| Action Date |
Action |
Description |
DEC Staff |
| 5/25/1995 |
Update or Other Action |
UPD action added by Shannon and Wilson, Inc., on 02/19/1997 based on Relative Risk Evaluation Worksheet dated 5/25/95. Tank Improvement is actual action, no appropriate action code available. |
S&W-Miner |
| 11/14/1996 |
Site Added to Database |
Site added by Shannon and Wilson. |
S&W-Miner |
| 4/15/2000 |
Record of Decision |
The Record of Decision for this site was signed this date. |
Elim Yoon |
| 5/8/2001 |
Update or Other Action |
Status changed to Non-Qualifying. |
Elim Yoon |
| 12/28/2001 |
Institutional Control Record Established |
Institutional Control Established. Includes Equitable Servitude for: Residential Land Use Restrictions, Groundwater Restrictions, Excavation permit required for areas with Soil Excavation Restrictions, and requirements for Inspections and Reporting. See document “Adak Island Institutional Control Management Plan, Final Edition, December 2001, Prepared by: Engineering Field Activity, Northwest.” |
Elim Yoon |
| 3/1/2003 |
Update or Other Action |
The 2001 Annual Groundwater Monitoring Report was received. Analytes above cleanup criteria for most wells at site. Navy recommends continuing monitoring as prescribed.
|
Meghan Dooley |
| 6/17/2004 |
Update or Other Action |
Comments for the 2003 Annual Groundwater Monitoring report were sent. General concerns include: the field team may not be familiar with the requirements in the CMP and SOP, and changes in ARARs.
|
Meghan Dooley |
| 8/30/2004 |
Conditional Closure Approved |
Part of Arctic Acres Housing Area remediation; NFRAP; Site located in downtown GW and dig restriction area. |
Jason Weigle |
| 9/7/2004 |
Update or Other Action |
The 2003 Annual Groundwater Monitoring Report was received on this date. Well AA-01 has met endpoint criteria for DRO in the 2002 and 2003 sampling events. Well 03-416 was observed to have DRO and RRO below endpoint criteria in 2003, but 2002 saw DRO above endpoint criteria. DRO was observed above endpoint criteria. The navy recommends continued monitoring for natural attenuation annually at 03-420 and 03-416, but reduced monitoring frequency (biannually or twice per 5 year review period) at well AA-01.
|
Meghan Dooley |
| 10/19/2004 |
GIS Position Updated |
Latitude and Longitude was derived using ArcGIS with either High Resolution Aerial Photography from the Navy with an up to 3 meters error, or line maps used in investigations combined with road layers, +/-25 feet accuracy. Metadata is as follows: Updated NAD 1983 State Plane Alaska 10 FIPS 5010 Feet; Projection: Lambert Conformal Conic; False Easting: 3280833.333333; False Northing: 0.000000; Central Meridian: -176.000000; Standard Parallel 1: 51.833333; Standard Parallel 2: 53.833333; Latitude of Origin: 51.000000; GCS North American 1983. |
Jason Weigle |
| 2/8/2005 |
Update or Other Action |
Interim conveyance document contains an equitable servitude that restricts the domestic use of groundwater. Site is also located in the downtown excavation notification zone. |
Jason Weigle |
| 2/17/2005 |
Update or Other Action |
2004 Annual Monitoring report received. |
Jason Weigle |
| 3/4/2005 |
Update or Other Action |
Review of Draft 2004 Annual Monitoring report completed. |
Jason Weigle |
| 3/7/2005 |
Update or Other Action |
Added MRTS data, derived from ADNR and USGS range, township, and section data overlaid on lat/lon coordinates derived previously. Accuracy is equivalent to the lat/lon coordinates. MRTS information depicts the center point of range fans and target areas; actual target areas or fans may overlap several sections. |
Jason Weigle |
| 5/23/2005 |
Update or Other Action |
Wells added in 2001; limited groundwater monitoring began in 2002 |
Jason Weigle |
| 3/20/2006 |
Update or Other Action |
Final 2005 Institutional Control Primary Site Inspection Report received on this date. No IC problems noted at this site. |
Jason Weigle |
| 3/20/2006 |
Update or Other Action |
The draft annual groundwater monitoring report for 2005 was received on this date. |
Jason Weigle |
| 4/5/2006 |
Update or Other Action |
File number 2501.38.003.01 assigned on this date. |
Jason Weigle |
| 4/7/2006 |
Update or Other Action |
Comments on Groundwater Monitoring Report submitted to the Navy. Free product was found in wells 03-890 and 03-421. DRO concentrations increase slightly in well 03-420. Not enough data was collected to establish a statistically significant trend. |
Jason Weigle |
| 12/18/2006 |
Update or Other Action |
Received Draft 2006 Institutional Control Primary Site Inspection Report that details the results of annual Institutional Control (IC) inspections to determine the effectiveness of IC's selected in the OUA Record of Decision. |
Guy Warren |
| 12/27/2006 |
Update or Other Action |
Submitted comment letter to the Navy on the Draft Institutional Control Primary Site Inspection Report. Comments focused on the adequacy of the excavation notification program, the effectiveness of the ordnance awareness program, and visitor notification of ICs. |
Guy Warren |
| 2/15/2007 |
Update or Other Action |
Received Draft Annual Ground Water Monitoring Report, which presents the results of September 2006 ground water monitoring activities at 24 sites at the Former Adak Naval Complex. |
Guy Warren |
| 3/13/2007 |
Update or Other Action |
Received the Final 2006 Institutional Control Primary Site Inspection Report. Several Department comments will be addressed through revisions of the Institutional Control Management Plan planned for 2007. The remaining comments were addressed and additional recomendations to increase efforts to notify island visitors of ICs (including the ordnance awareness education program) were included in the final document. |
Guy Warren |
| 4/25/2007 |
Update or Other Action |
Submitted comments on the Draft Annual Ground Water Monitoring Report. Primary areas of concern include: increasing trends in contaminant levels at several sites, Increased free product, and adherence to field sampling procedures. In general it appears that declining ground water levels are responsible for the increase in free product and dissolved contaminant concentrations. The Navy and DEC have agreed to reinstate free product recovery at those sites showing increases in free product. |
Guy Warren |
| 7/26/2007 |
Update or Other Action |
Received Final Annual Ground Water Monitoring Report, September 2006. The Department's comments have been addressed in the Final Report. The Navy has agreed to conduct additional free product recovery at those sites with increassed free rpoduct. The Navy has agreed to evaluate conditions at several sites with increasing contaminant trends to determine if additional investigation or remediaiton is required. |
Guy Warren |
| 3/28/2008 |
Update or Other Action |
The comments for the draft 2007 Annual Groundwater Monitoring Report were sent. General concerns include: consistency of groundwater depth and flow measurements between sites, reporting of free product recovery methods and results, inclusion of the Petroleum Summary Report in recommendations for applicable sites in this report, tracking changes to the CMP, and extending surface water and sediment monitoring to appropriate sites. ADEC also recommends that wells 03-890 and 03-421 be included in ongoing free product recovery efforts.
|
Meghan Dooley |
| 8/14/2008 |
Update or Other Action |
The 2007 Annual Groundwater monitoring Report was received on this date. The Navy recommends continuing monitoring as prescribed, although AA-01 has been removed from the monitoring network.
|
Meghan Dooley |
| 5/20/2009 |
Update or Other Action |
The comments for the draft 2008 Annual Groundwater Monitoring Report were sent. General concerns include: adequacy of the MNA remedy and increasing contaminant levels, implementation of recommendations from the Petroleum Summary Report, effects of the March 2008 earthquake and documentation in the report, the monitoring well network, and the inclusion of useful photos.
|
Meghan Dooley |
| 8/21/2009 |
Update or Other Action |
The 2008 Annual Groundwater Monitoring Report was received on this date. The Navy recommends continuing monitoring as prescribed for this site.
|
Meghan Dooley |
| 3/12/2010 |
Update or Other Action |
The draft 2009 Annual Groundwater Monitoring Report was received on this date. The Navy recommends no changes to the monitoring program for this site.
|
Meghan Dooley |
| 4/15/2010 |
Update or Other Action |
Comments for the draft 2009 Annual Groundwater Monitoring Report were sent on this date. ADEC concurs with the recommendations for this site.
|
Meghan Dooley |
| 12/2/2010 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 73231 name: auto-generated pm edit Adak Housing Area (Arctic Acres) |
Meghan Dooley |
| 12/3/2010 |
Document, Report, or Work plan Review - other |
The draft 2010 Land Use Controls Repair/Improvement Closure Report was received on November 18, 2010. The report discusses the field work activities during the summer of 2010 that occurred at various sites. Gates, fencing, swales, and signs were either installed or repaired as part of institutional and engineering controls. 5 monitoring wells were decommissioned and 1 well monument was repaired. Measures were taken to prevent erosion at various landfills and along roads. Site restoration activities took place in order to repair areas impacted by construction. Minor comments were sent to the Navy via email on December 3, 2010. One well was repaired and three wells were decomissioned in Arctic Acres to prevent infiltration of water or other substances to the groundwater. |
Meghan Dooley |
| 2/16/2011 |
Document, Report, or Work plan Review - other |
The draft 2010 IC Site Inspection Report was received on January 11, 2011 and DEC sent comments on February 16, 2011. There were no observed problems with ICs at this site. |
Meghan Dooley |
| 5/12/2011 |
Document, Report, or Work plan Review - other |
The Final 2010 IC Site Inspection Report was received by ADEC. ICs appear to be functioning as intended at this site. |
Meghan Dooley |
| 6/27/2011 |
CERCLA ROD Periodic Review |
The draft Third 5-Year Review was received. The purpose of the 5-Year Review is to evaluate the effectiveness of the remedy and determine if further action is warranted to protect human health and the environment. The document listed actions taken to address issues from the previous 5-Year Review, and offered new recommendations based on data collected from 2006 to 2010 from Operable Units A and B-1. It concluded that the remedy is functioning as intended at all but 4 sites and provided the following area-wide recommendations:
1. Update the current Comprehensive Monitoring Plan, Institutional Control Monitoring Plan, Operation and maintenance Plan,
2. Update the document repositories,
3. Assess and update as necessary the Community Relations Plan, and
4. Address action items identified during 2010 site inspections.
The 5-Year Review recommends continuing groundwater and free product monitoring as prescribed at Housing Area Arctic Acres. It recommends discontinuing free product recovery on a 6-times per year basis because it is not required by the CMP or the ROD.
|
Meghan Dooley |
| 7/11/2011 |
Document, Report, or Work plan Review - other |
The Final 2010 Annual Groundwater Monitoring Report was received. The report recommends discontinuing monitoring at wells 03-422, AA-02, and AA-06. |
Meghan Dooley |
| 5/1/2012 |
Document, Report, or Work plan Review - other |
Submit comments to the Navy of the Draft 2011 Annual Groundwater Monitoring Report. Draft report recomends no changes to monitoring program at site. ADEC comment requests change in site monitoring frequency to every other year. Recomendation is based on positive evidence of Natrual attenuation and no impacts to surface water. |
Guy Warren |
| 10/16/2012 |
Document, Report, or Work plan Review - other |
Submit acceptance letter to Navy regarding Final 2011 Annual Ground Water Monitoring. ADEC recommended change to site monitoring frequency has been accepted. Monitorign will revert to every other year. |
Guy Warren |
| 6/4/2013 |
Institutional Control Periodic Reporting |
The 2012 Institutional Controls Inspection Report was received by ADEC. There were no indications of groundwater use, changes in land use, or unauthorized excavation. Signs were intact and visible. ICs appear to be functioning as intended. |
Meghan Dooley |
| 9/4/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 73231 Adak Housing Area (Arctic Acres). |
Guy Warren |
| 9/8/2014 |
Document, Report, or Work plan Review - other |
Received, Final 2013 Annual Groundwater and Landfill Monitoring Report for Adak Alaska. DRO remains above monitoring endpoint criteria. No changes recommended to monitoring program. |
Guy Warren |
| 9/10/2014 |
Institutional Control Periodic Reporting |
The 2013 Institutional Controls Inspection Report was received by ADEC. There were no indications of groundwater use, changes in land use, or unauthorized excavation. Signs were intact and visible. ICs appear to be functioning as intended. IC inspection frequency has been reduced to every odd year. |
Guy Warren |
| 7/16/2017 |
Site Visit |
ADEC completed a three day site visit to Adak NAVFAC. All active sites were visited and current status discussed at length with NAVFAC representatives. Current field work activities were observed and noted. Work plan activities were proceeding as scheduled. No work plan deviations were evident. |
Darren Mulkey |
| 5/23/2018 |
Site Characterization Report Approved |
Annual Groundwater and Landfill Monitoring Report, 2017 Long-Term Monitoring, Operable Unit A was finalized. Natural attenuation of petroleum hydrocarbons has been demonstrated on Adak. As a result, the CMP, Revision 6 (Navy 2014) prescribed natural attenuation parameter (NAP) monitoring once every 5 years. This monitoring was last conducted in 2014 at all MNA sites. |
Darren Mulkey |
| 10/24/2018 |
Document, Report, or Work plan Review - other |
Reviewed and approved Adak Comprehensive Monitoring Plan Revision 7, Operable Unit A. All LTM sites are updated for ground and surface water monitoring. |
Darren Mulkey |
| 3/6/2019 |
Document, Report, or Work plan Review - other |
During the 2018 monitoring event, groundwater, surface water, and sediment samples were collected from 123 monitoring locations at 19 sites. Product thickness and depth to water measurements were performed at 159 locations from these sites. Monitoring was conducted to satisfy Operable Unit A Record of Decision (Navy, ADEC, and EPA 2000) remedy requirements and subsequent to free product recovery remedy requirements that were established under the State-Adak Environmental Restoration Agreement (Navy and ADEC 1994). Monitoring was conducted to assess the remedies of monitored natural attenuation, limited groundwater monitoring, surface water protection, and compliance. Based on the previous monitoring results, the monitored natural attenuation remedies appear to be effective and biodegradation appears to be occurring to varying degrees at all of the monitored natural attenuation sites (Navy 2017). Monitoring for natural attenuation parameters has been reduced from annually to every 4 to 6 years to coincide with the next 5-year review, and was conducted in 2018.
Because DRO concentration remains at or above the endpoint criterion in the currently monitored site wells, it is recommended that groundwater monitoring continue as prescribed. |
Darren Mulkey |
| 8/18/2022 |
Site Visit |
CS Staff conducted a site visit on Adak Island from August 10-13, 2022. |
Jamie McKellar |
| 3/11/2024 |
ANCSA Program Eligible |
This site meets the criteria for the EPA Contaminated ANCSA Lands program: the site is on ANCSA conveyed land, the contamination occurred pre-ANCSA conveyance, and there is documented proof of contamination that exceeds DEC’s cleanup values in 18 AAC 75. This site will be listed as “verified” on EPA’s contaminated lands inventory. |
Brittani Mack |
| 8/9/2024 |
Long Term Monitoring Workplan or Report Review |
WASTE MANAGEMENT PLAN APPROVED: Final Waste Management Plan 2024 Long-Term Monitoring at Operable
Unit A and 2024 Waste Management Plan Addendum (via email). |
Jamie McKellar |
| 8/21/2024 |
Site Visit |
CS staff conducted site visits and attended a Regional Advisory Board (RAB) meeting on Adak Island. During the trip, CS staff and representatives from the US Navy also participated in a “RAB Field Day” organized by a RAB member who wanted to highlight some issues of concern - petroleum contamination at Sweeper Creek, the spillway at Lake Andrew, and munitions concerns in Parcel 4. While on the island, CS staff also met with contractors conducting PFAS sampling and long-term monitoring activities, and CS staff attended a community meeting hosted by the Aleut Corporation (TAC) and its contractor to discuss the community’s Brownfields Community Wide Assessment Grant. |
Jamie McKellar |
