Site Report: ADOT&PF Manley Maintenance Station Class V Injection Well
| Site Name: | ADOT&PF Manley Maintenance Station Class V Injection Well |
|---|---|
| Address: | MP 150.2 Elliot Highway, Manley Hot Spgs, AK 99756 |
| File Number: | 180.38.011 |
| Hazard ID: | 26572 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 65.007347 |
| Longitude: | -150.611986 |
| 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 June 2012, the Alaska Department of Transportation and Public Facilities (ADOT&PF) had contractors investigate one injection well at the Manley Maintenance facility. One boring was advanced in the estimated proximity of the injection well and a single sample collected and analyzed for volatile organic compounds, semi-volatile organic compounds, and metals. Further removal of the injection well was completed Aug 15-16, 2016 where contamination was identified at the well, and at fittings between cast iron piping and wood stave piping. The IW structure was removed, along with sewer rock and contaminated soil in the vicinity of the well. Follow-up assessment is planned.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 6/29/2016 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 7/28/2016 | Site Characterization Workplan Approved | EPA provides closure plan for injection well at site. DEC reviewed and provided comments to work plan addendum and approves of sampling methodology. | John Carnahan |
| 8/19/2016 | Update or Other Action | Received field report from DOT consultant that contamination was identified during the removal of the injection well. Decommissioning activities included removal of the well structure, sewer rock, and adjacent contaminated soil. What was believed to be perched groundwater entered the excavation during removal. Delineation and assessment to follow. | John Carnahan |
| 8/30/2016 | Update or Other Action | Received report of contamination during the removal of the sump in the Manley Shop Building. | John Carnahan |
| 11/17/2016 | Meeting or Teleconference Held | Meeting with EPA and DOT to discuss status and CAFO requirements. | John Carnahan |
| 8/16/2017 | Update or Other Action | EPA provides Conditional Closure of One Motor Vehicle Waste Disposal Well at Alaska Department of Transportation and Public Facilities, Manley Hot Springs Maintenance Station, Northern Region, Alaska. Conditions include: According to closure report, residual soil contamination remains near the former locations of the MVWDW and sump in the M&O Shop. Both lateral and vertical extent are unknown. Due to the depth to groundwater, it is unknown if contamination from the injection system has reached groundwater. The ADOT &PF will coordinate and cooperate with the ADEC CSP to develop an appropriate scope of work to further evaluate the vertical and lateral extent of remaining contamination in soil and groundwater associated with the MVWDW. | 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 |
| 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: 79927 name: Class V Injection Well | Michael Hooper |
| 7/11/2023 | Update or Other Action | Reviewed workplan addendum and sent comments to DOT requesting an additional sampling location be added. | Michael Hooper |
| 7/26/2023 | Site Characterization Workplan Approved | Approved WP addendum. In order to investigate contamination discovered during removal of injection well MN-IW-1, DOT&PF plans to install five soil borings, three of which will be completed as temporary groundwater sampling points. Samples will be collected from soil and groundwater to delineate the extent of contamination. | Michael Hooper |
| 1/17/2024 | Meeting or Teleconference Held | Annual Meeting Held with DOT to discuss plans for coming year at all NR UIC sites. | Michael Hooper |
| 3/11/2024 | Cleanup Complete Determination Issued | A Cleanup Complete Determination was approved by the Contaminated Sites Environmental Program Manager II. Contamination remains under part of the former maintenance station floor but groundwater has not been impacted. | Michael Hooper |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| Naphthalene | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | SoilSoilSoil | |
| BTEX | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil | |
| 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. | |
| 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 |
|---|---|---|
| 24880 | ADOTPF - Manley Maintenance Station | 180.26.006 |