| Action Date |
Action |
Description |
DEC Staff |
| 2/15/1996 |
Site Added to Database |
Site added to database. |
Bill Wright |
| 2/22/1996 |
Site Ranked Using the AHRM |
Site ranked. |
Bill Wright |
| 9/9/1997 |
Site Ranked Using the AHRM |
Site reranked. Changed Air Exposure Index Value from 0.1 to 0.2; GW Usage Value from 0.1 to 0.4; and SW Usage Value from 0.5 to 1. Former score was 24. |
Scott Pexton |
| 9/12/1997 |
Site Ranked Using the AHRM |
Site reranked. Changed Air Exposure Index Value from 0.2 to 0.1. Former score was 0. |
Scott Pexton |
| 7/20/1998 |
Site Characterization Workplan Approved |
Letter sent with approval of Site Sampling Plan prepared by Ogden Environmental. |
Scott Pexton |
| 5/10/1999 |
Update or Other Action |
Received Draft Remedial Investigation Report prepared by Ogden Environmental. |
Scott Pexton |
| 1/22/2004 |
Update or Other Action |
ADEC received draft Alternate Cleanup Level Demonstration Project workplan. |
Beatrice Egbejimba |
| 3/22/2004 |
Update or Other Action |
File number assigned: 2434.38.001. |
Sarah Cunningham |
| 5/24/2005 |
Update or Other Action |
Staff reviewed the Installation Action Plan and sent the following comments.
The IAP includes the results of a site investigation and a remedial investigation (RI) that indicate diesel range organics up to 6000 mg/kg and residual range organics up to 50,000 mg/kg are present in surface soil at the site. The samples had high moisture and organic content and the results are questionable. The Newtok Federal Scout Armory is located on a wetland.
The introduction to the IAP states that there was an interim removal action (IRA) during which 60 cubic yards of contaminated soil was excavated. The Alaska Department of Environmental Conservation (DEC) has no information on this action in our files. The IAP does not provide any further information on the IRA. Please provide a copy of the IRA report to me and include a summary of the action in the IAP. The IAP introduction also states that there is a possible off-site source for petroleum contamination but does not provide any supporting information. This should be expanded upon in the IAP and the Alaska Army National Guard should notify the persons responsible for this off-site source.
Photographs in the RI show a pipeline on the ground on the north side of the armory. This pipeline is not included in the RI report. The current use of this pipeline should be determined and an investigation of its integrity should be preformed. If the pipeline is not in use, it should be cleaned and removed.
DEC does not have enough information at this time to agree that no further action is appropriate. Potential impact to the wetland needs to be assessed. When the alternative cleanup level demonstration results are available, DEC would like to work with the AKARNG to determine the most appropriate actions for the site. |
Debra Caillouet |
| 1/26/2006 |
Update or Other Action |
Staff reviewed an Alternative Cleanup Level Demonstration Report and provided comments to the AKARNG. The site observations section of this report indicates the potential for improper disposal of drums and debris creating a sheen on the surface water at the site. The Alaska Army National Guard should remove the drums and debris and characterize any contents in the drums and the surrounding soil and surface water for potential contamination. |
Debra Caillouet |
| 5/12/2006 |
Update or Other Action |
Site status changed to active based on reciept of Site Characterization and Restoration-Related Activities project |
Debra Caillouet |
| 5/15/2006 |
Update or Other Action |
Staff sent a comment letter on the Site Characterization and Restoration-Related Activities project work plan |
Debra Caillouet |
| 8/23/2006 |
Site Characterization Workplan Approved |
Site Characterization and Restoration-Related Activities project work plan was approved. |
Debra Caillouet |
| 4/1/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Debra Caillouet |
| 6/17/2008 |
Site Characterization Report Approved |
Final Remedial Investigation Report, Site Characterization and Restoration-Related Activities Project, Newtok Federal Scout Armory, May 2008
The report incorporates acceptable responses to comments previously provided by DEC and it meets the requirements of 18 AAC 75.335, Site Characterization. The report is therefore approved.
It is my understanding that the Alaska Army National Guard (AKARNG) is currently reviewing the report and in the future will submit a Decision Document (DD) containing the remedy that the AKARNG has selected for the site. Upon receipt of the DD, DEC will make a decision on the acceptability of the proposed remedy and cleanup levels for the Newtok Federal Scout Armory.
|
Debra Caillouet |
| 9/9/2008 |
Update or Other Action |
Comments were sent to the AKARNG on a draft Record of Decision. |
Debra Caillouet |
| 1/30/2009 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 72536 name: Spills/Leaks |
Debra Caillouet |
| 2/3/2010 |
Meeting or Teleconference Held |
Staff participated in the Installation Action Plan meeting. |
Debra Caillouet |
| 2/22/2010 |
Update or Other Action |
comment was sent on the draft ROD. |
Debra Caillouet |
| 3/9/2010 |
Record of Decision |
Signed for ingestion/inhalation cleanup levels. Migration to groundwater pathway incomplete. |
Debra Caillouet |
| 4/7/2010 |
Record of Decision |
The Alaska Army National Guard (AKARNG) resubmitted the ROD with revisions of the contact person and the signatory for the AKARNG and inserting an AEDB-R number. |
Debra Caillouet |
| 8/6/2010 |
Cleanup Plan Approved |
Final Remedial Action Plan, Federal Scout Armory, Newtok, Alaska, August 2010
The plan meets the requirements of 18 AAC 75.360 Cleanup Operation Requirements and is approved.
|
Debra Caillouet |
| 10/21/2011 |
Document, Report, or Work plan Review - other |
Draft Remedial Action Report, Federal Scout Armory, Newtok, Alaska and Request for Determination of Cleanup Complete. The report documents the removal of 25 1-yd3 Super Sacks of soil contaminated with diesel range organics (DRO) and residual range organics (RRO) and transport off-site for disposal. Confirmation samples were obtained at the limits of the excavations. All results were below the Record of Decision cleanup levels of: 10,250 mg/kg DRO, 10,000 mg/kg RRO, 11 mg/kg benzene, 220 mg/kg toluene, 110 mg/kg ethylbenzene, and 63 mg/kg xylenes. These cleanup levels were based on the human health pathways of ingestion and/or inhalation as the migration to groundwater pathway was determined to be incomplete.
The requirements of 18 AAC 75.380, Final Reporting Requirements have partially been met. The DEC can determine that the cleanup is complete and the site is closed when the documentation of the soil disposal is provided.
|
Debra Caillouet |
| 12/14/2011 |
Cleanup Complete Determination Issued |
|
Debra Caillouet |
| 6/18/2012 |
Update or Other Action |
File is archived in barcode 587284. |
Susan Carberry |
