Site Report: ADOT&PF Healy Maintenance Station Class V Injection Well
| Site Name: | ADOT&PF Healy Maintenance Station Class V Injection Well |
|---|---|
| Address: | Mile 18 of Healy Spur Road, Healy, AK 99743 |
| File Number: | 152.38.004 |
| Hazard ID: | 26568 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 63.870811 |
| Longitude: | -149.013302 |
| Horizontal Datum: | WGS84 |
|  |
 |  |
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 June 2010, DOT had its consultants investigate numerous class-5 injection wells. The Healy site was investigated with a single boring in what was estimated to be in close proximity to an IW. One sample indicated VOCs and other chemical constituents above the DEC cleanup levels. Further investigation was conducted in June 2016 and identified contamination remaining at the time of the removal of two injection wells (HE-IW-1 and HE-IW-2).
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 6/17/2016 | Site Characterization Workplan Approved | EPA provides conditional approval of closure plan. DEC provided comments to draft and did not object to methods proposed. | John Carnahan |
| 6/20/2016 | Update or Other Action | Field report submitted that summarized the status of two injection wells (HE-IW-1 and HE-IW-2). IW-1 was a perforated tank with effluent discharging at approximately 10 feet below surface. Tank and some likely contaminated material removed to depth of 19 feet. Samples collected. IW-2 was a wood-crib structure with top at about 15 feet below surface. Excavation of crib and associated soil to depth of 23 feet. Groundwater estimated at 100 feet. | John Carnahan |
| 6/23/2016 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 8/11/2016 | Update or Other Action | DOT provides interim report for Healy activities identifying contamination and summarizing activities. No data presented. | John Carnahan |
| 9/15/2016 | Update or Other Action | Waste material removed from site as hazardous waste and transported to appropriate disposal facility. | John Carnahan |
| 1/31/2017 | Document, Report, or Work plan Review - other | DOT submits Healy MS IW Closure report to EPA for review and determination. | John Carnahan |
| 3/14/2017 | Document, Report, or Work plan Review - other | EPA provides Conditional Closure of Two Motor Vehicle Waste Disposal Wells at Alaska Department of Transportation and Public Facilities' Healy Maintenance Station, Northern, Alaska | John Carnahan |
| 6/13/2019 | Meeting or Teleconference Held | Meeting held with ADOT&PF, ADEC, and Shannon and Wilson do discuss site scoping and work prioritization for the next year. | Michael Hooper |
| 8/19/2019 | Document, Report, or Work plan Review - other | Approved Generic Workplan Addendum Final for Healy Maintenance station 2019 Site Characterization. | Michael Hooper |
| 12/5/2019 | Meeting or Teleconference Held | Meeting held with ADOT and Shannon & Wilson to discuss 2019 sampling season and plans for 2020. | Michael Hooper |
| 10/28/2021 | Meeting or Teleconference Held | Annual meeting held with DOT Northern Region and contractors to discuss previous field season and plans for the next year. | Michael Hooper |
| 11/19/2021 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 79923 name: Class V Injection Wells | Michael Hooper |
| 9/22/2023 | Cleanup Complete Determination Issued | DEC has issued a cleanup complete determination for this site. Petroleum contamination remains in deep soils above the human health cleanup levels. The groundwater aquifer has not been impacted and modelling indicates contamination will not migrate. | Michael Hooper |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | > Human Health/Ingestion/Inhalation | Soil | |
| RRO | > Human Health/Ingestion/Inhalation | Soil | |
| Tetrachloroethene | 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. | |
| 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 |
|---|---|---|
| 25142 | ADOTPF - Healy Maintenance Facility | 150.26.034 |