Site Report: Davidson's Landing / DERP/ Site 8

Site Name:	Davidson's Landing / DERP/ Site 8
Address:	Davidson's Landing, Nome, AK 99762
File Number:	475.38.006
Hazard ID:	1152
Status:	Cleanup Complete
Staff:	No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude:	65.235708
Longitude:	-165.271503
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

2,100 empty drums, 3 full grease drums, and 2 partially full 5 gallon oil cans for a total of 175 gallons of petroleum, oil and lubricants. 1,000 cubic yards of soil contaminated with diesel fuel, bunker oil and volatile organics near empty drums. Human health impact unknown. DERP-FUD. Phase II review, June 1991. ACOE# F10AK008601, F10AK008602. State ID. # AK901213-06/F. *Mary's Igloo Native Corp./Bering Straits Native Corp. Permit# 9132-BA009. The site was developed as an emergency satellite airfield and fuel cache during WWII. According to the FUDS Site Summary dated 2/21/96, the site is overgrown, on permafrost, and has the remains of 3 wood-frame buildings, 4 quonset huts, 3 concrete foundations, over 1,000 barrels, 300 feet of 3-foot diameter thin wall metal pipe, 200 bags of solidified cement, and another ton of miscellaneous iron. (rpltr3.1) Cleanup conducted in 1994-1995 by Corps of Engineers, including on-site treatment of petroleum-contaminated soil and demolition/debris removal. Elevated petroleum remaining after this action, and unknown amount of buried debris reported throughout the site.

Action Information

Action Date	Action	Description	DEC Staff
2/2/1992	Site Added to Database	Petroleum contamination.	Former Staff
9/8/1992	Update or Other Action	(Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC sent PRP-CS Database Notification letter to RP requesting update and more environmental information concerning contaminated site. Jim Levine\COE called 10-5-92 and responded by returning updated DECRPTs.	Jeff Peterson
3/16/1993	Meeting or Teleconference Held	Pre-construction conference at Corps of Engineers Fairbanks Resident Engineer Office.	Bob Couch
9/10/1993	Update or Other Action	(Old R:Base Action Code = CORR - Correspondence (General)). 9/10/93 letter sent responding to 9/1/93 letter that proposed remediation levels.	Bob Couch
10/25/1993	Update or Other Action	Scope of work received.	Bob Couch
11/19/1993	Update or Other Action	(Old R:Base Action Code = CORR - Correspondence (General)). Letter commented on public notice dated October 22, 1993, and stated that ADEC had not agreed on alternate clean-up levels that had been discussed, and that are included in the Corps project documents.	Bob Couch
3/1/1994	Update or Other Action	(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Work Plan and Quality Control Plan were submitted 3/1/94, and on 3/7/94 learned that the Corps had returned both plans to the Contractor for revision.	Bob Couch
4/1/1994	Update or Other Action	(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Received Contractor's revised Work Plan and Quality Control Plan.	Bob Couch
8/16/1994	Site Ranked Using the AHRM	Initial ranking.	Former Staff
3/18/1995	Update or Other Action	(Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Completed review of Draft Remedial Action Report Addendum - 1995 Work Season. Upon receipt of final report, this site should be evaluated for possible closure.	Tamar Stephens
5/11/1995	Update or Other Action	(Old R:Base Action Code = RD - Remedial Design). Final Remedial Action Report and supporting documentation received.	Tamar Stephens
9/11/1995	Meeting or Teleconference Held	(Old R:Base Action Code = PUBP - Public Participation)). Clint Adler attended public meeting in Nome in which USACE informed public of work completed, and upcoming work on Nome sites.	Clint Adler
1/18/1996	Meeting or Teleconference Held	ADEC staff, Tamar Stephens and Clint Adler, met with USACE representatives, James Baker, Robert Haviland, Gus Olson, John Jacobson, Curtis King, Ron Pflum, and IT representative Keith Walker, for update on status of Nome sites. 2 biovents are in active use. Significant problems with logistics of getting to site; safety issues in working adjacent to a slough where barrels and contamination found.	Tamar Stephens
3/6/1996	Update or Other Action	(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Received "Draft Remedial Action Report", Addendum 1, 1995 Work Season.	Tamar Stephens
6/28/1996	Update or Other Action	Supporting Documentation, Davidson's Landing Site, Addendum 1, 1995 Work Season, Part I, Analytical Data, and Part II, Supplemental Documentation, Nome Area Sites Project, Seward Peninsula, Alaska, Contract Number DACW1-89-D0133, Delivery Order Number 15, received 8/5/1996.	Tamar Stephens
6/28/1996	Update or Other Action	(Old R:Base Action Code = RA - Remedial Action). Remedial Action Report, Davidson's Landing Site, Addendum 1 1995 Work Season, Nome Area Sites Project, Seward Peninsula, Alaska, Contract Number DACW1-89-D0133, Delivery Order Number 15, received 8/5/1996.	Tamar Stephens
8/26/1996	Update or Other Action	ADEC staff Stephens and Himmelbauer met with James Baker of COE to scope out closure procedures and risk assessment needs for Nome area FUDS project sites.	Tamar Stephens
3/20/1997	Update or Other Action	Site updated by Shannon and Wilson, based on the FUDS Site Summary dated 2/21/96.	S&W
7/29/1998	Site Characterization Report Approved	Approved final Field Investigation Report to support removal action.	Tamar Stephens
8/28/1998	Meeting or Teleconference Held	Public meeting in Teller. Corps of Engineers discussed plans for further investigation and cleanup at Davidson's Landing.	Tamar Stephens
12/15/1998	Update or Other Action	Reviewed draft Field Investigation Report to support a removal action for petroleum contaminated soil at former biovents and landfarm.	Tamar Stephens
12/22/1998	Meeting or Teleconference Held	Review conference with Corps of Engineers on Field Investigation Report.	Tamar Stephens
12/30/1998	Update or Other Action	ADEC peer review to evaluate proposed soil cleanup levels for removal action.	Tamar Stephens
2/9/1999	Update or Other Action	Reviewed draft EE/CA (Engineering evaluation / cost analysis) for proposed removal action at former biovents and landfarm.	Tamar Stephens
4/5/1999	Update or Other Action	Reviewed, concurred with Environmental Assessment that proposed removal action at former biovents and landfarm would not significantly affect the environment.	Tamar Stephens
4/26/2000	Update or Other Action	Review of draft Work Plan for Davidson’s Landing by Tamar Stephens. Additional information requested. Action added by Sarah Riddle.	Tamar Stephens
6/27/2000	Update or Other Action	Contacted Tamar Stephens and asked if she knew anything about the Landowner of this site. She said that the owner died and property transfer to heir not settled yet. She said that she would contact me when new information was available.	Former Staff
10/2/2003	Interim Removal Action Approved	Reviewed and approved final closure report for removal of petroleum contaminated soil. Report describes excavation and removal of approximately 15-cubic yards of petroleum-contaminated soil at a former biovent location at Davidson’s Landing. Work was performed in summer of 2000, but DEC did not receive report until Sept. 2003. The biovent, located adjacent to an un-named slough off of the Kaviruk River, was in operation during a cleanup action during 1994 through 1996 and was designated as Biovent #1. Elevated levels of diesel and residual range organics remained in Biovent #1 soil at the end of 1996 cleanup activities. During the 2000 removal action, the soil was excavated to permafrost, a depth of three to four feet, and transported off site for treatment and disposal. Confirmation sampling showed maximum levels of 23 mg/kg diesel range organics and 89 mg/kg residual range organics at the bottom of the excavation. Benzene, toluene, ethylbenzene, xylenes, and semivolatile organic compounds were not detected. Based on this information, no further cleanup is required at the Biovent #1 location	Tamar Stephens
12/8/2003	GIS Position Updated	Used file to find approximate location of site. Good site map was unavailable.	Torsten Ernst
12/16/2005	Update or Other Action	Telephone conversation with Corps of Engineers project manager: intent is to write a decision document to close out the site as soon as funding is available.	Tamar Stephens
3/28/2008	Exposure Tracking Model Ranking	Initial ranking with ETM completed.	Tamar Stephens
7/14/2008	Site Characterization Workplan Approved	Approved work plan to conduct confirmation sampling at two locations, former Biovent No. 2 and a former landfarm area, where the Corps of Engineers conducted treatment of petroleum-contaminated soil during 1994-1996; to assess for the presence of 55-gallon drums in the un-named slough,;and collect surface water and sediment samples in the slough.	Tamar Stephens
10/3/2008	Document, Report, or Work plan Review - other	Reviewed draft Davidson’s Landing Formerly Used Defense Site Remedial Action Technical Memorandum and sent comment letter.	Tamar Stephens
4/14/2009	Document, Report, or Work plan Review - other	Reviewed and sent approval letter for Underwater Debris Survey Work Plan. In response to past reports of drums in the slough, the Corps of Engineers will conduct and underwater survey of the slough with an undewater video camera to determine the presence of 55 gallon drums or other metallic debris. Field work is scheduled for late August, 2009.	Tamar Stephens
2/9/2010	Document, Report, or Work plan Review - other	Reviewed draft Underwater Debris Survey Report and sent comments letter.	Tamar Stephens
12/2/2011	Document, Report, or Work plan Review - other	Reviewed and sent approval letter for final Underwater Debris Survey Report. Concurred with report recommendation to remove drum fragments found in slough and remove four intact drums found in vegetation near shoreline.	Tamar Stephens
12/2/2011	Document, Report, or Work plan Review - other	Reviewed and sent approval letter for final Remedial Action Technical Memorandum. The report presents the results of sampling in 2008 of former Biovent No. 2 and the former Landfarm where petroleum contaminated soil was treated during a 1994 through 1996 cleanup at the site. The report also presents results of sediment and surface water sampling of the slough. Concur with report conclusions that no further cleanup is needed at Biovent No. 2 or at the Landfarm. Concur that sample results show no violations of Alaska Water Quality Standards of the slough. (Field work was conducted in 2008, but final report was sent to DEC in November 2011.)	Tamar Stephens
2/11/2013	CERCLA Proposed Plan	DEC approved the Corps of Engineers Proposed Plan for Davidson's Landing. The plan calls for removal and off-site disposal of the remaining 55-gallon drums or partial drums and petroleum contaminated soil that is along the west bank of an unnamed slough. The Corps scheduled a public meeting on the Proposed Plan for February 13, 2013.	John Halverson
7/3/2013	Update or Other Action	DEC reviewed and commented on a draft decision document that calls for removal of drums (intact and partial, some of which are submerged in a slough)and petroleum contaminated soil (estimated to be ~ 5 cubic yards in volume) from the site. Several recommendations/clarifications were requested.	John Halverson
1/2/2014	Update or Other Action	Site transferred from Shepard to Savage	Rebecca Bryan
2/4/2014	Update or Other Action	Recieved Draft 2014 Removal Action Work Plan,Davidson's Landing FUDS. Proposed for the 2014 field season is the removal and disposal of 4-5 drums from within the Unnamed Slough, 4 drums from the west bank of the slough and any associated contaminated soil. Fluids from the drums will also be collected and analyzed.	Meredith Savage
4/4/2014	Document, Report, or Work plan Review - other	April 4, 2014- ADEC provided comments on Work Plan and asked for the addition of sediment sampling around the submerged drums if a hydrocarbon sheen is observed during removal.	Meredith Savage
5/23/2014	Update or Other Action	Draft Addendum One to the Removal Action Work Plan received; the work plan addendum covered sediment sampling activity to be conducted if a hydrocarbon sheen is observed during drum removal from the slough at the Davidson's landing site.	Meredith Savage
6/4/2014	Document, Report, or Work plan Review - other	Removal Action Work Plan accepted as final.	Meredith Savage
6/17/2014	Update or Other Action	ADEC requests that sediment samples be analyzed for Semi Volatile Organic Compounds (SVOCs) metals, and Polychlorinated Biphenyls (PCBs).	Meredith Savage
6/30/2014	Update or Other Action	After discussion with RP/RP contractor, ADEC amends comments letter regarding the draft Addendum One to the Removal Action Work Plan to request that sediment samples be taken from within or around the drums regardless of presence or absence of a hydrocarbon sheen; sample analyses should include DRO, RRO, BTEX, PAH, metals, and PCB.	Meredith Savage
7/17/2014	Update or Other Action	Final Addendum One to the Removal Action Work Plan received; work plan addendum includes the requested sediment sampling and sampling analysis.	Meredith Savage
8/4/2014	Document, Report, or Work plan Review - other	Final approval given for Addendum One to the Removal Action Work Plan.	Meredith Savage
10/2/2014	Update or Other Action	Received draft report titled 'Removal Action Report, Davidson's Landing.'	Meredith Savage
10/24/2014	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 72131 Davidsons Landing.	Meredith Savage
12/23/2014	Document, Report, or Work plan Review - other	ADEC received a report titled Final Removal Action Report – Davidson’s Landing FUDS, Alaska, on December 11, 2014. This report addresses actions taken to remove partially buried drums from the site known as Davidson’s Landing. Five drums were removed from a small slough draining into the larger Unnamed Slough that bisects the site and additional drum parts were removed from the Unnamed Slough. Two more drums were found on land along the west bank of the Unnamed Slough. None of the drums were intact enough to hold fluids. Soil or sediment samples were collected from directly beneath each drum or drum carcass and analyzed for diesel range organics (DRO), residual range organics (RRO), polycyclic aromatic hydrocarbons (PAHs), metals, polychlorinated biphenyls (PCBs), and benzene, toluene, ethylbenzene, and xylene, (BTEX). All results were below applicable action levels. Impacts were minimal and site restoration was not required. ADEC has reviewed this report, finds that it adequately meets the applicable requirements of 18 AAC 75.340, .355, and .360, and accepts it as final. Remedial action at this site has fulfilled the requirements laid out in the September 2013 Decision Document and the site is ready for closure.	Meredith Savage
12/29/2014	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 72131 Davidsons Landing.	Meredith Savage
6/19/2015	Institutional Control Record Removed	Institutional Controls have been removed.	Meredith Savage
6/19/2015	Cleanup Complete Determination Issued	The Alaska Department of Environmental Conservation has completed a review of the environmental records associated with the Davidson's Landing Site. Based on the review a Cleanup Complete determination has been issued. No further remedial action is required at this site.	Meredith Savage

Action Date

Action

Description

DEC Staff

2/2/1992

Site Added to Database

Petroleum contamination.

Former Staff

9/8/1992

Update or Other Action

(Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC sent PRP-CS Database Notification letter to RP requesting update and more environmental information concerning contaminated site. Jim Levine\COE called 10-5-92 and responded by returning updated DECRPTs.

Jeff Peterson

3/16/1993

Meeting or Teleconference Held

Pre-construction conference at Corps of Engineers Fairbanks Resident Engineer Office.

Bob Couch

9/10/1993

Update or Other Action

(Old R:Base Action Code = CORR - Correspondence (General)). 9/10/93 letter sent responding to 9/1/93 letter that proposed remediation levels.

Bob Couch

10/25/1993

Update or Other Action

Scope of work received.

Bob Couch

11/19/1993

Update or Other Action

(Old R:Base Action Code = CORR - Correspondence (General)). Letter commented on public notice dated October 22, 1993, and stated that ADEC had not agreed on alternate clean-up levels that had been discussed, and that are included in the Corps project documents.

Bob Couch

3/1/1994

Update or Other Action

(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Work Plan and Quality Control Plan were submitted 3/1/94, and on 3/7/94 learned that the Corps had returned both plans to the Contractor for revision.

Bob Couch

4/1/1994

Update or Other Action

(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Received Contractor's revised Work Plan and Quality Control Plan.

Bob Couch

8/16/1994

Site Ranked Using the AHRM

Initial ranking.

Former Staff

3/18/1995

Update or Other Action

(Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Completed review of Draft Remedial Action Report Addendum - 1995 Work Season. Upon receipt of final report, this site should be evaluated for possible closure.

Tamar Stephens

5/11/1995

Update or Other Action

(Old R:Base Action Code = RD - Remedial Design). Final Remedial Action Report and supporting documentation received.

Tamar Stephens

9/11/1995

Meeting or Teleconference Held

(Old R:Base Action Code = PUBP - Public Participation)). Clint Adler attended public meeting in Nome in which USACE informed public of work completed, and upcoming work on Nome sites.

Clint Adler

1/18/1996

Meeting or Teleconference Held

ADEC staff, Tamar Stephens and Clint Adler, met with USACE representatives, James Baker, Robert Haviland, Gus Olson, John Jacobson, Curtis King, Ron Pflum, and IT representative Keith Walker, for update on status of Nome sites. 2 biovents are in active use. Significant problems with logistics of getting to site; safety issues in working adjacent to a slough where barrels and contamination found.

Tamar Stephens

3/6/1996

Update or Other Action

(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Received "Draft Remedial Action Report", Addendum 1, 1995 Work Season.

Tamar Stephens

6/28/1996

Update or Other Action

Supporting Documentation, Davidson's Landing Site, Addendum 1, 1995 Work Season, Part I, Analytical Data, and Part II, Supplemental Documentation, Nome Area Sites Project, Seward Peninsula, Alaska, Contract Number DACW1-89-D0133, Delivery Order Number 15, received 8/5/1996.

Tamar Stephens

6/28/1996

Update or Other Action

(Old R:Base Action Code = RA - Remedial Action). Remedial Action Report, Davidson's Landing Site, Addendum 1 1995 Work Season, Nome Area Sites Project, Seward Peninsula, Alaska, Contract Number DACW1-89-D0133, Delivery Order Number 15, received 8/5/1996.

Tamar Stephens

8/26/1996

Update or Other Action

ADEC staff Stephens and Himmelbauer met with James Baker of COE to scope out closure procedures and risk assessment needs for Nome area FUDS project sites.

Tamar Stephens

3/20/1997

Update or Other Action

Site updated by Shannon and Wilson, based on the FUDS Site Summary dated 2/21/96.

S&W

7/29/1998

Site Characterization Report Approved

Approved final Field Investigation Report to support removal action.

Tamar Stephens

8/28/1998

Meeting or Teleconference Held

Public meeting in Teller. Corps of Engineers discussed plans for further investigation and cleanup at Davidson's Landing.

Tamar Stephens

12/15/1998

Update or Other Action

Reviewed draft Field Investigation Report to support a removal action for petroleum contaminated soil at former biovents and landfarm.

Tamar Stephens

12/22/1998

Meeting or Teleconference Held

Review conference with Corps of Engineers on Field Investigation Report.

Tamar Stephens

12/30/1998

Update or Other Action

ADEC peer review to evaluate proposed soil cleanup levels for removal action.

Tamar Stephens

2/9/1999

Update or Other Action

Reviewed draft EE/CA (Engineering evaluation / cost analysis) for proposed removal action at former biovents and landfarm.

Tamar Stephens

4/5/1999

Update or Other Action

Reviewed, concurred with Environmental Assessment that proposed removal action at former biovents and landfarm would not significantly affect the environment.

Tamar Stephens

4/26/2000

Update or Other Action

Review of draft Work Plan for Davidson’s Landing by Tamar Stephens. Additional information requested. Action added by Sarah Riddle.

Tamar Stephens

6/27/2000

Update or Other Action

Contacted Tamar Stephens and asked if she knew anything about the Landowner of this site. She said that the owner died and property transfer to heir not settled yet. She said that she would contact me when new information was available.

Former Staff

10/2/2003

Interim Removal Action Approved

Reviewed and approved final closure report for removal of petroleum contaminated soil. Report describes excavation and removal of approximately 15-cubic yards of petroleum-contaminated soil at a former biovent location at Davidson’s Landing. Work was performed in summer of 2000, but DEC did not receive report until Sept. 2003. The biovent, located adjacent to an un-named slough off of the Kaviruk River, was in operation during a cleanup action during 1994 through 1996 and was designated as Biovent #1. Elevated levels of diesel and residual range organics remained in Biovent #1 soil at the end of 1996 cleanup activities. During the 2000 removal action, the soil was excavated to permafrost, a depth of three to four feet, and transported off site for treatment and disposal. Confirmation sampling showed maximum levels of 23 mg/kg diesel range organics and 89 mg/kg residual range organics at the bottom of the excavation. Benzene, toluene, ethylbenzene, xylenes, and semivolatile organic compounds were not detected. Based on this information, no further cleanup is required at the Biovent #1 location

Tamar Stephens

12/8/2003

GIS Position Updated

Used file to find approximate location of site. Good site map was unavailable.

Torsten Ernst

12/16/2005

Update or Other Action

Telephone conversation with Corps of Engineers project manager: intent is to write a decision document to close out the site as soon as funding is available.

Tamar Stephens

3/28/2008

Exposure Tracking Model Ranking

Initial ranking with ETM completed.

Tamar Stephens

7/14/2008

Site Characterization Workplan Approved

Approved work plan to conduct confirmation sampling at two locations, former Biovent No. 2 and a former landfarm area, where the Corps of Engineers conducted treatment of petroleum-contaminated soil during 1994-1996; to assess for the presence of 55-gallon drums in the un-named slough,;and collect surface water and sediment samples in the slough.

Tamar Stephens

10/3/2008

Document, Report, or Work plan Review - other

Reviewed draft Davidson’s Landing Formerly Used Defense Site Remedial Action Technical Memorandum and sent comment letter.

Tamar Stephens

4/14/2009

Document, Report, or Work plan Review - other

Reviewed and sent approval letter for Underwater Debris Survey Work Plan. In response to past reports of drums in the slough, the Corps of Engineers will conduct and underwater survey of the slough with an undewater video camera to determine the presence of 55 gallon drums or other metallic debris. Field work is scheduled for late August, 2009.

Tamar Stephens

2/9/2010

Document, Report, or Work plan Review - other

Reviewed draft Underwater Debris Survey Report and sent comments letter.

Tamar Stephens

12/2/2011

Document, Report, or Work plan Review - other

Reviewed and sent approval letter for final Underwater Debris Survey Report. Concurred with report recommendation to remove drum fragments found in slough and remove four intact drums found in vegetation near shoreline.

Tamar Stephens

12/2/2011

Document, Report, or Work plan Review - other

Reviewed and sent approval letter for final Remedial Action Technical Memorandum. The report presents the results of sampling in 2008 of former Biovent No. 2 and the former Landfarm where petroleum contaminated soil was treated during a 1994 through 1996 cleanup at the site. The report also presents results of sediment and surface water sampling of the slough. Concur with report conclusions that no further cleanup is needed at Biovent No. 2 or at the Landfarm. Concur that sample results show no violations of Alaska Water Quality Standards of the slough. (Field work was conducted in 2008, but final report was sent to DEC in November 2011.)

Tamar Stephens

2/11/2013

CERCLA Proposed Plan

DEC approved the Corps of Engineers Proposed Plan for Davidson's Landing. The plan calls for removal and off-site disposal of the remaining 55-gallon drums or partial drums and petroleum contaminated soil that is along the west bank of an unnamed slough. The Corps scheduled a public meeting on the Proposed Plan for February 13, 2013.

John Halverson

7/3/2013

Update or Other Action

DEC reviewed and commented on a draft decision document that calls for removal of drums (intact and partial, some of which are submerged in a slough)and petroleum contaminated soil (estimated to be ~ 5 cubic yards in volume) from the site. Several recommendations/clarifications were requested.

John Halverson

1/2/2014

Update or Other Action

Site transferred from Shepard to Savage

Rebecca Bryan

2/4/2014

Update or Other Action

Recieved Draft 2014 Removal Action Work Plan,Davidson's Landing FUDS. Proposed for the 2014 field season is the removal and disposal of 4-5 drums from within the Unnamed Slough, 4 drums from the west bank of the slough and any associated contaminated soil. Fluids from the drums will also be collected and analyzed.

Meredith Savage

4/4/2014

Document, Report, or Work plan Review - other

April 4, 2014- ADEC provided comments on Work Plan and asked for the addition of sediment sampling around the submerged drums if a hydrocarbon sheen is observed during removal.

Meredith Savage

5/23/2014

Update or Other Action

Draft Addendum One to the Removal Action Work Plan received; the work plan addendum covered sediment sampling activity to be conducted if a hydrocarbon sheen is observed during drum removal from the slough at the Davidson's landing site.

Meredith Savage

6/4/2014

Document, Report, or Work plan Review - other

Removal Action Work Plan accepted as final.

Meredith Savage

6/17/2014

Update or Other Action

ADEC requests that sediment samples be analyzed for Semi Volatile Organic Compounds (SVOCs) metals, and Polychlorinated Biphenyls (PCBs).

Meredith Savage

6/30/2014

Update or Other Action

After discussion with RP/RP contractor, ADEC amends comments letter regarding the draft Addendum One to the Removal Action Work Plan to request that sediment samples be taken from within or around the drums regardless of presence or absence of a hydrocarbon sheen; sample analyses should include DRO, RRO, BTEX, PAH, metals, and PCB.

Meredith Savage

7/17/2014

Update or Other Action

Final Addendum One to the Removal Action Work Plan received; work plan addendum includes the requested sediment sampling and sampling analysis.

Meredith Savage

8/4/2014

Document, Report, or Work plan Review - other

Final approval given for Addendum One to the Removal Action Work Plan.

Meredith Savage

10/2/2014

Update or Other Action

Received draft report titled 'Removal Action Report, Davidson's Landing.'

Meredith Savage

10/24/2014

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 72131 Davidsons Landing.

Meredith Savage

12/23/2014

Document, Report, or Work plan Review - other

ADEC received a report titled Final Removal Action Report – Davidson’s Landing FUDS, Alaska, on December 11, 2014. This report addresses actions taken to remove partially buried drums from the site known as Davidson’s Landing. Five drums were removed from a small slough draining into the larger Unnamed Slough that bisects the site and additional drum parts were removed from the Unnamed Slough. Two more drums were found on land along the west bank of the Unnamed Slough. None of the drums were intact enough to hold fluids. Soil or sediment samples were collected from directly beneath each drum or drum carcass and analyzed for diesel range organics (DRO), residual range organics (RRO), polycyclic aromatic hydrocarbons (PAHs), metals, polychlorinated biphenyls (PCBs), and benzene, toluene, ethylbenzene, and xylene, (BTEX). All results were below applicable action levels. Impacts were minimal and site restoration was not required. ADEC has reviewed this report, finds that it adequately meets the applicable requirements of 18 AAC 75.340, .355, and .360, and accepts it as final. Remedial action at this site has fulfilled the requirements laid out in the September 2013 Decision Document and the site is ready for closure.

Meredith Savage

12/29/2014

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 72131 Davidsons Landing.

Meredith Savage

6/19/2015

Institutional Control Record Removed

Institutional Controls have been removed.

Meredith Savage

6/19/2015

Cleanup Complete Determination Issued

The Alaska Department of Environmental Conservation has completed a review of the environmental records associated with the Davidson's Landing Site. Based on the review a Cleanup Complete determination has been issued. No further remedial action is required at this site.

Meredith Savage

Contaminant Information

Name	Level Description	Media	Comments
DRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil	DRO with concentrations of 530 to 1060 mg/kg remains in a small area of sediment (approximately 30' x 15')on the west edge of the Unnamed Slough. These concentrations are greater than Table B2 Method Two Under 40" Zone Migration to Groundwater cleanup levels, but less than Inhalation and Ingestion cleanup levels. An updated Conceptual Site Model shows that there is low risk to no risk at the site. (Note: Sediment is the impacted media. "Soil" was selected as the Impacted Media because a selection had to be made to complete this form and "Sediment" was not provided as an option.

Name

Level Description

Media

Comments

DRO

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

Soil

DRO with concentrations of 530 to 1060 mg/kg remains in a small area of sediment (approximately 30' x 15')on the west edge of the Unnamed Slough. These concentrations are greater than Table B2 Method Two Under 40" Zone Migration to Groundwater cleanup levels, but less than Inhalation and Ingestion cleanup levels. An updated Conceptual Site Model shows that there is low risk to no risk at the site. (Note: Sediment is the impacted media. "Soil" was selected as the Impacted Media because a selection had to be made to complete this form and "Sediment" was not provided as an option.

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)

Davidson's Landing Site Closure Letter

2013 Decision Document - Davidson's Landing

No associated sites were found.

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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Site Report: Davidson's Landing / DERP/ Site 8

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Davidson's Landing Site Closure Letter

2013 Decision Document - Davidson's Landing

Missing Location Data

State of Alaska Department of Environmental Conservation