Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2025-06-10 — CO
Operator
Public Service Co Of Colorado
Cause
Locating Issue
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
1 injury
Property damage (nominal)
$65,094
Incident datetime
2025-06-10 00:00 UTC
Report number
Location
CO
Narrative
Investigation found the locator did not sufficiently mark the facilities around the dig location. The company locator for gas transmission responded to the locate request and provided locate marks. These locate marks were identified starting from north of golden eagle road and extending southeast towards n. Chipmunk lane. The locate marks failed to extend far enough to where the drilling activities later took place on the northern side of the right of way for chipmunk ln.
Detailed record list
Report Received Date
2025-06-10 00:00:00
Iyear
2025
Report Number
20250067
Supplemental Number
41007
Report Type
Original
Operator Id
15931
Name
Public Service Co Of Colorado
Operator Street Address
3500 Blake St
Operator City Name
Denver
Operator State Abbreviation
CO
Operator Postal Code
80205
Time Zone
Mountain
Daylight Savings Ind
Yes
Location Latitude
39.65350457
Location Longitude
-106.084162
Nrc Rpt Num
1431014
Additional Nrc Report Numbers
1431185
Commodity Released Type
Natural Gas
Unintentional Release
1641
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
Yes
Num Emp Injuries
0
Num Contr Injuries
0
Num Er Injuries
0
Num Worker Injuries
1
Num Gp Injuries
0
Injure
1
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
No
Ignite Ind
No
Upstream Action Taken
Valve Closure
Downstream Action Taken
Valve Closure
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Co
Onshore Postal Code
80498
Onshore City Name
Silverthorne
Onshore County Name
Summit
Designated Location
Not Applicable
Pipe Fac Name
8" Fraser To Frisco
Segment Name
8" Fraser To Frisco - B
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
36
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
8
Puddle Weld Ind
No
Pipe Wall Thickness
0.188
Pipe Smys
42000
Pipe Specification
Api 5l X42
Pipe Seam Type
Longitudinal Erw - Low Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1969
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Mechanical Puncture
Puncture Axial
6.9
Puncture Circum
4
Class Location Type
Class 3 Location
Could Be Hca
No
Pir Radius
167
Heat Damage Ind
No
Non Heat Damage Ind
Yes
Hca Fatalities Ind
No
Did Occur In Mca Ind
Yes
Mca Buildng Human Occupy Ind
Yes
Est Cost Oper Paid
60000
Est Cost Unintentional Release
4267
Est Cost Intentional Release
0
Est Cost Prop Damage
65094
Est Cost Emergency
101962
Est Cost Other
0
Gas Cost In Mcf
2.6
Prpty
231323
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
1
Num Resident Building Affctd
50
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
558
Gas Flow In Pipe In Mcf
1306
Mop Psig
790
Mop Cfr Section
192.619(A)(1)
Maop Established Date
1969-01-01 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
Yes
Gas Odorized Ind
Yes
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Length Segment Isolated
54635
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
No
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
Investigation Status
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate)
Investigation Status Details
The incident was caused by third party damage, and the controller did not contribute to or cause 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
Public Row Ind
Yes
Public Subtype
City Street
Joint Trench Ind
No
Cross Bore Ind
Yes
Depth Of Grade
Measured Depth From Grade
Depth Of Grade Detail
36
Excavator Type
Contractor
Excavator Equipment
Directional Drilling
Work Performed
Telecommunications
One Call Notified Ind
Yes
One Call Ticket Num
A510800837
White Lined Ind
No
Locator Type
Facility Owner
Visible Marks
No
Service Interruption
Yes
Service Interruption Hours
23
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incomplete Marks At Damage Location
Preparer Name
N***** G*******
Preparer Title
Senior Engineer - Gas Standards
Preparer Email
N****************@x*********.com
Preparer Telephone
303-285-8407
Authorizer Name
C********** A****
Authorizer Title
Director - Gas Standards
Authorizer Telephone
303-571-3298
Authorizer Email
C******************@x*********.com
Narrative
Investigation found the locator did not sufficiently mark the facilities around the dig location. The company locator for gas transmission responded to the locate request and provided locate marks. These locate marks were identified starting from north of golden eagle road and extending southeast towards n. Chipmunk lane. The locate marks failed to extend far enough to where the drilling activities later took place on the northern side of the right of way for chipmunk ln.
| Report Received Date | 2025-06-10 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250067 |
| Supplemental Number | 41007 |
| Report Type | Original |
| Operator Id | 15931 PHMSA Enforcement |
| Name | Public Service Co Of Colorado |
| Operator Street Address | 3500 Blake St |
| Operator City Name | Denver |
| Operator State Abbreviation | CO |
| Operator Postal Code | 80205 |
| Time Zone | Mountain |
| Daylight Savings Ind | Yes |
| Location Latitude | 39.65350457 Google Maps OpenStreetMap |
| Location Longitude | -106.084162 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1431014 NRC Report How to search |
| Additional Nrc Report Numbers | 1431185 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 1641 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | Yes |
| Num Emp Injuries | 0 |
| Num Contr Injuries | 0 |
| Num Er Injuries | 0 |
| Num Worker Injuries | 1 |
| Num Gp Injuries | 0 |
| Injure | 1 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Downstream Action Taken | Valve Closure |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Co |
| Onshore Postal Code | 80498 |
| Onshore City Name | Silverthorne |
| Onshore County Name | Summit |
| Designated Location | Not Applicable |
| Pipe Fac Name | 8" Fraser To Frisco |
| Segment Name | 8" Fraser To Frisco - B |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 36 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 8 |
| Puddle Weld Ind | No |
| Pipe Wall Thickness | 0.188 |
| Pipe Smys | 42000 |
| Pipe Specification | Api 5l X42 |
| Pipe Seam Type | Longitudinal Erw - Low Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1969 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Mechanical Puncture |
| Puncture Axial | 6.9 |
| Puncture Circum | 4 |
| Class Location Type | Class 3 Location |
| Could Be Hca | No |
| Pir Radius | 167 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | Yes |
| Hca Fatalities Ind | No |
| Did Occur In Mca Ind | Yes |
| Mca Buildng Human Occupy Ind | Yes |
| Est Cost Oper Paid | 60000 |
| Est Cost Unintentional Release | 4267 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 65094 |
| Est Cost Emergency | 101962 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 2.6 |
| Prpty | 231323 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 1 |
| Num Resident Building Affctd | 50 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 558 |
| Gas Flow In Pipe In Mcf | 1306 |
| Mop Psig | 790 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 1969-01-01 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | Yes |
| Gas Odorized Ind | Yes |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Length Segment Isolated | 54635 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | No |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| Investigation Status | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate) |
| Investigation Status Details | The incident was caused by third party damage, and the controller did not contribute to or cause 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 |
| Public Row Ind | Yes |
| Public Subtype | City Street |
| Joint Trench Ind | No |
| Cross Bore Ind | Yes |
| Depth Of Grade | Measured Depth From Grade |
| Depth Of Grade Detail | 36 |
| Excavator Type | Contractor |
| Excavator Equipment | Directional Drilling |
| Work Performed | Telecommunications |
| One Call Notified Ind | Yes |
| One Call Ticket Num | A510800837 |
| White Lined Ind | No |
| Locator Type | Facility Owner |
| Visible Marks | No |
| Service Interruption | Yes |
| Service Interruption Hours | 23 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incomplete Marks At Damage Location |
| Preparer Name | N***** G******* |
| Preparer Title | Senior Engineer - Gas Standards |
| Preparer Email | N****************@x*********.com |
| Preparer Telephone | 303-285-8407 |
| Authorizer Name | C********** A**** |
| Authorizer Title | Director - Gas Standards |
| Authorizer Telephone | 303-571-3298 |
| Authorizer Email | C******************@x*********.com |
| Narrative | Investigation found the locator did not sufficiently mark the facilities around the dig location. The company locator for gas transmission responded to the locate request and provided locate marks. These locate marks were identified starting from north of golden eagle road and extending southeast towards n. Chipmunk lane. The locate marks failed to extend far enough to where the drilling activities later took place on the northern side of the right of way for chipmunk ln. |
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