Site Report: Mt. McKinley Professional Building
| Site Name: | Mt. McKinley Professional Building |
|---|---|
| Address: | 733 West 4th Avenue, Between G and H Streets, Anchorage, AK 99501 |
| File Number: | 2100.38.069 |
| Hazard ID: | 3917 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 61.219444 |
| Longitude: | -149.894167 |
| Horizontal Datum: |
|  |
 |  |
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
Roughly three tons of soil were generated during replacement of the elevator’s hydraulic cylinder in July of 2002. The soil was removed with an auger to make room for the new (wider) cylinder and casing, which were buried to about 50 feet below ground surface (bgs). The soil was stockpiled on a tarp near the north side of the building, and was left uncovered. The stockpile was characterized for disposal on December 9, 2002, following an observed sheen coming from the pile. Results of the characterization revealed that diesel range organics (DRO) was present in the pile at 20,800 mg/kg and residual range organics (RRO) was present at 10,800 mg/kg. The ADEC cleanup levels for DRO and RRO are 250 mg/kg and 10,000 mg/kg, respectively. The soil stockpile was transported to Alaska Soil Recycling (ASR) on May 19, 2003 for disposal.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 4/23/2003 | Update or Other Action | In a letter dated 4/23/03, CS responsed to Wiley Brooks Co., Inc. 4/22 and 23 verbal requests to transport about 1 cubic yard of petroleum contamianted soil removed from the bottom of an elevator at the Mt. McKinley building in Anchorage. The letter also noted that this was the first time that this spill(s) had been reported to DEC. The letter also noted that Mr. Brooks had stated that Shannon & Wilson had sampled the stockpile of the excavated soil but in a conversation with Matt Hemry of S&W, he noted that S&W was not requested to sample the remaining soil in the source. The DEC letter also noted that the lab data that Brooks faxed to DEC on 4/22/03 showed DRO up to 20,800 mg/kg, RRO at 10,800 mg/kg and low levels of BTEX. Based upon the data, DEC granted Brooks request to transport the contaminated soil to ASR, but noted that this would not close out the remaining contamination in the ground. Lastly, DEC requested further information if available on the remaining contamiantion and if shown to below applicable cleanup levels, DEC could potentially close the site. The letter also requested a brief spill report. | Rich Sundet |
| 4/23/2003 | Site Added to Database | Hydraulic fuel. | Elizabeth Stergiou |
| 4/23/2003 | Site Ranked Using the AHRM | Site located under the elevator shaft of a 4-story office building. | Elizabeth Stergiou |
| 4/23/2003 | GIS Position Updated | Site location determined using TopoZone interactive web site. | Elizabeth Stergiou |
| 11/12/2003 | Update or Other Action | In a submittal dated 11/12/03, Wiley Brooks Co., Inc. provided CSP with a letter noting that the soil from the elevator wells has been removed and disposed of in accorance with applcable regulatons and provided a 7/10/03 ASR report stating that on 5/19/03 ASR received 2.96 tons of petroleum contaminated soil from 733 W. 4th Ave. Elevator well. The report also inlcuded a post treatment analysis of the soil showing that it met Level A cleanup for DRO and RRO (59.1 mg/kg DRO and 131 mg/kg RRO). The Brooks submittal also requested that DEC remove the siate as one that has contamaminated soil. | Rich Sundet |
| 6/18/2008 | Exposure Tracking Model Ranking | Initial ranking with ETM completed. | Grant Lidren |
| 10/23/2014 | Document, Report, or Work plan Review - other | Received the Request for "Cleanup Complete" Designation letter on this day. The letter provided an in-depth site history, CSM, and reasons that further characterization/investigation is impractical. | Joshua Barsis |
| 10/27/2014 | Exposure Tracking Model Ranking | A new updated ranking with ETM has been completed for source area 74892 Hydraulic fuel leak. | Joshua Barsis |
| 10/30/2014 | Cleanup Complete Determination Issued | Received closed designation on this day. | Joshua Barsis |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | > Human Health/Ingestion/Inhalation | Soil | |
| RRO | 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. |
No associated sites were found.