Site Report: Yakutat AFB Air Corps Tank Farm

Site Name:	Yakutat AFB Air Corps Tank Farm
Address:	~1 Mile SSE of Yakutat, ~1/4 Mi. SW of Airport Rd, Yakutat, AK 99689
File Number:	1530.38.011
Hazard ID:	3715
Status:	Cleanup Complete
Staff:	No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude:	59.534050
Longitude:	-139.716139
Horizontal Datum:

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

The former Air Corps Operations Reserve Tank Farm is located to the southwest of Engineer's Road (a.k.a. Airport Road), approximately 2 miles from the airport. Fifteen above ground fuel storage tanks and the associated pipeline system were built as part of the Air Corps Tactical Gas System during WWII and held nearly 750,000 gallons of fuel. Yakutat Army Base War Department maps indicate that the fuel tanks were supported by concrete saddles and were connected by service lines to pipeline system laterals. The laterals were connected by a drainage lateral that drained toward a pumphouse located near the center of the tank farm. The pumphouse was at the low point of the tank farm and drained all lateral lines. The reserve tank farm was connected by a main line to the Army Dock where gasoline deliveries were loaded directly from tankers. The piping system was buried in trenches, generally 2-5 feet bgs. A booster pump and associated oil-water separator on the main pipeline moved fuel to truck fill stands located along Engineer's Road and on the Air Base. Concrete vaults were constructed at lateral line junctions and lateral line-main line junctions. The 15 above ground storage tanks were removed shortly before the tank farm site was relinquished to the State of Alaska in 1948. The piping system was removed during 2008. The site was investigated as five concerns identified as L1-L5. Contaminants found above Method II levels were GRO, benzene, toluene, ethylbenzene in soil. In groundwater arsenic, barium, chromium, lead, mercury, GRO, benzene and DRO were detected above Table C levels. A removal action was completed at the Air Corps Tank Farm in 2016. Over 5,000 tons of petroleum contaminated soil was excavated and barged offsite for disposal. Contamination associated with ACOR Tank Farm was removed below applicable cleanup levels, and the conclusions support a cleanup complete determination for all areas of concern within the site.

Action Information

Action Date	Action	Description	DEC Staff
4/28/2003	Site Added to Database	Fuel contamination.	Debra Caillouet
4/28/2003	Update or Other Action	The 2001 RI report indicates most tanks were sampled near the inputs with no sampling downgradient with the exception of Tank 8 where there also was a drum/debris area. In the drum/debris area GRO and BTEX was found above cleanup levels. At the pipeline junctions investigated no contaminants above cleanup levels were detected. Note: the main fuel pipeline boosted pump, oil-water separator, air release tank and the branch line to the truck fill stand were not investigated. Several PAHs were above Method II levels at tank foundations and the pipeline at the vault for the tank farm pumphouse was found to contain fuel and water. A spill incident was reported for this. The pipeline from the dock to the tank farm and from the tank farm to the airport were not investigated.	Debra Caillouet
10/14/2003	Interim Removal Action Approved	Staff approved the work plan for cleaning, pigging and removing the pipeline(s) and vaults at the tank farm.	Debra Caillouet
4/5/2004	Update or Other Action	A draft feasibility study was reviewed. There is insufficient site characterization data available to select appropriate remedies or to effectively evaluate them against CERCLA criteria. Based on the information provided, the Feasibility Study is premature. Work should occur to identify the data gaps and resolve them before any additional actions are taken.	Debra Caillouet
8/19/2004	Meeting or Teleconference Held	Staff attended the RAB meeting in Yakutat	Debra Caillouet
8/26/2004	Update or Other Action	File number issued 1530.38.011.06	Aggie Blandford
11/23/2004	Update or Other Action	Response to comments on the draft feasibility study were received and reviewed. While the responses will add clarification to the document, DEC believes there is insufficient site characterization data. The Feasibility Study is premature. Work should occur to identify the data gaps and resolve them before any additional actions are taken.	Debra Caillouet
12/14/2004	Interim Removal Action Approved	The final report for the Interim Removal Action was approved. Approximately 6,000 feet of pipeline was cleaned and closed in place, another 1,600 feet of pipeline was removed and shipped off site for recycling. During the cleaning, 4,900 gallons of fuel was removed from the pipeline and shipped off site for reuse. 2,800 gallons of POL impacted water was treated and discharged on site. During the remedial action five areas were identified by high PID readings as containing potentially contaminated soil. Analytical testing was not in the scope of work. The report recommends that these five areas be sampled for additional characterization. The scope of work did not completely address the main pipeline proceeding northwest out of the area. This section is recommended for additional investigation.	Debra Caillouet
1/13/2005	Meeting or Teleconference Held	Staff attended the RAB meeting in Yakutat	Debra Caillouet
7/7/2005	Update or Other Action	Staff sent a comment letter to the Corps regarding the Draft Rapid Optical Screening Tool (ROST) Laser-Induced Fluorescence (LIF) Focused Remedial Investigation, Former Yakutat Air Force Base,	Debra Caillouet
7/19/2006	Update or Other Action	Staff reviewed the Draft Work Plan, 2006 Remedial Investigation, Former Yakutat Air Force Base. Monitoring wells at AOC L will be redeveloped and sampled for DRO and metals.	Debra Caillouet
11/9/2006	Site Characterization Report Approved	The final report for the 2005 ROST/LIF investigation was approved.	Debra Caillouet
4/3/2007	Exposure Tracking Model Ranking		Debra Caillouet
4/4/2007	Site Characterization Report Approved	The 2006 Remedial Investigation Report was approved. Development and sampling of wells at L1 and L3 showed no metals above cleanup level.	Debra Caillouet
1/16/2008	Update or Other Action	ADEC staff attended a Restoration Advisory Board meeting in Yakutat to discuss the status of various contaminated sites associated with the Yakutat AFB.	Jonathan Schick
1/16/2008	Update or Other Action	ADEC staff attended a Restoration Advisory Board meeting in Yakutat to discuss the status of various contaminated sites associated with the Yakutat AFB.	Jonathan Schick
1/17/2008	Site Visit	ADEC Staff participated in a site visit to various sites around the Yakutat area. Snow inhibited access to many of the sitess but the purpose of the trip was to get an understanding of the distribution of sites and to attend a Restoration Advisory Board Meeting.	Jonathan Schick
8/13/2008	Meeting or Teleconference Held	ADEC staff attended a Restoration Advisory Board meeting in the community of Yakutat. Various topics were discussed concerning the status of the on-going environmental restoration work that is going on in the area. One topics that was discussed was the removal/abandonment of the Avgas pipeline from Concern L.	Jonathan Schick
8/14/2008	Site Visit	ADEC Staff participated in a site visit to various sites in and around the Yakutat AFB area. We performed quality assurance on the pipeline removal work in Concern L. The purpose of the QA work was to confirm that there were no undetected releases from the pipeline that was largely abandoned in place. The other purpose of the site visit was to attend a Restoration Advisory Board Meeting.	Jonathan Schick
9/2/2008	Update or Other Action	ADEC staff provided comments on the Draft version of the Pipeline Closure Report for Concern L Avgas pipeline. The Pipeline was removed between the Truck Fill Stand No. 4 and Valve Pit A1 without incident and no contaminated soil was encountered during the pigging or removal processes. Also comments included a request for clarification on how the waste from the vacuum truck was handled and to provide a data quality checklist for each data set from the laboratory.	Jonathan Schick
9/2/2008	Update or Other Action	ADEC staff provided comments on the Draft version of the Pipeline Closure Report for Concern L Avgas pipeline. The Pipeline was removed between the Truck Fill Stand No. 4 and Valve Pit A1 without incident and no contaminated soil was encountered during the pigging or removal processes. Also comments included a request for clarification on how the waste from the vacuum truck was handled and to provide a data quality checklist for each data set from the laboratory.	Jonathan Schick
9/25/2008	Document, Report, or Work plan Review - other	ADEC staff received a copy of the Final Pipeline Closure Report for the Former Yakutat Air Force Base Air Corps Operations Reserve Tank Farm Mainline Removal, Drain, or Pig from the 2008 Field Season. The Report is dated September 2008.	Jonathan Schick
9/30/2009	Update or Other Action	ADEC staff signed a CON/HTRW project closeout report for the Formerly Used Defense Sites associated with the Yakutat Air Base. The State of Alaska, through the Department of Environmental Conservation concurs with this USACE project closure. The decision may be reviewed or modified in the future if information becomes available that indicates the presence oif military CON/HTRW that may cause unacceptable risk to human health or the environment. The remediation of these sites will continue as necessary, this report only states that no containerized wastes are known to be present at the subject sites.	Jonathan Schick
3/17/2010	Update or Other Action	ADEC Staff issued a letter to the USACE approving the finalization of the Feasibility Study Report as all of the State's comments have been responded to and incorporated in the document.	Jonathan Schick
10/22/2010	CERCLA FS	Contaminated Sites Staff submitted a letter to the US Army Corps of Engineers approving the Final Version of the Feasibility Study Report. Two separate drum dumps at the tank farm were investigated as AOC L1. Contamination was not found above applicable cleanup levels at the north drum dump, and no further DoD action was recommended. GRO, benzene, and toluene in surface and subsurface soil, and GRO and benzene in groundwater are considered COCs at the drum dump northwest of Tank 8 (South Drum Dump) at AOC L1. The pipeline system junctions investigated as AOC L2 consisted of seven concrete junction vaults within the tank farm, a fuel dispensing hose associated with a tank truck fill stand, 2 lateral and 1 drain line breaks, and a booster pump, oil-water separator, and air release tank. Contamination was not found above applicable cleanup levels at AOC L2, and no further DoD action was recommended. The 15 AST foundations were investigated as AOC L3. Benzene in surface soil at Tank 14, benzo(a)pyrene in surface soil at Tank 1, Tank 3, Tank 7, Tank 8, and Tank 11, and benzo(a)anthracene in surface soil at Tank 8 are considered COCs at AOC L3. Contamination was not found above applicable cleanup levels at ASTs 2,4,5,6,9,10,12,13, and 15; no further DoD action was recommended for these sites. The Truck Fill Stand No. 4 was investigated as AOC L4; benzo(a)pyrene and DRO in surface soil are considered COCs at AOC L4. The Tank Farm Pump House was investigated as AOC L5. Contamination was not found above applicable cleanup levels and no further DoD action was recommended at AOC L5.	Jonathan Schick
10/22/2010	CERCLA FS	Contaminated Sites Staff submitted a letter to the US Army Corps of Engineers approving the Final Version of the Feasibility Study Report. Two separate drum dumps at the tank farm were investigated as AOC L1. Contamination was not found above applicable cleanup levels at the north drum dump, and no further DoD action was recommended. GRO, benzene, and toluene in surface and subsurface soil, and GRO and benzene in groundwater are considered COCs at the drum dump northwest of Tank 8 (South Drum Dump) at AOC L1. The pipeline system junctions investigated as AOC L2 consisted of seven concrete junction vaults within the tank farm, a fuel dispensing hose associated with a tank truck fill stand, 2 lateral and 1 drain line breaks, and a booster pump, oil-water separator, and air release tank. Contamination was not found above applicable cleanup levels at AOC L2, and no further DoD action was recommended. The 15 AST foundations were investigated as AOC L3. Benzene in surface soil at Tank 14, benzo(a)pyrene in surface soil at Tank 1, Tank 3, Tank 7, Tank 8, and Tank 11, and benzo(a)anthracene in surface soil at Tank 8 are considered COCs at AOC L3. Contamination was not found above applicable cleanup levels at ASTs 2,4,5,6,9,10,12,13, and 15; no further DoD action was recommended for these sites. The Truck Fill Stand No. 4 was investigated as AOC L4; benzo(a)pyrene and DRO in surface soil are considered COCs at AOC L4. The Tank Farm Pump House was investigated as AOC L5. Contamination was not found above applicable cleanup levels and no further DoD action was recommended at AOC L5.	Jonathan Schick
9/29/2014	Site Visit	The ADEC contaminated Sites staff participated in a Restoration Advisory Board (RAB) meeting, a tribal meeting, and site inspections in Yakutat with the Army Corps of Engineers to share information on the status of Formerly Used Defense Site investigation and cleanup activities around Yakutat.	Jessica Morris
2/17/2015	CERCLA Proposed Plan	The ADEC Contaminated Sites Program approved the February 2015 Proposed Plan for No Department of Defense Action Indicated (NDAI) for the Yakutat Air Base Formerly Used Defense Sites. The proposed plan included only the following areas of concern (AOCs) at this site: Air Corps Operations Reserve(ACOR) Tank Farm, North Drum Dump (AOC L1), ACOR Tank Farm Pipeline System Seven Junctions (AOC L2), ACOR Tanks 2, 4, 5, 6, 9, 10, 12, 13, 15 (AOC L3), and ACOR Tank Farm Pump house (AOC L5). For these AOCs, no additional remedial action, no additional review, no implementation of long term management or land use controls is planned by the Department of Defense. If new information becomes available indicating risk or concern of military-related contamination at these AOCs, further evaluation may be warranted.	Jessica Morris
9/28/2015	Update or Other Action	The ADEC Contaminated Sites Program approved the Decision Document and No Department of Defense Action Indicated Report for the Former Yakutat Air Base, Yakutat, Alaska. This document included site closure for L1 - ACOR Tank Farm - North Drum Dump, L2 - ACOR Tank Farm, Pipeline System - 7 Junctions, L3 - ACOR Tank No. 1302 (AST2), L3 - ACOR Tank No. 14 (AST 4), L3 - ACOR Tank No. 1315 (AST 5), L3 - ACOR Tank No. 1312 (AST 6), L3 - ACOR Tank No. 1309 (AST 9), L3 - ACOR Tank No. 1307 (AST 10), L3 - ACOR Tank No. 1311 (AST 12), L3 - ACOR Tank No. 1310 (AST 13), L3 - ACOR Tank No. 1304 (AST 15), and L5 - ACOR Tank Farm Pump House.	Jessica Morris
10/15/2015	Site Visit	The ADEC contaminated Sites staff participated in a Restoration Advisory Board (RAB) meeting and site inspections in Yakutat with the Army Corps of Engineers to share information on the status of Formerly Used Defense Site investigation and cleanup activities around Yakutat.	Jessica Morris
7/7/2016	Cleanup Plan Approved	The ADEC Contaminated Sites Program approved the CON/HTRW Removal Action Work Plan for the Yakutat Air Base FUDS, Yakutat Alaska. Soil removals are planned to occur at L1-South Drum Dump, L3 Tank Foundations for AST 1, AST3, AST7, AST8, AST11, and AST 14, and the L4- Truck Fill Stand No. 4.	Jessica Morris
10/11/2016	Site Visit	The ADEC contaminated Sites staff participated in a Restoration Advisory Board (RAB) meeting and site inspections in Yakutat with the Army Corps of Engineers to share information on the status of Formerly Used Defense Site investigation and cleanup activities around Yakutat.	Jessica Morris
6/2/2017	Update or Other Action	The ADEC Contaminated Sites Program submitted comments on the draft Removal Action Report for the Air Corps Tank Farm. Over 5,000 tons of petroleum contaminated soil was excavated and barged offsite for disposal. Contamination associated with ACOR Tank Farm was removed below applicable cleanup levels, and the conclusions support a cleanup complete determination for all areas of concern within the site.	Jessica Morris
10/4/2017	Update or Other Action	The ADEC Contaminated Sites Program sent a letter to the USACE documenting the State's non-concurrence with the Revised Property Survey Summary Sheet for DERP-FUDS Property No. F10AK0606, Inventory Project Report (INPR) for the Yakutat Air Base, Yakutat Alaska. ADEC does not have sufficient information to concur with the reduction of the overall Yakutat Air Base FUDS eligible projects, as described in the INPR. ADEC requested more information regarding the overall site reduction and a meeting with the USACE.	Jessica Morris
2/16/2018	CERCLA Removal Action Report	The ADEC Contaminated Sites Program accepted the Removal Action Report for the Air Corps Tank Farm as the final documentation for the removal action activities during the 2016 field season. Over 5,000 tons of petroleum contaminated soil was excavated and barged offsite for disposal. Contamination associated with ACOR Tank Farm was removed below applicable cleanup levels, and the conclusions support a cleanup complete determination for all areas of concern within the site.	Jessica Morris
7/30/2020	Update or Other Action	ADEC received a copy of the “Declaration of Project Closeout Decision for Yakutat Air Base Formerly Used Defense Site CON/HTRW Project F10AK0606-06 L Concern – Air Corps Operations Reserve (ACOR) Tank Farm Yakutat, Alaska” dated May 2020 on May 01, 2020. ADEC agrees that this project closure is consistent with state investigation and cleanup requirements listed in 18 AAC 75. This decision may be reviewed and modified in the future if information becomes available that indicates an unacceptable risk to human health or the environment associated with the project. ADEC will wait until the final signed closeout report is submitted before closing site.	Rachael Petraeus
11/9/2020	Cleanup Complete Determination Issued	On November 09, 2020 ADEC received the final “Declaration of Project Closeout Decision for Yakutat Air Base Formerly Used Defense Site CON/HTRW Project F10AK0606-06 L Concern – Air Corps Operations Reserve (ACOR) Tank Farm Yakutat, Alaska”. ADEC sent closure letter finalizing the site closure.	Rachael Petraeus

Action Date

Action

Description

DEC Staff

4/28/2003

Site Added to Database

Fuel contamination.

Debra Caillouet

4/28/2003

Update or Other Action

The 2001 RI report indicates most tanks were sampled near the inputs with no sampling downgradient with the exception of Tank 8 where there also was a drum/debris area. In the drum/debris area GRO and BTEX was found above cleanup levels. At the pipeline junctions investigated no contaminants above cleanup levels were detected. Note: the main fuel pipeline boosted pump, oil-water separator, air release tank and the branch line to the truck fill stand were not investigated. Several PAHs were above Method II levels at tank foundations and the pipeline at the vault for the tank farm pumphouse was found to contain fuel and water. A spill incident was reported for this. The pipeline from the dock to the tank farm and from the tank farm to the airport were not investigated.

Debra Caillouet

10/14/2003

Interim Removal Action Approved

Staff approved the work plan for cleaning, pigging and removing the pipeline(s) and vaults at the tank farm.

Debra Caillouet

4/5/2004

Update or Other Action

A draft feasibility study was reviewed. There is insufficient site characterization data available to select appropriate remedies or to effectively evaluate them against CERCLA criteria. Based on the information provided, the Feasibility Study is premature. Work should occur to identify the data gaps and resolve them before any additional actions are taken.

Debra Caillouet

8/19/2004

Meeting or Teleconference Held

Staff attended the RAB meeting in Yakutat

Debra Caillouet

8/26/2004

Update or Other Action

File number issued 1530.38.011.06

Aggie Blandford

11/23/2004

Update or Other Action

Response to comments on the draft feasibility study were received and reviewed. While the responses will add clarification to the document, DEC believes there is insufficient site characterization data. The Feasibility Study is premature. Work should occur to identify the data gaps and resolve them before any additional actions are taken.

Debra Caillouet

12/14/2004

Interim Removal Action Approved

The final report for the Interim Removal Action was approved. Approximately 6,000 feet of pipeline was cleaned and closed in place, another 1,600 feet of pipeline was removed and shipped off site for recycling. During the cleaning, 4,900 gallons of fuel was removed from the pipeline and shipped off site for reuse. 2,800 gallons of POL impacted water was treated and discharged on site. During the remedial action five areas were identified by high PID readings as containing potentially contaminated soil. Analytical testing was not in the scope of work. The report recommends that these five areas be sampled for additional characterization. The scope of work did not completely address the main pipeline proceeding northwest out of the area. This section is recommended for additional investigation.

Debra Caillouet

1/13/2005

Meeting or Teleconference Held

Staff attended the RAB meeting in Yakutat

Debra Caillouet

7/7/2005

Update or Other Action

Staff sent a comment letter to the Corps regarding the Draft Rapid Optical Screening Tool (ROST) Laser-Induced Fluorescence (LIF) Focused Remedial Investigation, Former Yakutat Air Force Base,

Debra Caillouet

7/19/2006

Update or Other Action

Staff reviewed the Draft Work Plan, 2006 Remedial Investigation, Former Yakutat Air Force Base. Monitoring wells at AOC L will be redeveloped and sampled for DRO and metals.

Debra Caillouet

11/9/2006

Site Characterization Report Approved

The final report for the 2005 ROST/LIF investigation was approved.

Debra Caillouet

4/3/2007

Exposure Tracking Model Ranking

Debra Caillouet

4/4/2007

Site Characterization Report Approved

The 2006 Remedial Investigation Report was approved. Development and sampling of wells at L1 and L3 showed no metals above cleanup level.

Debra Caillouet

1/16/2008

Update or Other Action

ADEC staff attended a Restoration Advisory Board meeting in Yakutat to discuss the status of various contaminated sites associated with the Yakutat AFB.

Jonathan Schick

1/16/2008

Update or Other Action

ADEC staff attended a Restoration Advisory Board meeting in Yakutat to discuss the status of various contaminated sites associated with the Yakutat AFB.

Jonathan Schick

1/17/2008

Site Visit

ADEC Staff participated in a site visit to various sites around the Yakutat area. Snow inhibited access to many of the sitess but the purpose of the trip was to get an understanding of the distribution of sites and to attend a Restoration Advisory Board Meeting.

Jonathan Schick

8/13/2008

Meeting or Teleconference Held

ADEC staff attended a Restoration Advisory Board meeting in the community of Yakutat. Various topics were discussed concerning the status of the on-going environmental restoration work that is going on in the area. One topics that was discussed was the removal/abandonment of the Avgas pipeline from Concern L.

Jonathan Schick

8/14/2008

Site Visit

ADEC Staff participated in a site visit to various sites in and around the Yakutat AFB area. We performed quality assurance on the pipeline removal work in Concern L. The purpose of the QA work was to confirm that there were no undetected releases from the pipeline that was largely abandoned in place. The other purpose of the site visit was to attend a Restoration Advisory Board Meeting.

Jonathan Schick

9/2/2008

Update or Other Action

ADEC staff provided comments on the Draft version of the Pipeline Closure Report for Concern L Avgas pipeline. The Pipeline was removed between the Truck Fill Stand No. 4 and Valve Pit A1 without incident and no contaminated soil was encountered during the pigging or removal processes. Also comments included a request for clarification on how the waste from the vacuum truck was handled and to provide a data quality checklist for each data set from the laboratory.

Jonathan Schick

9/2/2008

Update or Other Action

Jonathan Schick

9/25/2008

Document, Report, or Work plan Review - other

ADEC staff received a copy of the Final Pipeline Closure Report for the Former Yakutat Air Force Base Air Corps Operations Reserve Tank Farm Mainline Removal, Drain, or Pig from the 2008 Field Season. The Report is dated September 2008.

Jonathan Schick

9/30/2009

Update or Other Action

ADEC staff signed a CON/HTRW project closeout report for the Formerly Used Defense Sites associated with the Yakutat Air Base. The State of Alaska, through the Department of Environmental Conservation concurs with this USACE project closure. The decision may be reviewed or modified in the future if information becomes available that indicates the presence oif military CON/HTRW that may cause unacceptable risk to human health or the environment. The remediation of these sites will continue as necessary, this report only states that no containerized wastes are known to be present at the subject sites.

Jonathan Schick

3/17/2010

Update or Other Action

ADEC Staff issued a letter to the USACE approving the finalization of the Feasibility Study Report as all of the State's comments have been responded to and incorporated in the document.

Jonathan Schick

10/22/2010

CERCLA FS

Contaminated Sites Staff submitted a letter to the US Army Corps of Engineers approving the Final Version of the Feasibility Study Report. Two separate drum dumps at the tank farm were investigated as AOC L1. Contamination was not found above applicable cleanup levels at the north drum dump, and no further DoD action was recommended. GRO, benzene, and toluene in surface and subsurface soil, and GRO and benzene in groundwater are considered COCs at the drum dump northwest of Tank 8 (South Drum Dump) at AOC L1. The pipeline system junctions investigated as AOC L2 consisted of seven concrete junction vaults within the tank farm, a fuel dispensing hose associated with a tank truck fill stand, 2 lateral and 1 drain line breaks, and a booster pump, oil-water separator, and air release tank. Contamination was not found above applicable cleanup levels at AOC L2, and no further DoD action was recommended. The 15 AST foundations were investigated as AOC L3. Benzene in surface soil at Tank 14, benzo(a)pyrene in surface soil at Tank 1, Tank 3, Tank 7, Tank 8, and Tank 11, and benzo(a)anthracene in surface soil at Tank 8 are considered COCs at AOC L3. Contamination was not found above applicable cleanup levels at ASTs 2,4,5,6,9,10,12,13, and 15; no further DoD action was recommended for these sites. The Truck Fill Stand No. 4 was investigated as AOC L4; benzo(a)pyrene and DRO in surface soil are considered COCs at AOC L4. The Tank Farm Pump House was investigated as AOC L5. Contamination was not found above applicable cleanup levels and no further DoD action was recommended at AOC L5.

Jonathan Schick

10/22/2010

CERCLA FS

Jonathan Schick

9/29/2014

Site Visit

The ADEC contaminated Sites staff participated in a Restoration Advisory Board (RAB) meeting, a tribal meeting, and site inspections in Yakutat with the Army Corps of Engineers to share information on the status of Formerly Used Defense Site investigation and cleanup activities around Yakutat.

Jessica Morris

2/17/2015

CERCLA Proposed Plan

The ADEC Contaminated Sites Program approved the February 2015 Proposed Plan for No Department of Defense Action Indicated (NDAI) for the Yakutat Air Base Formerly Used Defense Sites. The proposed plan included only the following areas of concern (AOCs) at this site: Air Corps Operations Reserve(ACOR) Tank Farm, North Drum Dump (AOC L1), ACOR Tank Farm Pipeline System Seven Junctions (AOC L2), ACOR Tanks 2, 4, 5, 6, 9, 10, 12, 13, 15 (AOC L3), and ACOR Tank Farm Pump house (AOC L5). For these AOCs, no additional remedial action, no additional review, no implementation of long term management or land use controls is planned by the Department of Defense. If new information becomes available indicating risk or concern of military-related contamination at these AOCs, further evaluation may be warranted.

Jessica Morris

9/28/2015

Update or Other Action

The ADEC Contaminated Sites Program approved the Decision Document and No Department of Defense Action Indicated Report for the Former Yakutat Air Base, Yakutat, Alaska. This document included site closure for L1 - ACOR Tank Farm - North Drum Dump, L2 - ACOR Tank Farm, Pipeline System - 7 Junctions, L3 - ACOR Tank No. 1302 (AST2), L3 - ACOR Tank No. 14 (AST 4), L3 - ACOR Tank No. 1315 (AST 5), L3 - ACOR Tank No. 1312 (AST 6), L3 - ACOR Tank No. 1309 (AST 9), L3 - ACOR Tank No. 1307 (AST 10), L3 - ACOR Tank No. 1311 (AST 12), L3 - ACOR Tank No. 1310 (AST 13), L3 - ACOR Tank No. 1304 (AST 15), and L5 - ACOR Tank Farm Pump House.

Jessica Morris

10/15/2015

Site Visit

The ADEC contaminated Sites staff participated in a Restoration Advisory Board (RAB) meeting and site inspections in Yakutat with the Army Corps of Engineers to share information on the status of Formerly Used Defense Site investigation and cleanup activities around Yakutat.

Jessica Morris

7/7/2016

Cleanup Plan Approved

The ADEC Contaminated Sites Program approved the CON/HTRW Removal Action Work Plan for the Yakutat Air Base FUDS, Yakutat Alaska. Soil removals are planned to occur at L1-South Drum Dump, L3 Tank Foundations for AST 1, AST3, AST7, AST8, AST11, and AST 14, and the L4- Truck Fill Stand No. 4.

Jessica Morris

10/11/2016

Site Visit

Jessica Morris

6/2/2017

Update or Other Action

The ADEC Contaminated Sites Program submitted comments on the draft Removal Action Report for the Air Corps Tank Farm. Over 5,000 tons of petroleum contaminated soil was excavated and barged offsite for disposal. Contamination associated with ACOR Tank Farm was removed below applicable cleanup levels, and the conclusions support a cleanup complete determination for all areas of concern within the site.

Jessica Morris

10/4/2017

Update or Other Action

The ADEC Contaminated Sites Program sent a letter to the USACE documenting the State's non-concurrence with the Revised Property Survey Summary Sheet for DERP-FUDS Property No. F10AK0606, Inventory Project Report (INPR) for the Yakutat Air Base, Yakutat Alaska. ADEC does not have sufficient information to concur with the reduction of the overall Yakutat Air Base FUDS eligible projects, as described in the INPR. ADEC requested more information regarding the overall site reduction and a meeting with the USACE.

Jessica Morris

2/16/2018

CERCLA Removal Action Report

The ADEC Contaminated Sites Program accepted the Removal Action Report for the Air Corps Tank Farm as the final documentation for the removal action activities during the 2016 field season. Over 5,000 tons of petroleum contaminated soil was excavated and barged offsite for disposal. Contamination associated with ACOR Tank Farm was removed below applicable cleanup levels, and the conclusions support a cleanup complete determination for all areas of concern within the site.

Jessica Morris

7/30/2020

Update or Other Action

ADEC received a copy of the “Declaration of Project Closeout Decision for Yakutat Air Base Formerly Used Defense Site CON/HTRW Project F10AK0606-06 L Concern – Air Corps Operations Reserve (ACOR) Tank Farm Yakutat, Alaska” dated May 2020 on May 01, 2020. ADEC agrees that this project closure is consistent with state investigation and cleanup requirements listed in 18 AAC 75. This decision may be reviewed and modified in the future if information becomes available that indicates an unacceptable risk to human health or the environment associated with the project. ADEC will wait until the final signed closeout report is submitted before closing site.

Rachael Petraeus

11/9/2020

Cleanup Complete Determination Issued

On November 09, 2020 ADEC received the final “Declaration of Project Closeout Decision for Yakutat Air Base Formerly Used Defense Site CON/HTRW Project F10AK0606-06 L Concern – Air Corps Operations Reserve (ACOR) Tank Farm Yakutat, Alaska”. ADEC sent closure letter finalizing the site closure.

Rachael Petraeus

Contaminant Information

Name	Level Description	Media	Comments
Benzene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	SoilGroundwaterGroundwater

Name

Level Description

Media

Comments

Benzene

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

SoilGroundwaterGroundwater

Control Type

Type	Details
No ICs Required

Type

Details

No ICs Required

Requirements

Description	Details
Advance approval required to transport soil or groundwater off-site.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

Description

Details

Advance approval required to transport soil or groundwater off-site.

Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

Closure Figures ACOR Tank Farm

Closure Letter ACOR Tank Farm

Project Closeout Report ACOR Tank Farm

No associated sites were found.

Missing Location Data

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Alaska Department of Environmental Conservation

Site Report: Yakutat AFB Air Corps Tank Farm

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Closure Figures ACOR Tank Farm

Closure Letter ACOR Tank Farm

Project Closeout Report ACOR Tank Farm

Missing Location Data

State of Alaska Department of Environmental Conservation