Site Report: DESC MP 20.3 Eielson Pipeline Release - Moose Creek

Site Name:	DESC MP 20.3 Eielson Pipeline Release - Moose Creek
Address:	MP 20.3 Eielson Pipeline; Moose Creek, Moose Creek, Fairbanks, AK 99701
File Number:	100.38.208
Hazard ID:	4327
Status:	Active
Staff:	Axl LeVan, 9074512156 axl.levan@alaska.gov
Latitude:	64.717767
Longitude:	-147.170514
Horizontal Datum:

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

Historical release (early 1980s) of JP4 fuel was discovered during the construction of a building foundation. The Eielson pipeline is owned by the U.S. Army Garrison Alaska. Department of Defense determined Defense Energy Support Center (now DLA-Energy) to be the responsible party. The affected area is approximately 5 acres located between Baker Road and the intersection of the pipeline and Moose Creek Avenue. The pipeline transported a variety of fuels (arctic grade diesel fuel, aircraft turbine JP-4 fuel, automotive combat gasoline, Avgas grade 115/145, JP-4, JP-8, vehicle leaded motor gasoline [Mogas] and unleaded Mogas) and thus contaminants of potential concern are BTEX, GRO, DRO, RRO, PAHs, EDB and lead. Soil and groundwater have been sampled in several times since 2003. Groundwater was sampled in summer 2011, 2012, and 2016. The most recent results from 2016 showed drinking water sample results were below 18 Alaska Administrative Code (AAC) 75.345 Table C cleanup levels (ADEC. 2017a), protective of groundwater and drinking water. Very low level concentrations of gasoline range organic compounds (GRO), diesel range organic compounds(DRO), and total lead were detected in various pre-GAC and tap water samples. All other drinking water analytes were not detected in the samples. In soil, benzene, GRO and DRO were detected at concentrations above cleanup levels. A Remediation System was installed in July 2018 for soil vapor extraction. The system was deemed functional and operational, but the system is not operating as of 1/1/2019 due to lack of an operations and maintenance contract.

Action Information

Action Date	Action	Description	DEC Staff
11/15/2006	Spill Transferred from Prevention Preparedness and Response Program	Site transferred by PERP staff Walt Sandel; Spill No. 03309923902; PERP File No. 100.02.256; Spill Date 8/27/03; Quantity Unknown; Substance = JP4.	Mitzi Read
12/5/2006	Site Added to Database	Site added to the database.	Mitzi Read
12/13/2006	Exposure Tracking Model Ranking	Baseline ranking completed.	Mitzi Read
7/23/2007	Update or Other Action	An Initial Site Characterization Report prepared by Michael L. Foster & Associates, Inc. was recieved by ADEC on October 26, 2006. This report delineates the nature and extent of contamination discovered while a private home owner (David Petroske) was excavating a foundation located approximately 80ft north of the MAPCO to Eielson Pipeline near Milepost 20.3. An initial Site Characterization effort was undertaken in September of 2003. Additional Site Characterization efforts were undertaken in September of 2004. The affected area is located between Baker Road and the intersection of the pipeline and Moose Creek Road. This area is approximately 400ft by 600ft or approximately five acres. The area is a spruce-birch forest with thick undergrowth of vegetation. The vegetation does not appear to be stressed by the soil and groundwater contamination. Three private water wells have each been sampled twice with analytical results indicating non-detect for GRO, DRO, and BTEX.	Zachary Richter
5/2/2008	Meeting or Teleconference Held	Attended a meeting with Jack Appolloni and Michael L. Foster to discuss future plans for the site. ADEC requested that a conceptual site model be completed for the site to determine if all the exposure pathways have been evaluated and to help determine what future remediation and/or monitoring is required for the site.	Deborah Williams
8/20/2009	Update or Other Action	Received Monitoring Well Installation Work Plan for placement and construction of 6 wells. Follow up email and phone call sent. Further discussion is required prior to formal approval of plan.	Fred Vreeman
1/7/2011	Document, Report, or Work plan Review - other	2010 Site Summary Report, prepared by OASIS on behalf of DESC. This report summarizes all site characterization work and is designed to provide a comprehensive basis for planning future efforts that result in final remedial decisions, a long-term monitoring plan and a schedule for closure. 2009 testing showed soil and groundwater contamination above cleanup levels for GRO, DRO and BTEX.	Kathleen Beutel
1/19/2011	Meeting or Teleconference Held	ADEC attended an initial stakeholders' meeting. DLA-Energy (the responsible party) and its contractor, OASIS, presented a site history and upcoming plans to sampling drinking water wells twice and conduct quarterly groundwater sampling in 2011. Another stakeholders' meeting to discuss results of the upcoming well sampling was scheduled for May 11, 2011.	Kathleen Beutel
2/22/2011	Document, Report, or Work plan Review - other	CS staff approved a work plan for residential drinking water well sampling within 1/4 mile of the contaminant plume. The work plan outlines two drinking water well sampling events scheduled for 2011. The winter sampling event will analyze 15 wells for DRO, GRO, EDB, VOCs, SVOCs, lead and sulfolane. The summer sample event will test only the seven wells closest to the contamination and omit lead and sulfolane testing. Because this water could be used for gardening or recreational activities, total aromatic hydrocarbons (TAH) and total aqueous hydrocarbons (TAqH) will be calculated from VOC/SVOC data and compared to surface water standards. If well logs or other well construction information cannot be obtained from homeowners, a downhole camera may be used (with homeowner consent) during the summer sampling event. The well will be disinfected and coliform bacteria testing will be completed following use of the camera.	Kathleen Beutel
4/15/2011	Update or Other Action	Residential drinking water well sampling was conducted in March 2011. 15 residents were contacted and 11 wells were sampled. Wells located closest to the plume were sampled both prior to the treatment system and at the tap. Wells further away were sampled only at the tap. Results were communicated to homeowners via letters. A summary report will be submitted to DEC following a second round of sampling in summer 2011. All wells were non-detect for GRO, DRO, toluene, ethylbenzene, xylenes and sulfolane. Benzene was detected below cleanup levels from the tap at one residence. At another residence, benzene was non-detect upstream of the treatment system but above the cleanup level (0.12 mg/L) at the tap. Follow-up sampling will be conducted at the residence. Lead was detected upstream of the treatment system at three residences but was non-detect at the tap at all three residences.	Kathleen Beutel
5/12/2011	Meeting or Teleconference Held	Contaminated Sites staff attended a stakeholders’ meeting regarding recent residential well sampling at the Moose Creek site at Milepost 20.3 of the Eielson Pipeline. Several homes are located within a half-mile of the five-acre area of GRO, DRO and BTEX contamination. Eleven residential wells were sampled for GRO, DRO, BTEX, EDB, PAHs, lead and sulfolane. All GRO, DRO, EDB and sulfolane results were non-detect. One residence will be re-sampled this week because benzene was non-detect upstream of the treatment system but above the cleanup level at the tap (0.12 mg/L). Three homes had lead upstream of the treatment system (0.012 - 0.2 mg/L) but all three were non-detect at the tap. Wells will be sampled again in August and another public meeting will be held on October 12.	Kathleen Beutel
6/1/2011	Update or Other Action	Follow-up residential drinking water sampling was conducted at the residence at which benzene was detected at the tap (see 15 April 2011 entry for details). All BTEX compounds and GRO were non-detect at the tap. Another round of drinking water sampling will be conducted this summer.	Kathleen Beutel
7/7/2011	Meeting or Teleconference Held	Contaminated Sites staff participated in a comment resolution meeting/teleconference to discuss the Fiscal Year 2011 work plan.	Kathleen Beutel
7/7/2011	Meeting or Teleconference Held	Contaminated Sites staff participated in a comment resolution meeting/teleconference to discuss the Fiscal Year 2011 work plan.	Fred Vreeman
7/13/2011	Site Characterization Workplan Approved	Contaminated Sites staff received the Fiscal Year 2011 work plan on June 02, provided comments on June 28, received a response to comments on July 08 and approved the work plan on July 13. Further soil and groundwater characterization will be conducted in July. Two new monitoring wells will be installed – a sentinel well upgradient of the source area and one on the downgradient edge of the dissolved-phase plume. The soil source area will be delineated with up to 30 laser-induced fluorescence (LIF) samples and up to 30 analytical soil samples. Pressure transducers will be installed to gather additional information about groundwater fluctuation and flow direction.	Kathleen Beutel
7/18/2011	Site Visit	Contaminated Sites staff participated in a site visit to observe ongoing field work at Moose Creek including source delineation with laser-induced fluorescence and analytical soil sampling and groundwater monitoring.	Kathleen Beutel
7/18/2011	Site Visit	Contaminated Sites staff participated in a site visit to observe ongoing field work at Moose Creek including source delineation with laser-induced fluorescence and analytical soil sampling and groundwater monitoring.	Kim DeRuyter
7/19/2011	Meeting or Teleconference Held	Contaminated Sites (CS) and DLA staff participated in a meeting to discuss three sites: Moose Creek, Manchu Road and the Eielson Take-Off Pad. CS and DLA staff discussed funding, plans for 2012 and the need to move these sites toward closure. No groundwater monitoring will be conducted at the Take-Off Pad in 2011; instead, a more comprehensive plan that will include replacement of frost-jacked wells, sampling for additional contaminants of potential concern and an effort to bound the dissolved-phase plume will be submitted in early 2012. All parties agreed that signed decision documents (DDs) will provide a clear path forward and possibly ease challenges in obtaining funding. It is anticipated that DDs for Manchu Road and the Take-Off Pad will be prepared within the next year and a DD for Moose Creek will be prepared within the next two years.	Kathleen Beutel
7/19/2011	Meeting or Teleconference Held	Contaminated Sites (CS) and DLA staff participated in a meeting to discuss three sites: Moose Creek, Manchu Road and the Eielson Take-Off Pad. CS and DLA staff discussed funding, plans for 2012 and the need to move these sites toward closure. No groundwater monitoring will be conducted at the Take-Off Pad in 2011; instead, a more comprehensive plan that will include replacement of frost-jacked wells, sampling for additional contaminants of potential concern and an effort to bound the dissolved-phase plume will be submitted in early 2012. All parties agreed that signed decision documents (DDs) will provide a clear path forward and possibly ease challenges in obtaining funding. It is anticipated that DDs for Manchu Road and the Take-Off Pad will be prepared within the next year and a DD for Moose Creek will be prepared within the next two years.	Kim DeRuyter
8/15/2011	Site Characterization Workplan Approved	CS staff approved a pipeline investigation work plan. DLA plans to investigate anomalies identified during a smart pig survey along the 12-mile North Pole - Eielson pipeline. In addition, an excavation in the Moose Creek area will be conducted in an attempt to identify the locations of historic repairs. If/when contamination is encountered along the pipeline, all spill reporting requirements in 18AAC75.300 will be followed. In addition, the approximate beginning and end of the contaminated area will be denoted with GPS coordinates and three analytical samples will be collected from the field screening locations with the highest PID results. Excavated soils will be returned to the trench in the order in which they were removed and DLA will submit a plan for further investigation within two months.	Kathleen Beutel
9/19/2011	Update or Other Action	Residential drinking water sampling for BTEX was conducted at 6 residences. All results were non-detect.	Kathleen Beutel
9/19/2011	Update or Other Action	Preliminary groundwater data received. The new monitoring wells (MW-07 and MW-08), which are located on the downgradient and upgradient ends of the plume, were non-detect for all parameters. Other monitoring wells had concentrations of GRO, DRO and benzene above cleanup levels. Results will be discussed at the October stakeholders' meeting and a report summarizing the 2011 field work will be submitted in the coming months.	Kathleen Beutel
10/12/2011	Meeting or Teleconference Held	Contaminated Sites staff attended a stakeholders’ meeting that summarized data collected this year at the Moose Creek site at Milepost 20.3 of the Eielson Pipeline. Drinking water wells were sampled twice this year and will continue to be sampled semi-annually. All results from the most recent round of sampling were non-detect. The ultraviolet optical screening tool was used this summer to fully delineate the soil contamination. Two new monitoring wells were installed at the up and downgradient edges of the plume; all results from these wells were non-detect. Wells within the source areas had concentrations of GRO, DRO, benzene and EDB above cleanup levels. The responsible party plans to conduct a soil-gas study this year at the residence closest to the plume and plans to delineate the lateral extent of the plume next year during a hydro-punch investigation. This will be followed by a feasibility study in 2013. Groundwater will continue to be monitored three times per year and pressure transducers continue to generate data regarding groundwater fluctuation and flow direction. Approximately ten residents attended the meeting. The next public meeting will be held February 15, 2012.	Kathleen Beutel
10/12/2011	Meeting or Teleconference Held	Contaminated Sites staff attended a stakeholders’ meeting that summarized data collected this year at the Moose Creek site at Milepost 20.3 of the Eielson Pipeline. Drinking water wells were sampled twice this year and will continue to be sampled semi-annually. All results from the most recent round of sampling were non-detect. The ultraviolet optical screening tool was used this summer to fully delineate the soil contamination. Two new monitoring wells were installed at the up and downgradient edges of the plume; all results from these wells were non-detect. Wells within the source areas had concentrations of GRO, DRO, benzene and EDB above cleanup levels. The responsible party plans to conduct a soil-gas study this year at the residence closest to the plume and plans to delineate the lateral extent of the plume next year during a hydro-punch investigation. This will be followed by a feasibility study in 2013. Groundwater will continue to be monitored three times per year and pressure transducers continue to generate data regarding groundwater fluctuation and flow direction. Approximately ten residents attended the meeting. The next public meeting will be held February 15, 2012.	Kim DeRuyter
12/30/2011	Update or Other Action	Staff provided comments on the draft Residential Well Sampling Report, which was received on 20 Dec 2011. The report summarizes results from two rounds of residential well sampling.	Kathleen Beutel
2/15/2012	Meeting or Teleconference Held	Contaminated Sites staff attended a stakeholders’ meeting regarding the Eielson Pipeline Milepost 20.3 – Moose Creek site. The responsible party, Defense Logistics Agency – Energy, shared results from 2011 including drinking water, soil gas, soil and groundwater data. No residential drinking water samples have exceeded the maximum allowable concentrations. Soil gas points installed around the residence closest to the plume were all non-detect. Additional site characterization data will be collected in 2012, and it is anticipated that cleanup options will be evaluated in 2013 and a decision document will be signed within the next two years. Approximately 7 residents attended the meeting.	Kathleen Beutel
6/8/2012	Site Characterization Report Approved	Contamnated Sites staff approved the final Moose Creek Site Residential Drinking Water Sampling Report. Drinking water wells were sampled twice in 2011. In winter 2011, pre- and post-treatment samples were collected at residences located closest to the release site, while other residences received tap-only sampling. The summer sampling event only included tap samples. In the winter, lead concentrations of up to 0.74 mg/L were identified upstream of the treatment system at four residences but were non-detect at the tap at all four residences. All analytes were non-detect during the summer sampling event. Drinking water samples will be collected at up to 14 residences in 2012. Pre- and post-treatment samples will be analyzed for gasoline range organics, diesel range organics, ethylene dibromide, volatile organic compounds, semivolatile compounds and lead.	Kathleen Beutel
6/11/2012	Site Characterization Workplan Approved	Contaminated Sites staff approved the Fiscal Year 2012 Site Investigation Work Plan. Field activities include two rounds of residential well and tap sampling, a hydropunch (direct-push) groundwater investigation, installation of up to eight new monitoring wells, soil sampling at the locations of the new monitoring wells and three rounds of groundwater monitoring. It is intended that the information obtained from the 2012 investigation, coupled with previous data and additional soil gas data to obtained in 2012, will provide information to update the conceptual site model and develop a remediation strategy.	Kathleen Beutel
5/1/2013	Site Characterization Workplan Approved	FY13 work plan approved. The Moose Creek Monitoring Work Plan provides for three rounds of sampling of groundwater at the site, two rounds of sampling of residential drinking water wells, and other ancillary tasks. The work plan also calls for two stakeholder meetings to be conducted. This work will proceed in conjunction with the Moose Creek Soil Gas Work Plan, previously approved on March 20, 2013. Results from the two work plans are expected to help establish the feasibility of various remediation options.	Eric Breitenberger
8/7/2013	Site Characterization Report Approved	FY 2013 Comprehensive report approved. Groundwater monitoring results indicate that the contaminant plume is probably stable or decreasing, however contaminant levels are still far above cleanup standards, with benzene up to 0.547 mg/L in MW-5. Drinking water results were all below action levels, with the exception of one sample which exceeded action levels for lead. The source of this exceedance is believed to be within the home’s plumbing system, as no exceedance was observed in another sample collected upstream (pre-filter) in the same residence.	Eric Breitenberger
8/25/2014	Site Characterization Workplan Approved	FY14 work plan approved. The Moose Creek Monitoring Work Plan provides for one round of sampling of groundwater at the site and one round of sampling of residential drinking water wells. Other ancillary tasks are also included. The frequency of groundwater and drinking water sampling will be reduced compared to previous work plans. DEC concurs that the reduction is warranted, due to the limited seasonal variability observed at the Moose Creek site.	Eric Breitenberger
12/9/2014	Update or Other Action	Proposed Plan approved.	Eric Breitenberger
12/10/2014	Update or Other Action	Feasibility Study approved. Selected Alternative is installation of a soil vapor extraction system and bioventing. Biosparging may potentially be added to the remedy.	Eric Breitenberger
7/29/2015	Update or Other Action	Public Meeting held to discuss Proposed Plan.	Eric Breitenberger
7/11/2016	CERCLA ROD Approved	CS signed the Record of Decision today. Notices of Environmental Contamination have been filed on the impacted properties a soil vapor extraction system and bio venting wells will be installed in 2017.	Kim DeRuyter
2/15/2017	Meeting or Teleconference Held	The 12th stakeholder meeting was held February 15, 2017 to discuss the status of the Eielson Pipeline Release site in Moose Creek, Alaska. DEC, Defense Logistics Agency (DLA), US Air Force (USAF) and CES-AGVIQ of Alaska contractors attended.	Eric Breitenberger
7/26/2017	Document, Report, or Work plan Review - other	DEC approved the Final Moose Creek Pipeline Release, Moose Creek, Alaska Drinking Water and Groundwater Monitoring Report, dated July 21, 2017. Results from the 2016 sampling event are consistent with the 2015 sampling results. Gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), benzene, toluene and 1,2-dibromoethane (EDB) continue to remain in the groundwater above DEC cleanup levels. Groundwater monitoring is occurring annually, drinking water sampling will occur on a need-based frequency. The next round of annual groundwater monitoring is expected to occur during Fall 2017.	Erica Blake
11/13/2017	Update or Other Action	The Defense Logistics Agency (DLA) sent DEC a copy of the Moose Creek Stakeholder meeting invitation. The Stakeholder meeting would be for residents interested in the progress of site cleanup. The next Stakeholders meeting is tentative for early 2018.	Erica Blake
11/22/2017	Document, Report, or Work plan Review - other	DEC completed a review of the Moose Creek Pipeline Release, 2017 Low Groundwater Monitoring Work Plan describing groundwater monitoring activities at the Moose Creek Pipeline Release area in Moose Creek, Alaska. Contaminants of concern (COCs) to be analyzed at nine monitoring wells (MW-01, MW-02, MW-06, MW-07, MW-08, MW-09, MW-10, MW-13 and MW-15) are; gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), 1,2-dibromoethane (EDB), total lead, benzene and toluene. MW-01, MW-06, MW-08 and MW-10 will be additionally analyzed for; nitrite/nitrate, dissolved iron and manganese, sulfate, methane and total organic carbon (TOC). The monitoring wells are to be sampled in early December 2017.	Erica Blake
1/5/2018	Document, Report, or Work plan Review - other	DEC approved the Remedial Implementation Work Plan (dated July 2016) for the Eielson Pipeline Release site in Moose Creek, Alaska. The Work Plan describes the installation procedure for a soil vapor extraction (SVE) system and bioventing system to remediate the petroleum contamination at the site. Review comments on the Work Plan were provided on October 4, 2016. DEC received responses to the comments on December 28, 2017. DEC requested an updated Work Plan be provided for review prior to implementation of this approved Work Plan.	Erica Blake
3/28/2018	Meeting or Teleconference Held	The 13th stakeholder meeting was held March 28, 2018 to discuss the status of site cleanup progress at the Eielson Pipeline Release site in Moose Creek, Alaska. DEC, Defense Logistics Agency (DLA), US Air Force (USAF), US Army Corp of Engineers (USACE) and CES-AGVIQ of Alaska contractors attended. The focus of the meeting was to discuss a proposed installation of a Soil-vapor extraction (SVE)/Biovent system. Once DLA has obtained signed easement access agreements from the affected property owners, the SVE/Biovent system installation can begin. Currently, the groundwater at the site is sampled annually. Drinking water is sampled on an as-needed basis.	Erica Blake
4/27/2018	Document, Report, or Work plan Review - other	DEC approved the Moose Creek Pipeline Release Groundwater Monitoring Report, Moose Creek, Alaska, dated April 11, 2018. The report describes 2017 groundwater sampling activities in Moose Creek, Alaska. Nine monitoring wells were sampled for gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), ethylene dibromide (EDB), benzene, toluene and total lead. Four of the nine monitoring wells were sampled for monitored natural attenuation (MNA) parameters: sulfate, nitrate/nitrite, methane, dissolved iron, dissolved manganese and total organic carbon (TOC). Results for GRO, DRO, benzene and EDB exceeded DEC's 2016 cleanup levels. The overall contaminant-of-concern (COC) concentrations in groundwater were lower in 2017, than 2016. Drinking water wells are sampled on an as-needed basis. No drinking water wells were sampled in 2017.	Erica Blake
6/28/2018	Site Visit	DEC and Defense Logistics Agency (DLA) staff conducted a site visit. DEC and DLA walked the site and observed extraction well and extraction well piping sticking up at the northwestern side of a concrete pad. Once the soil-vapor extraction (SVE) system arrives in Fairbanks, it will be placed on the concrete pad and hooked up to the extraction wells. This SVE system was expected to arrive on June 29, 2018. The extraction wells and monitoring wells installed around the site were observed to be in good condition.	Erica Blake
7/16/2018	Site Visit	DEC attended the 14th Stakeholder meeting which was held at the Moose Creek site. The contractor, CES-AGVIQ and Defense Logistics Agency (DLA) staff also attended. A tour was conducted for residents in the area and for anyone who stopped by that was interested in the soil-vapor extraction system. At the time of this site visit, the extraction wells were not hooked up, and the system was not set up to run. Biosparge pilot tests, fence installation, and system start-up and testing will occur throughout this next week. The next stakeholder meeting is planned for February 2019.	Erica Blake
7/23/2018	Site Visit	DEC staff conducted a site visit to inspect the SVE system operating. DEC observed a fence with locks on surrounding the SVE structure. All 21 extraction wells were turned on. DEC met with CES-AGVIQ staff for the tour. DLA staff provided permission for the visit, but was not present on this date.	Erica Blake
10/23/2018	Update or Other Action	DEC received results from the start-up sampling for the Moose Creek SVE system. Filtration of the emissions is not required based on sample results.	Bri Clark
11/16/2018	Document, Report, or Work plan Review - other	DEC completed review of and approved the final Moose Creek Pipeline Release, Moose Creek, Alaska 2018 Low Groundwater Monitoring Work Plan dated November 2018. This work plan describes the sampling and analysis to be done for the historic fuel release that occurred at Pipeline Milepost 20.3. This work plan details the site background, sampling plan, and analysis to be conducted for groundwater at the site. Nine monitoring wells are to be assessed for the identified contaminants of concern as well as natural attenuation parameters in four wells.	Bri Clark
1/25/2019	Site Visit	DEC and Defense Logistics Agency (DLA) staff conducted a site visit. DEC and DLA walked the site and observed extraction wells and the soil-vapor extraction (SVE) system. The SVE system was non-operational at the time of the visit due to a contracting issue. DLA staff stated that the system will be operational beginning February 1, 2019. The extraction wells and monitoring wells installed around the site were observed to be in good condition.	Bri Clark
3/4/2019	Institutional Control Periodic Reporting	DEC received the Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report, Draft, dated February 2019.	Bri Clark
3/26/2019	Institutional Control Periodic Reporting	DEC issued comments on the Draft Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report, dated February 2019.	Bri Clark
4/22/2019	Institutional Control Periodic Reporting	DEC reviewed and issued an approval letter for the Final Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report, dated April 2019.	Bri Clark
6/14/2019	Document, Report, or Work plan Review - other	DEC received the Draft Moose Creek 2019 Summer Groundwater Monitoring Work Plan dated June 2019.	Dennis Shepard
6/24/2019	Document, Report, or Work plan Review - other	DEC provided comments for the 2019 Groundwater Monitoring Work Plan Pipeline Release in Moose Creek, Alaska.	Dennis Shepard
7/25/2019	Document, Report, or Work plan Review - other	Received the Final Moose Creek 2019 Summer Groundwater Monitoring Work Plan dated June 2019. The work plan describes groundwater sampling to take place in Moose Creek, Alaska during the high (summer) and low (fall) seasons. The plan presents methods and approaches for the groundwater monitoring and sample analysis.	Sara Marshall
10/9/2019	Document, Report, or Work plan Review - other	DEC provided comments on Moose Creek Pipeline Release Moose Creek, Alaska 2019 Summer (High) Groundwater Monitoring Report Draft October 2019. The draft report provided data from the summer (high) groundwater monitoring and sample analysis.	Sara Marshall
10/24/2019	Document, Report, or Work plan Review - other	DEC accepted conducting the fall (low) groundwater monitoring event in accordance with the approved Moose Creek Pipeline Release Moose Creek, Alaska 2019 Summer High Groundwater Monitoring Work Plan dated June 25, 2019.	Sara Marshall
10/30/2019	Meeting or Teleconference Held	The bi-annual stakeholders meeting was held October 30, 2019 to discuss the status of site cleanup progress at the Eielson Pipeline Release site in Moose Creek, Alaska. DEC, Defense Logistics Agency (DLA), US Air Force (USAF), and CES-AGVIQ of Alaska contractors attended. The focus of the meeting was to discuss the Soil-vapor extraction (SVE)/Biovent system. The property owners were updated on clean up progress.	Sara Marshall
5/4/2020	Document, Report, or Work plan Review - other	DEC has provided comments on the Draft Moose Creek Pipeline Release Moose Creek, Alaska 2020 Summer (High) Groundwater Monitoring Work Plan April 2020 provided by Defense Logistics Agency - Energy on April 17, 2020. The Groundwater Monitoring work plan presents the methods for the monitoring and collection of groundwater samples to be conducted during the summer of 2020. Ten monitoring wells will be sampled and the results will be compared against the state regulatory criteria and previous sampling events.	Sara Marshall
8/19/2020	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) has completed a review of the "Moose Creek Pipeline Release Moose Creek, Alaska 2020 Summer Groundwater Monitoring Report Draft August 2020" provided by Defense Logistics Agency - Energy on August 18, 2020. The Groundwater Monitoring Report presents the results of the groundwater monitoring and sampling activities conducted at the North Pole Eielson Release Site in Moose Creek, Alaska. Ten monitoring wells were sampled and the results were compared against the state regulatory criteria and previous sampling events.	Sara Marshall
3/17/2021	Document, Report, or Work plan Review - other	DEC provided comments on Moose Creek Pipeline Release Moose Creek, Alaska 2020 Winter Groundwater Monitoring Report Draft, March 2021. The draft report provided data from the winter groundwater monitoring and sample analysis. Nine out of the planned ten wells were sampled in accordance with the 2020 Winter (Low) Groundwater Monitoring Work Plan Final, November 2020.	Axl LeVan
4/14/2021	Document, Report, or Work plan Review - other	DEC reviewed and issued an approval letter for the Final Moose Creek Pipeline Release, Moose Creek, Alaska, 2020 Winter Groundwater Monitoring Report, dated April 2021.	Axl LeVan
4/23/2021	Document, Report, or Work plan Review - other	DEC reviewed and provided comments on Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2021 First Five-Year Review, April 2021. The draft evaluates the implementation and performance of the remedy outlined in the 2016 Decision Document for the Moose Creek Pipeline Release, and is the first five-year review. The document also provides recommendations to address any issues discovered during the review.	Axl LeVan
4/23/2021	Meeting or Teleconference Held	DEC and Defense Logistic Agency PM had a meeting to discuss the current status of DLA sites. Current and expected documents regarding the sites were discussed. The status of clean-up efforts and monitoring at sites was also discussed.	Axl LeVan
6/11/2021	Document, Report, or Work plan Review - other	DEC backchecked and provided comments on DraftFinal Moose Creek Pipeline Release, Moose Creek, Alaska 2021 First Five-Year Review, April 2021. The draft evaluates the implementation and performance of the remedy outlined in the 2016 Decision Document for the Moose Creek Pipeline Release, and is the first five-year review. The document also provides recommendations to address any issues discovered during the review.	Axl LeVan
6/15/2021	Document, Report, or Work plan Review - other	DEC reviewed and provided comments on "Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Groundwater Monitoring Work Plan, Draft May 2021" received from the Defense Logistics Agency on May 21, 2021. The Groundwater Monitoring work plan presents the methods for the monitoring and collection of groundwater samples to be conducted during the summer and fall of 2021. Ten monitoring wells will be sampled and the results will be compared against the state regulatory criteria and previous sampling events.	Axl LeVan
6/30/2021	Document, Report, or Work plan Review - other	DEC Approved the Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 First Five-Year Review, June 2021. The document evaluates the implementation and performance of the remedy outlined in the 2016 Decision Document for the Moose Creek Pipeline Release, and is the first five-year review. The document also provides recommendations to address any issues discovered during the review. All previous comments by DEC were addressed and the document was approved as final.	Axl LeVan
7/23/2021	Site Visit	DEC staff conducted a site visit. DEC and Defense Logistics Agency (DLA) staff walked the DESC MP 20.3 Eielson Pipeline Release - Moose Creek and multiple monitoring wells and soil vapor extraction wells in good condition. All monitoring wells and soil vapor extraction wells were easy to walk to. DLA staff showed DEC staff the Soil Vapor Extraction system in operation. The fence around the Soil Vapor Extraction System was also in good condition.	Axl LeVan
8/13/2021	Document, Report, or Work plan Review - other	DEC approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Groundwater Monitoring Work Plan, July 2021" received from the Defense Logistics Agency on August 12, 2021. The Groundwater Monitoring work plan presents the methods for the monitoring and collection of groundwater samples to be conducted during the summer and fall of 2021. Ten monitoring wells will be sampled and the results will be compared against the state regulatory criteria and previous sampling events.	Axl LeVan
2/8/2022	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) has completed a review of the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Summer Groundwater Monitoring Report, January 2022" submitted by Defense Logistics Agency - Energy on February 1, 2021. DEC provided comments on the document on February 8, 2022. This document describes the Summer 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
2/8/2022	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) has completed a review of the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Fall Groundwater Monitoring Report, January 2022" submitted by Defense Logistics Agency - Energy on February 2, 2021. DEC provided comments on the document on February 8, 2022. This document describes the Fall 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
5/19/2022	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) has reviewed and approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Fall Groundwater Monitoring Report, May 2022" submitted by Defense Logistics Agency - Energy on May 11, 2021. This document describes the Fall 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
5/19/2022	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) has reviewed and approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Summer Groundwater Monitoring Report, May 2022" submitted by Defense Logistics Agency - Energy on May 11, 2021. This document describes the Summer 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
7/6/2022	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conversation (DEC) has completed a review of the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" received on June 24, 2022. The document describes the plans for the summer and fall 2022 sampling events. The sampling events will include groundwater monitoring and collection of groundwater samples for chemical analysis at thirteen wells: MW-01, MW-02, MW-03, MW-04, MW-05, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
7/26/2022	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conversation (DEC) approved the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" received on July 20, 2022. The document describes the plans for the summer and fall 2022 sampling events. The sampling events will include groundwater monitoring and collection of groundwater samples for chemical analysis at thirteen wells: MW-01, MW-02, MW-03, MW-04, MW-05, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
6/2/2023	Document, Report, or Work plan Review - other	DEC approved the "Final Moose Creek Pipeline Release, 2022 Summer Groundwater Monitoring Report" submitted to DEC May 22, 2023. This document describes the Summer 2022 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-03, MW-04, MW-05 MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
6/12/2023	Document, Report, or Work plan Review - other	DEC reviewed an addendum updating the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" for the 2023 season. DEC provided one comment requesting addition information.	Axl LeVan
7/21/2023	Document, Report, or Work plan Review - other	DEC approved the "Final Moose Creek Pipeline Release, 2022 Winter Groundwater Monitoring Report" submitted to DEC July 18, 2023. This document describes the Winter 2022 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-03, MW-04, MW-05 MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.	Axl LeVan
7/21/2023	Document, Report, or Work plan Review - other	DEC approved the "Technical Memorandum 2023 Groundwater Sampling Moose Creek Pipeline Release Site, July 2023". The document is an addendum to the previous "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" and updates the plan for 2023 sampling.	Axl LeVan
4/4/2024	Meeting or Teleconference Held	DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.	Axl LeVan
4/4/2024	Meeting or Teleconference Held	DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.	Axl LeVan
4/4/2024	Meeting or Teleconference Held	DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.	Axl LeVan
4/4/2024	Meeting or Teleconference Held	DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.	Axl LeVan
4/4/2024	Meeting or Teleconference Held	DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.	Axl LeVan
5/14/2024	Document, Report, or Work plan Review - other	DEC reviewed and provided comments on the "Draft 2024 Groundwater Monitoring Work Plan, Moose Creek Pipeline Release Site, May 2024". The Summer and Fall 2024 sampling event are described, which will include groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-03, MW-04, MW-05 MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23. The analysis of monitored natural attenuation parameters in four monitoring wells will be included.	Axl LeVan
5/14/2024	Document, Report, or Work plan Review - other	DEC reviewed and provided comments on the "Draft 2024 Groundwater Monitoring Work Plan, Moose Creek Pipeline Release Site, May 2024". The Summer and Fall 2024 sampling event are described, which will include groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-03, MW-04, MW-05 MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23. The analysis of monitored natural attenuation parameters in four monitoring wells will be included.	Axl LeVan
5/21/2024	Document, Report, or Work plan Review - other	DEC reviewed and approved the "2024 Groundwater Monitoring Work Plan, Moose Creek Pipeline Release Site, May 2024" based on updates to the document.	Axl LeVan
7/11/2024	CERCLA Removal Action Report	DEC reviewed and approved the "Final 2024 Remedial Action Report for Remedial Action – Construction at Multiple Sites: CG517, SS079, TU077 and ZZ088, Eielson Air Force Base, Alaska, May 2024" based on response to DEC comments on the draft document. The report outlines the excavation of contaminated material at the four sites and the installation of groundwater monitoring wells for continued monitoring at the three of the sites.	Axl LeVan
7/22/2024	Document, Report, or Work plan Review - other	DEC reviewed and approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2023 Groundwater Monitoring Report, June 2024." This document describes the Summer and Winter 2023 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at thirteen monitoring wells. DEC first reviewed the draft document 7/9/2024.	Axl LeVan
9/16/2024	Document, Report, or Work plan Review - other	DEC reviewed and approved "Work Plan Addendum 2024 Groundwater Sampling, Moose Creek Pipeline Release Site, May 2024". This addendum added PFAS sampling to well MW-06.	Axl LeVan

Action Date

Action

Description

DEC Staff

11/15/2006

Spill Transferred from Prevention Preparedness and Response Program

Site transferred by PERP staff Walt Sandel; Spill No. 03309923902; PERP File No. 100.02.256; Spill Date 8/27/03; Quantity Unknown; Substance = JP4.

Mitzi Read

12/5/2006

Site Added to Database

Site added to the database.

Mitzi Read

12/13/2006

Exposure Tracking Model Ranking

Baseline ranking completed.

Mitzi Read

7/23/2007

Update or Other Action

An Initial Site Characterization Report prepared by Michael L. Foster & Associates, Inc. was recieved by ADEC on October 26, 2006. This report delineates the nature and extent of contamination discovered while a private home owner (David Petroske) was excavating a foundation located approximately 80ft north of the MAPCO to Eielson Pipeline near Milepost 20.3. An initial Site Characterization effort was undertaken in September of 2003. Additional Site Characterization efforts were undertaken in September of 2004. The affected area is located between Baker Road and the intersection of the pipeline and Moose Creek Road. This area is approximately 400ft by 600ft or approximately five acres. The area is a spruce-birch forest with thick undergrowth of vegetation. The vegetation does not appear to be stressed by the soil and groundwater contamination. Three private water wells have each been sampled twice with analytical results indicating non-detect for GRO, DRO, and BTEX.

Zachary Richter

5/2/2008

Meeting or Teleconference Held

Attended a meeting with Jack Appolloni and Michael L. Foster to discuss future plans for the site. ADEC requested that a conceptual site model be completed for the site to determine if all the exposure pathways have been evaluated and to help determine what future remediation and/or monitoring is required for the site.

Deborah Williams

8/20/2009

Update or Other Action

Received Monitoring Well Installation Work Plan for placement and construction of 6 wells. Follow up email and phone call sent. Further discussion is required prior to formal approval of plan.

Fred Vreeman

1/7/2011

Document, Report, or Work plan Review - other

2010 Site Summary Report, prepared by OASIS on behalf of DESC. This report summarizes all site characterization work and is designed to provide a comprehensive basis for planning future efforts that result in final remedial decisions, a long-term monitoring plan and a schedule for closure. 2009 testing showed soil and groundwater contamination above cleanup levels for GRO, DRO and BTEX.

Kathleen Beutel

1/19/2011

Meeting or Teleconference Held

ADEC attended an initial stakeholders' meeting. DLA-Energy (the responsible party) and its contractor, OASIS, presented a site history and upcoming plans to sampling drinking water wells twice and conduct quarterly groundwater sampling in 2011. Another stakeholders' meeting to discuss results of the upcoming well sampling was scheduled for May 11, 2011.

Kathleen Beutel

2/22/2011

Document, Report, or Work plan Review - other

CS staff approved a work plan for residential drinking water well sampling within 1/4 mile of the contaminant plume. The work plan outlines two drinking water well sampling events scheduled for 2011. The winter sampling event will analyze 15 wells for DRO, GRO, EDB, VOCs, SVOCs, lead and sulfolane. The summer sample event will test only the seven wells closest to the contamination and omit lead and sulfolane testing. Because this water could be used for gardening or recreational activities, total aromatic hydrocarbons (TAH) and total aqueous hydrocarbons (TAqH) will be calculated from VOC/SVOC data and compared to surface water standards. If well logs or other well construction information cannot be obtained from homeowners, a downhole camera may be used (with homeowner consent) during the summer sampling event. The well will be disinfected and coliform bacteria testing will be completed following use of the camera.

Kathleen Beutel

4/15/2011

Update or Other Action

Residential drinking water well sampling was conducted in March 2011. 15 residents were contacted and 11 wells were sampled. Wells located closest to the plume were sampled both prior to the treatment system and at the tap. Wells further away were sampled only at the tap. Results were communicated to homeowners via letters. A summary report will be submitted to DEC following a second round of sampling in summer 2011. All wells were non-detect for GRO, DRO, toluene, ethylbenzene, xylenes and sulfolane. Benzene was detected below cleanup levels from the tap at one residence. At another residence, benzene was non-detect upstream of the treatment system but above the cleanup level (0.12 mg/L) at the tap. Follow-up sampling will be conducted at the residence. Lead was detected upstream of the treatment system at three residences but was non-detect at the tap at all three residences.

Kathleen Beutel

5/12/2011

Meeting or Teleconference Held

Contaminated Sites staff attended a stakeholders’ meeting regarding recent residential well sampling at the Moose Creek site at Milepost 20.3 of the Eielson Pipeline. Several homes are located within a half-mile of the five-acre area of GRO, DRO and BTEX contamination. Eleven residential wells were sampled for GRO, DRO, BTEX, EDB, PAHs, lead and sulfolane. All GRO, DRO, EDB and sulfolane results were non-detect. One residence will be re-sampled this week because benzene was non-detect upstream of the treatment system but above the cleanup level at the tap (0.12 mg/L). Three homes had lead upstream of the treatment system (0.012 - 0.2 mg/L) but all three were non-detect at the tap. Wells will be sampled again in August and another public meeting will be held on October 12.

Kathleen Beutel

6/1/2011

Update or Other Action

Follow-up residential drinking water sampling was conducted at the residence at which benzene was detected at the tap (see 15 April 2011 entry for details). All BTEX compounds and GRO were non-detect at the tap. Another round of drinking water sampling will be conducted this summer.

Kathleen Beutel

7/7/2011

Meeting or Teleconference Held

Contaminated Sites staff participated in a comment resolution meeting/teleconference to discuss the Fiscal Year 2011 work plan.

Kathleen Beutel

7/7/2011

Meeting or Teleconference Held

Contaminated Sites staff participated in a comment resolution meeting/teleconference to discuss the Fiscal Year 2011 work plan.

Fred Vreeman

7/13/2011

Site Characterization Workplan Approved

Contaminated Sites staff received the Fiscal Year 2011 work plan on June 02, provided comments on June 28, received a response to comments on July 08 and approved the work plan on July 13. Further soil and groundwater characterization will be conducted in July. Two new monitoring wells will be installed – a sentinel well upgradient of the source area and one on the downgradient edge of the dissolved-phase plume. The soil source area will be delineated with up to 30 laser-induced fluorescence (LIF) samples and up to 30 analytical soil samples. Pressure transducers will be installed to gather additional information about groundwater fluctuation and flow direction.

Kathleen Beutel

7/18/2011

Site Visit

Contaminated Sites staff participated in a site visit to observe ongoing field work at Moose Creek including source delineation with laser-induced fluorescence and analytical soil sampling and groundwater monitoring.

Kathleen Beutel

7/18/2011

Site Visit

Kim DeRuyter

7/19/2011

Meeting or Teleconference Held

Contaminated Sites (CS) and DLA staff participated in a meeting to discuss three sites: Moose Creek, Manchu Road and the Eielson Take-Off Pad. CS and DLA staff discussed funding, plans for 2012 and the need to move these sites toward closure. No groundwater monitoring will be conducted at the Take-Off Pad in 2011; instead, a more comprehensive plan that will include replacement of frost-jacked wells, sampling for additional contaminants of potential concern and an effort to bound the dissolved-phase plume will be submitted in early 2012. All parties agreed that signed decision documents (DDs) will provide a clear path forward and possibly ease challenges in obtaining funding. It is anticipated that DDs for Manchu Road and the Take-Off Pad will be prepared within the next year and a DD for Moose Creek will be prepared within the next two years.

Kathleen Beutel

7/19/2011

Meeting or Teleconference Held

Kim DeRuyter

8/15/2011

Site Characterization Workplan Approved

CS staff approved a pipeline investigation work plan. DLA plans to investigate anomalies identified during a smart pig survey along the 12-mile North Pole - Eielson pipeline. In addition, an excavation in the Moose Creek area will be conducted in an attempt to identify the locations of historic repairs. If/when contamination is encountered along the pipeline, all spill reporting requirements in 18AAC75.300 will be followed. In addition, the approximate beginning and end of the contaminated area will be denoted with GPS coordinates and three analytical samples will be collected from the field screening locations with the highest PID results. Excavated soils will be returned to the trench in the order in which they were removed and DLA will submit a plan for further investigation within two months.

Kathleen Beutel

9/19/2011

Update or Other Action

Residential drinking water sampling for BTEX was conducted at 6 residences. All results were non-detect.

Kathleen Beutel

9/19/2011

Update or Other Action

Preliminary groundwater data received. The new monitoring wells (MW-07 and MW-08), which are located on the downgradient and upgradient ends of the plume, were non-detect for all parameters. Other monitoring wells had concentrations of GRO, DRO and benzene above cleanup levels. Results will be discussed at the October stakeholders' meeting and a report summarizing the 2011 field work will be submitted in the coming months.

Kathleen Beutel

10/12/2011

Meeting or Teleconference Held

Contaminated Sites staff attended a stakeholders’ meeting that summarized data collected this year at the Moose Creek site at Milepost 20.3 of the Eielson Pipeline. Drinking water wells were sampled twice this year and will continue to be sampled semi-annually. All results from the most recent round of sampling were non-detect. The ultraviolet optical screening tool was used this summer to fully delineate the soil contamination. Two new monitoring wells were installed at the up and downgradient edges of the plume; all results from these wells were non-detect. Wells within the source areas had concentrations of GRO, DRO, benzene and EDB above cleanup levels. The responsible party plans to conduct a soil-gas study this year at the residence closest to the plume and plans to delineate the lateral extent of the plume next year during a hydro-punch investigation. This will be followed by a feasibility study in 2013. Groundwater will continue to be monitored three times per year and pressure transducers continue to generate data regarding groundwater fluctuation and flow direction. Approximately ten residents attended the meeting. The next public meeting will be held February 15, 2012.

Kathleen Beutel

10/12/2011

Meeting or Teleconference Held

Kim DeRuyter

12/30/2011

Update or Other Action

Staff provided comments on the draft Residential Well Sampling Report, which was received on 20 Dec 2011. The report summarizes results from two rounds of residential well sampling.

Kathleen Beutel

2/15/2012

Meeting or Teleconference Held

Contaminated Sites staff attended a stakeholders’ meeting regarding the Eielson Pipeline Milepost 20.3 – Moose Creek site. The responsible party, Defense Logistics Agency – Energy, shared results from 2011 including drinking water, soil gas, soil and groundwater data. No residential drinking water samples have exceeded the maximum allowable concentrations. Soil gas points installed around the residence closest to the plume were all non-detect. Additional site characterization data will be collected in 2012, and it is anticipated that cleanup options will be evaluated in 2013 and a decision document will be signed within the next two years. Approximately 7 residents attended the meeting.

Kathleen Beutel

6/8/2012

Site Characterization Report Approved

Contamnated Sites staff approved the final Moose Creek Site Residential Drinking Water Sampling Report. Drinking water wells were sampled twice in 2011. In winter 2011, pre- and post-treatment samples were collected at residences located closest to the release site, while other residences received tap-only sampling. The summer sampling event only included tap samples. In the winter, lead concentrations of up to 0.74 mg/L were identified upstream of the treatment system at four residences but were non-detect at the tap at all four residences. All analytes were non-detect during the summer sampling event. Drinking water samples will be collected at up to 14 residences in 2012. Pre- and post-treatment samples will be analyzed for gasoline range organics, diesel range organics, ethylene dibromide, volatile organic compounds, semivolatile compounds and lead.

Kathleen Beutel

6/11/2012

Site Characterization Workplan Approved

Contaminated Sites staff approved the Fiscal Year 2012 Site Investigation Work Plan. Field activities include two rounds of residential well and tap sampling, a hydropunch (direct-push) groundwater investigation, installation of up to eight new monitoring wells, soil sampling at the locations of the new monitoring wells and three rounds of groundwater monitoring. It is intended that the information obtained from the 2012 investigation, coupled with previous data and additional soil gas data to obtained in 2012, will provide information to update the conceptual site model and develop a remediation strategy.

Kathleen Beutel

5/1/2013

Site Characterization Workplan Approved

FY13 work plan approved. The Moose Creek Monitoring Work Plan provides for three rounds of sampling of groundwater at the site, two rounds of sampling of residential drinking water wells, and other ancillary tasks. The work plan also calls for two stakeholder meetings to be conducted. This work will proceed in conjunction with the Moose Creek Soil Gas Work Plan, previously approved on March 20, 2013. Results from the two work plans are expected to help establish the feasibility of various remediation options.

Eric Breitenberger

8/7/2013

Site Characterization Report Approved

FY 2013 Comprehensive report approved. Groundwater monitoring results indicate that the contaminant plume is probably stable or decreasing, however contaminant levels are still far above cleanup standards, with benzene up to 0.547 mg/L in MW-5. Drinking water results were all below action levels, with the exception of one sample which exceeded action levels for lead. The source of this exceedance is believed to be within the home’s plumbing system, as no exceedance was observed in another sample collected upstream (pre-filter) in the same residence.

Eric Breitenberger

8/25/2014

Site Characterization Workplan Approved

FY14 work plan approved. The Moose Creek Monitoring Work Plan provides for one round of sampling of groundwater at the site and one round of sampling of residential drinking water wells. Other ancillary tasks are also included. The frequency of groundwater and drinking water sampling will be reduced compared to previous work plans. DEC concurs that the reduction is warranted, due to the limited seasonal variability observed at the Moose Creek site.

Eric Breitenberger

12/9/2014

Update or Other Action

Proposed Plan approved.

Eric Breitenberger

12/10/2014

Update or Other Action

Feasibility Study approved. Selected Alternative is installation of a soil vapor extraction system and bioventing. Biosparging may potentially be added to the remedy.

Eric Breitenberger

7/29/2015

Update or Other Action

Public Meeting held to discuss Proposed Plan.

Eric Breitenberger

7/11/2016

CERCLA ROD Approved

CS signed the Record of Decision today. Notices of Environmental Contamination have been filed on the impacted properties a soil vapor extraction system and bio venting wells will be installed in 2017.

Kim DeRuyter

2/15/2017

Meeting or Teleconference Held

The 12th stakeholder meeting was held February 15, 2017 to discuss the status of the Eielson Pipeline Release site in Moose Creek, Alaska. DEC, Defense Logistics Agency (DLA), US Air Force (USAF) and CES-AGVIQ of Alaska contractors attended.

Eric Breitenberger

7/26/2017

Document, Report, or Work plan Review - other

DEC approved the Final Moose Creek Pipeline Release, Moose Creek, Alaska Drinking Water and Groundwater Monitoring Report, dated July 21, 2017. Results from the 2016 sampling event are consistent with the 2015 sampling results. Gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), benzene, toluene and 1,2-dibromoethane (EDB) continue to remain in the groundwater above DEC cleanup levels. Groundwater monitoring is occurring annually, drinking water sampling will occur on a need-based frequency. The next round of annual groundwater monitoring is expected to occur during Fall 2017.

Erica Blake

11/13/2017

Update or Other Action

The Defense Logistics Agency (DLA) sent DEC a copy of the Moose Creek Stakeholder meeting invitation. The Stakeholder meeting would be for residents interested in the progress of site cleanup. The next Stakeholders meeting is tentative for early 2018.

Erica Blake

11/22/2017

Document, Report, or Work plan Review - other

DEC completed a review of the Moose Creek Pipeline Release, 2017 Low Groundwater Monitoring Work Plan describing groundwater monitoring activities at the Moose Creek Pipeline Release area in Moose Creek, Alaska. Contaminants of concern (COCs) to be analyzed at nine monitoring wells (MW-01, MW-02, MW-06, MW-07, MW-08, MW-09, MW-10, MW-13 and MW-15) are; gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), 1,2-dibromoethane (EDB), total lead, benzene and toluene. MW-01, MW-06, MW-08 and MW-10 will be additionally analyzed for; nitrite/nitrate, dissolved iron and manganese, sulfate, methane and total organic carbon (TOC). The monitoring wells are to be sampled in early December 2017.

Erica Blake

1/5/2018

Document, Report, or Work plan Review - other

DEC approved the Remedial Implementation Work Plan (dated July 2016) for the Eielson Pipeline Release site in Moose Creek, Alaska. The Work Plan describes the installation procedure for a soil vapor extraction (SVE) system and bioventing system to remediate the petroleum contamination at the site. Review comments on the Work Plan were provided on October 4, 2016. DEC received responses to the comments on December 28, 2017. DEC requested an updated Work Plan be provided for review prior to implementation of this approved Work Plan.

Erica Blake

3/28/2018

Meeting or Teleconference Held

The 13th stakeholder meeting was held March 28, 2018 to discuss the status of site cleanup progress at the Eielson Pipeline Release site in Moose Creek, Alaska. DEC, Defense Logistics Agency (DLA), US Air Force (USAF), US Army Corp of Engineers (USACE) and CES-AGVIQ of Alaska contractors attended. The focus of the meeting was to discuss a proposed installation of a Soil-vapor extraction (SVE)/Biovent system. Once DLA has obtained signed easement access agreements from the affected property owners, the SVE/Biovent system installation can begin. Currently, the groundwater at the site is sampled annually. Drinking water is sampled on an as-needed basis.

Erica Blake

4/27/2018

Document, Report, or Work plan Review - other

DEC approved the Moose Creek Pipeline Release Groundwater Monitoring Report, Moose Creek, Alaska, dated April 11, 2018. The report describes 2017 groundwater sampling activities in Moose Creek, Alaska. Nine monitoring wells were sampled for gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), ethylene dibromide (EDB), benzene, toluene and total lead. Four of the nine monitoring wells were sampled for monitored natural attenuation (MNA) parameters: sulfate, nitrate/nitrite, methane, dissolved iron, dissolved manganese and total organic carbon (TOC). Results for GRO, DRO, benzene and EDB exceeded DEC's 2016 cleanup levels. The overall contaminant-of-concern (COC) concentrations in groundwater were lower in 2017, than 2016. Drinking water wells are sampled on an as-needed basis. No drinking water wells were sampled in 2017.

Erica Blake

6/28/2018

Site Visit

DEC and Defense Logistics Agency (DLA) staff conducted a site visit. DEC and DLA walked the site and observed extraction well and extraction well piping sticking up at the northwestern side of a concrete pad. Once the soil-vapor extraction (SVE) system arrives in Fairbanks, it will be placed on the concrete pad and hooked up to the extraction wells. This SVE system was expected to arrive on June 29, 2018. The extraction wells and monitoring wells installed around the site were observed to be in good condition.

Erica Blake

7/16/2018

Site Visit

DEC attended the 14th Stakeholder meeting which was held at the Moose Creek site. The contractor, CES-AGVIQ and Defense Logistics Agency (DLA) staff also attended. A tour was conducted for residents in the area and for anyone who stopped by that was interested in the soil-vapor extraction system. At the time of this site visit, the extraction wells were not hooked up, and the system was not set up to run. Biosparge pilot tests, fence installation, and system start-up and testing will occur throughout this next week. The next stakeholder meeting is planned for February 2019.

Erica Blake

7/23/2018

Site Visit

DEC staff conducted a site visit to inspect the SVE system operating. DEC observed a fence with locks on surrounding the SVE structure. All 21 extraction wells were turned on. DEC met with CES-AGVIQ staff for the tour. DLA staff provided permission for the visit, but was not present on this date.

Erica Blake

10/23/2018

Update or Other Action

DEC received results from the start-up sampling for the Moose Creek SVE system. Filtration of the emissions is not required based on sample results.

Bri Clark

11/16/2018

Document, Report, or Work plan Review - other

DEC completed review of and approved the final Moose Creek Pipeline Release, Moose Creek, Alaska 2018 Low Groundwater Monitoring Work Plan dated November 2018. This work plan describes the sampling and analysis to be done for the historic fuel release that occurred at Pipeline Milepost 20.3. This work plan details the site background, sampling plan, and analysis to be conducted for groundwater at the site. Nine monitoring wells are to be assessed for the identified contaminants of concern as well as natural attenuation parameters in four wells.

Bri Clark

1/25/2019

Site Visit

DEC and Defense Logistics Agency (DLA) staff conducted a site visit. DEC and DLA walked the site and observed extraction wells and the soil-vapor extraction (SVE) system. The SVE system was non-operational at the time of the visit due to a contracting issue. DLA staff stated that the system will be operational beginning February 1, 2019. The extraction wells and monitoring wells installed around the site were observed to be in good condition.

Bri Clark

3/4/2019

Institutional Control Periodic Reporting

DEC received the Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report, Draft, dated February 2019.

Bri Clark

3/26/2019

Institutional Control Periodic Reporting

DEC issued comments on the Draft Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report, dated February 2019.

Bri Clark

4/22/2019

Institutional Control Periodic Reporting

DEC reviewed and issued an approval letter for the Final Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report, dated April 2019.

Bri Clark

6/14/2019

Document, Report, or Work plan Review - other

DEC received the Draft Moose Creek 2019 Summer Groundwater Monitoring Work Plan dated June 2019.

Dennis Shepard

6/24/2019

Document, Report, or Work plan Review - other

DEC provided comments for the 2019 Groundwater Monitoring Work Plan Pipeline Release in Moose Creek, Alaska.

Dennis Shepard

7/25/2019

Document, Report, or Work plan Review - other

Received the Final Moose Creek 2019 Summer Groundwater Monitoring Work Plan dated June 2019. The work plan describes groundwater sampling to take place in Moose Creek, Alaska during the high (summer) and low (fall) seasons. The plan presents methods and approaches for the groundwater monitoring and sample analysis.

Sara Marshall

10/9/2019

Document, Report, or Work plan Review - other

DEC provided comments on Moose Creek Pipeline Release Moose Creek, Alaska 2019 Summer (High) Groundwater Monitoring Report Draft October 2019. The draft report provided data from the summer (high) groundwater monitoring and sample analysis.

Sara Marshall

10/24/2019

Document, Report, or Work plan Review - other

DEC accepted conducting the fall (low) groundwater monitoring event in accordance with the approved Moose Creek Pipeline Release Moose Creek, Alaska 2019 Summer High Groundwater Monitoring Work Plan dated June 25, 2019.

Sara Marshall

10/30/2019

Meeting or Teleconference Held

The bi-annual stakeholders meeting was held October 30, 2019 to discuss the status of site cleanup progress at the Eielson Pipeline Release site in Moose Creek, Alaska. DEC, Defense Logistics Agency (DLA), US Air Force (USAF), and CES-AGVIQ of Alaska contractors attended. The focus of the meeting was to discuss the Soil-vapor extraction (SVE)/Biovent system. The property owners were updated on clean up progress.

Sara Marshall

5/4/2020

Document, Report, or Work plan Review - other

DEC has provided comments on the Draft Moose Creek Pipeline Release Moose Creek, Alaska 2020 Summer (High) Groundwater Monitoring Work Plan April 2020 provided by Defense Logistics Agency - Energy on April 17, 2020. The Groundwater Monitoring work plan presents the methods for the monitoring and collection of groundwater samples to be conducted during the summer of 2020. Ten monitoring wells will be sampled and the results will be compared against the state regulatory criteria and previous sampling events.

Sara Marshall

8/19/2020

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) has completed a review of the "Moose Creek Pipeline Release Moose Creek, Alaska 2020 Summer Groundwater Monitoring Report Draft August 2020" provided by Defense Logistics Agency - Energy on August 18, 2020. The Groundwater Monitoring Report presents the results of the groundwater monitoring and sampling activities conducted at the North Pole Eielson Release Site in Moose Creek, Alaska. Ten monitoring wells were sampled and the results were compared against the state regulatory criteria and previous sampling events.

Sara Marshall

3/17/2021

Document, Report, or Work plan Review - other

DEC provided comments on Moose Creek Pipeline Release Moose Creek, Alaska 2020 Winter Groundwater Monitoring Report Draft, March 2021. The draft report provided data from the winter groundwater monitoring and sample analysis. Nine out of the planned ten wells were sampled in accordance with the 2020 Winter (Low) Groundwater Monitoring Work Plan Final, November 2020.

Axl LeVan

4/14/2021

Document, Report, or Work plan Review - other

DEC reviewed and issued an approval letter for the Final Moose Creek Pipeline Release, Moose Creek, Alaska, 2020 Winter Groundwater Monitoring Report, dated April 2021.

Axl LeVan

4/23/2021

Document, Report, or Work plan Review - other

DEC reviewed and provided comments on Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2021 First Five-Year Review, April 2021. The draft evaluates the implementation and performance of the remedy outlined in the 2016 Decision Document for the Moose Creek Pipeline Release, and is the first five-year review. The document also provides recommendations to address any issues discovered during the review.

Axl LeVan

4/23/2021

Meeting or Teleconference Held

DEC and Defense Logistic Agency PM had a meeting to discuss the current status of DLA sites. Current and expected documents regarding the sites were discussed. The status of clean-up efforts and monitoring at sites was also discussed.

Axl LeVan

6/11/2021

Document, Report, or Work plan Review - other

DEC backchecked and provided comments on DraftFinal Moose Creek Pipeline Release, Moose Creek, Alaska 2021 First Five-Year Review, April 2021. The draft evaluates the implementation and performance of the remedy outlined in the 2016 Decision Document for the Moose Creek Pipeline Release, and is the first five-year review. The document also provides recommendations to address any issues discovered during the review.

Axl LeVan

6/15/2021

Document, Report, or Work plan Review - other

DEC reviewed and provided comments on "Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Groundwater Monitoring Work Plan, Draft May 2021" received from the Defense Logistics Agency on May 21, 2021. The Groundwater Monitoring work plan presents the methods for the monitoring and collection of groundwater samples to be conducted during the summer and fall of 2021. Ten monitoring wells will be sampled and the results will be compared against the state regulatory criteria and previous sampling events.

Axl LeVan

6/30/2021

Document, Report, or Work plan Review - other

DEC Approved the Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 First Five-Year Review, June 2021. The document evaluates the implementation and performance of the remedy outlined in the 2016 Decision Document for the Moose Creek Pipeline Release, and is the first five-year review. The document also provides recommendations to address any issues discovered during the review. All previous comments by DEC were addressed and the document was approved as final.

Axl LeVan

7/23/2021

Site Visit

DEC staff conducted a site visit. DEC and Defense Logistics Agency (DLA) staff walked the DESC MP 20.3 Eielson Pipeline Release - Moose Creek and multiple monitoring wells and soil vapor extraction wells in good condition. All monitoring wells and soil vapor extraction wells were easy to walk to. DLA staff showed DEC staff the Soil Vapor Extraction system in operation. The fence around the Soil Vapor Extraction System was also in good condition.

Axl LeVan

8/13/2021

Document, Report, or Work plan Review - other

DEC approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Groundwater Monitoring Work Plan, July 2021" received from the Defense Logistics Agency on August 12, 2021. The Groundwater Monitoring work plan presents the methods for the monitoring and collection of groundwater samples to be conducted during the summer and fall of 2021. Ten monitoring wells will be sampled and the results will be compared against the state regulatory criteria and previous sampling events.

Axl LeVan

2/8/2022

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) has completed a review of the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Summer Groundwater Monitoring Report, January 2022" submitted by Defense Logistics Agency - Energy on February 1, 2021. DEC provided comments on the document on February 8, 2022. This document describes the Summer 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

2/8/2022

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) has completed a review of the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Fall Groundwater Monitoring Report, January 2022" submitted by Defense Logistics Agency - Energy on February 2, 2021. DEC provided comments on the document on February 8, 2022. This document describes the Fall 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

5/19/2022

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) has reviewed and approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Fall Groundwater Monitoring Report, May 2022" submitted by Defense Logistics Agency - Energy on May 11, 2021. This document describes the Fall 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

5/19/2022

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) has reviewed and approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2021 Summer Groundwater Monitoring Report, May 2022" submitted by Defense Logistics Agency - Energy on May 11, 2021. This document describes the Summer 2021 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

7/6/2022

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conversation (DEC) has completed a review of the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" received on June 24, 2022. The document describes the plans for the summer and fall 2022 sampling events. The sampling events will include groundwater monitoring and collection of groundwater samples for chemical analysis at thirteen wells: MW-01, MW-02, MW-03, MW-04, MW-05, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

7/26/2022

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conversation (DEC) approved the "Draft Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" received on July 20, 2022. The document describes the plans for the summer and fall 2022 sampling events. The sampling events will include groundwater monitoring and collection of groundwater samples for chemical analysis at thirteen wells: MW-01, MW-02, MW-03, MW-04, MW-05, MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

6/2/2023

Document, Report, or Work plan Review - other

DEC approved the "Final Moose Creek Pipeline Release, 2022 Summer Groundwater Monitoring Report" submitted to DEC May 22, 2023. This document describes the Summer 2022 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-03, MW-04, MW-05 MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

6/12/2023

Document, Report, or Work plan Review - other

DEC reviewed an addendum updating the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" for the 2023 season. DEC provided one comment requesting addition information.

Axl LeVan

7/21/2023

Document, Report, or Work plan Review - other

DEC approved the "Final Moose Creek Pipeline Release, 2022 Winter Groundwater Monitoring Report" submitted to DEC July 18, 2023. This document describes the Winter 2022 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-03, MW-04, MW-05 MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23.

Axl LeVan

7/21/2023

Document, Report, or Work plan Review - other

DEC approved the "Technical Memorandum 2023 Groundwater Sampling Moose Creek Pipeline Release Site, July 2023". The document is an addendum to the previous "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2022 Groundwater Monitoring Work Plan, June 2022" and updates the plan for 2023 sampling.

Axl LeVan

4/4/2024

Meeting or Teleconference Held

DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.

Axl LeVan

4/4/2024

Meeting or Teleconference Held

DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.

Axl LeVan

4/4/2024

Meeting or Teleconference Held

DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.

Axl LeVan

4/4/2024

Meeting or Teleconference Held

DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.

Axl LeVan

4/4/2024

Meeting or Teleconference Held

DEC attended a meeting with DLA and affected homeowners to discuss progress on site cleanup.

Axl LeVan

5/14/2024

Document, Report, or Work plan Review - other

DEC reviewed and provided comments on the "Draft 2024 Groundwater Monitoring Work Plan, Moose Creek Pipeline Release Site, May 2024". The Summer and Fall 2024 sampling event are described, which will include groundwater monitoring and collection of groundwater samples for chemical analysis at ten wells: MW-01, MW-02, MW-03, MW-04, MW-05 MW-06, MW-07, MW- 08, MW-09, MW-10, MW-13, MW-15, and MW-23. The analysis of monitored natural attenuation parameters in four monitoring wells will be included.

Axl LeVan

5/14/2024

Document, Report, or Work plan Review - other

Axl LeVan

5/21/2024

Document, Report, or Work plan Review - other

DEC reviewed and approved the "2024 Groundwater Monitoring Work Plan, Moose Creek Pipeline Release Site, May 2024" based on updates to the document.

Axl LeVan

7/11/2024

CERCLA Removal Action Report

DEC reviewed and approved the "Final 2024 Remedial Action Report for Remedial Action – Construction at Multiple Sites: CG517, SS079, TU077 and ZZ088, Eielson Air Force Base, Alaska, May 2024" based on response to DEC comments on the draft document. The report outlines the excavation of contaminated material at the four sites and the installation of groundwater monitoring wells for continued monitoring at the three of the sites.

Axl LeVan

7/22/2024

Document, Report, or Work plan Review - other

DEC reviewed and approved the "Final Moose Creek Pipeline Release, Moose Creek, Alaska 2023 Groundwater Monitoring Report, June 2024." This document describes the Summer and Winter 2023 sampling event, which included groundwater monitoring and collection of groundwater samples for chemical analysis at thirteen monitoring wells. DEC first reviewed the draft document 7/9/2024.

Axl LeVan

9/16/2024

Document, Report, or Work plan Review - other

DEC reviewed and approved "Work Plan Addendum 2024 Groundwater Sampling, Moose Creek Pipeline Release Site, May 2024". This addendum added PFAS sampling to well MW-06.

Axl LeVan

Contaminant Information

Name

Level Description

Media

Comments

Control Type

Type

Details

Requirements

Description

Details

Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report Final, dated April 2019

Moose Creek Pipeline Release Moose Creek, Alaska 2018 Low Groundwater Monitoring Work Plan Final. November 2018.

No associated sites were found.

Missing Location Data

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Site Report: DESC MP 20.3 Eielson Pipeline Release - Moose Creek

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Moose Creek Pipeline Release, Moose Creek, Alaska, 2018 Groundwater Monitoring Report Final, dated April 2019

Moose Creek Pipeline Release Moose Creek, Alaska 2018 Low Groundwater Monitoring Work Plan Final. November 2018.

Missing Location Data

State of Alaska Department of Environmental Conservation