| Action Date |
Action |
Description |
DEC Staff |
| 3/7/1991 |
Site Added to Database |
|
Former Staff |
| 3/7/1991 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77782 ADD; Gasoline contaminant. |
Former Staff |
| 3/8/1991 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU; :LCAU Date changed DB conversion |
Former Staff |
| 4/23/1991 |
Leaking Underground Storage Tank Corrective Action Underway |
RAPR; QAPP UST Closure Program submitted by DOWL Engineering for (1) 3,000 gallon gasoline UST and (1) 1,000 gallon waste oil UST. |
Former Staff |
| 7/9/1991 |
Underground Storage Tank Site Characterization or Assessment |
SA1R; Reviewed a phase 1 site assessment report. |
Former Staff |
| 10/10/1991 |
Update or Other Action |
REM; DOWL engineers sent in copies of the Uniform Hazardous Waste Mainfest & Transportation Manifests associated with the final drum of material generated as part of the UST closure program at site (Sol-Pro inc. Tacoma, WA). At this time all of the contaminated materials & wastes have been disposed of in an approved manner. |
Former Staff |
| 7/17/1992 |
Update or Other Action |
CORR; Letter requesting Release Investigation and Corrective Action, as was requested in 4/2/91. |
Former Staff |
| 11/20/1997 |
Update or Other Action |
ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: ALASKA SALES & SERVICE INC. |
Former Staff |
| 6/22/1999 |
Update or Other Action |
ADEC coditionally approved release investigation work plan. |
Former Staff |
| 11/7/2000 |
Update or Other Action |
Analysis of 1/24-25/00 soil cuttings to ASR for thermal treatment. |
Former Staff |
| 5/24/2001 |
Release Investigation |
Received March 2000 release Investigation report. Report documented 10 inches of gasoline product on groundwater at 50 feet. |
Robert Weimer |
| 2/1/2002 |
Update or Other Action |
ADEC site project manager transferred from Robert Weimer to Renee Evans. |
Robert Weimer |
| 11/3/2003 |
Update or Other Action |
ADEC Project Manager transferred from Evans to Blessing. |
Todd Blessing |
| 10/11/2004 |
Update or Other Action |
Submitted letter to RP requesting release investigation and corrective action plan. |
Todd Blessing |
| 2/1/2005 |
Update or Other Action |
Submitted cost recovery referral memo to Kay Rawlings recommending proceeding with cost recovery. |
Todd Blessing |
| 3/7/2005 |
Update or Other Action |
Letter received from responsible party on February 28, 2005. Within the letter, responsible party proposes to resample monitoring well MW-1 in order to determine if fuel product is still present. If fuel is found in the well, responsible party proposes to establish a baseline of the level of fuel found and then hand bail the well on a regular basis to remove fuel product and record the amount of fuel removed from the well. The collection and monitoring of fuel product from well MW-1 will allow the responsible party's consultant to initiate a more cost effective release investigation. In addition, the responsible party proposes to conduct an indoor air exposure assessment within the National Car Rental building. Aurora Environmental & Safety will outfit several employees with 3M Organic Vapor Passive Air Monitoring Badges and place the badges in strategic areas throughout the National Car Rental Building. The analysis of the badges will provide evidence as to whether VOC’s are present and at what levels within the building. It is proposed that the detection of VOC’s may initiate further testing to determine if levels of contaminants exceed permissible exposure limits established by Occupational Safety and Health Administration (OSHA).
At this time, the Department approves of the interim corrective action plan as described under the following conditions:
Indoor air collected within the National Car Rental Building will be sampled and analyzed in according with an OSHA, NIOSH or EPA validated method; and
A copy of the indoor air monitoring results, which include method detection limits, will be submitted to the Department. |
Todd Blessing |
| 10/25/2006 |
Update or Other Action |
Issued letter to Mrs. Pfeiffer requesting an update on investigative activities that occurred in 2005. |
Todd Blessing |
| 1/24/2007 |
Update or Other Action |
A letter was issued in December 2006 requesting Alaska Sales and Service hire a third party contractor to submit a site investigation work plan to the Department by May 30, 2006. |
Todd Blessing |
| 3/28/2007 |
Exposure Tracking Model Ranking |
Intitial Ranking Complete for Source Area: 77782 (Autogenerated Action) |
|
| 3/28/2007 |
Exposure Tracking Model Ranking |
Updated Ranking Complete for Source Area: 77782 (Autogenerated Action) |
|
| 5/15/2007 |
Update or Other Action |
Received an email from Diana Pfeiffer requesting extension of deadline to issue a site investigation work plan. Issued a letter to Ms. Pfeiffer, dated May 17, 2007, that established a new deadline (i.e. July 13, 2007) for submittal of a site investigative work plan. |
Todd Blessing |
| 7/3/2007 |
Institutional Control Record Established |
In accordance with 18 AAC 75.350, ADEC has
determined that the unconfined groundwater (above the Bootlegger Cove Formation)
at the Anchorage International Airport (AIA) is not a current or future drinking
water source. This determination is subject to the following conditions:
1. It applies only within the Airside and Commercial RMZ’s, as described in the
Airport-Wide Remediation Management Plan. It does not apply within the Ecological RMZ.
2. It does not establish alternative cleanup levels within those zones but allows
ADEC to use the determination in making decisions in accordance with
18 AAC 75.345(b)(2) - (3). 3. Any drinking water wells located on AIA property must
be properly abandoned in accordance with ADEC decommissioning procedures within two
years of this decision. 4. AIA shall prohibit the installation of any water wells,
used for drinking, cooling, washdown, or any other purposes, on the AIA either
through 17 AAC 42.410 (b) (27) of the airport leasing regulations or in their
individual lease agreement documents. 5. The existing AIA water well used
to maintain the water level in Lake Hood is not considered a drinking water well. However, AIA is responsible for determining its wellhead protection area and ensuring that it maintains levels at or below 18 AAC 75.345 Table C values, unless otherwise approved by ADEC. March 19, 2007 Amendment: DEC has determined that the shallow groundwater along the Lake Hood shoreline is not a current or future drinking water source in accordance with 18 AAC 75.350. Therefore, the March 2001 groundwater use determination is amended to include the shallow groundwater in the Ecological RMZ in that determination. |
Colleen Deal |
| 11/28/2007 |
Update or Other Action |
DEC issued a letter addressed to Diana Pfeiffer notifying her that she failed to meet a deadline (i.e. July 13, 2007) to submit a site investigative work plan. The new deadline for submittal of a site investigative work plan is March 23, 2008. |
Todd Blessing |
| 1/30/2008 |
Update or Other Action |
DEC approved of a request by Restoration Science and Engineering to evaluate the character of the fuel product in monitor well MW-1 as well as resurvey the monitor wells in the general vicinity of the subject site. |
Todd Blessing |
| 2/3/2010 |
Update or Other Action |
DEC staff issued a letter to Diana Pfeiffer requesting she hire a qualified person to conduct a site investigation. Ms. Pfeiffer was also informed of our cost recovery policy. |
Todd Blessing |
| 3/31/2010 |
Update or Other Action |
DEC recently reviewed Diana Pfeiffer's letter dated March 2, 2010, which was received at DEC’s Anchorage Office on March 03, 2010. In her letter, she discussed the hiring of Restoration Science and Engineering (RSE) to evaluate the nature and extent of contamination. She noted that a contractual dispute has precluded RSE from conducting any field work. She also noted that your research into the extent of the AFSC bulk fuel storage tank spill has caused a dilemma for Alaska (AK) Sales and Service since it may be difficult to determine the source of petroleum fuel on AK Sales and Service facility. DEC issued a letter on March 31, 2010 responding to Diana's letter. We informed her that we have reviewed the most recent groundwater and free phase product data for the AFSC Bulk fuel storage tank spill. This data suggests that free phase petroleum fuel is no longer impacting the National Car Rental Facility since free phase product was not observed in monitoring well DM-33 prior to it being decommissioned. The free phase product plume appears to be defined on it’s northern and eastern extents by monitoring well DM-4 and DM-5; respectively. Consequently, at this time, DEC is not requesting that AFSC replace monitoring well DM-33 since it was utilized previously to monitor free product. The groundwater analytical data suggests that the dissolved phase plume does not extend north or east of monitoring well DM-6 since contaminants of concern have not exceeded regulatory criteria. In summary, the most recent groundwater monitoring data suggests that commingling of contaminant plumes on AK Sales and Service Facility is not occurring. DEC again requested that Ms. Pfeiffer issue a site investigation work plan to DEC for our review and approval.
|
Todd Blessing |
| 8/4/2010 |
Site Characterization Workplan Approved |
The CSP reviewed a copy of the BGES, Inc. "Work Plan for Additional Release Investigation Activities, National Car Rental Facility, 4540 West 50th Avenue, Anchorage, Alaska" dated 6/23/10 and received on 8/3/10. The objective of the subject RI is to further characterize the nature and extent of contamination that potentially stems from gasoline releases from a former UST utilized at the subject property to refuel rental cars. This includes evaluating the potential for contamination from an offsite source (the catastrophic failure of a 750,000 gallon fuel tank at the Anchorage Fueling and Service Company (AFSC) Tank Farm Site, reportedly containing jet fuel during the 1964 Good Friday earthquake) to have contributed to the contamination in the area of the former onsite gasoline UST and secondly, to further define the lateral and vertical extents of remaining contamination associated with the gasoline UST. Approved the work plan based on the conditions that: the GW flow gradient and direction are calculated and reported based on measured GW elevations: all soil and GW samples are laboratory analyzed for DRO, GRO, and BTEX; adherence to Appendix F and Notes 3 and 5 of the ADEC "Draft Field Sampling Guidance" dated May 2010 for sampling and duplicate sample(s) are submitted blind for laboratory analysis of GRO, DRO, BTEX, naphthalene, ethylene dibromide, and 1,2-dichloroethane and the frequency based on the guidance; and an updated CSM is submitted with the report of the RI findings. |
Bill Petrik |
| 1/4/2012 |
Document, Report, or Work plan Review - other |
ADEC received the 2010 Site Characterization Report. Two soil borings were advanced onsite and developed into monitoring wells. Ten soil samples plus one duplicate were collected and analyzed from the borings. Wells were developed and two groundwater samples plus a duplicate were collected and analyzed. MW-1 was found to have damaged casing and so a sample was not collected from this well, although measurable free product was encountered. GRO (4,430 mg/kg), benzene (172 mg/kg), ethylbenzene (130 mg/kg), toluene (613 mg/kg), and xylenes (674 mg/kg) exceeded soil cleanup levels at SB-1, 53-55' bgs. Groundwater results found exccedences for cleanup levels of GRO (570 mg/L), benzene (118 mg/L), toluene (122 mg/L), ethylbenzene (8.79 mg/L), xylenes (45.4 mg/L), EDB (0.00015 mg/L) and lead (0.03 mg/L). |
Meghan Dooley |
| 2/23/2012 |
Document, Report, or Work plan Review - other |
ADEC sent a comment letter on the 2010 Site Characterization Report. In the letter ADEC requested further assessment of the nature and extent of contamination in order to resolve data gaps. ADEC also requested a copy of the fuel fingerprinting report and that MW-1 be replaced or repaired. ADEC requested a meeting to discuss the data gaps and path forward for the site. |
Meghan Dooley |
| 5/29/2012 |
Update or Other Action |
ADEC received a letter from Alaska Sales and Service responding to ADEC comments on the 2010 Site Characterization Report and listing other site concerns including monitoring and nearby contamination from adjacent contaminated sites. |
Meghan Dooley |
| 7/17/2013 |
Offsite Soil or Groundwater Disposal Approved |
|
Katrina Chambon |
| 4/30/2014 |
Update or Other Action |
A letter was sent to the RP requesting a meeting to discuss data gaps and requests for work plans. |
Lisa Krebs-Barsis |
| 5/14/2014 |
Meeting or Teleconference Held |
Former project manager met with RP. |
Lisa Krebs-Barsis |
| 7/14/2014 |
Update or Other Action |
Former project manager approved of plan for Alaska Sales and Service staff to conduct product recovery. |
Lisa Krebs-Barsis |
| 10/27/2015 |
Update or Other Action |
Requested work plan for groundwater monitoring and updates on product recovery efforts. |
Lisa Krebs-Barsis |
| 9/27/2016 |
Update or Other Action |
Received free product recovery logs for 2014, 2015 and 2016 to date. Data was collected for MW3 and MW4. Free product is still being recovered from MW3 but is seasonal when the groundwater fluctuates mostly during the Fall season. |
Darren Mulkey |
| 9/28/2016 |
Meeting or Teleconference Held |
Met with RP and their consultant to review historical site data and also review area wide contaminated site activity. Prepared a letter requesting continued free product recovery with the addition of measuring free product thickness prior to free product collection. Also requested a laboratory sample to be collected to establish the composition of the free product. |
Darren Mulkey |
| 10/26/2017 |
Update or Other Action |
DEC staff reviewed product recovery log provided on October 23, 2017. Data has been collected for MW3 and MW4, since 2014. Minimal product has been recovered from MW4 since May of 2015. Free product is still being recovered from MW3 but is seasonal and most of the product recovery for 2017 to date occurred in late July/early August. Data is still pending for the 4th Quarter (October through December). |
Wendy Hansen |
| 2/20/2018 |
Update or Other Action |
Staff reviewed product recovery logs for the 4th Quarter of 2017. Data has been collected for MW3 and MW4, since 2014. Minimal product has been recovered from MW4 since May of 2015. Free product is still being recovered from MW3 but is seasonal and most of the product recovery for 2017 occurred in late July and early August. |
Wendy Hansen |
| 2/20/2018 |
Meeting or Teleconference Held |
Met with RP and their consultant to review historical site data and also review area wide contaminated site activity. |
Wendy Hansen |
| 4/24/2018 |
Workplan Requested |
Issued a letter to the RP to document February 20, 2018 meeting and request a work plan for additional site characterization. The letter also requested that results from product testing be provided to DEC. |
Wendy Hansen |
| 5/10/2018 |
Update or Other Action |
Staff accepted proposal to extend deadlines for product recovery logs and testing results from May 15 to June 30, 2018 and site characterization work plan from June 23 to July 31, 2018. |
Wendy Hansen |
| 7/19/2018 |
Update or Other Action |
Staff extended deadline for site characterization work plan to September 1, 2018 to allow time to review data and meet with RP and consultant to discuss. |
Wendy Hansen |
| 8/13/2018 |
Meeting or Teleconference Held |
DEC staff W. Hansen, J. Wiegers, and R. Weimer met with Alaska Sales & Service and consultant BGES to discuss Site Characterization needs. In conjunction with work plan development, Alaska Sales & Service will work with new lease holder Enterprise Holdings to arrange property access for free product recovery, well repair and water level measurements, and site characterization. |
Wendy Hansen |
| 10/24/2018 |
Workplan Requested |
DEC Staff issued a letter to Alaska Sales and Service (AKS&S) requesting that the work plan due September 1, 2018 be submitted no later than November 30, 2018, as a draft work plan designed to adequately characterize the site. The letter acknowledged that AKS&S is currently working on a property access agreement with the current site operator Enterprise Holdings, and allowed 30 days to finalize the work plan after an access agreement has been signed and DEC comments received. The letter also requested that product recovery be resumed within a week of the signed agreement. |
Wendy Hansen |
| 12/20/2018 |
Document, Report, or Work plan Review - other |
DEC staff reviewed a site characterization work plan, and provided comments. The plan was titled Work Plan for Site Characterization Activities, 4540 West 50th Avenue, Anchorage, Alaska and was dated November 30, 2018. The plan was written by BGES Environmental Consultants, Inc. (BGES) and submitted to the DEC on December 6, 2018. The plan included repair or replacement of MW-1; collecting soil samples in the event MW-1 is replaced (one from the highest PID; one from soil-water interface); At MW-1, MW-3, MW-4 and AFSC well DM-6, collecting water level and free product measurements and re-surveying; and collecting water samples from MW-1, MW-3, and MW-4 where there is no free product. Samples will be analyzed for GRO, DRO, VOCs, PAHs, and lead. The plan also included quarterly free product recovery at MW-1, MW-3, and MW-4. A baildown test has been requested in order to approve of changing product recovery from weekly to quarterly. The work plan did not include details for calculating groundwater flow, completing the delineation of free product and dissolved phase contaminants, or evaluating the vapor intrusion pathway. |
Wendy Hansen |
| 4/19/2019 |
Site Characterization Workplan Approved |
DEC staff approved the site characterization work plan dated April 4, 2019, initially submitted on December 6, 2018 and dated November 30, 2019. DEC comments were adequately addressed. The revised work plan included a baildown test and details for calculating groundwater flow. The plan did not include delineation or evaluation of the vapor intrusion pathway. Further action may be required based on results. |
Wendy Hansen |
| 8/17/2020 |
Update or Other Action |
DEC received notification that the consultant would be onsite on August 18th to develop MW1, check for free product in all wells, and collect another soil sample from the drill cuttings to determine how to dispose of them. |
Janice Wiegers |
| 11/5/2020 |
Offsite Soil or Groundwater Disposal Approved |
Approved disposal of 3 55-gallon drums of soil cuttings generated in February during repair of MW-1. The soil will be taken to ASR. Notified by ASR on 6/23/21 that remediation was complete. |
Janice Wiegers |
| 12/30/2020 |
Offsite Soil or Groundwater Disposal Approved |
Approved transport of 15 cy of contaminated soil to ASR for treatment. The soil contained ethylbenzene and xylenes, and was associated with 4 holes installed around a fueling AST on the south side of the building. PFAS was tested for but was not detected. The holes were advanced to 10 feet with a vac truck. This contamination does not appear to be associated with the National Car Rental site and will be added to the database as a new site. |
Janice Wiegers |
