Site Report: Eklutna Power Plant
| Site Name: | Eklutna Power Plant |
|---|---|
| Address: | Mile 4 Old Glenn Highway, Palmer, AK 99645 |
| File Number: | 2108.38.002 |
| Hazard ID: | 2054 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 61.475293 |
| Longitude: | -149.151100 |
| Horizontal Datum: | NAD83 |
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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
Release of dielectric mineral transformer oils for an unknown amount of time. Residual range petroleum hydrocarbons ranging from 14,800 ppm on the surface to 5,360 ppm at 2' below land surface. Leaks stopped and catchment buckets in place if needed. Deeper sampling prohibitive due to affecting structural integrity of transformers. Very low likelihood of affecting drinking water wells (>0.5 miles to nearest), wetlands, or surface water sources. Last staff assigned was Krieber (2/12/97). Depth to groundwater unknown. No remedial technology currently in use. Due to low toxicity of mineral oil, separation distance to groundwater from lowest point of contamination and lack of contaminant migration, the Eklutna Power Plant was given Site Closure status.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 10/26/1994 | Update or Other Action | (Old R:Base Action Code = RPL1 - Initiate Dialog with RP). | Mike Krieber |
| 12/1/1994 | Update or Other Action | (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). | Mike Krieber |
| 12/1/1994 | Update or Other Action | (Old R:Base Action Code = RPL2 - Site Information Request Letter). Need to determine the vertical extent of the contamination. | Mike Krieber |
| 2/16/1995 | Update or Other Action | CS DB Manager updated Problem Statement and Comments fields from correspondence. | Mike Krieber |
| 2/28/1995 | Preliminary Assessment Approved | (Old R:Base Action Code = SA1R - Phase I SA Review (CS/LUST)). No PCBs found although TPH in varying levels to 40'. TPH >2,000 ppm limited to less than 10'. | Mike Krieber |
| 2/28/1995 | Update or Other Action | (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Remediation plan is approved with the condition to allow for a 5' excavation along the back half of the bays unless analytical results are less than 2,000 ppm at shallower depths. | Mike Krieber |
| 4/6/1995 | Site Added to Database | Site added to database. | Mike Krieber |
| 4/28/1995 | Update or Other Action | (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). The Department has completed an expedited in-situ remediation plan review due to construction timing constraints. | Mike Krieber |
| 5/11/1995 | Update or Other Action | (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Expedited review of an in-situ remediation system plan. | Mike Krieber |
| 6/20/1995 | Update or Other Action | (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Soil treatment plan review and approval for 175 cubic yards. | Mike Krieber |
| 9/27/1995 | Update or Other Action | (Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Reviewed the Cleanup Progress Report and Sampling Plan as well as Post-Treatment Results. Only diesel range contamination will be tested. No further action is needed on the already excavated soil. | Mike Krieber |
| 5/10/1996 | Site Ranked Using the AHRM | Initial ranking performed by Shannon and Wilson. | S&W |
| 7/24/1996 | Cleanup Plan Approved | (Old R:Base Action Code = CAPA - Corrective Action Plan). Reviewed a cleanup monitoring report. | Mike Krieber |
| 10/17/1996 | Site Ranked Using the AHRM | Reviewed S&W ranking. Changed Quantity Value from 2.1 to 2, Population Density Value from 5 to 3, Population Proximity Value from 0.5 to 1, GW Exposure Index Value from 0.4 to 0, and SW Environments from 2 to 0. | Mike Krieber |
| 12/12/1999 | Update or Other Action | Reviewed report, DRO over 500 ppm at 15 feet below ground surface; requested depth to GW (not yet determined) and site characterization. EMCON is current consultant. | Jim Frechione |
| 3/12/2002 | Update or Other Action | Returned call to Scott Rose who wanted a status. Reminded him that site does not meet Method Two cleanup levels and cannot be closed as such. Still need information on depth to groundwater and any missing data before we can consider alternative cleanup levels. He will inform Chugach Electric. | Lynne Bush |
| 12/2/2002 | Site Characterization Workplan Approved | Approved the plan for additional characterization | Lynne Bush |
| 6/10/2003 | Site Closure Approved | No Further Action letter mailed to Carl Harmon. While elevated levels of mineral oil are still present in the subsurface, the toxicity level is very low and not considered a potential threat to human health, safety or the environment. A strata of silt and another of peat lie between the lowest level of contamination and the aquifer and should effectively retard migration of contamination to the groundwater. In addition, there is no evidence of hydrological connectivity to surface water. | Lynne Bush |
| 7/17/2003 | Update or Other Action | Monitoring well decommissioned on July 14, 2003. Site work, as prescribed by DEC, is complete. | Lynne Bush |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| For more information about this site, contact DEC at (907) 465-5390. |
Control Type
| Type | Details |
|---|---|
| No ICs Required |
Requirements
| Description | Details |
|---|---|
| Advance approval required to transport soil or groundwater off-site. |
There are no documents for this site report.
No associated sites were found.