Site Report: Commercial Property - 619 East 5th Avenue
| Site Name: | Commercial Property - 619 East 5th Avenue |
|---|---|
| Address: | 619 East 5th Avenue, Anchorage, AK 99501 |
| File Number: | 2100.38.551 |
| Hazard ID: | 26333 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 61.217819 |
| Longitude: | -149.871912 |
| 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
In October 2015, following demolition of two buildings (the Former West addition, a maintenance shop, and the Former East Structure, a storage building), an unregulated 1,000-gallon underground heating oil tank (HOT) was removed. The lot is currently vacant. Following the excavation and disposal of approximately 70 cubic yards of contaminated soil, confirmation samples collected up to 17 feet below ground surface contained diesel range organics (DRO) up to 6,810 mg/Kg. Groundwater was not encountered during the excavation and is believed to be greater than 35 feet below the ground surface.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 1/20/2015 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 1/20/2015 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 79727 name: 1,000-Gallon Heating Oil UST | Lisa Krebs-Barsis |
| 1/26/2015 | Potentially Responsible Party/State Interest Letter | Lisa Krebs-Barsis | |
| 6/2/2015 | Site Characterization Workplan Approved | Reviewed and approved of site characterization work plan submitted by RP's consultant. Work plan includes advancing six borings within and around the HOT excavation. There is no ground water monitoring planned for this investigation. Characterization work will be conducted simultaneously with work at the collocated UST site (2100.26.588). | Lisa Krebs-Barsis |
| 6/25/2015 | Site Visit | Visited the site to observe the advancement of borings in the footprint and around the footprint of the original heating oil tank removal excavation. | Lisa Krebs-Barsis |
| 10/20/2015 | Site Characterization Report Approved | Reviewed the site characterization report submitted on August 18, 2015. Seven bore holes were advanced near the heating oil tank release. Groundwater was encountered at 35 feet below the ground surface (bgs). Diesel range organics at concentrations of 631 mg/Kg were detected at 30 feet bgs in Boring 6 (at the south end of the HOT excavation and near the former dispenser) and 2720 mg/Kg at Boring 1 (below the gasoline UST excavation footprint). A work plan to investigate groundwater was requested. | Lisa Krebs-Barsis |
| 11/13/2015 | Site Characterization Workplan Approved | Approved of work plan to install three groundwater monitoring wells on Lots 25 and 26. | Lisa Krebs-Barsis |
| 1/29/2016 | Site Characterization Report Approved | Three monitoring wells were installed, two on Lot 25 (MW2, MW3) and one on Lot 26 (MW1). Groundwater was found approximately 35 feet below ground surface and was determined to flow to the north east. MW3 was placed in the source area. Samples collected from the each of the wells were analyzed for DRO, RRO, GRO, and BTEX. The sample from MW3 was also analyzed for PAH. None of the analytes were detected in any of the samples. | Lisa Krebs-Barsis |
| 3/21/2016 | Document, Report, or Work plan Review - other | Reviewed groundwater sampling work plan for 619 East 5th Ave. Monitoring wells MW-1, MW-2, and MW-3 will be purged and sampled for DRO, GRO, and BTEX. The sample from MW-3 will also be analyzed for PAHs. | Bill O'Connell |
| 7/7/2016 | Document, Report, or Work plan Review - other | Second round of groundwater sampling results submitted. MW-1, MW-2 and MW-3 were sampled for DRO, GRO, BTEX and PAH's and no analytes were detected. | Darren Mulkey |
| 8/19/2016 | Update or Other Action | The monitoring wells for this site were decommissioned on 8-19-16 and report submitted by Montauk. | Darren Mulkey |
| 8/22/2016 | Institutional Control Record Removed | Institutional Controls have been removed. | Darren Mulkey |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | < Table C | Groundwater | Second round of groundwater samples were tested for DRO, GRO, BTEX and PAH's. No analytes were detected. |
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) |
| Hazard ID | Site Name | File Number |
|---|---|---|
| 26338 | Commercial Property - 619 East 5th Avenue UST #2 | 2100.26.588 |
| 26240 | Fairview Areawide Brownfield Assessment | 2100.57.020 |