALTRAN'S RESPONSE OF 9/13/78, REGARDING \"ONE-CALL\" SYSTEM.  UNDERGROUND SERVICE ALERT'S 9/29/78, LETTER REGARDING CALTRANS DECISION NOT TO JOIN THE ONE-CALL SYSTEM AND RELATED CORRESPONDENCE."
        },
        {
          "addresseeAcronym": "Caltrans",
          "addresseeOrganizationType": "S-State Government",
          "isFromNtsb": false,
          "communicationDate": "1987-04-02",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        },
        {
          "addresseeAcronym": "Caltrans",
          "addresseeOrganizationType": "S-State Government",
          "isFromNtsb": true,
          "communicationDate": "1987-02-26",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        },
        {
          "addresseeAcronym": "Caltrans",
          "addresseeOrganizationType": "S-State Government",
          "isFromNtsb": true,
          "communicationDate": "1987-05-14",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        }
      ]
    }
  ],
  "jurisdiction": "US"
}
```