Site Report: MTA Palmer Vehicle Shop
| Site Name: | MTA Palmer Vehicle Shop |
|---|---|
| Address: | 1740 South Chugach Street, SW Corner of E. Comm. Dr., Palmer, AK 99645 |
| File Number: | 2245.38.017 |
| Hazard ID: | 3326 |
| Status: | Cleanup Complete - Institutional Controls |
| Staff: | IC Unit, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 61.588306 |
| Longitude: | -149.117722 |
| Horizontal Datum: |
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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
Hydraulic oil leak from the lift unit into the pit area of the shop resulted in DRO, RRO, and Chromium contamination of soils above Method 2 migration to groundwater cleanup levels. Palmer Industrial Park Tract F. Possible groundwater well located approximately 700 feet from south side of shop building in Tract H-2C-3B. Well log references depth to groundwater at 102 feet below ground surface (bgs). The facility itself is on Palmer well water #4 which draws from a depth of 186.5 feet bgs. The elevation is ~64 meters (~210 feet).
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 6/18/2001 | Site Added to Database | DRO, RRO, and metals contamination. | Bruce Wanstall |
| 6/18/2001 | Site Ranked Using the AHRM | Preliminary ranking. | Bruce Wanstall |
| 8/21/2001 | Institutional Control Record Established | Database updated to reflect Institutional Control on the site. | Beatrice Egbejimba |
| 8/21/2001 | Conditional Closure Approved | ADEC reviewed hydraulic release information report and file. The report indicated that soil samples collected adjacent to the pit at 8 feet showed diesel range organics (DRO) and methylene chloride above 18 AAC 75.341 (c and d) soil cleanup levels. Soil samples collected at 10 feet were not elevated for DRO but did show elevated chromium and methylene chloride levels. The contamination appears to be perched on a concrete slab beneath the building and further clean up of the contamination at this time would be impracticable. Based upon the information provided and the nature and extent of the contamination, ADEC has determined the MTA Palmer Shop requires no further remedial action. | Beatrice Egbejimba |
| 4/1/2002 | Site Ranked Using the AHRM | Changed SW Exposure from 0.4 to 0 because SW is not used as a DW source. Still a Medium Priority site. | Former Staff |
| 9/23/2002 | Update or Other Action | Institutional Control type : Letter to RP/Landowner and note in database. | Beatrice Egbejimba |
| 5/20/2004 | Site Number Identifier Changed | Corrected Region from 21 to 22. | Former Staff |
| 7/16/2004 | Update or Other Action | File number issued 2245.38.017 | Aggie Blandford |
| 8/29/2012 | Update or Other Action | Staff changed from Rich Sundet to IC Unit. | Kristin Thompson |
| 9/25/2012 | Institutional Control Compliance Review | IC review conducted and reminder system updated. | Evonne Reese |
| 11/12/2014 | Institutional Control Update | An IC reminder letter was issued to the responsible party on this date. | Kristin Thompson |
| 5/8/2020 | Institutional Control Compliance Review | An IC compliance review was conducted on this date and a reminder letter of the current site conditions was issued to the responsible party on record. This site is under a 5 year compliance review period and the next review will occur in 2025. | IC Unit |
| 6/9/2020 | Institutional Control Update | Received an email confirmation from the responsible party that all ICs are in compliance. | Evonne Reese |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| Chromium - Total | 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 | |
| Dichloromethane | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil |
Control Type
| Type | Details |
|---|---|
| CS Database Notation And Letter To Landowner/RP | NFRAP letter sent to the consultant and copied to MTA on 8/21/01 noting that methylene, DRO and total chromium exceeded Method 2 cleanup levels. New Horizon's report also noted that lead, DRO, RRO, cadmium and total chromium exceeded cleanup levels in water that was collected at site on top of a subsurface concrete slap, but little migration exists because the contamination is below a concrete slap which prevents migration. |
Requirements
| Description | Details |
|---|---|
| When Contaminated Soil is Accessible, Remediation Should Occur | NFRAP letter requires MTA to manage the contaminated media when it is accessible. Contaminated soil exists adjacent to a sump and to the depth of the concrete slab (10 ft.) None requested. |
| Advance approval required to transport soil or groundwater off-site. | NFRAP letter requires MTA to notify DEC prior to off site transportation. NFRAP letter requires MTA to notify DEC prior to off site transportation of any contaminated soil and water when generated. |
No associated sites were found.