Site Report: AFSC AIA C-Concourse
| Site Name: | AFSC AIA C-Concourse |
|---|---|
| Address: | Ted Stevens Int'l Airport, Anchorage, AK 99502 |
| File Number: | 2100.38.028.10 |
| Hazard ID: | 2728 |
| Status: | Active |
| Staff: | Shawn Tisdell, 9074512752 shawn.tisdell@alaska.gov |
| Latitude: | 61.174572 |
| Longitude: | -149.979350 |
| Horizontal Datum: |
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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.
Problems/Comments
Diesel contaminated soils widespread as a result of leaking underground fuel pipelines and vaults.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 12/22/1999 | Site Added to Database | Diesel. | 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 to 0.8 from 0.4 and GW Exposure Index Value from 0.4 to 1 as monitoring wells are contaminated. | Eileen Olson |
| 2/26/2007 | Exposure Tracking Model Ranking | Baseline ranking | Todd Blessing |
| 7/3/2007 | 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 |
| 6/3/2008 | Update or Other Action | DEC staff reviewed a field summary report for Remote Overnight Parking (RON) 7-11. RON 7-11 area is located roughly 1,000 feet west of Concourse C terminal. Contaminated soil was identified and left in place (along the former fuel line alignment located near the Left 300 foot offset). Approximately 525 cubic yards of contaminated soil was transported to ANC's landfarm area to be treated. | Todd Blessing |
| 6/3/2008 | Update or Other Action | DEC staff reviewed a field summary report for Remote Overnight Parking (RON) 7-11. RON 7-11 area is located roughly 1,000 feet west of Concourse C terminal. Contaminated soil was identified and left in place (along the former fuel line alignment located near the Left 300 foot offset). Approximately 525 cubic yards of contaminated soil was transported to ANC's landfarm area to be treated. | Todd Blessing |
| 6/3/2008 | Update or Other Action | DEC staff reviewed a field summary report for Remote Overnight Parking (RON) 7-11. RON 7-11 area is located roughly 1,000 feet west of Concourse C terminal. Contaminated soil was identified and left in place (along the former fuel line alignment located near the Left 300 foot offset). Approximately 525 cubic yards of contaminated soil was transported to ANC's landfarm area to be treated. | Todd Blessing |
| 8/26/2008 | Update or Other Action | DEC staff issued a letter on August 26th requesting that ASIG hire a qualified person to construct a conceptual site model for the South Terminal, Anchorage International Airport. | Todd Blessing |
| 11/19/2010 | Conceptual Site Model Submitted | In response to the 8/26/08 request for a conceptual site model (CSM) by ADEC, ASIG/AFSC's consultant, Shannon & Wilson, completed and submitted an environmental document review and CSM dated October 14, 2010. The CSM identified potential for incidental soil ingestion pathway by construction workers if the soil is disturbed. Also the outdoor air pathway could be possible because contamination exists within 15 bgs, if the asphalt/concrete were removed. All other pathways are considered incomplete. | Darren Mulkey |
| 6/28/2013 | Document, Report, or Work plan Review - other | Reviewed Environmental Management Inc.'s April 2013 request for closure. DEC requested EMI to provide additional details before we will consider site closure. | Jacob Gano |
| 9/25/2013 | Site Visit | ADEC staff conducted a site visit to observe the current land use and become familiar with the site. | Meghan Dooley |
| 5/8/2015 | Meeting or Teleconference Held | Site visit to the C Concourse site. | Lisa Krebs-Barsis |
| 7/25/2017 | Meeting or Teleconference Held | DEC Staff met with ASIG and consultant AECOM to discuss status of site and path forward. A letter dated September 22, 2017 documents the meeting and subsequent communications. The file for this site will be reviewed for status and potential closure. | Wendy Hansen |
Contaminant Information
| 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. |
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. |
No associated sites were found.