| Action Date |
Action |
Description |
DEC Staff |
| 8/24/2007 |
Document, Report, or Work plan Review - other |
ADEC sent Lori Roy (611 CES/CEVR) letter approving five non-qualifying sites to administratively close these sites based on the 2006 PA/SI. ADEC approved the request. Site should be assigned a "non-qualifying" status. The Air Force and ADEC have discussed the status of Sites DA032, DAO3S, SAO4O, DAO41, and DA042 on several occasions during the past year. PA/SI findings were presented in the Finial Work Plan - PA/SI, KSAS (dated 5 M~arch 2007) and the Draft Report SI, KSAS (dated 25 April 2007). Based on our review of these two documents, ADEC has determined that these five sites are non-qualifying (NQ). This determination may be reviewed and modified in the future if new information becomes available which indicates that the Air Force is responsible for the presence of contamination or exposure that may cause a risk to human health or the environment.
Please note that the department review and concurrence on this request is to ensure that the work is done in accordance with State of Alaska environmental conservation laws and regulations. While the department may comment on other state and federal laws and regulations, our concurrence on this request does not relieve responsible persons from the need to comply with other applicable laws and regulations. |
Jeff Norberg |
| 8/31/2007 |
Update or Other Action |
An unidentified cylinder/tank was found and will be investigated under
the Military Munitions Response Program (MMRP) prior to any sampling that may
take place. Explosive Ordnance Disposal (EOD) has been contacted. |
Jonathan Schick |
| 12/10/2007 |
Site Added to Database |
Site added to the database. |
Mitzi Read |
| 12/12/2007 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Jonathan Schick |
| 4/15/2008 |
Site Visit |
ADEC staff conducted a site visit to a large number of pertinent sites at King Salmon Air Station over a 3 day visit. Sites were inspected for any visible evidence of contamination and potential sampling locations. ADEC staff was accompanied to all of the sites by the Project managers from the USAF and thier contractors. A RAB meeting was held during the site visit. |
Jonathan Schick |
| 4/15/2008 |
Update or Other Action |
ADEC staff participated in a Restoration Advisory Board meeting at the King Salmon Air Station. Community members are encouraged to attend and view a presentation of the most recent sampling program where data is available. Main topics discussed were the TCE plume that is in Groundwater Zone 1 where a treatibility study is being conducted to see the possible influence of adding an enhanced in-situ bioremediation product that is engineered to break down chlorinated solvents. The other main topic discussed was the results from the basewide monitoring event at all of the Groundwater Zones from 2007. |
Jonathan Schick |
| 10/21/2008 |
Site Visit |
ADEC staff took part in a site visit to a number of pertinent sites at King Salmon Air Station over a 2 day visit. Sites, especially the pending Multi Site Inspection sites, were inspected for any visible evidence of contamination and potential sampling locations as the work plans are still being formulated. ADEC staff was accompanied to all of the sites by the Project managers from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-SIte inspection project, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for April 21, 2009. |
Jonathan Schick |
| 4/21/2009 |
Update or Other Action |
ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to become more familiar with the layout and topography of the area. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-Site inspection project which is entering Phase II this summer, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for October, 2009. |
Jonathan Schick |
| 10/26/2009 |
Site Visit |
ADEC staff traveled to King Salmon with the new RPM for the King Salmon Air Station to tour the sites and look at the excavations that were completed during the 2009 field season. Several sites were inspected and overall the sites appeared to be secured with orange snow fencing and visqueen covering the stockpiles to prevent ponding and migration of contaminants. While in King Salmon staff attended and participated in a Restoration Advisory Board Meeting to meet with the public of King Salmon and discuss the results from the latest round of base-wide sampling and to discuss the progress of the excavations that were conducted during the summer.
|
Jonathan Schick |
| 10/20/2010 |
Update or Other Action |
ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to observe some of the work that is being conducted to remove POL impacted soils and PCB impacted soils at OT010. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, remedial action cleanup programs, and management of the IDW and soil in the biocells set up to add oxygen to the soil matrix to aid the degradation of the petroleum hydrocarbons. The next RAB meeting is scheduled for April 2011. |
Jonathan Schick |
| 6/23/2011 |
Update or Other Action |
Contaminated Sites Staff recieved the Final Version of the Work Plan for Monitoring Well Decommissioning and Repair for all sites across King Salmon Air Station. The Comments from the Draft Version of the Plan were addressed in the response to comments and in the Final Version of the document. |
Jonathan Schick |
| 6/26/2012 |
Update or Other Action |
The site was not addressed in the Multi-Site Inspection because of the concerns about the cylinder that is buried near the fence line. IT has also not been included in the MMRP Remedial Investigation and should be investigated and cleared during the MMRP work so that it can then be investigated further through the restoration program. |
Jonathan Schick |
| 8/14/2013 |
Update or Other Action |
Submit approval letter for MMRP Non-Time Critical Removal Action (NTCRA) at King Salmon Air Station. The work plan includes the inspection and removal of the "suspect" cylinder at the site. |
Guy Warren |
| 2/21/2014 |
Update or Other Action |
Receive Final Technical Memorandum regarding the investigation at DA032 to determine nature of "unknown" cylinder. Upon excavation it was discovered that the cylinder was imbedded in concrete and had significant electrical protection. Based on 45 years of EOD/UXO experience the investigation team concluded that the item is not munitions related. |
Guy Warren |
| 10/31/2016 |
Update or Other Action |
ADEC sent a letter requesting additional action on nine sites within the King Salmon Divert. DA032 was included in this letter stating that the UXO issue has been cleared and the remediation project needs to move forward. |
Holly Weiss-Racine |
| 3/13/2017 |
Document, Report, or Work plan Review - other |
Staff provided comments on the 3rd Five-Year Review for groundwater zones (GWZ) 1 through 7.
Main comments were to delete all references to GWZ 5 and 7 which do not have a record of decision (ROD) finalized and signed and therefore, do not have a selected remedy to conduct a review in accordance with EPA Guidance (OSWER No. 9355.7-03B-P June 2001). There were several RODs signed which approved a 18 AAC 75.350 determination that groundwater need not be considered a drinking water source in the "A-Aquifer" and therefore, by default the aquifer should not be monitored for any constituents. An exception is made where groundwater contaminants (i.e. benzene, ethylbenzene, toluene, and total xylenes) are causing a surface water quality criteria exceedance (i.e. total aromatic hydrocarbons). In this case monitoring for surface water quality criteria in GW makes sense. However, monitoring for GRO, DRO, RRO in GW does not make sense since there are no surface water quality criteria for GRO, DRO or RRO in surface water.
See site file for additional information. |
Louis Howard |
| 5/15/2018 |
Document, Report, or Work plan Review - other |
ADEC approves the 'Final 2017 Five-Year Review, King Salmon Divert, Naknek Recreation Camp I, Naknek Recreation Camp II, Alaska, November 2017' in a letter dated May 15, 2018. Land Use Controls have not been fully implemented at any groundwater zones at King Salmon Divert. Recommendations include: finalizing the decision document for Zone 7, determine the extent of drinking water wells at Lake Camp (number of wells, depth of wells, and groundwater gradient), and fully implement LUCs by updating public land records for non-USAF owned properties. The next five-year review will be completed in 2022. |
Sammi Castle |
| 10/3/2018 |
Document, Report, or Work plan Review - other |
ADEC approved the Final 2017 Long Term Management Report for the King Salmon Divert on this date. Zone 1 recommendations include continuation of monitoring with no changes. Petroleum hydrocarbons and TCE were detected above cleanup levels in groundwater in Zone 2; recommendations include continued monitoring and updating cleanup levels in next 5 Year Review. In Zone 3, low levels of TCE and benzene were detected in the March 2018 SBTS sample, and gabions in King Salmon Creek are being pulled out of alignment; recommendations include reducing sampling at the North and South Bluffs to once every five years. In Zone 4, petroleum hydrocarbons were detected above cleanup levels in the A-aquifer but below cleanup levels in the B-aquifer; recommended that monitoring should continue due to drinking water wells and other sensitive receptors lying downgradient of this site. Monitoring will continue in Zone 5 without changes. Inspections of the Rapids Camp and Landfill were conducted in Zone 6; there were no observations of noncompliance at the landfill. Two of eight wells in Zone 7 exceeded RAO for DRO; 2015 soil samples from three LF01 locations indicated DRO contaminated soil above cleanup levels - this should be excavated and treated. |
Sammi Castle |
| 12/18/2018 |
CERCLA Proposed Plan |
ADEC received the Draft Proposed Plan for King Salmon Divert, Site OT027, Groundwater Zone 1, on November 7, 2018. This proposed plan details site characterization and history, summarizes site risks, outlines remedial action objectives, and evaluates seven remedial alternatives. ADEC's comments on the draft plan were sent on this date. |
Sammi Castle |
| 5/18/2023 |
Site Visit |
DEC conducted a site visit with the U.S. Air Force. |
Ginna Quesada |
