Site Report: Sourdough Fuel/Tanana Petroleum Inc. Bulk Fuel

Site Name:	Sourdough Fuel/Tanana Petroleum Inc. Bulk Fuel
Address:	3603 Lathrop Street; , Fairbanks, AK 99707
File Number:	102.26.110
Hazard ID:	24441
Status:	Active
Staff:	Robert Burgess, 9074512153 robert.burgess@alaska.gov
Latitude:	64.811720
Longitude:	-147.743445
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.

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

Multiple releases are being tracked under this Hazard ID (24441); Sourdough Fuel/Tanana Petroleum Inc. Bulk Fuel; Source Area ID 77626; LUST Event ID 1136. Free product on the groundwater was discovered in 1995 and efforts to pump the free product off the groundwater continue. Benzene has been observed at the property edge and across the street. The source of the benzene contamination is still unclear. On October 23, 2003 a loose plug on a pump #2 was found to be leaking when the tanks were uncovered during decommissioning of the belowground piping and replacement with aboveground piping. The duration, and volume of the spill is unknown. The product ran down the side of the tank, and saturated the area immediately beneath the tank. This release was entered separately as: Sourdough Fuel/Tanana Petroleum Inc. UST #2 2003; Hazard ID 22971; Source Area ID 78044; LUST Event ID 2927. In January 2004 a 40-gallon spill reported to the Prevention and Emergency Response Program (PERP) at Tank #2. A flange was found leaking and is assumed to be the result of new stress from recent modification of the piping. Product contained in the tank is #2 diesel. The release was entered separately as: Sourdough Fuel/Tanana Petroleum Inc. UST #2 2004; Hazard ID 23123; Source Area ID 78043; LUST Event ID 2972. ALL FUTURE INFORMATION FOR THE PREVIOUSLY DESCRIBED SITES WILL BE TRACKED UNDER HAZARD ID 24441 (SOURDOUGH FUEL/TANANA PETROLEUM INC. BULK FUEL) UNTIL THE SITE IS READY FOR CLOSURE.

Action Information

Action Date	Action	Description	DEC Staff
4/25/1995	Site Added to Database		Former Staff
4/25/1995	Leaking Underground Storage Tank Release Confirmed - Petroleum	LUST Site created in CSP for source area ID 77626 ADD;	Former Staff
7/20/1995	Underground Storage Tank Site Characterization or Assessment	SA1R; Mtg. held at request of RPCON to discuss draft work plan for bulk fuel USTs that supply trucks for home delivery to HOTs. Discussed location of SBs involving five USTs. Plan approved verbally. Final plan submitted/approved DEC 8/1/95.	Former Staff
9/5/1995	Release Investigation	SI; RPCON reports via phone that free phase diesel found in ground water.	Former Staff
9/27/1995	Update or Other Action	NOR; Wrote letter based on 9/5/95 phone call from RPCON reporting free phase diesel product in ground water after conducting site assessment.	Former Staff
1/11/1996	Release Investigation	SA2A; 11/95 Phase II S.A. submitted. Soils @ depth of 7.5-9 feet bgs indicated DRPH=1,540 ppm with 6 inches free product. Indicating past release occurred. Extent contamination not defined.	Former Staff
1/11/1996	Leaking Underground Storage Tank Cleanup Initiated - Petroleum	LCAU; Recovery of free product from ground water. Quarterly ground water monitoring. Plan to assess western portion of site to define extent of contam. while upgrading UST system during summer of 1996.	Former Staff
11/20/1997	Update or Other Action	ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: PETRO STAR FUEL INC	Former Staff
4/30/2001	Update or Other Action	ADEC receives 4/26/01 workplan to address the delineation of identified diesel product that has been passively collected for several years. At the request of ADEC, the workplan will include assessment, sampling, and product collection as appropriate. Travis/Peterson is consultant.	John Carnahan
9/6/2002	Release Investigation	Release Investigation conducted in summer 2001 by installing well points along the west property boundary.	Janice Wiegers
9/6/2002	Update or Other Action	Monitoring report indicates that MW-3 has been replaced, and the new well contained 3 feet of diesel or heating oil product. Product is being recovered with a peristaltic pump.	Janice Wiegers
3/7/2003	Update or Other Action	Conceptual Site Model submitted. Inoperable MW-3 was replaced with a new well (also called MW-3) two feet away. 70 gallons of product were reportedly recovered from MW-3. Four additional recovery wells were placed 10 to 20 ft from MW-3 - two of which contained product.	Janice Wiegers
4/30/2003	Update or Other Action	Met with Walter Gore and Travis-Peterson, Inc. Discussed conceptual site model and additional work needed at this site for a NFRAP. Product recovery will continue - TPI plans to further evaluate product recoverability. DEC requested workplan.	Janice Wiegers
5/12/2003	Update or Other Action	Groundwater Monitoring report submitted for samples collected in April. 1.05 ft of floating product observedn in MW-3.	Janice Wiegers
6/23/2003	Document, Report, or Work plan Review - other	Well Search report submitted. Nine properties with water wells were found.	Janice Wiegers
10/21/2003	Document, Report, or Work plan Review - other	Groundwater monitoring report submitted. MW-2, MW-4, and MW-5 sampled. Product was present in MW-3. No information was provided on amount of MW-3 or product recovery effort from 4 recovery wells at the site.	Janice Wiegers
10/28/2003	Update or Other Action	Spill reported - soil cleanup will be tracked under Event #2927.	Janice Wiegers
1/16/2004	Update or Other Action	Spill reported - soil cleanup will be tracked under Event #2972.	Janice Wiegers
2/25/2004	Update or Other Action	Product recovery well report submitted. Report describes 4 recovery wells. Product recovery log indicates 208 gallons was recovered in July and August of 2002 from MW3. No information was provided for 2003 or for other wells.	Janice Wiegers
3/30/2004	Update or Other Action	Groundwater monitoring report submitted. Two wells were frozen. Contaminants in MW-4 and MW-5 were below cleanup levels. Well maintenance is needed.	Janice Wiegers
10/6/2004	Document, Report, or Work plan Review - other	Semi-Annual Groundwater Sampling report dated August 26, 2004 was submitted to ADEC. MW-3 had approximately 1.36 feet of product floating on the water table. MW-2 had 1.62 mg/L DRO, MW-4 had 4.75 mg/L DRO, and D-2 had 1.51 mg/L DRO. Samples were also analyzed for GRO and BTEX and were below ADEC cleanup levels.	Deborah Williams
6/2/2005	Document, Report, or Work plan Review - other	New program manager, reviewed report, updated problem statement, and GIS using TopoZone Pro.	Kim DeRuyter
7/5/2005	Document, Report, or Work plan Review - other	GW monitoring report submitted. MW-5 contains 3.22 mg/L DRO, MW-3 has 0.86 feet of free product. All other MW's sampled were non-detect.	Kim DeRuyter
10/21/2005	Document, Report, or Work plan Review - other	Received the Semi-annual Groundwater Monitoring Report for August 31, 2005. Free-phase product was measured at 1.75 feet in MW-3 which has traditionaly had floating product. DRO was seen in NW-1 upgradient of the site. Benzene was detected for the first time in NW-2, and 3 cross gradient. Mann-Kendall analysis on the wells indicated an expanding plume.	Kim DeRuyter
3/30/2006	Update or Other Action	Lattituge/longitude updated to reflect location where product was first observed on the site.	Janice Wiegers
4/21/2006	Update or Other Action	Received e-mail sampling plan. New well points and dataloggers proposed in the December meeting have been removed from the 2006 workplan. Sent letter outlining requirements for CAP for the site.	Kim DeRuyter
6/1/2006	Site Visit	Met with Petro Star Government Compliance and Safety Director, Lisa Lewis and TPECI staff to discuss product recovery efforts and reporting; and the investigation and reporting of the 2003, and 2004 releases.	Kim DeRuyter
9/12/2006	Document, Report, or Work plan Review - other	Semi-annual groundwater monitoring report received, groundwater contaminant levels were mostly unchanged with the exception of MW-7 which was non-detect.	Kim DeRuyter
10/13/2006	Document, Report, or Work plan Review - other	GORE Sorb Soil Gas Monitoring report received. Soil gas concentrations are highest in the ditch along Van Horn near YG-2, and onsite near the service station tanks. Moderately high concentrations were observed on the bulk fuel site as well, but not enough data points were collected to adequately characterize the site.	Kim DeRuyter
1/18/2007	Update or Other Action	Sent letter rejecting conditional closure request but reducing monitoring of all wells to once every other year.	Kim DeRuyter
2/8/2007	Long Term Monitoring Established	Met with Petro Star and TPECI staff to establish a long term monitoring plan for the site. The site management plan for TPI Bulk Fuel Facility will include continued efforts to recover free product until such time that ADEC agrees that it is no longer practical to attempt product recovery. Continue to report product recovery efforts to ADEC in a timely manner. Monitor well MW-3 will be utilized to gage product depth; analytical samples will not be collected from this well while free phase product is present in the well. Analytical samples will be collected from MW-4 and MW-5 once every three years. These samples will be analyzed for diesel and gasoline range organics (DRO and GRO), and benzene, toluene, ethylbenzene, and xylenes (BTEX) analytes.	Kim DeRuyter
2/13/2007	Exposure Tracking Model Ranking	Baseline ranking completed based on current site conditions.	Kim DeRuyter
10/26/2007	Document, Report, or Work plan Review - other	Reviewed annual gw sampling and MW decommission report for 2007. They recovered 173 gal of product from MW-3- did not include product depth. MW-4 and MW-5 had contamination below MCL. Sent RP letter requesting additional free product recovery before a conditional closure is considered.	Former Staff
11/6/2007	Update or Other Action	Combined with other TPI sites (event ID 2927 and 2972)	Former Staff
11/18/2008	Update or Other Action	ADEC received the Soil Stockpile Disposal Workplan for two stockpiles on site (150 cy and 90cy) stored since 2005. Smaller stockpile had DRO above cleanup levels therefore ADEC recommended treatment and re-sampling in 2009. Larger stockpile was approved to be used as fill on other Petro Star properties.	Tamara Cardona-Marek
12/18/2008	Meeting or Teleconference Held	ADEC discussed with Petro Star all Sourdough Fuel sites. The Former Tanana Petroleum facility is under long term monitoring. Sampling from wells MW-4 and MW-5 must occur every three years. Next sampling event should occur in 2009. Product recovery from well MW-3 must continue and be reported to ADEC at least once per year. Product depth and groundwater depth must be included with the product recovery report. Recent product recovery report (including data from 2006-2008) did not include product depth or groundwater depth.	Tamara Cardona-Marek
4/16/2009	Meeting or Teleconference Held	ADEC met with Petro Star and TPECI after an in-depth file review of this facility. File review revealed data gaps and inconsitencies in the data that warrant additional site characterization. ADEC requested that a plan for additional investigation is submitted. Investigation should identify sources and delineate contaminant plume on and offsite.	Tamara Cardona-Marek
3/19/2010	Meeting or Teleconference Held	DEC met with Petro Star and TPECI to discuss status of site. Depth of screens in wells has been verified with a camera. Only well MW-4 may have a well screen below the water table during certain times of the year and may need to be replaced. TPECI recommended that product recovery continue at the MW-3 recovery wells as specified in the long term monitoring plan. Once the product no longer recharges, the extent of dissolved contaminant plume must be investigated. Investigation at this time may affect the current stability of the free product area. Site information and investigations completed thus far at this site will be summarized and an explanation of why TPECI believes the product is not moving off site will be provided to ADEC.	Tamara Cardona-Marek
1/5/2011	Document, Report, or Work plan Review - other	DEC received the 2010 groundwater monitoring report. Report indicates that wells had frost jacked significantly. No new well survey was conducted. Samples resulted in non detects or below cleanup levels for all parameters tested. DEC agrees with TPECI's recommendation of decommissioning and replacing these wells.	Tamara Cardona-Marek
5/27/2014	Meeting or Teleconference Held	DEC and Petro Star met to discuss several sites. This site is being managed with the adjacent site, Sourdough Fuel/Fbks Fuel (102.26.107). DEC is awaiting product recovery data as well as a report on transducers installed at the site in 2012. Petro Star indicated that no product was recovered in 2014 due to there being minimal product present. The transducers should provide data that will allow an evaluation of seasonal shifts in groundwater gradients and elevation, providing a better understanding of groundwater at the site. Additional assessment needs will be determined following a report on the transducer data.	Robert Burgess
6/27/2016	Update or Other Action	DEC received the Fuel Recovery Well Report documenting the amount of fuel recovered via peristaltic pump from four product recovery wells on the site. A total of 65.5 gallons of fuel were recovered over the summer of 2014 while 34 gallons were recovered in 2015.	Robert Burgess
8/15/2016	Update or Other Action	Petro Star employees reported to the UST unit an abnormal amount of fuel recovery from the recovery wells onsite, and stated that ADEC tank #1 is the expected source. The contaminated sites project manager received a call from Mike Travis (Travis/Peterson Environmental) reporting that over 1000 gallons of product had been recovered from the recovery wells over the past 30 days.	Robert Burgess
8/16/2016	Update or Other Action	The Contaminated Sites Program received a spill report submitted by Travis/Peterson Environmental Consulting on behalf of Petro Star. The report documents that 1,022 gallons of what appeared to be fresh #1 Diesel was recovered during the month of July, 2016, and that the suspected source is Tank #5 (same as ADEC tank #1)	Robert Burgess
8/17/2016	Meeting or Teleconference Held	DEC staff met with Petro Star employees and consultants to discuss the need to respond to the apparent new release. DEC stated that source control including tank testing should occur concurrently with increased product recovery and site characterization efforts. Petro Star agreed to put together a brief "email workplan" to describe the first steps of the characterization effort.	Robert Burgess
8/18/2016	Document, Report, or Work plan Review - other	DEC reviewed and provided comments to the email work plan describing sampling of existing monitoring wells for petroleum constituents and inspection of the wells to ensure that the water table is within the well screens during the current high groundwater event. DEC comments included a request to measure product thickness with an oil/water interface probe. Travis/Peterson personnel suggested the use of a down-hole camera to investigate screen placement and well integrity.	Robert Burgess
8/18/2016	Site Visit	DEC staff visited the site to observe the down-hole camera well inspection and sampling as described in the email workplan. In monitoring well MW-3, 3.1 feet of product was observed. Perimeter monitoring wells appeared to be screened appropriately and did not contain free product. DEC project manager approved the sampling of these wells and observed sampling activities. In addition, the DEC observed three totes of water/fuel mixture that was recovered from the recovery wells. Petro Star staff reduced the recovered fuel estimate of 1,022 gallons to approximately 470 gallons following the realization that water had been recovered with the free product.	Robert Burgess
8/31/2016	Site Visit	Staff from the contaminated sites program and the preparedness, prevention and response program visited the site to observe ongoing manual product recovery efforts, observe product levels in the existing recovery wells, and observe the locations of suspected releases. Petro Star and Travis/Peterson staff stated that they no longer suspect a release from a tank and believe that the increased product recovery is an artifact of high groundwater elevations and a change in recovery procedures.	Robert Burgess
9/2/2016	Update or Other Action	DEC sent a letter to Petro Star summarizing interim conclusions regarding the current apparent release, resulting from interviews, site investigations, and a review of the administrative file. The letter also included requests for ongoing action to prevent further releases and to mitigate the potential threats to human health and the environment. Included was a request to immediately prepare a workplan to determine the location and extent of free product as well as information on subsurface lithology that could affect the fate and transport of contaminants. Enhanced product recovery and mitigation was also requested in the letter.	Robert Burgess
9/7/2016	Document, Report, or Work plan Review - other	Travis/Peterson submitted a report for the monitoring event completed on August 18, 2016. Diesel range organics (DRO) were detected at concentrations below cleanup levels in MW-4 and benzene was detected below cleanup levels in MW-6.	Robert Burgess
9/7/2016	Meeting or Teleconference Held	DEC met with Petro Star and Travis/Peterson to discuss site priorities. Agreements made at the meeting included Petro Star proceeding with system testing, the submission of a detailed product recovery protocol with a deadline of September 9, and a meeting on September 12 to discuss the development of a site assessment and release investigation workplan with a due date of September 19.	Robert Burgess
9/9/2016	Update or Other Action	DEC received a site history summary from Travis/Peterson, consisting of a list of reports dating back to 1995 with brief summaries of findings.	Robert Burgess
9/12/2016	Update or Other Action	DEC received a letter from Travis/Peterson Environmental briefly describing current manual product recovery efforts and proposing an automated system. The letter stated that Petro Star employees recover product from the recovery wells "as schedules allow" using a portable pump. The letter also proposed the use of an automated skimmer system and provided a user's manual for the system.	Robert Burgess
9/13/2016	Meeting or Teleconference Held	Petro Star and DEC met to discuss plans for the site with focus on the proposed automated recovery system. DEC gave verbal approval for the system but reiterated that the submitted operation manual does not address the details that had been requested as part of a system installation work plan, such as an operations and maintenance schedule and methods for evaluating system effectiveness. A letter summarizing the meeting was sent to document the discussion.	Robert Burgess
9/15/2016	Site Visit	DEC staff visited the site to observe manual recovery efforts from the four existing recovery wells. The elevation of groundwater has decreased significantly in recent weeks, and it was apparent to staff on site that the existing wells are not installed at a sufficient depth to capture the low groundwater table, as one of the recovery wells had only a few inches of liquid in it. Petro Star staff indicated that the wells usually dry up during winter when the water table is low. DEC requested that Petro Star staff submit weekly product recovery reports documenting the amount of product in wells and the amount of product recovered each day.	Robert Burgess
9/23/2016	Update or Other Action	Petro Star requested an additional extension for submittal of the enhanced product recovery plan.	Robert Burgess
10/3/2016	Document, Report, or Work plan Review - other	DEC received the Enhanced Petroleum Recovery Plan and Field Sampling Plan. The plan includes a section describing short-term plans to enhance product recovery efforts with the installation of new recovery wells and an automated skimmer system, as well as a section focused on delineating the extent of contamination.	Robert Burgess
10/6/2016	Document, Report, or Work plan Review - other	The DEC provided a conditional approval of section 2.0 of the Enhanced Petroleum Recovery Plan & Field Sampling Plan. Section 2.0 describes the installation of replacement recovery wells and the automated skimmer system for free product recovery. Approval was given for this section of the plan in order to ensure that enhanced product recovery could proceed in a timely fashion, however the rest of the plan was not approved. Conditions for approval of section 2.0 included coordinating with the department on extending recovery efforts into the winter season, re-evaluating the monitoring schedule, weekly reporting on product recovery and product thickness in wells, and a more detailed operations and maintenance schedule.	Robert Burgess
10/12/2016	Meeting or Teleconference Held	DEC, Petro Star, and Travis/Peterson met to discuss the Enhanced Petroleum Recovery Plan & Field Sampling plan. Because the enhanced recovery section of the plan (section 2.0) had been approved, the DEC requested that the delineation section of the plan be "streamlined" in a revised workplan to clarify the work that is focused on determining the extent of contamination at the site. During the meeting, DEC also provided specific comments on the workplan and expectations for revision, including moving the proposed borehole locations away from the property boundary and closer to areas that are known to contain free product in order to determine the horizontal and vertical extent of contamination, and to increase field screening frequency All parties agreed that a representative of DEC will be onsite during site work to ensure that decisions made in the field will be agreeable to the department.	Robert Burgess
10/15/2016	Site Visit	DEC project support staff visited the site to observe the installation of the automated skimmer system. Unfortunately the wrong size of well caps were sent with the skimmer system so the installation was unable to proceed. DEC staff discussed the installation of recovery wells and noted that the wells were constructed without filter packs. Soil from drill cuttings that appeared to be contaminated had been left on the site surrounding the recovery wells.	Robert Burgess
10/21/2016	Update or Other Action	DEC received the Free Product Delineation Plan for the facility. The workplan describes the installation of several direct push Geoprobe borings at many locations that were agreed upon during a meeting on October 12, 2016, with field screening to include a "bucket sheen test" which mixes soil from cores with water to see if a sheen is produced as a test for whether free product is being held in soil. As agreed upon in the meeting, some borings will be reserved for placement in the field.	Robert Burgess
10/24/2016	Site Visit	DEC project manager and supporting staff visited the site to observe skimmer system installation. Tubing was extended to recovery wells and connected to skimmers. Contaminated soil from drill cuttings remained on the ground surface near the newly installed wells.	Robert Burgess
10/27/2016	Site Visit	DEC staff visited the site to observe the startup of the automated skimmer system. Because only one of the four wells installed had significant amounts of product, only one of the four skimmers was operated. Initial startup of the system failed to produce product in the visible portions of the line; during troubleshooting a large amount of dirt was pumped into product lines initially. After a few minutes, the product clarified and less dirt was coming up with it, however the skimmer continued to pump sporadically, performing better each time it was removed and shaken per the manufacturer's recommendations on troubleshooting. It appeared that some water was also being taken up and freezing in the lines, indicating that the hydrophobic filter may not have been performing adequately.	Robert Burgess
10/28/2016	Document, Report, or Work plan Review - other	DEC provided several comments to the Free Product Delineation Plan. Comments included the placement of several borings at locations that were agreed upon in the October 12 meeting, performing field screening including the "bucket sheen test" at multiple depths, and collecting additional analytical samples to confirm field screening results. DEC also requested more information to outline the work flow, including how the location of reserved borings would be determined in the field and the number of reserved borings that would be authorized, how the placement of monitoring wells would be determined, and details on well construction as well as sampling and analytical procedures.	Robert Burgess
12/8/2016	Meeting or Teleconference Held	DEC met with PetroStar and Travis/Peterson to discuss problems with the installation of the recovery system including recovery well construction, samplilng, and waste management practices.	Robert Burgess
2/22/2017	Update or Other Action	DEC issued a letter commenting on the Product Recovery Well Installation letter report submitted by Travis/Peterson Environmental Consultants, Inc. (TPECI), following multiple conversations with TPECI staff. The letter requests clarification of recovery well installation and development techniques, which did not follow best industry practice or DEC guidance.	Robert Burgess
3/23/2017	Workplan Requested	The compliance advisory letter included requests for multiple deliverables, including a recovery system operations plan, a free product delineation plan, a monitoring well sampling plan, a work plan and schedule for installing and sampling additional monitoring wells to delineate the full extent of groundwater contamination, and a corrective action plan following and informed by the results of the other planned work.	Robert Burgess
3/23/2017	Update or Other Action	DEC issued a compliance advisory letter to Petro Star to inform them that their they are out of compliance due to a failure to conduct a Release Investigation and Corrective Action following their reporting of a suspected new release. The letter outlined specific steps that are required for the facility to come back into compliance.	Robert Burgess
4/6/2017	Update or Other Action	DEC received a product recovery system inspection letter report from Travis/Peterson. Additionally, DEC granted a request to extend the deadline for a recovery systems operation plan until April 21st, leaving the other deadlines in the compliance advisory letter the same. The email also detailed what is expected in weekly inspection and manual product recovery reports to begin immediately until the above-mentioned plan is received and approved.	Robert Burgess
4/21/2017	Document, Report, or Work plan Review - other	DEC received the Product Recovery Systems Operations Plan from Travis/Peterson Environmental, as well as the Groundwater Monitoring Well Routine Sampling Plan. Following email submittal, another email was received with a different version of the Monitoring Well Routine Sampling Plan and including a request to use the version from the second email.	Robert Burgess
5/8/2017	Meeting or Teleconference Held	DEC met with Petro Star and Shannon & Wilson, Inc. to discuss ongoing progress and plans at several sites.	Robert Burgess
6/1/2017	Document, Report, or Work plan Review - other	DEC provided comments to the Recovery System Operations Plan and the Groundwater Monitoring Well Routine Sampling Plan. Comments to the Sampling Plan note discrepancies with past reports in the background and site description sections, the need to include attempts to sample during the winter quarter (which was not included in the work plan due to possible ice blockage), and revisions of text and figures for clarification. Comments to the Recovery Plan include discrepancies between product recovery techniques being described versus performed, the need for DEC approval before seasonal system shutdown, and the need for additional details to describe what types of information will be gathered and how the automated system will be inspected.	Robert Burgess
6/7/2017	Update or Other Action	DEC received a request via email from Travis/Peterson to "pump down the recovery wells" prior to setting up the automated skimmer system, as they discovered significant free product in the waste collection drums and hypothesize that "deeper frozen soils may be temporary [sic] limiting the upper aquifer. Thus, this is a unique period to recovery [sic] fuel if its [sic] present in the immediate area." DEC granted approval on the condition that the DEC project manager can be in the field to observe the process.	Robert Burgess
6/8/2017	Site Visit	DEC project manager visited the site to observe the "pump down" of recovery wells. The process involved a high volume pump with a hose that reached well into the groundwater table. Pumping proceeded at a high volume, and recovered several dozen gallons of water with emulsified product.	Robert Burgess
7/12/2017	Document, Report, or Work plan Review - other	DEC received the "Additional Site Characterization Work Plan" from Shannon & Wilson Geotechnical and Environmental Consultants, Inc.	Robert Burgess
7/12/2017	Document, Report, or Work plan Review - other	DEC received the Product Recovery System Installation and Startup report for April - June 2017 from Travis/Peterson environmental. The report documents the activities performed by Travis/Peterson to install and start operations for the automated product recovery system.	Robert Burgess
7/31/2017	Document, Report, or Work plan Review - other	DEC provided comments to the "Additional Site Characterization Work Plan" submitted by Shannon & Wilson. Comments were minor but revisions were requested for clarity.	Robert Burgess
8/7/2017	Site Characterization Workplan Approved	DEC received, reviewed, and approved a revised Additional Site Characterization Work Plan.	Robert Burgess
8/29/2017	Site Characterization Workplan Approved	Work plan addendum approved. The addendum describes installation of additional borings and temporary well points in order to complete product delineation on site and start collecting information about the dissolved groundwater plume near the area of product contamination.	Janice Wiegers
10/3/2017	Update or Other Action	DEC sent a letter to Petro Star noting that monthly recovery reports have not been received, and requesting a summary report documenting product recovery system operation covering the period beginning on June 14 through the week prior to report submittal. A deadline of November 17, 2017 was included in the request. DEC also provided approval to shut down the automated recovery system to avoid freezing of lines and skimmers, as winter is coming.	Robert Burgess
10/23/2017	Document, Report, or Work plan Review - other	DEC reviewed and approved the Monitoring Well Installation Work Plan Addendum with the condition that Petro Star agrees to sample the soil boring intervals with the highest field screening reading using a photoionization detector (PID), when PID readings exceed 20 ppmv, in addition to taking a sample from the base of each boring.	Robert Burgess
11/16/2017	Document, Report, or Work plan Review - other	DEC received the 2017 Product Recovery System Operations Summary from Shannon & Wilson. The report documents the operation and maintenance of the product recovery system during the 2017 field season, including dates of operation, amount of product recovered, and disposal of recovered product and incidentally recovered water.	Robert Burgess
11/20/2017	Document, Report, or Work plan Review - other	DEC reviewed and approved the Proposed Additional Product Recovery Wells work plan addendum. The addendum describes the installation of two additional wells to the north of MW17-17 in locations where site characterization efforts suggested that free product is expected to be located.	Robert Burgess
1/11/2018	Update or Other Action	DEC received the Product Recovery System Operations Work Plan Addendum and the Product Recovery Operations Update for December 2017 from Shannon & Wilson.	Robert Burgess
3/7/2018	Document, Report, or Work plan Review - other	DEC submitted comments to the Proposed Product Recovery System Operations Work Plan Addendum and requested a revised work plan by April 30, 2018.	Robert Burgess
4/26/2018	Document, Report, or Work plan Review - other	DEC received the Revised Product Recovery Operations Work Plan Addendum from Shannon & Wilson.	Robert Burgess
5/11/2018	Document, Report, or Work plan Review - other	DEC received the Well Decommissioning Work Plan from Shannon & Wilson, Inc. The work plan describes proposed methods for decommissioning 8 product recovery wells that are non-functional due to improper installation and lack of maintenance.	Robert Burgess
5/15/2018	Document, Report, or Work plan Review - other	DEC received the April 2018 Product Recovery Operations update, summarizing the manual product recovery operations that took place in the month of April.	Robert Burgess
5/31/2018	Document, Report, or Work plan Review - other	DEC received the Release Investigation Report from Shannon & Wilson. The report documents the advancement of six soil borings at the locations as close as possible to locations required by regulation in order to investigate whether a release occurred. A "sheen test" to determine whether soils may contain free product was also conducted. The report did not discuss conclusions regarding whether the suspected release was confirmed, though contaminants of concern were detected above cleanup levels in each boring, and sheen tests were positive.	Robert Burgess
10/1/2018	Document, Report, or Work plan Review - other	DEC received the June And July 2018 Product Recovery Operations Update, dated August 17, 2018. The report describes the manual product recovery from 2 wells and automated recovery from 8 wells during the months of June and July. Over 200 gallons of product were recovered over this time period.	Robert Burgess
10/2/2018	Document, Report, or Work plan Review - other	DEC received the Interim Site Characterization Report dated Aug. 8, 2018, and describing soil and groundwater sampling activities intended to further delineate the extent of soil contamination, free product, and dissolved phase contaminant plumes at the site. Results indicate that the free product plume extends to the north and southwest of the source area, based on the results of warm water sheen tests with soil samples. The dissolved phase plume is also not yet delineated; results from upgradient wells indicate a possible upgradient source of dissolved phase contaminants.	Robert Burgess
10/16/2018	Document, Report, or Work plan Review - other	DEC received the September 2018 Product Recovery Operations Update dated October 16, 2018. The report summarizes manual and automated product recovery for the month of September.	Robert Burgess
6/5/2019	Site Characterization Workplan Approved	DEC reviewed and approved the 2019 Site Characterization Work Plan, which describes the installation and sampling of additional soil borings, monitoring wells, and temporary well points to better define the extent of contamination in soil and groundwater.	Robert Burgess
7/23/2019	Document, Report, or Work plan Review - other	DEC received and reviewed the second quarter product recovery operations report. The report documents the recovery of free-phase petroleum for the second quarter of 2019 (April through June) using manual and automated recovery methods.	Robert Burgess
8/20/2019	Offsite Soil or Groundwater Disposal Approved	DEC approved the transport of approximately 350 gallons of water purged from groundwater wells and 1 drum of soil cuttings. Soil will be treated by thermal incineration at OIT, and groundwater will be transported to the Petro Star refinery and processed through the oil/water separator.	Robert Burgess
10/1/2019	Update or Other Action	DEC approved the seasonal shutdown of the automated product recovery system to avoid freezing lines because winter is coming.	Robert Burgess
11/13/2019	Document, Report, or Work plan Review - other	DEC received and reviewed the third quarter 2019 product recovery operations update report. The report documents the recovery of free-phase petroleum for the third quarter of 2019 (July through September) using manual and automated recovery methods.	Robert Burgess
1/7/2020	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 77626 Bulk Fuel ASTs & Dispenser.	Robert Burgess
3/18/2020	Document, Report, or Work plan Review - other	DEC received and reviewed the 2019 Site Characterization Report. The report documents the installation of several borings, monitoring wells, and temporary well points to better define the extent of soil and groundwater contamination and LNAPL (free product). The report states that the extent of free product is now defined, but additional delineation of the groundwater plume is necessary. The DEC provided comments to the report and requested a revised final report be submitted in late April.	Robert Burgess
6/16/2020	Document, Report, or Work plan Review - other	The DEC received the Revised 2019 SIte Characterization Report and responses to comments. One comment from DEC was agreement with a recommendation from the consultant for additional delineation of the northwest boundary of groundwater contamination. The consultants removed this request from the revised report due to the potential for an additional contaminant source on Young's Gear property, based on historical monitoring results that indicate higher concentrations on the downgradient property compared to those found during investigations at this site.	Robert Burgess
1/11/2021	Document, Report, or Work plan Review - other	DEC received the 2020 Product Recovery Operations Update from Shannon & Wilson. The report summarizes the product automated and manual product recovery operations that took place in 2020. The report notes that the amount of product recovered is less than previous years, which may indicate that the total amount of recoverable product is decreasing.	Robert Burgess
5/6/2022	Document, Report, or Work plan Review - other	DEC reviewed the 2021 Site Characterization Report. The report documents results from sampling existing monitoring wells in addition to temporary well points on upgradient properties. Upgradient well points did not contain petroleum contaminants. The report also documents the presence of vinyl chloride above groundwater cleanup levels and detections of tetrachloroethene (PCE) and trichloroethene (TCE) below cleanup levels. Vinyl chloride was detected in upgradient well point samples, which may indicate an off-site source. The report recommends continued monitoring and a baildown test to evaluate whether additional product recovery is practicable.	Robert Burgess

Action Date

Action

Description

DEC Staff

4/25/1995

Site Added to Database

Former Staff

4/25/1995

Leaking Underground Storage Tank Release Confirmed - Petroleum

LUST Site created in CSP for source area ID 77626 ADD;

Former Staff

7/20/1995

Underground Storage Tank Site Characterization or Assessment

SA1R; Mtg. held at request of RPCON to discuss draft work plan for bulk fuel USTs that supply trucks for home delivery to HOTs. Discussed location of SBs involving five USTs. Plan approved verbally. Final plan submitted/approved DEC 8/1/95.

Former Staff

9/5/1995

Release Investigation

SI; RPCON reports via phone that free phase diesel found in ground water.

Former Staff

9/27/1995

Update or Other Action

NOR; Wrote letter based on 9/5/95 phone call from RPCON reporting free phase diesel product in ground water after conducting site assessment.

Former Staff

1/11/1996

Release Investigation

SA2A; 11/95 Phase II S.A. submitted. Soils @ depth of 7.5-9 feet bgs indicated DRPH=1,540 ppm with 6 inches free product. Indicating past release occurred. Extent contamination not defined.

Former Staff

1/11/1996

Leaking Underground Storage Tank Cleanup Initiated - Petroleum

LCAU; Recovery of free product from ground water. Quarterly ground water monitoring. Plan to assess western portion of site to define extent of contam. while upgrading UST system during summer of 1996.

Former Staff

11/20/1997

Update or Other Action

ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: PETRO STAR FUEL INC

Former Staff

4/30/2001

Update or Other Action

ADEC receives 4/26/01 workplan to address the delineation of identified diesel product that has been passively collected for several years. At the request of ADEC, the workplan will include assessment, sampling, and product collection as appropriate. Travis/Peterson is consultant.

John Carnahan

9/6/2002

Release Investigation

Release Investigation conducted in summer 2001 by installing well points along the west property boundary.

Janice Wiegers

9/6/2002

Update or Other Action

Monitoring report indicates that MW-3 has been replaced, and the new well contained 3 feet of diesel or heating oil product. Product is being recovered with a peristaltic pump.

Janice Wiegers

3/7/2003

Update or Other Action

Conceptual Site Model submitted. Inoperable MW-3 was replaced with a new well (also called MW-3) two feet away. 70 gallons of product were reportedly recovered from MW-3. Four additional recovery wells were placed 10 to 20 ft from MW-3 - two of which contained product.

Janice Wiegers

4/30/2003

Update or Other Action

Met with Walter Gore and Travis-Peterson, Inc. Discussed conceptual site model and additional work needed at this site for a NFRAP. Product recovery will continue - TPI plans to further evaluate product recoverability. DEC requested workplan.

Janice Wiegers

5/12/2003

Update or Other Action

Groundwater Monitoring report submitted for samples collected in April. 1.05 ft of floating product observedn in MW-3.

Janice Wiegers

6/23/2003

Document, Report, or Work plan Review - other

Well Search report submitted. Nine properties with water wells were found.

Janice Wiegers

10/21/2003

Document, Report, or Work plan Review - other

Groundwater monitoring report submitted. MW-2, MW-4, and MW-5 sampled. Product was present in MW-3. No information was provided on amount of MW-3 or product recovery effort from 4 recovery wells at the site.

Janice Wiegers

10/28/2003

Update or Other Action

Spill reported - soil cleanup will be tracked under Event #2927.

Janice Wiegers

1/16/2004

Update or Other Action

Spill reported - soil cleanup will be tracked under Event #2972.

Janice Wiegers

2/25/2004

Update or Other Action

Product recovery well report submitted. Report describes 4 recovery wells. Product recovery log indicates 208 gallons was recovered in July and August of 2002 from MW3. No information was provided for 2003 or for other wells.

Janice Wiegers

3/30/2004

Update or Other Action

Groundwater monitoring report submitted. Two wells were frozen. Contaminants in MW-4 and MW-5 were below cleanup levels. Well maintenance is needed.

Janice Wiegers

10/6/2004

Document, Report, or Work plan Review - other

Semi-Annual Groundwater Sampling report dated August 26, 2004 was submitted to ADEC. MW-3 had approximately 1.36 feet of product floating on the water table. MW-2 had 1.62 mg/L DRO, MW-4 had 4.75 mg/L DRO, and D-2 had 1.51 mg/L DRO. Samples were also analyzed for GRO and BTEX and were below ADEC cleanup levels.

Deborah Williams

6/2/2005

Document, Report, or Work plan Review - other

New program manager, reviewed report, updated problem statement, and GIS using TopoZone Pro.

Kim DeRuyter

7/5/2005

Document, Report, or Work plan Review - other

GW monitoring report submitted. MW-5 contains 3.22 mg/L DRO, MW-3 has 0.86 feet of free product. All other MW's sampled were non-detect.

Kim DeRuyter

10/21/2005

Document, Report, or Work plan Review - other

Received the Semi-annual Groundwater Monitoring Report for August 31, 2005. Free-phase product was measured at 1.75 feet in MW-3 which has traditionaly had floating product. DRO was seen in NW-1 upgradient of the site. Benzene was detected for the first time in NW-2, and 3 cross gradient. Mann-Kendall analysis on the wells indicated an expanding plume.

Kim DeRuyter

3/30/2006

Update or Other Action

Lattituge/longitude updated to reflect location where product was first observed on the site.

Janice Wiegers

4/21/2006

Update or Other Action

Received e-mail sampling plan. New well points and dataloggers proposed in the December meeting have been removed from the 2006 workplan. Sent letter outlining requirements for CAP for the site.

Kim DeRuyter

6/1/2006

Site Visit

Met with Petro Star Government Compliance and Safety Director, Lisa Lewis and TPECI staff to discuss product recovery efforts and reporting; and the investigation and reporting of the 2003, and 2004 releases.

Kim DeRuyter

9/12/2006

Document, Report, or Work plan Review - other

Semi-annual groundwater monitoring report received, groundwater contaminant levels were mostly unchanged with the exception of MW-7 which was non-detect.

Kim DeRuyter

10/13/2006

Document, Report, or Work plan Review - other

GORE Sorb Soil Gas Monitoring report received. Soil gas concentrations are highest in the ditch along Van Horn near YG-2, and onsite near the service station tanks. Moderately high concentrations were observed on the bulk fuel site as well, but not enough data points were collected to adequately characterize the site.

Kim DeRuyter

1/18/2007

Update or Other Action

Sent letter rejecting conditional closure request but reducing monitoring of all wells to once every other year.

Kim DeRuyter

2/8/2007

Long Term Monitoring Established

Met with Petro Star and TPECI staff to establish a long term monitoring plan for the site. The site management plan for TPI Bulk Fuel Facility will include continued efforts to recover free product until such time that ADEC agrees that it is no longer practical to attempt product recovery. Continue to report product recovery efforts to ADEC in a timely manner. Monitor well MW-3 will be utilized to gage product depth; analytical samples will not be collected from this well while free phase product is present in the well. Analytical samples will be collected from MW-4 and MW-5 once every three years. These samples will be analyzed for diesel and gasoline range organics (DRO and GRO), and benzene, toluene, ethylbenzene, and xylenes (BTEX) analytes.

Kim DeRuyter

2/13/2007

Exposure Tracking Model Ranking

Baseline ranking completed based on current site conditions.

Kim DeRuyter

10/26/2007

Document, Report, or Work plan Review - other

Reviewed annual gw sampling and MW decommission report for 2007. They recovered 173 gal of product from MW-3- did not include product depth. MW-4 and MW-5 had contamination below MCL. Sent RP letter requesting additional free product recovery before a conditional closure is considered.

Former Staff

11/6/2007

Update or Other Action

Combined with other TPI sites (event ID 2927 and 2972)

Former Staff

11/18/2008

Update or Other Action

ADEC received the Soil Stockpile Disposal Workplan for two stockpiles on site (150 cy and 90cy) stored since 2005. Smaller stockpile had DRO above cleanup levels therefore ADEC recommended treatment and re-sampling in 2009. Larger stockpile was approved to be used as fill on other Petro Star properties.

Tamara Cardona-Marek

12/18/2008

Meeting or Teleconference Held

ADEC discussed with Petro Star all Sourdough Fuel sites. The Former Tanana Petroleum facility is under long term monitoring. Sampling from wells MW-4 and MW-5 must occur every three years. Next sampling event should occur in 2009. Product recovery from well MW-3 must continue and be reported to ADEC at least once per year. Product depth and groundwater depth must be included with the product recovery report. Recent product recovery report (including data from 2006-2008) did not include product depth or groundwater depth.

Tamara Cardona-Marek

4/16/2009

Meeting or Teleconference Held

ADEC met with Petro Star and TPECI after an in-depth file review of this facility. File review revealed data gaps and inconsitencies in the data that warrant additional site characterization. ADEC requested that a plan for additional investigation is submitted. Investigation should identify sources and delineate contaminant plume on and offsite.

Tamara Cardona-Marek

3/19/2010

Meeting or Teleconference Held

DEC met with Petro Star and TPECI to discuss status of site. Depth of screens in wells has been verified with a camera. Only well MW-4 may have a well screen below the water table during certain times of the year and may need to be replaced. TPECI recommended that product recovery continue at the MW-3 recovery wells as specified in the long term monitoring plan. Once the product no longer recharges, the extent of dissolved contaminant plume must be investigated. Investigation at this time may affect the current stability of the free product area. Site information and investigations completed thus far at this site will be summarized and an explanation of why TPECI believes the product is not moving off site will be provided to ADEC.

Tamara Cardona-Marek

1/5/2011

Document, Report, or Work plan Review - other

DEC received the 2010 groundwater monitoring report. Report indicates that wells had frost jacked significantly. No new well survey was conducted. Samples resulted in non detects or below cleanup levels for all parameters tested. DEC agrees with TPECI's recommendation of decommissioning and replacing these wells.

Tamara Cardona-Marek

5/27/2014

Meeting or Teleconference Held

DEC and Petro Star met to discuss several sites. This site is being managed with the adjacent site, Sourdough Fuel/Fbks Fuel (102.26.107). DEC is awaiting product recovery data as well as a report on transducers installed at the site in 2012. Petro Star indicated that no product was recovered in 2014 due to there being minimal product present. The transducers should provide data that will allow an evaluation of seasonal shifts in groundwater gradients and elevation, providing a better understanding of groundwater at the site. Additional assessment needs will be determined following a report on the transducer data.

Robert Burgess

6/27/2016

Update or Other Action

DEC received the Fuel Recovery Well Report documenting the amount of fuel recovered via peristaltic pump from four product recovery wells on the site. A total of 65.5 gallons of fuel were recovered over the summer of 2014 while 34 gallons were recovered in 2015.

Robert Burgess

8/15/2016

Update or Other Action

Petro Star employees reported to the UST unit an abnormal amount of fuel recovery from the recovery wells onsite, and stated that ADEC tank #1 is the expected source. The contaminated sites project manager received a call from Mike Travis (Travis/Peterson Environmental) reporting that over 1000 gallons of product had been recovered from the recovery wells over the past 30 days.

Robert Burgess

8/16/2016

Update or Other Action

The Contaminated Sites Program received a spill report submitted by Travis/Peterson Environmental Consulting on behalf of Petro Star. The report documents that 1,022 gallons of what appeared to be fresh #1 Diesel was recovered during the month of July, 2016, and that the suspected source is Tank #5 (same as ADEC tank #1)

Robert Burgess

8/17/2016

Meeting or Teleconference Held

DEC staff met with Petro Star employees and consultants to discuss the need to respond to the apparent new release. DEC stated that source control including tank testing should occur concurrently with increased product recovery and site characterization efforts. Petro Star agreed to put together a brief "email workplan" to describe the first steps of the characterization effort.

Robert Burgess

8/18/2016

Document, Report, or Work plan Review - other

DEC reviewed and provided comments to the email work plan describing sampling of existing monitoring wells for petroleum constituents and inspection of the wells to ensure that the water table is within the well screens during the current high groundwater event. DEC comments included a request to measure product thickness with an oil/water interface probe. Travis/Peterson personnel suggested the use of a down-hole camera to investigate screen placement and well integrity.

Robert Burgess

8/18/2016

Site Visit

DEC staff visited the site to observe the down-hole camera well inspection and sampling as described in the email workplan. In monitoring well MW-3, 3.1 feet of product was observed. Perimeter monitoring wells appeared to be screened appropriately and did not contain free product. DEC project manager approved the sampling of these wells and observed sampling activities. In addition, the DEC observed three totes of water/fuel mixture that was recovered from the recovery wells. Petro Star staff reduced the recovered fuel estimate of 1,022 gallons to approximately 470 gallons following the realization that water had been recovered with the free product.

Robert Burgess

8/31/2016

Site Visit

Staff from the contaminated sites program and the preparedness, prevention and response program visited the site to observe ongoing manual product recovery efforts, observe product levels in the existing recovery wells, and observe the locations of suspected releases. Petro Star and Travis/Peterson staff stated that they no longer suspect a release from a tank and believe that the increased product recovery is an artifact of high groundwater elevations and a change in recovery procedures.

Robert Burgess

9/2/2016

Update or Other Action

DEC sent a letter to Petro Star summarizing interim conclusions regarding the current apparent release, resulting from interviews, site investigations, and a review of the administrative file. The letter also included requests for ongoing action to prevent further releases and to mitigate the potential threats to human health and the environment. Included was a request to immediately prepare a workplan to determine the location and extent of free product as well as information on subsurface lithology that could affect the fate and transport of contaminants. Enhanced product recovery and mitigation was also requested in the letter.

Robert Burgess

9/7/2016

Document, Report, or Work plan Review - other

Travis/Peterson submitted a report for the monitoring event completed on August 18, 2016. Diesel range organics (DRO) were detected at concentrations below cleanup levels in MW-4 and benzene was detected below cleanup levels in MW-6.

Robert Burgess

9/7/2016

Meeting or Teleconference Held

DEC met with Petro Star and Travis/Peterson to discuss site priorities. Agreements made at the meeting included Petro Star proceeding with system testing, the submission of a detailed product recovery protocol with a deadline of September 9, and a meeting on September 12 to discuss the development of a site assessment and release investigation workplan with a due date of September 19.

Robert Burgess

9/9/2016

Update or Other Action

DEC received a site history summary from Travis/Peterson, consisting of a list of reports dating back to 1995 with brief summaries of findings.

Robert Burgess

9/12/2016

Update or Other Action

DEC received a letter from Travis/Peterson Environmental briefly describing current manual product recovery efforts and proposing an automated system. The letter stated that Petro Star employees recover product from the recovery wells "as schedules allow" using a portable pump. The letter also proposed the use of an automated skimmer system and provided a user's manual for the system.

Robert Burgess

9/13/2016

Meeting or Teleconference Held

Petro Star and DEC met to discuss plans for the site with focus on the proposed automated recovery system. DEC gave verbal approval for the system but reiterated that the submitted operation manual does not address the details that had been requested as part of a system installation work plan, such as an operations and maintenance schedule and methods for evaluating system effectiveness. A letter summarizing the meeting was sent to document the discussion.

Robert Burgess

9/15/2016

Site Visit

DEC staff visited the site to observe manual recovery efforts from the four existing recovery wells. The elevation of groundwater has decreased significantly in recent weeks, and it was apparent to staff on site that the existing wells are not installed at a sufficient depth to capture the low groundwater table, as one of the recovery wells had only a few inches of liquid in it. Petro Star staff indicated that the wells usually dry up during winter when the water table is low. DEC requested that Petro Star staff submit weekly product recovery reports documenting the amount of product in wells and the amount of product recovered each day.

Robert Burgess

9/23/2016

Update or Other Action

Petro Star requested an additional extension for submittal of the enhanced product recovery plan.

Robert Burgess

10/3/2016

Document, Report, or Work plan Review - other

DEC received the Enhanced Petroleum Recovery Plan and Field Sampling Plan. The plan includes a section describing short-term plans to enhance product recovery efforts with the installation of new recovery wells and an automated skimmer system, as well as a section focused on delineating the extent of contamination.

Robert Burgess

10/6/2016

Document, Report, or Work plan Review - other

The DEC provided a conditional approval of section 2.0 of the Enhanced Petroleum Recovery Plan & Field Sampling Plan. Section 2.0 describes the installation of replacement recovery wells and the automated skimmer system for free product recovery. Approval was given for this section of the plan in order to ensure that enhanced product recovery could proceed in a timely fashion, however the rest of the plan was not approved. Conditions for approval of section 2.0 included coordinating with the department on extending recovery efforts into the winter season, re-evaluating the monitoring schedule, weekly reporting on product recovery and product thickness in wells, and a more detailed operations and maintenance schedule.

Robert Burgess

10/12/2016

Meeting or Teleconference Held

DEC, Petro Star, and Travis/Peterson met to discuss the Enhanced Petroleum Recovery Plan & Field Sampling plan. Because the enhanced recovery section of the plan (section 2.0) had been approved, the DEC requested that the delineation section of the plan be "streamlined" in a revised workplan to clarify the work that is focused on determining the extent of contamination at the site. During the meeting, DEC also provided specific comments on the workplan and expectations for revision, including moving the proposed borehole locations away from the property boundary and closer to areas that are known to contain free product in order to determine the horizontal and vertical extent of contamination, and to increase field screening frequency All parties agreed that a representative of DEC will be onsite during site work to ensure that decisions made in the field will be agreeable to the department.

Robert Burgess

10/15/2016

Site Visit

DEC project support staff visited the site to observe the installation of the automated skimmer system. Unfortunately the wrong size of well caps were sent with the skimmer system so the installation was unable to proceed. DEC staff discussed the installation of recovery wells and noted that the wells were constructed without filter packs. Soil from drill cuttings that appeared to be contaminated had been left on the site surrounding the recovery wells.

Robert Burgess

10/21/2016

Update or Other Action

DEC received the Free Product Delineation Plan for the facility. The workplan describes the installation of several direct push Geoprobe borings at many locations that were agreed upon during a meeting on October 12, 2016, with field screening to include a "bucket sheen test" which mixes soil from cores with water to see if a sheen is produced as a test for whether free product is being held in soil. As agreed upon in the meeting, some borings will be reserved for placement in the field.

Robert Burgess

10/24/2016

Site Visit

DEC project manager and supporting staff visited the site to observe skimmer system installation. Tubing was extended to recovery wells and connected to skimmers. Contaminated soil from drill cuttings remained on the ground surface near the newly installed wells.

Robert Burgess

10/27/2016

Site Visit

DEC staff visited the site to observe the startup of the automated skimmer system. Because only one of the four wells installed had significant amounts of product, only one of the four skimmers was operated. Initial startup of the system failed to produce product in the visible portions of the line; during troubleshooting a large amount of dirt was pumped into product lines initially. After a few minutes, the product clarified and less dirt was coming up with it, however the skimmer continued to pump sporadically, performing better each time it was removed and shaken per the manufacturer's recommendations on troubleshooting. It appeared that some water was also being taken up and freezing in the lines, indicating that the hydrophobic filter may not have been performing adequately.

Robert Burgess

10/28/2016

Document, Report, or Work plan Review - other

DEC provided several comments to the Free Product Delineation Plan. Comments included the placement of several borings at locations that were agreed upon in the October 12 meeting, performing field screening including the "bucket sheen test" at multiple depths, and collecting additional analytical samples to confirm field screening results. DEC also requested more information to outline the work flow, including how the location of reserved borings would be determined in the field and the number of reserved borings that would be authorized, how the placement of monitoring wells would be determined, and details on well construction as well as sampling and analytical procedures.

Robert Burgess

12/8/2016

Meeting or Teleconference Held

DEC met with PetroStar and Travis/Peterson to discuss problems with the installation of the recovery system including recovery well construction, samplilng, and waste management practices.

Robert Burgess

2/22/2017

Update or Other Action

DEC issued a letter commenting on the Product Recovery Well Installation letter report submitted by Travis/Peterson Environmental Consultants, Inc. (TPECI), following multiple conversations with TPECI staff. The letter requests clarification of recovery well installation and development techniques, which did not follow best industry practice or DEC guidance.

Robert Burgess

3/23/2017

Workplan Requested

The compliance advisory letter included requests for multiple deliverables, including a recovery system operations plan, a free product delineation plan, a monitoring well sampling plan, a work plan and schedule for installing and sampling additional monitoring wells to delineate the full extent of groundwater contamination, and a corrective action plan following and informed by the results of the other planned work.

Robert Burgess

3/23/2017

Update or Other Action

DEC issued a compliance advisory letter to Petro Star to inform them that their they are out of compliance due to a failure to conduct a Release Investigation and Corrective Action following their reporting of a suspected new release. The letter outlined specific steps that are required for the facility to come back into compliance.

Robert Burgess

4/6/2017

Update or Other Action

DEC received a product recovery system inspection letter report from Travis/Peterson. Additionally, DEC granted a request to extend the deadline for a recovery systems operation plan until April 21st, leaving the other deadlines in the compliance advisory letter the same. The email also detailed what is expected in weekly inspection and manual product recovery reports to begin immediately until the above-mentioned plan is received and approved.

Robert Burgess

4/21/2017

Document, Report, or Work plan Review - other

DEC received the Product Recovery Systems Operations Plan from Travis/Peterson Environmental, as well as the Groundwater Monitoring Well Routine Sampling Plan. Following email submittal, another email was received with a different version of the Monitoring Well Routine Sampling Plan and including a request to use the version from the second email.

Robert Burgess

5/8/2017

Meeting or Teleconference Held

DEC met with Petro Star and Shannon & Wilson, Inc. to discuss ongoing progress and plans at several sites.

Robert Burgess

6/1/2017

Document, Report, or Work plan Review - other

DEC provided comments to the Recovery System Operations Plan and the Groundwater Monitoring Well Routine Sampling Plan. Comments to the Sampling Plan note discrepancies with past reports in the background and site description sections, the need to include attempts to sample during the winter quarter (which was not included in the work plan due to possible ice blockage), and revisions of text and figures for clarification. Comments to the Recovery Plan include discrepancies between product recovery techniques being described versus performed, the need for DEC approval before seasonal system shutdown, and the need for additional details to describe what types of information will be gathered and how the automated system will be inspected.

Robert Burgess

6/7/2017

Update or Other Action

DEC received a request via email from Travis/Peterson to "pump down the recovery wells" prior to setting up the automated skimmer system, as they discovered significant free product in the waste collection drums and hypothesize that "deeper frozen soils may be temporary [sic] limiting the upper aquifer. Thus, this is a unique period to recovery [sic] fuel if its [sic] present in the immediate area." DEC granted approval on the condition that the DEC project manager can be in the field to observe the process.

Robert Burgess

6/8/2017

Site Visit

DEC project manager visited the site to observe the "pump down" of recovery wells. The process involved a high volume pump with a hose that reached well into the groundwater table. Pumping proceeded at a high volume, and recovered several dozen gallons of water with emulsified product.

Robert Burgess

7/12/2017

Document, Report, or Work plan Review - other

DEC received the "Additional Site Characterization Work Plan" from Shannon & Wilson Geotechnical and Environmental Consultants, Inc.

Robert Burgess

7/12/2017

Document, Report, or Work plan Review - other

DEC received the Product Recovery System Installation and Startup report for April - June 2017 from Travis/Peterson environmental. The report documents the activities performed by Travis/Peterson to install and start operations for the automated product recovery system.

Robert Burgess

7/31/2017

Document, Report, or Work plan Review - other

DEC provided comments to the "Additional Site Characterization Work Plan" submitted by Shannon & Wilson. Comments were minor but revisions were requested for clarity.

Robert Burgess

8/7/2017

Site Characterization Workplan Approved

DEC received, reviewed, and approved a revised Additional Site Characterization Work Plan.

Robert Burgess

8/29/2017

Site Characterization Workplan Approved

Work plan addendum approved. The addendum describes installation of additional borings and temporary well points in order to complete product delineation on site and start collecting information about the dissolved groundwater plume near the area of product contamination.

Janice Wiegers

10/3/2017

Update or Other Action

DEC sent a letter to Petro Star noting that monthly recovery reports have not been received, and requesting a summary report documenting product recovery system operation covering the period beginning on June 14 through the week prior to report submittal. A deadline of November 17, 2017 was included in the request. DEC also provided approval to shut down the automated recovery system to avoid freezing of lines and skimmers, as winter is coming.

Robert Burgess

10/23/2017

Document, Report, or Work plan Review - other

DEC reviewed and approved the Monitoring Well Installation Work Plan Addendum with the condition that Petro Star agrees to sample the soil boring intervals with the highest field screening reading using a photoionization detector (PID), when PID readings exceed 20 ppmv, in addition to taking a sample from the base of each boring.

Robert Burgess

11/16/2017

Document, Report, or Work plan Review - other

DEC received the 2017 Product Recovery System Operations Summary from Shannon & Wilson. The report documents the operation and maintenance of the product recovery system during the 2017 field season, including dates of operation, amount of product recovered, and disposal of recovered product and incidentally recovered water.

Robert Burgess

11/20/2017

Document, Report, or Work plan Review - other

DEC reviewed and approved the Proposed Additional Product Recovery Wells work plan addendum. The addendum describes the installation of two additional wells to the north of MW17-17 in locations where site characterization efforts suggested that free product is expected to be located.

Robert Burgess

1/11/2018

Update or Other Action

DEC received the Product Recovery System Operations Work Plan Addendum and the Product Recovery Operations Update for December 2017 from Shannon & Wilson.

Robert Burgess

3/7/2018

Document, Report, or Work plan Review - other

DEC submitted comments to the Proposed Product Recovery System Operations Work Plan Addendum and requested a revised work plan by April 30, 2018.

Robert Burgess

4/26/2018

Document, Report, or Work plan Review - other

DEC received the Revised Product Recovery Operations Work Plan Addendum from Shannon & Wilson.

Robert Burgess

5/11/2018

Document, Report, or Work plan Review - other

DEC received the Well Decommissioning Work Plan from Shannon & Wilson, Inc. The work plan describes proposed methods for decommissioning 8 product recovery wells that are non-functional due to improper installation and lack of maintenance.

Robert Burgess

5/15/2018

Document, Report, or Work plan Review - other

DEC received the April 2018 Product Recovery Operations update, summarizing the manual product recovery operations that took place in the month of April.

Robert Burgess

5/31/2018

Document, Report, or Work plan Review - other

DEC received the Release Investigation Report from Shannon & Wilson. The report documents the advancement of six soil borings at the locations as close as possible to locations required by regulation in order to investigate whether a release occurred. A "sheen test" to determine whether soils may contain free product was also conducted. The report did not discuss conclusions regarding whether the suspected release was confirmed, though contaminants of concern were detected above cleanup levels in each boring, and sheen tests were positive.

Robert Burgess

10/1/2018

Document, Report, or Work plan Review - other

DEC received the June And July 2018 Product Recovery Operations Update, dated August 17, 2018. The report describes the manual product recovery from 2 wells and automated recovery from 8 wells during the months of June and July. Over 200 gallons of product were recovered over this time period.

Robert Burgess

10/2/2018

Document, Report, or Work plan Review - other

DEC received the Interim Site Characterization Report dated Aug. 8, 2018, and describing soil and groundwater sampling activities intended to further delineate the extent of soil contamination, free product, and dissolved phase contaminant plumes at the site. Results indicate that the free product plume extends to the north and southwest of the source area, based on the results of warm water sheen tests with soil samples. The dissolved phase plume is also not yet delineated; results from upgradient wells indicate a possible upgradient source of dissolved phase contaminants.

Robert Burgess

10/16/2018

Document, Report, or Work plan Review - other

DEC received the September 2018 Product Recovery Operations Update dated October 16, 2018. The report summarizes manual and automated product recovery for the month of September.

Robert Burgess

6/5/2019

Site Characterization Workplan Approved

DEC reviewed and approved the 2019 Site Characterization Work Plan, which describes the installation and sampling of additional soil borings, monitoring wells, and temporary well points to better define the extent of contamination in soil and groundwater.

Robert Burgess

7/23/2019

Document, Report, or Work plan Review - other

DEC received and reviewed the second quarter product recovery operations report. The report documents the recovery of free-phase petroleum for the second quarter of 2019 (April through June) using manual and automated recovery methods.

Robert Burgess

8/20/2019

Offsite Soil or Groundwater Disposal Approved

DEC approved the transport of approximately 350 gallons of water purged from groundwater wells and 1 drum of soil cuttings. Soil will be treated by thermal incineration at OIT, and groundwater will be transported to the Petro Star refinery and processed through the oil/water separator.

Robert Burgess

10/1/2019

Update or Other Action

DEC approved the seasonal shutdown of the automated product recovery system to avoid freezing lines because winter is coming.

Robert Burgess

11/13/2019

Document, Report, or Work plan Review - other

DEC received and reviewed the third quarter 2019 product recovery operations update report. The report documents the recovery of free-phase petroleum for the third quarter of 2019 (July through September) using manual and automated recovery methods.

Robert Burgess

1/7/2020

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 77626 Bulk Fuel ASTs & Dispenser.

Robert Burgess

3/18/2020

Document, Report, or Work plan Review - other

DEC received and reviewed the 2019 Site Characterization Report. The report documents the installation of several borings, monitoring wells, and temporary well points to better define the extent of soil and groundwater contamination and LNAPL (free product). The report states that the extent of free product is now defined, but additional delineation of the groundwater plume is necessary. The DEC provided comments to the report and requested a revised final report be submitted in late April.

Robert Burgess

6/16/2020

Document, Report, or Work plan Review - other

The DEC received the Revised 2019 SIte Characterization Report and responses to comments. One comment from DEC was agreement with a recommendation from the consultant for additional delineation of the northwest boundary of groundwater contamination. The consultants removed this request from the revised report due to the potential for an additional contaminant source on Young's Gear property, based on historical monitoring results that indicate higher concentrations on the downgradient property compared to those found during investigations at this site.

Robert Burgess

1/11/2021

Document, Report, or Work plan Review - other

DEC received the 2020 Product Recovery Operations Update from Shannon & Wilson. The report summarizes the product automated and manual product recovery operations that took place in 2020. The report notes that the amount of product recovered is less than previous years, which may indicate that the total amount of recoverable product is decreasing.

Robert Burgess

5/6/2022

Document, Report, or Work plan Review - other

DEC reviewed the 2021 Site Characterization Report. The report documents results from sampling existing monitoring wells in addition to temporary well points on upgradient properties. Upgradient well points did not contain petroleum contaminants. The report also documents the presence of vinyl chloride above groundwater cleanup levels and detections of tetrachloroethene (PCE) and trichloroethene (TCE) below cleanup levels. Vinyl chloride was detected in upgradient well point samples, which may indicate an off-site source. The report recommends continued monitoring and a baildown test to evaluate whether additional product recovery is practicable.

Robert Burgess

Contaminant Information

Name

Level Description

Media

Comments

Control Type

Type

Details

Requirements

Description

Details

Aug. 2018 Interim Site Characterization Report

No associated sites were found.

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Alaska Department of Environmental Conservation

Site Report: Sourdough Fuel/Tanana Petroleum Inc. Bulk Fuel

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Aug. 2018 Interim Site Characterization Report

Missing Location Data

State of Alaska Department of Environmental Conservation