Site Report: Delta Motors
| Site Name: | Delta Motors |
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| Address: | 1527 Richardson Highway; MP 266 Richardson Highway, Delta Junction, AK 99737 |
| File Number: | 120.26.009 |
| Hazard ID: | 25846 |
| Status: | Active |
| Staff: | Livia Bracker, 9072697695 livia.bracker@alaska.gov |
| Latitude: | 64.039000 |
| Longitude: | -145.734700 |
| 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
On September 27, 2011 a 2,500-gallon diesel underground storage tank (UST) and associated piping were removed from the former Delta Motors site. Soil samples collected from the diesel tank system documented contamination remaining above cleanup levels. Approximately 50 cubic yards of excavated soil from the diesel system exceeded cleanup levels with 266 milligrams per kilogram (mg/kg) diesel range organics (DRO) and was used as backfill. An additional 15 cubic yards of excavated diesel system contaminated soil is currently stockpiled on site. The extent of the diesel UST system contamination has not been defined. Need to define the extent of the diesel contamination. Need corrective action for the 15 cubic yards stockpiled on site, the 50 cubic yards backfilled contaminated stockpile, and the remaining diesel contamination in the excavation. On the same date, the location of three 4,000-gallon leaded/unleaded gasoline tanks was assessed. The gasoline tanks and their associated piping were removed previously by the owner without a site assessment or certified UST worker. No documentation was provided that the six soil samples collected at 12 feet below ground surface for the former three leaded/unleaded gasoline tanks was at the correct location or depth (trenching was not done to verify tank excavation location or depth). There were no piping or dispenser or tank backfill field screening or analytical samples collected. Need to verify location and depth of gasoline tanks/piping/dispensers and complete assessment at appropriate location and depth including the backfill. Groundwater is estimated to be at 30 feet below ground surface. The on-property drinking water well located inside the shop building 30 feet from the USTs was sampled only for volatile organic compounds (VOC) by method 524.2. No gasoline range (GRO) or diesel range organics (DRO) drinking water samples were collected. The drinking water well sample has 1.27 micrograms per liter (ug/l) tetrachloroethene (PCE). Need further monitoring of the on-property drinking water well.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 2/15/2012 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 2/15/2012 | Leaking Underground Storage Tank Release Confirmed - Petroleum | LUST site created in CSP database for source area One 2,500-Gal Diesel and Three 4,000-Gal Gasoline USTs, 79264 | Mitzi Read |
| 2/15/2012 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 79264 name: One 2,500-Gal Diesel and Three 4,000-Gal Gasoline USTs | Mitzi Read |
| 4/4/2012 | Leaking Underground Storage Tank Cleanup Initiated - Petroleum | Administrative action addition for grant reporting purposes. | Evonne Reese |
| 2/3/2014 | Update or Other Action | Site transferred from Burgess to Dieffenbacher. | Rebecca Bryan |
| 3/12/2014 | Underground Storage Tank Site Characterization or Assessment | Underground storage tank (UST) assessment & closure report from Shannon & Wilson received by ADEC on 11-23-11. ADEC-approval to conduct(UST) closure was given to owner on August 25, 2011. Site was previously a retail gas station and is presently an auto repair shop. On September 27, former fuel dispensers, three former 4,000-gallon gasoline UST's, and one 2,500-gallon diesel UST were removed during closure. Eighteen soil samples were collected and analyzed for gasoline range organics (GRO), diesel range organics (DRO), and benzene, toluene, ethyl benzene & Total xylenes (BTEX). One soil sample was analyzed for polycyclic aromatic hydrocarbons (PAH) and one soil sample was analyzed for lead. One water sample was collected from the onsite water well via a bathroom sink and analyzed for volatile organic compounds. Seven of ten soil samples were above ADEC cleanup levels for DRO. GRO was detected in five soil samples and benzene were detected in two soils samples. Toluene and total xylenes were detected in four soil samples. PAH's were detected, but not above ADEC cleanup levels. Tetrachloroethene was detected in the water analysis of VOC's. | Amy Rodman |
| 6/16/2014 | Potentially Responsible Party/State Interest Letter | PRP letter mailed to Larry Hutto. | Amy Rodman |
| 9/14/2015 | Update or Other Action | Letter requesting updated environmental information was sent to PRP. (All letters re-sent on 11/25/15) | Joy Whitsel |
| 6/17/2016 | Update or Other Action | Sent second letter requesting information on site status. | John Carnahan |
| 8/11/2016 | Update or Other Action | Sent request for information to presumed current owner. | John Carnahan |
| 6/25/2018 | Workplan Requested | Sent pre-compliance letter requesting RI work plan from Mr. Hutto. | John Carnahan |
Contaminant Information
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Requirements
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There are no documents for this site report.
No associated sites were found.