| Action Date |
Action |
Description |
DEC Staff |
| 7/14/1992 |
Notice of Violation |
Notice of release letter sent. Release of petroleum contamination was identified in the soil and a sewer line adjacent to an underground storage tank system. Requested tank tightness test be done, site assessment/release investigation, and water well survey. |
John Halverson |
| 7/20/1992 |
Update or Other Action |
The Jet A pipeline failed tightness test - not a regulated UST or part of regulated UST. |
John Halverson |
| 8/10/1992 |
Update or Other Action |
Sent a letter requesting for a Site Assessment/ Release Investigation and Water Well Survey. The Assessment for the regulated UST and unregulated tank farm could be submitted together. |
John Halverson |
| 1/4/1993 |
Update or Other Action |
Sent second letter requesting the information requested in the ADEC letter dated 8-10-92. |
John Halverson |
| 2/16/1993 |
Update or Other Action |
Sent letter requesting the Water Well Inventory and Release Investigation. |
John Halverson |
| 6/11/1993 |
Update or Other Action |
Sent a Warning Letter requesting a complete Release Investigation and Initiate Corrective Action by 7-23-93 that would include a qualified, impartial third party to collect well water samples, have samples analyzed in accordance with EPA method 503.1, submit a complete Release Investigation Report including a Site Assessment/Release Investigation, and a meeting with ADEC staff by June 25, 1993. |
John Halverson |
| 7/1/1993 |
Update or Other Action |
July 1993 Phase II site assessment conducted by EMI (received at ADEC on 12/9/93) consisted of elevation survey of public drinking water wells within 1/4 mile, water well inventory within the same radius including recording depth of completion and water sample collection, removal of a 2,000-gallon UST and contaminated soil (limited by underground utilities and aboveground structures), soil borings advanced and 3 MW installed and sampled. Confirmation samples contained 9,700 mg/kg GRO, 21,000 mg/kg DRO, and 2,700 mg/kg BTEX. Soil borings identified a clay confining layer and an upper and lower aquifer. MW-1 and MW-2 were completed in the lower aquifer at 30 ft bgs and MW-3 in the upper aquifer was screened from 5 to 21 ft bgs. These wells did not contain concentrations of concern by July 1994 after quarterly sampling was conducted. The contamination identified in this SA appears to have been addressed during 2001 IRA and SC performed by S&W (Excavations 2 and 4). |
Keather McLoone |
| 2/11/1994 |
Meeting or Teleconference Held |
Sent a follow-up letter after a meeting with MarkAir on January 28, 1994 to discuss possible remediation alternatives, the next sampling event, sampling of the abandoned well in the corner of the MarkAir lot, and that the other tenants adjacent to MarkAir be informed of the work to be done. |
Kent Patrick-Riley |
| 6/24/1994 |
Meeting or Teleconference Held |
Sent a summary of the meeting between MarkAir, John Simmons, EMI, and ADEC. |
Vic Vickaryous |
| 10/24/1994 |
Update or Other Action |
Sent a letter as follow-up that the stock pile had been covered, but concerned that the cleanup progress was moving too slowly. |
Ray Dronenburg |
| 8/11/1995 |
Update or Other Action |
Received a Phase II Site Characterization and Rough Order of Magnitude Remediation and Cost Estimate by Dames and Moore. This report identified a 500-gallon Jet-A "heating" fuel AST (1970s release) and a Jet-A dispenser (1990s spills) located on Block 10 as well as the pipeline between Blocks 10 and 20 as potential sources of contamination. This report also suggested that MW-2 and MW-3 may have been acting as conduits for contamination to migrate to the groundwater because they were screened nearly to the surface, with less than one ft of seal to prevent migration of contaminants into the well. (1996 ESA by S&W shows these wells as covered by surface water. MW-3 was decommissioned during 2001 efforts by S&W. MW-2 was decommissioned by S&W in 1996.)
No subsurface soil samples collected but observations of the surface soil were made noted staining. |
Keather McLoone |
| 9/27/1995 |
Update or Other Action |
Received a trip report from Anna Walker from DOT that on Lot 11 Block 10 contaminated soil stockpile was uncovered, electrical cable on fueling system was spliced, on the fuel storage lot; dikes insufficient and unlined. No fuel designation sign, no (No Smoking) signs, no fire extinguishers, and on Lot 12A Block 10 the grounding wire on AVGAS 100LL fueling system held on with duct tape. |
Ray Dronenburg |
| 12/2/1996 |
Update or Other Action |
Received an Environmental Site Assessment ADOT&PF MarkAir Terminal Aniak, AK from Shannon and Wilson. 13 Soil borings were advanced and MW-4 and MW-5 were installed. Borings advanced in the area of the former AvGas tank and dispenser area contained petroleum concentrations above Method Two criteria (these areas were addressed during 2001 excavations). Concentrations were also above cleanup criteria up to 1,200 mg/kg GRO, 13,000 mg/kg DRO, and 15 mg/kg toluene in borings advanced on the paved apron area that were not addressed in 2001 excavations. Groundwater samples collected from MW-4 and MW-5 contained detectable levels of petroleum constituents below groundwater cleanup levels.
The stockpile created during the 1993 UST removal was also sampled and contained up to 260 mg/kg DRO. According to the 2006 site summary by S&W, this stockpile was reported by ADOT to have been removed prior to 1999 and its final disposition unknown. |
Keather McLoone |
| 10/5/1998 |
Update or Other Action |
Received a Site Assessment Work Plan ADOT&PF Sites, Aniak from Shannon and Wilson. |
Former Staff |
| 9/13/1999 |
Update or Other Action |
HartCrowser submitted a corrective action plan on behalf of ADOT&PF. |
Shah Alam |
| 10/12/1999 |
Update or Other Action |
Staff commented on a corrective action plan submitted by HartCrowser. Staff could not approve a corrective action workplan considering groundwater cleanup level ten times that of Table C. Cleanup plans at nearby sites considered groundwater as drinking water source. |
Shah Alam |
| 3/1/2000 |
Update or Other Action |
Sent a Memorandum to Dan Breeden after reviewing the Corrective Action Plan Former MarkAir Terminal Aniak Airport Dated February 14, 2000 from HartCrowser and approved it as a scope of work, but not as a corrective action plan. |
David Pikul |
| 3/5/2001 |
Update or Other Action |
Interim removal action and site characterization plan received. |
Beatrice Egbejimba |
| 5/1/2001 |
Interim Removal Action Approved |
Approval letter sent to Stafford Glashan of Shannon and Wilson. |
Beatrice Egbejimba |
| 6/8/2001 |
Update or Other Action |
Modification to 3/5/01 Interim Removal Action and Site Characterization Workplan received. |
Beatrice Egbejimba |
| 6/14/2001 |
Interim Removal Action Approved |
Approved the Interim Removal Action Plan dated June 8, 2001 from Shannon and Wilson. |
Beatrice Egbejimba |
| 8/2/2001 |
Meeting or Teleconference Held |
Meeting held to discuss Site Characterization workplan submitted today. Present at the meeting were representatives from ADEC, ADOT and Shannon and Wilson. |
Beatrice Egbejimba |
| 8/7/2001 |
Site Characterization Workplan Approved |
Approval letter sent to Stafford Glashan of Shannon and Wilson. |
Beatrice Egbejimba |
| 5/3/2002 |
Update or Other Action |
Date of receipt Interim Removal and Site Characterization Report Volumes 1 and 2. Leachability Assessment submitted under separate cover. All three volumes have an "authored" date of January 2002. Activities reported in this document include excavation and construction of long-term storage cells (stockpiles), pipeline decommissioning, advancement of soil borings, well installation, well sampling, well decommissioning, drum cauterization, and an assessment of the former terminal building area.
Six excavations including a pipeline excavation were advanced. The pipeline excavation was to a max depth of about 3.5 feet and the others had max depths ranging from 11 to 25 ft bgs and confirmation samples were collected. Concentrations remaining in these excavated areas up to 1,740 mg/kg GRO, 16,700 mg/kg DRO, 0.787 mg/kg benzene, 60.8 mg/kg toluene, 28.8 mg/kg ethylbenzene, and 360 mg/kg xylenes. Overburden material used to backfill, along with imported fill, contained up to 0.132 mg/kg benzene.
Baseline samples were collected before soil was stockpiled. The one soil sample collected below former Cell 1B and from a stained area, in the southern corner of the cleared portion of Block 20, contained 18,000 mg/kg RRO. The one soil sample collected from below Cell 1, which was in the eastern corner of this same area, contained 426 mg/kg GRO and 0.753 mg/kg benzene. One of two samples collected from below Cell 4 contained 472 mg/kg DRO, 3,370 mg/kg GRO, and 0.0809 mg/kg benzene. The location of Cells 4, 4B, and 5 is not well documented but may have been near the northwest corner of the school's fenced area. The site summary reported by S&W in 2006 states that these cells were located "adjacent to a former fuel tank farm with documented impacted soil".
The storage cells were also sampled. The soil stockpiled at Block 20 contained up to 6,990 mg/kg DRO, 1,010 mg/kg GRO, 2.86 mg/kg benzene, 161 mg/kg toluene, and 17.7 mg/kg ethylbenzene. Soil stockpiled closer to the runway and school area contained up to 11,200 mg/kg DRO, 1,190 mg/kg GRO, 4.58 mg/kg benzene, 12.5 mg/kg toluene, and 12.0 mg/kg ethylbenzene.
Pipeline decommissioning was reported to have included cleaning pipe left in place but it is not clear what this involved.
After excavation activities were completed, 15 soil borings were advanced and seven completed as monitoring wells designated as MW-6 thru MW-12. Soil samples collected from these borings contained GRO, DRO, benzene and toluene above Method Two migration to groundwater cleanup levels.
A total of 28 55-gallon drums and 4 ASTs were observed at the time of this effort. Eighteen or 19 drums containing "product" or "fuel, impacted water, or miscellaneous chemicals" (variously reported) were placed in a lined drum storage cell. The four empty ASTs were placed adjacent to this drum storage cell which was located east of the former tank farm area on Block 20.
Well decommissioning included a drinking water well and MW-1 and MW-3.
The assessment inside the former terminal building included 2 soil samples which contained up to 362 mg/kg DRO. Two floor drains were identified with unknown discharge points.
Leachability Assessment included SESOIL modeling of GRO, DRO, and benzene at this site. The results of this modeling show that DRO would not impact the site's groundwater and that benzene greater than 0.8 mg/kg and GRO greater than 1,275 mg/kg but was qualified by the following: 1) "soil permeability varies considerably among layers - SESOIL may not be accurate for such an inhomogeneous column". 2) "The second concern is that some of the modeled results contradict documented site conditions". |
Keather McLoone |
| 8/20/2002 |
Update or Other Action |
Approved the Work Plan for Groundwater sampling dated August 20, 2002 from Shannon and Wilson. |
Beatrice Egbejimba |
| 11/1/2002 |
Update or Other Action |
Received September 2002 Groundwater Sampling report for samples collected at MarkAir facility. |
Beatrice Egbejimba |
| 4/14/2004 |
Update or Other Action |
Received March 2004 groundwater monitoring report. Sampling effort included sampling at 5 ADOT&PF Aniak Airport Sites. The MWs at the former Mark Air facility were not accessible due to snow and ice and were not sampled. |
Donald Seagren |
| 5/17/2004 |
Update or Other Action |
Reviewed and approved work plan for land spreading approximately 5,080 cubic yards of contaminated soil that was excavated from the former Mark Air Aniak facility along the Aniak Airport runway. |
David Pikul |
| 6/28/2004 |
Update or Other Action |
Date of receipt of Soil Treatment by Land Spreading report. Approximately 5,080 cubic yds of contaminated soil that was excavated from the former Mark Air Facility in 2001, was landspread along the southern Aniak Airport runway for treatment in an area about 225 feet by 755 feet. The former stockpiles had been located at both Block 20 and at the "Airport Runway" site. The storage cell liners were cleaned and disposed of in the Aniak Landfill. The landspread material was in a lift less than 1 foot thick and did not exceed the height of the runway. Samples were not collected. |
David Pikul |
| 6/30/2004 |
Site Characterization Report Approved |
March 2004 Groundwater Monitoring report for various ADOT&F sites including MarkAir. Due to snow and ice conditions, the MarkAir wells were not sampled during this event. MW 5 - MW8 have not contained concentrations of DRO, GRO and BTEX exceeding ADEC cleanup levels. These MWs are recommended to be abandoned. These are located in the paved area of the site. MA(MarkAir)-MW9 and its duplicate exceeded for DRO and benzene. It is recommended to continue monitoring of MA-MW9 - MA-MW12. These MWs are located near ASTs. |
Donald Seagren |
| 7/8/2004 |
Meeting or Teleconference Held |
DEC met with ADOT&PF and their contractor to discuss next phase of site work. |
David Pikul |
| 9/23/2005 |
Update or Other Action |
File number updated 2404.38.010. |
Aggie Blandford |
| 6/30/2006 |
Site Characterization Report Approved |
Date of receipt of May 2006 Groundwater Monitoring Report, MarkAir Facility. Samples collected from MW-7 to MW-12. DRO only constituent above Table C in just MW-12 at 1.98 mg/L. MW-5 and MW-6 were not sampled due to blockages in the well. Recommends decommission wells MW-5 thru MW-8. |
Bill O'Connell |
| 12/18/2006 |
Site Characterization Report Approved |
Date of site assessment summary report submitted by S&W. This report presents a summary of assessment activities that have been conducted at the former Mark Air facility in Aniak and provides recommendations for further actions. Recommendations include drum disposal at Lot 2A, Block 20 AND decommissioning of the 2 floor drains within the terminal building at Lots and 11, Block 10 AND collecting post treatment samples from the land spread area. |
Keather McLoone |
| 1/17/2007 |
Update or Other Action |
Date of S&W's Conceptual Site Model, Lots 10 & 11, Block 10 & Lot 2A, Block 20, Aniak Airport. Impacted soil & GW is present in the vicinity of the former bulk fueling facility on Lot 2A, Block 20 & the former AvGas UST and fuel dispensers on Lots 10 & 11, Block 10. S&W excavated 5,100 cubic yds of contaminated soil from the facility and landspread on airport property in 2004. The majority of the on-site source areas have been removed, preventing future impact to the GW. Current completed pathways include Ingestion (soil & GW) & inhalation (indoor & outdoor). Potential future completed pathways include ingestion (soil) and Indoor air inhalation. |
Donald Seagren |
| 4/14/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Donald Seagren |
| 6/16/2009 |
Update or Other Action |
CSP was notified by VSW that their contractor (KAE) encountered contaminated soil with an odor near the former MarkAir facility. They then attempted to dig to get an idea of the extent of visibly contaminated soil and provided a sketch made on the plan and profile for the sewer expansion. The reportedly "assumed to have been abandoned in place" pipeline connecting the 2 former MarkAir portions of the facility (on opposites sides of the airport access road) was encountered and reported to have ..."“drops of fuel” in it. It was empty for all practical purposes and had some residual liquid in it. The pipe was buried 2 feet deep and what was in the trench was removed. Since we stopped work there is still some pipe in the ground but it is not actively leaking." CSP requested the contractor submit a Contaminated Soil Management Plan. VSW is working with ADOT to get their approval to place a contaminated soil stockpile on their property. CSP suggested that the stockpile be located at one of the 2 former MarkAir facility locations. |
Keather McLoone |
| 8/10/2009 |
Update or Other Action |
VSW collected 10 soil samples for GRO/BTEX/DRO/PAH/lead analyses from the 700 cubic yards of excavated, stockpiled soil (the original estimated soil volume to be removed was 1000 cubic yards). The stockpile was located on Block 20 in the southern corner of the cleared portion of the block. Concentrations of 1-methylnaphthalene and 2-methylnaphthalene exceeded most conservative Method Two most conservative criteria in one soil sample at 14 and 18 mg/kg respectively. DRO exceeded most conservative criteria in 6 of the ten samples up to 5,300 mg/kg. Seven samples exceeded benzene criteria up to 3.4 mg/kg. One sample exceeded toluene and ethylbenzene criteria at 240 and 28 mg/kg respectively. No significant data quality issues identified in review of information provided, which also included a sketch of sample locations from VSW. |
Keather McLoone |
| 12/9/2010 |
Update or Other Action |
A phone call with Village Safe Water (VSW) Program on this date regarding contaminated soil stockpiling as part of the VSW 2009 Aniak Sewer Project. A former pipeline from the MarkAir facility AST was discovered during the 2009 Sewer Project. The pipe was removed, but it was discovered that one of the fittings was loose. Five gallons of free product were removed from the pipe. Contaminated soil was also removed and stockpiled on Lot 2A, Block 20 along with other DOT historic stockpiles. Reportedly, gross amounts of contaminated soil from the leaky pipe remains. The extent of contamination needs to be evaluated. |
Grant Lidren |
| 12/29/2010 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 72537 name: Avgas AST & piping |
Grant Lidren |
| 9/29/2011 |
Site Visit |
On this date, ADEC traveled to Aniak to accompany S&W during their field effort for the CIP State-owned project ADOT Aniak Area-wide, take photographs, and to network with the DOT. |
Grant Lidren |
| 3/14/2012 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 72537 Avgas AST & piping. |
Grant Lidren |
| 4/25/2012 |
Site Characterization Report Approved |
On this date, ADEC received the Final Excavation and Land Spreading Report ADOT&PF Aniak Area-Wide submitted by S&W dated April 2012. The historic 2004 Markair contaminated soil land spread area at the airport was sampled and the 2009 village safe water stockpile located at Lot 2A Block 20 was transported to the land spread area adjacent to the runway. At the 2004 Land spread area, three 5-spot composite samples collected from the historic landspread area were below cleanup levels. At the 2009 VSW stockpile, VSW estimated the stockpile to be 700 cy, however 1,100 cy of soil was removed and land spread adjacent to the airport. During removal activities, another 100 to 300 cy stockpile of unknown origin was noted uncovered with vegetation growing on top. This stockpile was not sampled or moved. |
Grant Lidren |
| 6/3/2013 |
Update or Other Action |
On this date ADEC received the “WORK PLAN ADDENDUM TO CONDUCT ADDITIONAL ENVIRONMENTAL SERVICES AT ADOT&PF ANIAK AREA-WIDE SITES, ANIAK, ALASKA” submitted by S&W dated May 31, 2013. The ADOT&PF
will provide equipment, including a grader, dump truck, and front end loader, to conduct the
soil land spreading at the Airport. B.C. Excavating LLC (BCX), under subcontract to Shannon & Wilson will provide the personnel to operate the equipment. Sixteen soil samples will be collected after landpreading activities. Discovery drilling will decommission a total of 11 monitoring wells at the DOT Aniak City Shop, the DOT former AST area, the DOT Aniak runway apron, and at the former MarkAir Facility. Work is planned for middle of June. The project will be completed by June 30, 2013.
|
Grant Lidren |
| 7/1/2013 |
Update or Other Action |
On this date, ADEC received the Additional Environmental Services at ADOT&PF Aniak Area-Wide Sites submitted by S&W, dated June 28, 2013. At the MarkAir - Aniak Airport monitoring wells MW-5, MW-6, MW-7, and MW-8 were decommissioned. MW-4 was repaired during the visit. |
Grant Lidren |
| 10/30/2014 |
Update or Other Action |
In 2017, the DOT plans to shift the runway 260 feet south. During this time, land spread/land farmed soil could be encapsulated into the runway. ADEC plans to work with DOT to characterize these soil during the summer of 2015 to determine options. |
Grant Lidren |
| 10/23/2018 |
Site Visit |
ADEC visted site on this date. MarkAir Building still intact. the laydown yard gate across the street to the east was locked. |
Grant Lidren |
| 6/24/2020 |
Site Characterization Workplan Approved |
On this date, ADEC received the ANIAK AIRPORT RUNWAY SHIFT PROJECT AIP 3-02-0019-010-2017/Z528070000 CONTAMINATED SITE CHARACTERIZATION WORK PLAN ANIAK AIRPORT Tract 1, Parcel A, BLOCK 10, LOTS 11 AND 12A submitted by Travis and Peterson and dated June 2020. Both The former Mark Air Building and the former Inland Air Building will be demolished and removed as part of the Aniak runway realignment project. Potentially hazardous materials, such as 55-gallon drums in the buildings, will be properly disposed prior to removal work, which is planned for July 2020. |
Grant Lidren |
