Site Report: AIA Anchorage Airport Sitewide

Site Name:	AIA Anchorage Airport Sitewide
Address:	Anchorage Int'l Airport, Anchorage, AK 99502
File Number:	2100.38.028.05
Hazard ID:	3155
Status:	Informational
Staff:	Shawn Tisdell, 9074512752 shawn.tisdell@alaska.gov
Latitude:	61.176967
Longitude:	-149.989172
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

This informational database entry is designed to track general information at the Anchorage International Airport. It does not represent a site. Information tracked via this entry includes the Risk Management Plan, 18 AAC 350 groundwater use determination, and construction projects. It could also be used to capture general project information that may involve multiple contaminated sites or other areas within the Anchorage International Airport. Note that information for construction projects where soil is transported to the AIA (2100.38.028.03) or AFSC (2100.38.028.37) landspread areas should also be documented in those files.

Action Information

Action Date	Action	Description	DEC Staff
2/19/1998	Meeting or Teleconference Held	Presentation on RISK ZONES: On February 19th airport staff presented information to CRSP and STP staff and management on the Anchorage International Airport's plans for major expansion, and presented an overview of the airport's proposed plan for developing risk-based cleanup levels for zones within the airport boundaries. The zones would be identified based on exposure scenarios including receptors and site conditions (soils, depth to groundwater). The airport proposes to complete risk assessments that would be representative of each zone to streamline individual site cleanups.	Eileen Olson
12/22/1999	Site Added to Database	Diesel contamination widespread, some gasoline contamination present.	Eileen Olson
1/24/2000	Site Ranked Using the AHRM	Initial ranking.	Eileen Olson
5/9/2000	Site Ranked Using the AHRM	Changed GW Usage Value from 0.4 to 0.8.	Eileen Olson
12/6/2000	Update or Other Action	Approval of final comment responses for RA.	Renee Evans
1/10/2001	Update or Other Action	Letter to AIA generally agreeing with Risk Management approach.	Renee Evans
1/23/2001	Update or Other Action	Submittal of AIA Master Plan referred to in risk Management plans.	Renee Evans
3/27/2001	Update or Other Action	AIA Groundwater Use Determination.	Renee Evans
3/27/2001	Institutional Control Record Established	In accordance with 18 AAC 75.350, ADEC has determined that the unconfined groundwater (above the Bootlegger Cove Formation) at the Anchorage International Airport (AIA) is not a current or future drinking water source. This determination is subject to the following conditions: 1. It applies only within the Airside and Commercial RMZ’s, as described in the Airport-Wide Remediation Management Plan. It does not apply within the Ecological RMZ. 2. It does not establish alternative cleanup levels within those zones but allows ADEC to use the determination in making decisions in accordance with 18 AAC 75.345(b)(2) - (3). 3. Any drinking water wells located on AIA property must be properly abandoned in accordance with ADEC decommissioning procedures within two years of this decision. 4. AIA shall prohibit the installation of any water wells, used for drinking, cooling, washdown, or any other purposes, on the AIA either through 17 AAC 42.410 (b) (27) of the airport leasing regulations or in their individual lease agreement documents. 5. The existing AIA water well used to maintain the water level in Lake Hood is not considered a drinking water well. However, AIA is responsible for determining its wellhead protection area and ensuring that it maintains levels at or below 18 AAC 75.345 Table C values, unless otherwise approved by ADEC. March 19, 2007 Amendment: DEC has determined that the shallow groundwater along the Lake Hood shoreline is not a current or future drinking water source in accordance with 18 AAC 75.350. Therefore, the March 2001 groundwater use determination is amended to include the shallow groundwater in the Ecological RMZ in that determination.	Todd Blessing
6/4/2001	Meeting or Teleconference Held	Meeting at AIA regarding draft Airport Wide Risk Management Plan.	Renee Evans
6/19/2001	Update or Other Action	Draft workplan for Airport Wide Risk Management workplan received.	Renee Evans
7/9/2001	Risk Assessment Report Approved	Human Health Risk Assessment for Terminal/Ramp Area - Final Acceptance	Renee Evans
8/6/2001	Update or Other Action	Comments from term contractor - Oasis regarding draft Risk Management plan.	Renee Evans
12/18/2002	Proposed Plan	Approved Evaluation of Lake Hood Well Influence work plan.	Lynne Bush
12/23/2002	Proposed Plan	"Soil Landspreading and Remediation Agreement" between the AIA and DEC was signed by both parties. The landspreading plan is officially effective this date.	Lynne Bush
1/16/2003	Update or Other Action	Requested information on location and current condition of the pcs from the 30 Lake Hood USTs deposited at the landspreading area in the early 90s. If these soils can be segregated and sampled, the Department might be able to close the sites.	Lynne Bush
3/25/2003	Update or Other Action	Began installing monitoring wells this week for Lake Hood Well Survey.	Lynne Bush
4/12/2004	Update or Other Action	Approved of Airport's request to reuse contaminated soils for the South Terminal, North Taxi Lane Reconstruction Project: AKSAS project No. 57040	Todd Blessing
6/23/2004	Update or Other Action	AIA responded to ADEC's comments regarding the risk management plan- ADEC had no further comments. Risk managment plan should be finalized shortly.	Todd Blessing
8/23/2004	Update or Other Action	DEC approved of AIA Risk Management Plan on a site specific basis.	Todd Blessing
3/13/2008	Exposure Tracking Model On Hold		Todd Blessing
8/23/2011	Update or Other Action	DEC staff revieved a letter from Scott Lytle as a follow up to staff's September 6, 2007 letter. This letter extended the due date for removal of drinking water wells at AIA and rescinded our prior request for a long term AIA groundwater monitoring plan. Mr. Lytle's letter confirmed that drinking water wells in South Airpark have been removed in accordance with the approved Area-Wide Risk Base Cleanup Alternative Cleanup Levels. The wells were removed in May of 2010 and 2011.	Todd Blessing
6/13/2017	Document, Report, or Work plan Review - other	Reviewed Sampling Plan (Soil Management Plan) for Lake Hood Seaplane Base and Lakeshore Taxilane Reconstruction project. The plan outlined steps for the management of contaminated soil, if encountered, during construction and subsequent confirmation sampling.	Wendy Hansen
6/28/2018	Document, Report, or Work plan Review - other	Reviewed sampling plan for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc, and provided comments. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. A final project report will be submitted.	Wendy Hansen
7/3/2018	Document, Report, or Work plan Review - other	Reviewed sampling plan for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company, and provided comments. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. A final project report will be submitted.	Wendy Hansen
8/3/2018	Document, Report, or Work plan Review - other	Reviewed Rev.1 (August 2, 2018) and subsequently Rev.2 (August 3, 2018) to the work plan for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company, and provided additional comments.	Wendy Hansen
8/3/2018	Document, Report, or Work plan Review - other	Reviewed Rev.1 (August 1, 2018) and subsequently Rev.2 (August 3, 2018) to the work plan for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc, and provided additional comments.	Wendy Hansen
8/9/2018	Document, Report, or Work plan Review - other	DEC approved work plan for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc.	Wendy Hansen
8/9/2018	Document, Report, or Work plan Review - other	Staff received report for Lake Hood Seaplane Base and Lakeshore Taxiway Reconstruction project. During construction of the Seaplane Base West Ramp, GRO contamination was encountered adjacent to Lake Hood Air Harbor (ADEC File No. 2100.26.264; Hazard ID 23409). Approximately 20 cubic yards of soils were removed and taken to the AIA Landspread Area.	Wendy Hansen
8/14/2018	Document, Report, or Work plan Review - other	Reviewed and approved Rev.3 to the work plan for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company and provided clarification for BTEX maximum allowable for landspreading. This clarification was also provided for the Taxiway V reconstruction project.	Wendy Hansen
8/23/2018	Document, Report, or Work plan Review - other	Reviewed sampling plan for ANC Runway 15/33 Rehabilitation prepared by Tellus, Ltd. for QAP, and provided comments. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. A final project report will be submitted.	Wendy Hansen
3/11/2019	Document, Report, or Work plan Review - other	Staff reviewed and approved sampling analysis plan for ANC Miscellaneous Repairs and Fleet Fueling Facility Project CSAPT00199 written by Tellus for Roger Hickel Contracting, Inc (RHC). The project is the Fleet Fueling Facility area located along Taxiway V and near both the AIA Airfield Maintenance Facility and Menzies Aviation office. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area.	Wendy Hansen
4/5/2019	Document, Report, or Work plan Review - other	Approved of revised sampling plan for ANC Runway 15/33 Rehabilitation prepared by Tellus, Ltd. for QAP. Staff provided comments to the draft plan on August 23, 2018.	Wendy Hansen
4/18/2019	Document, Report, or Work plan Review - other	Approved sampling plan for ANC AIA Taxiway F Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified: To comply with bid specifications, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. Field screening and sampling will also be conducted to comply with ADEC field sampling guidance. A final project report will be submitted that identifies where contamination was found.	Wendy Hansen
6/3/2019	Document, Report, or Work plan Review - other	Staff reviewed and approved sampling analysis plan for AIA Gate N10 Tug Road Reconstruction project. The project area is located east of and adjacent to the AIA Field Maintenance Facility at AIA. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified: To comply with bid specifications, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. Field screening and sampling will also be conducted to comply with ADEC field sampling guidance. A final project report will be submitted that identifies where contamination was found.	Wendy Hansen
10/4/2019	Document, Report, or Work plan Review - other	Staff reviewed a report for the AIA Gate N10 Tug Road Reconstruction project. No contaminated soil was identified during implementation of this project.	Wendy Hansen
10/11/2019	Document, Report, or Work plan Review - other	Staff reviewed the report for ANC Miscellaneous Repairs and Fleet Fueling Facility Project written by Tellus for Roger Hickel Contracting, Inc (RHC). Approximately 5 cubic yards of contaminated soil was approved for transport to the AIA landspreading area on June 4, 2019. DRO was detected in the soil above cleanup levels at 1,400 mg/kg. No confirmation samples were collected after soil removal. This construction project was associated with Site AIA Tanks #19, 20, 21. File Number: 2100.26.596. Hazard ID: 26519.	Wendy Hansen
12/19/2019	Document, Report, or Work plan Review - other	Reviewed field summary report for ANC Runway 15/33 Rehabilitation prepared by Tellus, Ltd. for QAP. Activities were performed in 2018 and 2019. No suspect contaminated soils were identified. Clean soil was used as fill within the airports Clean Soil Disposal Area.	Wendy Hansen
2/21/2020	Document, Report, or Work plan Review - other	Staff approved a work plan for Federal Express to pre-characterize for PFAS under concrete aircraft ramps at AIA to support construction activities planned for 2020 to replace the ramps. Eight boreholes will be drilled through the concrete ramps. One sample will be collected from each borehole to be analyzed for PFAS. The samples will represent upper 15 inches of fill underneath the concrete, which is the zone of fill that will be removed during the project. Two additional samples will be collected from an adjacent gravel area currently used as a snow dump. The purpose of these samples, to be taken from the top foot, is to serve as a baseline prior to potential soil storage. This sampling is being conducted to support year 1 of a three year project. Additional sampling is anticipated to support years 2 and 3. A separate plan will be provided for the management of petroleum-contaminated soils that could be encountered during construction.	Wendy Hansen
2/21/2020	Document, Report, or Work plan Review - other	Staff provided initial input on Sampling and Analysis Plan (SAP) for Concourse B Passenger Boarding Bridge (PBB) Replacement at AIA, for consideration. The SAP is currently under revision, and plans are being revised to account for PFAS. Pre-construction sampling will be considered for PFAS.	Wendy Hansen
3/12/2020	Update or Other Action	Pre-construction PFAS data were received for the Federal Express ramp replacement project, Year 1 (2020). One of eight borings in the construction area showed PFOS at 0.00342 mg/kg (slightly above the migration to groundwater cleanup level of 0.0030 mg/kg). It was determined that no restrictions will apply for on airport placement of the soils removed during Year 1 of the project. It is anticipated that pre-characterization samples will be collected to support Years 2 and 3 later in 2020. A soil management plan for petroleum is pending.	Wendy Hansen
3/18/2020	Document, Report, or Work plan Review - other	Staff reviewed field summary report for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc. No contaminated soils were identified during this project. Soils removed from the site were brought to the airport's Clean Soil Disposal Area.	Wendy Hansen
3/18/2020	Document, Report, or Work plan Review - other	Staff reviewed field summary report for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company. No petroleum-contaminated soils were identified during this project. Soils removed from the site were either reused or brought to the airport's Clean Soil Disposal Area. No soils were stockpiled.	Wendy Hansen
3/18/2020	Document, Report, or Work plan Review - other	Staff reviewed field summary report for ANC AIA Taxiway F Reconstruction project prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc. No contaminated soils were identified during this project. Soils removed from the site were brought to the airport's Clean Soil Disposal Area.	Wendy Hansen
4/6/2020	Document, Report, or Work plan Review - other	Staff approved Sampling and Analysis Plan for ANC Concourse B PBB Replacement Project written by Tellus for Roger Hickel Contracting. Soil excavated from B10 (approximately 50 cubic yards) will be stockpiled and sampled for both petroleum (GRO, DRO, and VOCs) and PFAS to determine disposition. Stockpiled soil will be segregated based on field screening for petroleum during excavation with suspect clean (not contaminated), warm (suitable for landspreading), and hot (not suitable for landspreading) soils kept separate in long-term stockpiles. Soils found to contain PFAS and/or chlorinated solvents will be held pending consultation with ADEC. Otherwise, clean soils found to not be contaminated with petroleum will be placed in AIA's Clean Soil Wasting Area for re-use, warm soils will be transported to AFSC/Menzies Landspreading Area, and hot soils will be thermally treated at Alaska Soil Recycling. Excavation confirmation samples will be analyzed for GRO, DRO, VOCs, PAH (20%), and PFAS.	Wendy Hansen
4/24/2020	Document, Report, or Work plan Review - other	Staff approved work plan titled "Ted Stevens Anchorage International Airport PFAS Investigation Work Plan Taxiway S Improvements Project Area" The plan included procedures and sampling design to pre-characterize in place soils that may be excavated during a Taxiway S improvement project for PFAS. Data from the sampling will be used to discern areas impacted by PFAS contamination from areas not impacted by PFAS within the planned project area. Based on the information provided for soil to be removed and the approved sample design, areas found to be not impacted by PFAS could be reused on airport property in non-sensitive areas. The plan includes drilling 32 borings within the project area, 27 within 28 inch deep excavation areas and 5 along a 96 inch proposed utility trench excavation area. One sample will be collected from each the 27 borings, and three samples each from the 96 inch deep borings. The samples will be analyzed for PFAS by EPA 537M. Results will be presented in a report.	Wendy Hansen
5/7/2020	Document, Report, or Work plan Review - other	Staff reviewed and conditionally approved Sampling and Analysis Plan for Federal Express Corporation’s ANCH Ramp Paving Replacement. The project area is located at Federal Express Corporation’s ANC Facility. Ten of the concrete hardstand structures along with the central taxiplane along the western side of the Fed Ex facility will be addressed during this project. A smaller rectangular area located near Postmark Drive is also included in this project. Excavated soil will be segregated into clean and contaminated stockpiles, and sampled for contaminants of concern. Clean soil as determined by sample and analysis of COCs, may be re-used for this project. ADEC approved of the Sampling and Analysis Plan with the following conditions: •Based on the results of the sampling results for this project, ADEC may request further sampling if the soils will be taken off airport property and placed in sensitive areas. Soil shall not be transported off airport property unless approved by ADEC. •All sample and field screening locations shall be documented in a field notebook and field locates will be collected so the field screening and sample locations can be identified on a figure with a scale for ADEC review. •ADEC requires characterization of all soils that are removed from the project site even those determined “clean” by field screening. All soil should be characterized for DRO, GRO, RRO, and VOCs (not just BTEX), and any site specific COCs. •Laboratory samples need to be analyzed by ADEC approved labs and methods. •Clean soil determinations need to meet 18 AAC 75.341 Table B1 and B2 most stringent cleanup levels for GRO,DRO, VOCs, and any site specific contaminants of concern. •If any contractor or subcontractor personnel will be traveling to Anchorage to assist in this project, a COVID protective plan will need to be submitted for review to: akcovidplans@ak-prepared.com	Todd Blessing
5/19/2020	Update or Other Action	Staff reviewed and approved of ADOT's request to move of a portion of soil generated during the jet bridge (B10) project. 10 cubic yards was approved to be moved to the clean soil area and ADEC agreed to ADOT's request to composite sampling of another 25 cubic yards of PFOS potentially impacted soil.	Todd Blessing
5/20/2020	Update or Other Action	Staff was informed of an unexpected soil removal from postmark mill and pave project from ADOT staff. ADEC approved of ADOT staff's proposal to sample the removed soil (up to 600 cubic yards) and submit to SGS 5 samples: each sample a composite of 5 borings at 6 inches depth, taken from 1/5th slices of the stockpile. Sample locations will be documented with GPS, detailed drawing showing the sample collection locations in a field notebook, along with sample collection method, times, weather, and everything in field sampling guidance. Proper chain of custody will be followed.	Todd Blessing
6/15/2020	Update or Other Action	Staff approved of transporting clean soil generated during the Fed Ex Ramp Paving Replacement project to the west side of the airport at the unclassified disposal area.	Todd Blessing
6/16/2020	Update or Other Action	Staff approved ADOT&PF's request to move soil generated during the ANC Concourse B PBB Replacement Project to the western fill site.	Todd Blessing
6/22/2020	Document, Report, or Work plan Review - other	Staff reviewed FHWA Old International Road Project Area PFAS investigation work plan. The work plan was developed by Restoration Science and Engineering and the objective was to determine whether PFAS related compounds are present in soil in the proposed project area (50th avenue and Old International Road project area). Comments were provided and the work plan was requested to be revised.	Todd Blessing
6/24/2020	Document, Report, or Work plan Review - other	Staff reviewed and approved a work plan developed by Restoration Science and Engineering dated June 23, 2020 for PFAS investigation at the Old International Airport road project. RSE intends to contract Discovery Drilling to install 8 soil boring using direct push methods. Specifically, Discovery Drilling will use a Geoprobe 6712DT and MC 5 tooling to collect continuous drive samples. Soil samples will be contained within a five-foot clear plastic sleeve. RSE propose collecting two (2) three-point composite samples from each soil boring. *06/29/2020 updated: staff approved of a deviation to hang dig instead of advancing borings in the drainage ditch on the south of the road to avoid the Enstar high pressure line.	Todd Blessing
6/25/2020	Document, Report, or Work plan Review - other	Staff reviewed and approve of Federal Express addendum to work plan for years two and three, dated June 2020 to evaluate PFAS in soils prior to ramp area repairs. Ten borings will be advanced in 2020 and eleven in 21. Sampling and analysis will be in accordance with ADEC approved work plan for year 1.	Todd Blessing
6/26/2020	Update or Other Action	Staff approved of ADOT&PF's request to move soil generated during the Postmark Drive Mill/Pave project. 300 to 350 cubic yards of soil had been stockpiled at Postmark Drive very close to the intersection with West International Airport Road.	Todd Blessing
7/15/2020	Document, Report, or Work plan Review - other	ADOT&PF provided a report to DEC that documents PFOS was detected at levels above migration to groundwater cleanup levels at the Taxiway Sierra proposed project site. ADEC would like to discuss removal/disposal of this soil in the near future with ADOT&PF. Update: on July 21st ADEC discussed disposal options with ADOT&PF. ADOT&PF is going to have internal discussions about potential disposal options and then reach out to ADEC.	Todd Blessing
7/16/2020	Update or Other Action	ADEC received the Field Summary Report for ANC Concourse B Passenger Boarding Bridge Replacement. This report documented the sampling and analysis of stockpiled soils that were eventually disposed of at the soil western fill area.	Todd Blessing
7/16/2020	Update or Other Action	Received request for transport approval from Tellus for 1,250 cubic yards of petroleum contaminated soil from the FedEx ramp project (year 1 work on hardstands) to a temporary staging area 0.5 miles away. The soil will be stored in a lined, bermed, and covered cell that is being constructed to hold it.	Janice Wiegers
7/21/2020	Update or Other Action	ADEC requested that the 1,250 cubic yards of petroleum contaminated soil from the FedEx ramp project be segregated and sampled by Tellus to differentiate hot from warm soil to determine appropriate disposal options.	Todd Blessing
7/23/2020	Update or Other Action	Approved of ADOT&PFs request to sample and analyze sediment for PFAS in airport culverts. ADOT&PF would like to eventually cleanout the sediment in the culverts.	Todd Blessing
7/23/2020	Update or Other Action	Staff approved of a ADOT&PF work plan to evaluate PFAS contamination at Taxiway Kilo. This site characterization is intended to inform AIA engineers and managers of PFAS contamination which may impact the construction phase of the improvement project. The end goal of this project is to properly characterize the soil that is to be excavated and removed to different locations within the airport, to ensure any PFAS-contaminated soil is separated and disposed of separately from clean soil. Soil free of contaminants will be moved to a location on airport property where the soil is needed to maintain level ground. If soil with high PFAS concentrations are discovered, the project engineers may choose to change the scope of the project to minimize disturbance of this soil.	Todd Blessing
8/7/2020	Update or Other Action	Staff reviewed and approved Restoration Science and Engineering (RSE) work plan to sample and analyze for PFAS at CRW 6A Quick Cargo area. RSE will collect soil samples from six soil borings to be analyzed for PFAS. Staff approved the work plan with the recommendation that soil would be collected from 0-15 feet below ground surface (bgs) rather than 0-40 feet bgs.	Todd Blessing
8/18/2020	Update or Other Action	Staff reviewed and conditionally approved a sampling and analysis plan for PFAS at the Postmark Drive Lake Hood drive reconstruction area. Data from the investigation will be used to discern areas impacted by PFAS contamination from areas not impacted by PFAS. The work plan was approved provided investigated derived water would be treated with a new granulated activated carbon canister.	Todd Blessing
8/20/2020	Update or Other Action	Staff approved of transporting 1,000 cubic yards of soil to the AFSC landspread area generated during the Hardstand #5 improvement project at Fed EX Ramp.	Todd Blessing
8/31/2020	Document, Report, or Work plan Review - other	Staff reviewed Ted Stevens Anchorage International Airport PFAS Investigation, ANC FHWA Old International Road Project Area, August 17, 2020. No PFAS were detected above ADEC migration to groundwater cleanup levels.	Todd Blessing
9/1/2020	Update or Other Action	Staff approved of Tellus, Ltd. proposal to segregate and sample VOC impacted soil to determine disposal options for the Fed Ex project.	Todd Blessing
9/10/2020	Update or Other Action	Staff reviewed AIA Taxiway K PFAS report. Six soil samples from six soil borings were collected to be analyzed for PFAS. No PFAS were detected above method two migration to groundwater cleanup levels.	Todd Blessing
9/22/2020	Document, Report, or Work plan Review - other	Staff reviewed Taxiway K PFAS sediment sampling report. The investigation was conducted to inform ANC engineers and managers, and DEC of PFAS contamination which may impact the design phase of the Taxiway K project. In order to minimize soil disturbance and removal until a long-term PFAS soil-management plan at the airport has been decided. Sediment soil samples were collected from 7 drainage ditch locations and analyzed for PFAS. The levels of PFOS and PFOA were below ADEC Method 2 Migration to Groundwater cleanup levels n 6 of the 7 locations. “Alpha West Drainage” was the only soil sample with results above migration to groundwater cleanup levels for PFOS only. Staff sent an email to ADOT&PF approving of culvert inspections and limited soil removal from sampled culverts with the exception of Alpha West Drainage. Any soil removed from the culverts should be left on AIA property and it's disposal location documented. Report is located in the AIA Anchorage Sitewide PFAS site file.	Todd Blessing
9/29/2020	Site Characterization Report Approved	Staff reviewed and approved Taxilane PFAS Site Characterization Report. Six boreholes approximately 20 feet apart were advanced to 6” in depth, and an equal amount of soil was scraped off the edges of the borehole walls, and mixed together for a single sample provided to the laboratory for analysis. Results show that the soil is non-detect for PFOA, and estimated at 0.00086mg/kg for PFOS, which is below the ADEC Method 2 migration to groundwater cleanup level for PFOS of 0.003 mg/kg.	Todd Blessing
9/30/2020	Site Characterization Report Approved	Staff reviewed and approved of a report that documented the sampling and analysis of a sediment sample from a drainage ditch and 6 soil composite samples from the surface north of the Lake Hood Airstrip area, where the ADOT&PF has determined soil removal may take place during a future Lake Hood Airstrip construction project. The results from six composite samples stretching across the surface of the Lake Hood Airstrip were non-detect for all 24 laboratory provided PFAS compounds, including PFOA and PFOS. The sediment sample results for the North Ditch revealed levels of PFOS above the DEC migration to groundwater level. PFOA was not detected in the north ditch sediment sample.	Todd Blessing
10/27/2020	Offsite Soil or Groundwater Disposal Approved	Staff approved of Tellus Ltd's request to transport 2,000 cubic yards of fuel impacted soil to AFSC's landspread area that was generated during the AIA Ramp Area Project at 6050 Rockwell Avenue.	Todd Blessing
10/27/2020	Site Characterization Report Approved	Staff reviewed and approved of report titled "Yrs 2/3 Investigation Report to Investigate Presence/Absence of Per- and Polyfluoroalkyl Substances (PFAS) in Soils at Federal Express ANC". In this report EA Engineering, Science, and Technology, Inc., documented the sampling and analysis of soils for PFAS in support of a 3-year ramp pavement repair/replacement project that began in June 2020. This work was conducted under an approved work plan addendum dated June 23, 2020. Twenty four borings were advanced and soil samples were collected from each boring to be analyzed for PFAS using EPA Method 537 modified. Sample results indicate low level detections of PFAS but none of the PFAS detections exceeded DEC migration to groundwater cleanup levels for PFOS or PFOA.	Todd Blessing
8/30/2021	Document, Report, or Work plan Review - other	DEC reviewed and commented on the Field Sampling Work Plan for Taxiways K, G1, and J Improvements at the Anchorage International Airport dated July 2021 and prepared by BGES for Granite Construction. Granite Construction and BGES will be excavating and sampling soil for BTEX or VOCs, DRO, RRO, and PFAS. Soil intended to go back in the excavation will not be sampled. DEC requested VOCs and PAHs be analyzed at excavation limits. BGES responded to comments on 5/3/22.	Janice Wiegers
4/11/2022	Document, Report, or Work plan Review - other	DEC approved a work plan for PFAS sampling at two access gates scheduled for repairs or upgrades.	Robert Burgess
5/23/2022	Update or Other Action	DEC approved the Taxilane E1, E3, and EG Intersection Reconstruction workplan, prepared by BGES. QAP is excavating in several areas around the North Terminal and Concourse B. Several petroleum contaminated sites are located in this area and excavation may extend up to contaminated areas, but is not expected to overlap. Low levels of PFAS have also been detected at a few sampling locations in this area. The environmental consultant, BGES, will be on site when excavation is occurring around the hydrant fuel system, and when other contamination is observed. Excess soil will be stockpiled and sampled for VOCs, GRO, DRO, and PFAS before disposal.	Janice Wiegers
8/7/2023	Update or Other Action	DEC approved the ANC Terminal Water Main Improvements Contaminated Materials Management Plan (CMMP), prepared by Restoration Science & Engineering, Inc. (RSE). The Terminal Water Main Improvement Project consists of upgrading the water main inside the secured Airport Operations Area(AOA) including A Concourse, C Concourse, and the North Terminal and outside the AOA at the Old Airfield Maintenance Building. Potentially contaminated soil may be encountered during these activities and require management that is protective of human and environmental health. The CMMP documents establishment of designated work areas, transportation of potentially contaminated soil, decontamination of equipment, sampling and management of stockpiles. Excess soil will be stockpiles and sampled for VOCs, PAHs, GRO, DRO and PFAS to determine how they will be handled.	Shawn Tisdell
11/3/2023	Offsite Soil or Groundwater Disposal Approved	DEC approved transport of 258 cubic yards of DRO contaminated soil to the AIA Landspreading Area for disposal. The soil comes from stockpiles 5, 6, and a portion of stockpile 2, which were created during the 2021 Taxiway K project.	Janice Wiegers
7/9/2024	Update or Other Action	DEC met with AIA, Statewide DOT design, and staff from the EPA Region 10 RCRA program to discuss AIA/DOT plans to decommission the FBI shooting range on airport property as part of a taxiway construction project. The conversation was focused on regulatory compliance, EPA and DEC processes, and characterization and cleanup of metals contaminated soils at the shooting range. The adjacent fire training pit site also came up in discussion due to historical detections of PCBs and dioxins, as well as the likelihood that additional PFAS will be regulated under RCRA in the near future. DEC and EPA staff recommended treating the characterization and cleanup of the shooting range and the fire training pit as separate projects from the taxiway construction to avoid complications with multiple contractors and subcontractors or other logistical complications.	Robert Burgess
4/2/2025	Update or Other Action	DEC approved a pre-construction soil sampling work plan for the UPS Facility at Anchorage International Airport (AIA). The plan outlined soil sampling activities in support of the new C08 fire line installation at Building A2. The purpose of this sampling is to characterize the soil for potential contaminants and to determine its geotechnical properties prior to installation. Soil sampling will be conducted using a GeoProbe. direct-push drill rig. Work is anticipated to start the work on or around April 2, 2025.	Shawn Tisdell
5/21/2025	Risk Assessment Workplan Approved	DEC approved the Submittal 37.00 Soil Testing Work Plan for the ANC NTNS Aprons & TL Reconstruction & ANC TWMI. This work plan documents analytical soil sampling planned for the ANC North Terminal Northside Aprons and Taxilane Reconstruction as part of the ANC Terminal Water Main Improvements project.	Shawn Tisdell

Action Date

Action

Description

DEC Staff

2/19/1998

Meeting or Teleconference Held

Presentation on RISK ZONES: On February 19th airport staff presented information to CRSP and STP staff and management on the Anchorage International Airport's plans for major expansion, and presented an overview of the airport's proposed plan for developing risk-based cleanup levels for zones within the airport boundaries. The zones would be identified based on exposure scenarios including receptors and site conditions (soils, depth to groundwater). The airport proposes to complete risk assessments that would be representative of each zone to streamline individual site cleanups.

Eileen Olson

12/22/1999

Site Added to Database

Diesel contamination widespread, some gasoline contamination present.

Eileen Olson

1/24/2000

Site Ranked Using the AHRM

Initial ranking.

Eileen Olson

5/9/2000

Site Ranked Using the AHRM

Changed GW Usage Value from 0.4 to 0.8.

Eileen Olson

12/6/2000

Update or Other Action

Approval of final comment responses for RA.

Renee Evans

1/10/2001

Update or Other Action

Letter to AIA generally agreeing with Risk Management approach.

Renee Evans

1/23/2001

Update or Other Action

Submittal of AIA Master Plan referred to in risk Management plans.

Renee Evans

3/27/2001

Update or Other Action

AIA Groundwater Use Determination.

Renee Evans

3/27/2001

Institutional Control Record Established

In accordance with 18 AAC 75.350, ADEC has determined that the unconfined groundwater (above the Bootlegger Cove Formation) at the Anchorage International Airport (AIA) is not a current or future drinking water source. This determination is subject to the following conditions: 1. It applies only within the Airside and Commercial RMZ’s, as described in the Airport-Wide Remediation Management Plan. It does not apply within the Ecological RMZ. 2. It does not establish alternative cleanup levels within those zones but allows ADEC to use the determination in making decisions in accordance with 18 AAC 75.345(b)(2) - (3). 3. Any drinking water wells located on AIA property must be properly abandoned in accordance with ADEC decommissioning procedures within two years of this decision. 4. AIA shall prohibit the installation of any water wells, used for drinking, cooling, washdown, or any other purposes, on the AIA either through 17 AAC 42.410 (b) (27) of the airport leasing regulations or in their individual lease agreement documents. 5. The existing AIA water well used to maintain the water level in Lake Hood is not considered a drinking water well. However, AIA is responsible for determining its wellhead protection area and ensuring that it maintains levels at or below 18 AAC 75.345 Table C values, unless otherwise approved by ADEC. March 19, 2007 Amendment: DEC has determined that the shallow groundwater along the Lake Hood shoreline is not a current or future drinking water source in accordance with 18 AAC 75.350. Therefore, the March 2001 groundwater use determination is amended to include the shallow groundwater in the Ecological RMZ in that determination.

Todd Blessing

6/4/2001

Meeting or Teleconference Held

Meeting at AIA regarding draft Airport Wide Risk Management Plan.

Renee Evans

6/19/2001

Update or Other Action

Draft workplan for Airport Wide Risk Management workplan received.

Renee Evans

7/9/2001

Risk Assessment Report Approved

Human Health Risk Assessment for Terminal/Ramp Area - Final Acceptance

Renee Evans

8/6/2001

Update or Other Action

Comments from term contractor - Oasis regarding draft Risk Management plan.

Renee Evans

12/18/2002

Proposed Plan

Approved Evaluation of Lake Hood Well Influence work plan.

Lynne Bush

12/23/2002

Proposed Plan

"Soil Landspreading and Remediation Agreement" between the AIA and DEC was signed by both parties. The landspreading plan is officially effective this date.

Lynne Bush

1/16/2003

Update or Other Action

Requested information on location and current condition of the pcs from the 30 Lake Hood USTs deposited at the landspreading area in the early 90s. If these soils can be segregated and sampled, the Department might be able to close the sites.

Lynne Bush

3/25/2003

Update or Other Action

Began installing monitoring wells this week for Lake Hood Well Survey.

Lynne Bush

4/12/2004

Update or Other Action

Approved of Airport's request to reuse contaminated soils for the South Terminal, North Taxi Lane Reconstruction Project: AKSAS project No. 57040

Todd Blessing

6/23/2004

Update or Other Action

AIA responded to ADEC's comments regarding the risk management plan- ADEC had no further comments. Risk managment plan should be finalized shortly.

Todd Blessing

8/23/2004

Update or Other Action

DEC approved of AIA Risk Management Plan on a site specific basis.

Todd Blessing

3/13/2008

Exposure Tracking Model On Hold

Todd Blessing

8/23/2011

Update or Other Action

DEC staff revieved a letter from Scott Lytle as a follow up to staff's September 6, 2007 letter. This letter extended the due date for removal of drinking water wells at AIA and rescinded our prior request for a long term AIA groundwater monitoring plan. Mr. Lytle's letter confirmed that drinking water wells in South Airpark have been removed in accordance with the approved Area-Wide Risk Base Cleanup Alternative Cleanup Levels. The wells were removed in May of 2010 and 2011.

Todd Blessing

6/13/2017

Document, Report, or Work plan Review - other

Reviewed Sampling Plan (Soil Management Plan) for Lake Hood Seaplane Base and Lakeshore Taxilane Reconstruction project. The plan outlined steps for the management of contaminated soil, if encountered, during construction and subsequent confirmation sampling.

Wendy Hansen

6/28/2018

Document, Report, or Work plan Review - other

Reviewed sampling plan for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc, and provided comments. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. A final project report will be submitted.

Wendy Hansen

7/3/2018

Document, Report, or Work plan Review - other

Reviewed sampling plan for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company, and provided comments. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. A final project report will be submitted.

Wendy Hansen

8/3/2018

Document, Report, or Work plan Review - other

Reviewed Rev.1 (August 2, 2018) and subsequently Rev.2 (August 3, 2018) to the work plan for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company, and provided additional comments.

Wendy Hansen

8/3/2018

Document, Report, or Work plan Review - other

Reviewed Rev.1 (August 1, 2018) and subsequently Rev.2 (August 3, 2018) to the work plan for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc, and provided additional comments.

Wendy Hansen

8/9/2018

Document, Report, or Work plan Review - other

DEC approved work plan for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc.

Wendy Hansen

8/9/2018

Document, Report, or Work plan Review - other

Staff received report for Lake Hood Seaplane Base and Lakeshore Taxiway Reconstruction project. During construction of the Seaplane Base West Ramp, GRO contamination was encountered adjacent to Lake Hood Air Harbor (ADEC File No. 2100.26.264; Hazard ID 23409). Approximately 20 cubic yards of soils were removed and taken to the AIA Landspread Area.

Wendy Hansen

8/14/2018

Document, Report, or Work plan Review - other

Reviewed and approved Rev.3 to the work plan for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company and provided clarification for BTEX maximum allowable for landspreading. This clarification was also provided for the Taxiway V reconstruction project.

Wendy Hansen

8/23/2018

Document, Report, or Work plan Review - other

Reviewed sampling plan for ANC Runway 15/33 Rehabilitation prepared by Tellus, Ltd. for QAP, and provided comments. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. A final project report will be submitted.

Wendy Hansen

3/11/2019

Document, Report, or Work plan Review - other

Staff reviewed and approved sampling analysis plan for ANC Miscellaneous Repairs and Fleet Fueling Facility Project CSAPT00199 written by Tellus for Roger Hickel Contracting, Inc (RHC). The project is the Fleet Fueling Facility area located along Taxiway V and near both the AIA Airfield Maintenance Facility and Menzies Aviation office. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area.

Wendy Hansen

4/5/2019

Document, Report, or Work plan Review - other

Approved of revised sampling plan for ANC Runway 15/33 Rehabilitation prepared by Tellus, Ltd. for QAP. Staff provided comments to the draft plan on August 23, 2018.

Wendy Hansen

4/18/2019

Document, Report, or Work plan Review - other

Approved sampling plan for ANC AIA Taxiway F Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified: To comply with bid specifications, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. Field screening and sampling will also be conducted to comply with ADEC field sampling guidance. A final project report will be submitted that identifies where contamination was found.

Wendy Hansen

6/3/2019

Document, Report, or Work plan Review - other

Staff reviewed and approved sampling analysis plan for AIA Gate N10 Tug Road Reconstruction project. The project area is located east of and adjacent to the AIA Field Maintenance Facility at AIA. The subject work plan was submitted to DEC to define procedures for managing potentially contaminated soils during the construction project. In areas where contamination is suspected or observed, Tellus will field screen soils. Contaminated soil encountered will either be transported to Alaska Soil Recycling if concentrations exceed the maximum allowable concentrations, or to ANC’s landspread area. For contaminated areas identified: To comply with bid specifications, the bottom of the excavation shall be field screened on a minimum twenty-five (25) foot by twenty-five (25) foot grid and the sidewalls shall be field screened at twenty-five (25) foot intervals, half way between the top and the bottom of the excavation. The field screening locations within the storm drain, utility system, and fueling system trench excavations shall be located along the centerline and both sidewalls of the trenches at twenty-five (25) foot intervals to determine the analytical sampling locations. Analytical samples will be collected from twenty-five (25) percent of the field screening locations with the highest field screening (PID) readings, and analyzed for BTEX, GRO, and DRO. Field screening and sampling will also be conducted to comply with ADEC field sampling guidance. A final project report will be submitted that identifies where contamination was found.

Wendy Hansen

10/4/2019

Document, Report, or Work plan Review - other

Staff reviewed a report for the AIA Gate N10 Tug Road Reconstruction project. No contaminated soil was identified during implementation of this project.

Wendy Hansen

10/11/2019

Document, Report, or Work plan Review - other

Staff reviewed the report for ANC Miscellaneous Repairs and Fleet Fueling Facility Project written by Tellus for Roger Hickel Contracting, Inc (RHC). Approximately 5 cubic yards of contaminated soil was approved for transport to the AIA landspreading area on June 4, 2019. DRO was detected in the soil above cleanup levels at 1,400 mg/kg. No confirmation samples were collected after soil removal. This construction project was associated with Site AIA Tanks #19, 20, 21. File Number: 2100.26.596. Hazard ID: 26519.

Wendy Hansen

12/19/2019

Document, Report, or Work plan Review - other

Reviewed field summary report for ANC Runway 15/33 Rehabilitation prepared by Tellus, Ltd. for QAP. Activities were performed in 2018 and 2019. No suspect contaminated soils were identified. Clean soil was used as fill within the airports Clean Soil Disposal Area.

Wendy Hansen

2/21/2020

Document, Report, or Work plan Review - other

Staff approved a work plan for Federal Express to pre-characterize for PFAS under concrete aircraft ramps at AIA to support construction activities planned for 2020 to replace the ramps. Eight boreholes will be drilled through the concrete ramps. One sample will be collected from each borehole to be analyzed for PFAS. The samples will represent upper 15 inches of fill underneath the concrete, which is the zone of fill that will be removed during the project. Two additional samples will be collected from an adjacent gravel area currently used as a snow dump. The purpose of these samples, to be taken from the top foot, is to serve as a baseline prior to potential soil storage. This sampling is being conducted to support year 1 of a three year project. Additional sampling is anticipated to support years 2 and 3. A separate plan will be provided for the management of petroleum-contaminated soils that could be encountered during construction.

Wendy Hansen

2/21/2020

Document, Report, or Work plan Review - other

Staff provided initial input on Sampling and Analysis Plan (SAP) for Concourse B Passenger Boarding Bridge (PBB) Replacement at AIA, for consideration. The SAP is currently under revision, and plans are being revised to account for PFAS. Pre-construction sampling will be considered for PFAS.

Wendy Hansen

3/12/2020

Update or Other Action

Pre-construction PFAS data were received for the Federal Express ramp replacement project, Year 1 (2020). One of eight borings in the construction area showed PFOS at 0.00342 mg/kg (slightly above the migration to groundwater cleanup level of 0.0030 mg/kg). It was determined that no restrictions will apply for on airport placement of the soils removed during Year 1 of the project. It is anticipated that pre-characterization samples will be collected to support Years 2 and 3 later in 2020. A soil management plan for petroleum is pending.

Wendy Hansen

3/18/2020

Document, Report, or Work plan Review - other

Staff reviewed field summary report for AIA LHD Taxiway V Reconstruction prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc. No contaminated soils were identified during this project. Soils removed from the site were brought to the airport's Clean Soil Disposal Area.

Wendy Hansen

3/18/2020

Document, Report, or Work plan Review - other

Staff reviewed field summary report for ANC Taxiway R Group VI Improvements prepared by Tellus, Ltd. for Granite Construction Company. No petroleum-contaminated soils were identified during this project. Soils removed from the site were either reused or brought to the airport's Clean Soil Disposal Area. No soils were stockpiled.

Wendy Hansen

3/18/2020

Document, Report, or Work plan Review - other

Staff reviewed field summary report for ANC AIA Taxiway F Reconstruction project prepared by Tellus, Ltd. for Roger Hickel Contracting, Inc. No contaminated soils were identified during this project. Soils removed from the site were brought to the airport's Clean Soil Disposal Area.

Wendy Hansen

4/6/2020

Document, Report, or Work plan Review - other

Staff approved Sampling and Analysis Plan for ANC Concourse B PBB Replacement Project written by Tellus for Roger Hickel Contracting. Soil excavated from B10 (approximately 50 cubic yards) will be stockpiled and sampled for both petroleum (GRO, DRO, and VOCs) and PFAS to determine disposition. Stockpiled soil will be segregated based on field screening for petroleum during excavation with suspect clean (not contaminated), warm (suitable for landspreading), and hot (not suitable for landspreading) soils kept separate in long-term stockpiles. Soils found to contain PFAS and/or chlorinated solvents will be held pending consultation with ADEC. Otherwise, clean soils found to not be contaminated with petroleum will be placed in AIA's Clean Soil Wasting Area for re-use, warm soils will be transported to AFSC/Menzies Landspreading Area, and hot soils will be thermally treated at Alaska Soil Recycling. Excavation confirmation samples will be analyzed for GRO, DRO, VOCs, PAH (20%), and PFAS.

Wendy Hansen

4/24/2020

Document, Report, or Work plan Review - other

Staff approved work plan titled "Ted Stevens Anchorage International Airport PFAS Investigation Work Plan Taxiway S Improvements Project Area" The plan included procedures and sampling design to pre-characterize in place soils that may be excavated during a Taxiway S improvement project for PFAS. Data from the sampling will be used to discern areas impacted by PFAS contamination from areas not impacted by PFAS within the planned project area. Based on the information provided for soil to be removed and the approved sample design, areas found to be not impacted by PFAS could be reused on airport property in non-sensitive areas. The plan includes drilling 32 borings within the project area, 27 within 28 inch deep excavation areas and 5 along a 96 inch proposed utility trench excavation area. One sample will be collected from each the 27 borings, and three samples each from the 96 inch deep borings. The samples will be analyzed for PFAS by EPA 537M. Results will be presented in a report.

Wendy Hansen

5/7/2020

Document, Report, or Work plan Review - other

Staff reviewed and conditionally approved Sampling and Analysis Plan for Federal Express Corporation’s ANCH Ramp Paving Replacement. The project area is located at Federal Express Corporation’s ANC Facility. Ten of the concrete hardstand structures along with the central taxiplane along the western side of the Fed Ex facility will be addressed during this project. A smaller rectangular area located near Postmark Drive is also included in this project. Excavated soil will be segregated into clean and contaminated stockpiles, and sampled for contaminants of concern. Clean soil as determined by sample and analysis of COCs, may be re-used for this project. ADEC approved of the Sampling and Analysis Plan with the following conditions: •Based on the results of the sampling results for this project, ADEC may request further sampling if the soils will be taken off airport property and placed in sensitive areas. Soil shall not be transported off airport property unless approved by ADEC. •All sample and field screening locations shall be documented in a field notebook and field locates will be collected so the field screening and sample locations can be identified on a figure with a scale for ADEC review. •ADEC requires characterization of all soils that are removed from the project site even those determined “clean” by field screening. All soil should be characterized for DRO, GRO, RRO, and VOCs (not just BTEX), and any site specific COCs. •Laboratory samples need to be analyzed by ADEC approved labs and methods. •Clean soil determinations need to meet 18 AAC 75.341 Table B1 and B2 most stringent cleanup levels for GRO,DRO, VOCs, and any site specific contaminants of concern. •If any contractor or subcontractor personnel will be traveling to Anchorage to assist in this project, a COVID protective plan will need to be submitted for review to: akcovidplans@ak-prepared.com

Todd Blessing

5/19/2020

Update or Other Action

Staff reviewed and approved of ADOT's request to move of a portion of soil generated during the jet bridge (B10) project. 10 cubic yards was approved to be moved to the clean soil area and ADEC agreed to ADOT's request to composite sampling of another 25 cubic yards of PFOS potentially impacted soil.

Todd Blessing

5/20/2020

Update or Other Action

Staff was informed of an unexpected soil removal from postmark mill and pave project from ADOT staff. ADEC approved of ADOT staff's proposal to sample the removed soil (up to 600 cubic yards) and submit to SGS 5 samples: each sample a composite of 5 borings at 6 inches depth, taken from 1/5th slices of the stockpile. Sample locations will be documented with GPS, detailed drawing showing the sample collection locations in a field notebook, along with sample collection method, times, weather, and everything in field sampling guidance. Proper chain of custody will be followed.

Todd Blessing

6/15/2020

Update or Other Action

Staff approved of transporting clean soil generated during the Fed Ex Ramp Paving Replacement project to the west side of the airport at the unclassified disposal area.

Todd Blessing

6/16/2020

Update or Other Action

Staff approved ADOT&PF's request to move soil generated during the ANC Concourse B PBB Replacement Project to the western fill site.

Todd Blessing

6/22/2020

Document, Report, or Work plan Review - other

Staff reviewed FHWA Old International Road Project Area PFAS investigation work plan. The work plan was developed by Restoration Science and Engineering and the objective was to determine whether PFAS related compounds are present in soil in the proposed project area (50th avenue and Old International Road project area). Comments were provided and the work plan was requested to be revised.

Todd Blessing

6/24/2020

Document, Report, or Work plan Review - other

Staff reviewed and approved a work plan developed by Restoration Science and Engineering dated June 23, 2020 for PFAS investigation at the Old International Airport road project. RSE intends to contract Discovery Drilling to install 8 soil boring using direct push methods. Specifically, Discovery Drilling will use a Geoprobe 6712DT and MC 5 tooling to collect continuous drive samples. Soil samples will be contained within a five-foot clear plastic sleeve. RSE propose collecting two (2) three-point composite samples from each soil boring. *06/29/2020 updated: staff approved of a deviation to hang dig instead of advancing borings in the drainage ditch on the south of the road to avoid the Enstar high pressure line.

Todd Blessing

6/25/2020

Document, Report, or Work plan Review - other

Staff reviewed and approve of Federal Express addendum to work plan for years two and three, dated June 2020 to evaluate PFAS in soils prior to ramp area repairs. Ten borings will be advanced in 2020 and eleven in 21. Sampling and analysis will be in accordance with ADEC approved work plan for year 1.

Todd Blessing

6/26/2020

Update or Other Action

Staff approved of ADOT&PF's request to move soil generated during the Postmark Drive Mill/Pave project. 300 to 350 cubic yards of soil had been stockpiled at Postmark Drive very close to the intersection with West International Airport Road.

Todd Blessing

7/15/2020

Document, Report, or Work plan Review - other

ADOT&PF provided a report to DEC that documents PFOS was detected at levels above migration to groundwater cleanup levels at the Taxiway Sierra proposed project site. ADEC would like to discuss removal/disposal of this soil in the near future with ADOT&PF. Update: on July 21st ADEC discussed disposal options with ADOT&PF. ADOT&PF is going to have internal discussions about potential disposal options and then reach out to ADEC.

Todd Blessing

7/16/2020

Update or Other Action

ADEC received the Field Summary Report for ANC Concourse B Passenger Boarding Bridge Replacement. This report documented the sampling and analysis of stockpiled soils that were eventually disposed of at the soil western fill area.

Todd Blessing

7/16/2020

Update or Other Action

Received request for transport approval from Tellus for 1,250 cubic yards of petroleum contaminated soil from the FedEx ramp project (year 1 work on hardstands) to a temporary staging area 0.5 miles away. The soil will be stored in a lined, bermed, and covered cell that is being constructed to hold it.

Janice Wiegers

7/21/2020

Update or Other Action

ADEC requested that the 1,250 cubic yards of petroleum contaminated soil from the FedEx ramp project be segregated and sampled by Tellus to differentiate hot from warm soil to determine appropriate disposal options.

Todd Blessing

7/23/2020

Update or Other Action

Approved of ADOT&PFs request to sample and analyze sediment for PFAS in airport culverts. ADOT&PF would like to eventually cleanout the sediment in the culverts.

Todd Blessing

7/23/2020

Update or Other Action

Staff approved of a ADOT&PF work plan to evaluate PFAS contamination at Taxiway Kilo. This site characterization is intended to inform AIA engineers and managers of PFAS contamination which may impact the construction phase of the improvement project. The end goal of this project is to properly characterize the soil that is to be excavated and removed to different locations within the airport, to ensure any PFAS-contaminated soil is separated and disposed of separately from clean soil. Soil free of contaminants will be moved to a location on airport property where the soil is needed to maintain level ground. If soil with high PFAS concentrations are discovered, the project engineers may choose to change the scope of the project to minimize disturbance of this soil.

Todd Blessing

8/7/2020

Update or Other Action

Staff reviewed and approved Restoration Science and Engineering (RSE) work plan to sample and analyze for PFAS at CRW 6A Quick Cargo area. RSE will collect soil samples from six soil borings to be analyzed for PFAS. Staff approved the work plan with the recommendation that soil would be collected from 0-15 feet below ground surface (bgs) rather than 0-40 feet bgs.

Todd Blessing

8/18/2020

Update or Other Action

Staff reviewed and conditionally approved a sampling and analysis plan for PFAS at the Postmark Drive Lake Hood drive reconstruction area. Data from the investigation will be used to discern areas impacted by PFAS contamination from areas not impacted by PFAS. The work plan was approved provided investigated derived water would be treated with a new granulated activated carbon canister.

Todd Blessing

8/20/2020

Update or Other Action

Staff approved of transporting 1,000 cubic yards of soil to the AFSC landspread area generated during the Hardstand #5 improvement project at Fed EX Ramp.

Todd Blessing

8/31/2020

Document, Report, or Work plan Review - other

Staff reviewed Ted Stevens Anchorage International Airport PFAS Investigation, ANC FHWA Old International Road Project Area, August 17, 2020. No PFAS were detected above ADEC migration to groundwater cleanup levels.

Todd Blessing

9/1/2020

Update or Other Action

Staff approved of Tellus, Ltd. proposal to segregate and sample VOC impacted soil to determine disposal options for the Fed Ex project.

Todd Blessing

9/10/2020

Update or Other Action

Staff reviewed AIA Taxiway K PFAS report. Six soil samples from six soil borings were collected to be analyzed for PFAS. No PFAS were detected above method two migration to groundwater cleanup levels.

Todd Blessing

9/22/2020

Document, Report, or Work plan Review - other

Staff reviewed Taxiway K PFAS sediment sampling report. The investigation was conducted to inform ANC engineers and managers, and DEC of PFAS contamination which may impact the design phase of the Taxiway K project. In order to minimize soil disturbance and removal until a long-term PFAS soil-management plan at the airport has been decided. Sediment soil samples were collected from 7 drainage ditch locations and analyzed for PFAS. The levels of PFOS and PFOA were below ADEC Method 2 Migration to Groundwater cleanup levels n 6 of the 7 locations. “Alpha West Drainage” was the only soil sample with results above migration to groundwater cleanup levels for PFOS only. Staff sent an email to ADOT&PF approving of culvert inspections and limited soil removal from sampled culverts with the exception of Alpha West Drainage. Any soil removed from the culverts should be left on AIA property and it's disposal location documented. Report is located in the AIA Anchorage Sitewide PFAS site file.

Todd Blessing

9/29/2020

Site Characterization Report Approved

Staff reviewed and approved Taxilane PFAS Site Characterization Report. Six boreholes approximately 20 feet apart were advanced to 6” in depth, and an equal amount of soil was scraped off the edges of the borehole walls, and mixed together for a single sample provided to the laboratory for analysis. Results show that the soil is non-detect for PFOA, and estimated at 0.00086mg/kg for PFOS, which is below the ADEC Method 2 migration to groundwater cleanup level for PFOS of 0.003 mg/kg.

Todd Blessing

9/30/2020

Site Characterization Report Approved

Staff reviewed and approved of a report that documented the sampling and analysis of a sediment sample from a drainage ditch and 6 soil composite samples from the surface north of the Lake Hood Airstrip area, where the ADOT&PF has determined soil removal may take place during a future Lake Hood Airstrip construction project. The results from six composite samples stretching across the surface of the Lake Hood Airstrip were non-detect for all 24 laboratory provided PFAS compounds, including PFOA and PFOS. The sediment sample results for the North Ditch revealed levels of PFOS above the DEC migration to groundwater level. PFOA was not detected in the north ditch sediment sample.

Todd Blessing

10/27/2020

Offsite Soil or Groundwater Disposal Approved

Staff approved of Tellus Ltd's request to transport 2,000 cubic yards of fuel impacted soil to AFSC's landspread area that was generated during the AIA Ramp Area Project at 6050 Rockwell Avenue.

Todd Blessing

10/27/2020

Site Characterization Report Approved

Staff reviewed and approved of report titled "Yrs 2/3 Investigation Report to Investigate Presence/Absence of Per- and Polyfluoroalkyl Substances (PFAS) in Soils at Federal Express ANC". In this report EA Engineering, Science, and Technology, Inc., documented the sampling and analysis of soils for PFAS in support of a 3-year ramp pavement repair/replacement project that began in June 2020. This work was conducted under an approved work plan addendum dated June 23, 2020. Twenty four borings were advanced and soil samples were collected from each boring to be analyzed for PFAS using EPA Method 537 modified. Sample results indicate low level detections of PFAS but none of the PFAS detections exceeded DEC migration to groundwater cleanup levels for PFOS or PFOA.

Todd Blessing

8/30/2021

Document, Report, or Work plan Review - other

DEC reviewed and commented on the Field Sampling Work Plan for Taxiways K, G1, and J Improvements at the Anchorage International Airport dated July 2021 and prepared by BGES for Granite Construction. Granite Construction and BGES will be excavating and sampling soil for BTEX or VOCs, DRO, RRO, and PFAS. Soil intended to go back in the excavation will not be sampled. DEC requested VOCs and PAHs be analyzed at excavation limits. BGES responded to comments on 5/3/22.

Janice Wiegers

4/11/2022

Document, Report, or Work plan Review - other

DEC approved a work plan for PFAS sampling at two access gates scheduled for repairs or upgrades.

Robert Burgess

5/23/2022

Update or Other Action

DEC approved the Taxilane E1, E3, and EG Intersection Reconstruction workplan, prepared by BGES. QAP is excavating in several areas around the North Terminal and Concourse B. Several petroleum contaminated sites are located in this area and excavation may extend up to contaminated areas, but is not expected to overlap. Low levels of PFAS have also been detected at a few sampling locations in this area. The environmental consultant, BGES, will be on site when excavation is occurring around the hydrant fuel system, and when other contamination is observed. Excess soil will be stockpiled and sampled for VOCs, GRO, DRO, and PFAS before disposal.

Janice Wiegers

8/7/2023

Update or Other Action

DEC approved the ANC Terminal Water Main Improvements Contaminated Materials Management Plan (CMMP), prepared by Restoration Science & Engineering, Inc. (RSE). The Terminal Water Main Improvement Project consists of upgrading the water main inside the secured Airport Operations Area(AOA) including A Concourse, C Concourse, and the North Terminal and outside the AOA at the Old Airfield Maintenance Building. Potentially contaminated soil may be encountered during these activities and require management that is protective of human and environmental health. The CMMP documents establishment of designated work areas, transportation of potentially contaminated soil, decontamination of equipment, sampling and management of stockpiles. Excess soil will be stockpiles and sampled for VOCs, PAHs, GRO, DRO and PFAS to determine how they will be handled.

Shawn Tisdell

11/3/2023

Offsite Soil or Groundwater Disposal Approved

DEC approved transport of 258 cubic yards of DRO contaminated soil to the AIA Landspreading Area for disposal. The soil comes from stockpiles 5, 6, and a portion of stockpile 2, which were created during the 2021 Taxiway K project.

Janice Wiegers

7/9/2024

Update or Other Action

DEC met with AIA, Statewide DOT design, and staff from the EPA Region 10 RCRA program to discuss AIA/DOT plans to decommission the FBI shooting range on airport property as part of a taxiway construction project. The conversation was focused on regulatory compliance, EPA and DEC processes, and characterization and cleanup of metals contaminated soils at the shooting range. The adjacent fire training pit site also came up in discussion due to historical detections of PCBs and dioxins, as well as the likelihood that additional PFAS will be regulated under RCRA in the near future. DEC and EPA staff recommended treating the characterization and cleanup of the shooting range and the fire training pit as separate projects from the taxiway construction to avoid complications with multiple contractors and subcontractors or other logistical complications.

Robert Burgess

4/2/2025

Update or Other Action

DEC approved a pre-construction soil sampling work plan for the UPS Facility at Anchorage International Airport (AIA). The plan outlined soil sampling activities in support of the new C08 fire line installation at Building A2. The purpose of this sampling is to characterize the soil for potential contaminants and to determine its geotechnical properties prior to installation. Soil sampling will be conducted using a GeoProbe. direct-push drill rig. Work is anticipated to start the work on or around April 2, 2025.

Shawn Tisdell

5/21/2025

Risk Assessment Workplan Approved

DEC approved the Submittal 37.00 Soil Testing Work Plan for the ANC NTNS Aprons & TL Reconstruction & ANC TWMI. This work plan documents analytical soil sampling planned for the ANC North Terminal Northside Aprons and Taxilane Reconstruction as part of the ANC Terminal Water Main Improvements project.

Shawn Tisdell

Contaminant Information

Name	Level Description	Media
DRO	Other	SoilGroundwater
GRO	Other	SoilGroundwater
BTEX	Other	SoilGroundwater

Name

Level Description

Media

Comments

DRO

Other

SoilGroundwater

GRO

Other

SoilGroundwater

BTEX

Other

SoilGroundwater

Control Type

Type	Details
Other	Commercial and Airside Remediation Management Zones as well as the Lake Hood shoreline are not a present or future drinking water source.

Type

Details

Other

Commercial and Airside Remediation Management Zones as well as the Lake Hood shoreline are not a present or future drinking water source.

Requirements

Description	Details
Groundwater Use Restrictions	Any drinking water wells located on AIA property must be properly abandoned in accordance with ADEC decommissioning procedures within two years of this decision. AIA shall prohibit the installation of any water wells, used for drinking, cooling, washdown, or any other purposes, on the AIA either through 17 AAC 42.410 (b) (27) of the airport leasing regulations or in their individual lease agreement documents.

Description

Details

Groundwater Use Restrictions

Any drinking water wells located on AIA property must be properly abandoned in accordance with ADEC decommissioning procedures within two years of this decision. AIA shall prohibit the installation of any water wells, used for drinking, cooling, washdown, or any other purposes, on the AIA either through 17 AAC 42.410 (b) (27) of the airport leasing regulations or in their individual lease agreement documents.

ANC Amended Groundwater Use Determination

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.

Continue Close

Alaska Department of Environmental Conservation

Site Report: AIA Anchorage Airport Sitewide

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

ANC Amended Groundwater Use Determination

Missing Location Data

State of Alaska Department of Environmental Conservation