| Action Date |
Action |
Description |
DEC Staff |
| 10/27/2010 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 10/28/2010 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 78971 name: Petroleum-Stained Soil |
Todd Blessing |
| 11/5/2010 |
Potentially Responsible Party/State Interest Letter |
DEC staff submitted a potential responsible party letter to Alison Smith of the Municipality of Anchorage's Heritage Land Bank. |
Todd Blessing |
| 2/8/2012 |
Meeting or Teleconference Held |
DEC staff discussed the status of the site with Alison Smith of Municipality of Anchorage's Heritage Land Bank. Alison agreed to hire a consultant to develop a work plan to define the nature and extent of contamination. |
Todd Blessing |
| 6/5/2012 |
Site Characterization Workplan Approved |
DEC staff reviewed and approved of BGES "Work plan for Site Characterization Activities; Municipality of Anchorage, 3224 Mountain View Drive, Anchorage, Alaska." Site characterization activities will consist of the advancement of soil borings and installation of
monitoring wells for the collection and analysis of soil and groundwater samples to evaluate the extent of contamination, if present, at the subject property. To evaluate the extent of contamination BGES will perform the following activities:
• Conduct utility locates;
• Advance seven soil borings, collect and analyze up to two soil samples from each soil boring;
• Install a monitoring well in three of the soil borings;
• Survey the tops of casings of each monitoring well;
• Develop each monitoring well;
• Collect a groundwater sample from each monitoring well;
• Submit the soil and groundwater samples for laboratory analyses; and,
|
Todd Blessing |
| 2/12/2013 |
Site Characterization Report Approved |
Staff reviewed BGES report titled "Site Characterization Report 3224 Mountain View Drive Anchorage, Alaska", dated November 2012. This report documented the sampling of soil and groundwater from the subject property. Visual and olfactory evidence of contamination were noted in soil borings SB4, MW1-2, MW1A, MW1B, and MW1C. Elevated levels of DRO, benzene, polynuclear aromatic hydrocarbons, and PCBs were detected. No contaminants of concern were detected at elevated levels in groundwater samples collected from three monitoring wells. Groundwater was determined to flow northwest. |
Todd Blessing |
| 12/15/2013 |
Update or Other Action |
Received request from MOA for DEC Brownfield Assessment and Cleanup to assist with assessment of site conditions as part of reuse plan for property. |
John Carnahan |
| 2/21/2014 |
Brownfields Award |
FY 2015 EPA State and Tribal Response Program (STRP) funds $46,381 awarded to the Municipality of Anchorage (MOA) for a property assessment and soil/groundwater sampling of 3224 Mountain View Drive, Anchorage. NTP# 18803603025. |
Cascade Galasso-Irish |
| 5/28/2014 |
Update or Other Action |
Concurrence received from the State Historic Preservation Officer on 5/28/14 that assessment activities proposed by DEC for the site will affect no historic properties. The activities include using a drill rig to take soil cores to the depth of groundwater and sampling three existing groundwater monitoring wells. These activities are planned for Summer 2014. |
Melinda Brunner |
| 4/23/2015 |
Document, Report, or Work plan Review - other |
Reviewed the Site Characterization Report. The three existing monitoring wells were sampled for GRO, DRO, VOC, PAH, and PCB. GRO, DRO, and PCB were not detected in any of the samples. There were detections of PAH and VOC in the samples but they all less than the Limit of Quantitation. The static water table was higher than the screened interval of the wells and groundwater was found to flow toward west northwest. Eight borings were advanced, but none were completed as monitoring wells. All were analyzed for DRO, GRO, RRO, and BTEX. DRO exceeded migration to groundwater cleanup levels in 4 of the borings (B9, B10, B11b, and B12), with concentrations up to 7,570 mg/Kg. Benzene was detected in excess of migration to groundwater cleanup levels in B10 and B11b. 1-Methylnaphthalene and 2- Methylnaphthalene were detected in B9 and B10 above cleanup levels. Concentrations exceeding migration to groundwater cleanup levels collected from the soil/water interface in B9 and B10 suggest that there may be impacted groundwater on the upgradient side of the lot. Both borings are near MW1-C, which has not been impacted by DRO and detected concentrations of PAH well below cleanup levels. B10 was placed nearest suspected PCB contamination and sampled at four depths. PCB was not detected in any of the samples. PCB was detected in B8, B11b, and B12 but was well below cleanup levels. |
Lisa Krebs-Barsis |
| 6/3/2015 |
Meeting or Teleconference Held |
Met with Heritage Land Bank to discuss the site and paths to closure. |
Lisa Krebs-Barsis |
| 6/19/2015 |
Update or Other Action |
Filed a Notice of Environmental Contamination (NEC) for the property. The NEC remains in effect until a written determination from ADEC is recorded that states that soil and groundwater at the site have been shown to meet the most stringent cleanup levels in 18 AAC 75 and that off-site transportation of soil and groundwater is not a concern. |
Lisa Krebs-Barsis |
| 1/19/2017 |
Meeting or Teleconference Held |
Teleconference to discuss remaining data gaps at the site location with MOA. Discussion of location and how may monitoring wells needed to capture remaining data gaps. MOA's consultant will use this information to prepare a work plan designed to move this site to closure. |
Darren Mulkey |
| 4/11/2017 |
Document, Report, or Work plan Review - other |
Reviewed work plan for 3224 Mountain View Drive. The objective of the work is to fill data gaps that remain at the site following previous site characterization efforts. A site reconnaissance effort will evaluate the status of existing monitoring wells at the site. Two soil borings will be installed and sampled then completed as monitoring wells. The objective of soil sampling is to evaluate the extent of contamination near previous sample location Q84, where contaminants were previously detected above cleanup levels. The objective of groundwater sampling is to evaluate the potential migration to groundwater of contaminants found in soil and if contaminants in groundwater may be migrating off-site. |
Bill O'Connell |
| 2/1/2018 |
Document, Report, or Work plan Review - other |
ADEC Reviewed the "Groundwater Monitoring Well Decommissioning, 3224 Mountain View Drive..." This project consisted of decommissioning five groundwater monitoring wells. Wells MW-1C, MW2-A, MW-3, MW-4, and MW-5 were decommissioned in accordance with ADEC guidance in September 2017. |
Chelsy Passmore |
| 6/28/2019 |
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 MOA Commercial Property -3224 Mountain View Drive, located in Anchorage, Alaska. 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 as long as the institutional controls are maintained and effective and no new information becomes available that indicates residual contamination poses an unacceptable risk. |
Chelsy Passmore |
| 7/3/2019 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Chelsy Passmore |
