| Action Date |
Action |
Description |
DEC Staff |
| 8/26/1993 |
Site Added to Database |
|
Former Staff |
| 5/25/1994 |
Update or Other Action |
(Old R:Base Action Code = CORR - Correspondence (General)). |
Former Staff |
| 6/15/1994 |
Update or Other Action |
(Old R:Base Action Code = CORR - Correspondence (General)). |
Former Staff |
| 7/1/1994 |
Update or Other Action |
(Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Phase I RI determines remedial alternatives for impacted areas of the Sitka Naval Operating Base currently used by DOE and PHS. |
Former Staff |
| 11/10/1994 |
Site Ranked Using the AHRM |
Initial ranking. |
Former Staff |
| 12/21/1994 |
Update or Other Action |
Tank removal actions during 8/94-11/94 generated significant c-soil. Full RI due spring of 1995. |
Former Staff |
| 1/17/1995 |
Interim Removal Action Approved |
(Old R:Base Action Code = RAU - Remedial Actions Underway (General)). Letter from COE in regarding interim action and site status of Mt. Edgecumbe site tank removal actions. |
Randy Rice |
| 2/24/1995 |
Cleanup Plan Approved |
(Old R:Base Action Code = LCAR - Corrective Action Review (LUST)). Approval to use HAVE for soils remediation. |
Randy Rice |
| 2/27/2004 |
GIS Position Updated |
Updated lat/long data using GPS readings from Bill Janes 2/13/04 field trip. |
Cliff Walden |
| 7/11/2005 |
Meeting or Teleconference Held |
File review and meeting with principal engineers and environmental consultant to examine contaminants of concern (lead & asbestos), estimated quantity, field screening opportunities and disposal options. Timetable for mobilization was discussed as the ADOT funding is in place and the project manager wants to put the project out for bids. |
Bruce Wanstall |
| 12/12/2005 |
Update or Other Action |
Project oversight transfer from Jaynes to Wanstall; file tranfer from Fairbanks office is pending. |
Bruce Wanstall |
| 1/12/2006 |
Update or Other Action |
file recieved in the Juneau office |
Bruce Wanstall |
| 1/19/2006 |
Update or Other Action |
ADEC UST and CS files located and reviewed for status; the site cleanup is idle under DERP/FUDS Program via USACE. |
Bruce Wanstall |
| 2/2/2006 |
Update or Other Action |
Cost recovery ledger code obtained and added to the site record |
Bruce Wanstall |
| 3/8/2007 |
Update or Other Action |
ADEC reviewed the ADOT&PF Environmental Services Workplan for Restoration Science & Engineering; phone dicussion with RS&E and City of Sitka about work in the utility corridor of Seward Avenue that fronts this site. ADEC sent an email to RS&E endorsing the workplan.
|
Bruce Wanstall |
| 5/16/2007 |
Update or Other Action |
ADEC reviewed results of ADOT&PF geotechnical study of ROW property bordering property lines of the site (Seward and UAS Access Roads). Low levels of petroleum contamination of soil and groundwater were detected in soil boring samples. However, survey data indicate soil or water in this corridor disturbed by excavation would not require special handling as hazardous material. |
Bruce Wanstall |
| 7/14/2007 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approved plan for off-site disposal of the soil stockpile at the Millerville demolition site. Analytical testing of the soil using the Toxic Characteristic Leaching Procedure indicates that the lead-impacted soil is not a hazardous material and that lead will not leach from the soil in concentrations that will pose an unacceptable risk along the migration to groundwater pathway. The soil will be used as fill material in the subsurface grade portion of the closure capping of the Kimshan Landfill by the City of Sitka. Restrictions on excavation are included in the future land use plan for the final surface area of the landfill property owned by the City of Sitka. |
Bruce Wanstall |
| 1/28/2008 |
Exposure Tracking Model Ranking |
Initial ETM ranking reflects uncertainty about historical petroleum spills on the property. The City and Borough of Sitka provides water and sewer to Japonski Island; inividual wells are not present. |
Bruce Wanstall |
| 1/3/2011 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST site created in CSP database for source area USTs, 71387 |
Bruce Wanstall |
| 1/3/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 71387 USTs. |
Bruce Wanstall |
| 12/22/2011 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
Adminstrative action addition for grant reporting purposes.
|
Evonne Reese |
| 4/2/2012 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 71387 USTs. |
Bruce Wanstall |
| 6/6/2012 |
Site Visit |
DEC conducted a site visit to observe and collect photographs at the back of the property where the DOD FUDS investigation identified above ground storage tanks that historically stored aviation fuel for the military base in the 1940s. Designated Area I, surface soil at the site was screened for petroleum contamination; none was identified exceeding soil screening levels. The location is between the school buildings and the large storage water tank; both structures were identified in the site visit and appeared to be in good condition. The area between these structures and the hospital grounds is well overgrown with vegetation and no residual debris was observed. |
Bruce Wanstall |
| 5/28/2013 |
Potentially Responsible Party/State Interest Letter |
DEC letter was sent to the Division Director, Dept. of Education and Early Development, providing notice that due budget shortfalls DEC is finding it difficult to address both state-lead cleanups and contaminated properties owned by various state agencies. Sister agency representatives should consider additional resources beyond DEC annual capital improvement project (CIP) appropriation requests to address their pollution remediation obligations. Assuming agency representatives are able to secure funding, DEC agreed to work closely with sister agencies to address the contamination in the most expeditious and efficient manner possible. |
Bruce Wanstall |
| 7/11/2013 |
Document, Report, or Work plan Review - other |
DEC reviewed and approved by electronic message the Contaminated Material Handling Plan Amendment Revision dated 7/8/2013 completed by Construction Group International with assistance from White Environmental submitted by Nortech Environmental Inc. The email requested a copy of a subsurface soil characterization sampling plan for approval and comment. The former sitka power house is located in the former DoD contaminated site Area A. |
Bruce Wanstall |
| 9/20/2013 |
Exposure Tracking Model Ranking |
Initial and updated ranking with ETM has been completed for the Millerville Housing Demolition Site source area 79402. DEC approved an off-site disposal plan for the stockpile of soil and ash with low level Pb contamination from lead paint. Analytical testing of the soil by the RCRA Toxic Characteristic Leaching Procedure determined the lead-impacted soil is not a hazardous waste and will not leach Pb at levels that pose a risk of migration. Final placement of the soil is beneath the closure capping of the Kimshan Landfill by the City of Sitka. Restrictions on excavation at the landfill in the long term land use plan managed by the City of Sitka. |
Bruce Wanstall |
| 1/6/2014 |
Update or Other Action |
DEC requests ADOT&PF provide a Phase II Report for the MEHS Aquatic Center Project at the former Sitka Powerhouse on the Mount Edgecumbe School contamianted site. DEC stated that approval of the site characterization and cleanup is required in regulation before any new construction begins. Attached to the email was a copy of the Contaminated Material Handling Plan Amendment Revision dated 7/8/2013 completed by Construction Group International with assistance from White Environmental and a blank DEC soil transport form. |
Bruce Wanstall |
| 10/31/2014 |
Update or Other Action |
The ADOT&PF architectural team asked Nortech to contact DEC with questions about what needs to happen with the contaminated material at the former Japonski Island Powerhouse. In the email, Nortech estimated there is about 1,200-1,500 cy of diesel and bunker oil contaminated soil and about 400-450 cy of lead (with a couple hot TCLP samples) contaminated material. The DOT architectural team wants to landfarm all material on MEHS property on Japonski and are looking for the Department’s opinion regarding what would be acceptable plan to ADEC. |
Bruce Wanstall |
| 10/31/2014 |
Update or Other Action |
DEC requested ADOT&PF provide a copy of the pre-demolition Phase II Report on the powerhouse site and a brief report on the results of the field screening and analytical data from actions completed during the demolition of structures. Include the location and condition of contaminated material now stored at the site, where it came from, and the analytical soil confirmation samples collected at the limits of soil removal. Include any contaminated building materials found and where the materials are now stored.
DEC will review and approve a plan to dispose of any contaminated material, including soil, from the site and a site characterization and cleanup sampling plan prior to beginning the work. After approval of the plan and results showing the site is clean to the satisfaction of the Department, then the project can proceed into the construction phase. DEC asks that ADOT&PF provide the requested information within 30 days of the date of the email message (dated today). After review of this material DEC requested a site visit to ensure accuracy of the information provided.
|
Bruce Wanstall |
| 10/31/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 71387 Fuel Storage Tanks. |
Bruce Wanstall |
| 12/17/2014 |
Document, Report, or Work plan Review - other |
DEC approved the 2013 Nortech Report on conditions at the former powerhouse on the MEHS Power House Site and requested clarification on a few matters in a letter sent by regular mail to Nortech and copied to the EED Director of Facilities, the MEHS Building Supervisor, ADOT&PF Statewide and Regional Offices, the State Historic Preservation Officer with DNR and to CS Unit Managers. The Report characterized a volume for removal action of 400 cubic yards of lead contaminated soil and 1,500 cubic yards of POL contaminated soil. An estimated 80% of this material is within the footprint of the new aquatic center. |
Bruce Wanstall |
| 1/16/2015 |
Document, Report, or Work plan Review - other |
DEC reviewed and approved by letter, sent by regular and electronic mail, a letter from Nortech dated January 13, 2015, providing information requested in the DEC Site Assessment Approval letter dated December, 2014. Site Assessment sampling data in the Report are now approved for site characterization and decision making regarding future removal actions at the site as required in 18 AAC 75.360. The information in the Nortech letter confirmed that Nortech personnel performed the sample collection and, in accordance with 18 AAC 75.335, are qualified third party person(s) that used sampling and field screening methods consistent with DEC requirements. The DEC conceptual site model pathway evaluation submitted as an attachment is acceptable, therefore the Report is approved in accordance with 18 AAC 75.335(d). |
Bruce Wanstall |
| 8/27/2015 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 71387 Lead Paint and POL Powerhouse & ASTs. In summary, Site Assessment following demolition of former military structures to allow new development in Area A have identified lead contaminated soil in concentrations that leach lead in excess of the RCRA limit of 5 mg/L. If the soil is disturbed it immediately becomes a hazardous waste that must be shipped to a RCRA Subtitle C landfill, the nearest is in Oregon, or chemically stabilized on-site to eliminate the leachability and monitored for control effectiveness. DRO contaminated soil in excess of Table B2 ingestion/inhalation levels will be encapsulated and capped on-site. BTEX and PAH concentrations are either below instrument detection or migration to groundwater cleanup levels and cumulative totals are unlikely to exceed water quality standards in off-site drainages. |
Bruce Wanstall |
| 9/15/2015 |
Document, Report, or Work plan Review - other |
DEC approved by letter: Corrective Action Plan DEC File Number (1525.38.029) Mt Edgecumbe High School Aquatic Center (Former Sitka Powerhouse) Sitka, Alaska (Plan) dated August 4, 2015 and received by electronic mail on August 4, 2015. Nortech Engineering Inc. completed the Plan as a remedial strategy for the referenced Mount Edgecumbe High School contaminated site to be completed in conjunction with construction of an aquatic center for the State of Alaska Department of Education and Early Development. Remedial selections address mitigation of the direct contact, ingestion, and inhalation exposure pathways to soil, air, and groundwater environmental media in the Powerhouse and AST areas of concern. |
Bruce Wanstall |
| 8/16/2016 |
Site Visit |
DEC inspected the footprint of the aquatic center at the bunker fuel tank site with Mount Edgecumbe, environmental, and engineering staff. Inspected the Millerville soil stockpile site where there is a three thousand cubic yard volume of soil stored between liners waiting for the DOD INPR to remediate. Location is Lot 15E USS 1496, State of Alaska, Dept. of Education. |
Bruce Wanstall |
| 3/7/2017 |
Document, Report, or Work plan Review - other |
DEC has reviewed the Interim Site Characterization Report Mt Edgecumbe School: Aquatic Center (Report), dated January 31, 2017. Nortech Engineering completed the Report for ECI Alaska Architecture, documenting environmental sampling at the referenced Site. The Report documents implementation of the Corrective Action Plan (approved in August, 2014) at the Site for the construction activities completed in 2016 through September, 2016. A considerable amount of sampling was performed to characterize the site and an estimated volume of 11,000 cubic yards of contaminated soil was transferred to stockpiles located at the Millerville site on Japonski Island. In spring 2017 the CAP will complete the excavation, chemical stabilization, encapsulation and environmental assessment of the remaining lead contaminated material at the site. |
Bruce Wanstall |
| 6/19/2017 |
Update or Other Action |
Project manager changed from Wanstall to Duncan. |
Anne Marie Palmieri |
| 6/19/2017 |
Document, Report, or Work plan Review - other |
Reviewed and provided comments on the work plan to transport and dispose of an estimated 20,000 tons of petroleum contaminated soil currently stored in 2 lined and covered stockpiles at the Millerville site in Sitka. |
Danielle Duncan |
| 11/27/2017 |
Document, Report, or Work plan Review - other |
Reviewed the Final Corrective Action and Site Characterization Report this date. The report documents site activities in support of building the aquatic center adjacent to Mount Edgecumbe High School (MEHS). It is important to note that these activities were limited to the subsurface soil environment at the lateral and vertical limits of the construction footprint. No attempts to chase or further characterize contamination in soil or groundwater were made. Although 13,000 tons of petroleum contaminated soil and 350 cubic yards of lead contaminated soil were excavated, stockpiled, and chemically stabilized using ECOBOND® or disposed of at an appropriate facility, remaining contamination in a localized area is above the maximum allowable concentration for diesel range organics and residual range organics. A work plan was requested for further site work and/or characterization. |
Danielle Duncan |
| 9/27/2018 |
Workplan Requested |
Edited and resent the 11/27/17 work plan request letter. |
Danielle Duncan |
| 7/30/2019 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 79402 Former NOB Area A. |
Danielle Duncan |
| 1/25/2022 |
Document, Report, or Work plan Review - other |
On January 25, 2022 ADEC received "Final Compilation Report Sitka Naval Operations Base - Area A (Aquatic Center) Power Plant Containerized Hazardous, Toxic, and Radioactive Waste (CON?HTRW) Formerly Used Defense Site Japonski Island, Sitka, AK" dated December 2021. This report summarizes the compilation of pertinent information from various historical reports into one document to provide an accurate history and understanding of current conditions at the site. The purpose of the compilation is to effectively address regulatory concerns and facilitate decisions regarding future action for the NOB Area A Site. The report will be used to facilitate decisions by the US Army Corps of Engineers (USACE) regarding future actions. |
Rachael Petraeus |
| 1/13/2023 |
Document, Report, or Work plan Review - other |
The ADEC has reviewed the Final Compilation Report, dated December 2021, and is providing comments which should be addressed before the report is re-submitted for approval. |
Flannery Ballard |
| 4/11/2023 |
Site Characterization Report Approved |
The ADEC approved the December 2021 "Final Compilation Report Sitka Naval Operations base - Area A (Aquatic Center_ Power Plant Containerized Hazardous, Toxic, and, Radioactive Waste). The ADEC understands that the contract for revisions has expired and approves the report in its current form but will reserve judgement regarding the validity and specifications of its claims as the ADEC understands a "closeout report" is being drafted. |
Flannery Ballard |
| 4/24/2023 |
Update or Other Action |
Grant Lidren from USACE called with an update to say a final request for closure would be submitted within the month. |
Flannery Ballard |
| 6/21/2023 |
Meeting or Teleconference Held |
A teleconference with USACE Grant Lidren and Wendy Hansen was held this date to discuss a pathway to closure. The ADEC would consider closure with ICs for the petroleum contamination if the Dept. of Education (DEED) would agree to institutional controls on the land. The lead contamination would be separated off and pursued via a new Hazard ID and file number. USACE is going to confer with DEED and will circle back with ADEC about next steps. If DEED does not agree, the site will remain open. |
Flannery Ballard |
