| Action Date |
Action |
Description |
DEC Staff |
| 11/15/1995 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77867 ADD; |
Former Staff |
| 11/15/1995 |
Site Added to Database |
|
Former Staff |
| 11/16/1995 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU; Corrective action begun during tank closure/site assessment via installation of bioventing network in the insitu LUST impacted soils. Hot air from generator waste heat used for bioventing. Additional corrective action done on excavated soil via construction of a biocell circa June 28, 1996. : LCAU date changed DB conversion |
Former Staff |
| 1/17/1996 |
Release Investigation |
SA2A; SA done on 10-30-95 concurrently with tank closure. Bioventing installed insitu at the same time. |
Former Staff |
| 5/3/1996 |
Update or Other Action |
UPD; Ltr. sent to consultant (Smith Bayliss LeResche) re: review of SA/RI/CA which ok'd the actions to date: stockpile of contam. soils excavated from UST; installation of hot air bioventing system. Also, ltr noted the non-UST contamination encountered and via cc notified ADEC Contaminated Sites section of its existence. Ltr requested details on operation & monitoring of bioventing, and design of proposed biocell. |
Former Staff |
| 8/8/1996 |
Update or Other Action |
UPD; Provided a letter to consultant (R.Rice) re: DEC received no comments during public comment period advertised in the Chilkat Valley News on 6/27 & 7/3 1996 re: construction & use of the bioremed. cell. Advised consultant that operation of the cell can proceed as planned. |
Former Staff |
| 10/1/1996 |
Long Term Monitoring Established |
LTM; Report dated 10/1/96 received from the consultant was a baseline report of the contamination status in the bio treatment cell (first sample taken of the soils in the biocell - done on July 5, 1996). |
Former Staff |
| 11/20/1997 |
Update or Other Action |
ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: HAINES LIGHT & POWER CO. INC. |
Former Staff |
| 9/20/2001 |
Long Term Monitoring Established |
Cleanup actions complete. Air-sparging system for soil operating. Groundwater samples for PCBs, DRO, and RRO will be collected quarterly. Soil samples for DRO and RRO will be collected semi-annually. |
Bruce Wanstall |
| 10/2/2001 |
Update or Other Action |
Changed Project Manager from Paul Horwath to Anne Marie Palmieri |
Cynthia Pring-Ham |
| 6/4/2004 |
Update or Other Action |
Project manager transition site vist. GPS reading obtained. |
Bruce Wanstall |
| 9/7/2005 |
Document, Report, or Work plan Review - other |
Review of Contaminated Site and Underground Storage Tank files to organize and assume cleanup project management. Update lat/ long data to NAD 83 and add property description data to both CS, LUST and DEC filing database records. |
Bruce Wanstall |
| 5/18/2006 |
Document, Report, or Work plan Review - other |
2005 Montioring Well Sampling Report data reviewed. Approval letter sent to the RP with request to continue with current CAP. |
Bruce Wanstall |
| 12/19/2006 |
Update or Other Action |
2006 Groundwater Monitoring Report was evaluated and a comment letter was sent to the Haines Light & Power. Full acceptance of site data for 2004, 2005 & 2006 ground water monitoring depends upon delivery of missing QC data on SGS lab reports for those years. Letter cites limitations on all the 2006 DRO data. |
Bruce Wanstall |
| 7/11/2007 |
Exposure Tracking Model Ranking |
Initial and final ranking determined that migration to groundwater pathway is low risk and the controlling exposure pathway is subsurface soil; contaminants are stabilized but need site control measures placed on future property use. |
Bruce Wanstall |
| 1/25/2008 |
Update or Other Action |
Payment of $750.80 from Alaska Power & Telephone was received by ADEC for site cleanup and monitoring oversight expenses. |
Bruce Wanstall |
| 1/31/2008 |
Update or Other Action |
ADEC discussed data quality objectives cited in the ADEC letter dated December, 2006 with AP&T manager Danny Gonce. Annual ground water sampling at the Haines Power Plant took place in the fall 2007. The annual GMR data report is in progress by consultant. |
Bruce Wanstall |
| 2/12/2008 |
Update or Other Action |
2007 Annual Groundwater Monitoring Report data meet quality assurance standards. PCB concentrations in MW-1 were again non-detect in 2007, but increased in MW-2 from 0.0166ppm in 2006 to 0.0261ppm in 2007 and also increased in MW-3 from non-detect in 2006 to 0.000692ppm in 2007. An increasing trend is indicated in MW-2 PCB samples and concentrations are above the 0.0005ppm action level. DRO concentration in MW-1 is up from 1.08ppm in 2006 to 4.8ppm in 2007 and increased in MW-2 from 1.32ppm in 2006 to 1.43ppm in 2007. Field duplicate sample variation in DRO data was 4% while PCB duplicate sample variance in data was again off by an order of magnitude. Annual ground water monitoring will continue at the Haines Plant in 2008. |
Bruce Wanstall |
| 7/14/2010 |
Document, Report, or Work plan Review - other |
ADEC approves 2008 Monitoring Well Sampling by Nortech meeting ADEC field and laboratory quality assurance requirements. The current data do not indicate a decreasing trend in ground water contamination when compared with historical ground water data. The purging of wells before sample collection is required. The ADEC requests resumption of ground water sampling in 2010 according to the ADEC-approved sampling plan.
The analysis of ground water collected before purging MW-1 had DRO concentration of 3.19 mg/L. The analysis of ground water collected after purging MW-1 had a DRO concentration of 4.81 mg/L; a marked increase in concentration after purging the well. The analysis of ground water collected before purging MW-2 had a DRO concentration of 1.03 mg/L. The analysis of ground water collected after purging MW-2 had a DRO concentrate of 1.08 mg/L; concentration of DRO in the field duplicate of the MW-2 purged sample was 1.37 mg/L. |
Bruce Wanstall |
| 5/5/2011 |
Update or Other Action |
DEC sent a letter to AP&T requesting they submit an updated work plan to resume annual monitor well sampling. The last sampling event for the facility Source Area 77867 was in 2008. DEC received the Report in January 2010. In the Report Approval Letter DEC requested data from 2009 and a continuation of annual sampling in 2010. |
Bruce Wanstall |
| 7/21/2011 |
Update or Other Action |
DEC evaluated correspondence and monitoring reports for the Haines Light & Power Inc site Source Area 77867 and contacted the manager Danny Gonce by telephone to request that AP&T submit a revised long term monitoring work plan for the site and that annual sampling resume in 2011. |
Bruce Wanstall |
| 12/8/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77867 USTs. |
Bruce Wanstall |
| 12/12/2011 |
Document, Report, or Work plan Review - other |
DEC approves the 2009 Groundwater Monitoring Report by Nortech for the HL&P regulated UST source area contaminated site. The Report documents well sampling at the site to monitor groundwater contaminated by subsurface soil contamination associated with a regulated underground storage tank (UST) system. In accordance with 18 AAC 78.090 and 18 AAC 78.230, qualified person(s) used data collection methods consistent with DEC methodology in the DEC-approved Corrective Action Plan for long term monitoring of groundwater. The data meet field and laboratory report quality assurance criteria in Contaminated Sites Program guidance documents and the UST Procedures Manual. |
Bruce Wanstall |
| 12/16/2011 |
Document, Report, or Work plan Review - other |
DEC approves the 2011 Groundwater Monitoring Report by Nortech for the HL&P regulated UST source area contaminated site. The Report documents well sampling at the site to monitor groundwater contaminated by subsurface soil contamination associated with a regulated underground storage tank (UST) system. In accordance with 18 AAC 78.090 and 18 AAC 78.230, qualified person(s) used data collection methods consistent with DEC methodology in the DEC-approved Corrective Action Plan for long term monitoring of groundwater. The data meet field and laboratory report quality assurance criteria in Contaminated Sites Program guidance documents and the UST Procedures Manual. |
Bruce Wanstall |
| 9/28/2012 |
Document, Report, or Work plan Review - other |
DEC letter approves a revised corrective action plan involving long term monitoring of soil and groundwater contamination associated with an overfill event from a regulated underground storage tank and a spill from a polychlorinated biphenyl compound transformer source. AP&T and NORTECH will continue management of the risks associated with the complete exposure pathways to the remaining contamination that AP&T is managing through a combination of source control, cleanup, and engineering controls. |
Bruce Wanstall |
| 12/21/2012 |
Document, Report, or Work plan Review - other |
DEC letter to Alaska Power and Telephone (AP&T) provided approval and comment with requests regarding the Nortech letter/report titled AP&T, Haines, 2012 Site Assessment and Sampling Results (Report) documenting recent site activity in 2012 at the AP&T facility. The Report documents monitoring of the in-situ cleanup remedies and maintenance of control measures for petroleum releases from a regulated underground storage tank system and from a polychlorinated biphenyl compound (PCB) source area as required by 18 ACC 75.345(H) and 18 AAC 78.240 – 18 AAC 78.276. The DEC letter provides approval for the site activities and laboratory data and provides comments and requests associated with the recommendations made by Nortech in the Report. Nortech observed that monitor well MW-2 is a culvert stand-pipe with a surface mount that allows surface water to flow into the well. The pipe may have been useful for collecting free product floating on groundwater in 1996 but the water samples from this well are not representative of groundwater. The DEC letter requests that the stand-pipe be filled with clean sand and sealed at the surface as soon as weather allows. DEC agrees with Nortech that MW-2 should be replaced and requests that a second new well also be installed at a new location on-site down-gradient of the two source areas. |
Bruce Wanstall |
| 9/16/2013 |
Update or Other Action |
DEC requested AP&T provide an update on the 2013 site work plan. |
Bruce Wanstall |
| 10/30/2013 |
Document, Report, or Work plan Review - other |
DEC has reviewed the work plan Long Term Monitoring for Haines Light and Power by Nortech and waives a previous request for AP&T to install an additional well west of the bioventing system (former UST site). A properly repaired well MW-2 and well MW-1 are adequate to monitor groundwater contamination migrating from the former UST site and the residual PCB soil contamination. DEC review of this specific work plan is to ensure that the work is done in accordance with State of Alaska environmental conservation laws and regulations. Therefore the draft Plan is approved in accordance with 18 AAC 75.335(b) and 18 AAC 78.260.
|
Bruce Wanstall |
| 5/2/2014 |
Institutional Control Periodic Reporting |
AP&T notified DEC of plans to install a new transformer east of the power plant building. The project requires removal of the asphalt cap to build a containment bay that drains to the oil-water separator system. DEC approved the plan in replay by electronic mail. |
Bruce Wanstall |
| 1/15/2015 |
Update or Other Action |
DEC received 2014 Site Assessment and Sampling Results Report by Nortech Environmental Inc. with laboratory data on annual groundwater monitoring in accordance with the Site Corrective Action Plan |
Bruce Wanstall |
| 11/17/2015 |
Document, Report, or Work plan Review - other |
DEC reviewed 2014 Site Assessment and Sampling Results Alaska Power and Telephone 241 Dalton Street, Haines, Alaska 99927 ADEC File Number: 1508.38.004 (Report). The Report was completed by Nortech documenting well sampling to demonstrate effectiveness of the in-situ cleanup remedies and maintenance of control measures for petroleum releases from a regulated underground storage tank (UST) system and from a PCB transformer source area. As a result of three successive sampling events with PCB levels below instrument detection and the site cleanup level of 0.5ug/L, DEC requested AP&T submit a plan to decommission monitoring well MW-3 in accordance with the DEC Monitoring Well Guidance dated November 2011. DEC requested a report on well sampling in 2013. |
Bruce Wanstall |
| 9/16/2016 |
Document, Report, or Work plan Review - other |
DEC reviewed Site Assessment and Sampling Results, an annual 2015 well sampling report submitted by Nortech Environmental Inc. Approval with requests was sent by letter sent electronically to AP&T today. DEC requested that AP&T decommission well MW-3 in accordance with the 2013 DEC Well Guidance, discontinue collecting samples from MW-1 for PCB analysis, submit inspection photos of the asphalt cap over PCB soil on-site, submit a report on operation of the air sparge unit to the UST excavation, and continue to sample MW-2 for PCBs and DRO and MW-1 for DRO. |
Bruce Wanstall |
| 11/22/2016 |
Document, Report, or Work plan Review - other |
ADEC has reviewed and approved the 2016 Alaska Power and Telephone Annual Sampling, dated November 2016. Nortech Environmental completed the report of annual sampling of groundwater wells monitoring petroleum and polychlorinated biphenyl (PCB) soil contamination. The Report documents the condition of the air sparging system, condition of the asphalt cap, and annual sampling of wells MW-1 and MW-2. DRO above cleanup levels was detected in samples from both wells; PCBs were below the laboratory reporting limit and cleanup level in well MW-2 for the second year. |
Bruce Wanstall |
| 12/15/2017 |
Site Characterization Report Approved |
ADEC reviewed "2017 Alaska Power and Telephone Annual Sampling" report, dated December 6, 2017. ADEC agrees with NORTECH's recommendation to only sample wells MW1 & MW2 for DRO annually. PCB concentration in MW2 have been non-detect for three consecutive events and future sampling/analysis for PCB's is not required. |
Amy Rodman |
| 1/15/2019 |
Site Characterization Report Approved |
ADEC Contaminated Sites Program reviewed and approved the “2018 Alaska Power and Telephone Annual Sampling” (report) dated December 14, 2018 for the Haines Light & Power Company by NORTECH, Inc. (Nortech). The described field effort was conducted on October 16, 2018 and generally consisted of well survey data collection, a visual inspection of two monitoring wells, and groundwater sampling for laboratory analysis of diesel range organics (DRO) and polychlorinated biphenyls (PCB). ADEC concurs with NORTECH’s following recommendations:
•DRO concentrations within MW-1 are above ADEC Table C groundwater cleanup levels. Please continue annual groundwater sampling for DRO from MW-1.
•DRO concentrations within MW-2 meet ADEC’s Table C groundwater cleanup levels.
•ADEC approves discontinuing sampling for PCB and DRO in MW-2.
Additional GW MWs are needed to bound GW contamination plume. MW-1 needs to have VOC's, PAH's analyzed. WP due March 1, 2019. |
Amy Rodman |
| 12/5/2019 |
Site Characterization Report Approved |
ADEC Contaminated Sites Program reviewed and approved the “2019 Alaska Power and Telephone Annual Sampling” (report) dated December 4, 2019 for the Haines Light & Power Company by NORTECH, Inc. (NORTECH). The described field effort was conducted on November 12, 2019 and generally consisted of well survey and a visual inspection of monitoring well MW-1, and groundwater sampling for laboratory analysis of diesel range organics (DRO). Two consecutive samplings for DRO at below Table C groundwater cleanup levels are needed for the site closure evaluation. |
Amy Rodman |
| 7/21/2021 |
Update or Other Action |
J. Fix assigned as new Project Manager. |
Julie Fix |
| 10/15/2021 |
Document, Report, or Work plan Review - other |
2021 "Annual Groundwater Monitoring Report" received on this date. Comment table and letter sent on 11/12/2021. Additional comments sent to RP on 1/27/2022. A revised report was received on 3/22/2022. |
Julie Fix |
| 10/15/2021 |
Document, Report, or Work plan Review - other |
2021 "Annual Groundwater Monitoring Report" received on this date. Comment table and letter sent on 11/12/2021. Additional comments sent to RP on 1/27/2022. A revised report was received on 3/22/2022. |
Julie Fix |
| 2/4/2022 |
Meeting or Teleconference Held |
Teleconference with RP and consultant to discuss report comments. Meeting summary saved in the site file. |
Julie Fix |
| 5/3/2022 |
Site Characterization Report Approved |
The revised 2021 "Annual Groundwater Sampling" Report was approved on this date. A groundwater sample was collected from MW-1 on September 22, 2021 and analyzed for DRO. DRO was detected at 7.17 mg/L. Annual groundwater monitoring at MW-1 should continue. |
Julie Fix |
| 8/3/2023 |
Site Characterization Report Approved |
The “2022 Alaska Power and Telephone Annual Groundwater Sampling” report, dated June 14, 2023, was received via email on June 15, 2023. MW-1 was sampled for DRO. DRO remains above cleanup levels. The report was approved on this date.
|
Julie Fix |
| 1/30/2024 |
Site Characterization Report Approved |
The ADEC reviewed and approved the “2023 Alaska Power and Telephone Annual Groundwater Sampling” report, dated January 18, 2024. DRO detected above CULs in MW-1 at concentrations 1.87 mg/L and 2.26 mg/L (duplicate). Annual groundwater monitoring at this site should continue. |
Stacee Henderson |
