| Action Date |
Action |
Description |
DEC Staff |
| 1/15/1992 |
Site Added to Database |
This site is included in the state EPA Eielson FFA 100.38.011. |
Former Staff |
| 12/3/1992 |
Update or Other Action |
Received documents from EAFB on OU 3, 4 and 5. These documents are the quality-assured field sampling data. Markey is now reviewing them. Item # 35 and 36, from the CS/DOD bookcase. |
Rielle Markey |
| 2/23/1993 |
Update or Other Action |
(Old R:Base Action Code = RPL2 - Site Information Request Letter). Sent PRP-CS database Notification Letter to RP requesting update and more environmental information concerning contaminated site. Department of the Air Force responded with update of requested site information on 3-17-93. |
Jeff Peterson |
| 7/15/1993 |
Update or Other Action |
(Old R:Base Action Code = DD - Decision Document (CERCLIS)). Letter sent in response to Draft RI document. Soil sampled at this site did not show many soil contaminants expected at a fire training pit. This site will be considered with LF03 for GW remediation. |
Rielle Markey |
| 8/12/1993 |
Meeting or Teleconference Held |
Meeting in Seattle with EAFB and EPA. This site will go into a Feasibility study with LF03. |
Rielle Markey |
| 10/18/1993 |
Site Ranked Using the AHRM |
Initial ranking. |
Former Staff |
| 9/30/1995 |
Update or Other Action |
Eielson AFB Operable Units 3, 4 and 5 ROD includes 20 source areas that have been combined because of commonalties in contamination. These source areas are DP44, WP45, SS57, SS56, SS61, DP25, ST27, WP33, SS35, SS36, SS37, SS39, SS63, ST58, SS64, LF02, LF03, FT09, LF04 and LF06. |
Clint Adler |
| 2/16/1996 |
Update or Other Action |
(Old R:Base Action Code = RA - Remedial Action). Received Remedial Action Workplan. |
Clint Adler |
| 4/15/1996 |
Update or Other Action |
(Old R:Base Action Code = RD - Remedial Design). Air Force Comments on Draft Remedial Design for OU-3, 4 and 5. |
Clint Adler |
| 5/10/1996 |
Update or Other Action |
(Old R:Base Action Code = RD - Remedial Design). OU-3, 4, and 5, RDRA Workplan, EAFB. |
Clint Adler |
| 6/28/1996 |
Site Characterization Report Approved |
(Old R:Base Action Code = FS - Feasibility Study (General)). Markey/Adler: Remedial Action Objectives Technical Memorandum, Remedial Action Objectives, OU-5, Feasibility Study, Fort Wainwright, Alaska, Contract DACA85-94-D-008, Delivery Order 0013, received June 28, 1996. |
Rielle Markey |
| 7/15/1996 |
Risk Assessment Report Approved |
Draft Post-wide Risk Assessment, Fort Wainwright, Alaska, two documents received July 15 and July 18, 1996. |
Rielle Markey |
| 9/24/1996 |
Record of Decision |
Final Site-Wide Record of Decision, September 1, 1996; two documents received. |
Rielle Markey |
| 9/24/1996 |
Institutional Control Record Established |
When the OU-3,4,5 ROD was signed in 1995, it established institutional controls for this site. These ICs include: a prohibition on the installation or use of drinking water wells, a requirement that all monitoring wells are secured with locks, any activity that may result in exposure to contaminated GW or moving contaminated GW requires approval of CES/CEV, any activity disturbing a remedial action requires approval of CES/CEV, any activity that may result in exposure to or removal of contaminated soil requires approval of CES/CEV, if contaminated soil or GW are removed from the source, they must be disposed of or treated in accordance with regulation, and a requirement to notify ADEC and EPA of any proposal to change the existing land use or land use controls at the site. |
Ann Farris |
| 3/24/1997 |
Update or Other Action |
Site updated by Shannon and Wilson, based on the Air Force Relative Risk Evaluation Worksheet dated 10/23/95. |
S&W |
| 12/19/2001 |
Long Term Monitoring Established |
Landfarm is closed, site is in long-term monitoring. Staff received draft 2001 Monitoring Report. 5 wells sampled for VOCs, GRO, DRO, SVOCs, and metals. 1 well sampled for just PCBs. Benzene (15ppb), PCE (13 ppb), TCE(22 ppb), and vinyl chloride (2.37 ppb) found above MCLs each in just one well, but all different wells. |
Ann Farris |
| 12/26/2001 |
GIS Position Updated |
Worked with Heather Goldman obtaining GIS latitude and longitude from 1:63,300 topographic map. |
Heather Goldman |
| 1/14/2002 |
Site Number Identifier Changed |
Changed Workplan from X1 to X9 to reflect presence of a hazardous substance. |
Ann Farris |
| 9/19/2003 |
Meeting or Teleconference Held |
Staff attended a meeting with Air Force and EPA personnel to resolve comments on the draft Eielson Five-Year Review. Issues with the document included event-driven groundwater sampling at several contaminated sites, which we denied pending further clarification of the process, and closing numerous sites under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), but keeping them open under the State until 18 AAC 75 diesel range organic cleanup levels are met. |
Ann Farris |
| 1/9/2004 |
Update or Other Action |
Staff is reviewing the draft final Five-Year Review for Eielson Air Force Base. The majority of ADEC’s comments on the original draft document have been addressed. There are a few items that are still not satisfactory, but staff expects to get resolution on these items in the next week and have a document ready for signature by the end of the month. |
Ann Farris |
| 4/21/2004 |
Meeting or Teleconference Held |
Staff met with personnel from Eielson Air Force Base regarding some dewatering activities planned for this summer. One project was determined to not be near any contaminated sites so is being dealt with under the normal wastewater discharge permits. The second project actually calls for installing a drinking water well for a dog kennel and the contractor is requesting to discharge the development water directly to the land. Staff is working with the Air Force personnel and the contractor to ensure the well is in a safe location. |
Ann Farris |
| 8/26/2004 |
GIS Position Updated |
Position acquired using "Base MW Map 2004" CAD drawing from EIAFB georeferenced to QuickBird Satellite imagery, NAD27. |
Torsten Ernst |
| 10/11/2004 |
GIS Position Updated |
Coordinates updated with values acquired by Emily Youcha during a site visit using a handheld GPS unit. |
Torsten Ernst |
| 6/24/2005 |
Update or Other Action |
Staff recieved the workplan for the 2005 sitewide monitoring. Five wells will be sampled for VOCs, SVOCs, and metals. Lower detection limits are needed for VOCs and SVOCs. Sample results from previous sampling events indicate detection limits for vinyl chloride, pentachlorophenol, and bis(2-ethylhexyl)phthalate were above cleanup levels. ADEC recommended the use of EPA Method 8270 SIM to lower detection limits. This years sampling event will focus on monitoring potential contaminant migration toward Garrison Slough. |
Emily Youcha |
| 6/24/2005 |
Update or Other Action |
Staff received the results of the 2004 sampling efforts. Samples were collected from 6 wells for VOC, SVOC, and metals analysis. VOCs remain in the ground water at concentrations above cleanup criteria. Sample results from 03M19 show an increase in benzene concentration since the well was installed in 2003. VOCs exceeded cleanup criteria in the LF03 source area well 03M08 in 2002 and trace amounts of cis-1,2-DCE were detected in six 2004 samples collected between the source areas and Garrison Slough. |
Emily Youcha |
| 11/22/2005 |
Meeting or Teleconference Held |
EPA and ADEC would like Eielson to define the solid waste management units more clearly for LF03/FT09. Eielson indicated that burial areas exist further to the west than the existing boundaries and currently contamination occurs in that western area, approaching Garrison Slough. |
Emily Youcha |
| 3/1/2006 |
Update or Other Action |
Staff had a telephone call with Eielson AFB to discuss their long-term monitoring program optimization. Eielson would like to apply "event-driven monitoring" to many benzene-contaminated sites, where monitoring would occur when the concentration reached the MCL at a predicted time. They are using MAKSENS to do the statistical regressions and come up with a slope indicating benzene degradation rates. This slope would predict when the concentrations would reach the MCL and monitoring would occur at that time only. They would like to apply this slope to other "similar sites" to predict when the concentrations would reach the MCL. Eielson submitted the concept to AFCEE for review, but apparently AFCEE requested more data, which Eielson did not have. At this point, DEC has not reviewed any data on this concept and requested Eielson submit a report showing the data and justification of their assumptions. |
Emily Youcha |
| 3/6/2006 |
Update or Other Action |
Staff reviewed the 2005 long-term monitoring results. Well 03M08, located within the landfill boundary on the eastern edge, shows decreasing concentrations of benzene and TCE. Well 03M13, located downgradient and outside the boundary of the landfill and the firetraining area, shows an overall decreasing benzene concentration trend since 1989, but stable since 2001. Well 03M019, also located downgraident and outside the boundary of the landfill and the firetraining area and adjacent to Garrison Slough, shows a drop in benzene concentrations from 11 ppb in 2004 to 7.0 ppb in 2005. The area of contaminated ground water to the northwest of LF03 source area (near Garrison Slough) is of some concern to DEC. This area of benzene,TCE, and PCE-contaminated ground water is outside of the defined LF03 source area boundary. Upgradient wells within the LF03 boundary (03M07, 03M06, 03M05, and 03M02) have been shown to be clean during the past 10 years of sampling. This general area is also thought to have additional buried drums and debris outside the boundary of LF03. It is unclear as to whether the contamination migrated out of the LF03 boundary or is from an additional source area; DEC requested additional clarification regarding this issue within the report text. The results of the data show the need for properly defining and characterizing burial areas or solid waste management units, and delineating and tracking contaminant plumes over time. |
Emily Youcha |
| 7/6/2006 |
Update or Other Action |
ADEC agreed to decrease sampling of the North Boundary Wells from annual sampling to biennial. Upcoming measurements will be summer 2007, 2009, 2011, etc. Concentrations of VOCs, SVOCs, and metals in the sentinel wells have been monitored annually since 1992 and there has been no detection of contamination. |
Emily Youcha |
| 9/25/2007 |
Meeting or Teleconference Held |
Contaminated Sites staff participated in a facilitated three-party meeting with the Air Force and Environmental Protection Agency (EPA) covering the environmental restoration at Eielson Air Force Base. The meeting was held in Seattle at the EPA Region 10 office. CS and the facilitator called for the meeting due to poor communication between the three parties and growing disagreements on matters fundamental to regulatory oversight on Eielson. Initially, each of the three parties was given an opportunity to talk generally about their involvement with the work at Eielson and their concerns. This lead to discussions of the Federal Facility Agreement (FFA) between the parties for base, as it appears that each party interprets specific sections of the FFA differently. Other topics discussed included the applicability of Freedom of Information Act exclusions applied to draft documents submitted to DEC, Eielson's plans for changing the frequency of groundwater monitoring for selected contaminated sites, vapor intrusion as a pathway to reconsider in the upcoming five-year review of records of decision, challenges posed by enforcing institutional controls as part of site remedies, and spill reporting coordination with DEC. |
Deborah Williams |
| 5/7/2008 |
Exposure Tracking Model On Hold |
This site is combined with LF03 and is ranked under that Database entry. |
Deborah Williams |
| 7/14/2008 |
Meeting or Teleconference Held |
ADEC participated in Eielson's 5 year ROD Review with EPA and Eielson. The sites covered in the ROD Review were the following: ST20, ST48, SS50-52, ST10/SS14, ST13/DP26, DP44, WP45/SS57, ST56, SS61, DP25, ST58, LF03/FT09, WP38 and SS67. Bioventing systems for ST10/SS14 and ST13/DP26 will cease operation during the summer of 2008. ADEC is concerned about LTM issues with SS35 and SS37 because of the potential for spills to be released from buried containerized wastes which are present at both of these sites. The vapor intrusion pathway will be evaluated at many of the sites where there are volatile compounds as a COC at the site and where there are potential receptors. All of these sites will be incorporated into Eielson's Land Use Control plan for the Base and the long term monitoring will be Event Driven Monitoring Program. |
Deborah Williams |
| 11/24/2008 |
CERCLA ROD Periodic Review |
ADEC issued a letter of concurrence on the 2008 Five-Year ROD review for Eielson AFB. In the letter ADEC concurred with the current remedies but recommends further work on the following: the vapor intrusion pathway needs to be evaluated for all potential receptors at WP45/SS57 site along with further evaluation of the selected remedy to ensure the Remedial Action Objectives are going to be met. The buried drums remaining at SS35 may still contain product that may pose a potential risk to ecological and human health risk in the future. The area of buried drums identified outside of SS37 may pose a threat of an imminent release of hazardous substances and warrants further investigation or response action. As stated in the 2008 Five-Year ROD Review, the overall long-term protectiveness determination for the Sitewide OU/Garrison Slough remedy will be further investigated. A Land Use Control Management Plan should be developed and implemented. |
Deborah Williams |
| 6/14/2011 |
Site Visit |
Contaminated Sites staff participated in an all-day site visit that included LF03/FT09, ST10/SS14, DP25, ST27, SS35, SS37 and the stockpile containment area. Drums were seen in and adjacent to the pond at SS35 and both petroleum and biogenic sheens were observed on the surface of the pond. All stockpiles in the containment area were covered but two stockpiles were not labeled and from unknown locations |
Kathleen Beutel |
| 6/14/2011 |
Site Visit |
Contaminated Sites staff participated in an all-day site visit that included LF03/FT09, ST10/SS14, DP25, ST27, SS35, SS37 and the stockpile containment area. Drums were seen in and adjacent to the pond at SS35 and both petroleum and biogenic sheens were observed on the surface of the pond. All stockpiles in the containment area were covered but two stockpiles were not labeled and from unknown locations |
Kim DeRuyter |
| 5/7/2013 |
Site Visit |
Site visit conducted in preparation for the Five Year Review. No changes in site conditions were noted. Discussed the fact that the liners had been in place since the mid 1990's. |
Kim DeRuyter |
| 1/30/2014 |
Conceptual Site Model Submitted |
Conceptual Site Model Update (Draft) for sites LF03/FT09 and SS37 Received 1/30/14. Due to close proximity of sites, LF03/FT09 and SS37 are all contained in one report. See LF03 (107.38.209.) for additional information on this site. |
Anna Iverson |
| 1/30/2014 |
Update or Other Action |
Site is managed in conjunction with LF03. Look at 107.38.029 for additonal information. |
Kim DeRuyter |
| 2/11/2014 |
Document, Report, or Work plan Review - other |
2012-Final installation-wide monitoring program (IWMP) report received June, 24 2013. See LF03 (107.38.209.) for additional information |
Anna Iverson |
| 5/1/2014 |
Document, Report, or Work plan Review - other |
2013-Draft installation-wide monitoring program (IWMP) report received March, 26 2014. See LF03 (107.38.209.) for additional information |
Anna Iverson |
| 9/22/2015 |
CERCLA RI Plan Approved |
Joint approval issued by EPA and DEC for the final "Remedial Investigation / Feasibility Study Management Plan For Operable Units 3, 4, and 5 Source Areas, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska" dated September 2015 (OU 3, 4 & 5 RI/FS MP). The OU 3, 4 & 5 RI/FS MP describes planned remedial investigations at 23 contaminated sites at Eielson Air Force Base, including FT09. |
Melinda Brunner |
| 9/22/2015 |
CERCLA RI Plan Approved |
DEC and EPA jointly approved the "2015 Annual Field Sampling Plan, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska" dated September 2015 (FSP). The FSP describes remedial investigations planned for 2015 at 21 contaminated sites at Eielson Air Force Base, including FT09. The FSP is meant to be used in conjunction with the appropriate remedial investigation/feasibility study (RI/FS) management plan(i.e. OU 3,4,& 5) and the Programmatic Quality Assurance Project Plan. |
Melinda Brunner |
| 7/22/2016 |
Institutional Control Compliance Review |
DEC and EPA Approved the Final 2016 Installation-Wide Monitoring Program Quality Assurance Project Plan Addendum No. 5. The IWMP QAPP Add. 5 updates the 2012 IWMP QAPP for the 2016 field season. Changes and additions to the existing network of monitoring wells were described. |
Monte Garroutte |
| 8/5/2016 |
Document, Report, or Work plan Review - other |
DEC Reviewed the OU 3,4,5 RI/RA report. This report summarizes the characterization efforts for multiple sites. |
Monte Garroutte |
| 4/25/2017 |
Update or Other Action |
DEC reviewed and provided comments on the Draft Programmatic Quality Assurance Project Plan, Addendum No. 2, Eielson Air Force Base, Alaska (March, 2017). |
John O'Brien |
| 7/18/2017 |
Document, Report, or Work plan Review - other |
DEC reviewed and provided comments on the Installation-Wide Monitoring Program, 2016 Groundwater Monitoring Report, Eielson Air Force Base, Alaska (June, 2017). |
John O'Brien |
| 8/6/2018 |
CERCLA ROD Periodic Review |
DEC evaluated "Fifth Five-Year Review Report for Eielson Air Force Base, Alaska" draft dated April 2018 and issued comments. |
Bri Clark |
| 12/19/2018 |
Document, Report, or Work plan Review - other |
DEC reviewed and issued a secondary round of comments on the, "Draft Final Supplemental Remedial Investigation/Risk Assessment Report for OU3,4,5 Source Areas, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska," dated October 2018. |
Bri Clark |
| 12/19/2018 |
Document, Report, or Work plan Review - other |
DEC reviewed and provided comments on the "Draft Installation-Wide Monitoring Program Quality Assurance Project Plan, Addendum No. 8, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska," dated November 2018. |
Bri Clark |
| 2/13/2019 |
Institutional Control Periodic Reporting |
DEC and EPA approved the Installation-Wide Monitoring Program 2017 Groundwater Monitoring Report, Eielson Air Force Base, Alaska, dated January 2019. |
Bri Clark |
| 3/4/2019 |
Institutional Control Periodic Reporting |
DEC issued comments on the Draft Installation-Wide Monitoring Program 2018 Groundwater Monitoring Report, Eielson Air Force Base, Alaska, dated January 2019. This report describes the groundwater monitoring activities conducted installation-wide in 2018. |
Bri Clark |
| 10/17/2019 |
Document, Report, or Work plan Review - other |
DEC provided a response to the air force responses to DEC comments for the Supplemental Remedial Investigation/Risk Assessment Report for OU3,4,5 Source Areas, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska. A comment resolution meeting was recommended. |
Dennis Shepard |
| 8/11/2020 |
Document, Report, or Work plan Review - other |
DEC received a response to comments and a Final Revision 1 Supplemental Remedial Investigation/Risk Assessment Report for OU- 3,4,5 Source Areas, Eielson Performance Based Remediation, Eielson Air Force Base, Alaska, dated August 2020. This report summarizes remedial investigation (RI)/risk assessment (RA) activities conducted from 2015 through 2018 at Source Areas LF001, LF002, LF003/FT009, LF004, LF006, WP032, WP033, SS036, SS037, DP044, WP045/SS057, DP055, ST056, SS061, and SS064 on Eielson Air Force Base. |
Dennis Shepard |
| 4/27/2022 |
Meeting or Teleconference Held |
DEC met with the Air Force and contractor and with EPA to discuss the ongoing PFAS RI scope of work for the validated PFAS source areas. Status of the results from borings installed in 2021 was discussed and horizontal step-outs and vertical step-downs were proposed. |
Dennis Shepard |
| 4/29/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #9 (FCF-RI-9) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepout boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 5/24/2022 |
Document, Report, or Work plan Review - other |
A Triad meeting was held to review sample results from transects of borings installed for the PFAS RI, and to select locations for step-outs or step-downs based on the sampling results to date. |
Dennis Shepard |
| 6/13/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #12 (FCF-RI-12) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepout boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 6/23/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #13 (FCF-RI-13) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed a revised stepout boring location for the PFAS remedial investigation. |
Dennis Shepard |
| 7/18/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #14 (FCF-RI-14) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepdown depths for boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 7/18/2022 |
Document, Report, or Work plan Review - other |
A Triad meeting was held to review sample results from transects of borings installed for the PFAS RI, and to select locations for step-outs or step-downs based on the sampling results to date. |
Dennis Shepard |
| 8/29/2022 |
Document, Report, or Work plan Review - other |
DEC provided backcheck review comments for the Final Supplemental Remedial Investigation Work Plan, Eielson Air Force Base, Alaska (August 2022). The Supplemental Remedial Investigation (RI) Work Plan describes the 2022 RI activities to be conducted at Eielson Air Force Base, Alaska. The scope of the Supplemental RI is to address current data gaps at the CERCLA source areas on Eielson AFB for all operating units. |
Dennis Shepard |
| 9/6/2022 |
Document, Report, or Work plan Review - other |
A Triad meeting was held to review sample results from transects of borings installed for the PFAS RI, and to select locations for step-outs or step-downs based on the sampling results to date. |
Dennis Shepard |
| 9/19/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #15 (FCF-RI-15) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed revised step-out boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 9/19/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #10 (FCF-RI-10) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepout boring locations and updated worksheets #17 & #18 of the approved work plan for the PFAS remedial investigation. |
Dennis Shepard |
| 9/19/2022 |
CERCLA RI Plan Approved |
EPA and DEC provided a joint approval for the Final Supplemental Remedial Investigation Work Plan Eielson Air Force Base, Alaska (September 2022). The scope of this Supplemental RI is to address current data gaps at the CERCLA source areas on Eielson AFB. The data gaps are generally related to the incomplete characterization of site contaminants under the 2015-2021 Performance Based Remediation (PBR) and emerging contaminants identified since the 2015-2021 PBR. |
Axl LeVan |
