| Action Date |
Action |
Description |
DEC Staff |
| 8/5/1997 |
Update or Other Action |
Release investigation report dated August 5, 97. Soils contaminated by both GRO and DRO were identified but not fully characterized. |
Shah Alam |
| 9/23/1997 |
Update or Other Action |
Phase II of release investigation was conducted. Additional DRO and GRO contaminated soils were found to be commingled at least in one area. |
Shah Alam |
| 4/23/1998 |
Preliminary Assessment Approved |
(Old R:Base Action Code = SA1A - Phase I Site Assessment Approval). Reviewed the "Release Investigation Report for ERA Bethel Airport Facility" dated 8/5/1997. |
Eileen Olson |
| 4/23/1998 |
Update or Other Action |
(Old R:Base Action Code = RI - Remedial Investigation). Reviewed "Phase II Release Investigation Report for ERA Bethel Airport", dated 2/3/1998. Further site characterization work is needed to define the horizontal and vertical extent of the GRO or DRO contamination. |
Eileen Olson |
| 4/23/1998 |
Update or Other Action |
ADEC/CS wrote ERA Aviation requesting for additional site characterization. Matrix cleanup level cannot be established until contamination is characterized. |
Shah Alam |
| 5/12/1998 |
Site Added to Database |
Site added by staff. |
Eileen Olson |
| 5/14/1998 |
Cleanup Plan Approved |
ADEC/PERP wrote to Gilfilian approving a work plan to remove and characterize Jet A fuel contaminated soil. |
Shah Alam |
| 6/11/1998 |
Update or Other Action |
Phase I Environmental Site Assessment (historical use) report dated June 2, 98 prepared by Gilfilian submitted to ADEC. |
Shah Alam |
| 9/18/1998 |
Meeting or Teleconference Held |
Meeting with Eileen Olson and Bob Dreyer, teleconference with Bob Gilfilian. Also spoke with Peggy McClusky. Prepared letter approving Dames and Moore's workplan on site investigation. Bob Dreyer approving a work plan for Gilfilian Engg for soil excavation. |
Shah Alam |
| 1/14/1999 |
Meeting or Teleconference Held |
A meeting was held on January 14, 1998 at ADEC Anchorage office to discuss issues related to Bethel ERA contaminated site at the Bethel Airport. Bethel ERA conducted contaminated soil excavation through their contractor, Gilfillian Engineering, who assumed an ADEC cleanup level of Matrix Level B. Meeting participants were Ron Stroman, Korbey Hunt, Peggy McClusky, Richard H. Smith, PAUL R. DWORIAN, Murphy Forner, Robert Gilfilian, Steve Rebillard, Shah Alam, Jim Frechione, Bob Dreyer and Eileen Olson. |
Shah Alam |
| 2/9/1999 |
Cleanup Level(s) Approved |
ADEC issued a cleanup decision letter to Alaska Airlines. |
Shah Alam |
| 2/11/1999 |
Update or Other Action |
Dames and Moore submitted soil cleanup technologies and engineering control options for this site. |
Shah Alam |
| 2/11/1999 |
Meeting or Teleconference Held |
Teleconference with Peggy McCluskey and Paul Dworian to discuss Bethel ERA site. ADEC asked them to submit a corrective action plan considering cleanup levels and proposed cleanup technologies. |
Shah Alam |
| 4/14/1999 |
Cleanup Plan Approved |
ADEC approved a corrective action workplan. |
Shah Alam |
| 5/14/1999 |
Update or Other Action |
Bob Dreyer (ADEC) wrote to Gilfillian requesting additional information on corrective action plan for stockpiled soil. |
Shah Alam |
| 6/16/1999 |
Cleanup Plan Approved |
ADEC approved a modified a work plan. The excavation will be to a depth of 12 feet in stead of six feet. |
Shah Alam |
| 6/17/1999 |
Update or Other Action |
Construction practice requires a liner under the building covering the excavation. The liner under the building will cover a larger area than the liner at the bottom of the excavation. ADEC agreed that the liner under the building will achieve the same purpose as the liner at the bottom of the excavation. |
Shah Alam |
| 6/18/1999 |
Meeting or Teleconference Held |
ADEC met with Ron Stroman, Bob Norton, Paul Dworian (teleconference) and Bob Dreyer to discuss Bethel ERA contaminated site. ADOT is concerned with volume of contaminated soils to be stored and disposed. Total soil volume to be excavated is 10000 cubic yards of which maximum 2000 cubic yards may be above the established cleanup level. |
Shah Alam |
| 7/12/1999 |
Update or Other Action |
Carl with Davies construction (562-2336) called to clarify the concerns related to stockpiled soil management. |
Shah Alam |
| 10/19/1999 |
Site Ranked Using the AHRM |
Site ranked. |
Shah Alam |
| 3/15/2000 |
Update or Other Action |
ADEC received a final cleanup report. The report describes excavation and off-site stockpiling of contaminated soils. |
Shah Alam |
| 7/26/2000 |
Update or Other Action |
ADEC project manager, Shah Alam, visited the site. |
Shah Alam |
| 8/9/2000 |
Update or Other Action |
ADEC has reviewed a final report dated March 15, 2000 and requested a corrective action workplan to remediate contaminated soil stockpiles, and, a schedule to install a SVE system for contaminated soils left in place. Following are the comments on the report:
1. Gasoline range organics (GRO) contaminated soils in excess of site-specific alternative cleanup levels remain at the base of the excavation (soil samples SS-10 and SS-10 Dup.), at about 10 feet below the ground surface. A site cleanup workplan dated March 1999 had previously proposed that the remaining contaminated soil at the site would be treated via in situ soil vapor extraction (SVE).
2. Approximately 2800 cubic yards of contaminated soil and 4700 cubic yards of suspected clean soil were removed from the site and were stockpiled off-site on ADOT property. Additional sampling to characterize and remediation of these stockpiles are required. |
Shah Alam |
| 4/9/2001 |
Site Characterization Report Approved |
Site characterization report completed to characterize hydrocarbons in soil excavated during terminal construction project. Plans for cleanup and remediation to follow. |
Renee Evans |
| 3/21/2002 |
Site Ranked Using the AHRM |
Database changes: added drinking water information to comments field, changed population density from 5 to 8, corrected latitude and longitude, added quadrant, section, township, range and meridian. |
Former Staff |
| 2/3/2006 |
Update or Other Action |
The Department of Environmental Conservation, Contaminated Sites Program, (DEC) has completed review of the document titled: “Environmental Baseline Survey and Corrective Action Plan, Alaska Airlines Terminal, Bethel Airport Facility dated November 28, 2005 prepared by URS Corporation. There are two areas of investigation proposed at the Alaska Airlines Terminal Building. The northern area is the former location of two 1,000 gallon aboveground storage tanks (AST’s) that were removed in 1997. Historical documents indicate that a drum storage area, an aboveground fuel supply line and three other AST’s and dispensers were located on the northern side of the terminal building. Review of file documentation for the southern area indicates that two AST’s were located near the southern side of the terminal building along with a Jet-A fuel supply line. Between 1997 and 1999 there have been multiple investigative activities completed at the northern area of the terminal building. Soil impacted by gasoline range organics (GRO), diesel range organics (DRO), and benzene above applicable clean up levels established in 18 AAC 75.341 Table B1 have been documented. Soil removal activities were implemented and soil stockpiled near the site. Soil removal did not achieve applicable clean up levels and contaminated soil remains in the ground. Data gaps in soil characterization have been identified resulting in the need for further site characterization. Soil borings advanced on the northern side of the terminal building have identified permafrost at depth with no measurable groundwater encountered. Based on the available data, permafrost appears to be continuous beneath the site. Investigation at the southern area of the terminal building was limited to four field screening data points with no laboratory analysis. These field screening results collected during a 2001 site investigation performed by URS indicate the potential for contaminant impacts to soil in this location. It appears from the data provided that data gaps exist in the site characterization of soil in both the north and south areas of the terminal building. Previous soil borings advanced to permafrost have not identified measurable groundwater and therefore additional groundwater investigations would not appear warranted. No known drinking water wells are reportedly within one mile of the site. Site is served by community water and sewer. DEC concurs with the conceptual approach outlined in the above referenced report. |
David Pikul |
| 3/21/2006 |
Meeting or Teleconference Held |
DEC attended a meeting with the RP (Alaska Airlines) and the land owner (ADOT&PF). Alaska Airlines will proceed with actions to move to a conditional closure at that site. Conversation included potential for ADOT&PF responsibility for soil contamination at the south end of the terminal.
|
David Pikul |
| 4/28/2006 |
Update or Other Action |
Vapor Intrusion Pathway Analysis submitted by URS for Alaska Airlines. New terminal area is underlain by a fuel-proof liner and at least 6 feet of clean fill, effectively eliminating the vapor intrusion pathway. CSM graphic and text submitted. |
Bill O'Connell |
| 2/1/2007 |
Update or Other Action |
The contaminated stockpile associated with this site was moved to an area operated by ADOT, who has assumed responsibility for the handling of this material. The stockpile is typically referred to as the "1999 Excavation Stockpile" and consists of approximately 2,500 cy of material. Samples collected from this stockpile in 2000 had DRO up 2,130 mg/kg. |
Bill O'Connell |
| 2/1/2007 |
Exposure Tracking Model Ranking |
|
Bill O'Connell |
| 2/2/2007 |
Conditional Closure Approved |
The Department of Environmental Conservation, Contaminated Sites Program (ADEC) has reviewed the administrative records for ERA Aviation, Bethel Airport Facility. This site had been contaminated by the release of a hazardous substance; however, based on the information provided to date, ADEC has determined that the ERA Aviation, Bethel Airport Facility can be closed subject to the conditions outlined in the database entry below. The hazardous substance contamination has been adequately addressed and does not pose an unacceptable risk to human health or the environment. |
Bill O'Connell |
| 2/2/2007 |
Institutional Control Record Established |
The cleanup actions conducted at the ERA Aviation, Bethel Airport Facility were effective in removing the majority of impacted soil. There is a minor amount of contamination remaining above established cleanup levels but ADEC has determined there is no unacceptable risk to human health or the environment and this site will be conditionally closed. However, additional cleanup may be required when the terminal building is removed.
This decision is subject to the following conditions:
1. A Notice of Residual Contamination will be recorded on the ADEC database to document that there is residual contamination remaining on site above the most stringent ADEC cleanup levels;
2. Any proposal to transport soil off site requires ADEC approval in accordance with 18 AAC 75.325(i)
3. Alaska Airlines must notify ADEC if the existing structure is removed.
In accordance with 18 AAC 75.380(d)(2), this determination does not preclude ADEC from requiring additional assessment and/or cleanup action if future information indicates that this site may pose an unacceptable risk to human health or the environment.
|
Bill O'Connell |
| 10/27/2009 |
Update or Other Action |
Reviewed Environmental Document Review To Establish Baseline Conditions, Alaska Airlines Termianl Lease, Bethel Alaska, submitted to ADOT&PF by Ak Air prior to renewing their lease. THe document summarizes the current environmental status of the site, indicating contamination remains beneath the building (north side) near the parking lot (south side) and at the Ramp Spill Area, where contamination is primarily beneth the pavement. |
Bill O'Connell |
| 6/12/2012 |
Institutional Control Compliance Review |
An IC review was conducted on this site and the staff assigned was changed from Bill O'Connell to IC Unit. |
Evonne Reese |
| 12/4/2013 |
Institutional Control Update |
An IC reminder letter was issued to the responsible party on this date. |
Kristin Thompson |
| 12/18/2013 |
Institutional Control Update |
Received a call from an Alaska Airlines representative to let us know that the site conditions remain the same and wanting to check to see if there was anything else they needed to do. |
Evonne Reese |
| 6/29/2016 |
Institutional Control Update |
I was contacted by SLR Consulting representing Alaska Airlines in a project that involves trenching activities near the ERA Aviation Facility. They want to make sure they remain in compliance with all institutional controls for the site. If contaminated soil is encountered they have plans in place for field screening, evaluating conditions and sampling if necessary. The documentation for this project has been placed in the electronic file.
|
Evonne Reese |
| 9/15/2016 |
Institutional Control Update |
ADEC was contacted by SLR Consulting representing Alaska Airlines letting us know that the trenching work at the Bethel airport, as discussed in previous communications, will be conducted at the end of next week. Although the trench is located away from areas of known contamination, SLR will be on site to screen the soil and will notify ADEC if impacted soil is encountered. |
Kristin Thompson |
| 4/22/2019 |
Institutional Control Update |
An Institutional Controls reminder letter was mailed to the responsible party on this date. |
Mossy Mead |
