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Site Report: Gustavus Dray Filling Station

Site Name: Gustavus Dray Filling Station
Address: 1 State Dock Road; Intersection of State Dock and Gustavus Roads, Gustavus, AK 99826
File Number: 1507.38.015
Hazard ID: 26418
Status: Active
Staff: Stacee Henderson, 9072628202 stacee.henderson@alaska.gov
Latitude: 58.412359
Longitude: -135.726720
Horizontal Datum:WGS84

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

In May, 2015 a Phase I Environmental Site Assessment was conducted for the property which is operated as a gas station and sometimes as an automotive repair shop. Several sources of contamination were identified and diesel range organics, gasoline range organics, benzene, toluene, and xylenes were confirmed in soil above DEC cleanup levels. Areas of concern include at either end of the conduit pipe for the supply line from the above ground storage tanks to the dispenser island junction vault. The facility has three aboveground storage tanks (ASTs) (two 2,800-gallon and one 3,000-gallon) within a fenced containment berm, and one permanently parked tanker trailer (4,800-gallon) that supply fuel to three dispensers. Dispenser #1 = gasoline; dispenser #2 = #2 diesel, and dispenser #3 = stove/heating oil. Supply lines to all three dispensers were found to be leaking; pooled fuel was noted under dispenser #3. Petroleum-stained soil was also noted in several areas of a pole barn where fuel delivery trucks were stored. Petroleum-stained soil was also noted under a 275-gallon heating oil AST used to supply the main building. There is an onsite drinking water well on the east side of the main building. Although a groundwater flow direction has not been completed, regional groundwater flow is towards Icy Strait with localized deflections to the southwest draining towards the Salmon River. Nearby drinking water wells have been tested and no contaminants were detected.

Action Information

Action Date Action Description DEC Staff
7/14/2015 Document, Report, or Work plan Review - other Release notification and site investigation work plan submitted by Nortech approved by DEC. Bruce Wanstall
7/20/2015 Spill Transferred from Prevention Preparedness and Response Program Spill transferred by PERP staff David Pikul. Spill no. 15119919102; spill date = 7/10/15; substance = petroleum; quantity = unknown; multiple potential sources. Mitzi Read
7/22/2015 Site Added to Database A new site has been added to the database Mitzi Read
7/23/2015 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79789 name: Gustavus Dray Filling Station Mitzi Read
9/25/2015 Document, Report, or Work plan Review - other Nortech submitted Phase II Site Assessment Report; DEC requested a corrective action plan. Bruce Wanstall
9/30/2015 Potentially Responsible Party/State Interest Letter DEC Responsible Party Notification of Liability letter sent certified mail today to Mr. Ed Cahill, owner/operator president of Gustavus Dray Inc. Bruce Wanstall
2/22/2016 Document, Report, or Work plan Review - other DEC reviewed the Phase II Environmental Site Assessment Report (Report) dated September 23, 2015 and Corrective Action Plan, Gustavus Dray, Gustavus Alaska (Plan) dated November 30, 2015 and received by DEC by electronic mail on January 18, 2016. In accordance with Title 18 AAC 75.335(d) the Report is approved and the Plan is approved in accordance with 18 AAC 75.335(b), subsequent to the DEC requests stated in the Approval and Comment letter sent by regular mail today to Gustavus Dray Inc. president, Mr. Edward Cahill. Bruce Wanstall
5/16/2016 Potentially Responsible Party/State Interest Letter DEC Responsible Party Notification of Liability letter sent certified mail today to Mr. Layne Parker, owner/operator of Gustavus Dray Inc. with the DEC Cleanup Process Fact Sheet as an attachment. Bruce Wanstall
6/30/2016 Site Visit One day trip to meet with owner Layne Parker and consultant Elijah Donat to work out details of additional characterization sampling and contaminated soil removal work plan for the filling station. Water wells at locations on properties nearby the station in all directions were identified and visited to obtain permission to collect analytical samples. Some uncertainty remains despite the Phase I and Phase II Site Characterization of soil and groundwater. Bruce Wanstall
8/19/2016 Document, Report, or Work plan Review - other DEC evaluated and approved the Gustavus Dray Filling Station Interim Cleanup Report submitted by Chilkat Environmental Inc. The Report summarized cleanup actions taken to date and set up a plan to remediate the soil stockpile with spring and fall reports to DEC, maintenance of ORC in the on-Site wells, annual sampling of the on-site well, install a new tank farm, and when available excavate the old tank farm and remediate the soil at the soil stockpile site. Bruce Wanstall
6/15/2017 Update or Other Action Chilkat Environmental Inc. (Chilkat) submitted a memo update to inform DEC of site activity at the Gustavus Dray planned in accordance with the DEC approved 2016 Cleanup Report with a two year corrective action plan. Stockpile sampling to remove a lift for land spreading will be performed on the contaminated soil. If any of the composite samples are above 1.5ppm SPLP, no lift will be performed. Results of the stockpile sampling will be submitted with a Laboratory Data Checklist, and a narrative and photos to document the results will submitted in 2017. Other corrective actions scheduled to occur by August 2018, include additional stockpile management, construction of a new tank farm and completing removal of contaminated soil from beneath the old tank farm site. Once constructed, Chilkat will manage contaminated soil that may be encountered when installing new tank supply lines from the new tank farm to the dispenser island. Documentation will follow in November 2018 from Chilkat. Bruce Wanstall
8/30/2017 Document, Report, or Work plan Review - other 3 composite soil samples were collected from 2 feet above berm within the contaminated soil stockpile. These were sent to Friedman & Bruya Inc. for synthetic precipitation leaching procedure (SPLP) for gasoline range organics (GRO). The results were less than 500 µg/L thus the soil sampled is acceptable for lift and subsequent land spreading on site. The responsible party is currently working on replacing the tanks and a cleanup will follow. Danielle Duncan
10/25/2017 Update or Other Action Aboveground storage tank replacement still on the schedule for next summer. Danielle Duncan
8/15/2018 Update or Other Action Spoke to Elijah Donat and the second round of excavation will be underway soon. I requested that for the sump location, the analyses required are PAHs, BTEX, DRO, GRO, RRO, and VOCs. Please have the drinking water wells at the Gustavus Dray and the Sunnyside Market sampled and analyzed for GRO, BTEX, DRO, VOCs, and PAHs. Danielle Duncan
8/21/2018 Update or Other Action According to Chilkat Environmental, the excavation of the former AST area is complete and 300 cubic yards was removed. The tank farm drain was clean but found chunks of drums and absorbents. Twenty cubic yards was excavated form this area and the full suite of analytes will be analyzed. The source now has been excavated. The Dray well was also sampled. At the dispenser island, it is suspected that people pour old fuel down the drain. The closest monitoring well had about 1 mm of product on it and the water was black and slimy. The drain at the island is connected to a drain in the shop which was concreted (need verification). The second drain went to a vault/concrete box with an earth floor, then 50 ft. to where the tank farm was and drained to just outside the tank farm berm and liner. Danielle Duncan
8/21/2018 Site Characterization Workplan Approved Approved the Chilkat Environmental work plan to advance test pits to the groundwater interface at about seven feet belowground. The investigation will begin at the release location and move south. Soil samples will be collected from the groundwater interface and field screened using a photoionization detector (PID). Ten to 20 soil samples will be collected and analyzed for benzene, toluene, ethylbenzene, and xylenes (BTEX). Danielle Duncan
8/28/2018 Site Visit Site visit while in town on other business. Danielle Duncan
8/29/2018 Update or Other Action Approved the excavation, stockpiling, and later screening of soil to a depth of 2 ft. to accommodate the construction of the new containment. This soil is overburden and is most likely uncontaminated. Danielle Duncan
9/13/2018 Update or Other Action The Sunnyside Market drinking water well was sampled by Chilkat Environmental for gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), volatile organic compounds (VOCs), and semi-volatile organics (SVOCs). No contaminants were detected. Danielle Duncan
9/26/2018 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79789 Gustavus Dray Filling Station. Danielle Duncan
9/27/2018 Site Characterization Report Approved Approved the Gustavus Dray Filling Station Interim Cleanup Report 2018 & Groundwater interface sampling this date. The groundwater contamination plume requires delineation. The Gustavus Dray and Sunnyside Cafe wells were sampled and analyzed for VOCs, SVOCs, GRO, DRO, and RRO. Although the majority of the analytical results for the wells were non-detect and met ADEC groundwater cleanup levels in 18 AAC 75.345, there were naphthalenes present at 0.023 to 0.040 µg/L in the Gustavus Dray well, however these data may not be accurate because these compounds were also detected in the laboratory method blank. A new tank farm and dispenser island are being built and more contaminated soil will be excavated. Danielle Duncan
1/30/2019 Workplan Requested Requested a work plan by March 30, 2019 to delineate the extent of groundwater contamination as required by 18 AAC 75.335(b)(2)(G). Danielle Duncan
2/27/2019 Document, Report, or Work plan Review - other Provided comments on the Draft Work Plan this date. Danielle Duncan
6/28/2021 Meeting or Teleconference Held Meeting with consultant regarding stockpile sampling, site history, and data gaps. Rachael Petraeus
7/8/2021 Site Characterization Workplan Approved On July 08, 2021 ADEC conditionally approved a work plan addendum via email that included collecting discreet samples analyzing for GRO, VOCs and PAHs. Rachael Petraeus
8/9/2021 Document, Report, or Work plan Review - other On August 09, 2021 ADEC received "Gustavus Dray Filling Station Monitoring Well Decommissioning Plan" dated August 09, 2021. The proposed plan is to decommission 6 abandoned monitoring wells. Rachael Petraeus
8/19/2021 Site Characterization Workplan Approved On August 19, 2021 ADEC conditionally approved "Gustavus Dray Filling Station Monitoring Well Decommissioning Plan” dated August 19, 2021. The work plan proposes to decommission six monitoring wells. Rachael Petraeus
8/23/2021 Document, Report, or Work plan Review - other On August 23, 2021 ADEC received "Stockpile Sampling Results 2021" dated August 23, 2021. The report summarizes characterization of the remaining 450 cubic yards stockpile. Rachael Petraeus
9/21/2021 Site Characterization Report Approved On September 21, 2021 ADEC approved "Stockpile Sampling Results 2021" dated August 23, 2021. The report summarizes characterization of the remaining 450 cubic yards stockpile and request to landspread stockpile. Rachael Petraeus
12/28/2021 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79789 Gustavus Dray Filling Station. Rachael Petraeus
1/25/2022 Update or Other Action On January 25, 2022 ADEC received a notice the "Gustavus Dray Filling Station Monitoring Well Decommissioning Plan" dated August 19, 2021 which proposed to decommission 6 abandoned monitoring wells was not completed. New work plan will be submitted for spring/summer 2022 along with new groundwater monitoring well installation and groundwater sampling plan. Rachael Petraeus
1/27/2022 Site Characterization Workplan Approved On January 27, 2022 ADEC reviewed the “Gustavus Dray Filling Station Monitoring Well Decommissioning Plan” dated January 25, 2022 via email on January 25, 2022. ADEC has reviewed the work plan and has no comments. The work plan is approved. The work plan proposes to decommission six monitoring wells prior to installation of new monitoring wells. A separate work plan that will address installation of new monitoring wells and groundwater sampling is planned to be submitted to ADEC for review. Rachael Petraeus
5/17/2022 Document, Report, or Work plan Review - other Reviewed the Monitoring Well Installation workplan submitted February 7, 2022. Requested updates. Three wells proposed is not adequate for delineation. Lisa Krebs-Barsis
7/29/2022 Document, Report, or Work plan Review - other Reviewed the revised Monitoring Well Installation workplan submitted June 1, 2022. Requested revisions were not completed, sent back comments asking for revision. Lisa Krebs-Barsis
8/4/2022 Site Characterization Workplan Approved Work plan approved for installation of 3 monitoring wells. Lisa Krebs-Barsis
10/6/2022 Update or Other Action ADEC received the "2022 Site Characterization Report" on October 22, 2022, and the monitoring well decommissioning report on October 6, 2022. Flannery Ballard
11/9/2022 Document, Report, or Work plan Review - other The ADEC is issuing comments in response to both the 2022 Site Characterization Report and the 2022 Monitoring Well Decommissioning Report before they are re-submitted for approval. Flannery Ballard
11/21/2022 Document, Report, or Work plan Review - other The ADEC received a response to comments for both the site characterization and the well decommissioning reports on 11/18/22, and is issuing a response to both before they are re-submitted for approval. Flannery Ballard
3/22/2023 Site Characterization Report Approved The ADEC approved the "2022 monitoring well decommissioning" report which details the decommissioning of the 2016 monitoring wells (MW1-6) that were incorrect installed. MW2 and MW4 could not be decommissioned as they are now under a newly constructed building. Flannery Ballard
3/22/2023 Site Characterization Report Approved The ADEC approved the "2022 site characterization report" this date. The report details the installation of 3 new monitoring wells (MW7-9) to the southwest of the site. The monitoring wells were purged and sampled for GRO, DRO, RRO, VOCs and SVOCs. MW-8 had an exceedance for GRO, ethylbenzene, and naphthalene. MW-7 had an exceedance for naphthalene, and MW-9 was non detect. All drinking water wells were non detect. The ADEC concurred with the reports conclusions that additional groundwater monitoring was necessary. Flannery Ballard
1/12/2024 Site Characterization Report Approved The ADEC received the “2023 Monitoring Well Report”, dated August 11, 2023. A revised “2023 Monitoring Well Report” dated December 19, 2023, was received via email. The revised report is approved. The report generally describes the field activities that took place on July 18, 2023. All monitoring wells were purged using a disposable bailer. Groundwater samples were analyzed for Gasoline Range Organics (GRO), Diesel Range Organics (DRO), Residual Range Organics (RRO), Volatile organic compounds (VOCs), and Semi-volatile organic compounds (SVOCs). A duplicate sample was collected from MW-8 and was not submitted blind to the laboratory. Groundwater samples from monitoring well (MW-7) exceeded the ADEC groundwater cleanup levels for GRO (2,350 µg/L; doubled in concentration from results in 2022), Ethylbenzene (30.7 µg/L), and Naphthalene (20.8 µg/L). Groundwater samples from monitoring well (MW-8) exceeded the ADEC groundwater cleanup levels for GRO (3,630 µg/L), DRO (1,780 µg/L), and Naphthalene (15.3 µg/L); additionally, its duplicate exceeded for 1,3,5-Trimethylbenzene (173 µg/L). Groundwater samples from monitoring well (MW-9) resulted in concentrations below ADEC groundwater cleanup levels and/or no detections for two consecutive sampling events. Stacee Henderson

Contaminant Information

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