| Action Date |
Action |
Description |
DEC Staff |
| 8/12/1998 |
Update or Other Action |
Site characterization report received by CS staff. |
Renee Evans |
| 8/13/1998 |
Interim Removal Action Approved |
Removal of 620 cubic yards of hydrocarbon impacted soils approved for transport to OIT. |
Renee Evans |
| 8/20/1998 |
Update or Other Action |
Phone call to owner requesting workplan for contamination left in place. |
Renee Evans |
| 11/24/1999 |
Site Added to Database |
Petroleum. |
Renee Evans |
| 11/30/1999 |
Site Ranked Using the AHRM |
Site ranked in database. |
Renee Evans |
| 7/10/2002 |
GIS Position Updated |
Changed the Latitude, Longitude, Method Accuracy, Accuracy and Unit fields. |
Heather Goldman |
| 8/4/2005 |
GIS Position Updated |
Double checked location due to inclusion into potential Brownfields list. Updated accuracy and datum. |
Torsten Ernst |
| 4/14/2008 |
Update or Other Action |
Sent letter to RP (Flowline Alaska) requesting status of the property and need for groundwater assessment based on soil data collected in 1996. |
Tamara Cardona-Marek |
| 4/14/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Tamara Cardona-Marek |
| 4/22/2008 |
Update or Other Action |
Contacted by David Nyman from Restoration Science and Engineering for a copy of the Flowline file. |
Tamara Cardona-Marek |
| 1/16/2009 |
Update or Other Action |
Sent letter to RP (second notice) requesting the current status of the contamination on site and (possibly) additional site assessment. |
Tamara Cardona-Marek |
| 4/7/2009 |
Update or Other Action |
Discussed with RP proposal from consultant. Consultant (TPECI) will submit a workplan for site characterization. |
Tamara Cardona-Marek |
| 5/29/2009 |
Site Characterization Workplan Approved |
After revisions and modifications, work plan for site investigation submitted by Travis/peterson for Flowline Alaska, was approved by ADEC. Installation of push point wells will occur on 6/8/2009. |
Tamara Cardona-Marek |
| 8/7/2009 |
Update or Other Action |
DEC received the TPECI report titled "Groundwater Release Investigation". Samples collected from four monitoring wells indicate contamination with GRO, DRO and BTEX is above cleanup levels in at least one monitoring well. All wells have DRO and GRO above cleanup levels.
Additional investigation to determine the source of the contamination is neeeded. |
Tamara Cardona-Marek |
| 11/6/2009 |
Document, Report, or Work plan Review - other |
DEC received from TPECI the Groundwater Release Investigation. 6 additional direct push wells were installed, two of these wells had benzene DRO and GRO above cleanup levels. Wells surrounding the suspected source area have GRO, DRO and VOC levels above cleanup (MW-1, MW-2, MW-3, MW-4, MW-5 and MW-8). Boundaries of the plume to the north, south and west have not been identified. Additional investigation is needed to determine the lateral and vertical extent of the contamination in soil and groundwater. Source of the contamination must be identified and a remediation/ treatment technique proposed. |
Tamara Cardona-Marek |
| 11/6/2009 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 73622 two 10K gal heating oil UST. |
Tamara Cardona-Marek |
| 5/11/2010 |
Update or Other Action |
Received from consultant the product recovery log for the period of 10/09 through 12/09. 37 gallons of product were recovered during this period by Flowline. |
Tamara Cardona-Marek |
| 5/26/2010 |
Update or Other Action |
DEC requested that Flowline sample for sulfolane one well within the source area to determine if sulfolane may be a COC. |
Tamara Cardona-Marek |
| 7/8/2011 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the Site Characterization Work Plan submitted by TPECI. A phased approach is proposed in which TPECI will use Gore Sorb to determine the location of soil borings and monitoring wells. DEC submitted comments to the work plan and is awaiting revisions. |
Tamara Cardona-Marek |
| 8/10/2011 |
Site Characterization Workplan Approved |
DEC approved work plan for site characterization. Work will include screening with passive soil gas sampling modules (Gore Sorb) and installation of monitoring wells. |
Tamara Cardona-Marek |
| 9/28/2011 |
Site Visit |
DEC did a site visit while consultant installed soil gas probes at site. |
Tamara Cardona-Marek |
| 12/19/2011 |
Document, Report, or Work plan Review - other |
Received Gore Sorber Screening Report |
Tamara Cardona-Marek |
| 12/10/2012 |
Offsite Soil or Groundwater Disposal Approved |
DEC approved treatment of purgewater with hydrogen peroxide. However, post treatment analysis indicated that DRO was above cleanup levels , therefore, approval for transport to OIT was granted. |
Tamara Cardona-Marek |
| 12/4/2013 |
Update or Other Action |
Site symbol visually adjusted using ArcGIS, Bing Satellite imagery and documents from file. 64.846170, -147.757265. 12/04/13; MLB. |
Michelle Barnes |
| 12/5/2013 |
Update or Other Action |
Sent letter to RP requesting the current status of remaining tasks at the site. |
Willett Boger |
| 1/29/2014 |
Update or Other Action |
Site transferred from Boger to Dieffenbacher. |
Rebecca Bryan |
| 7/31/2014 |
Update or Other Action |
Staff changed from Amy Dieffenbacher to Melody Debenham. |
Kristin Thompson |
| 9/2/2015 |
Update or Other Action |
Sent letter requesting status update. |
Melody Debenham |
| 1/19/2016 |
Update or Other Action |
Received documentation of product recovery from 2009 to 2012. Approximately 325 pounds of product was recovered from MW-1. Three 55-gallon drums of product/water were taken to OIT for disposal in 2012. No product was observed in MW-1 in 2014 or 2015. Product recovery is no longer effective at this site. |
Melody Debenham |
| 10/5/2016 |
Document, Report, or Work plan Review - other |
Approved amendments to 2011 site characterization work plan that include installing 5 soil borings/temporary well points and groundwater sampling of existing wells. Work is scheduled for May/June 2017. |
Melody Debenham |
| 9/13/2017 |
Update or Other Action |
Approval to postpone the installation of borings and wells until the spring/summer 2018 due to logistical restraints. Groundwater samples from the existing wells will still be collected September 2017 and existing wells will be surveyed and calculated for groundwater gradient per the approved work plan. |
Gretchen Caudill |
| 1/8/2018 |
Document, Report, or Work plan Review - other |
DEC comments provided - 2017 Flowline Alaska Groundwater Monitoring Report. This report details the continued presence of contamination in groundwater on site. In addition, DEC has recommended a reevaluation of the long-term strategy for the site and adequate planning going forward. This site appears to still contain an active source that is contributing to high, and in some cases, increasing concentrations of contaminants in groundwater. As regulations and cleanup levels have changed since the 2011 Work Plan and as this site has been active for over 20 years and is yet to be fully characterized, DEC would recommend a new 2018 Work Plan be prepared with the goal of clearly outlining a plan for full site characterization in soil and groundwater that could guide cleanup activities and ultimately result in closure of the site. |
Gretchen Caudill |
| 3/2/2018 |
Update or Other Action |
Additional DEC Comments provided re: identifying data gaps with the site and 2017 GW Report |
Gretchen Caudill |
| 6/29/2018 |
Update or Other Action |
Request for Update - DEC requested an update on the following:
1. Comment resolution is required to finalize the 2017 Groundwater Monitoring Report,
2. Status of the planned 2018 work schedule, and
3. Details should be provided outlining Flowline Alaska’s plan to address the data gaps identified. |
Gretchen Caudill |
| 3/6/2019 |
Update or Other Action |
Requested update
|
Gretchen Caudill |
| 5/9/2019 |
Document, Report, or Work plan Review - other |
DEC provided significant comment on 2018 Site Characterization Report Version 1.0. This report details the soil sampling, temporary well sampling, and established monitoring well sampling at the site. No soil contamination was found in samples taken west and north of the historic tank source area and a general east and west plume boundary has been potentially identified. However, petroleum contamination in groundwater remains at significant concentrations, in some cases over 100 times DEC cleanup levels. DEC has concerns regarding the significant data gaps and extended timeframe for full
characterization at this site and has requested a meeting with the RP. |
Gretchen Caudill |
| 6/3/2019 |
Meeting or Teleconference Held |
Meeting with contractor, Flowline ownership, and DEC to discuss site progression and next steps for site. Next steps agreed to include: robust site history development, CSM, a groundwater flow study, and to dispose of IDW generated from field work last fall. |
Gretchen Caudill |
| 6/17/2019 |
Document, Report, or Work plan Review - other |
DEC approved the Groundwater Gradient Determination Work Plan. This work plan details the installation of four monitoring well data loggers that will measure daily water pressure to provide groundwater elevations in the vicinity of the Alaska Flowline contaminated site. This data will aid in understanding the localized groundwater flow and seasonal fluctuations. DEC concurs that this field effort will provide useful information and has no objection to the outlined work plan to determine groundwater gradient at the site, however, as discussed on a phone call June 7, 2019 with the RP, this field effort is not a requirement of DEC as a sufficient understanding of localized groundwater gradient could likely be ascertained through published literature and adjacent site work reporting. Comment resolution on the 2018 GW Monitoring Report (and 2017) is still pending. |
Gretchen Caudill |
| 10/14/2021 |
Offsite Soil or Groundwater Disposal Approved |
DEC approved request to transport one drum of petroleum contaminated soil generated in 2018 to US Ecology for thermal treatment. |
Rebekah Reams |
| 1/4/2022 |
Document, Report, or Work plan Review - other |
DEC provided comments on Version 2 of the 2018 Site Characterization Report and the 4/12/2021 Letter Response with vapor intrusion evaluation submitted to DEC on August 31, 2021. |
Rebekah Reams |
| 10/7/2022 |
Document, Report, or Work plan Review - other |
DEC provided comments on the Sampling and Analysis Plan. This work plan proposes to complete three groundwater monitoring events, install an additional well to define the southern extent of the groundwater plume, and complete Section 1 of the DEC Building Survey and Indoor Air Sampling Questionnaire for the Office/Elbow Shop to evaluate vapor intrusion concerns. |
Rebekah Reams |
| 9/8/2023 |
Workplan Requested |
DEC sent correspondence requesting a revised Sampling and Analysis Plan for Flowline Alaska and response to DEC October 7, 2022 correspondence be submitted by a deadline of October 9, 2023. |
Rebekah Reams |
| 7/26/2024 |
Update or Other Action |
DEC approved the Simplified Screening and Soil Management Plan for the Flowline Alaska Shop Building. This document outlines plans to manage potentially contaminated soil generated during the construction of a building addition at the site, and to collect confirmation samples from the limits of the excavation. |
Rebekah Reams |
| 10/10/2024 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approved transport of 450 cubic yards of contaminated soil generated during construction activities conducted at the site. |
Rebekah Reams |
