Site Report: Adak GCI Compound UST GCI-1

Site Name:	Adak GCI Compound UST GCI-1
Address:	OU A, Building 42352, Main Road, Adak, AK 99546
File Number:	2501.38.003.09
Hazard ID:	2408
Status:	Active
Staff:	Jamie McKellar, 9074515175 jamie.mckellar@alaska.gov
Latitude:	51.869197
Longitude:	-176.642648
Horizontal Datum:	WGS84

We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

Petroleum related chemicals – DRO, GRO, benzene. The GCI compound is the site of a 6,000 gallon UST that was removed in 1995. The tank’s use is unknown but is believed to be associated with a dispenser island located 40 feet to the south that belonged to the former motor pool located at this site. The current site houses a telecommunication satellite dish and associated building. The tank and island were removed in 1995, during which time 220 cubic yards of earth and approximately 4,800 gallons of water and petroleum residue were removed from the site. Free product recovery began in 1996 and was concluded in 1997. Free product has not been observed at the site since 1997. Free product recovery was selected as an interim remedy in the OU A ROD. The site was removed from the OU A ROD by the OU A ROD Amendment for regulation under 18 AAC 75. The site is located in the downtown groundwater restriction and dig notification areas. The property was transferred to the Aleut Corporation in March of 2004 as part of a three way land trade between the Navy, USFWS, and The Aleut Corporation. The Proposed Plan for the site was completed in September of 2004, in which monitored natural attenuation and institutional controls was selected as the final remedy. Decision document signed for this site on May 20, 2005. Monitored natural attenuation selected as final remedy. The 2005 monitoring data showed free product in well 04-202, an increase in DRO concentrations in 04-701, and relatively static concentrations in the other two wells (04-210 and 04-100). 04-210 and 04-100 concentrations remain above clean-up levels.

Action Information

Action Date	Action	Description	DEC Staff
5/1/1998	Proposed Plan	Site to be included in OU A ROD.	Christina Goff
9/1/1999	Update or Other Action	Site included in OU-A ROD and requires further evaluation due to presence of free product impacting groundwater. Free product recovery required.	Kevin Oates
4/15/2000	Record of Decision	The Record of Decision for this site was signed this date.	Elim Yoon
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.	Elim Yoon
3/1/2003	Update or Other Action	2001 Annual Groundwater Monitoring Report received. Navy recommends continuing monitoring as prescribed.	Meghan Dooley
10/10/2003	Record of Decision	Site Removed from the OU A ROD by OU A ROD Amendment; will be regulated under 18 AAC 75. Free product recovery interim remedy and institutional controls carried over with ROD.	Sami Goldman
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
9/1/2004	Update or Other Action	Site is currently in draft proposed plan stage for long term remedy.	Jason Weigle
9/7/2004	Update or Other Action	The 2003 Annual Groundwater Monitoring Report was received on this date. The Navy recommends continuing current monitoring schedule.	Meghan Dooley
9/15/2004	Risk Assessment Report Approved	Risk Assessment approved as part of Focused Feasibility Study for Free-Product Sites Below Health Goals.	Jason Weigle
9/15/2004	Site Characterization Report Approved	Site characterization report approved as part of Focused Feasibility Study for Free-Product Sites Below Health Goals.	Jason Weigle
9/15/2004	Update or Other Action	Focused Feasibility Study Approved for this site.	Jason Weigle
12/10/2004	Cleanup Level(s) Approved	Table C groundwater clean-up levels selected for remediation.	Jason Weigle
12/10/2004	Proposed Plan	Long-term remedy proposed plan approved on this date.	Jason Weigle
1/24/2005	Update or Other Action	Received copy of the Draft Decision Document for Petroleum Sites with No Unacceptable Risk for review.	Jason Weigle
2/8/2005	Update or Other Action	Risk assessments were used to justify remedial endpoints for active remediation, not final clean-up endpoints.	Jason Weigle
2/8/2005	Update or Other Action	Monitored natural attenuation selected in proposed plan.	Jason Weigle
2/8/2005	Update or Other Action	Interim conveyance document contains an equitable servitude that restricts residential land use as well as 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
2/17/2005	Update or Other Action	Completed review of the Draft Decision Document for Petroleum Sites with No Unacceptable Risk.	Jason Weigle
2/24/2005	Site Added to Database	DRO, GRO.	Sarah Cunningham
2/24/2005	GIS Position Updated	Latitude and Longitude was derived using 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
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
5/20/2005	Record of Decision	Decision document signed on this date.	Jason Weigle
5/20/2005	Long Term Monitoring Established	Monitored natural attenuation selected as long-term remedy in Decision Document.	Jason Weigle
5/23/2005	Update or Other Action	The 2004 Annual Groundwater Monitoring Report was received on this date. The Navy recommends maintaining the current monitoring schedule. If concentrations of GRO or BTEX are found above clean up levels for groundwater used as a drinking water source, the Navy will install at least one more monitoring well between well 04-701 and the East Canal of the airport ditch system.	Meghan Dooley
5/23/2005	Conditional Closure Approved	No additional remedial action beyond long-term MNA is expected at this site.	Jason Weigle
1/19/2006	Update or Other Action	File number issued 2501.38.003.09.	Aggie Blandford
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
4/7/2006	Update or Other Action	Comments on Groundwater Monitoring Report submitted to the Navy. GRO concentrations remain elevated throughout the site. Free product was discovered in well 04-202. The GRO plume appears to be expanding as concentrations in well 04-701 continue to increase. No statistical trends can be discerned yet as there aren't enough data points for all wells at the site.	Jason Weigle
6/9/2006	Update or Other Action	The 2005 Annual Groundwater Monitoring Report was received. The Navy recommends adding monitoring at well 04-204 to assess the presence or absence of an upgradient source.	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
4/26/2007	Exposure Tracking Model Ranking	Intitial Ranking Complete for Source Area: 73385 (Autogenerated Action)
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 BTEX sampling at the GCI compound well 04-701 resume on a biennial basis in 2008.	Meghan Dooley
8/14/2008	Update or Other Action	The 2007 Annual Groundwater Monitoring Report was received on this date. The Navy recommends adding well 04-213 for annual GRO sampling and reducing monitoring for GRO and benzene at well 04-701 to every even year.	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. ADEC concurs with the recommended changes to the monitoring program however if monitoring data for well 04-701 continue to exhibit an increasing trend ADEC will request that annual monitoring of this well resume. ADEC concurs that no chances to the monitoring program are required.	Meghan Dooley
8/21/2009	Update or Other Action	The 2008 Annual Groundwater Monitoring Report was received on this date. The Navy recommends discontinuing TEX monitoring at 6 wells and DRO monitoring at 1 well.	Meghan Dooley
3/12/2010	Update or Other Action	The draft 2009 Annual Groundwater Monitoring Report was received on this date. The Navy recommends discontinuing benzene monitoring in wells 04-2004 and 04-210 and terminating monthly free product recovery activities.	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 recommendation to discontinue monitoring for Benzene at 04-204 but to reduce monitoring to every other year for well 04-210, ADEC concurs with the cessation of Free Product Recovery at the site, recommends adding DRO analysis to well 04-204 (in 2010 only), and if well 04-210 continues to show an increasing trend in 2010 then it will be necessary to resume annual sampling.	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 monitoring as prescribed at the GCI Compound and adding analysis of DRO at well 04-204.	Meghan Dooley
7/11/2011	Document, Report, or Work plan Review - other	The Final 2010 Annual Groundwater Monitoring Report was received. The report recommends one more year of monitoring for DRO at wells 04-204 and MRP-MW9, discontinuing analysis of benzene at wells 04-100, 04-202, and 04-701. Additionally, the report recommends discontinuing monitoring at well 04-207 and decomissioning the well.	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. Monitoring recomendations include adding DRO analysis to several site wells to determine the source of free product observed at one site well. Report also recomended discontinuation of monitoring at up-gradient well MRP-MW9.	Guy Warren
10/16/2012	Document, Report, or Work plan Review - other	Submit acceptance letter to Navy regarding Final 2011 Annual Ground Water Monitoring. Monitoring changes recomended in Draft Report have been included.	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 sampling to every other year (odd years) and to discontinue DRO sampling.	Meghan Dooley
6/4/2013	Institutional Control Periodic Reporting	The 2012 Final Institutional Controls Site Inspection Report was received. There were no indications of groundwater use, changes in land use, or unauthorized excavations. Excavation restriction signs were clearly visible. 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. While monitoring results are largely unchanged for the GCI Compound the Navy is changing how contaminants in the area are reported. There appears to be one large contiguous area of mixed DRO and GRO contaminated ground water that is included in three different sites (GCI Compound, Area 303, and SWMU 62). GCI compound is located totally within Area 303. This and future groundwater monitoring reports will evaluate monitoring data from all three sites in one location in the report to address the LTM requirements for this plume.	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 4 or 6 years (to coincide with the 5-year review).	Guy Warren
3/16/2015	Update or Other Action	Received Final 2014 Institutional Controls Site Inspection Report, OUA and OUB of the former Adak Naval Complex. No recommendations for site in report, as all IC’s appear to be functioning as intended. Next IC inspection is scheduled to occur in 2019 in coordination with the 5-year review.	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. The report recommends several adjustments to the monitoring program for the GCI/AREA 303/SWMU62 plume. These include elimination of monitoring at 7 redundant locations and adding two additional wells at the edge of the contaminant plume.	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
12/10/2019	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
3/6/2020	Institutional Control Periodic Reporting	The U.S. Navy (Navy) is the lead agency and responsible party for monitoring and ensuring the effectiveness of the institutional controls (ICs) selected in the Operable Unit (OU) A Record of Decision (ROD) and the OU B-1 ROD at the Former Naval Complex, Adak, Alaska. The Navy is required to conduct monitoring for as long as site conditions pose an unacceptable risk for unlimited use and unrestricted exposure to the community and the environment. The ICs will remain in place until those conditions are met. If any of the ICs are ineffective or if significant failures pose harmful risks to the community and the environment, the Navy is responsible for additional remedial actions. Repairs to ICs identified by periodic inspections will be conducted by the Navy approximately every 3 to 5 years, if needed. If severe or unusual failures of ICs are observed, the Navy will conduct additional emergency repairs at that time. Because it has been shown that ICs have generally remained effective since 2005, reductions to the monitoring program began in 2013. Currently, 28 sites are inspected biennially (including Parcel 4) with 39 sites (including 12 remote OU B-1 sites) inspected every 5 years.	Darren Mulkey
4/16/2020	Document, Report, or Work plan Review - other	Groundwater, surface water, and sediment samples were collected from 40 monitoring locations at 4 sites during the 2019 monitoring event. In addition, product thickness and depth to water measurements were performed at 50 locations from these sites. Monitoring was conducted to satisfy OU A Record of Decision (Navy, ADEC, and EPA 2000) remedy requirements as well as 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 2019a). 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 last conducted in 2018.	Darren Mulkey
8/18/2022	Site Visit	CS Staff conducted a site visit on Adak Island from August 10-13, 2022.	Jamie McKellar

Action Date

Action

Description

DEC Staff

5/1/1998

Proposed Plan

Site to be included in OU A ROD.

Christina Goff

9/1/1999

Update or Other Action

Site included in OU-A ROD and requires further evaluation due to presence of free product impacting groundwater. Free product recovery required.

Kevin Oates

4/15/2000

Record of Decision

The Record of Decision for this site was signed this date.

Elim Yoon

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.

Elim Yoon

3/1/2003

Update or Other Action

2001 Annual Groundwater Monitoring Report received. Navy recommends continuing monitoring as prescribed.

Meghan Dooley

10/10/2003

Record of Decision

Site Removed from the OU A ROD by OU A ROD Amendment; will be regulated under 18 AAC 75. Free product recovery interim remedy and institutional controls carried over with ROD.

Sami Goldman

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

9/1/2004

Update or Other Action

Site is currently in draft proposed plan stage for long term remedy.

Jason Weigle

9/7/2004

Update or Other Action

The 2003 Annual Groundwater Monitoring Report was received on this date. The Navy recommends continuing current monitoring schedule.

Meghan Dooley

9/15/2004

Risk Assessment Report Approved

Risk Assessment approved as part of Focused Feasibility Study for Free-Product Sites Below Health Goals.

Jason Weigle

9/15/2004

Site Characterization Report Approved

Site characterization report approved as part of Focused Feasibility Study for Free-Product Sites Below Health Goals.

Jason Weigle

9/15/2004

Update or Other Action

Focused Feasibility Study Approved for this site.

Jason Weigle

12/10/2004

Cleanup Level(s) Approved

Table C groundwater clean-up levels selected for remediation.

Jason Weigle

12/10/2004

Proposed Plan

Long-term remedy proposed plan approved on this date.

Jason Weigle

1/24/2005

Update or Other Action

Received copy of the Draft Decision Document for Petroleum Sites with No Unacceptable Risk for review.

Jason Weigle

2/8/2005

Update or Other Action

Risk assessments were used to justify remedial endpoints for active remediation, not final clean-up endpoints.

Jason Weigle

2/8/2005

Update or Other Action

Monitored natural attenuation selected in proposed plan.

Jason Weigle

2/8/2005

Update or Other Action

Interim conveyance document contains an equitable servitude that restricts residential land use as well as 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

2/17/2005

Update or Other Action

Completed review of the Draft Decision Document for Petroleum Sites with No Unacceptable Risk.

Jason Weigle

2/24/2005

Site Added to Database

DRO, GRO.

Sarah Cunningham

2/24/2005

GIS Position Updated

Latitude and Longitude was derived using 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

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

5/20/2005

Record of Decision

Decision document signed on this date.

Jason Weigle

5/20/2005

Long Term Monitoring Established

Monitored natural attenuation selected as long-term remedy in Decision Document.

Jason Weigle

5/23/2005

Update or Other Action

The 2004 Annual Groundwater Monitoring Report was received on this date. The Navy recommends maintaining the current monitoring schedule. If concentrations of GRO or BTEX are found above clean up levels for groundwater used as a drinking water source, the Navy will install at least one more monitoring well between well 04-701 and the East Canal of the airport ditch system.

Meghan Dooley

5/23/2005

Conditional Closure Approved

No additional remedial action beyond long-term MNA is expected at this site.

Jason Weigle

1/19/2006

Update or Other Action

File number issued 2501.38.003.09.

Aggie Blandford

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

4/7/2006

Update or Other Action

Comments on Groundwater Monitoring Report submitted to the Navy. GRO concentrations remain elevated throughout the site. Free product was discovered in well 04-202. The GRO plume appears to be expanding as concentrations in well 04-701 continue to increase. No statistical trends can be discerned yet as there aren't enough data points for all wells at the site.

Jason Weigle

6/9/2006

Update or Other Action

The 2005 Annual Groundwater Monitoring Report was received. The Navy recommends adding monitoring at well 04-204 to assess the presence or absence of an upgradient source.

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

4/26/2007

Exposure Tracking Model Ranking

Intitial Ranking Complete for Source Area: 73385 (Autogenerated Action)

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 BTEX sampling at the GCI compound well 04-701 resume on a biennial basis in 2008.

Meghan Dooley

8/14/2008

Update or Other Action

The 2007 Annual Groundwater Monitoring Report was received on this date. The Navy recommends adding well 04-213 for annual GRO sampling and reducing monitoring for GRO and benzene at well 04-701 to every even year.

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. ADEC concurs with the recommended changes to the monitoring program however if monitoring data for well 04-701 continue to exhibit an increasing trend ADEC will request that annual monitoring of this well resume. ADEC concurs that no chances to the monitoring program are required.

Meghan Dooley

8/21/2009

Update or Other Action

The 2008 Annual Groundwater Monitoring Report was received on this date. The Navy recommends discontinuing TEX monitoring at 6 wells and DRO monitoring at 1 well.

Meghan Dooley

3/12/2010

Update or Other Action

The draft 2009 Annual Groundwater Monitoring Report was received on this date. The Navy recommends discontinuing benzene monitoring in wells 04-2004 and 04-210 and terminating monthly free product recovery activities.

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 recommendation to discontinue monitoring for Benzene at 04-204 but to reduce monitoring to every other year for well 04-210, ADEC concurs with the cessation of Free Product Recovery at the site, recommends adding DRO analysis to well 04-204 (in 2010 only), and if well 04-210 continues to show an increasing trend in 2010 then it will be necessary to resume annual sampling.

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 monitoring as prescribed at the GCI Compound and adding analysis of DRO at well 04-204.

Meghan Dooley

7/11/2011

Document, Report, or Work plan Review - other

The Final 2010 Annual Groundwater Monitoring Report was received. The report recommends one more year of monitoring for DRO at wells 04-204 and MRP-MW9, discontinuing analysis of benzene at wells 04-100, 04-202, and 04-701. Additionally, the report recommends discontinuing monitoring at well 04-207 and decomissioning the well.

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. Monitoring recomendations include adding DRO analysis to several site wells to determine the source of free product observed at one site well. Report also recomended discontinuation of monitoring at up-gradient well MRP-MW9.

Guy Warren

10/16/2012

Document, Report, or Work plan Review - other

Submit acceptance letter to Navy regarding Final 2011 Annual Ground Water Monitoring. Monitoring changes recomended in Draft Report have been included.

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 sampling to every other year (odd years) and to discontinue DRO sampling.

Meghan Dooley

6/4/2013

Institutional Control Periodic Reporting

The 2012 Final Institutional Controls Site Inspection Report was received. There were no indications of groundwater use, changes in land use, or unauthorized excavations. Excavation restriction signs were clearly visible. 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. While monitoring results are largely unchanged for the GCI Compound the Navy is changing how contaminants in the area are reported. There appears to be one large contiguous area of mixed DRO and GRO contaminated ground water that is included in three different sites (GCI Compound, Area 303, and SWMU 62). GCI compound is located totally within Area 303. This and future groundwater monitoring reports will evaluate monitoring data from all three sites in one location in the report to address the LTM requirements for this plume.

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 4 or 6 years (to coincide with the 5-year review).

Guy Warren

3/16/2015

Update or Other Action

Received Final 2014 Institutional Controls Site Inspection Report, OUA and OUB of the former Adak Naval Complex. No recommendations for site in report, as all IC’s appear to be functioning as intended. Next IC inspection is scheduled to occur in 2019 in coordination with the 5-year review.

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. The report recommends several adjustments to the monitoring program for the GCI/AREA 303/SWMU62 plume. These include elimination of monitoring at 7 redundant locations and adding two additional wells at the edge of the contaminant plume.

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

12/10/2019

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

3/6/2020

Institutional Control Periodic Reporting

The U.S. Navy (Navy) is the lead agency and responsible party for monitoring and ensuring the effectiveness of the institutional controls (ICs) selected in the Operable Unit (OU) A Record of Decision (ROD) and the OU B-1 ROD at the Former Naval Complex, Adak, Alaska. The Navy is required to conduct monitoring for as long as site conditions pose an unacceptable risk for unlimited use and unrestricted exposure to the community and the environment. The ICs will remain in place until those conditions are met. If any of the ICs are ineffective or if significant failures pose harmful risks to the community and the environment, the Navy is responsible for additional remedial actions. Repairs to ICs identified by periodic inspections will be conducted by the Navy approximately every 3 to 5 years, if needed. If severe or unusual failures of ICs are observed, the Navy will conduct additional emergency repairs at that time. Because it has been shown that ICs have generally remained effective since 2005, reductions to the monitoring program began in 2013. Currently, 28 sites are inspected biennially (including Parcel 4) with 39 sites (including 12 remote OU B-1 sites) inspected every 5 years.

Darren Mulkey

4/16/2020

Document, Report, or Work plan Review - other

Groundwater, surface water, and sediment samples were collected from 40 monitoring locations at 4 sites during the 2019 monitoring event. In addition, product thickness and depth to water measurements were performed at 50 locations from these sites. Monitoring was conducted to satisfy OU A Record of Decision (Navy, ADEC, and EPA 2000) remedy requirements as well as 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 2019a). 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 last conducted in 2018.

Darren Mulkey

8/18/2022

Site Visit

CS Staff conducted a site visit on Adak Island from August 10-13, 2022.

Jamie McKellar

Contaminant Information

Name	Level Description	Media
DRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
DRO	> Table C	Groundwater
GRO	> Table C	Groundwater

Name

Level Description

Media

Comments

DRO

Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation

Soil

DRO

> Table C

Groundwater

GRO

> Table C

Groundwater

Control Type

Type	Details
Equitable Servitude	The Equitable Servitude to the Interim Conveyance Document restricts groundwater use and residential land use.
Institutional Control Management Plan	The Institutional Control Management Plan, a supbart of the base-wide Comprehensive Monitoring Plan, requires the completion of a dig notification in the Downtown Area and at several outback locations.

Type

Details

Equitable Servitude

The Equitable Servitude to the Interim Conveyance Document restricts groundwater use and residential land use.

Institutional Control Management Plan

The Institutional Control Management Plan, a supbart of the base-wide Comprehensive Monitoring Plan, requires the completion of a dig notification in the Downtown Area and at several outback locations.

Requirements

Description	Details
Excavation / Soil Movement Restrictions	All excavation within the 'downtown area' of Adak, as defined in the Equitable Servitude to the Interim Conveyance Document, must be submitted to the City of Adak and the Navy for review three days prior to excavation. Annual report of excavation notifications included in the IC Inspection Report.
Restricted to Industrial / Commercial Land Use	Equitable servitude restricts land uses to non-residential uses. Site is inspected and reported yearly to ensure there are no residential land uses taking place.
Groundwater Use Restrictions	The Equitable Servitude restricts groundwater use in the Downtown Area. Site is inspected and reported yearly to ensure groundwater is not being used in the Downtown Area.
Groundwater Monitoring	The Comprehensive Monitoring Plan Rev. 2 requires annual groundwater monitoring for this site. Groundwater is sampled yearly for various parameters.

Description

Details

Excavation / Soil Movement Restrictions

All excavation within the 'downtown area' of Adak, as defined in the Equitable Servitude to the Interim Conveyance Document, must be submitted to the City of Adak and the Navy for review three days prior to excavation. Annual report of excavation notifications included in the IC Inspection Report.

Restricted to Industrial / Commercial Land Use

Equitable servitude restricts land uses to non-residential uses. Site is inspected and reported yearly to ensure there are no residential land uses taking place.

Groundwater Use Restrictions

The Equitable Servitude restricts groundwater use in the Downtown Area. Site is inspected and reported yearly to ensure groundwater is not being used in the Downtown Area.

Groundwater Monitoring

The Comprehensive Monitoring Plan Rev. 2 requires annual groundwater monitoring for this site. Groundwater is sampled yearly for various parameters.

There are no documents for this site report.

Hazard ID	Site Name	File Number
27909	Adak Island OU A, B1, & B2	2501.38.007.01

Hazard ID

Site Name

File Number

27909

Adak Island OU A, B1, & B2

2501.38.007.01

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.

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Alaska Department of Environmental Conservation

Site Report: Adak GCI Compound UST GCI-1

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Missing Location Data

State of Alaska Department of Environmental Conservation