| Action Date |
Action |
Description |
DEC Staff |
| 11/18/1999 |
Site Added to Database |
Petroleum. |
David Pikul |
| 11/30/1999 |
Site Ranked Using the AHRM |
Not previously ranked. |
David Pikul |
| 5/9/2001 |
Update or Other Action |
Interim Removal Action and Site Characterization workplan received from Shannon and Wilson. |
Beatrice Egbejimba |
| 5/11/2001 |
Interim Removal Action Approved |
Letter sent to Shannon and Wilson with the approval of plan in letter dated May 9, 2001 |
Beatrice Egbejimba |
| 11/1/2002 |
Site Characterization Report Approved |
Letter sent to Ron Stroman of ADOT with approval of Site Characterization report in accordance with 18 AAC 75.335 (d) and ADEC’s recommendation on future cleanup activities at the site. These include excavation of impacted soil from the 2000-gallon heating oil UST area and additional groundwater monitoring to document contaminant concentration trends. |
Beatrice Egbejimba |
| 8/14/2003 |
Update or Other Action |
ADEC received work plan for groundwater sampling. |
Beatrice Egbejimba |
| 8/18/2003 |
Update or Other Action |
ADEC sent letter to Ron Stroman of ADOT&PF with approval of groundwater monitoring plan. The plan proposes to sample the three existing monitoring wells (MW1, MW2, and MW3) for gasoline-range organics (GRO), diesel-range organics (DRO), and total benzene, toluene, ethylbenzene, and xylenes (BTEX). |
Beatrice Egbejimba |
| 10/10/2003 |
Update or Other Action |
Groundwater Sampling results received. |
Beatrice Egbejimba |
| 11/13/2003 |
Meeting or Teleconference Held |
ADEC met with Ron Stroman of ADOT and Dan McMahon of Shannon & Wilson to discuss several MarkAir sites. The out come of the meeting are as follows:
1. MarkAir Nome – ADOT proposed to undertake soil/groundwater investigation at the site with a $15,000 tank removal aid from ADEC. ADEC will seek CIP funds for the tank removal expense.
2. MarkAir Dillingham – ADOT proposed to undertake soil/groundwater investigation at the site with a $12,000 tank removal aid from ADEC. ADEC will seek CIP funds for the tank removal expense.
3. King Salmon – DEC Drinking water program will be provided with information on the on-site drinking water well. Details of groundwater impact will be provided. An increase from 0.5629 mg/L DRO to 1.4 mg/L DRO has been recorded.
Also ADOT lessee (AIDA) will be contacted. The contact person for AIDA is Jim McMillan. Ron Stroman will provide ADEC with contact information for AIDA. AIDA has leased this property to Brisol Bay Borough and Alaska Airlines. Both parties will be informed about the impacted drinking water well by DEC (CS program or Drinking water program).
4. MarkAir Barrow – Dan McMahon will provide a workplan addressing concerns presented in ADEC’s November 2003 letter regarding Bioremediation project. It was agreed that suprapermafrost groundwater issues will not be investigated at this time. |
Beatrice Egbejimba |
| 4/14/2004 |
Update or Other Action |
ADEC sent letter to Ron Stroman of ADOT with information regarding the Tank Closure and Groundwater Sampling Workplan received April 13, 2004. The workplan proposes to decommission a 2,000-gallon heating oil UST, excavate and transport approximately 150 cubic yards of potentially impacted soil to storage cell, reconfigured storage cell to serve as a passive bioremediation cell and monitor groundwater. One monitoring well will be destroyed during the tank closure process but it will be replaced and sampled along with two other monitoring wells. The off-site treatment facility was granted conditional approval. Inspection and maintenance of the contaminated soil stockpile regularly to ensure that the cover remains in-tact and that the soil and any liquid leachate derived from the soil is contained was one of the conditions. |
Beatrice Egbejimba |
| 4/16/2004 |
Update or Other Action |
File number assigned: 400.38.005. |
Sarah Cunningham |
| 6/21/2004 |
Meeting or Teleconference Held |
ADEC met with Ron Stroman of ADOT and Dan McMahon of Shannon & Wilson to discuss long term remedial plans for the various Mark Air sites. Specifically, the possibility of land spreading impacted soil on ADOT&PF owned airport parcels in Dillingham, Nome, Kodiak, Kotzebue and King Salmon. ADEC had no objections to this plan however Jim Frechione (Environmental Conservation Manager) stressed the need to prevent run-on and run-off during the remediation process. Land spreading is currently being used to remediate soils at the Aniak Airport. |
Beatrice Egbejimba |
| 11/15/2004 |
Update or Other Action |
Staff completed review of the document titled: Underground Storage Tank Closure Assessment Lot 2, Block 11 Nome Airport, Alaska dated October 2004. |
David Pikul |
| 11/17/2004 |
Meeting or Teleconference Held |
DEC staff attended a meeting with Ron Stroman ADOT and S&W to discuss future site activities. |
David Pikul |
| 6/6/2005 |
Site Characterization Workplan Approved |
The State of Alaska Department of Environmental Conservation, Contaminated Sites Program, (DEC), has completed review of the document titled: “Additional Site Characterization, Former MarkAir Facility, Nome Airport, Alaska” dated May 16, 2005 prepared by Shannon & Wilson. The project will consist of advancing four soil borings, installing four groundwater monitoring wells, collecting soil and groundwater samples, and preparing a summary report. The work plan is approved. |
David Pikul |
| 6/21/2007 |
Update or Other Action |
Site transferred from Pikul to Oelkers. |
Shannon Oelkers |
| 7/18/2007 |
Update or Other Action |
Conceptual site model (CSM) received. Identified Receptors: commercial workers, trespassers, and site visitors. Exposure pathways considered complete: incidental soil ingestion, dermal absorption of contamninats from soil, inhalation of outdoor air, indoor air inhalation, dermal exposure to groundwater. Many of these pathways would only be completed during construction or excavation. |
Shannon Oelkers |
| 7/27/2007 |
Update or Other Action |
Site transferred from Oelkers to O'Connell. |
Shannon Oelkers |
| 10/15/2007 |
Exposure Tracking Model Ranking |
Intial site ranking |
Grant Lidren |
| 3/23/2009 |
Meeting or Teleconference Held |
ADEC staff met with DOT to discuss additional actions that are needed on site. ADEC recommended that monitoring wells are gauged on a monthly basis to determine groundwater flow direction and seasonal changes. ADEC also recommends VOC's analysis in groundwater samples ( particularly searching for the presence of PCE found in the floor drains). ADEC requested an update on the status of the stockpile created with contaminated soils from this lot. |
Tamara Cardona-Marek |
| 3/23/2009 |
Update or Other Action |
Lot 1 Block 3 has been separated from this site and a new site has been created for it (Evergreen Helicopters). |
Tamara Cardona-Marek |
| 12/29/2010 |
Update or Other Action |
Communication with DOT in 2009 indicates that there are no drinking water wells on airport property and that the soil stockpile at the National Guard was mixed with gravel and used as road bed material on a road project. The former soil storage area is used as a snow dump. |
Tamara Cardona-Marek |
| 12/29/2010 |
Update or Other Action |
ETM ranking updated. Requests for status of monitoring wells has been sent to airport manager. |
Tamara Cardona-Marek |
| 1/4/2011 |
Update or Other Action |
Nome airport manager indicated that two of the wells were still at the site prior to the winter. However, he does not know the condition of these wells. He is available to check the status of the wells after breakup. |
Tamara Cardona-Marek |
| 12/27/2011 |
Document, Report, or Work plan Review - other |
DEC received from SLR the 2011 Groundwater Monitoring Report. Hydrocarbon concentrations in wells MW3, MW7 and MW11 appear to be decreasing over time. Concentrations in MW4 appear to be increasing over time. Wells MW5 and MW8 could not be sampled since they had minimal water. SLR recommends repairing flush mounts for wells MW4, MW7, MW10 and MW11. They also recommend decommissioning wells MW4, MW5 and MW8 if no water can be collected from them. DRO was the only contaminant exceeding cleanup levels (up to 2.13 ppm) on the limited number of wells sampled. |
Tamara Cardona-Marek |
| 6/20/2013 |
Update or Other Action |
Project manager changed to Robert Burgess. CIP narrative updated for FY15. |
Janice Wiegers |
| 7/24/2013 |
Update or Other Action |
DEC project manager conducted a review of the file to identify data gaps. According to past reports (c. 2006, 2011), groundwater at the site may exist as a localized "thaw bulb" around the building, and is likely not hydraulically connected to other groundwater in the area. However, additional data should be gathered to make this determination more conclusive.
2011 reports indicate that 5 of 9 monitoring wells were either not found, were damaged, or contained too little water to sample. Past sampling events were unable to completely delineate the plume to the south, and groundwater gradients are inconsistent between monitoring events. Some monitoring wells are regularly frozen or dry in the spring and summer (through July). Inspection and repair or replacement of wells should take place in August or September, followed by sampling of all wells for GRO, DRO, and BTEX. Additional wells may be needed to delineate the plume. Additional soil borings should be completed to evaluate soil impacts, especially in the vicinity of the former tanks. Soil and permafrost surveys may be necessary to confirm contamination is contained to a thaw bulb. No immediate risk is apparent at this site, however the work described above should take place before site closure is possible. |
Robert Burgess |
| 9/11/2013 |
Site Visit |
DEC project manager visited site to observe site layout and conditions of monitoring wells. All wells have frost jacked are are sticking out of paved surfaces a few inches, with one exception. Three of five wells did not have a monument and two of these had no cover. One had been broken. The manager of the Nome airport stated that the area is going to be repaved next year and it is likely that the monitoring wells will be lost during the paving. |
Robert Burgess |
| 9/17/2013 |
Update or Other Action |
Site symbol visually adjusted using ArcGIS and documents from the file. 64.507473,
-165.440016. 9/17/13; MLB. |
Michelle Barnes |
| 11/5/2013 |
Update or Other Action |
After discussing the condition of the wells with ADOT&PF, DEC received notice that the wells will be protected during repaving of the airport apron, and that the wells that had been missing plugs received new plugs. |
Robert Burgess |
| 9/14/2015 |
Site Visit |
DEC project manager viewed the site briefly during a visit to Nome. Repaving had occurred as expected; wells inside the airport security fence could not be seen and it is unclear if they were protected during repaving work. |
Robert Burgess |
| 5/25/2016 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 73915 Airport. |
Robert Burgess |
| 5/20/2021 |
Update or Other Action |
Site characterization work completed for the Nome Airport Sitewide PFAS (File #400.38.056) site identified concentrations of PFAS constituents above ADEC cleanup levels in the vicinity of the MarkAir - Nome site. Investigation derived waste that is generated during work at the MarkAir - Nome site should be characterized for PFAS contamination. |
Rebekah Reams |
