| Action Date |
Action |
Description |
DEC Staff |
| 10/12/2004 |
Site Added to Database |
Electrical generator and diesel tank farm DRO release contamination. Barrel storage area not sampled. |
Bruce Wanstall |
| 10/12/2004 |
Site Ranked Using the AHRM |
Drinking water source for residential camp is unlikely to be affected by contaminant releases at camp genset and fuel tank farm source areas. |
Bruce Wanstall |
| 10/12/2004 |
Update or Other Action |
PA results discussed with environmental consultant CDI Inc; DEC site inspection is needed this fall or spring; lab analysis of site characterization soil samples due next week. |
Bruce Wanstall |
| 11/3/2004 |
GIS Position Updated |
GIS latitude longitude data entered. Metadata include NAD 27 calibrated Topozone Pro mapping utility projected on USGS 1:50,000 topographic map saved at: G:\SPAR\Spar-Contaminated Sites\38 Case Files (Contaminated Sites)\1532 Calder\1532.38.001 Calder Mine |
Bruce Wanstall |
| 11/19/2004 |
Cleanup Level(s) Approved |
Cleanup Final Report data reviewed and evaluated for exposure pathways. Method Two migration to groundwater cleanup levels for the over 40 inch zone approved for the site. |
Bruce Wanstall |
| 11/22/2004 |
Update or Other Action |
Report review for Site Characterization approval; study had limited scope. Problems with sample lab report QA/QC are present but still contribute data on site conditions. |
Bruce Wanstall |
| 11/23/2004 |
Update or Other Action |
Property data obtained; Review interim removal cleanup of Tank Farm, Gen-set and barrel storage sites; estimate inaccessible volume and location for deed notice/NFRAP. |
Bruce Wanstall |
| 11/24/2004 |
Interim Removal Action Approved |
Excavation of accessible soil at the Gen Set site and Tank Farm approved. |
Bruce Wanstall |
| 12/6/2004 |
Update or Other Action |
Site Investigation Report by prospective purchaser was received by the DEC. Scope of investigation for petroleum release area was property-wide and provides evidence of new contamination areas of concern not investigated by the facility operator. |
Bruce Wanstall |
| 12/8/2004 |
Update or Other Action |
Corrective Action Plan for the spill sites identified by PNG Environmental discussed with consultant. |
Bruce Wanstall |
| 2/4/2005 |
Update or Other Action |
Review PNG Environmental Site Investigation; additional oil spill sites identified by observation, sampling and laboratory analysis; tank farm gen-set and fuel pump areas require subsurface investigation but buried power cable may limit the range of site investigation. |
Bruce Wanstall |
| 6/21/2005 |
Site Characterization Report Approved |
Determination letter sent providing Site Characterization approval of selected areas with request for cleanup of additional sites identified in the PNG Environmental Report. |
Bruce Wanstall |
| 11/1/2007 |
Exposure Tracking Model Ranking |
The Calder Mine Contaminated Site Cleanup Reports were reviewed to determine the site status using the environmental tracking module. Diesel contamination of soil at the fuel tank farm and camp generator was cleaned up and moved to a biocell. The migration of residual diesel soil contamination to surface water is a concern at both sites but neither is likely potable and as such is not an ingestion exposure risk. Site controls by ongoing industrial land use plan are suggested. |
Bruce Wanstall |
| 11/21/2007 |
Update or Other Action |
DEC letter sent to SeaCal LLC requesting that a current assessment plan be submitted for the biocell and surface water drainages from the genset and tank farm sites where residual contaminated soil is documented |
Bruce Wanstall |
| 10/31/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78276 fuel tank farm. |
Bruce Wanstall |
| 10/31/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78277 Camp Generator. |
Bruce Wanstall |
| 3/3/2015 |
Potentially Responsible Party/State Interest Letter |
DEC letter was sent by regular and electronic mail to the current owner/operator of the Calder Mine Facility on Prince of Wales Island requesting a plan be submitted for approval that will schedule soil sampling of the contaminated soil bioremediation cell. The purpose of the site activity is to ensure that the pollution is contained and that petroleum contamination is not presenting a risk of exposure that could affect human health and safety or the environment. |
Bruce Wanstall |
| 4/6/2015 |
Update or Other Action |
Owner CRC contacted DEC on March 11 acknowledging the recent letter and today Hydro Con Ltd. contacted DEC to begin planning environmental sampling site activity in 2015.
|
Bruce Wanstall |
| 5/19/2015 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Bruce Wanstall |
| 5/19/2015 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78276 fuel tank farm. |
Bruce Wanstall |
| 6/22/2015 |
Document, Report, or Work plan Review - other |
DEC approval letter with comment was sent by regular and electronic mail to Craig Hultgren (HydroCon), environmental consultant for Columbia River Carbonates, owner of the Calder Mine Facility on Prince of Wales Island. The letter approved plans to investigate the extent of subsurface contamination at the Power Plant and Fueling Station following removal actions of contaminated soil to the Bioremediation Cell area. Any contaminated soil present at those release sites will be transferred and placed between liners as a new Bioremediation Cell to be managed with the other three Biocells. The total volume of soil under current remedial treatment from past cleanup removal at the facility is 216 cubic yards. DEC requested BTEX compounds and a field duplicate every ten samples collected be added to the sampling plan and a formal Bioremediation Cell Management Plan (with tilling, sampling and reporting schedule) be added as an attachment to the Environmental Report subsequent to the current site investigation by HydroCon. |
Bruce Wanstall |
| 12/15/2015 |
Document, Report, or Work plan Review - other |
DEC reviewed sent an approval and comment letter for Remedial Excavation and Soil Stockpile Sampling Report Calder Limestone Mine, Prince of Wales Island, Alaska (Report), dated October 25, 2015. HydroCon LLC completed the Report documenting contaminated soil removal and sampling, and contaminated soil stockpile management at the referenced Site for the facility owner, Columbia River Carbonates. A copy of the letter was sent by regular and electronic mail. HydroCon promptly provided the information DEC requested and will proceed with additional work at the Site in 2016. |
Bruce Wanstall |
| 4/9/2016 |
Site Visit |
DEC met with facility owner Columbia River Carbonates Manager Zachery Twist at the Calder Mine Site to discuss the HydroCon Remedial Excavation and Soil Stockpile Sampling Report dated October 25, 2015. DEC inspected the former power plant site where contaminated soil removal and sampling by HydroCon took place, the contaminated soil stockpiles, and the fuel tank farm area where POL contamination remains trapped under structures. |
Bruce Wanstall |
| 7/21/2016 |
Document, Report, or Work plan Review - other |
DEC reviewed and approved a Remedial Excavation and Soil Sampling Report by HydroCon Inc. for the Calder Mine Facility owned by Columbia River Carbonates. A remaining area of concern is underneath the diesel aboveground fuel storage tank at the Fueling Station; HydroCon estimated the volume at 560 cubic yards that is not yet characterized. Two bioremediation cells are under an active plan at the site; they will be sampled by HydroCon in the fall, 2016. |
Bruce Wanstall |
| 12/30/2016 |
Document, Report, or Work plan Review - other |
DEC Juneau Office has reviewed: 2016 Supplemental Characterization and Soil Stockpile Sampling Report (Report), dated November 1, 2016, and received on 11/21/2016. HydroCon LLC completed the Report documenting sample collection and laboratory testing under Project Number 2015-010 for Columbia River Carbonates (CRC). DEC requested stockpile sampling resume in 2017 and additional assessment sampling be performed in the future when physical structures in the Camp Generator (water tank and water treatment facility) and Fueling Station (western-most AST) areas are either moved or replaced.
|
Bruce Wanstall |
| 12/18/2017 |
Update or Other Action |
Sent a request for a work plan today via certified mail # 7014 2120 0001 4210 1503. Request to address remaining soil contamination and possible groundwater contamination. |
Danielle Duncan |
| 3/1/2018 |
Document, Report, or Work plan Review - other |
The Alaska Department of Environmental Conservation (ADEC) Juneau Office has reviewed the work plan titled: Draft 2018 Soil and Groundwater Sampling Work Plan – Revision 2. The work will include investigating and sampling areas of concern documented in prior studies that may have been excavated without an approved work plan, delineating the lateral extent of contamination at the Camp Generator area, assessing surface water quality at the camp generator area, and installing a monitoring well at the fueling station to assess groundwater quality. |
Danielle Duncan |
| 7/17/2018 |
Update or Other Action |
The drill rig broke down and they are waiting on parts. ETA on parts is August 6th. The consultant will postpone their trip and fly up once the rig is operational again. |
Danielle Duncan |
| 12/26/2018 |
Site Characterization Report Approved |
Approved the Soil and Groundwater sampling Report – 2018 this date. All of the samples were collected from a foot belowground and the groundwater sample indicated groundwater contamination above ADEC cleanup levels. |
Danielle Duncan |
| 5/10/2019 |
Document, Report, or Work plan Review - other |
Provided comments and guidance documents re: Draft 2019 Soil and Groundwater Work Plan. |
Danielle Duncan |
| 6/7/2019 |
Site Characterization Workplan Approved |
Approved the 2019 Soil and Groundwater Sampling and Remedial Action Work Plan this date. The work entails excavations, groundwater monitoring well installation and sampling, and biocell sampling. |
Danielle Duncan |
| 11/6/2019 |
Document, Report, or Work plan Review - other |
Reviewed the Draft 2019 Site Investigation Report, dated October 22, 2019. Site activities were completed in early August 2019 and generally consisted of stockpile management and sampling, additional remedial action, monitoring well installation, and groundwater monitoring.
Before sampling the two onsite soil stockpiles, additions of urea (540 pounds to CRC1 and 2,320 pounds to HydroCon) and phosphorus (135 pounds to CRC1 and 580 pounds to HydroCon) were mixed into the two piles to promote biodegradation of the contamination. In total 4 analytical samples were collected from the CRC1 pile and 6 analytical samples were collected from the HydroCon pile. DRO was identified in CRC1 up to 290 mg/kg and in HydroCon up to 440 mg/kg. Both results exceed the ADEC Method Two migration to groundwater (MTG) soil cleanup levels.
Excavations were performed at three locations where soil samples exceeded the cleanup levels in 2018; two at the former fueling station (sample locations CS-6 and CS-8) and one at the camp area (CS-4). Although planned, excavation and/or exploratory test pitting was not performed at locations S16, S17, S18, or CS1, as subsurface utility locates were not accomplished.
The excavation at location CS4 measured roughly 12 feet long, 10 feet wide, and 2 feet deep; CS6 measured 15 feet long, 11 feet wide, and 4 feet deep; and CS8 measured 16 feet long, 9.5 feet wide, and 5 feet deep. Confirmation soil sample results from each location revealed various levels of remaining contamination, all with at least one sample result above the Method Two migration to groundwater (MTG) soil cleanup levels.
Two monitoring wells, MW2 and MW3, were installed during the 2019 effort. The wells were installed using an air rotary drill rig. Soil samples were collected during the advancement every 5 feet. Well MW2 was drilled near the northwest corner of the shop building to a final depth of 39.28 feet. Water was encountered around 30 feet. Well MW3 was installed along the southern end of the shop building, nearest the haul road. The well was installed to a final depth of 14.42 feet. Each well was constructed with a 10 foot screen at the bottom of the well.
Well MW3 was dry and could not be sampled. Former Well MW1 and newly installed Well MW2 were successfully sampled. Results for Well MW2 were all below the ADEC Table C groundwater cleanup levels. The sample collected from Well MW1 had levels of DRO up to 7.4 mg/l.
Recommendations included in the report generally included further management of the now three onsite stockpiles, and further remedial action to remove the last remaining accessible DRO contaminated soil onsite. ADEC sent a letter on 11-6-2019 with comments on the report, and requesting a final version. Response to comments and final report received 12-09-2019.
|
Joshua Barsis |
| 7/15/2020 |
Update or Other Action |
Letter to Calder Mine advising that, going forward, waste from new spills can't be added to any closed or active landfarms (called stockpiles in the reports). About one cubic yard of diesel contaminated soil was spread on the Hydrocon stockpile. |
Lisa Krebs-Barsis |
| 7/21/2021 |
Update or Other Action |
New Project Manager, J. Fix, assigned. |
Julie Fix |
| 8/25/2021 |
Document, Report, or Work plan Review - other |
The draft "2021 Soil and Groundwater Sampling and Remedial Action
Work Plan" was received on this date. Comments were sent to the RP on September 13, 2021. The comments
generally sought to clarify sampling methodology. |
Julie Fix |
| 9/17/2021 |
Site Characterization Workplan Approved |
The approval letter for the revised "2021 Soil and Groundwater Sampling and Remedial Action Work Plan" was sent to the RP via email on this date. The comments were incorporated into the revised work plan. The approved work plan proposes excavating contaminated soil and collecting confirmation
soil samples in the “camp area” and “fueling station area.” Soil samples will also be
collected from the soil stockpile. Groundwater samples will also be collected from three newly installed groundwater monitoring wells in the camp area. Groundwater and soil samples will be analyzed for GRO, DRO, RRO, SVOCs, PAHs, and VOCs. |
Julie Fix |
| 11/2/2021 |
Document, Report, or Work plan Review - other |
The draft “2021 Site Investigation Report” was received on this date. Comments were sent to the consultant after review on December 10, 2021. |
Julie Fix |
| 3/3/2022 |
Meeting or Teleconference Held |
Phone discussion with consultant. Requested more photos of site and 2021 report. Sent follow up email to consultant and RP. |
Julie Fix |
| 4/5/2022 |
Site Characterization Report Approved |
"2021" Site Investigation Report" was approved on this date. The report details site activities at three locations on the site including the 'HydroCon2 Stockpile,' the 'camp generator area,' and the 'fueling station area.' Three groundwater monitoring wells were installed and sampled in the 'camp generator area.' Samples were analyzed for GRO, DRO, RRO, VOCs, and PAHs. All results were non-detect or below cleanup levels. Additional excavation at CS4 was not possible due to buried utilities. Remedial efforts at the 'fueling station area' included excavating approximately 16.6 cubic yards of soil from CS-6 and the collection of confirmation samples. The soil samples were analyzed for GRO, DRO, RRO, VOCs, and PAHs. All results were either non-detect or below cleanup levels. Additional excavation at CS8 was not possible due to buried utilities. The 'HydroCon2 stockpile' was treated with urea and phosphorous/potassium and tilled prior to sampling. Samples were analyzed for GRO, DRO, RRO, VOCs, and PAHs. One exceedance of DRO was detected (440 ppm) and all other results were either non-detect or below cleanup levels. The letter also discusses several data gaps that remain at the site that need to be addressed prior to the site being evaluated for closure. |
Julie Fix |
| 7/21/2022 |
Meeting or Teleconference Held |
Teleconference with CSP management, the RP, and the RP's consultant to discuss future site work and a path to site closure. A work plan submittal is expected in late summer. |
Julie Fix |
| 7/28/2022 |
Document, Report, or Work plan Review - other |
The "Draft 2022 Soil and Groundwater Sampling Work Plan" was received on this date. Initial comments sent on 8/29/2022. |
Julie Fix |
| 9/23/2022 |
Site Characterization Workplan Approved |
The revised "2022 Soil and Groundwater Sampling Work Plan" was approved on this date. |
Julie Fix |
| 11/9/2022 |
Document, Report, or Work plan Review - other |
The "2022 Site Investigation Report-DRAFT" was received on this date. Comments were sent to the RP on 1/26/2023 and a revised report with comment responses was received on 3/8/2023. |
Julie Fix |
| 6/1/2023 |
Site Characterization Report Approved |
The revised "2022 Site Investigation Report" was approved on this date. |
Julie Fix |
| 12/7/2023 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78276 fuel tank farm. |
Kelly Ireland |
| 12/7/2023 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78277 Camp Generator. |
Kelly Ireland |
