| Action Date |
Action |
Description |
DEC Staff |
| 4/1/2004 |
Site Characterization Report Approved |
2003 T Pad monitoring report received. Seven sediment samples were collected from an area where sheen was noted during a 2002 inspection. Low levels of toluene and xylenes were found in three of the samples and sheen was noted in one area where it had been observed previously. Interpretation of data and visual observations indicates a discrete area of significantly weathered diesel contamination. |
Bill O'Connell |
| 6/15/2006 |
Site Added to Database |
Site added to the database. |
Bill Petrik |
| 6/15/2006 |
GIS Position Updated |
Coordinates taken from Figure 1, "Prudhoe Bay Unit T Pad Surface Water Sample Locations Vicinity Map" of the BPXA "2002 Water Quality Monitoring Report for T-Pad Solid Storage Area" sent to ADEC on 9/10/02. Coordinates are for the centroid of the pad. The report coordinates were updated from NAD 27 to NAD 83/WGS 84 using TopoZone Pro. No other metadata supplied. Unable to verify accuracy of the coordinates but they appear to be reasonable. |
Bill Petrik |
| 6/15/2006 |
Site Ranked Using the AHRM |
Initial ranking. |
Bill Petrik |
| 9/10/2009 |
Site Visit |
Site visit on 9/1/09. Sheen was visible when sediment was disturbed in the area of concern west of the pad. Areas of the pad are apparently used for fire training excercises, however impacts to the pad from these activities are unknown. |
Bill O'Connell |
| 4/30/2013 |
Cleanup Complete Determination Issued |
The Alaska Department of Environmental Conservation, Contaminated Sites Program (ADEC) has completed a review of the environmental records associated with BPX T Pad, located north of Spine Road in Prudhoe Bay, Alaska. Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and this site will be closed. |
Bill O'Connell |
| 9/18/2018 |
Workplan Requested |
Sent letter on this day requesting evaluation of PFAS at this site. |
Joshua Barsis |
| 4/8/2019 |
Document, Report, or Work plan Review - other |
Reviewed the work plan dated April 2, 2019 and titled T Pad 2019 Fire Training Ground PFAS Investigation Work Plan. Proposed activities consist of installing up to 7 soil borings around the liner at T Pad, completing the borings as monitoring wells, collecting 3 soil samples from each boring, and 1 water sample from each well. Additionally, one 5-point composite soil sample will be collected from the area within the subsurface liner for the specific purpose of future waste characterization. Soil and water samples will be submitted for laboratory analysis of one or more of the following: PFAS, GRO, DRO BTEX, VOCs, and/or PAHs. |
Joshua Barsis |
| 10/21/2024 |
Site Reopened |
Site reopened due to an additional source area discovered along with new contaminants of concern. |
Evonne Reese |
| 11/12/2024 |
Workplan Requested |
DEC has requested further work to determine the extent of hazardous substance contamination at the fire training ground. PFAS remains within the surface waters to the north and west of the pad, and within the pad porewater but the vertical and horizontal extent has not been characterized completely. A request for a work plan has been sent and is requesting a work plan to be submitted to the department by December 13, 2024. |
Laura Jacobs |
| 2/11/2025 |
Document, Report, or Work plan Review - other |
A proposed work plan was submitted to DEC on December 12, 2024 for site characterization efforts. Proposed activities consist of installing three soil boreholes on the western, northern, and eastern boundaries of the gravel pad and completing the borings as monitoring wells, collecting 1 water sample from each monitoring well. Additionally, pad porewater samples will be collected from a fourth location, and surface water samples will be collected from three locations. Surface water and pad porewater samples will be analyzed for per- and poly fluoroalkyl substances, and field parameters. DEC has asked that surface and pad porewater samples be analyzed for gasoline-range organics (GRO), diesel range organics (DRO), benzene, toluene, ethylbenzene, and total xylenes (BTEX), and include PAHs in surface water samples. And, that one soil sample per each soil boring be collected for the above-listed COC’s including polycyclic aromatic hydrocarbons (PAHs), and volatile organic carbons (VOCs).
|
Laura Jacobs |
| 8/5/2025 |
Site Characterization Workplan Approved |
Revised FINAL 2025 Contaminated Site Proposed Work Plan; BPX T Pad fire Training Ground was approved for site characterization work at the BPX T Pad site. The proposed effort includes installing three soil borings to the west, north and east of the pad boundaries, with one soil sample per boring. Samples will be analyzed for gasoline range organics (GRO), diesel range organics (DRO), polycyclic aromatic hydrocarbons (PAHs), and volatile organic carbons (VOCs). Borings will be completed as monitoring wells and sampled with four other locations for GRO, DRO, PAH, benzene, toluene, ethylbenzene, and xylenes (BTEX), and per- and poly-fluoroalkyl substances (PFAs). In addition, three surface water samples will be collected and analyzed for PAHs, BTEX, and PFAs. |
Laura Jacobs |
