| Action Date |
Action |
Description |
DEC Staff |
| 6/15/2012 |
Update or Other Action |
Elementary: UST Removal Report submitted this date. DRO was found at concentrations up to 17,000 mg/kg during the removal of the UST in October 2011. At the time of the tank removal, when contamination was found to be present, Borough staff notified DEC via phone. (Action transferred from Hazard ID 4219.) |
Anne Marie Palmieri |
| 6/19/2012 |
Meeting or Teleconference Held |
CS staff met with Borough staff and their consultant, Chilkat Environmental, for a scoping meeting regarding the former primary and elementary tanks. A work plan is expected to be submitted in the next week or so. (Action transferred from Hazard ID 4219.) |
Anne Marie Palmieri |
| 7/6/2012 |
Site Characterization Workplan Approved |
Characterization work plan approved this date for the former elementary and primary school USTs. Fieldwork will be conducted in mid-August. (Action transferred from Hazard ID 4219.) |
Anne Marie Palmieri |
| 4/29/2013 |
Site Visit |
DEC met with Haines Borough officials and Chilkat Environmental at the 4th & Main site in Haines to evaluate a draft work plan to perform a contaminated soil removal action cleanup remedy at the former Elementary School UST site and monitor well installation at the former Primary School UST site for an MNA cleanup remedy. (Action transferred from Hazard ID 4219.) |
Bruce Wanstall |
| 7/3/2013 |
Document, Report, or Work plan Review - other |
As a result of the collaborative approach Chilkat Environmental employed with DEC in drafting the site investigation, interim removal and well installation Plan for the HBSD USTs site, DEC finds the Plan acceptable without comment. The Plan objective, design, sampling methodology, and reporting schedule are in agreement with Title 18 Alaska Administrative Code 75.325 and 75.355 and DEC guidance documents therefore in accordance with 18 AAC 75.320 the Plan is hereby approved. (Action transferred from Hazard ID 4219.) |
Bruce Wanstall |
| 8/7/2013 |
Site Visit |
DEC accompanied Borough Officials and Chilkat Environmental to the Elementary School property of observe the excavation at the former UST site to recover remaining subsurface contaminated soil from the former UST site. An estimated 20 cubic yard volume of soil that was confirmed contaminated with petroleum by observation and field screen sample tests was transported to Borough property at the Water Treatment Plant where it is stockpiled between liners. DEC confirmed by observation and field screen sampling results that a deminimis volume of contaminated soil could not be recovered due to groundwater filling in the excavation. Additional test pits confirmed clean material surrounding the primary excavation site to groundwater depth of ten feet below ground surface. (Action transferred from Hazard ID 4219.) |
Bruce Wanstall |
| 9/12/2013 |
Document, Report, or Work plan Review - other |
DEC letter formally approves the 2012 Former Haines School Contaminated Soil Characterization Report by Chilkat Environmental for the Haines Borough School UST sites. The Report describes two cleanup remedies for residual petroleum contamination in subsurface soil at the two former UST release sites. The first is additional excavation of contaminated soil and the second is monitored natural attenuation. The Report adequately describes the inherent upsides and downsides for each option. In approval of the work plan for 2013 site activity at the Elementary School, the DEC concluded that the degree of uncertainty with the extent of subsurface soil contamination at the Elementary School site required excavation for additional investigation and removal for off site remediation. DEC observed during the excavation in July, 2013 that the extent of contamination did reach a depth greater than was anticipated but the CEI estimate of lateral extent in the 2012 Report was accurate. The selected cleanup remedy for the Primary School site is unresolved and will be determined by selection of future land use for the site by the Haines Borough in 2013. (Action transferred from Hazard ID 4219.) |
Bruce Wanstall |
| 9/19/2013 |
Document, Report, or Work plan Review - other |
DEC reviewed the Haines Borough Former Elementary School UST Remedial Action Report (Report) completed by Chilkoot Environmental Inc (CEI) for the Haines Borough. The Report documents the cleanup of petroleum contaminated soil at the former Elementary School UST implemented according to the approved work plan with DEC in attendance. Based on information in the Report, CEI recommends site closure with no institutional controls. The Removal Action was successful at extracting contaminated soil to the practicable extent and remaining contamination is limited to an under 2 inch de minimis lens positioned at the groundwater interface 8 feet below ground surface. In the Approval Letter DEC concurs with the conclusions made in the Report. The recommendation for site closure with no institutional controls at the Elementary School property will be given full consideration. However, a stockpile of contaminated soil remains on Borough Property and without a remediation plan. DEC requests the Haines Borough submit a plan within ten days of receipt of the letter. (Action transferred from Hazard ID 4219.) |
Bruce Wanstall |
| 3/6/2014 |
Update or Other Action |
Site Name of Hazard ID 4219 changed from Haines Borough School District USTs to Haines Borough High School. Original site record encompassed four school sites and have now been split into four separate Hazard IDs: 4219 (Haines Borough High School), 26214 (Haines Borough Primary School), 26215 (Haines Borough Elementary School), and 26216 (Haines Borough Vocational Technical School). Problem statement updated and historical actions moved and/or copied accordingly. |
Mitzi Read |
| 3/6/2014 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 3/7/2014 |
Potentially Responsible Party/State Interest Letter |
DEC letter was sent today by electronic and regular mail to the Director of Public Facilities for the Haines Borough regarding normal Notice of Potential Responsible Party information and notice of an administrative reorganization of school UST sites on the CS database to facilitate pending site closure agreements. |
Bruce Wanstall |
| 3/12/2014 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79613 name: 1,000-Gallon Heating Oil UST |
Bruce Wanstall |
| 3/17/2014 |
Cleanup Complete Determination Issued |
In accordance with 18 AAC 75.335 (b)(2), the concentration and extent of contamination has been determined to the maximum extent practicable at the site referenced in this decision document. The volume of remaining soil contamination at the former Elementary School UST site (Lot 8) is to de minimis extent and presents no unacceptable risk to human health or the environment. Under this closure the site is subject to the following standard conditions: Any proposal to transport soil or groundwater off-site requires DEC approval in accordance with 18 AAC 75.325(i) and movement or use of contaminated material in a manner that results in a violation of 18AAC 70 water quality standards is prohibited. This determination is in accordance with 18 AAC 75.380 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 |
| 3/17/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 79613 1,000-Gallon Heating Oil UST. |
Bruce Wanstall |
| 3/24/2014 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PERP staff Sarah Moore. Spill no. 11119929401; spill date = 10/21/11; substance = diesel; quantity = unknown; source 1,000-gallon underground storage tank. (Transfer documented for data quality. Spill was managed under CS program.) |
Mitzi Read |
| 4/4/2014 |
Update or Other Action |
Lat/long coordinates updated by the project manager using personal knowledge of the site features on DCCED DCRA aerial imagery and ArcGIS software. |
Bruce Wanstall |
