Site Report: Residence - 14424 Canyon Road HHOT
| Site Name: | Residence - 14424 Canyon Road HHOT |
|---|---|
| Address: | 14424 Canyon Road, Lot 5, Block 1 Beede Subdivision, Anchorage, AK 99516 |
| File Number: | 2100.38.482 |
| Hazard ID: | 4362 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 61.090670 |
| Longitude: | -149.695880 |
| 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
On December 22, 2005 a release of diesel fuel (approximately 250 gallons) was discovered from an above ground home heating oil tank. Groundwater wells are present on site and on adjacent properties. Approximately 74 cubic yards of contaminated soil were removed during initial response actions.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 3/13/2007 | Spill Transferred from Prevention Preparedness and Response Program | Site transferred by PERP staff Frank Wesser. Spill Date = 12/22/05; Spill No. 05239935601; Substance = Diesel; Quantity = ~250 Gallons. | Mitzi Read |
| 3/14/2007 | Site Added to Database | Site added to the database. | Mitzi Read |
| 3/19/2007 | Exposure Tracking Model Ranking | Initial ranking completed. | Mitzi Read |
| 8/8/2012 | Potentially Responsible Party/State Interest Letter | Katrina Chambon | |
| 8/22/2012 | Exposure Tracking Model Ranking | A new updated ranking with ETM has been completed for source area 75346 Diesel HHOT AST. | Katrina Chambon |
| 9/20/2012 | Exposure Tracking Model Ranking | A new updated ranking with ETM has been completed for source area 75346 Diesel HHOT AST. | Katrina Chambon |
| 9/21/2012 | Cleanup Complete Determination Issued | On December 22, 2005, Mr. Brooks Wade discovered and reported to ADEC’s Prevention and Emergency Response Program (PERP) an approximate 250 gallon fuel leak of home heating oil from his 300 gallon aboveground storage tank (AST). The AST was located along the northeast side of the residence and about 20 feet away from the residence. The Wade property is located in the lower hillside of Anchorage off of Upper Canyon Road. Emerald Alaska Inc. (EAI) was contacted by the homeowner to develop, implement and coordinate all activities associated with the initial Emergency Response Action Work Plan. EAI started excavation on February 8, 2006 and completed work on February 14 after a weather delay. The total amount of soil removed from the site was approximately 110.48 tons. The contaminated soils were excavated to a total depth of 18 feet below ground surface (bgs). No groundwater or free product was observed in the excavation. The excavation was later filled with clean gravel. The remaining fuel was pumped out before removal and the AST was recycled for scrap metal. Soil samples, representing the post removal conditions, were obtained from the excavation sidewalls (at approximately 12 feet bgs) and bottom (at approximately 18 feet bgs) using the track-hoe bucket and field screening using a Photo Ionization Detector (PID). Field screening data for the east (east – southwest ) and south (south – southwest) sidewalls showed elevated concentrations at approximately 6 feet bgs, in the most visible heavily contaminated zone beneath the HHOT sump location, and decreasing with depth (12 feet bgs). The north (north – southwest) sidewall samples contained low-level and decreasing petroleum hydrocarbon concentrations at the 6 and 12 foot depths, indicating that the northern edge of the HHOT release was defined. The western extent of the HHOT release was determined by visual and olfactory observations. After the extent of the release had been determined, removal activities were refocused to the area beneath/adjacent to the HHO tank/sump. Total depth of excavation was 18 feet bgs and 23 feet in length and 10 feet in width. Two confirmation soil samples were collected from the track-hoe bucket from approximately 18 feet bgs. The soils removed are considered to be representative of conditions of the bottom of the excavation. The samples were submitted to SGS-CTE Laboratory for analysis of DRO using the AK-102 method. The confirmation soil samples, CS-1 and CS-2 contained similar concentrations of DRO, reported as 563 mg/kg and 538 mg/kg. Soil samples collected and analyzed for gasoline range organics (GRO), benzene, toluene, ethylbenzene, and xylenes, (BTEX) samples were well below their respective most stringent 18 AAC 75.341 cleanup levels (i.e., migration to groundwater). | Katrina Chambon |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| 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. |
No associated sites were found.