Site Report: ConocoPhillips Gwydyr Bay 2/2A
| Site Name: | ConocoPhillips Gwydyr Bay 2/2A |
|---|---|
| Address: | ~16 Miles NW of Deadhorse, Deadhorse, AK 99734 |
| File Number: | 300.38.316 |
| Hazard ID: | 26368 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 70.408555 |
| Longitude: | -148.753091 |
| Horizontal Datum: | WGS84 |
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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.
Problems/Comments
Phase II Site Assessment results include gasoline range organics and diesel range organics (with silica gel cleanup) above DEC Method One criteria in the gravel pad. Surface water samples results collected from five locations on the southern and eastern sides of the gravel pad did not exceed water quality criteria although a sheen was observed at two of these locations when a shovel was used to disturb sediments. At least 21 other locations did not produce a sheen.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 7/10/2014 | Document, Report, or Work plan Review - other | Date of receipt for Phase I/II Site Assessment Work Plan prepared by Weston on behalf of ConocoPhilips. | Keather McLoone |
| 2/19/2015 | Document, Report, or Work plan Review - other | Date of receipt of Gwydyr Bay 2/2A Former Exploration Site, Phase II Site Assessment Results. 17 locations within the pad were sampled and analyzed for GRO, DRO/RRO (with and without silica gel), BTEX and 10 percent PAHs. Five surface water locations were sampled and shovel sheen tests were performed in all surface water bodies and themokarst troughs within 100 feet of the pad. Three surface soil locations off the pad were sampled for indicators of salt impacts. GRO up to 612 mg/kg and DRO up to 2,880 mg/kg. | Keather McLoone |
| 3/23/2015 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 3/24/2015 | Potentially Responsible Party/State Interest Letter | Keather McLoone | |
| 3/24/2015 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 79752 name: ConocoPhillips Gwydyr Bay 2/2A | Keather McLoone |
| 5/12/2015 | Document, Report, or Work plan Review - other | Date of Gwydyr Bay 2/2A Former Exploration Site, Site Visit and Visual Monitoring Plan. During the summer of 2015 or 2016, a site visit and visual monitoring will be conducted at Gwydyr Bay. If an undisturbed sheen is observed, a surface water sample will be collected and analyzed for DRO (with and without silica gel cleanup), BTEX and PAHs. Also the coastline will be visited to look for evidence of erosion, staining, or other impacts. | Keather McLoone |
| 12/2/2015 | Document, Report, or Work plan Review - other | Date of document entitled Gwydyr Bay 2/2A Former Exploration Site, Site Visit and Visual Monitoring. In response to ADEC's request to follow up on previously reported sheen at this site, Weston conducted a site visit and did not observe any hydrocarbon sheen and no sheen was observed at the two ponds where a sheen was previously observed. | Keather McLoone |
| 11/18/2016 | Cleanup Complete Determination Issued | 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 no further remedial action will be required unless new information becomes available that indicates residual contaminants may pose an unacceptable risk. | Joshua Barsis |
| 11/18/2016 | Exposure Tracking Model Ranking | A new updated ranking with ETM has been completed for source area 79752 ConocoPhillips Gwydyr Bay 2/2A . | Joshua Barsis |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| GRO | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil | |
| DRO | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil |
Control Type
| Type | Details |
|---|---|
| No ICs Required |
Requirements
| Description | Details |
|---|---|
| Advance approval required to transport soil or groundwater off-site. | |
| Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70) |
No associated sites were found.