| Action Date |
Action |
Description |
DEC Staff |
| 7/24/1998 |
Site Added to Database |
|
Former Staff |
| 7/24/1998 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77793 AGRA removed a 3,000 gallon gasoline tank from the site in June of 1998. Fill pipe was loose, and vent pipe was poorly configured, lending to overfilling of the tank. 70 cubic yards of soil was thermally remediated at OIT. |
Former Staff |
| 7/24/1998 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
|
Former Staff |
| 9/1/1998 |
Underground Storage Tank Site Characterization or Assessment |
SA Conducted on 7/23/98. Report rec'd 9/1/98. Groundwater impacted based on observed sheen and single sample from pit. Recommend water well search and off-site sources that may be contributing to site impacts. No recommendation for additional site work. AGRA is consultant's RP - contact Ann Farris (907-479-7586). |
Former Staff |
| 5/14/1999 |
Update or Other Action |
Contacted AGRA and recommended that they review the onsite water supply and evaluate it since groundwater impacts were detected. (Email to Ann Farris) |
Former Staff |
| 5/14/1999 |
Update or Other Action |
Reviewed the Site Assessment and corresponded with AGRA to inform them (informally) that the site was not high priority, but if the RP was interested in a rapid review and wanted to discuss recommendations, to let me know ASAP. |
Former Staff |
| 2/21/2006 |
Update or Other Action |
File review - 1998 Tank Closure indicates that soil and groundwater were impacted. Soil samples taken from beneath the tank contained up to 76 mg/kg benzene, and 14,000 mg/kg GRO. A groundwater sample from the bottom of the excavation contained 55 mg/L benzene, and 790 mg/L GRO. The site files indicate a drinking water well is developed on the site. |
Kim DeRuyter |
| 2/22/2006 |
Update or Other Action |
PM sent letter requesting a RI and CSM for the site. |
Kim DeRuyter |
| 3/17/2006 |
Update or Other Action |
RP has received responses to their request for proposal and will be selecting a contractor in the near future. They plan to conduct the release investigation this summer. |
Kim DeRuyter |
| 5/19/2006 |
Document, Report, or Work plan Review - other |
Shannon & Wilson RI work plan received. A phased approach is proposed. Phase 1 will involve the installation of one monitoring well and sampling of the onsite well. Phase 2 will involve more monitoring wells and soil borings as required to delineate the extent of the contamination. |
Kim DeRuyter |
| 5/19/2006 |
Release Investigation |
Workplan received and approved with the addition of a well search. |
Kim DeRuyter |
| 6/21/2006 |
Update or Other Action |
The 2006 workplan was ammended to include the use of Geoprobe direct push monitoring well installation. The wells will have a .75 inch inner diameter. Continuous soil monitoring during the soil coring will allow for on-site evaluation of contaminant concentrations. Phase II of the workplan can be implemented immediately based on the results observed during the installation of MW-1. |
Kim DeRuyter |
| 2/22/2007 |
Release Investigation |
ADEC received the UST Release Investigation for the Avis Rent-a-car LUST site. In 1998, a 3,000-gallon gasoline UST was removed and approximately 100 was removed and thermally remediated at OIT. In 2006, Shannon & Wilson installed three soil borings and had them converted into monitoring wells. Two soil samples were collected from each well, one from the groundwater-saturated zone and one from the normal high gw elevation. One of the monitoring wells was installed in the former excavation area and two were installed downgradient, which is next the Wein Lake. The on-site drinking water well did not contain contamination. The water supply well (north corner of the building) provides water for automobile washing. The site relies on bottled water for drinking and a portable outhouse. The groundwater results showed levels in the source area (MW-1) up to 15,300 ppb GRO and 507 ppb benzene. The contaminant levels in MW-3 (adjacent to Wein Lake had GRO up to 36,200 ppb GRO and 5,350 ppb benzene. |
Deborah Williams |
| 3/30/2007 |
Exposure Tracking Model Ranking |
Initial ranking completed. |
Deborah Williams |
| 2/1/2008 |
Update or Other Action |
ADEC sent letter requesting evaluation of vapor intrusion and elevated levels of petroleum hydrocarbons migrating to Wien Lake be addressed. |
Neal Everson |
| 2/25/2009 |
Update or Other Action |
Reviewed work from 2008 field season. Approved recommendations for further work made by S&W. Vapor intrusion will need to be qualitatively/quantitatively assessed before closure. |
Neal Everson |
| 4/6/2010 |
Interim Removal Action Approved |
DEC received from Shannon and Wilson a Corrective Action Plan to excavate suspected contaminated soil near the former tank area. Groundwater plume extent is not completely delineated, nor is the extent of the contaminated soil. Soil borings were installed to estimate the extent of the soil contamination but screening was done with a PID from soil collected from the auger flights (a method not approved by DEC). DEC approved the work plan as an interim corrective action with the understanding that additional characterization may be needed after excavation. |
Tamara Cardona-Marek |
| 9/15/2010 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the Corrective Action Report from Shannon and Wilson. 869 tons of contaminated soil were excavated and treated off-site. Contamination with GRO remains at the edges of the excavation at levels above cleanup level. Highest GRO remains at the base of the excavation (12-13 ft) at 6230 ppm. Highest benzene concentration remaining was at a depth of 4 feet on a sidewall at a concentration of 40.3 ppm. Lead was not found above cleanup levels, MTBE was not sampled. Surrogate recovery for GRO was biased high for some of the samples. Contractor recommends annual monitoring of wells MW-2, MW-3 and MW-7 and replacement of well MW-1 for monitoring. DEC concurred with these recommendations and requested vapor intrusion evaluation. |
Tamara Cardona-Marek |
| 9/15/2010 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77793 3,000-gallon gasoline UST. |
Tamara Cardona-Marek |
| 1/11/2012 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the Shannon and Wilson 2011 Monitoring Well Installation and Groundwater Sampling Results. A monitoring well was installed near the source area. Soil sampling during installation showed benzene levels above the migration to groundwater cleanup levels. The groundwater sample from this well had DRO, GRO, and benzene exceeding cleanup levels. Wells MW-2 and MW-3 could not be sampled. These wells have previously had levels of GRO, benzene and toluene exceeding cleanup levels.
DEC agrees with the recommendation of repairing and/or replacing wells MW-2 and MW-3. DEC also requested that information on groundwater gradient and direction is collected and submitted. |
Tamara Cardona-Marek |
| 5/20/2016 |
Update or Other Action |
Phone request to consultant to call our office with an update on project site. |
Laura Jacobs |
| 6/27/2016 |
Update or Other Action |
Sent compliance letter to RP requesting a work plan and any additional information to update DEC on current conditions at this site with a deadline of July 30, 2016. |
Laura Jacobs |
| 7/6/2016 |
Document, Report, or Work plan Review - other |
7-5-16 received a phone request from consultant (Bethel Environmental Solutions, LLC) for copies of the 2011 Groundwater Monitoring Report and discovered that DEC did not have the last monitoring report from Shannon & Wilson (issued July 29, 2013). An email exchange between Bethel and DEC resulted in up to date files on the site and will be working towards a work plan, with the intent to try to close the site. |
Laura Jacobs |
| 7/28/2016 |
Update or Other Action |
Met with RP's consultant to discuss work plan, sampling schedule, and goals for future work. |
Laura Jacobs |
| 7/29/2016 |
Document, Report, or Work plan Review - other |
Reviewed Draft Work Plan to collect groundwater samples from monitoring wells at the Avis Rent-A-Car location on Old Airport Road and drafted comments. |
Laura Jacobs |
| 8/16/2016 |
Document, Report, or Work plan Review - other |
Reviewed and sent comments on the "Final Work Plan, Groundwater Sampling, Fairbanks, Alaska, August 2016" for Bethel Environmental Solutions. |
Laura Jacobs |
| 2/6/2017 |
Document, Report, or Work plan Review - other |
DEC reviewed the "Memorandum of Results for Semi-Annual Groundwater Monitoring, Alaska Rent-A-Car Airport Location, Fairbanks, Alaska, November 2016", sent by the RP's consultant. This memorandum provided a brief description of the field activities conducted September 23, 2016 and tabulated results from that event. A full report is expected after the sampling event in the spummer of 2017. Wells on the northeast side of the property were not sampled because of well obstructions. Sample results from wells down-gradient of the source area (MW-5, -6, -7, and -8) for all contaminants of concern were "Non-Detect". DEC recommends samples be collected from the wells MW-2, MW-3, and MW-4, or a temporary well to determine if contaminants are migrating off the property. |
Laura Jacobs |
| 5/5/2017 |
Update or Other Action |
DEC received a response from Bethel Engineering, consultant for Avis, regarding our comments on their report memo. |
Laura Jacobs |
| 6/5/2017 |
Document, Report, or Work plan Review - other |
DEC sent approval for work plan proposed and revised by May 5, 2017 response to comments letter sent by L. Maserjian, Bethel Environmental Solutions. |
Laura Jacobs |
| 11/29/2017 |
Update or Other Action |
ADEC staff received a Draft Groundwater Monitoring Report from Bethel Environmental Solutions LLC, L Maserjian. |
Laura Jacobs |
| 12/6/2017 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77793 3,000-gallon gasoline UST. |
Laura Jacobs |
| 6/25/2018 |
Document, Report, or Work plan Review - other |
DEC staff forwarded a finalized version of review comments written in February, 2018. Comments were not sent in February because communication had stopped with RP. New manager has contacted our staff and efforts will be made to finish required work at the site before closure can occur. |
Laura Jacobs |
| 9/10/2018 |
Document, Report, or Work plan Review - other |
The draft work plan for decommissioning monitoring wells on site was approved. |
Laura Jacobs |
| 11/21/2018 |
Document, Report, or Work plan Review - other |
ADEC received the November 2018 Draft Well Decommissioning Report from RP's consultant, Bethel Environmental Solutions LLC. |
Laura Jacobs |
| 12/5/2018 |
Document, Report, or Work plan Review - other |
ADEC reviewed and approved the report "Draft Report, Well Decommissioning, Fairbanks, Alaska, November 2018". All eight groundwater monitoring wells were decommissioned following the ADEC guidance. The well casings were filled with coated bentonite pellets, the well casing and screen were then removed. Bentonite chips were then poured into the hole up to 1 foot below ground surface. The bentonite was hydrated, and the remaining 1 to 2 feet was filled with gravel. |
Laura Jacobs |
| 1/3/2019 |
Cleanup Complete Determination Issued |
ADEC staff issued a final closure letter for site with a Cleanup Complete- Institutional Controls Determination. |
Laura Jacobs |
| 1/4/2019 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Laura Jacobs |
| 1/4/2019 |
Cleanup Complete Determination Issued |
Cleanup Complete with Institutional Controls Determination issued. |
Laura Jacobs |
| 11/30/2022 |
Long Term Monitoring Workplan or Report Review |
Received a Sampling and Analysis plan for exploration at the Avis Car Wash and Maintenance Facility in preparation for business expansion. Soil borings will be taken and tested for GRO, BTEX, and PFAS. Because of the PFAS possibility, this project is combined with the Fairbanks International Airport PFAS groundwater contaminant plume site record found at file 100.38.277. This work plan was reviewed by the DEC staff member that manages the plume site record. The work plan is attached to database record. It was approved by DEC on
11/18/2022.
|
Evonne Reese |
