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Site Report: Kasilof Riverview Lodge

Site Name: Kasilof Riverview Lodge
Address: 57440 Sterling Highway, Mi. 109.5 Sterling Hwy., Kasilof, AK 99610
File Number: 2319.26.002
Hazard ID: 22950
Status: Active
Staff: Peter Campbell, 9072623412 peter.campbell@alaska.gov
Latitude: 60.318200
Longitude: -151.261700
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.

Problems/Comments

One of the 6,000-gallon gasoline underground storage tanks (USTs) (DEC Tank ID #2) failed the tank tightness test performed in 1993 and 1994. During the Phase I Release Investigation, gasoline range organics (GRO) concentrations were up to 2,440 parts per million (ppm), Benzene up to 32.8 ppm, and benzene, toluene, ethylbenzene, and xylenes (BTEX) was up to 587.0 ppm. On October 15-20, 1998, in-place upgrades were performed on one 2,000-gallon diesel (DEC Tank ID #3), and two 6,000-gallon unleaded gasoline tanks (DEC Tank IDs #1 & #2). One 1,000-gallon heating oil UST (DEC Tank ID #5) was removed and one 2,000-gallon gasoline UST (DEC Tank ID#4) was abandoned in-place and a new 3,000-gallon UST (DEC Tank ID #6) installed. During the upgrades, 125 cubic yards of soil was stockpiled on site. Gasoline range organics concentrations up to 2,400 ppm, diesel range organics (DRO) concentrations up to 264 ppm, and Benzene concentrations up to 58.5 ppm. Soil vapor extraction system installed and monitoring wells. Updated 1/30/2006.

Action Information

Action Date Action Description DEC Staff
6/3/1993 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77641 6,000 gallon regular gasoline tank failed tank tightness testing. Fuel line tested tight. Testing conducted on 16 May 93. Former Staff
6/3/1993 Site Added to Database Former Staff
8/11/1993 Update or Other Action NOR; A Notice of Release was sent by Paul Horwath after the tank tightness test was conducted on May 16, 1993. Paul Horwath
10/21/1993 Update or Other Action COMR; Reviewed complaint and established a case file. Referred RP's complaints and concerns to UST program in SCRO. Former Staff
10/21/1993 Site Visit COMI; Referred RP's complaints and concerns to UST program in SCRO. Former Staff
9/15/1994 Update or Other Action Letter sent detailing infromation that needs to be included in the response to the Warning Letter sent on 9 September 94. This is in response to a phone call with Mrs. Joanne Browning. Donald Seagren
11/30/1994 Update or Other Action COBC sent to Mrs. Browining to resolve tank registration fees, late fees and TTT reimbursement. Donald Seagren
12/30/1994 Release Investigation TTT done on 20 December 94. Unleaded gasoline tank #6000 West failed TTT. This is the same tank that failed the TTT on 3 June 93. Donald Seagren
4/5/1995 Update or Other Action UPD; Changed COM action code to COMR action code. Added COMI action code after reviewing COM status field. Former Staff
7/6/1995 Update or Other Action Tank registration fees and late fees paid in full per conditions of COBC. Donald Seagren
7/12/1995 Update or Other Action Application for financial assistance received. They plan to remove all tanks, stop using failed tank immediately and replace and upgrade UST system. Donald Seagren
2/2/1996 Update or Other Action Notification of Taken Out Of Service UST filed for Tank #1 (6,000 gallon gasoline tank) taken out of service on 30 December 94. Donald Seagren
6/24/1997 Update or Other Action Financial assistance grant of $20755.89 offered to Brownings for UST removal, closure site assessement and lab testing. Grant # Donald Seagren
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: KASILOF RIVERVIEW LODGE Former Staff
1/26/1998 Update or Other Action A grant of $39,244.11 for installation of one 16,000 gallon UST system offered. Grant # 15038441 Donald Seagren
4/10/1998 Update or Other Action Second Notice of Release letter sent by Paul Horwath requiring release investigation be initiated no later than 1 May 98. A release investigation report required no later than 5 June 98. Paul Horwath
4/15/1998 Release Investigation 13 April 98 Release Investigation Workplan submitted by Gilfilian Engineering approved by Paul Horwath. Paul Horwath
4/20/1998 Update or Other Action Letters from DW program and UST Grants program related to separation distances from UST's and contamination to Public Water System well # 243666. Donald Seagren
5/18/1998 Release Investigation Phase I Release Investigation Report. Soil at 11.5' - 12' shows exceedances for GRO & Benzene above Method 2 clenaup levels. Donald Seagren
6/8/1998 Update or Other Action Conditional Approval of Request for Separation Distance Waivers by Drinking Water Program. UST upgrades and site cleanup must be completed for this waiver to be valid. Donald Seagren
7/21/1998 Leaking Underground Storage Tank Corrective Action Underway Paul Horwath sent a letter identifying the regulatory corrective action work requirements related to the UST systems and for the Corrective Action Plan required to be submitted by 23 August 98. Paul Horwath
9/22/1998 Update or Other Action Letter requiring GW monitor wells to be installed and sampled. Additionally environmental assessment required under all tanks and piping, not just the tank that failed the TTT. Donald Seagren
10/16/1998 Update or Other Action 15 day notification of closure of one 2000 gallon UST approved. Donald Seagren
12/3/1998 Update or Other Action Tank Upgrade Grant No. 15038442 in the amount of $39,244.11 offered. Donald Seagren
5/14/1999 Underground Storage Tank Site Characterization or Assessment UST System Upgrade Site Assessment report by Gilfilian Engineering submitted. No GW encountered, noer was flow direction determined. Approx 500 yds3 GRO, DRO, BTEX contaminated soil still insitu. Approx. 125 yds3 contaminated soil stockpiled. Donald Seagren
7/21/1999 Update or Other Action Paul Horwath sent a letter requesting a Corrective Action Plan after reviewing the UST System upgrade site Assessment from Gilfilian Engineering, dated May 12, 1999. Paul Horwath
10/11/1999 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Former Staff
12/28/1999 Leaking Underground Storage Tank Corrective Action Underway Paul Horwath sent an approval letter after reviewing the Corrective Action Plan from Gilfilian Engineering dated September 7, 1999. Paul Horwath
2/27/2002 Update or Other Action Telephone conversation with Kris Ivarson, Gildfilian Engineering, 23 September 99 CAP never implemented due to non-payment of bills. Donald Seagren
3/1/2002 Update or Other Action Sent letter requesting project status update, report on CAP and current status of stockpiled contaminated soil. Never received a response. Donald Seagren
3/6/2003 Update or Other Action Reviewed file and sent letter updating cleanup standards, based on revised regs. Also requested copy of CAP report within 30 days of receipt of letter. Donald Seagren
4/15/2003 Update or Other Action Don Seagren sent a 2nd letter requesting a Corrective Action Report. Alyce Hughey
4/21/2003 Leaking Underground Storage Tank Corrective Action Underway ACEE - Arne Tikka new consultant. Approved change of location for MW's. Work to be done starting 24 April 03. Donald Seagren
1/6/2004 Document, Report, or Work plan Review - other Don Seagren sent a review comments letter after reviewing the Corrective Action Report from A.C.E. Engineering dated December 2003. Donald Seagren
9/7/2004 Update or Other Action File number assigned and entered into the Fileroom DB and LUST DB. Alyce Hughey
9/13/2004 Update or Other Action Discussed project status with consultant. Water quality sampling and water level measurements have been on-going. Reports need to be written. He will get with the owner to try to develop a plan for the soil stockpile prior to freezeup this year. Donald Seagren
1/24/2005 Update or Other Action Sent letter notifying owner of end of grant program, establishment of loan program and limited libility for cost recovery as long as progress is being made towards site cleaup. Donald Seagren
6/13/2005 Update or Other Action Don Seagren sent an approval letter to spread, till, and aerate the approximately 200 cubic yards of stockpiled soil on site after reviewing the Monitor Well Sampling, Groundwater Flow, and Stockpile Remediation Plan from Alaska Consulting and Environmental Engineering, dated June 3, 2005. Donald Seagren
1/30/2006 Update or Other Action Using Figures 1 and 2 from a Phase I Release Investigation Report, from Gilfilian Engineering, dated May 15, 1998, in conjunction with TopoZone Pro and the KPB Parcel Lookup, entered the coordinates for this site. Metadata includes No Topo Basemap, TopoZone Pro Street Maps, Black and White Aerial Photo, on a Medium Size Map, View Scale 1:10,000, Coordinate Datum NAD83. High degree of confidence in accuracy of location. Alyce Hughey
2/15/2007 Exposure Tracking Model Ranking Intitial Ranking Complete for Source Area: 77641 (Autogenerated Action)
6/13/2008 Update or Other Action Site transferred from Don Seagren to Paul Horwath per Linda Nuechterlein. Alyce Hughey
2/12/2009 Update or Other Action Need to check with RP to determine if any additional soil treatment or groundwater sampling has been performed at this site since June 13, 2005. Paul Horwath
11/6/2014 Update or Other Action Sent a letter to Joanne Browning, identifying the current status of this site, and the work tasks required in order for ADEC to be able to consider issuing a site closure determination. Paul Horwath
5/31/2016 Update or Other Action ADEC confirmed over the weekend that the approximately 200 cubic yard stockpile of contaminated soil is no longer present at its prior location on this property. ADEC has received no communication with the owner/operator since issuing its November 6, 2014 letter. ADEC has no information as to where the soil stockpile has been moved to. Paul Horwath
6/29/2016 Update or Other Action Issued a letter to Joanne Browning, requiring that a written response be provided to ADEC by July 14, 2016, accounting for the missing contaminated soil stockpile. The letter also required that a corrective action plan be prepared, signed by a qualified environmental professional, and provided to ADEC by no later than July 28, 2016, in order to assess the soils for residual petroleum contamination, and to locate and resample the remaining groundwater monitoring wells at this site. Paul Horwath
6/29/2016 Site Visit Inspect and photograph former soil stockpile location and groundwater monitoring wells. Paul Horwath
1/9/2017 Update or Other Action ADEC received a report from Alaska Consulting and Environmental Engineering, dated 1/5/2017, Subject: Final Stockpile Soil Spread and Former Stockpile Location Soil Sampling, Monitoring Well Sampling, Report of Environmental Investigation and Analytical Results. Paul Horwath
6/23/2017 Document, Report, or Work plan Review - other ADEC reviewed the January 5, 2017 Final Stockpile Soil Spread Former Stockpile Location Soil Sampling, Monitoring Well Sampling report, prepared by Alaska Consulting and Environmental Engineering, received by ADEC on January 9, 2017. Soil sampling was conducted on the historical 300-400 cubic yard soil stockpile. The five stockpile soil samples met ADEC's Method 2, migration to groundwater soil cleanup levels for all contaminants of concern. One composite soil sample was collected from the former soil stockpile location, and also me ADEC's most stringent Method 2, migration to groundwater soil cleanup levels. Three groundwater monitoring wells were located and sampled. MWs 2 & 3 met all ADEC GW cleanup levels. MW-1 contained 53.6 ug/L benzene, exceeding the current ADEC GW cleanup level of 4.6 ug/L for benzene. The excavated soil stockpile now meets ADEC soil cleanup levels and no further work is required on those excavated and land spread soils. The concentration of benzene in MW-1 was more than 20 times higher than when last sampled in 2005. Additional fuel releases may be responsible, however MW-1 must be resampled to confirm the large increased benzene concentration. All sampling was performed in October 2016, before the Chapter 75 soil and groundwater cleanup levels were modified on November 6, 2016. The next analysis must include EPA test method 8260C. No further testing for GRO or DRO is necessary in MW-1 at this time. Groundwater gradient was determined to be easterly, toward the Sterling Highway. Paul Horwath
8/3/2017 Update or Other Action Issued a letter to the land/business owner (responsible party), requiring a corrective action plan to entail the re-sampling of groundwater monitoring well MW-1, and the collection of GW elevations/direction across on the three MWs remaining on the property. Paul Horwath
1/24/2018 Update or Other Action The qualified environmental consultant that was knowledgeable and working for the landowner, Mr. Arne Tikka, passed away in late 2017. No response or reply has been received since ADEC's August 3, 2017 was issued to the owner, Mr. Joe Browning. Paul Horwath
2/16/2018 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77641 usts. Paul Horwath
2/21/2018 Workplan Requested Certified letter issued to Mr. Joe Browning, requiring a corrective action plan be submitted to ADEC by no later than April 30, 2018. Paul Horwath
3/21/2018 Update or Other Action Talked with Joe Browning today, and was informed that Eric Henry has been contacted and intends to complete the GW sampling and analysis work. Was informed that Joe expected Eric to contact me to discuss the scope of work. Paul Horwath
7/24/2018 Document, Report, or Work plan Review - other ADEC issued conditional approval of the May 23, 2018 groundwater sampling and analysis work plan which was prepared and provided by Eric Henry (EHX), on behalf of Mr. Joe Browning. Paul Horwath
8/15/2018 Update or Other Action Telecom with consultant Eric Henry. Mr. Henry expects to sample GW MWs in the first half of September. Paul Horwath
5/22/2019 Document, Report, or Work plan Review - other Reviewed EHX's 2018 groundwater sampling and analysis report and issued an ADEC response letter containing ADEC's report review comments. The letter also included the requirement for another groundwater sampling and analysis event to be performed on monitoring well MW-1, only. Paul Horwath
5/23/2019 Workplan Requested ADEC requested another sampling of MW-1. A work plan is required to be approved by ADEC prior to this re-sampling event. Paul Horwath
6/7/2019 Document, Report, or Work plan Review - other Approved a work plan for groundwater sample collection and analysis from MW-1. Paul Horwath
5/5/2020 Potentially Responsible Party/State Interest Letter Cost Recovery letter sent by Hall Peter Campbell
5/5/2020 Workplan Requested Workplan request sent by Hall. Peter Campbell
9/11/2020 Update or Other Action Soil transport approval signed to move 180 CY gasoline impacted stockpile and 20 CY DRO impacted stockpile to Anchorage Sand & Gravel for thermal remediation. Peter Campbell
12/9/2020 Potentially Responsible Party/State Interest Letter Resend letter with corrected address. Peter Campbell
4/26/2021 Document, Report, or Work plan Review - other Release Investigation Work Plan - ADEC Conditional Approval for the installation of an additional monitoring well. Peter Campbell
8/5/2021 Document, Report, or Work plan Review - other Review the July 2021 Release Investigation report which covered the installation of MW-4. The new well installed near the Kasilof river was clean, as were the other three monitoring wells. Soils removed the the ground during the tank closure as well as soil analytical results from soils remain in place at the fuel island, gasoline tanks site and diesel fuel tank site exceed the migration to groundwater cleanup levels. ADEC is requiring a corrective action work plan be submitted to our office by September 22, 2021. Peter Campbell
8/5/2021 Meeting or Teleconference Held Called Joe Browning (owner) to discuss the our request for a corrective action work plan. Peter Campbell
9/10/2021 Meeting or Teleconference Held Met with Mr. Browning and consultant to discuss a path forward in a release investigation. Consultant will prepare a investigation work plan that will include at least one new monitoring well on the south side of the fuel island to help understand the dynamics of the site. The soils appear to be silty with calculated groundwater flow in a counterintuitive direction, to the northeast, away from the river and toward a topographic high. Calculated flow is also away from MW-1, which had previously ben impacted by hydrocarbons. Peter Campbell
6/3/2022 Meeting or Teleconference Held Meeting with consultant and site owner to discuss drilling investigation and remediation options. Peter Campbell
9/16/2022 Document, Report, or Work plan Review - other Review 2021 Annual Report. Xylene concentrations in WP-1 have been decreasing significantly over time. Xylene concentrations within the slurry wall are at reasonable levels, with a couple of elevated groundwater results (TW-21). Peter Campbell
9/16/2022 Site Characterization Workplan Approved Review and approve the work plan for the installation of one additional monitoring well west of the former tank location. Peter Campbell
4/7/2023 Meeting or Teleconference Held Call with Mr. Browning to discuss site issues and concerns prior to sending out a letter requiring further action at the site. The primary concerns are soil concentrations in the former tank area that exceed maximum allowable concentrations, increasing concentrations in MW-1 over time and concentrations in the new well MW-5 that exceed cleanup levels. The drinking water supply well had a detection of toluene (below cleanup levels) that will be tracked over time to determine trends. Peter Campbell
4/13/2023 Site Characterization Report Approved Review Additional Release Investigation Report and comment on groundwater contamination encountered in a new well, MW-5, and an existing well, MW-1. Groundwater flow apparently diverges from the tank area toward the east northeast and to the south. Contaminant transport by groundwater appears to be the south and toward the Kasilof River. Benzene is the primary mobile contaminant at this time. Peter Campbell
4/13/2023 Workplan Requested Request a workplan to address assessment and remediation of elevated levels of contamination in the former underground tank location, quarterly groundwater monitoring and sampling of the onsite water supply well. Peter Campbell
8/22/2023 Document, Report, or Work plan Review - other Review Work Plan to Conduct Quarterly Groundwater and Drinking Water Sampling. Approval to conduct monitoring to assess impact to groundwater for one year. Monitoring to be conducted to determine if there are impacts to groundwater from the abandoned UST's under the pump island. Peter Campbell
12/12/2023 Update or Other Action Shannon & Wilson conducted quarterly groundwater monitoring activities in September 2023. Analytical results showed benzene (maximum 46.1 ug/L) exceeding ADEC Table C cleanup criteria in Well MW5. MW5 is the most recent well installed, located south of the fueling canopy. The remaining groundwater wells either had concentrations of GRO, DRO, VOCs, and/or PAHs below cleanup criteria or the tested analytes were reported as non-detect. In addition, all of the drinking water sample results were reported as non-detect. Peter Campbell
4/1/2024 Long Term Monitoring Workplan or Report Review BTEX and PAH concentrations in the February 2024 sampling event are lower that the September 2023 sampling event. Benzene is significantly lower, from 46.1 to 11.9 ug/L. This could be because of lower leaching and seasonal infiltration patterns. Peter Campbell

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
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