Site Report: Gulkana NALEMP

Site Name:	Gulkana NALEMP
Address:	MP 127.5 Richardson Highway, Gakona, AK 99586
File Number:	140.38.056
Hazard ID:	26750
Status:	Active
Staff:	Kelly Walker, 9074512166 kelly.walker@alaska.gov
Latitude:	62.273547
Longitude:	-145.387219
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

In 2008, a Tier I Reconnaissance Report was prepared for the Gulkana Village Council under the Native American Lands Environmental Mitigation Program (NALEMP) that identified five areas impacted by former Department of Defense activities. The Formerly Used Defense Site (FUDS) project is also referred to as the "Alaska Highway" Richardson Highway Mile 127.5 Site (F10AK0044). The five areas identified in the 2008 report include: Dump Site No. 1 - North Bluff Area Dump Site No. 2 - North West Access Road Dump Site No. 3 - Old Military Site and Tunnels Dump Site No. 4 - Ewan House Area Dump Site No. 5 - Former Airstrip and Dump Area Multiple investigative and/or removal actions have occurred at these sites under NALEMP. At Dump Site No. 3 a wood-cribbed well/sump area was identified. It is approximately 6 by 8 feet wide, and 4 feet deep, and appeared to have contained oil and diesel fuel. A tar-like preservative coated the wood cribbing. A 2-inch steel underground pipeline terminated at the cribbed box. Based upon field observations and analytical results, both soil and groundwater are impacted at the site.

Action Information

Action Date	Action	Description	DEC Staff
8/19/2008	Update or Other Action	Comments were sent to the Gulkana Tribal Council on the NALEMP Remediation Work Plan, Gulkana, Alaska, Draft Final June 2008.	Debra Caillouet
8/19/2008	Potentially Responsible Party/State Interest Letter	Notice of intent to seek reimbursement for State oversight expenses on contaminated site cleanup work at the Village of Gulkana sites under the NALEMP agreement was sent to the Gulkana Tribal Council. The Army Corps of Engineers includes funding for DEC reimbursement in its NALEMP cooperative agreement with the Tribe.	Debra Caillouet
12/5/2008	Document, Report, or Work plan Review - other	Staff reviewed the NALEMP Remediation Tier I Reconnaissance Report. No contamination above Method II cleanup levels was found. Surface debris was identified at all locations but site conditions did not allow for a complete delineation of the extent.	Debra Caillouet
8/12/2009	Document, Report, or Work plan Review - other	Staff received the Tier III Geophysical Survey report contracted under NALEMP by the Gulkana Village Council. Two areas were noted in the Dump Site 3 area and one in the Dump Site 1 area.	Debra Caillouet
8/9/2011	Cleanup Plan Approved	The Final NALEMP Restoration Work Plan was received. The final work plan addresses all ADEC comments. Work will begin in August to close out open wells, remove drums, concrete foundations, and any contaminated soil associated with 4 sites in the area.	Meghan Dooley
10/10/2011	Document, Report, or Work plan Review - other	Gulkana NALEMP FY08 Comprehensive Report, Draft, Sept 2011 was reviewed. The report documents clearing of several areas and removal of metallic debris and drums of tar. No suspected contamination identified.	Debra Caillouet
9/28/2012	Document, Report, or Work plan Review - other	NALEMP Restoration Work Plan Addendum, Gulkana, Final September 2012.	Debra Caillouet
1/10/2013	Site Characterization Report Approved	Gulkana NALEMP Fiscal Year 2011, Comprehensive Report, Draft, Gulkana, Alaska, January 2013. The report documents exceedances of DRO and RRO at the Dump Site 3, Wooden Cribbed Well/Sump.	Debra Caillouet
1/10/2013	Exposure Tracking Model Ranking	Initial ranking with ETM completed for source area id: 79385 name: Wooden crib	Debra Caillouet
2/5/2013	Site Characterization Report Approved	Gulkana NALEMP Fiscal Year 2011, Comprehensive Report, Final, Gulkana, Alaska, January 2013 The report provides a concise narrative of the work accomplished in removing debris and the sampling and analysis that was done at the wood cribbed well/sump found at Dump Site 3. DEC concurs with the recommendation for additional site characterization.	Debra Caillouet
5/1/2014	Site Characterization Report Approved	Gulkana NALEMP 2013 Site Investigation Report, Revision 1, April 2014.	Debra Caillouet
6/12/2014	Cleanup Plan Approved	Gulkana NALEMP Restoration Work Plan Addendum, Final May 2014 is approved under 18 AAC 75.360 Cleanup Operations.	Debra Caillouet
6/30/2015	Site Characterization Workplan Approved	DEC approved the draft NALEMP Site Investigation and Restoration Work Plan, draft May 2015 and provided minor editorial comments.	Debra Caillouet
7/31/2015	Cleanup Plan Approved	DEC sent an email message approving the NALEMP Site Investigation and Restoration Workplan for 2015.	Debra Caillouet
1/13/2016	Document, Report, or Work plan Review - other	DEC reviewed and approved final report entitled "2014-15 Site Remedial Action Report." The report included details on the work completed, including: containerized hazardous, toxic, and radioactive waste removal; and a removal action at Dump Site Number 3 cribbed well location. For the latter removal action, a total of 135.65 tons (approximately 106 cubic yards) of petroleum, oil, and lubricant (POL)-contaminated soil was excavated from the cribbed well/sump area location, then transported to and thermally treated by Alaska Soil Recycling, Inc. According to final confirmation samples taken at Dump Site No. 3 cribbed well location, additional soil contamination above ADEC Method Two Soil Cleanup Levels remains for that diesel range organic (DRO) and 1-methylnaphthalene. Additional site investigation and removal action activities are warranted for this area of concern.	Joy Whitsel
8/9/2017	Site Added to Database	A new site has been added to the database	Mitzi Read
8/24/2017	Site Characterization Workplan Approved	DEC approved the Dump Site No. 1 Work Plan Addendum. The objectives described within the work plan addendum included: confirming the presence (or absence) and extent of pentachlorophenol that was detected in August 2016; Advance a series of additional test trenches in the vicinity of the base of the Dump Site No. 1 Bluff Area to further investigate for potential contamination and presence of debris.	Joy Whitsel
2/12/2018	Document, Report, or Work plan Review - other	Reviewed the “Removal Action and Land Restoration Report, Revision 0 (Draft), Gulkana, Alaska” dated December 2017, and provided comments on the report to the Gulkana Village Council and U.S. Army Corps of Engineers.	Melinda Brunner
3/2/2018	Update or Other Action	On March 2, 2018, DEC evaluated and concurred with the Gulkana Village Council's proposed changes to the “Removal Action and Land Restoration Report, Revision 0 (Draft), Gulkana, Alaska” dated December 2017.	Melinda Brunner
3/28/2018	Site Characterization Report Approved	DEC approved the “Removal Action and Land Restoration Report, Revision 1 (Final), Gulkana, Alaska” dated March 2018 on March 28, 2018. The report describes a variety of activities undertaken at Dump Sites No. 1, 3 and 5 during 2016 and 2017, to include land restoration, debris removal, soil and groundwater sampling, and contaminated soil removal/disposal. Soil sampling documented contamination remaining in place above DEC’s Method Two cleanup levels at all three dump sites, and additional investigation is needed. Glycols were identified as potential contaminants of concern that shall be sampled for during future investigation due to the presence of "sweet" odors and discarded anti-freeze containers in the test pits.	Melinda Brunner
4/20/2018	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) reviewed the “Dump Site No. 1 Site Investigation Report, Revision 0 (Draft), Gulkana, Alaska” dated March 2018. The report describes soil removal and soil sampling at Dump Site No. 1’s “Soil Boring 2” where pentachlorophenol (PCP) above DEC’s Method Two cleanup levels was previously detected. The report also documents investigation of four additional trenches, where no exceedances of DEC’s Method Two cleanup levels were detected in soil, though it is of note that the method detection limit for many of the investigated analytes were above DEC’s Method Two cleanup levels. Additional work is needed to confirm removal of the PCP contamination. Comments on the report were provided to the Gulkana Village Council and U.S. Army Corps of Engineers on 4/20/2018.	Melinda Brunner
4/27/2018	Document, Report, or Work plan Review - other	The Gulkana Village Council (GVC) provided response to the Alaska Department of Environmental Conservation's (DEC) comments on the “Dump Site No. 1 Site Investigation Report, Revision 0 (Draft), Gulkana, Alaska” dated March 2018 on 04/24/2018. DEC concurred with the GVC's response to comments on 04/27/2018.	Melinda Brunner
6/19/2018	Document, Report, or Work plan Review - other	DEC reviewed the “Site Assessment, Site Investigation, and Debris Removal Work Plan, Gulkana NALEMP Dump Site Nos. 1 and 2, Gulkana, Alaska, Draft (Revision 0)" dated May 2018. The work plan describes: debris removal; confirmation sampling at Dump Site No. 1’s “Soil Boring 2” where pentachlorophenol above DEC’s Method Two cleanup levels was previously detected; and soil sampling in test trenches at Dump Site No. 2. DEC provided comments on the work plan to the Gulkana Village Council on June 19, 2018.	Melinda Brunner
7/5/2018	Document, Report, or Work plan Review - other	DEC evaluated the Gulkana Village Council's response to DEC's 19 June 2018 comments on the “Site Assessment, Site Investigation, and Debris Removal Work Plan, Gulkana NALEMP Dump Site Nos. 1 and 2, Gulkana, Alaska, Draft (Revision 0)” dated May 2018. DEC accepted the proposed changes to the work plan and requested a final copy of the work plan for backcheck and approval.	Melinda Brunner
7/13/2018	Site Characterization Report Approved	DEC approved the 'Dump Site No. 1 Site Investigation Report, Final (Revision 1), Gulkana, Alaska' dated May 2018. The report details the removal and sampling of soil at Dump Site No 1's "Soil Boring 2", and the investigation of four additional trenches. Due to QA/QC issues, the samples from "Soil Boring 2" do not confirm all pentachlorophenol contamination above ADEC's Method Two cleanup level was removed. Additional investigation is needed at "Soil Boring 2".	Sammi Castle
7/23/2018	Site Characterization Workplan Approved	ADEC approved the "Site Assessment, Site Investigation, and Debris Removal Work Plan, Gulkana NALEMP Dump Site Nos. 1 and 2, Gulkana, Alaska, Final (Revision 1)" dated July 2018, in a letter dated July 23, 2018. This work plan describes: debris removal; confirmation sampling at Dump Site No. 1's 'Soil Boring 2' where pentachlorophenol above ADEC's Method Two cleanup levels was previously detected; and soil sampling in test trenches at Dump Site No. 2.	Sammi Castle
8/16/2019	Document, Report, or Work plan Review - other	DEC approved the Final North Bluff Dumpsite and Northwest Access Road Areas Site Assessment, Site Investigation, and Debris Removal Report Dated August 2019. A site assessment was conducted at the Northwest Access Road area to determine if buried debris was present. During trench excavation for this activity, no debris was found and no contamination was encountered. Debris removal was conducted at the North Bluff Dumpsite, where 132 cubic yards of metal debris was extracted and disposed of. Debris reportedly still remains at this area. Additionally, soil was excavated at the 2016 Soil Boring No. 2 location to remove potential pentachlorophenol contamination. The excavation pit was tested for contamination, but due to soil moisture, levels of detection for pentachlorophenol continue to be above the DEC cleanup level. Further site investigation activities at the Dumpsite were conducted, including removing 20 cubic yards of contaminated lead and pentachlorophenol soil at a location where stained wood debris was found, but pentachlorophenol remains above DEC cleanup levels in this area. Finally, 2 yards of lead-contaminated soil was excavated and disposed of from an area where battery debris had been found. Subsequent soil samples in the battery discovery area showed that contamination no longer remains above cleanup levels.	Kevin Fraley
5/4/2021	Document, Report, or Work plan Review - other	Review completed for the Interim Debris Removal Technical Memorandum Report for the North Bluff Dumpsite Area, located near Gulkana Village, AK. Memo detailed debris removal and soil excavation conducted at North Bluff Dumpsite in 2020. Approx. 80 cubic yards of metallic debris was removed from northwestern section of site. Memo is approved.	Kelly Walker
3/31/2022	Document, Report, or Work plan Review - other	Review completed for Interim Debris Removal Technical Memorandum Report for the North Bluff Dumpsite Area and comments provided to Gulkana Village Council. Memo detailed continuation of soil and debris removal from the North Bluff Dumpsite. Approximately 18 cubic yards of metallic debris was excavated and disposed of in the Glennallen Landfill. Soil Stockpile No. 4 was unable to be sampled due to inclement weather conditions, stockpile will be sampled in 2022.	Kelly Walker
4/29/2022	Document, Report, or Work plan Review - other	Review completed for Former Wood-Cribbed Well/Sump Area Soil Removal and Site Investigation Work Plan for the 2022 field season. Up to 100 cubic yards of contaminated soils will be excavated at the Former Wood-Cribbed Well/Sump Area. Approximately 50 feet of buried pipeline, located directly adjacent to the Former Wood-Cribbed Well/Sump Area, will be excavated, removed and disposed of.	Kelly Walker
3/23/2023	Site Characterization Report Approved	DEC completed review and approved the Soil/Debris Removal and Site Investigation Report for the North Bluff Dumpsite and Former Wood-Cribbed Well/Sump Area sites. This report detailed the debris and soil removal conducted during the 2022 field season. Additional excavation and debris removal was conducted at the North Bluff Dumpsite area, including the temporary stockpiling and confirmation sampling of associated soils at Soil Stockpile No. 4. Soil removal and site investigation activities was conducted at the former Wood-Cribbed Well/Sump Area. Additional soil removal will be conducted in 2023 at the Former Wood-Cribbed Well/Sump Area.	Kelly Walker
4/30/2024	Document, Report, or Work plan Review - other	DEC reviewed and approved the "Site Investigation and Removal Action Work Plan for Former Wood-Cribbed Well/Sump Area and Former Airstrip Area" for the Gulkana NALEMP site. This work plan details the continuation of site investigation at the Former Wood-Cribbed Well/Sump Area, including the installation of up to four permanent groundwater monitoring wells. Two new areas of interest will be investigated, DS5-1 and DS5-2, for soil and groundwater contamination.	Kelly Walker

Action Date

Action

Description

DEC Staff

8/19/2008

Update or Other Action

Comments were sent to the Gulkana Tribal Council on the NALEMP Remediation Work Plan, Gulkana, Alaska, Draft Final June 2008.

Debra Caillouet

8/19/2008

Potentially Responsible Party/State Interest Letter

Notice of intent to seek reimbursement for State oversight expenses on contaminated site cleanup work at the Village of Gulkana sites under the NALEMP agreement was sent to the Gulkana Tribal Council. The Army Corps of Engineers includes funding for DEC reimbursement in its NALEMP cooperative agreement with the Tribe.

Debra Caillouet

12/5/2008

Document, Report, or Work plan Review - other

Staff reviewed the NALEMP Remediation Tier I Reconnaissance Report. No contamination above Method II cleanup levels was found. Surface debris was identified at all locations but site conditions did not allow for a complete delineation of the extent.

Debra Caillouet

8/12/2009

Document, Report, or Work plan Review - other

Staff received the Tier III Geophysical Survey report contracted under NALEMP by the Gulkana Village Council. Two areas were noted in the Dump Site 3 area and one in the Dump Site 1 area.

Debra Caillouet

8/9/2011

Cleanup Plan Approved

The Final NALEMP Restoration Work Plan was received. The final work plan addresses all ADEC comments. Work will begin in August to close out open wells, remove drums, concrete foundations, and any contaminated soil associated with 4 sites in the area.

Meghan Dooley

10/10/2011

Document, Report, or Work plan Review - other

Gulkana NALEMP FY08 Comprehensive Report, Draft, Sept 2011 was reviewed. The report documents clearing of several areas and removal of metallic debris and drums of tar. No suspected contamination identified.

Debra Caillouet

9/28/2012

Document, Report, or Work plan Review - other

NALEMP Restoration Work Plan Addendum, Gulkana, Final September 2012.

Debra Caillouet

1/10/2013

Site Characterization Report Approved

Gulkana NALEMP Fiscal Year 2011, Comprehensive Report, Draft, Gulkana, Alaska, January 2013. The report documents exceedances of DRO and RRO at the Dump Site 3, Wooden Cribbed Well/Sump.

Debra Caillouet

1/10/2013

Exposure Tracking Model Ranking

Initial ranking with ETM completed for source area id: 79385 name: Wooden crib

Debra Caillouet

2/5/2013

Site Characterization Report Approved

Gulkana NALEMP Fiscal Year 2011, Comprehensive Report, Final, Gulkana, Alaska, January 2013 The report provides a concise narrative of the work accomplished in removing debris and the sampling and analysis that was done at the wood cribbed well/sump found at Dump Site 3. DEC concurs with the recommendation for additional site characterization.

Debra Caillouet

5/1/2014

Site Characterization Report Approved

Gulkana NALEMP 2013 Site Investigation Report, Revision 1, April 2014.

Debra Caillouet

6/12/2014

Cleanup Plan Approved

Gulkana NALEMP Restoration Work Plan Addendum, Final May 2014 is approved under 18 AAC 75.360 Cleanup Operations.

Debra Caillouet

6/30/2015

Site Characterization Workplan Approved

DEC approved the draft NALEMP Site Investigation and Restoration Work Plan, draft May 2015 and provided minor editorial comments.

Debra Caillouet

7/31/2015

Cleanup Plan Approved

DEC sent an email message approving the NALEMP Site Investigation and Restoration Workplan for 2015.

Debra Caillouet

1/13/2016

Document, Report, or Work plan Review - other

DEC reviewed and approved final report entitled "2014-15 Site Remedial Action Report." The report included details on the work completed, including: containerized hazardous, toxic, and radioactive waste removal; and a removal action at Dump Site Number 3 cribbed well location. For the latter removal action, a total of 135.65 tons (approximately 106 cubic yards) of petroleum, oil, and lubricant (POL)-contaminated soil was excavated from the cribbed well/sump area location, then transported to and thermally treated by Alaska Soil Recycling, Inc. According to final confirmation samples taken at Dump Site No. 3 cribbed well location, additional soil contamination above ADEC Method Two Soil Cleanup Levels remains for that diesel range organic (DRO) and 1-methylnaphthalene. Additional site investigation and removal action activities are warranted for this area of concern.

Joy Whitsel

8/9/2017

Site Added to Database

A new site has been added to the database

Mitzi Read

8/24/2017

Site Characterization Workplan Approved

DEC approved the Dump Site No. 1 Work Plan Addendum. The objectives described within the work plan addendum included: confirming the presence (or absence) and extent of pentachlorophenol that was detected in August 2016; Advance a series of additional test trenches in the vicinity of the base of the Dump Site No. 1 Bluff Area to further investigate for potential contamination and presence of debris.

Joy Whitsel

2/12/2018

Document, Report, or Work plan Review - other

Reviewed the “Removal Action and Land Restoration Report, Revision 0 (Draft), Gulkana, Alaska” dated December 2017, and provided comments on the report to the Gulkana Village Council and U.S. Army Corps of Engineers.

Melinda Brunner

3/2/2018

Update or Other Action

On March 2, 2018, DEC evaluated and concurred with the Gulkana Village Council's proposed changes to the “Removal Action and Land Restoration Report, Revision 0 (Draft), Gulkana, Alaska” dated December 2017.

Melinda Brunner

3/28/2018

Site Characterization Report Approved

DEC approved the “Removal Action and Land Restoration Report, Revision 1 (Final), Gulkana, Alaska” dated March 2018 on March 28, 2018. The report describes a variety of activities undertaken at Dump Sites No. 1, 3 and 5 during 2016 and 2017, to include land restoration, debris removal, soil and groundwater sampling, and contaminated soil removal/disposal. Soil sampling documented contamination remaining in place above DEC’s Method Two cleanup levels at all three dump sites, and additional investigation is needed. Glycols were identified as potential contaminants of concern that shall be sampled for during future investigation due to the presence of "sweet" odors and discarded anti-freeze containers in the test pits.

Melinda Brunner

4/20/2018

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) reviewed the “Dump Site No. 1 Site Investigation Report, Revision 0 (Draft), Gulkana, Alaska” dated March 2018. The report describes soil removal and soil sampling at Dump Site No. 1’s “Soil Boring 2” where pentachlorophenol (PCP) above DEC’s Method Two cleanup levels was previously detected. The report also documents investigation of four additional trenches, where no exceedances of DEC’s Method Two cleanup levels were detected in soil, though it is of note that the method detection limit for many of the investigated analytes were above DEC’s Method Two cleanup levels. Additional work is needed to confirm removal of the PCP contamination. Comments on the report were provided to the Gulkana Village Council and U.S. Army Corps of Engineers on 4/20/2018.

Melinda Brunner

4/27/2018

Document, Report, or Work plan Review - other

The Gulkana Village Council (GVC) provided response to the Alaska Department of Environmental Conservation's (DEC) comments on the “Dump Site No. 1 Site Investigation Report, Revision 0 (Draft), Gulkana, Alaska” dated March 2018 on 04/24/2018. DEC concurred with the GVC's response to comments on 04/27/2018.

Melinda Brunner

6/19/2018

Document, Report, or Work plan Review - other

DEC reviewed the “Site Assessment, Site Investigation, and Debris Removal Work Plan, Gulkana NALEMP Dump Site Nos. 1 and 2, Gulkana, Alaska, Draft (Revision 0)" dated May 2018. The work plan describes: debris removal; confirmation sampling at Dump Site No. 1’s “Soil Boring 2” where pentachlorophenol above DEC’s Method Two cleanup levels was previously detected; and soil sampling in test trenches at Dump Site No. 2. DEC provided comments on the work plan to the Gulkana Village Council on June 19, 2018.

Melinda Brunner

7/5/2018

Document, Report, or Work plan Review - other

DEC evaluated the Gulkana Village Council's response to DEC's 19 June 2018 comments on the “Site Assessment, Site Investigation, and Debris Removal Work Plan, Gulkana NALEMP Dump Site Nos. 1 and 2, Gulkana, Alaska, Draft (Revision 0)” dated May 2018. DEC accepted the proposed changes to the work plan and requested a final copy of the work plan for backcheck and approval.

Melinda Brunner

7/13/2018

Site Characterization Report Approved

DEC approved the 'Dump Site No. 1 Site Investigation Report, Final (Revision 1), Gulkana, Alaska' dated May 2018. The report details the removal and sampling of soil at Dump Site No 1's "Soil Boring 2", and the investigation of four additional trenches. Due to QA/QC issues, the samples from "Soil Boring 2" do not confirm all pentachlorophenol contamination above ADEC's Method Two cleanup level was removed. Additional investigation is needed at "Soil Boring 2".

Sammi Castle

7/23/2018

Site Characterization Workplan Approved

ADEC approved the "Site Assessment, Site Investigation, and Debris Removal Work Plan, Gulkana NALEMP Dump Site Nos. 1 and 2, Gulkana, Alaska, Final (Revision 1)" dated July 2018, in a letter dated July 23, 2018. This work plan describes: debris removal; confirmation sampling at Dump Site No. 1's 'Soil Boring 2' where pentachlorophenol above ADEC's Method Two cleanup levels was previously detected; and soil sampling in test trenches at Dump Site No. 2.

Sammi Castle

8/16/2019

Document, Report, or Work plan Review - other

DEC approved the Final North Bluff Dumpsite and Northwest Access Road Areas Site Assessment, Site Investigation, and Debris Removal Report Dated August 2019. A site assessment was conducted at the Northwest Access Road area to determine if buried debris was present. During trench excavation for this activity, no debris was found and no contamination was encountered. Debris removal was conducted at the North Bluff Dumpsite, where 132 cubic yards of metal debris was extracted and disposed of. Debris reportedly still remains at this area. Additionally, soil was excavated at the 2016 Soil Boring No. 2 location to remove potential pentachlorophenol contamination. The excavation pit was tested for contamination, but due to soil moisture, levels of detection for pentachlorophenol continue to be above the DEC cleanup level. Further site investigation activities at the Dumpsite were conducted, including removing 20 cubic yards of contaminated lead and pentachlorophenol soil at a location where stained wood debris was found, but pentachlorophenol remains above DEC cleanup levels in this area. Finally, 2 yards of lead-contaminated soil was excavated and disposed of from an area where battery debris had been found. Subsequent soil samples in the battery discovery area showed that contamination no longer remains above cleanup levels.

Kevin Fraley

5/4/2021

Document, Report, or Work plan Review - other

Review completed for the Interim Debris Removal Technical Memorandum Report for the North Bluff Dumpsite Area, located near Gulkana Village, AK. Memo detailed debris removal and soil excavation conducted at North Bluff Dumpsite in 2020. Approx. 80 cubic yards of metallic debris was removed from northwestern section of site. Memo is approved.

Kelly Walker

3/31/2022

Document, Report, or Work plan Review - other

Review completed for Interim Debris Removal Technical Memorandum Report for the North Bluff Dumpsite Area and comments provided to Gulkana Village Council. Memo detailed continuation of soil and debris removal from the North Bluff Dumpsite. Approximately 18 cubic yards of metallic debris was excavated and disposed of in the Glennallen Landfill. Soil Stockpile No. 4 was unable to be sampled due to inclement weather conditions, stockpile will be sampled in 2022.

Kelly Walker

4/29/2022

Document, Report, or Work plan Review - other

Review completed for Former Wood-Cribbed Well/Sump Area Soil Removal and Site Investigation Work Plan for the 2022 field season. Up to 100 cubic yards of contaminated soils will be excavated at the Former Wood-Cribbed Well/Sump Area. Approximately 50 feet of buried pipeline, located directly adjacent to the Former Wood-Cribbed Well/Sump Area, will be excavated, removed and disposed of.

Kelly Walker

3/23/2023

Site Characterization Report Approved

DEC completed review and approved the Soil/Debris Removal and Site Investigation Report for the North Bluff Dumpsite and Former Wood-Cribbed Well/Sump Area sites. This report detailed the debris and soil removal conducted during the 2022 field season. Additional excavation and debris removal was conducted at the North Bluff Dumpsite area, including the temporary stockpiling and confirmation sampling of associated soils at Soil Stockpile No. 4. Soil removal and site investigation activities was conducted at the former Wood-Cribbed Well/Sump Area. Additional soil removal will be conducted in 2023 at the Former Wood-Cribbed Well/Sump Area.

Kelly Walker

4/30/2024

Document, Report, or Work plan Review - other

DEC reviewed and approved the "Site Investigation and Removal Action Work Plan for Former Wood-Cribbed Well/Sump Area and Former Airstrip Area" for the Gulkana NALEMP site. This work plan details the continuation of site investigation at the Former Wood-Cribbed Well/Sump Area, including the installation of up to four permanent groundwater monitoring wells. Two new areas of interest will be investigated, DS5-1 and DS5-2, for soil and groundwater contamination.

Kelly Walker

Contaminant Information

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Site Report: Gulkana NALEMP

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