Site Report: ARCO Geofoam Pad
| Site Name: | ARCO Geofoam Pad |
|---|---|
| Address: | DS12 Access Road, Intersection with East Lake Colleen Drive, Deadhorse, AK 99734 |
| File Number: | 300.38.016 |
| Hazard ID: | 1747 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 70.212660 |
| Longitude: | -148.434527 |
| 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
Petroleum Hydrocarbon Contamination found on site. Some gravel was excavated and thermally treated. Some Contamination underneath the building were allowed to remain in place. TPH up to 20,000 ppm and BTEX up to 175 ppm remain on site. Five-year monitoring program started in 1993. DNR Deadhorse Lease Tract 66A. East side of Colleen Lake. Last staff assigned was Sundet.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 1/9/1992 | Site Characterization Report Approved | (Old R:Base Action Code = SI - Site Investigation). Site Investigation report received and approved by the department. | Mehrdad Nadem |
| 7/14/1992 | Update or Other Action | (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Excavation sampling and analysis plan was submitted to the department AFTER completion of the project. Some "hot" areas (> 500 ppm DRO) were left in place. | Mehrdad Nadem |
| 10/28/1992 | Site Added to Database | Petroleum hydrocarbon contamination. | Former Staff |
| 11/2/1992 | Update or Other Action | (Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Remediation and Monitoring Report for the Geofoam pad was received by the department on 12/10/92. 450 yards were excavated and thermally remediated. A 24 inch product recovery sump was installed inside the building. The sump will be routinely monitored and drawn-down. Fluids will be disposed of at the Pad 3 well. | Mehrdad Nadem |
| 1/18/1994 | Update or Other Action | Monitoring report received for 1993. This is the first of five years of scheduled monitoring. No monitoring well samples collected due to lack of water or ice buildup. Sheen noted on snowmelt ponds off the NE corner of the pad on June 19, 1993. A visible sheen was also noted here in 1990. | Scott Rose |
| 1/17/1995 | Update or Other Action | Received report of 1994 site monitoring program. This is 2nd year of five year monitoring program. Three temperature piezometers and two monitoring wells were installed. Pore water sampled and analyzed for BTEX and DRO. DRO found in MW1 and MW4 at 5.5 mg/kg and 1.0 mg/kg respectively. High DRO and BTEX still found in sump water. | Scott Rose |
| 4/21/1998 | Site Ranked Using the AHRM | Ranking action added now because it was not added when the site was originally ranked. | Bill Petrik |
| 5/2/2003 | Conditional Closure Approved | A decision to issue NFRAP for this site was based on impacted soil was excavated - except for beneath building and concrete floor. Pore water is discontinuous and not considered risk to transport contamination. | Jim Frechione |
| 5/2/2003 | Institutional Control Record Established | Characterize soil and pore water beneath the building when it becomes accessible. | Jim Frechione |
| 4/3/2012 | Institutional Control Compliance Review | This site meets the 2009 closure policy, therefore ICs can be removed. | Evonne Reese |
| 5/15/2012 | Institutional Control Record Removed | This site meets the 2009 closure policy, therefore ICs can be removed. The default requirement of no offsite transport of soil/groundwater is still applicable. | Evonne Reese |
| 11/5/2014 | Update or Other Action | Project manager name changed from IC Unit to Keather McLoone. | Evonne Reese |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | > Method 1 (Arctic only) | Soil |
Control Type
| Type | Details |
|---|---|
| No ICs Required |
Requirements
| Description | Details |
|---|---|
| Advance approval required to transport soil or groundwater off-site. |
No associated sites were found.