| Action Date |
Action |
Description |
DEC Staff |
| 1/1/1994 |
Update or Other Action |
Site included in State-Navy two-party SAERA agreement for petroleum sites. |
Former Staff |
| 10/12/1994 |
Site Added to Database |
TPH. |
Former Staff |
| 6/16/1995 |
Site Ranked Using the AHRM |
Initial ranking. Action code added because it wasn't when the site was originally ranked. |
Former Staff |
| 5/1/1998 |
Proposed Plan |
Site to be included in the ROD for OU-A. |
Christina Goff |
| 9/1/1999 |
Update or Other Action |
Site included in ROD for OU-A and recommended for monitored natural attenuation due to unacceptable human health risk from petroleum hydrocarbons. Institutional controls required. |
Kevin Oates |
| 4/15/2000 |
Record of Decision |
The Record of Decision for this site was signed this date. |
Elim Yoon |
| 5/9/2001 |
Update or Other Action |
Three actions were located in the 20 deleted sites that were subordinate to this site and duplicated for each of the 20 sites. They are the following listed in chronological order:
Update; 10/15/1993; Patrick-Riley; (Old R:Base Action Code = NOR - Notice of Release Letter (LUST)). Notice of release letter received and ADEC reply letter sent.
Preliminary Assessment Approved; 3/31/1994; Patrick-Riley; (Old R:Base Action Code = SA1R - Phase I SA Review (CS/LUST)). Reviewed phase 1 site assessment report. Contamination identified and reported above cleanup level.
Site Added to Database; 10/26/1995; Pexton; Site added to database. |
Former Staff |
| 12/28/2001 |
Institutional Control Record Established |
Institutional Control Established. Includes Equitable Servitude for: Commercial/Industrial 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 |
Final 2001 Annual Groundwater Monitoring Report received. Recommendations include continued Monitored Natural Attenuation. Navy also recommended changes in natural attenuation parameter measurements including chloride, total and dissolved organic carbons, nitrate/nitrites, sulfides, and ORP.
|
Meghan Dooley |
| 10/10/2003 |
Record of Decision |
Site removed from OU A ROD by OU A ROD Amendment; will be regulated under 18 AAC 75. |
Sami Goldman |
| 5/26/2004 |
Update or Other Action |
Received September 2003 Annual Groundwater Monitoring Report.
|
Meghan Dooley |
| 6/17/2004 |
Update or Other Action |
ADEC Comments for the Draft September 2003 Annual Groundwater Monitoring Report sent. Concerns include: field team familiarity with CMP and changes in ARAR's following the establishment of the OU-A ROD.
|
Meghan Dooley |
| 9/1/2004 |
Update or Other Action |
RAC; site in IC monitoring program |
Jason Weigle |
| 9/7/2004 |
Update or Other Action |
Received Final 2003 Annual Ground Water monitoring Report. Navy recommends that well TFB-MW4B be discontinued due to GRO and BTEX levels below the endpoint criteria during 2002 and 2003. All other current monitoring schedules should be maintained.
|
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 |
| 2/17/2005 |
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 |
| 3/8/2005 |
Update or Other Action |
Added legal description for site. |
Jason Weigle |
| 5/23/2005 |
Update or Other Action |
Final 2004 Annual Groundwater Monitoring Report received. Navy recommends reduction in NAP monitoring at wells 14-113, 14-210 and TFB-MW4B be reduced to once every five years, but to continue GRO and BTEX groundwater monitoring at the current schedule.
|
Meghan Dooley |
| 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 the 2005 annual groundwater monitoring report submitted. 2005 monitoring data shows that contaminant levels remain high at this site. GRO and benzene continue to be issues at well 14-113. GRO is the main issue at well 14-210. TFB-MW4B is the most impacted well with GRO, benzene, toluene, ethylbenzene, and xylene contamination all above clean-up levels. GRO and benzene at well TFB-MW4B remains significantly above background levels. If 2006 data indicates no changes in contamination levels, the Department will ask the Navy to reconsider the remedy for this site. |
Jason Weigle |
| 6/9/2006 |
Update or Other Action |
Final 2005 Annual Groundwater Monitoring Report received. Continued annual monitoring is recommended for site as GRO and BTEX levels remain above cleanup level. Navy recognizes the potential for migration of hydrocarbons into surface water and therefore recommends visual inspection for signs of petroleum seeps and sheen on the surface water bodies proximal to the groundwater monitoring points.
|
Meghan Dooley |
| 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 (including SWMU 61) with increasing contaminant trends to determine if additional investigation or remediaiton is required. |
Guy Warren |
| 12/21/2007 |
Update or Other Action |
Received Draft Petroleum Summary Report for sites Antenna Field, SA79, Former Power Plant, SWMU 60, and SWMU 61 at the former Adak Naval Complex. The report summarizes the investigation activities that have been conducted at these sites to date. The report recommends adding surface water sampling from two locations to the annual monitoring program. |
Guy Warren |
| 1/9/2008 |
Update or Other Action |
Submitted comments on the Draft Petroleum Summary Report (PSR) to the Navy. The Navy’s recommendations for additional monitoring at this site are totally inadequate to deal with the zone of contaminated ground water flowing into North Sweeper Creek. The Department is requesting that the Navy conduct ground water remediation at this site to prevent petroleum from impacting surface water quality. |
Guy Warren |
| 2/13/2008 |
Update or Other Action |
Draft 2007 Annual Groundwater Monitoring Report received.
|
Meghan Dooley |
| 3/25/2008 |
Update or Other Action |
Final 2008 Petroleum Summary Report received. Exceedences in clean up levels for petroleum-related contaminants were found in both groundwater and soil. The Navy recommends that the existing remedy be evaluated for augmentation options via an EE/CA. Options evaluated should include an interception/treatment barrier and source removal. Planning efforts will likely be completely by 2008 with a field effort to follow in 2009.
|
Meghan Dooley |
| 3/28/2008 |
Update or Other Action |
Submitted comments on the Draft Annual Ground Water Monitoring Report. Primary areas of concern include: consistency in recommendations for depth to water measurements in determining groundwater elevation, consistency throughout sampling and reporting of FPR, optimization of monitoring regimes at specific sites, consistency in the petroleum summary report, and incorporating changes agreed to into the CMP.
|
Meghan Dooley |
| 6/27/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Evonne Reese |
| 8/18/2008 |
Update or Other Action |
Final 2007 Annual Groundwater Monitoring Report received. Navy recommends continuing surface water sampling for GRO, TAH and TAqH as well as sediment sampling for GRO and BTEX at location NL-04 for one more year. Annual monitoring should be continued for all other sites, and an EE/CA will be prepared for 2008.
|
Meghan Dooley |
| 3/20/2009 |
Update or Other Action |
Draft 2008 Annual Groundwater Monitoring Report received.
|
Meghan Dooley |
| 5/14/2009 |
Update or Other Action |
File number 2501.38.003.23 assigned on this date. Previous site specific information can be found in 2501.38.003.01. |
Guy Warren |
| 5/20/2009 |
Update or Other Action |
ADEC comments sent for 2008 Annual Groundwater Monitoring Report. Concerns include: increasing concentrations of contaminants at several sites and the adequacy of the MNA remedy at these sites, data consistency regarding an increase in oil seepage into East Canal not included in monthly reports. DEC is also concerned about destroyed monitoring wells and the possibility that they are not being replaced if essential to meeting objectives. ADEC recommends that the navy inventory all wells required for annual monitoring, properly decommission un-needed wells, and secure those where monitoring is necessary. ADEC also recommends that for those sites showing a trend increase, an evaluation should be performed in order to determine if additional action is necessary. SWMU 61 recommendations from the Petroleum Summary Report have not yet been implemented and recommendations for TAH and TAqH exceedences should be addressed.
|
Meghan Dooley |
| 8/21/2009 |
Update or Other Action |
Final 2008 Annual Groundwater monitoring Report received. Navy recommends sampling for sediments and surface water at NL -04 should continue as prescribed until sediment concentrations decrease. Other site monitoring will continue on an annual basis. An increase in xylene was noted. An EE/CA, to be conducted in 2009, is recommended to further evaluate other remedy options and implementation.
|
Meghan Dooley |
| 3/11/2010 |
Update or Other Action |
Draft 2009 Annual Groundwater Monitoring Report received. Navy recommends collection of surface water samples annually at locations NL-04 and NL-D-04 for DRO, GRO, TAH, and TAqH. Sediment samples for DRO, GRO and BTEX are also recommended for these sites, with silica gel cleanup prior to analysis.
|
Meghan Dooley |
| 3/15/2010 |
Update or Other Action |
Draft EE/CA received. EE/CA evaluates 8 alternatives (including no action) to supplement the current MNA program of the ROD in order to prevent further degradation of surface water quality in North Sweeper Creek.
|
Meghan Dooley |
| 4/8/2010 |
Update or Other Action |
ADEC comments for EE/CA sent.
|
Meghan Dooley |
| 4/15/2010 |
Update or Other Action |
ADEC comments sent for 2009 Annual Groundwater Monitoring Report. Concerns include increasing trends of contaminants at several sites. ADEC concurs with Navy recommendations at many sites that include cessation of some monitoring, however does not concur with Navy at sites showing an increasing trend in contaminant concentrations. ADEC concurs with recommendations regarding SWMU 61.
|
Meghan Dooley |
| 5/27/2010 |
Update or Other Action |
The Draft SAP Additional Petroleum Characterization and figures were received. |
Meghan Dooley |
| 7/9/2010 |
Site Visit |
ADEC visited Tank Farm B to assess the need for more site characterization. It was agreed between ADEC and NAVFAC that hand augering will be sufficient for the additional well being placed and further steps will be assessed once results from monitoring are available. |
Meghan Dooley |
| 7/9/2010 |
Site Visit |
ADEC visited the site to determine the need for additional characterization. ADEC and NAVFAC agreed that additional characterization is required and will be implemented by placement of a hand auger well. The need for further action will be determined when the results from monitoring are received. |
Meghan Dooley |
| 10/12/2010 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 73207 Tank farm. |
Meghan Dooley |
| 2/14/2011 |
Document, Report, or Work plan Review - other |
The draft Site Characterization Report was received on December 30, 2010 and ADEC sent comments on February 14, 2011. Soil samples were taken at 7 locations to further characterize the lateral extent of contamination. It determined that contamination concentration has decreased in the area previously delineated as impacted soil. No recommendations were offered for the site. |
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 |
| 5/6/2011 |
Document, Report, or Work plan Review - other |
The final Engineering Evaluation/Cost Estimate was received. The EE/CA evaluated 8 alternatives to address the soil and groundwater contamination at the site. A decision between the Navy and DEC in July, 2010, however determined that no additional action at the site is warranted. Should a removal action be necessary in the future the results of this EE/CA will be considered. |
Meghan Dooley |
| 5/10/2011 |
Site Characterization Report Approved |
The Final Site Characterization Report was received. The report recommends continuing Monitored natural Attenuation at the site since GRO remains above cleanup levels in the groundwater. It also recommends continuing surface water and sediment sampling in Sweeper Creek. |
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 that annual monitoring be continued as prescribed for site SWMU 61. |
Meghan Dooley |
| 7/11/2011 |
Document, Report, or Work plan Review - other |
The Final Annual Groundwater MOnitoring Report was received. The report recommends collecting surface water samples and sediment samples annually at locations NL-D-04 and NL-04, and analyze for DRo, GRO, TAH, TAqH in surface water and DRO, GRO, BTEX in sediments. This remedy for this site is currently under evaluation to determine if there are more effective means of remediation. |
Meghan Dooley |
| 10/12/2012 |
Document, Report, or Work plan Review - other |
Received Final 2011 Annual Groundwater Monitoring Report. Since GRO, BTEX, TAH and TAqH concentrations in groundwater remain above their endpoint criteria groundwater monitoring will continue as prescribed. |
Guy Warren |
| 4/5/2013 |
Document, Report, or Work plan Review - other |
ADEC sent comments on the draft 2012 Annual Groundwater Monitoring Report. ADEC concurs with the recommendation to reduce monitoring frequency to odd years at this site. |
Meghan Dooley |
| 6/4/2013 |
Institutional Control Periodic Reporting |
The Final 2012 Institutional Control Site Inspection Report was received. There were no observed changes to land use and no indications of groundwater use or excavation activities. Signs were present. ICs appear to be functioning as intended. |
Meghan Dooley |
| 9/8/2014 |
Document, Report, or Work plan Review - other |
Received, Final 2013 Annual Groundwater and Landfill Monitoring Report for Adak Alaska. DRO, GRO, TAH and TAqH concentrations in groundwater remain above endpoint criteria. Surface water remains below endpoint criteria. GRO and Benzene are exhibiting decreasing trends. Monitoring will continue as prescribed. This site will continue to be monitored to ensure petroleum does not enter surface water. |
Guy Warren |
| 9/10/2014 |
Institutional Control Periodic Reporting |
The Final 2013 Institutional Control Site Inspection Report was received. There were no observed changes to land use and no indications of groundwater use or excavation activities. Signs were present. ICs appear to be functioning as intended. IC inspection frequency has been reduced to every odd year. |
Guy Warren |
| 6/10/2015 |
Update or Other Action |
Received Final Annual Groundwater and Landfill Monitoring Report, 2014 Long Term Monitoring at OUA of the Former Adak Naval Complex. Surface water and sediment sampling at NL-04 will be discontinued, adjacent surface water protection well has decreasing concentration trend and results from NL-04 have not exceeded end point since sampling began in 2011. Shoreline inspections at this location will continue. All other monitoring will continue biennially. |
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.
It is recommended that groundwater monitoring at this site, coupled with shoreline inspection for visible evidence of contamination, continue biennially as prescribed, to allow time for the remedy of MNA to be effective. The Navy is also considering conducting a remedy evaluation to address impacted groundwater adjacent to North Sweeper Creek. |
Darren Mulkey |
| 7/11/2019 |
Update or Other Action |
Site location was updated on this date. Coordinates for this site are used to determine the presence and position of the site on BLM’s ANCSA Conveyed Land web map. |
Rebekah Reams |
| 8/18/2022 |
Site Visit |
CS Staff conducted a site visit on Adak Island from August 10-13, 2022. |
Jamie McKellar |
| 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 |
