| Action Date |
Action |
Description |
DEC Staff |
| 6/1/2007 |
Site Added to Database |
Site added to the database. |
Mitzi Read |
| 9/21/2010 |
Site Visit |
Site visit with BPXA and consultant |
Bill O'Connell |
| 11/8/2010 |
Document, Report, or Work plan Review - other |
Reviewed Put River 19-10-15 Phase II Site Assessment and Corrective Action Plan. Remediation work at the gravel pad will be deferred to pad abandonment as this site is in Deadhorse and is used by BP Tool Services as a storage pad. The Phase II investigation was conducted in 2007. 27 boreholes were advanced and sampled at the gravel pad and 5 boreholes were advanced in the tundra surrounding the pad. DRO was detected in gravel pad samples up to 1,960 mg/kg and in tundra samples up to 263 mg/kg. Corrective Action at the gravel pad, when implemented, will include removal of the entire pad, landfarming approximately 15,900 cy of restricted use and contaminated tundra and gravel, then rehabilitation of the former site. Clean gravel will be staged offsite for reuse.
Additional impacted gravel with DRO up to 3,060 mg/kg was found in the gravel cap currently in place at the Western Reserve Pit. Due to the lack of drilling waste in this gravel (approximately 8,500 cy), it will not be treated as reserve pit waste and will instead be removed and treated at the East Dock Landfarm. |
Bill O'Connell |
| 7/23/2012 |
Site Visit |
Site visit today. Pad is still in use for material storage. |
Bill O'Connell |
| 9/3/2013 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 75408 name: auto-generated pm edit BPX Put River 19-10-15 |
Bill O'Connell |
| 10/16/2015 |
Update or Other Action |
Letter sent on this date requesting the BP include this site in its 2016 field activities and submit a workplan. |
Keather McLoone |
| 10/16/2015 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 75408 auto-generated pm edit BPX Put River 19-10-15. |
Keather McLoone |
| 8/9/2016 |
Document, Report, or Work plan Review - other |
Reviewed the 2016 Contaminated Sites Soil & Water Quality Monitoring Work Plan, dated August 2016. Proposed activities mainly consist of monitoring well sampling, surface water sampling, and surface soil sampling. |
Joshua Barsis |
| 2/13/2017 |
Document, Report, or Work plan Review - other |
Reviewed the 2016 Contaminated Sites Monitoring Report, dated February 2017 for the BPX Put River 19-10-15 site. The described field effort was completed on August 18, 2016 and included a visual inspection of surface water, as well as analytical sampling completed at six surface water locations and five surface soil locations. The soil samples were generally co-located with the surface water samples, however, one planned surface soil location could not be sampled because the area was completely submerged.
All soil and water samples were submitted for laboratory analysis of gasoline range organics (GRO), diesel range organics (DRO), polycyclic aromatic hydrocarbons (PAHs), and benzene, toluene, ethylbenzene, and xylenes (BTEX). None of the results for soil or water exceeded applicable state cleanup levels or Alaska Water Quality Standards (AWQS) criteria; although petroleum sheening was observed at two sample locations SW-18 and SW-19, following soil disturbance.
Final 2016 Contaminated Sites Monitoring Report, dated June 2017 was received on July 31, 2017. |
Joshua Barsis |
| 4/3/2018 |
Document, Report, or Work plan Review - other |
Reviewed the 2018 Biennial Contaminated Sites Work Plan for Put River 19-10-15, dated February 2018. The proposed effort mainly consists of visual and physical (25 feet intervals) sheen inspections of surface water. If petrogenic sheens are observed, up to two surface water samples will be collected from the heaviest appearing sheens and submitted for analysis of BTEX and PAHs. Final version of work plan received on April 4, 2018 (document is dated Feb 2018). |
Joshua Barsis |
| 4/22/2019 |
Document, Report, or Work plan Review - other |
Reviewed of the Put River 19-10-15 2018 Contaminated Sites Monitoring Report, dated April 19, 2019. Completed activities included a visual inspection of surface water, followed by shovel sheen testing in 25 feet intervals. Petroleum sheens were observed at seven locations after physical disturbance; two of which (Samples SW-23 and SW-24) surface water samples were collected. Samples were submitted for laboratory analysis of polycyclic aromatic hydrocarbons (PAHs) and benzene, toluene, ethylbAenzene, and xylenes (BTEX). None of the results exceeded the Alaska Water Quality Standards (AWQS) criteria or total aromatic hydrocarbons (TAH) or total aqueous hydrocarbons (TAqH).
As suggested in the report, ADEC will complete a file review to determine if this site is eligible for a cleanup completed determination, and whether or not institutional controls are necessary.
|
Joshua Barsis |
| 3/28/2020 |
Cleanup Complete Determination Issued |
Cleanup complete determination issued 3/31/2020 |
Joshua Barsis |
| 3/28/2020 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 75408 auto-generated pm edit BPX Put River 19-10-15. |
Joshua Barsis |
