Skip to content
Back to Top

Site Report: Former Four Corners Country Store

Site Name: Former Four Corners Country Store
Address: Mi. 4.5 Palmer Wasilla Hwy, Palmer, AK 99645
File Number: 2245.26.004
Hazard ID: 22961
Status: Active
Staff: Bill O'Connell, 9072693057
Latitude: 61.599002
Longitude: -149.249237
Horizontal Datum:NAD83

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.


Approximately 200 cubic yards of contaminated soil stockpiled. Groundwater contamination encountered. Site responsible party (RP) is receiving Funding Assistance Program (FAP) funding. Lot 19, Block 1, Winding Brook Subdivision. Class "B" Public Water Supply System (#226339).

Action Information

Action Date Action Description DEC Staff
4/30/1993 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77657 ADD; * Not Assigned
4/30/1993 Site Added to Database * Not Assigned
5/1/1993 Underground Storage Tank Site Characterization or Assessment SA1R; :Action Date changed DB conversion 1/11/11 * Not Assigned
6/1/1993 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU; * Not Assigned
11/19/1993 Update or Other Action CAPR; ADEC assisted in the development of the plan. * Not Assigned
10/6/1994 Update or Other Action CAPR; Additional conditions, including sampling by a qualified person, were disclosed to the RP. * Not Assigned
9/27/1995 Leaking Underground Storage Tank Corrective Action Underway CAPR; Reviewed a Soil Pile Remediation Report and Soil Treatment Plan. Spreading of the soil on the property is approved, provided that the minimum separation distances are maintained. The treatment plan is approved, subject to cell inspection and upgrade requirements, if needed. * Not Assigned
10/9/1995 Leaking Underground Storage Tank Corrective Action Underway LCAR; Reviewed a Corrective Action Progress Report. No further soil cleanup action is needed at this time since there appears to be a de minimus volume of contaminated soil remaining in place. * Not Assigned
12/18/1995 Leaking Underground Storage Tank Corrective Action Underway LCAR; Reviewed and approved a corrective action progress report. * Not Assigned
12/11/1996 Update or Other Action UPD; Reviewed ground water monitoring results and public water supply well test results. Analysis showed that the benzene level was above the allowable 5 ppb level for a public water system. The department has taken certain steps with the lounge owner, Mr. Guy Treat, to ensure that bottled water is used and that the public is informed about the contamination (notices placed in the bathrooms). The actions taken by Mr. Treat satisfy the short term concerns of the department with respect to protecting public health. 18 AAC 78.260 (c) requires that the party responsible for the contamination (Marvin Roofe estate) provide for alternative water supplies and treatment. Three separate vendors have been identfied by the RP for installing a treatment unit capable of treating VOCs, such as benezene. Plans need to be submitted under the seal of an Alaska registered engineer. In addition, the RP needs to obtain Mr. Treat's written concurrence on the plan submittal in order for the department * Not Assigned
12/11/1996 Leaking Underground Storage Tank Corrective Action Underway CAPA; Reviewed and approved a Project Closure Sampling Plan for obtaining 5 samples for analysis after field screening the soil being treated in cells. Submit a plan amendment to include monitor parameters and wells to be used for evaluation as to whether passive treatment is occurring or whether ground water trestment may be warranted. The plan needs to be submitted for review and approval prior to the next scheduled sampling event for monitor well #3. * Not Assigned
12/31/1996 Update or Other Action UPD; Reviewed and conditionaly approved plans for a proposed public water supply treatment system. * Not Assigned
7/1/1997 Update or Other Action Dept reviewed and approved plans for a new DW well. * Not Assigned
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: M. D. ROOFE * Not Assigned
12/2/1997 Update or Other Action Consultant reported to the Dept that sampling of the new well revealed benzene contamination of 0.032 mg/l * Not Assigned
12/4/1997 Update or Other Action Dept advised consultant and RP of need to meet to discuss problems at this site and workplan for resampling. * Not Assigned
4/3/1998 Update or Other Action Dept advised consultant that workplan for resampling, submitted on Mar 13, would not be reviewed, as RP had selected another consultant to proceed with this work. * Not Assigned
4/17/1998 Update or Other Action Dept received letter from new consultant, reporting results of new well, repeat sampling, showing benzene levels to be higher--0.0663 mg/l. Consultant advised Dept that they are preparing a workplan and a cost proposal , as requested, for a comprehensive monitoring event. * Not Assigned
11/19/1999 Update or Other Action Results of sampling by Gilfilian Engineering confirms GW at 2.4 ppb or slightly less than half of the MCL of 5ppb. Drinking Water contamination levels have been below the MCL for over a year. Department has ceased providing alternative water & Ice. * Not Assigned
12/10/1999 Update or Other Action Notified RP and Bar Owner that drinking water has been below MCLs for over a year. State will no longer provide bottled water and Ice. * Not Assigned
5/12/2000 Release Investigation Continuing RI on Lot 2 DW well. Will install MW approx. 75 feet West of MW5. Continue GW monitoring on select MWs. * Not Assigned
12/15/2000 Leaking Underground Storage Tank Corrective Action Underway Re'c new CAP Mike Mooney
1/8/2001 Leaking Underground Storage Tank Corrective Action Underway Approved CAP. FAP budget review in process. Mike Mooney
2/23/2001 Leaking Underground Storage Tank Corrective Action Underway After Budget review 2nd work plan submitted Mike Mooney
4/6/2001 Leaking Underground Storage Tank Corrective Action Underway Corrective Action Plan approved. FAP grant approved. Work to begin June 2001. Mike Mooney
9/13/2001 Long Term Monitoring Established RI and monitoring event report received 8/29/01. Soil from borings CB-1, CB-2, and CB-4 exceed benzene SCLs. Benzene in groundwater from MW-3, MW-6, and MW15 exceeded SCLs. GRO was exceeded in MW- 6 and MW-15. DRO was exceeded in MW-15. Sharon Sadlon
12/14/2001 Update or Other Action Response to ADEC letter Nov 28 Sharon Sadlon
1/7/2002 Leaking Underground Storage Tank Corrective Action Underway CAP proposed: EZT-BST biosurfactant and micronutrient with gw circulation wells proposed in addition to monitoring- after discussion consultant decided that air sparging would be more cost effective due to injection well permit that would likely be required if extracted GW was reinjected into ground Sharon Sadlon
1/30/2002 Leaking Underground Storage Tank Corrective Action Underway Revised CAP air sparging/SVE/Enzyme technologies bacterial, enzyme, & nutrient consortium blend- Discussion with consultant to only do active remediation in most contaminated area, since I didn't think we could get grant $ for the full amount of the proposal. Sharon Sadlon
4/10/2002 Leaking Underground Storage Tank Corrective Action Underway Approved Task I groundwater monitoring. Sharon Sadlon
5/10/2002 Leaking Underground Storage Tank Corrective Action Underway Revision to Tasks II- IV approved. ORC pilot test, O&M of pilot test, and project management. Sharon Sadlon
11/27/2002 Update or Other Action Action added 12-28-09: on 11/27/02 and 1/15/03 attempts were made to contact Guy Treat 746-5006 and Manglona's 745-2671 to let them know about sampling. Pam Clemens
1/10/2003 Update or Other Action Action added 12-28-09: On 1/10/2003 attempted phone contact with Ron Sopko, the representative for Mary Lou Roffe, Trustee for the Marvin D. Roofe Revocable Trust for a status update on the Four Corners site. Phone number listed is: 761-6046, there is also an email address of: RLS@NHTIUSA.COM Pam Clemens
2/4/2003 Meeting or Teleconference Held Action added 12-28-09. On 2-4-03: Meeting with Bob Gilfilian; Kris Ivarson (MWH); Ron Sopko, the representative for Mary Lou Roofe; ADEC staff: Todd Blessing and Robert Weimer to discuss options. Items discussed were: the February 17, 2003 ore injection for pilot study; the last monitoring that was done in December of 2002; resampling all non-detects in DWW (drinking water wells); and Montogomery, Watson, Harza (MWH)submittal of a plan for three options based on the pilot study. The three options discussed were: A) DRC, full; B) SVE, AS and C) Excavation. Pam Clemens
10/14/2003 Update or Other Action Site Transferred from Weimer to Blessing Todd Blessing
3/3/2004 Leaking Underground Storage Tank Corrective Action Underway Corrective Action Plan approved in January 2004 to install Air Stripper Circulation Remedition system coupled to Vapor Extraction Todd Blessing
5/19/2004 Report or Workplan Review - Other Reviewed April 2004 Remediation System Installation, Pilot testing, and Baseline Monitoring Report. MWH requesting the installation of infiltration gallery. Will contact EPA UIC program in order to determine whether this is acceptable. Todd Blessing
6/29/2004 Update or Other Action Inspected site with Thor Cutler of EPA's UIC program. Remediation system installed; however, it is still not running. Todd Blessing
7/21/2004 Update or Other Action Received ASR report on soil cuttings and contaminated soil generated during the remediation system installation. Treated soil meets Department standards. Todd Blessing
9/19/2004 Update or Other Action Conditionally approved of September 17, 2004 Work Plan for groundwater monitoring and remediation system maintainance and monitoring in 2004 and 2005. Conditions of approval included: using ADEC certified labs for groundwater analysis and notifying ADEC if drinking water well data exceeds maximum contaminant levels. Todd Blessing
10/11/2004 Update or Other Action Approved disposal of drill cutting generated during installation of remediation system. Todd Blessing
5/13/2005 Update or Other Action Approved of MWH proposal to conduct a full groundwater monitoring event two weeks following the startup of the remediation system. The remediation system is slated to be started around May 13, 2005 while monitoring would occur approximately the first week of June. Groundwater monitoring wells scheduled to be sampled include: MW-3, MW-6, MW-7, MW-12, MW-15, and MW-16 (in the treatment zone). Groundwater samples collected will be analyzed for GRO/BTEX by AK101/8021B, DRO by AK102, dissolved oxygen, ferrous iron, ORP, pH, and temperature. In addition, drinking water samples will be collected from Lot 1, Lot 19, and Lot 20 and analyzed for VOCs by 524.2. An air sample will also be collected from the soil vapor extraction system and analyzed for BTEX by 8020/8015M. Todd Blessing
6/20/2005 Update or Other Action Reviewed and approved a groundwater monitoring amendment for Four Corners Lodge in Wasilla Alaska. MWH proposed to conduct ground water monitoring in 2005 at the end of the summer instead of two weeks after groundwater remediation system startup. The groundwater remediation system being utilized on-site treats groundwater by air stripping and then re-injects treated groundwater upgradient of the contaminant plume. Allowing the remediation system to run for over two months before sampling groundwater will provide a more accurate assessment of the remediation system effects on groundwater quality. Todd Blessing
12/21/2005 Update or Other Action Submitted letter to Mrs. Roofe requesting groundwater monitoring results. To date, the Department has not received any reports that could shed light on whether the remediation system is reducing the level of contaminants in groundwater. The Department is aware that a groundwater monitoring event was completed over two months ago. At this time, the Department requested that Mrs. Roofe submit a groundwater monitoring report to the Department by December 30, 2005. In addition, requested that Mrs. Roofe submit a long term remediation system and monitoring work plan to the Department by February 10, 2006. Update: extended deadline for groundwater monitoring results to January 20, 2006. Todd Blessing
7/18/2006 Update or Other Action Discussed site with George Lyle. Gary Miller is presently leasing the site with the option to buy. He is not accepting future contamination liability. Todd Blessing
9/8/2006 Update or Other Action Discussed site with Debra Killian. Ms. Killian is concerned that there is contaminated water migrating from the property into Wasilla Creek and/or her property. Informed Ms. Killian that the Department will inspect site and get back to her. The Department evaluated conditions and discovered that the remediation system is not presently operating. Informed Ms. Killian's that she should sample her tap water and report the results to the Department if she believes that this site is impacting her drinking water well. Todd Blessing
2/23/2007 Update or Other Action Issued letter to Ms. Roofe requesting 2005 groundwater monitoring results. The deadline for submission of monitor report is March 30, 2007. Also requested submission of long term monitoring plan by June 29, 2007. Todd Blessing
2/23/2007 Exposure Tracking Model Ranking Initial ranking Todd Blessing
11/1/2007 Update or Other Action DEC staff reviewed the September 2005 Monitoring Report. The report was prepared by MWH and dated October 2007. This report discussed the collection and analyses of groundwater samples from monitor wells MW-3, MW-6, MW-12, MW-15, and MW-16 and drinking water wells on Lots 1 and 20. In addition, the testing and analysis of soil vapor extraction (SVE) system exhaust gas was also discussed. The levels of GRO and/or benzene measured in groundwater samples collected from monitor wells MW-6, MW-15, and MW-16 exceeded cleanup values. No contaminants of concern were detected at levels that exceed DEC cleanup values in water samples collected from the drinking water wells. In general, the levels of contaminants of concern in groundwater have declined from 1998 to 2005. The decrease in dissolved contaminant levels from February 2003 to February 2005 was significant and suggests that the remediation system, when turned on, was effectively reducing contaminant concentrations as designed. The remediation system does not appear to be operating presently, and therefore, a rebound in groundwater contaminant concentrations may occur. A letter was issued to Ms. Roofe on November 1, 2007 requesting that she hire a qualified third party consultant to develop a long term remediation system and groundwater monitoring work plan. Todd Blessing
5/29/2008 Update or Other Action DEC staff recently reviewed the administrative record for the subject site. On February 26, 2007, CSP issued a letter to Ms. Roofe requesting that she hire a qualified third party to develop a long term monitoring plan. To date, CSP has not received a response; therefore, a letter was issued on May 29, 2008 requesting, a second time, a long term monitoring plan for DEC review and approval. The deadline for submittal of this plan is June 30, 2008. Todd Blessing
3/31/2009 Update or Other Action DEC staff has reviewed and conditionally approved Travis/Peterson Environmental Consulting, Inc.’s “Four Corners Country Store Groundwater Treatment Work Plan”, dated February 23, 2009. Within the subject work plan, Travis/Peterson Environmental Consulting, Inc. (TPECI) proposed to do the following: • Sample groundwater monitoring wells MW-3 and MW-16 and test the groundwater samples for GRO and BTEX; • Based on initial sampling results, reactivate the VSC system; and • Conduct an additional sampling event in August and November, 2009 to assess current groundwater concentrations DEC approves of TPECI’s February 23, 2009 work plan with the following modifications: • During the August and November 2009 sampling events, TPECI will evaluate and report the groundwater elevations of all on-site wells, and collect groundwater samples to be tested for contaminants of concern from MW-15 and MW-6 as well as MW-3 and MW-16. • TPECI will certify the quality of the analytical data by completing the CSP’s data review checklist; and • TPECI will deliver a final report to CSP within 60 days following completion of field work Todd Blessing
11/15/2010 Update or Other Action DEC staff contacted Mike Travis to discuss his efforts to monitor groundwater and start up the remediation system. Mike informed DEC that he was told to leave the property from an individual that claimed to be the current owner of the facility. Todd Blessing
12/20/2010 Potentially Responsible Party/State Interest Letter DEC issued a letter to Debra Killian informing her as the owner of the facility of her potential responsible party status. DEC requested she respond to the letter by December 31, 2010. Todd Blessing
5/24/2011 Update or Other Action DEC staff dicussed the status of this site with Debra Killan - current owner of the facility. Ms. Killan was notified that she must hire a qualified third party to monitor groundwater contamination on the subject site. Todd Blessing
6/1/2011 Update or Other Action DEC staff issued a letter to Debra Killian requesting she issue a groundwater monitoring plan to the Department by July 15, 2011. Ms. Killian was also informed that DEC will not cost recover on sites that recieved DEC grant funds as long as the responsible party acts in good faith to DEC's requests for site investigation or cleanup. Todd Blessing
6/12/2012 Update or Other Action DEC staff recived a copied letter addressed to Debra Killian from the Attorney Genearl's Office. The letter requested that Ms. Killian pay a total of $2,412.96 for ADEC overight expenses. Todd Blessing
1/15/2014 Update or Other Action ADEC sent a letter to the responsible party, M.D. Roofe Trust, requesting a work plan be submitted to sample groundwater and drinking water wells and inspect the condition of the Vapor Extraction System. Meghan Dooley
3/7/2014 Update or Other Action ADEC spoke with Mary Lou Roofe to follow up on the January 15 letter. ADEC discussed the path forward with Ms. Roofe. Meghan Dooley
3/20/2015 Site Visit Visited the site and met with the landowner and the consultant. The consultant was on site to locate the existing wells and conduct sampling per approved modifications to the 2009 work plan. The shed containing the remediation system is gone but the vapor extraction wells are still intact. A number of monitoring wells in the parking area no longer have well caps, the casings are flush with the ground, and filled in with gravel. Lisa Krebs-Barsis
6/25/2015 Update or Other Action Corresponded with EPA regarding the closure of the Class V injection well. The ORC wells were permitted as a Class V injection well. The EPA did not object to the decommissioning plan and the Pre-Closure Notification of EPA UIC ID AK170P5-99-12369. Lisa Krebs-Barsis
6/26/2015 Site Characterization Report Approved Conditionally approved groundwater monitoring report and well decommissioning work plan. Lisa Krebs-Barsis
9/2/2015 Update or Other Action Decommissioning of located monitoring wells completed. The wells decommissioned were MW3, MW4, MW5, MW6, MW8, MW12, MW14, MW15, MW16, nine ORC wells, VSC-1, VSC-2, VSC-3, VSC-4. Several wells could not be located and were presumed to have been destroyed or buried. Lisa Krebs-Barsis
10/21/2015 Site Characterization Report Approved Wells MW3, VSC-1, MW15, MW6, and the drinking water well on Lot 20 were sampled for gasoline range organics and benzene, toluene, ethylbenzene, and total xylenes. Passive diffusion bags were used for each of the wells. In addition to the PDB samples, one sample was collected from MW15 using a low flow purge method. Except for MW15, all analytes were either not detected or were detected below cleanup levels. Benzene was detected in MW15 at 5.09 micrograms/L (using the PDB) and 9.43 micrograms/L (using a low flow purge method). Both the results from the low flow purge method and the PDB results were significantly decreased from the previous samples collected in 2005. Lisa Krebs-Barsis
2/8/2016 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77657 Gasoline . Lisa Krebs-Barsis
2/18/2016 Update or Other Action A Notice of Environmental Contamination was filed for Lots 19 and 20. The NEC prohibits installation of new drinking water wells without coordination with the contaminated sites program. The NEC documents are attached. Lisa Krebs-Barsis
2/18/2016 Cleanup Complete Determination Issued DEC has determined that the site has been adequately characterized and further cleanup action is not required, subject to institutional controls. Lisa Krebs-Barsis
2/18/2016 Institutional Control Record Established Institutional Controls established and entered into the database. Lisa Krebs-Barsis
3/18/2016 Site Reopened The affected property owner does not agree to the placement of institutional controls on the two affected properties, Lots 19 and 20, Block 1, Winding Brook Subdivision. The site will be reopened so that additional data may be collected to evaluate contaminant concentrations in groundwater on the affected properties. Notices of Environmental Contamination will remain on both properties. Bill O'Connell
7/8/2016 Report or Workplan Review - Other Work plan approved for the installation and sampling of a single groundwater monitoring well in the vicinity of former well MW-15. The objective of well installation and sampling is to evaluate the migration of contaminated groundwater from Lot 19 to lot 20. Bill O'Connell
1/2/2018 Update or Other Action Letter sent to responsible party requesting update on site activities Bill O'Connell
6/25/2018 Report or Workplan Review - Other Reviewed Well MW-15R Monitoring Report and Site Closure Recommendations for the former Four Corners Country Store. A sample was collected using a passive diffusion bag in May 2018. The sample contained benzene at 5.28 ug/l, above the cleanup level of 4.6 ug/l. Bill O'Connell
8/14/2018 Update or Other Action Based on a review of the available data and at the request of the responsible party, future samples from well MW-15r will be analyzed for BTEX only via method AK 101/8021 and duplicate samples will not be required. Bill O'Connell
9/10/2018 Report or Workplan Review - Other Reviewed sampling report for Four Corners. Well MW-15r contained benzene at 6.89 ug/l. A sample from the domestic well on Lot 20 did not contain detectable concentrations of contaminants. Bill O'Connell
12/24/2018 Report or Workplan Review - Other MW-15R sampled in early December 2018. Contaminants were not detected above cleanup levels. Bill O'Connell

Contaminant Information

Name Level Description Media Comments
Benzene > Table C Groundwater In 2015 a well on Lot 19 had contaminants above cleanup levels. The plume, however, had greatly diminished and concentrations had decreased.
GRO < Table C Groundwater

Control Type

Type Details


Description Details
Advance approval required to transport soil or groundwater off-site.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.
Continue     Close