| Action Date |
Action |
Description |
DEC Staff |
| 3/11/2011 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 6/6/2014 |
Update or Other Action |
1994 PA/SI - No surface staining was visible, therefore, not soil samples were collected. However, a run-off water samples and associated soil sample were collected from an area of standing water. The soil sample exhibited a DRO concentration of 27.2 mg/kg. |
Anna Iverson |
| 6/6/2014 |
Update or Other Action |
1999 RI – 2 test pits were excavated and 1 surface soil location was sampled to investigate potential sources of contamination. 1 soil samples was collected in the first test pit (located near run-off water and soil sample collected in 94). The 2nd pit was located near the roadway, with 1 soil sample being collected. No odor or staining was present in either test pit. A soil sample was also collected 70 feet northwest of TP02 and analyzed for GRO, DRO, RRO, metals, pesticides, PCBs, and SVOCs. Arsenic was detected at 22 mg/kg and 19.8 mg/kg in soil samples. The pesticide 4, 4’-DDT was detected at 0.0082 mg/kg. Both concentrations were below regulatory limits; the arsenic concentration was within regional background concentrations. |
Anna Iverson |
| 6/6/2014 |
Update or Other Action |
2011 Decision Document- No fuel or hazardous substances were found at concentrations above applicable cleanup levels, Site DA021 requires no further action under state law and will be designated Cleanup Complete. However, the presence of solid waste has been documented at this site. Removal of solid waste at the site would cost an estimated $15 million and is not warranted. ICs will be put in place to document the location and boundaries of the disposal site and limit future activities that could expose buried wastes, or cause the potential spread of contaminants or placement of solid waste in environmentally sensitive areas. |
Anna Iverson |
| 6/12/2014 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79052 name: Granite Mountain AFS DA021. All pathways are incomplete or De Minimis. |
Anna Iverson |
| 7/22/2014 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Eric Breitenberger |
| 7/22/2014 |
Cleanup Complete Determination Issued |
The Granite Mountain Decision Document applies institutional controls to this site, restricting excavation or movement of solid waste. ICs are documented in the 611th CES Land Use Control Management Plan.
The Decision Document was approved by DEC on January 10, 2011. |
Eric Breitenberger |
| 5/18/2023 |
Document, Report, or Work plan Review - other |
DEC provided comments for the Draft Final Work Plan, Long Term Management at Granite Mountain Radio Relay Station, Alaska Dated May 2023. The Work Plan presents the approach and procedures for long-term management (LTM) at the Granite Mountain Radio Relay Station. The purpose of the LTM project is to conduct institutional control (IC) inspections, a landfill cover inspection at Site OT001, and sign maintenance, as needed, for the following sites to maintain compliance with U.S. Air Force (USAF) and regulatory requirements: DA020, DA021, DP009, DP010, LF002, OT001, SS016, SS017 and SS019. |
Dennis Shepard |
| 8/15/2023 |
Document, Report, or Work plan Review - other |
DEC provided approval for the Final Work Plan, Long Term Management at Granite Mountain Radio Relay Station, Alaska Dated June 2023. The work plan presents the approach and procedures for long-term management (LTM) at the Granite Mountain Radio Relay Station. The purpose of this LTM project is to conduct institutional control (IC) inspections, a landfill cover inspection at Site OT001, and sign maintenance, as needed, for the following sites to maintain compliance with U.S. Air Force (USAF) and regulatory requirements: DA020, DA021, DP009, DP010, LF002, OT001, SS016, SS017 and SS019. |
Dennis Shepard |
| 3/15/2024 |
Long Term Monitoring Workplan or Report Review |
DEC provided comments for the 2023 Long-Term Management Report Granite Mountain Radio Relay Station Sites DA020, DA021, DP009, LF002, OT001, SS016, SS017, and SS019 (dated February 2024). Visual inspections were conducted at the Lower Camp Area sites (DA021 and DP010) on July 5, 2023 and at Upper Camp Area sites (DA020, DP009, LF002, OT001, SS016, SS017, and SS019) on September 16, 2023. Landfill caps and other surface coverings were found to be in good condition. Institutional Control (IC) signage was inspected and signs were repaired and/or replaced as needed with the exception of site DA021 which was recommended for repairs at the next LTM inspection in 2028. |
Brian Watts |
| 7/5/2024 |
Long Term Monitoring Workplan or Report Review |
DEC provided responses to comments for the 2023 Long-Term Management Report Granite Mountain Radio Relay Station Sites DA020, DA021, DP009, LF002, OT001, SS016, SS017, and SS019 (dated May 2024). The report describes long-term management activities completed July 5 and September 16, 2023. All comments were accepted, pending a final comment backcheck to the requested final report. |
Brian Watts |
| 8/20/2024 |
Long Term Monitoring Workplan or Report Review |
DEC provided approval for the Final 2023 Long-Term Management Report Granite Mountain Radio Relay Station Sites DA020, DA021, DP009, LF002, OT001, SS016, SS017, and SS019 (dated August 2024) to the U.S. Air Force. Activities consisted of a visual inspection, sign repair or replacement, and photo documentation of each site. The only institutional control/land-use control recommendation was to install an institutional control sign at DA021 during the long-term monitoring work planned for 2028. |
Erica Blake |
