| Action Date |
Action |
Description |
DEC Staff |
| 5/12/2011 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 5/17/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79085 name: Header Manifold |
Mitzi Read |
| 5/17/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79086 name: Header Area A (Upgradient) |
Mitzi Read |
| 5/17/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79087 name: Header Area B (South) |
Mitzi Read |
| 5/17/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79088 name: Header Area C (Downgradient) |
Mitzi Read |
| 5/24/2011 |
Document, Report, or Work plan Review - other |
Final reports reviewed and approved. Comments sent to RP and consultant
(incomplete CSM and further dilneation required). |
Jim Fish |
| 6/15/2011 |
Site Visit |
Site visit with PERP to see location of exposed underground piping and recent site characterization work. |
Jim Fish |
| 7/7/2011 |
Meeting or Teleconference Held |
Meeting with Crowley, OASIS Environemtnal, PERP, IPP, and CS staff to discuss compliance issues; potential sources of contamination, results from 2010 & 2011 field season, conceptual site model, and future assessment plans. |
Jim Fish |
| 12/21/2011 |
Document, Report, or Work plan Review - other |
Fall GW sampling report received. |
Jim Fish |
| 5/1/2012 |
Potentially Responsible Party/State Interest Letter |
PRP letter sent to RP (Crowley Maritime Corporation, for both sites 110.30.011 and 110.38.010. |
Jim Fish |
| 5/23/2012 |
Document, Report, or Work plan Review - other |
Review of work plan for additional groundwater sampling & pore water sampling. Suggested modifications to pore water collection locations, TAH and TAqH caluclation methods, and additional contaminated groundwater in the future. |
Jim Fish |
| 9/21/2012 |
Document, Report, or Work plan Review - other |
Report for groundwater sampling reviewed; concurred with the pore water sampling & continued deployment of the pressure transducers in monitoring wells. Recommended additional characterization towards the east to full delineate contamination in this area. Also rrecommended additional characterization to the east and south of the relic railroad tracks (near the middle tank farm) to better understand the distribution of contaminants – particularly if evidence suggest the Nenana River is a losing river for part of the year.
|
Jim Fish |
| 11/1/2012 |
Update or Other Action |
Pore water sampling delayed/postponed until fall of 2013. |
Jim Fish |
| 12/14/2012 |
Document, Report, or Work plan Review - other |
Fall 2012 Groundwater sampling report approved. Sampling activities cancelled due to cold weather (-30 F); postponed until Spring & Fall of 2013. New work plans pending. |
Jim Fish |
| 5/13/2013 |
Document, Report, or Work plan Review - other |
2103 workplan for additional soil borings and permenannet monitoring wells installation, retrieval and redeplomyment of pressure transducers, and pore water sampling (spring and fall) approved. Mann-Kendall analysis proposed for trend analysis. |
Jim Fish |
| 10/15/2013 |
Update or Other Action |
Received Spring 2013 Additional Site Assessment and Groundwater Monitoring Report for review. |
Jim Fish |
| 12/10/2013 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PERP staff John Ebel. Spill no. 10309914602; spill date = 5/26/10; substance = petroleum; quantity = unknown; PERP file no. 110.02.016. |
Mitzi Read |
| 12/17/2013 |
Document, Report, or Work plan Review - other |
Fall 2013 Nenana Groundwater Monitoring Report received.
|
Jim Fish |
| 6/10/2014 |
Document, Report, or Work plan Review - other |
2014 Groundwater monitoring Work plan received |
Jim Fish |
| 6/19/2014 |
Site Characterization Workplan Approved |
Workplan for groundwater and pore water moniotring, and LNAPL presence/evaluation approved followong acknowledgement and implementation of ADEC recommendations. |
Jim Fish |
| 6/26/2014 |
Update or Other Action |
Approved alternate installation (GeoProbe) for pore water samplers along the Tanana River; slide-hammer & vapor implants me trefusal at multiple locations. |
Jim Fish |
| 7/29/2014 |
Document, Report, or Work plan Review - other |
Proposed monitoring well installations (in place of pore water collection) approved. |
Jim Fish |
| 3/16/2015 |
Document, Report, or Work plan Review - other |
Reviewed Spring 2014 Groundwater & Pore water monitoring report. free product observed in monitoring well MW-13. GRO above groundwater cleanup levels in MW-5, MW-7, MW-13; RRO above groundwater cleanup levels in MW-3, MW-4; benzene above groundwater cleanup levels in MW-3, MW-5, MW-7, and MW-13; toluene and EDC above groundwater cleanup levels in MW-13; and Dibenzo(a,h)anthracene above groundwater cleanup level in MW-3.
TAH values exceeded Alaska Water Quality Standards in monitoring wells MW-4, MW-5, MW-7 and MW-13; TAqH values exceed standards in MW-1, MW-4, MW-5, MW-7 and MW-13.
Transducer data indicates the Tanana River is a gaining river until the middle of June, with surrounding groundwater elevations higher than the river, after which it becomes a losing river, and groundwater gradient reverses. Pore water samples collection is difficult because of near-shore substrate; consultant recommends additional near-river monitoring wells be installed. |
Jim Fish |
| 6/16/2015 |
Update or Other Action |
Received 2015 groundwater Monitoring Work Plan |
Jim Fish |
| 7/14/2015 |
Update or Other Action |
Groundwater monitoring work plan approved. A Geotek Product Recovery Canister will be installed in monitoring well MW-13; soil borings will be advanced around MW-13 to characterize extent of soil contamination; pressure transducers will be installed in wells MW-2, MW-8 and MW-12. Groundwater wells will be sampled July & September/October. |
Jim Fish |
| 7/21/2015 |
Update or Other Action |
Contacted consultant - groundwater monitoring event to begin 22 July, but soil boring investigation near monitoring well MW-13 happen during second groundwater monitoring event (September) |
Jim Fish |
| 3/25/2016 |
Update or Other Action |
Met consultant over a phone conference between previous PM and myself. 2015 reports for both the rail line and the header areas are in review now and are expected delivered by mid-April. |
Laura Jacobs |
| 6/1/2016 |
Update or Other Action |
Received Spring 2015 Groundwater Monitoring Report; Nenana Header Area. |
Laura Jacobs |
| 8/3/2016 |
Document, Report, or Work plan Review - other |
Review letter sent to RP regarding the 2015 Spring and Fall Groundwater Monitoring reports. Findings included: (Spring-July 22-24)Exceedences of the DEC Table C criteria from monitoring wells MW-3, MW-4, MW-5, MW-7, and MW-14 for analytes GRO, DRO, Benzene, TAH, and TAqH. All other analytes were either not above DEC cleanup criteria or were not detected at the reported detection limit. (Fall-September 22-25) A passive skimmer was placed in MW-13 to recover free product and collected an amount less than one gallon of an oil/water mixture during 2015. Results from limited soil subsurface investigation documented DRO, GRO, RRO, and VOC (primarily BTEX) compounds exceeded DEC's Table B1 and B2 criteria primarily along the rail road track and within the above ground storage tanks containment berms. |
Laura Jacobs |
| 4/12/2017 |
Meeting or Teleconference Held |
Meeting with CPD Alaska, LLC C Godden and P Kodial, Weston Solutions, Inc. M Mylet to discuss site progress and issues to achieve before site closure. |
Laura Jacobs |
| 4/12/2017 |
Meeting or Teleconference Held |
DEC met with representatives from CPD Alaska, LLC and Weston Solutions, Inc. (their consultant)to discuss progress at sites in Nenana and Kotzebue. DEC will send review comments, historical information update for Nenana terminal, and make recommendations for work at the Kotzebue sites. |
Laura Jacobs |
| 4/12/2017 |
Long Term Monitoring Established |
Meeting with M. Mylet, Weston Solutions, C. Godden, Crowley Petroleum Distribution and P. Kodial, Crowely Petroleum Distribution, and DEC staff to discuss how to proceed at site to work towards closure. DEC will send a letter describing what has occurred at the Lower Tank Farm, and letter review comments of Fall 2016 report. |
Laura Jacobs |
| 4/18/2017 |
Update or Other Action |
DEC sent an historical accounting of spills and associated activities at the Lower Tank Farm to CPD Alaska, LLC for their information. |
Laura Jacobs |
| 4/21/2017 |
Document, Report, or Work plan Review - other |
Review comments were sent to RP regarding the "Fall 2016 Groundwater Monitoring Report; Nenana Header (ADEC File No. 110.38.010) and Rail Line (ADEC File Nol. 110.38.011) Areas; Nenana, Alaska". |
Laura Jacobs |
| 5/30/2017 |
Update or Other Action |
Crowley staff P. Kodial called to discuss outstanding items Crowley needs before they can proceed with site progress. DEC will provide review comments from a 2012 report for Kotzebue Airport sites and Crowley will provide work plans for all sites. |
Laura Jacobs |
| 8/3/2017 |
Update or Other Action |
DEC opportunistically conducted a site visit. Crowley staff were available to show monitoring wells and location of tank farms. |
Laura Jacobs |
| 8/15/2017 |
Document, Report, or Work plan Review - other |
DEC received, reviewed and approved the work plan proposed by Crowley to breach the middle tank farm berm to allow removal of emptied and decommissioned above ground storage tanks. Soils will be field sampled for petroleum contamination. Soils found not to be above a screening level will be used on site for fill. |
Laura Jacobs |
| 9/12/2017 |
Document, Report, or Work plan Review - other |
DEC reviewed work plans "2017 Semi-Annual Groundwater Monitoring and Subsurface Investigation Work Plan, Nenana Header and Rail Line Area, Crowley Nenana Facility" and "2017 Nenana Lower Tank Farm Work Plan, Limited Site Characterization, Nenana Facility, Lower Tank Farm", and approved with slight adjustments. |
Laura Jacobs |
| 9/15/2017 |
Document, Report, or Work plan Review - other |
RP's consultant submitted a report regarding the soil characterization of the berm to be removed from around the Middle Tank Farm. Soils were found to have very low levels of DRO and RRO. DEC recommended spreading soils greater than 100 feet from surface waters or water well supplies. |
Laura Jacobs |
| 6/4/2018 |
Document, Report, or Work plan Review - other |
DEC staff reviewed the reports "2017 Limited Site Characterization Report for Nenana Lower Tank Farm - Crowley Nenana Fuel Terminal Lower Tank Farm", and "2017 Semi-Annual Groundwater Monitoring and Subsurface Investigation Report; Nenana Header and Rail Line Areas; Nenana, Alaska". Soil borings and groundwater monitoring reveal petroleum contamination in soils, typically, from 5 - 10 ft below ground surface in areas predominantly centered around the Rail Area, Middle Tank Farm and Lower Tank Farm. The RPs Qualified Environmental Professional, Weston Solutions, is recommending additional sample events to determine the horizontal and vertical extents of contaminants of concern. |
Laura Jacobs |
| 6/4/2018 |
Document, Report, or Work plan Review - other |
DEC staff sent review comments on both the "2017 limited Site Characterization Report for Nenana Lower Tank Farm - Crowley Nenana Fuel Terminal Lower Tank Farm", and "2017 Semi-Annual Groundwater Monitoring and Subsurface Investigation Report; Nenana Header and Rail Line Areas; Nenana, Alaska". The RP has recommended additional soil characterization surrounding several bore hole locations at the former Lower Tank Farm to determine the horizontal and vertical extents of contamination. Weston also recommends continued semi-annual groundwater sampling events in summer and fall 2018. DEC has recommended remedial techniques for identified source areas. |
Laura Jacobs |
| 10/8/2018 |
Document, Report, or Work plan Review - other |
Approval of fall sample event based upon spring work plan and additional requested activities as outlined in a June 2018 comment letter from ADEC. |
Laura Jacobs |
| 7/2/2019 |
Document, Report, or Work plan Review - other |
ADEC reviewed the "2018 Annual Groundwater Monitoring Report; Nenana Header and Rail Line Areas; Nenana, Alaska". Free product continued to be found in MW-7R, and also MW-13. Monitoring wells 1-6, 10R, 11, 12, and 14 through 16 were sampled. During the 2018 sample event, groundwater was found between 6.77 to 10.06 feet below top of well casing. Groundwater flow direction was documented to be from south to north. Gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), benzene, 1-methylnaphthalene, and naphthalene were reported in at least one monitoring well with a concentration that exceeded the ADEC Table C criterion for groundwater. Also, TAH (sum of benzene, toluene, ethylbenzene, and xylenes [BTEX]) and TAqH (sum of BTEX and polynuclear aromatic hydrocarbons) were found in some of the shoreline wells with concentrations that exceeded the Alaska Water Quality Standard criterion. |
Laura Jacobs |
| 10/11/2019 |
Update or Other Action |
Final 2018 Annual Groundwater Monitoring Report received. |
Laura Jacobs |
| 10/15/2019 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed the RP's request for a quick turnaround for approval to temporary work plan. ADEC staff wrote comments, conditional approval, and documented July meeting agreements. |
Laura Jacobs |
| 8/13/2020 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed and provided comment on the RP's Remedial Options Assessment for remedial efforts to address ongoing seepage of petroleum contamination into the Tanana River. |
Laura Jacobs |
| 8/24/2020 |
Document, Report, or Work plan Review - other |
Annual groundwater monitoring report reviewed by ADEC staff. Findings are similar to past year's, with the addition of more information about the two separate plumes indicating different source areas. Recommendations include actively managing free product in a couple of the monitoring wells to determine best approach to remove as much free product as possible, and continued monitoring to follow plume stability. |
Laura Jacobs |
| 9/18/2020 |
Update or Other Action |
A work plan was received to decommission certain monitoring wells and conduct annual groundwater monitoring around the Nenana Fuel Terminal facility |
Laura Jacobs |
| 10/5/2020 |
Site Characterization Workplan Approved |
ADEC staff reviewed and approved the work plan to conduct annual groundwater monitoring, and decommissioning of one well, MW-12 on the Alaska Railroad property. |
Laura Jacobs |
| 3/5/2021 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed the "Report for October 2020 Groundwater Monitoring Event; Nenana Header and Rail Line Areas, Nenana, Alaska". Groundwater monitoring occurred at wells 1-6, 7R, 9, 10R,11, 13-16. MW-12 was decommissioned as it was located on Alaska Railroad property, was considered a well to determine background levels, and has never had detectable concentrations of contaminants. Monitoring well MW-7R had measurable NAPL and so was not sampled. Wells MW-09 and -16 could not be sampled because of a barge location. The passive skimmer at MW-13 was not set properly and did not collect fuel. Contaminants above groundwater cleanup levels continued to be centered around two source areas: the marine header, and the Alaska Railroad rail line area. |
Laura Jacobs |
| 8/26/2022 |
Potentially Responsible Party/State Interest Letter |
Potentially Responsible Party letters were sent to the Alaska Railroad and the City of Nenana for the three sites identified as contaminated on the Nenana Fuel Terminal property. |
Laura Jacobs |
| 7/25/2023 |
Document, Report, or Work plan Review - other |
DEC has reviewed two documents submitted in December 27, and 22, 2022 for the "October 2022 Groundwater Monitoring Event; Nenana Header and Rail Line Areas, Nenana, Alaska and Passive Skimmer Free-Product Recovery Checks, 2021-2022; Middle Tank Farm Rail Line Area, Nenana, Alaska", respectively. DEC approves both reports. Continued monitoring of 10 wells documented continued exceedances of petroleum contamination including gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), benzene, naphthalene, 1,2-dichloroethane (DCA), and 1,3,5-Trimethylbenzene in groundwater monitoring wells MW-1, MW-2, MW-3, MW-4, MW-5, MW-14, MW-15. It has been suggested that the data supports the potential for two separate source areas, one at the former Header Area and a second to the west of the Rail Line Area, although the extent of contamination has not be fully delineated to the east and south. Light Non-Aqueous Petroleum Liquid (LNAPL) continues to be present and collected from both recovery wells MW-13 and MW-7R. Exceedances of the Alaska Water Quality Standards continue in wells MW-1, MW-3, MW-4, MW-14, and MW-15 for petroleum criteria (Total Aqueous Hydrocarbons and Total Aromatic Hydrocarbons). |
Laura Jacobs |
| 8/6/2024 |
Workplan Requested |
Letter requesting additional remediation and characterization was sent on this date after the issue date of July 16, 2024. |
Laura Jacobs |
