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1. Introduction
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1.1 Background
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Site Number: |
Z8FN |
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Contract Number: |
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D.O. Number: |
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Action Memo Date: |
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Response Authority: |
OPA |
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Response Type: |
PRP Oversight |
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Response Lead: |
PRP |
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Incident Category: |
Removal Action |
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NPL Status: |
Non NPL |
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Operable Unit: |
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Mobilization Date: |
1/23/2015 |
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Start Date: |
1/8/2015 |
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Demob Date: |
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Completion Date: |
5/17/2016 |
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CERCLIS ID: |
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RCRIS ID: |
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ERNS No.: |
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State Notification: |
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FPN#: |
E15805 |
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Reimbursable Account #: |
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1.1.1 Incident Category
Emergency Response – OPA Removal and CERCLA Removal Assessment
1.1.2 Site Description
The response action underway by the RP follows a reported 70,000 barrel release of produced water including oil from a 4 inch pipeline that conveys produced water from a reported 37 (note corrected number) oil well pads to a disposal well. The release impacted a small creek (Blacktail Ck) a tributary to the Little Muddy River north of Williston, ND. Reportedly the potential line break was discovered on January 6, 2015, and the line was shut-down. No volume of discharge was reported in the original NRC report on January 7th.
1.1.2.1 Location
The site is located approximately 17 miles north of Williston near Marmon, ND. The produced water collection pipeline break occurred in an open field approximately 300 feet from Blacktail Creek.
1.1.2.2 Description of Threat
Impacts to surface water quality observed as far as the Little Muddy River near the confluence with the Missouri River.
Groundwater contamination continues to be present in the form of high chloride and hydrocarbon levels above state water quality standards. Domestic wells are located downstream, east of Hwy 85 at the nearby residents. These wells are reportedly shallow drinking water wells.
1.1.2.3 Site Evaluation Results
Follow up inspections performed by the North Dakota Department of Health in May of 2016 found no presence of oil on the surface water based on visual observations.
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2. Current Activities
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2.1 Operations Section
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2.1.1 Narrative
Response operations by the RP continued during the reporting period including pumping of contaminated alluvial groundwater from the interceptor trench / sump system and oil recovery from the surface water. Oil assessment activities along the banks of the creek were also conducted including routine surface water and ground monitoring well sampling.
State oversight continued during this period.
2.1.2 Response Actions to Date
- Oil removal activities were generally completed in 2015 with monitoring conducted to assess for residual oil discharge to the surface water.
- Groundwater recovery operations continue under state oversight to recovery high chloride and hydrocarbon impacted ground water within the alluvial aquifer near the creek.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
Oversight of the cleanup operations will continue to be performed by the NDDOH.
2.1.4 Progress Metrics
| Waste Stream |
Medium |
Quantity |
Manifest # |
Treatment |
Disposal |
| Oil |
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recycle |
| Brine/Produced Water |
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UIC |
| soil |
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Landfill |
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2.2 Planning Section
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2.2.1.1 Planned Response Activities
Continue recovering groundwater from the interception trenches and sumps. No further oil recovery on surface water is planned.
2.2.1.2 Next Steps
NA
2.2.2 Issues
None
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2.3 Logistics Section
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NA
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2.4 Finance Section
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No information available at this time.
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2.5 Other Command Staff
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No information available at this time.
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3. Participating Entities
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3.1 Unified Command
NA
3.2 Cooperating Agencies
USFWS
DOI
USACE
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4. Personnel On Site
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Unknown
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5. Definition of Terms
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No information available at this time.
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6. Additional sources of information
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6.1 Internet location of additional information/report
6.2 Reporting Schedule
None
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7. Situational Reference Materials
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No information available at this time.
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