Site Report: ADOT&PF Quartz Creek Maintenance Station Class V Injection Well
| Site Name: | ADOT&PF Quartz Creek Maintenance Station Class V Injection Well |
|---|---|
| Address: | 35340 Quartz Creek Road; Mile 1 Quartz Creek Road; SE End of Quartz Creek Airport, Cooper Landing, AK 99572 |
| File Number: | 2308.38.005 |
| Hazard ID: | 26691 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 60.481921 |
| Longitude: | -149.726711 |
| 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
The Alaska Department of Transportation and Public Facilities (ADOT&PF) Quartz Creek Maintenance Station supports State of Alaska vehicles and equipment in the Cooper Landing, AK area. It also serves as a material storage facility and as a material site. There are two buildings at the site typically referred to as the "new" and "old" shop buildings. Injection wells at both buildings are subject to an EPA Consent Agreement and Final Order. The old shop building (east) had two vertical culverts installed in the floor to collect and percolate snow melt from the equipment parked in the facility to the subsurface. These constitute two EPA Class V Injection Wells used for motor vehicle waste disposal. Samples were collected from the injection wells in September and the wells were filled with concrete in October 2013. Some volatile organic compounds (VOCs) were detected in the samples, but were below DEC cleanup levels. Arsenic and chromium were confirmed above DEC cleanup levels but were determined to be background and closure of the two injection wells at the old shop building was approved by the Prevention Preparedness and Response Program in February 2014. The new shop building (west) has a floor drain system with an oil-water separator. Water from the floor drains enters the oil water separator and continues to a seepage tank which constitutes a class V injection well for motor vehicle waste disposal. Sampling activities to characterize soil as part of the Class V injection well removal and closure were completed on April 18, 2016. Five VOCs, five semi-volatile organic compounds (SVOCs), as well as cadmium and lead were detected below the DEC cleanup levels in one or more samples from the discharge point or storage cell characterization. Naphthalene, arsenic, and chromium were detected above the DEC cleanup levels.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 3/11/2015 | Document, Report, or Work plan Review - other | R&M submitted a report with this date titled: Class V Underground Injection Well Site Visit and Water Sampling. Two drinking water samples collected from the tap at the New shop did not contain contaminant concentrations above cleanup levels. The drinking water samples were analyzed for VOCs, SVOS, and metals. | Grant Lidren |
| 5/16/2016 | Site Characterization Report Approved | ADEC received the Class V Injection Well Closure Report Quartz Creek Maintenance Station submitted by R&M and dated May 2016. Three soil samples collected form the discharge point contained naphthalene up to 0.0593 mg/kg. 90 cy of soil was stockpiled on site. | Grant Lidren |
| 1/12/2017 | Update or Other Action | On this date, ADEC sent a Compliance Letter to DOT. This letter was sent to DOT due to work being completed without approved work plans for both Chulitna (file: 2269.38.0053) and Silvertip (file: 2315.38.004) Class V Injection Wells and due to the transport of stockpiles without EPA or ADEC approval at the Quartz Creek Injection Well (file: 2308.38.005). | Grant Lidren |
| 3/9/2017 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 6/29/2017 | Site Characterization Report Approved | On this date, ADEC received and reviewed the Stockpiled Soil Sampling and Analysis Report ADOT Maintenance Station, Quartz Creek, Alaska submitted by Nortech dated June 28, 2017. Four soil samples collected 18 to 24 inches into the 90 cy pile were analyzed for AK methods, PAHs, BTEX, and select metals. None of these soil samples contained contaminant concentrations above ADEC method 2 MTG cleanup levels. | Grant Lidren |
| 7/24/2017 | Update or Other Action | On this date, the 90 cubic yard stockpile was spread to fill in an low area on site. | Grant Lidren |
| 7/28/2017 | Update or Other Action | On this date, EPA sent a letter to DOT approving closure or the motor vehicle Waste Disposal Well at the new west shop. the letter details the well removal and site investigation. | Grant Lidren |
| 8/9/2017 | Cleanup Complete Determination Issued | The Alaska Department of Environmental Conservation, Contaminated Sites Program (ADEC) has completed a review of the environmental records associated with the ADOT&PF Quartz Creek Maintenance Station Class V Injection Well located at 35340 Quartz Creek Road in Cooper Landing. Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and no further remedial action will be required unless new information becomes available that indicates residual contaminants may pose an unacceptable risk. | Grant Lidren |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| Naphthalene | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil | |
| Arsenic - Total | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil | |
| Chromium - Total | 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) |
No associated sites were found.