Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2023-11-10 — CA
Operator
Southern California Gas Co
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$15,000
Incident datetime
2023-11-10 00:00 UTC
Report number
Location
CA, LOS ANGELES
Narrative
On 10-13-2023, a third-party contractor damaged an 8-inch steel gas main at 4200 valley blvd, walnut, ca while grading. Socalgas crew responded and controlled the release of gas. There were no injuries or further damage resulting from this incident. Investigation of the incident showed there was a valid USA ticket. However, the contractor's excavation practices were inadequate as it failed to pot-hole the 8-inch main. This incident was reported to DOT and cpuc due to gas release exceeding 3,000,000 cubic feet. Note: on 11-16-2023 a change was made to part a 4 to reflect the request from PHMSA to change the time from time incident became reportable to the time the company was notified. Per PHMSA note "earliest time would be the time the 3rd party noticed the leak. A4 is not to be confused with the time of confirmed discovery."
Detailed record list
Report Received Date
2023-11-10 00:00:00
Iyear
2023.0
Report Number
20230066.0
Supplemental Number
38816.0
Report Type
Supplemental Final
Operator Id
18484
Name
Southern California Gas Co
Operator Street Address
555 West Fifth Street
Operator City Name
Los Angeles
Operator State Abbreviation
CA
Operator Postal Code
90013.0
Time Zone
Pacific
Daylight Savings Ind
Yes
Location Street Address
4200 Valley Blvd
Location City Name
Walnut
Location County Name
Los Angeles
Location State Abbreviation
CA
Location Postal Code
91789.0
Location Latitude
34.035
Location Longitude
-117.825
Flow Cont Main Valve Ind
Yes
Flow Cont Meter Reg Ind
Yes
Nrc Rpt Num
1381706.0
Commodity Released Type
Natural Gas
Unintentional Release
3664.0
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Num Pub Evacuated
0.0
Communication State Fed Ind
No
Federal
No
Location Type
Private Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
15.0
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1959.0
Pipe Diameter
8.0
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Longitudinal Erw - Unknown Frequency
Wt Steel
0.322
Release Type
Other
Release Type Details
Third Party Dig In Damage
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
15000.0
Est Cost Emergency
20000.0
Est Cost Other
0.0
Gas Cost In Mcf
6.0
Est Cost Unintentional Release
21984.0
Est Cost Intentional Release
0.0
Prpty
56984.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Num Persons Hosp Not Ovnght
0.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
0.0
Num Business Building Affctd
0.0
Accident Psig
47.0
Normal Psig
47.0
Mop Psig
52.0
Mop Cfr Section
192.621 M
Maop Established Date
2013-01-07 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
None
Gas Odorized Lvl Not Msrd Ind
Yes
Scada In Place Ind
No
Accident Identifier
Notification From Third Party That Caused The Incident
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
Yes
One Call System Ind
Yes
State Law Exempt Ind
No
Notify Cga Dirt
No
Private Row Ind
Yes
Private Subtype
Private Business
Excavator Type
Contractor
Excavator Equipment
Grader/scraper
Work Performed
Grading
One Call Notified Ind
Yes
Locator Type
Facility Owner
Visible Marks
Yes
Service Interruption
No
Root Cause Category
Excavation Issue
Root Cause Type
Improper Excavation Practice Not Listed Above
Excvtn Dmg Third Party Ind
Yes
Preparer Name
J**** C********
Preparer Title
Pipeline Safety And Compliance Advisor
Preparer Email
J**********@s*******.com
Preparer Telephone
310-970-4854
Preparer Fax
909-335-7895
Local Contact Name
J**** C********
Local Contact Email
J**********@s*******.com
Local Contact Telephone
310-970-4854
Authorizer Name
J**** C********
Authorizer Title
Pipeline Safety And Compliance Advisor
Authorizer Telephone
310-970-4854
Authorizer Email
J**********@s*******.com
Narrative
On 10-13-2023, a third-party contractor damaged an 8-inch steel gas main at 4200 valley blvd, walnut, ca while grading. Socalgas crew responded and controlled the release of gas. There were no injuries or further damage resulting from this incident. Investigation of the incident showed there was a valid USA ticket. However, the contractor's excavation practices were inadequate as it failed to pot-hole the 8-inch main. This incident was reported to DOT and cpuc due to gas release exceeding 3,000,000 cubic feet. Note: on 11-16-2023 a change was made to part a 4 to reflect the request from PHMSA to change the time from time incident became reportable to the time the company was notified. Per PHMSA note "earliest time would be the time the 3rd party noticed the leak. A4 is not to be confused with the time of confirmed discovery."
| Report Received Date | 2023-11-10 00:00:00 |
|---|---|
| Iyear | 2023.0 |
| Report Number | 20230066.0 |
| Supplemental Number | 38816.0 |
| Report Type | Supplemental Final |
| Operator Id | 18484 PHMSA Enforcement |
| Name | Southern California Gas Co |
| Operator Street Address | 555 West Fifth Street |
| Operator City Name | Los Angeles |
| Operator State Abbreviation | CA |
| Operator Postal Code | 90013.0 |
| Time Zone | Pacific |
| Daylight Savings Ind | Yes |
| Location Street Address | 4200 Valley Blvd |
| Location City Name | Walnut |
| Location County Name | Los Angeles |
| Location State Abbreviation | CA |
| Location Postal Code | 91789.0 |
| Location Latitude | 34.035 Google Maps OpenStreetMap |
| Location Longitude | -117.825 Google Maps OpenStreetMap |
| Flow Cont Main Valve Ind | Yes |
| Flow Cont Meter Reg Ind | Yes |
| Nrc Rpt Num | 1381706.0 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 3664.0 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Num Pub Evacuated | 0.0 |
| Communication State Fed Ind | No |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 15.0 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1959.0 |
| Pipe Diameter | 8.0 |
| Pipe Specification | Api 5l |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Longitudinal Erw - Unknown Frequency |
| Wt Steel | 0.322 |
| Release Type | Other |
| Release Type Details | Third Party Dig In Damage |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 15000.0 |
| Est Cost Emergency | 20000.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 6.0 |
| Est Cost Unintentional Release | 21984.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 56984.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Num Persons Hosp Not Ovnght | 0.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 0.0 |
| Num Business Building Affctd | 0.0 |
| Accident Psig | 47.0 |
| Normal Psig | 47.0 |
| Mop Psig | 52.0 |
| Mop Cfr Section | 192.621 M View CFR 49 §192 |
| Maop Established Date | 2013-01-07 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | None |
| Gas Odorized Lvl Not Msrd Ind | Yes |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Third Party That Caused The Incident |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| State Law Exempt Ind | No |
| Notify Cga Dirt | No |
| Private Row Ind | Yes |
| Private Subtype | Private Business |
| Excavator Type | Contractor |
| Excavator Equipment | Grader/scraper |
| Work Performed | Grading |
| One Call Notified Ind | Yes |
| Locator Type | Facility Owner |
| Visible Marks | Yes |
| Service Interruption | No |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Improper Excavation Practice Not Listed Above |
| Excvtn Dmg Third Party Ind | Yes |
| Preparer Name | J**** C******** |
| Preparer Title | Pipeline Safety And Compliance Advisor |
| Preparer Email | J**********@s*******.com |
| Preparer Telephone | 310-970-4854 |
| Preparer Fax | 909-335-7895 |
| Local Contact Name | J**** C******** |
| Local Contact Email | J**********@s*******.com |
| Local Contact Telephone | 310-970-4854 |
| Authorizer Name | J**** C******** |
| Authorizer Title | Pipeline Safety And Compliance Advisor |
| Authorizer Telephone | 310-970-4854 |
| Authorizer Email | J**********@s*******.com |
| Narrative | On 10-13-2023, a third-party contractor damaged an 8-inch steel gas main at 4200 valley blvd, walnut, ca while grading. Socalgas crew responded and controlled the release of gas. There were no injuries or further damage resulting from this incident. Investigation of the incident showed there was a valid USA ticket. However, the contractor's excavation practices were inadequate as it failed to pot-hole the 8-inch main. This incident was reported to DOT and cpuc due to gas release exceeding 3,000,000 cubic feet. Note: on 11-16-2023 a change was made to part a 4 to reflect the request from PHMSA to change the time from time incident became reportable to the time the company was notified. Per PHMSA note "earliest time would be the time the 3rd party noticed the leak. A4 is not to be confused with the time of confirmed discovery." |
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