Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-07-25 — OH
Operator
Marathon Pipe Line Llc
Cause
Other Accident Cause
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$100,000
Incident datetime
2025-07-25 00:00 UTC
Report number
Location
OH
Narrative
On thursday june 26th, 2025, an operations technician working onsite noticed crude oil leaking from the excavation area associated with the recent hg1 valve replacement. At approximately the same time, the control room was investigating a cpm warning alarm. The operations technician immediately contacted the operations center to initiate a shutdown of the 40" capline crude line and notified supervision. It was discovered that the drain plug in the recently replaced valve had dislodged, resulting in the release. The following wildlife was impacted by the release: one alligator, one bird, one fish, one annelid, and three turtles. An investigation is ongoing and supplemental will be filed upon completion.
Detailed record list
Report Received Date
2025-07-25 00:00:00
Iyear
2025
Report Number
20250177
Supplemental Number
41179
Report Type
Original
Operator Id
32147
Name
Marathon Pipe Line Llc
Operator Street Address
539 South Main Street
Operator City Name
Findlay
Operator State Abbreviation
OH
Operator Postal Code
45840
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
30.011526
Location Longitude
-90.85913
Commodity Released Type
Crude Oil
Unintentional Release Bbls
1400
Recovered Bbls
1320
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Ground Patrol By Operator Or Its Contractor
Operator Type
Operator Employee
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
No
Nrc Rpt Num
1435177
Additional Nrc Report Numbers
1435376
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
Yes
Osro Arrived On Site Dt
6/26/2025 7:00
Num Pub Evacuated
0
Pipe Fac Name
Capline 40" Crude
Segment Name
St. James Capline Station
Onshore State Abbreviation
La
Onshore Postal Code
70086
Onshore City Name
Not Within A Municipality
Onshore County Name
St. James
Designated Location
Survey Station No.
Designated Name
St. James
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Valve
Valve Type
Mainline
Valve Mainline Type
Gate
Valve Manufacturer
M&j.� Made Ready By Lss (Louisiana Safety Systems).
Installation Year
2025
Manufactured Year
2008
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
Drain Plug Dislodged
Wildlife Impact Ind
Yes
Fish Aquatic Impact Ind
Yes
Birds Impact Ind
Yes
Terrestrial Impact Ind
Yes
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
5200
Est Cost Prop Damage
100000
Est Cost Emergency
999000
Est Cost Environmental
0
Est Cost Other
0
Prpty
1104200
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
75
Mop Psig
740
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2025-06-24 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
No
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
Yes
Cpm Conf Ind
No
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest Schedule Ind
Yes
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Accident Cause
Cause Details
Unknown
Other Type
Unknown
Unknown Subtype
Still Under Investigation, Cause Of Accident To Be Determined* (*supplemental Report Required)
Preparer Name
Z*** C*********
Preparer Title
Compliance Specialist
Preparer Email
Z***********@m****************.com
Preparer Telephone
4196726607
Prepared Date
2025-07-25 00:00:00
Authorizer Name
M****** G***
Authorizer Telephone
4194214505
Authorizer Title
Ess And Compliance Director
Authorizer Email
M*****@m****************.com
Narrative
On thursday june 26th, 2025, an operations technician working onsite noticed crude oil leaking from the excavation area associated with the recent hg1 valve replacement. At approximately the same time, the control room was investigating a cpm warning alarm. The operations technician immediately contacted the operations center to initiate a shutdown of the 40" capline crude line and notified supervision. It was discovered that the drain plug in the recently replaced valve had dislodged, resulting in the release. The following wildlife was impacted by the release: one alligator, one bird, one fish, one annelid, and three turtles. An investigation is ongoing and supplemental will be filed upon completion.
| Report Received Date | 2025-07-25 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250177 |
| Supplemental Number | 41179 |
| Report Type | Original |
| Operator Id | 32147 PHMSA Enforcement |
| Name | Marathon Pipe Line Llc |
| Operator Street Address | 539 South Main Street |
| Operator City Name | Findlay |
| Operator State Abbreviation | OH |
| Operator Postal Code | 45840 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 30.011526 Google Maps OpenStreetMap |
| Location Longitude | -90.85913 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 1400 |
| Recovered Bbls | 1320 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Ground Patrol By Operator Or Its Contractor |
| Operator Type | Operator Employee |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | No |
| Nrc Rpt Num | 1435177 NRC Report How to search |
| Additional Nrc Report Numbers | 1435376 |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | Yes |
| Osro Arrived On Site Dt | 6/26/2025 7:00 |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Capline 40" Crude |
| Segment Name | St. James Capline Station |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 70086 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | St. James |
| Designated Location | Survey Station No. |
| Designated Name | St. James |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Valve |
| Valve Type | Mainline |
| Valve Mainline Type | Gate |
| Valve Manufacturer | M&j.� Made Ready By Lss (Louisiana Safety Systems). |
| Installation Year | 2025 |
| Manufactured Year | 2008 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Drain Plug Dislodged |
| Wildlife Impact Ind | Yes |
| Fish Aquatic Impact Ind | Yes |
| Birds Impact Ind | Yes |
| Terrestrial Impact Ind | Yes |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 5200 |
| Est Cost Prop Damage | 100000 |
| Est Cost Emergency | 999000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1104200 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 75 |
| Mop Psig | 740 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2025-06-24 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | No |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | Yes |
| Cpm Conf Ind | No |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest Schedule Ind | Yes |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Other Accident Cause |
| Cause Details | Unknown |
| Other Type | Unknown |
| Unknown Subtype | Still Under Investigation, Cause Of Accident To Be Determined* (*supplemental Report Required) |
| Preparer Name | Z*** C********* |
| Preparer Title | Compliance Specialist |
| Preparer Email | Z***********@m****************.com |
| Preparer Telephone | 4196726607 |
| Prepared Date | 2025-07-25 00:00:00 |
| Authorizer Name | M****** G*** |
| Authorizer Telephone | 4194214505 |
| Authorizer Title | Ess And Compliance Director |
| Authorizer Email | M*****@m****************.com |
| Narrative | On thursday june 26th, 2025, an operations technician working onsite noticed crude oil leaking from the excavation area associated with the recent hg1 valve replacement. At approximately the same time, the control room was investigating a cpm warning alarm. The operations technician immediately contacted the operations center to initiate a shutdown of the 40" capline crude line and notified supervision. It was discovered that the drain plug in the recently replaced valve had dislodged, resulting in the release. The following wildlife was impacted by the release: one alligator, one bird, one fish, one annelid, and three turtles. An investigation is ongoing and supplemental will be filed upon completion. |
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