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Site Report: Alaska Commercial Prop. - Aniak


Site Name: Alaska Commercial Prop. - Aniak
Address: 2nd Street (west side), Aniak, AK 99557
File Number: 2404.38.011
Hazard ID: 2110
Status: Cleanup Complete
Staff: ,
Latitude: 61.580431
Longitude: -159.528167
Horizontal Datum:NAD83

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

Diesel and gasoline contamination. In-situ site bio-augmentation on-going. Areas remediated include pumphouse (AST), Store, wooden sump, and Marina. A Class "A" water well existed in the area of the wooded sump. The sale of AC properties included an agreement to cleanup any petroleum problems with contamination. Approximately 900 cubic yards of soils were excavated at the pumphouse site. 268 cubic yards were confirmed to be above cleanup levels and sent to stockpile site. Pumphouse area had DRO and GRO levels above cleanup levels (25,000 and 355 ppm, resp.). Further excavation of pumphouse site would jeopardize flood dike. Additional contamination also remained near the south-east corner of the excavation site and were not removed because the main road through the area would be impacted. Drums of used motor oils in the Store area were donated to the City of Aniak where they were burned in an approved used oil burner system. In the sump area, the contamination was very close to the building and would create a problem for structural integrity of the AC Store so the entire area was treated as a bio-augumentation site. 20 cubic yards of soil stained from drums stored alongside the Marina building were excavated to the bio-cell and the area backfilled with clean material. GW ~25' below land surface. Lots 1 and 4, Block 3, U.S. Survey # 3093. Utilities complicate the situation. A work plan was approved in l995.

Action Information

Action Date Action Description DEC Staff
9/16/1993 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Reviewed a draft workplan: "Environmental Site Assessments for Community Enterprise Development of Alaska, August, 1993", prepared by Montgomery Watson and recieved by ADEC/WDO 9/3/93. Insufficient information was available for adequate plan review and approval. Phase I or II Site Assessments needed for most of the AC Store sites. Eileen Olson
10/15/1993 Cleanup Level(s) Approved Alternate Cleanup Levels Approved this date. Ray Dronenburg
6/1/1994 Update or Other Action (Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Reviewed the Environmental Assessment and Cleanup Plans for 33 properties - Final Report. Plans are approved except that 1) the department reserves the right to review and approve a stockpile plan and those plans should be provided with a 3 week review period; 2) should the collection and subsequent treatment of GW be required, a discharge permit for treated waters returned to the environment may be required; and 3) burning of waste oils for purposes other than heat recovery is prohibited. Ray Dronenburg
11/18/1994 Update or Other Action (Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). After reviewing the "Draft Environmental Assessments and Cleanup Plans for 33 Property Transfers in 16 Alaskan Communities", additional corrective action is needed for this site. Cindy Thomas
11/18/1994 Update or Other Action (Old R:Base Action Code = SA2R - Phase II SA Review (CS)). Reviewed the "Draft Environmental Assessments and Cleanup Plans for 33 Property Transfers in 16 Alaskan Communities". Cindy Thomas
6/15/1995 Update or Other Action (Old R:Base Action Code = RAU - Remedial Actions Underway (General)). Contaminated soils excavated. Ray Dronenburg
11/25/1996 Long Term Monitoring Established Reviewed a sampling closure report. The sampling results of 9/17/96 exceed any previously noted contamination levels for gasoline, both at this site and prior to excavation and are above cleanup levels... stockpile will be re-sampled in spring 1997 prior to attempting closure. The stockpile is secured by fencing and is covered as required by ADEC guidance documents, for the winter." The contaminated sites stockpile will be put on an "institutional control" status which will require sampling, at your discretion, before closure. Ray Dronenburg
11/29/1996 Cleanup Level(s) Approved Approved closure of all sites in Aniak with the exception that a remediation stockpile failed the final soil sampling and must be re-tested in Spring l997. Stockpile is an approved stockpile located on AC store lands. Disposal contingent upon levels reached for remediation. Ray Dronenburg
11/29/1996 Site Added to Database Diesel and gasoline contamination. Ray Dronenburg
11/19/1997 Update or Other Action ADEC has reviewed a letter and a sampling and analysis report submitted by Alaska Village Environmental Services (AVES) requesting closure for a stockpile of approximately 950 cubic yards of diesel contaminated soils. Based upon a review of this report and information presented at a 11/10/1997 meeting, ADEC has conditionally determined that cleanup has been achieved at the site and it requires no further remedial action (NFA). Laboratory analysis of soil samples collected on September 6, 1997, indicated that out of a total of eight soil samples, four had diesel contaminations at or below ADEC Matrix Level "A." The remaining four samples showed a maximum diesel concentration of 200 mg/kg (within Level "B"). ADEC considers that the risk posed by these soils is minimal and would not pose an environmental or health risk at this location if they are covered with a layer of clean soils. Since a Level "A" cleanup has not been completely achieved, this decision is made conditional on (1) a proposal from the current property owner to use the remediated soils as subbase fill material at the Aniak Biocell property, and, (2) a documentation of the use of the soils following the proposal. Since the soil is to be placed at a location other than where it was generated, ADEC requests a layer of clean soil (minimum 6 to 12") be used as a cover layer to insure it does not pose an environmental or health risk. Shah Alam
4/21/1998 Site Ranked Using the AHRM Ranking action added now because it was not added when the site was originally ranked. Bill Petrik
4/14/2006 Conditional Closure Approved November 1997: Aproximately 950 cubic yards of diesel contaminated soils have been successfully remediated in a bioremediation cell and the biocell was decomissioned in 1998. No further action is recommended at this time. Shannon Oelkers
4/14/2006 Update or Other Action November 1998: Aniak biocell decommisioned. Shannon Oelkers
12/17/2008 Update or Other Action DEC contacted by Abe Friendly with the Association of Village Council Presidents (Housing Authority) regarding a housing development built by Aniak Traditional Council. Apparently HUD had "taken over" and had some questions about the location of the biocell as reference on the Community Maps found at http://www.dced.state.ak.us/dca/profiles/profile-maps.htm on Aniak 2001 Sheet 2 and referenced as US Survey 2236. The assumption is that this is the location of the soil treatment (biocell) area that soil excavated from this site/project was treated. Reviewed file to communicate environmental issues/concerns as no decision letter had been previously written. Received a completed Public Records Request Form. Emailed to Mr. Friendly, copies of report and included copy of email in file. Keather McLoone
7/18/2011 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 73088 name: auto-generated pm edit Alaska Commercial Prop. - Aniak Grant Lidren
7/28/2011 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program (CSP), has completed a review of the environmental records associated with the Alaska Commercial Properties - Aniak. Based on the information provided to date and the administrative record, the ADEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment, and this site is closed. Grant Lidren
7/28/2011 Long Term Monitoring Complete Administrative action on 5/1/2013. Kristin Brown
8/7/2015 Update or Other Action This file has been archived at Alaska Archives Barcode: 896980 Box 414 Susan Carberry

Contaminant Information

Name Level Description Media Comments
Benzene > Human Health/Ingestion/Inhalation Soil Historic data suggests the former pump house area may contain benzene contamination up to 0.15 mg/kg. However, further review of the file confirmed that this area was excavated and sampled again in 1996 for diesel range organics (DRO) and gasoline range organics (GRO). DRO and GRO were not detected in the 1996 sample results. The excavation has been brought back to grade with clean fill. Furthermore, the Alaska Commercial property drinking water well was sampled in 2010 as part of a state-lead Aniak Airport Groundwater Study. There were no detections of hydrocarbon contamination in the drinking water sample which further indicates that contamination did not migrate to groundwater.

Control Type

Type Details
No ICs Required

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.

Missing Location Data

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