| Action Date |
Action |
Description |
DEC Staff |
| 4/21/1999 |
Update or Other Action |
Staff issued letter reviewing report for tank removal titled "FST Decommissioning Assessments, Saint Marys, Alaska", dated November 1998, and approved no further action status for one of the four tank sites (Tank 18-A-002). |
Eileen Olson |
| 9/15/1999 |
Site Characterization Workplan Approved |
Staff approved the Draft Release Investigation Plan, Saint Marys, Alaska dated July 1999, and received with FAA cover letter on August 11, 1999. The plan proposes drilling soil borings, coring bedrock, installing groundwater monitoring wells, and collecting and analyzing soil and groundwater samples at three former storage tank locations at the Consolidated Building. |
Eileen Olson |
| 2/14/2000 |
Site Added to Database |
Heating oil. |
Eileen Olson |
| 4/21/2000 |
Site Ranked Using the AHRM |
Initial ranking. |
Eileen Olson |
| 6/11/2002 |
Update or Other Action |
Project management transfered from Eileen Olson to Elizabeth Stergiou. |
Elizabeth Stergiou |
| 9/19/2002 |
Update or Other Action |
Sent general letter requesting the following documents be submitted by 10/1/02: Environmental Compliance Investigation Report and the report from the 1999 site work. |
Elizabeth Stergiou |
| 11/21/2006 |
Cleanup Level(s) Approved |
Default method 2 soil cleanup levels approved in a letter dated 11/21/06. Groundwater cleanup levels of Table C approved. |
Anne Marie Palmieri |
| 11/21/2006 |
Site Characterization Report Approved |
Remedial Investigation Report (CH2-OH, June 2000) approved this date. |
Anne Marie Palmieri |
| 11/21/2006 |
Site Characterization Report Approved |
Groundwater monitoring reports approved. Reports are dated 8/00, 12/00, and 1/02. |
Anne Marie Palmieri |
| 11/21/2006 |
Update or Other Action |
Staff has reviewed the site file and discussed all areas of potential concern with the FAA project manager. This letter approved reports, set cleanup levels, and responded to past FAA closure requests. Determinations regarding the specific areas of concern are included as separate database actions on this date. |
Anne Marie Palmieri |
| 11/21/2006 |
Update or Other Action |
Underground Storage Tank (UST) 18-A-001: Confirmation soil sample results collected during the removal of the tank in 1998 showed high levels of diesel range organics remaining in place. As documented in the RI, the soil borings advanced and groundwater monitoring wells installed around the area of the former UST showed elevated levels of diesel range organics in both the soil and groundwater. The results of the groundwater monitoring showed elevated concentrations in diesel range organics in the January 2002 report only. Additional actions need to occur at this former tank location regarding the petroleum contaminated soil and groundwater, including the sampling of the groundwater wells during the coming field season. (exerpt from 11/21/06 DEC letter) |
Anne Marie Palmieri |
| 11/21/2006 |
Update or Other Action |
Composite Building, Transformer oil stain: A 2’x3’ soil stain coming from an inactive non-Polychlorinated Biphenyl (PCB)-labeled transformer was noted during the fieldwork for the Environmental Compliance and Investigation Report in 1991. A soil sample of this stained area was collected during a site visit in May 1997 and analytical results showed that the concentrations of petroleum hydrocarbons met the approved cleanup levels. Therefore, this is not considered to be an area of concern by the department and no action is requested to be taken. (exerpt from 11/21/06 DEC letter) |
Anne Marie Palmieri |
| 11/21/2006 |
Update or Other Action |
Aboveground Storage Tank (AST) 18-A-003: This 250-gallon tank was first identified as an area with contaminated soil in the ECIR when a sample was collected for diesel range organics which had a result of 6600 milligrams per kilogram (mg/kg). The tank was removed in 1998 and the decommissioning assessment documents showed a slight exceedance of gasoline range organics in the soil. During the RI, two (2) cubic yards of petroleum-contaminated soil were removed and confirmation sample results showed that concentrations of all contaminants met the cleanup levels with the exception of one detection of benzene of 0.069 mg/kg at 1.5’ below ground surface. Given that neither of the other two (2) samples collected at shallower depths showed a detection for benzene and there are no other contaminants of concern exceeding the cleanup levels, the department believes that this soil contamination is limited in extent does not present an unacceptable risk to human health or the environment. Therefore, this tank can be conditionally closed. As there is soil present with concentrations of benzene which exceeds the department’s most stringent cleanup levels, future management of any contaminated soil should be in accordance with 18 AAC 75.325(i). (exerpt from 11/21/06 DEC letter) |
Anne Marie Palmieri |
| 6/8/2007 |
Exposure Tracking Model Ranking |
ETM ranking |
Anne Marie Palmieri |
| 8/10/2009 |
Site Characterization Workplan Approved |
Staff approved the Federal Aviation Administration Saint Mary's Groundwater Sampling Work Plan, Revision 1, July 2009. The workplan discusses collection of samples from existing groundwater moitoring wells. Contaminants of concern are RRO, GRO, and BTEX. The objective of this sampling effort is to determine of COPCs exist in the on-stie monitoring wells and to analyze natural attenuation parameters in the groundwater at the site. |
Tana Robert |
| 5/22/2013 |
Site Characterization Workplan Approved |
Staff approved the draft groundwater monitoring work plan for the FAA St. Marys Consolidated Building via email. A draft groundwater monitoring report was received by ADEC on 11/15/2013. |
Fred Vreeman |
| 8/27/2015 |
Update or Other Action |
Discussed site status with FAA project manager. Next groundwater monitoring event to occur in 2018 |
Joy Whitsel |
| 9/17/2018 |
Update or Other Action |
Received draft work plan from FAA. ADEC will review and respond. |
Erin Gleason |
| 10/5/2018 |
Document, Report, or Work plan Review - other |
ADEC has reviewed the work plan on 9/27/2018 and provided comments to FAA and their contractor. Response to comments were received on 10/5/2018. All ADEC revisions were made as requested. The work plan is now approved. |
Erin Gleason |
| 12/13/2019 |
Document, Report, or Work plan Review - other |
DEC approved the Final 2019 Groundwater Monitoring Program Report, FAA Stations in Bettles, Cape Yakataga, and St. Mary’s, AK, Dated December 2019. This report details 2019 groundwater monitoring activities at the Bettles, St. Mary’s, and Cape Yakataga FAA stations. Monitoring activities included collecting groundwater samples from existing wells at Bettles, St. Mary’s, and Cape Yakataga. Additionally, sediment samples were collected and analyzed at Cape Yakataga. One well at the Bettles site showed a cleanup level (CUL) exceedance of napthalene, but other wells exhibited no exceedances. Similarly, at the St. Mary’s site, one well exceeded the naphthalene CUL, but all other analytes were below CULs. One of the wells scheduled to be sampled at St. Mary’s was deemed unusable due to damage and subsequent low recharge. At the Cape Yakataga site, petroleum contamination remains above CULs in several wells, with contaminant concentrations increasing in some wells and decreasing in others. Several wells were not sampled due to insufficient water or the presence of free product. Additionally, several sediment samples were found to contain DDT and DDE above National Oceanic and Atmospheric Administration Screening Quick Reference Tables threshold and probable effects levels. |
Kevin Fraley |
| 6/10/2021 |
Document, Report, or Work plan Review - other |
Received work plan from FAA. ADEC will review and provide comment. The work plan includes multiple FAA sites including Bettles, Cape Yakatage, Chena, and Saint Mary. |
Erin Gleason |
| 6/28/2021 |
Site Characterization Workplan Approved |
ADEC provided comments on work plan on June 16th, 2021. FAA provided response to comments on June 22, 2021. All responses have been resolved and the work plan is approved. |
Erin Gleason |
| 12/6/2021 |
Document, Report, or Work plan Review - other |
Draft Groundwater Monitoring for FAA Stations Bettles, Puntilla, Chena NDB. Report was supposed to include Yakataga and St. Mary's, but they weren't able to get out there due to COVID restrictions. 1/5/2022 Comments sent. 2/8/2022 RTC sent to RP. 3/7/2022 approval of final report sent. |
Shonda Oderkirk |
| 11/29/2022 |
Document, Report, or Work plan Review - other |
Draft report for Cape Yakataga and St Mary's 2022 field work received. 12/8/2022 Comments sent. 12/15/2022: RTC Received. 1/3/2023: Final approval issued. |
Shonda Oderkirk |
