U.S. ENVIRONMENTAL PROTECTION AGENCY
POLLUTION/SITUATION REPORT
Garvey Elevator - Removal Polrep
Final Removal Polrep
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region VII
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Subject:
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POLREP #9
Final
Garvey Elevator
NEN000704351
Hastings, NE
Latitude: 45.5644000 Longitude: -98.4144000
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To:
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From:
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Randy Schademann, OSC
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Date:
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1/6/2014
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Reporting Period:
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July 2012 through October 2013
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1. Introduction
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1.1 Background
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Site Number: |
NEN000704351 |
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Contract Number: |
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D.O. Number: |
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Action Memo Date: |
5/1/2008 |
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Response Authority: |
CERCLA |
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Response Type: |
Time-Critical |
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Response Lead: |
EPA |
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Incident Category: |
Removal Action |
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NPL Status: |
NPL |
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Operable Unit: |
01 |
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Mobilization Date: |
5/1/2008 |
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Start Date: |
5/1/2008 |
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Demob Date: |
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Completion Date: |
10/1/2013 |
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CERCLIS ID: |
NEN000704351 |
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RCRIS ID: |
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ERNS No.: |
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State Notification: |
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FPN#: |
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Reimbursable Account #: |
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1.1.1 Incident Category
This is a time-critical, fund-lead removal action to address the release of chlorinated compounds from a grain-storage facility.
1.1.2 Site Description
Garvey Elevator operated a grain-storage/processing facility at 2315 West Highway 6, Hastings, Nebraska. Past releases of carbon tetrachloride, which was utilized as a grain fumigant, have contaminated soils and groundwater. Garvey Elevator participated in the Nebraska Department of Environmental Quality Remedial Action Plan Monitoring Act Program (RAPMA) in 1995. Since then, Garvey Elevator installed several monitoring wells, a soil-vapor extraction (SVE) system and a groundwater extraction system, and supplied some 30 area residences and business with bottled water. In December 2003, NDEQ referred the site to the EPA. In spring 2008, the EPA was notified that Garvey Elevators intended to file for bankruptcy and would discontinue operation of the system and suppling bottled water.
The EPA remedial program took over operations at the site in July 2012. The site remained open in the removal program until the Record of Decision (ROD) was finalized in the event any issues arose that would require removal action. The ROD was finalized on September 30, 2013. No removal action was conducted between July 2012, and the ROD date.
1.1.2.1 Location
The Garvey Elevator site is located at 2315 West Highway 6, Hastings, Nebraska.
1.1.2.2 Description of Threat
The groundwater contamination plume extends some four miles downgradient (east, southeast of the site) and is approximately one mile wide.
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
In 1994, carbon tetrachloride (CCL4) was identified in environmental samples as part of a Phase I Site Assessment. Since then, over 36 monitoring wells have been installed with the highest concentration of CCL4 at 29,943 micrograms per liter (ug/L). At least 40 privately-owned domestic and comercial wells have been sampled with concentrations ranging up to 300 ug/L. The Safe Drinking Water Act Maximum Contaminant Level (MCL) for CCL4 is 5 ug/L. Numerous on-site investigations have been completed at the site since 1994. Key findings from the investigations include: the dectection of CCL4 at 884 micrograms per kilogram (ug/kg) in soils; the detection of CCL4 at 29,943 ug/L in on-site groundwater; a CCL4 plume that extends some four miles downgradient of the site.
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2. Current Activities
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2.1 Operations Section
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2.1.1 Narrative
The initial fund-lead Action Memorandum was signed in August 2006.
2.1.2 Response Actions to Date
Major actions conducted under the Action Memorandum included:
- In 2009, municipal water lines were extended on Showboat Boulevard and Wabash Avenue and 13 homes were connected that were being impacted by the plume (many of those residents had been on in-house treatment systems and connection to a municipal line was deemed more cost effective in the long run).
- In 2010, a third municipal line was extended on Baltimore and five additional homes were connected. There are currently no known private wells being impacted above respective MCLs.
- The groundwater recovery and SVE systems installed by the PRP were not functioning when the Action Memorandum was signed. Numerous and various activities were conducted to bring both systems on line. Some of the major steps were to enclose the control systems, which were largely open to the elements; replace a collapsed well; replacement of numerous well pumps, motors and sensors; plumbing and electrical repairs; and regular cleaning of the well vaults.
- Near daily checks of the system. This was accomplished initially through the EPA securing an area engineer that was eventually transfered to the START contract.
- Routine sampling of both extraction systems.
- Routine sampling of residential wells outside the area of the extended municipal lines to verify that the plume had not impacted additional wells.
A report for all activities completed at the site under the removal program is provided in a Garvey Summary of Repairs report in the documents section of this site.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
Garvey Elevator is in bankruptcy.
2.1.4 Progress Metrics
Removal of carbon tetrachloride up to July 2012, by the SVE and groundwater systems since the operations were restarted by the EPA in 2008:
| Waste Stream |
Medium |
Quantity |
Manifest # |
Treatment |
Disposal |
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| SVE and ground water |
Vapor |
266 pounds |
None |
None |
Vented |
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2.2 Planning Section
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2.2.1 Anticipated Activities
2.2.1.1 Planned Response Activitie
The remedial program assumed operation and maintenance of the systems on July 31, 2012. The removal program remained engaged until the ROD was finalized September 30, 2013, in the event immediate actions were required (e.g., the plume impacted another residence). In the end, there were no significant removal actions taken since July 2012.
2.2.1.2 Next Steps
No additional removal activities are anticipated.
2.2.2 Issues
No special issues have been identified at this time.
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2.3 Logistics Section
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The on-site crew varied considerably. During normal operation, a START subcontractor provides a daily system check and ensuring report. During sampling of the SVE and groundwater network, two START personnel and the OSC are normally present.
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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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2.5.1 Safety Officer
Health and safety meetings were held only during site activities. No health and safety issues were encountered throughout the removal programs actions despite many labor intensive actions (e.g., drilling and well installation, installion of water mains).
2.6 Liaison Officer
The limited scope of this response did not warrant a Liaison Officer.
2.7 Information Officer
2.7.1 Public Information Officer
The limited scope of this removal does not warrant a PIO.
2.7.2 Community Involvement Coordinator
A CIC has been identified and coordination has occurred when necessary. The OSC provided a TV spot in June of 2008. The OSC also participated in the remedial program's public availability sessions.
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3. Participating Entities
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3.1 Unified Command
This removal did not warrant an IMT or UC.
3.2 Cooperating Agencies
NDEQ, Hastings Utilities and the City of Hastings were kept abreast of current events.
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4. Personnel On Site
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See Logistics Section.
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5. Definition of Terms
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None.
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6. Additional sources of information
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6.1 Internet location of additional information/report
None.
6.2 Reporting Schedule
This final Pol/SitRep will be the last report filed for the site for the removal program.
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7. Situational Reference Materials
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None.
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