| Action Date |
Action |
Description |
DEC Staff |
| 10/24/1991 |
Underground Storage Tank Site Characterization or Assessment |
SA1; Thomas rec'd report by D&M "Site Assessment/Tank closure" describing removal of four 10,000 gal. USTs. |
Former Staff |
| 12/27/1991 |
Underground Storage Tank Site Characterization or Assessment |
SA1R; Thomas reviewed SA and determined that residual contamination remains. Approved placing 1200 yds. of contaminated material back in pit contingent upon release investigation plan. ADEC requested additional work to delineate plume and develop corrective action plan. |
Former Staff |
| 2/4/1992 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77610 ADD; |
Former Staff |
| 2/4/1992 |
Site Added to Database |
|
Former Staff |
| 2/5/1992 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU; Dupee: Site Manager (Ben) reviewed SA and determined that residual contamination remains. Approved placing 1200 yards of contaminated material back in pit contingent upon release investigation plan. ADEC requested additional work to delineate plume and develop corrective action plan. : LCAU date changed DB conversion |
Former Staff |
| 6/6/1994 |
Update or Other Action |
CORR; Wingerter sent letter informing RP of their financial liability under new ADEC cost recovery policy. State is authorized, under Section 9003(h) of the Resource Conservation and Recovery Act to take action on this LUST facility. |
Former Staff |
| 1/31/1995 |
Update or Other Action |
UPD; SITE SUMMARY: Tanks removed in 1992. Residual contamination remains but never addressed. Contact PRP and request revised Release Investigation or corrective action plan. Unsure whether GW impacted. |
Former Staff |
| 8/23/1995 |
Update or Other Action |
CORR; Sent a letter to Petroleum Sales requesting an update on action that has taken place at their facility since last summer. |
Former Staff |
| 11/20/1997 |
Update or Other Action |
ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: CEM LEASING, INC. DBA PETROLEUM |
Former Staff |
| 8/27/2002 |
Update or Other Action |
State Interest letter, with cost recovery language sent to UNOCAL requiring that further action be taken. |
Janice Wiegers |
| 6/24/2003 |
Update or Other Action |
Work plan for site characterization submitted. Seven wells and two geoprobe points planned to investigate lateral extent of soil and groundwater contamination. |
Janice Wiegers |
| 8/28/2003 |
Update or Other Action |
Approved soil transport to OIT for cuttings resulting from site characterization. |
Janice Wiegers |
| 11/10/2003 |
Underground Storage Tank Site Characterization or Assessment |
Site characterization submitted by Geoengineers. Nine soil borings were developed into GW wells. 2.31 ft of free product was encountered in GEI-5. |
Torsten Ernst |
| 7/28/2004 |
Document, Report, or Work plan Review - other |
Groundwater monitoring and product recovery testing performed spring 2004. Lead and VOCs analysis were performed in two wells, lead was not present though btex constituents were. GRO, DRO, ethylbenzene, xylenes and benzene were present in many samples. |
Torsten Ernst |
| 2/1/2005 |
Document, Report, or Work plan Review - other |
Reviewed September 2004 GW monitoring. Free product GEI-5 was measured at 2.19 feet and groundwater flow direction was to the NW. |
Torsten Ernst |
| 12/9/2005 |
Document, Report, or Work plan Review - other |
Groundwater monitoring report received. O.5 feet of free product was observed in GEI-5. Site was previously leased by Unocal which has been purchased by Chevron. Sent letter outlining required site characterization work. |
Kim DeRuyter |
| 9/19/2006 |
Document, Report, or Work plan Review - other |
Groundwater Monitoring Report dated Sept 15, 2006 was received by ADEC on Sept 18, 2006. The report summarizes the results of the April 19, groundwater monitoring event. Nine monitoring wells were installed in 2003. This April, 2 wells, GEI-3, and GEI-5, contained free product, at respective thickness of 0.53 feet and 0.74. Product was removed from the wells, but no attempts were made at ongoing product recovery. Four wells, were not sampled because they were covered with snow and ice. Of the remaining 3 wells, two contained DRO and BETX analytes above the MCL. The extent of contaminant migration has not been established at the site. |
Kim DeRuyter |
| 10/10/2006 |
Update or Other Action |
Received a call from RP, they will put together a CSM and a work plan for review. |
Kim DeRuyter |
| 2/7/2007 |
Document, Report, or Work plan Review - other |
2006 Fall Groundwater monitoring report received. Free product was observed in several wells, DRO was observed at 690 mg/L in GEI-1 up from 327 in 2005. VOCs, EDB, MTBE, and PAHs were eliminated as contaminants of concern during the 2006 field season. GRO, DRO, and benzene are the only COCs at the site. The extent of the plume has not been delineated. Sent another request for a CSM for the site. Lab QA has was preformed by BBL, but not by the ADEC PM. |
Kim DeRuyter |
| 2/7/2007 |
Exposure Tracking Model Ranking |
Baseline ranking complete |
Kim DeRuyter |
| 7/12/2007 |
Update or Other Action |
ADEC received the First Semi-Annual 2007 Groundwater Monitoring Report for the FIA (Former Unocal Bulk Plant) site. According to the report, the dissolved phase concentrations remain relatively stable at the site. ARCADIS recommends eliminating RRO analysis from the sampling program for this site. |
Deborah Williams |
| 1/16/2008 |
Update or Other Action |
DEC received the Second Semi-Annual 2007 Groundwater Monitoring Report Chevron 306443 (Former Unocal Bulk Plant 0207). Three of the monitoring wells contained LNAPL. All other wells contained DRO's above cleanup levels. ARCADIS recommends eliminating RRO and VOC's (except BTEX) analysis from the groundwater monitoring program. |
Tamara Cardona-Marek |
| 6/23/2008 |
Update or Other Action |
ADEC received and approved the Additional Assessment Work Plan for the Former Unocal Bulk Plant. 13 soil borings will be installed on site to delineate the extent of impacted soil and LNAPL. Five additional monitoring wells will also be installed . A LNAPLbail-down test will be conducted to determine whether it is recoverable. |
Tamara Cardona-Marek |
| 7/17/2008 |
Update or Other Action |
ADEC met with Dan Carrier (Chevron) and Greg Montgomery (Arcadis) to discuss actions taking place on site. Additional soil borings and monitoring wells are being installed on site this week. A recovery well will also be installed to attempt product recovery. |
Tamara Cardona-Marek |
| 8/29/2008 |
Update or Other Action |
Requested analysis of lead in soil prior to approval for soil transport and disposal by ASR in Anchorage. |
Tamara Cardona-Marek |
| 9/19/2008 |
Update or Other Action |
Approved disposal of contaminated soil resulting from well installation and identified post-treatment analysis for ASR facility. |
Tamara Cardona-Marek |
| 1/5/2009 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 77610 name: Former tanks and dispensing island |
Tamara Cardona-Marek |
| 3/13/2009 |
Meeting or Teleconference Held |
ADEC discussed site with Arcadis and Chevron on 3/3/2009. ADEC agreed on delaying additional site characterization activities until 2010 due to the current construction work at the airport. Monitoring will continue on a semi-annual basis as scheduled. Measurement of MNA parameters was requested and addition of graphs and plume maps in the reports. |
Tamara Cardona-Marek |
| 5/19/2009 |
Update or Other Action |
A drum disposal request for purge water was sent and approved. Water contained benzene above cleanup levels. |
Tamara Cardona-Marek |
| 1/12/2010 |
Document, Report, or Work plan Review - other |
DEC reviewed the First Semi Annual 2009 Groundwater Monitoring Report and Geochemical Parameter Monitoring Results. Hydrocarbon concentrations have remained relatively stable. Free product continues to be detected in several of the wells. No lead or EDB was detected in any of the monitored wells (which included only MW1, MW3, MW5, GEI4 and GEI8). Intrinsic bioremediation parameters will not be monitored again until free product is no longer present. |
Tamara Cardona-Marek |
| 2/2/2010 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the Second Semi-Annual 2009 Groundwater Monitoring Report. Groundwater elevation sduring this sampling event were similar to those observed during low water season. Groundwater samples from wells GEI-4 and MW-1 contained benzene above cleanup levels (16 and 25 ppb). Wells GEI1, GEI3, GEI5, GEI6, GEI7,and GEI9 were not sampled due to the presence of free product. No MNA parameters were measured during this sampling event. Groundwater was sampled for VOC's, PAH's,and lead. |
Tamara Cardona-Marek |
| 2/17/2010 |
Meeting or Teleconference Held |
DEC met with Chevron and Arcadis to discuss activities at this site for 2010. Plans for 2010 include conducting additional site assessment including five monitoring wells and two soil borings to determine horizontal and vertical extent. A workplan will be submitted detailing the methods and locations of proposed activities. |
Tamara Cardona-Marek |
| 6/18/2010 |
Document, Report, or Work plan Review - other |
ADEC received the 2010 Work Plan for Additional Assessment from Arcadis. Five additional monitoring wells will be installed. Soil samples to be collected during well installation. |
Tamara Cardona-Marek |
| 6/21/2010 |
Site Characterization Workplan Approved |
2010 Work Plan for Additional Assessment has been approved. |
Tamara Cardona-Marek |
| 10/19/2010 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the First Semi Annual 2010 Groundwater Monitoring Report. Results are consistent with previous events. LNAPL detected in several wells. |
Tamara Cardona-Marek |
| 4/21/2011 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the 2010 Site Assessment and Second Semi Annual Groundwater Monitoring Report. Samples were collected from soil borings during additional site characterization. Contamination in soil (DRO, GRO and BTEX) was highest at a depth of 8-12 feet in the soil borings installed. However, some contamination was also detected at 2 feet. LNAPL continues to be present in several of the monitoring wells. Product recovery will be done twice a year during the lowest water period that is not during the winter. |
Tamara Cardona-Marek |
| 9/14/2011 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the First Semi Annual 2011 Groundwater Monitoring Report. DRO was higher than previous events in teh wells sampled. LNAPL was present in wells GEI-7 and GEi-9. Trace LNAPL was detected in wells GEI-1, GEI-3, GEI-5 and MW-8. Only well GEI-7 had recoverable LNAPL. |
Tamara Cardona-Marek |
| 1/25/2012 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the Second Semi-Annual 2011 Groundwater Monitoring Report. Samples from wells GEI-2, GEI-8, MW-1 through MW-7, MW-9 and MW-10 were submitted for DRO, GRO, RRO and BTEX analysis.
GEI-5 and GEI-6 were not sampled due to presence of LNAPL. GEI-1, GEI-3 through GEI-7, GEI-9, MW-8 and RW-1 were not sampled due to observed LNAPL globules in the bailer during sampling. DRO was highest in GEI-8 (99 mg/L), GRO was highest is MW-1 (2.6 mg/L), and benzene was highest in MW-1 (0.032 mg/L). |
Tamara Cardona-Marek |
| 7/30/2012 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the 2012 Groundwater Monitoing Work Plan. Arcadis plans to sample existing 20 monitoring wells semi annually. They will also complete LNAPL recovery during those sampling events. |
Tamara Cardona-Marek |
| 8/28/2012 |
Meeting or Teleconference Held |
DEC met with Chevron and Arcadis to discuss actions for 2012-2013. An updated conceptual site model will be completed to identify any existing data gaps. Monitoring will be reduced to once a year and dataloggers will be installed on monitoring wells to obtain a year-round trend. Socks to recoved free product will be tested to see how they perform at the site. Clean-up plan is pending since data gaps need to be identified first. |
Tamara Cardona-Marek |
| 11/2/2012 |
Update or Other Action |
DEC received and reviewed the First Semi-Annual 2012 Groundwater Monitoring Report. LNAPL was present in wells GEI-5, GEI-6, GEI-7, GEI-9, MW-1, GEI-1, GEI-3, GEI-4, MW-3, MW-8 and RW-1. GEI-8 and MW-9 were not sampled due to obstructions in the wells. DRO exceeded cleanup levels in well MW-5. Sampling at the site will continue on an annual basis. DEC commented on the report and requested additional conclusions on the included graphs and MNA parameters. |
Tamara Cardona-Marek |
| 4/29/2013 |
Meeting or Teleconference Held |
DEC met with Chevron, Arcadis, and a representative from FIA to discuss the status of the site. There is measurable product in the majority of the wells onsite. Arcadis and DEC agree that the plume is not fully delineated downgradient of the current wells on site. Additional wells are planned to the northwest, but there are concerns about interfering with the Everts air operation as monitoring wells may need to be placed in an area in which airplanes taxi and maintanence is conducted. The current plan is to use grab samples (GeoProbe) or UVOST to delineate the current plume and help determine areas to place wells. |
Robert Burgess |
| 9/17/2013 |
Update or Other Action |
Site symbol visually adjusted using ArcGIS, Bing Satellite imagery and documents from file. 64.812277, -147.875384. 9/17/13; MLB. |
Michelle Barnes |
| 9/24/2013 |
Site Characterization Workplan Approved |
DEC approved the 2013 Work Plan for Additional Assessment. Three monitoring wells will be installed downgradient of the known plume in the parking lot of the Era aviation facility. |
Robert Burgess |
| 10/2/2013 |
Site Visit |
DEC project manager visited the site to observe the installation of monitoring wells in the Era aviation parking lot. |
Robert Burgess |
| 1/16/2014 |
Document, Report, or Work plan Review - other |
DEC reviewed the Annual 2013 Groundwater Monitoring Report. Groundwater results are generally consistent with past sampling events. |
Robert Burgess |
| 1/27/2014 |
Document, Report, or Work plan Review - other |
DEC reviewed the 2013 Additional Site Assessment Report. Downgradient wells installed in 2013 did not contain contaminants in concentrations greater than cleanup levels. |
Robert Burgess |
| 2/14/2014 |
Document, Report, or Work plan Review - other |
DEC reviewed and commented on the Second Semi-annual 2013 Groundwater Monitoring Report. Contaminant concentrations are generally consistent with historical sampling results, however contaminants in several wells increased in concentration compared to the first semi-annual 2013 sampling event. |
Robert Burgess |
| 5/14/2014 |
Meeting or Teleconference Held |
DEC met with Chevron and ARCADIS to discuss the status of several Fairbanks area sites. At this site, the downgradient wells have confirmed that the petroleum plume is not moving off-property. Chevron plans to propose institutional controls and/or natural attenuation as the remedy for this site. |
Robert Burgess |
| 7/16/2014 |
Document, Report, or Work plan Review - other |
DEC reviewed the Remedial Action Plan submitted by ARCADIS. The proposed remedial plan consists of placing institutional controls on the site, including a prohibition for groundwater well installation, requirements for contaminated soil management if excavation occurs, and ongoing monitoring of downgradient sentinel wells. Potential exposure pathways described by ARCADIS include future exposure of surface and sub-surface soil and future exposure to groundwater through incidental ingestion or dermal exposure. The only potential receptors are construction and excavation workers. |
Robert Burgess |
| 7/16/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77610 Former tanks and dispensing island. |
Robert Burgess |
| 10/7/2015 |
Document, Report, or Work plan Review - other |
DEC reviewed the Annual 2015 Groundwater Monitoring Report submitted by ARCADIS.
Downgradient sentinel wells were monitored and do not appear to contain detectable concentrations of contaminants of concern, showing that the plume remains stable and is not migrating. Discussions regarding site closure with institutional controls and in-place plume management and/or ongoing monitoring continue. |
Robert Burgess |
| 10/6/2016 |
Meeting or Teleconference Held |
Meeting with RP and consultant on multiple Chevron sites to discuss current site status and upcoming site action. |
Shawn Tisdell |
| 3/15/2018 |
Document, Report, or Work plan Review - other |
DEC approved the Remedial Action Plan (RAP) that described historical sampling/results and outlined the remedial action of LNAPL containment, abandonment of site monitoring wells, and use of institutional controls. Based upon the site use, partial paving, and restricted access to the site the exposure pathways are potentially complete. |
Robert Burgess |
| 8/1/2018 |
Document, Report, or Work plan Review - other |
DEC reviewed the Groundwater Sampling Work Plan submitted. The work plan includes a final downgradient sampling that was requested by DEC prior to the decommissioning of monitoring wells so that the site may be closed with institutional controls. The workplan was approved. |
Robert Burgess |
| 11/8/2018 |
Meeting or Teleconference Held |
DEC met with Chevron and Arcadis to discuss several sites. The report for the 2018 groundwater monitoring will be submitted followed by a final clean up report that will propose institutional controls and contain a conceptional site model. |
Megan Roberts |
| 4/22/2019 |
Document, Report, or Work plan Review - other |
DEC received the 2018 Groundwater Monitoring Report. |
Megan Roberts |
| 4/16/2020 |
Document, Report, or Work plan Review - other |
2019 Work Plan for Well Abandonment was approved following comment resolution. This work plan details plans for abandoning wells GEI-1 through GEI-9, MW-1 through MW-13, and RW-1 at this site. |
Rebekah Reams |
| 5/1/2020 |
Meeting or Teleconference Held |
DEC staff met with the FIA Environmental Manager to provide site summaries of contaminated sites located on airport property, to discuss closure with institutional controls on airport property, and plan for future work on airport lead sites. |
Rebekah Reams |
| 5/19/2020 |
Document, Report, or Work plan Review - other |
ADEC received the Site Closure Request for this site on May 19, 2020. This report summarizes the site history, provides an updated Conceptual Site Model (CSM), and proposes Activity and Use Limitations to be implemented at the FIA – Petroleum Sales – Unocal site. |
Rebekah Reams |
| 7/10/2020 |
Document, Report, or Work plan Review - other |
ADEC provided comments on the Site Closure Request submitted by Arcadis on May 19, 2020. |
Rebekah Reams |
| 10/8/2020 |
Document, Report, or Work plan Review - other |
DEC has reviewed the Well Abandonment Report submitted by ARCADIS on September 17, 2020 and has no comments or questions regarding the report. This report documents the abandonment of monitoring wells MW-1 through MW-13, GEI-1 through GEI-9 and RW-1 at the site. |
Rebekah Reams |
| 12/4/2020 |
Document, Report, or Work plan Review - other |
DEC provided comments for the Revised Site Closure request submitted by Arcadis on October 26, 2020. This report summarizes the site history, provides an updated Conceptual Site Model (CSM), and proposes Activity and Use Limitations to be implemented at the site. |
Rebekah Reams |
| 1/15/2021 |
Meeting or Teleconference Held |
DEC staff met with Chevron Environmental Management Company (CEMC) and Arcadis to discuss Chevron sites located in Alaska during the Annual Portfolio Meeting on January 14th and 15th, 2021. |
Rebekah Reams |
| 7/15/2021 |
Document, Report, or Work plan Review - other |
DEC sent correspondence in response to the Revised Site Closure Request submitted on April 16, 2021. No additional report revisions were requested; however, DEC recommends an additional activity and use limitation be included in the environmental covenant to restrict the potential for residential land use at the site. |
Rebekah Reams |
| 5/11/2022 |
Update or Other Action |
DEC sent the revised environmental covenant to the responsible party for review and requested the site figure be revised to more accurately represent the area of remaining contamination and ensure formatting is consistent with the Recorder's Office requirements |
Rebekah Reams |
| 2/15/2024 |
Document, Report, or Work plan Review - other |
DEC sent the revised environmental covenant to Chevron for review and requested the covenant figure depicting the remaining contamination be revised to ensure readability when in black and white. |
Rebekah Reams |
| 4/12/2024 |
Update or Other Action |
Environmental covenant sent to the Fairbanks International Airport for signature |
Rebekah Reams |
