Action Date |
Action |
Description |
DEC Staff |
7/8/2002 |
Site Characterization Workplan Approved |
Workplan approved to characterize former waterline bedding. |
Bruce Wanstall |
7/15/2002 |
Proposed Plan |
Approval granted to screen stockpile soil to 2" material. |
Bruce Wanstall |
7/15/2002 |
Site Added to Database |
Petroleum release to soil. Source not determined. |
Bruce Wanstall |
7/19/2002 |
Site Ranked Using the AHRM |
Preliminary ranking. |
Bruce Wanstall |
10/10/2002 |
Update or Other Action |
Cleanup Action Final Report received. Soil samples from the excavation of the abandoned waterline had concentrations below default Method 2 cleanup levels Approximately 480 cubic yards of soils screened to 2 inches or less is temporarily stored in a lined containment cell on DOT&PF property adjacent to the Sitka Airport runway on Charcoal Island. |
Bruce Wanstall |
1/24/2003 |
Update or Other Action |
Corrective Action Plan for contaminated soil received. Comments and approval letter for biocell workplan drafted and circulated for SE Ops peer review. Multiple biocells plans are proposed for Charcoal Island properties. |
Bruce Wanstall |
2/4/2003 |
Update or Other Action |
Per telephone request by staff, location map for contaminated soil biocell recieved. |
Bruce Wanstall |
4/3/2003 |
Update or Other Action |
CAP biocell plan approval with comments. Biocell located near end of aircraft runway on Charcoal Isl. Letter copied to G: SPAR/ SparCS/ SE Field Ops/ SE Sites/ Sitka Airport DOT&PF S&C Blg/ Charcoal Isl Biocell Plan |
Bruce Wanstall |
7/17/2003 |
GIS Position Updated |
Site inspection: Global Positioning Source used to obtain latitude and longitude readings based on North American Datum 27: N 57.0544 and W-135.3662. |
Bruce Wanstall |
2/26/2004 |
GIS Position Updated |
Updated lat/long data using GPS readings from Bill Janes 2/13/04 field trip. |
Cliff Walden |
8/26/2004 |
Update or Other Action |
Requested RP till the soil stockpile. |
Bruce Wanstall |
10/27/2004 |
Update or Other Action |
Requested stockpile cover check. |
Bruce Wanstall |
4/21/2005 |
Update or Other Action |
Contact RP to coordinate site visit/ inspection of the Charcoal Island biocell in July. |
Bruce Wanstall |
6/15/2005 |
Update or Other Action |
Message sent requesting stockpile sampling plan. Reply stated that a plan is being developed in conjunction with the Tongass Avenue Road Project on Japonski Island from which contaminated soil is expected to be found. |
Bruce Wanstall |
8/4/2006 |
Update or Other Action |
Ledger code updated. |
Bruce Wanstall |
5/9/2007 |
Update or Other Action |
ADEC held discussion with ADOT about land status of Charcoal Island HOT USTs and the ADOT S&C Blg contaminated soil stockpiles. ADOT will look into the status of soil stockpiles in the area and confirmed that the land is State-owned and future use is a runway safety zone covered in asphalt. |
Bruce Wanstall |
7/5/2007 |
Exposure Tracking Model Ranking |
The controlling pathway is direct contact with subsurface soil. The exposure route to industrial workers and occasional visitors is minimized by an asphalt cap over the utility trench footprint where soil removal recovery to most conservative migration to groundwater cleanup levels was successful. |
Bruce Wanstall |
10/8/2007 |
Update or Other Action |
Review and comment on the draft workplan for soil stockpile assessment. Approval for the final version of the workplan was sent by email. |
Bruce Wanstall |
2/5/2008 |
Document, Report, or Work plan Review - other |
ADEC evaluated the draft 2007 UST Site Assessment Report by SLR. The data and conceptual site model meet CS quality assurance criteria. In fall 2006,DEC provided approval for ADOT&PF engineering staff to land spread the treated stockpile soil located at the southeast end of the main aircraft runway on Charcoal Island as sub base in an airport construction project. In 2007, the DEC term contractor SLR visited the site and confirmed that the stockpile footprint was thoroughly vegetated and DEC waived collecting samples for residual contamination of native soil. |
Bruce Wanstall |
3/12/2009 |
Final Cleanup Report Reviewed |
Final Reports for the Sand and Chemical Building and Mountain Aviation site cleanups were reviewed for requirements in 18 AAC 75.375 and 75.380 and are adequate to consider a cleanup complete - institutional control determination. |
Bruce Wanstall |
2/7/2012 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 74842 Heating oil tank and Mobile Truck. |
Bruce Wanstall |
2/29/2012 |
Cleanup Complete Determination Issued |
Based on the information provided to date, the DEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment. No future remedial action is required.his determination is in accordance with 18 AAC 75.380(d) and does not preclude DEC from requiring additional assessment and/or cleanup action if future information indicates that this site may pose an unacceptable risk to human health or the environment. |
Bruce Wanstall |
3/5/2012 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Bruce Wanstall |
3/5/2012 |
350 Determination |
An area-wide 350 determination restricting installation of water wells, including the Sitka Rocky Gutierrez Airport where the Maintenance Station is located, has been agreed upon by State-owned property managers (including ADOT&PF) on Japonski Island, the City and Borough of Sitka, and the general public.
|
Bruce Wanstall |
3/12/2012 |
Institutional Control Update |
Project manager changed from Wanstall to IC Unit. |
Evonne Reese |
3/18/2016 |
Institutional Control Compliance Review |
IC compliance review conducted. IC reminder letter drafted and scheduled to send out next year as part of this site's five-year review. |
Kristin Thompson |
5/18/2017 |
Institutional Control Compliance Review |
IC compliance review conducted. ICs Verification letter issued. Reminder system set for future follow-ups to occur every three years. |
Kristin Thompson |
7/16/2024 |
Institutional Control Compliance Review |
IC compliance review completed on this date. An IC reminder letter was e-mailed to the landowner. The next review will be in five years’ time. |
Gaige Robinson |