| Action Date |
Action |
Description |
DEC Staff |
| 8/4/2010 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PERP staff John Ebel. Spill no. 09399925802; spill date = 9/15/09; substance = crude oil; quantity = unknown. |
Mitzi Read |
| 8/9/2010 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 8/9/2010 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 78931 name: BPX D Pad Impoundment |
Mitzi Read |
| 8/20/2010 |
Update or Other Action |
DEC letter to BP on this date requesting investigation to determine whether the contamination is associated with the reserve pit and defining nature and extent. |
Keather McLoone |
| 6/7/2013 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78931 BPX D Pad Impoundment. |
Bill O'Connell |
| 6/26/2014 |
Meeting or Teleconference Held |
During meeting today with BP and ERM, this site was mentioned by DEC. |
Keather McLoone |
| 6/30/2014 |
Potentially Responsible Party/State Interest Letter |
PRP letter also requested that BP conduct visual monitoring until the reserve pit is closed, then the characterization and delineation requested in our 2010 letter would be appropriate. |
Keather McLoone |
| 9/4/2014 |
Site Visit |
|
Keather McLoone |
| 7/29/2015 |
Document, Report, or Work plan Review - other |
Date on Transmittal of the 2015 Contaminated Sites Water Quality Monitoring Workplan for D Pad, Service City, COTU North, COTU South, BOC Bulk Fuel Facility Utilidor, DSM Shop, PBOC Generator, MCC Fuel Island. As of 10/15/15 an approval letter hadn't been sent because ERM/BP had not yet provided the 2014 COTU South report although it has been reportedly just about ready for 2 months. |
Keather McLoone |
| 10/12/2015 |
Document, Report, or Work plan Review - other |
Date of receipt of 2014 D Pad Hydrologic Study Report. This action will also be entered under the D Pad site that is Cleanup Complete with Institutional Controls. Activities performed in 2014 included pressure transducer installation, thermistor data logger battery maintenance and downloading, surface and pad porewater level gauging, transducer and thermistor data logger removal, permafrost probing and top-of-casing survey. Sheen monitoring was also conducted but is reported under separate cover although this document states that there was no sheen observed. The objectives of the hydro study are to understand seasonality and pad porewater movement. Conclusions include a reiteration of those in 2012 regarding little pore-water flux, max thaw in September with water levels generally decreasing as the thaw season progressed, and discussion of gradients. Recommendations section does not recommend additional hydrologic studies but further discusses flow reversal near pad edge. |
Keather McLoone |
| 8/28/2018 |
Update or Other Action |
A site visit was completed by DEC and BPXA on August 28, 2018. Spontaneous sheen was observed near the northeast corner of the impoundment. Stained gravel was apparent along the western shoreline of the impoundment berm. |
Joshua Barsis |
| 5/28/2019 |
Document, Report, or Work plan Review - other |
Reviewed the D Pad Impoundment and Well 5 2019 Contaminated Sites Monitoring Work Plan, dated May 23, 2019. The work plan details planned activities at two sites: the BPX D Pad Impoundment site (Hazard ID 255543) and the BPX D Pad Well 5 site (Hazard ID 27078).
The 2019 planned activities include: a visual inspection and shovel sheen testing around the perimeter of the impoundment and the reserve pit adjacent to Well 5; collection of three surface water samples; and collection of water samples from six existing monitoring wells (from the old hydrology study).
|
Joshua Barsis |
| 8/15/2020 |
Document, Report, or Work plan Review - other |
D Pad Well and D Pad Impoundment – Combined 2019 Contaminated Sites Monitoring Report and Work Plan Considerations |
Andrea Carlson |
| 7/22/2021 |
Document, Report, or Work plan Review - other |
D Pad Well and D Pad Impoundment Combined – 2020 Contaminated Sites Monitoring Report and 2021 Work Plan – Dated July 22, 2021 |
Andrea Carlson |
| 11/14/2023 |
Document, Report, or Work plan Review - other |
Reviewed the 2022 Contaminated Site Monitoring Report and Proposed Work Plan, dated March 7, 2023. The report combines site work from two contaminated sites located on the D-Pad including the D Pad Impoundment (300.38.291) and the D Pad Well 5 site (300.38.324).
The report details site history and porewater sampling conducted in July 2022. Monitoring activities included sampling two monitoring wells (MW-14 and MW-40) and submitting the samples for laboratory analysis of gasoline range organics (GRO), diesel range organics (DRO), benzene, toluene, ethylbenzene, and total xylenes (BTEX), and poly-cyclic aromatic hydrocarbons (PAHs). Both wells had detected DRO and benzene concentrations that exceed their respective DEC Table C. Groundwater Cleanup Levels (CULs). One of the wells (MW-14) also had ethylbenzene and naphthalene with reported concentrations above the groundwater CULs. The D-Pad Impoundment was visually inspected for sheen; however, none was observed during the time of the site visit.
The report workplan recommends continuing the biennial sampling until the next sample in 2024, then combining the sampling event with the D-Pad North (File No. 300.38.158) sampling events which are done on a five-year sampling schedule.
It also recommends discontinuing the PAH analysis due to stable trends and the proximity of the porewater wells to surface water which is greater than 200 feet away.
The workplan proposes continuing biennial sheen observations at the D-Pad Impoundment and collection of a surface water sample if sheen is observed.
|
Andrea Carlson |
