| Action Date |
Action |
Description |
DEC Staff |
| 11/27/2013 |
Potentially Responsible Party/State Interest Letter |
Potentially responsible party / State interest letter sent to landowner by PERP staff Bob Mattson. |
Mitzi Read |
| 1/5/2015 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PERP staff Bob Mattson. Spill no. 13119933001; spill date = 11/26/13; substance = diesel; quantity = ~200-300 gallons; source = 550-gallon heating oil above ground storage tank. |
Mitzi Read |
| 1/13/2015 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 1/14/2015 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79725 name: 550-Gallon Heating Oil AST |
Mitzi Read |
| 2/5/2015 |
Update or Other Action |
Introduced myself to RP and discussed decreasing groundwater contamination and future quarterly sampling. |
Danielle Duncan |
| 7/13/2015 |
Update or Other Action |
Spoke to RP and they have had the groundwater sampled by Nortech. Some of the water had to be disposed of as hazardous waste - likely that the groundwater contamination has not decreased significantly. I discussed the possibility of adding fertilizer to speed up remediation. Will wait for Nortech report. |
Danielle Duncan |
| 8/7/2015 |
Site Characterization Report Approved |
Approved Nortech's groundwater monitoring report titled "RE: 2921 Glacierwood Court, Juneau, Alaska Heating Oil Release". The results indicate that there is substantial groundwater contamination on site on the order of 1,420 mg/L DRO. Groundwater monitoring will continue and RegenOx has been approved to aid remediation. Also sampling events may occur biannually if the RP desires rather than quarterly. |
Danielle Duncan |
| 8/7/2015 |
Document, Report, or Work plan Review - other |
Rec'd Nortech's report titled "RE: 2921 Glacierwood Court, Juneau, Alaska Heating Oil Release." |
Danielle Duncan |
| 8/7/2015 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 79725 550-Gallon Heating Oil AST. |
Danielle Duncan |
| 10/1/2015 |
Site Characterization Report Approved |
Rec'd the letter report titled: RE: 2921 Glacierwood Court, Juneau, Alaska Monitoring Well Activities, dated October 1st 2015, and received by our office on the September 28th 2015 by electronic mail. Nortech collected product from monitoring well TSP-2 on four occasions during September of 2015 and found between 0 and 1.0 inch of free product each time. The ADEC concurs with Nortech and would like to continue weekly groundwater monitoring/product removal from well TSP-2. The use of sorbents to aid in product recovery is beneficial and approved. Although the ADEC previously stated in a letter dated August 7th 2015 that groundwater sampling of the other two wells (TSP-1 and TSP-3) could be done biannually, the ADEC now requires that these wells and TSP-3 be sampled quarterly and tested for diesel range organics (DRO) due to the repeated presence of product in TSP-2 and the extensive groundwater contamination present (on the order of 1,420 mg/L DRO). Once a year, these samples will also be tested for benzene, toluene, ethylbenzene, and xylene (BTEX). |
Danielle Duncan |
| 11/4/2015 |
Document, Report, or Work plan Review - other |
Rec'd quarterly report October 2015, this date. |
Danielle Duncan |
| 11/20/2015 |
Site Characterization Report Approved |
Sent approval letter re: Nortech's RE: 2921 Glacierwood Court, Juneau, Alaska Monitoring Well Activities, dated November 4th 2015. The report documents that during the month of October, Nortech visited the site on five occasions. During these visits, Nortech replaced sorbent pads that are effectively removing free product from monitoring wells. DRO is still present in TSP-2 and TSP-3 at concentrations exceeding ADEC cleanup levels. TSP-3 had a concentration of 5.1 mg/L and TSP-2 had a concentration of 120 mg/L. The high result for TSP-2 is likely the result of the presence of product in the sample and indicates that the groundwater contamination has or is moving downgradient from the original spill footprint. Quarterly groundwater monitoring and free product removal will continue until data indicates that the contamination has decreased to below ADEC cleanup levels. |
Danielle Duncan |
| 12/1/2015 |
Document, Report, or Work plan Review - other |
Rec'd RE: 2921 Glacierwood Court, Juneau, Alaska, Monitoring Well Activities this date. |
Danielle Duncan |
| 1/5/2016 |
Document, Report, or Work plan Review - other |
Product continues to be recovered from TSP 2 and TSP 3 (monitoring wells). Weekly sorbent changes will continue in addition to monthly groundwater monitoring. I suggested that an excavation take place to enhance and speed up cleanup. |
Danielle Duncan |
| 1/6/2016 |
Update or Other Action |
The initial (past) excavation at the site was conducted to the extent of the house foundation and was limited by trees/roots. |
Danielle Duncan |
| 1/8/2016 |
Document, Report, or Work plan Review - other |
Rec'd RE: 2921 Glacierwood Court, Juneau, Alaska, Monitoring Well Activities this date. |
Danielle Duncan |
| 2/5/2016 |
Document, Report, or Work plan Review - other |
Rec'd 14-1043 Product Removal January16...this date submitted by Nortech. |
Danielle Duncan |
| 2/8/2016 |
Document, Report, or Work plan Review - other |
Sent approval letter for the last 2 groundwater product removal letter reports. Weekly field activities to remove free product from groundwater monitoring wells TSP-2 and TSP-3 are on-going. Due to the large amount of product being retrieved from TSP-2, Nortech has increased the frequency of site visits to pump the product from TSP-2 and replace sorbent pads in TSP-3. |
Danielle Duncan |
| 3/8/2016 |
Update or Other Action |
Spoke to RP today - they plan on having the trees cut down to access contaminated soil in the yard and will coordinate with Nortech on the excavation. |
Danielle Duncan |
| 4/5/2016 |
Site Visit |
Visited the site today with Nortech and observed the locations of the monitoring wells in addition to the excavation site and trees. Currently working on a plan to better understand the groundwater flow on the property. |
Danielle Duncan |
| 5/16/2016 |
Update or Other Action |
Sent a letter today requesting that a groundwater flow investigation be completed. |
Danielle Duncan |
| 7/7/2016 |
Update or Other Action |
Spoke to the homeowner and they will request a groundwater flow direction study. Also, product is still being removed using sorbents from the monitoring well closest to the street. |
Danielle Duncan |
| 9/20/2016 |
Update or Other Action |
Rec'd an email from the RP stating that Nortech is writing up a report on groundwater flow at the site. |
Danielle Duncan |
| 11/10/2016 |
Update or Other Action |
Removal of petroleum product from the groundwater has been occurring on site for over a year using both passive and active methods including physically pumping petroleum out of the wells and placing petroleum sorbents inside the wells. The latest report from Nortech indicates that there is still petroleum product in 2/3 groundwater monitoring wells and at this time, the ADEC recommended that a more active product removal occur such as the use of a light non-aqueous phase liquid (LNAPL) skimmer or similar active removal method in addition to delineation of the groundwater contamination plume. |
Danielle Duncan |
| 3/6/2017 |
Update or Other Action |
Approved the letter report received 2/20/17 - Removal of petroleum product from the groundwater is continuing in addition to monitoring/sampling. Results from this report indicate that while diesel range organics (DRO) concentrations are fluctuating, a general decrease may be occurring. The ADEC concurs with Nortech’s recommendation that product removal and monitoring continue and that there is no need to continue sampling monitoring well TSP-1 because DRO concentrations have been below ADEC Method 2 cleanup levels since June of 2014 when it was first sampled. |
Danielle Duncan |
| 5/2/2017 |
Site Characterization Report Approved |
Approved the report consisting of a laboratory report of samples from groundwater monitoring wells TSP-2 and TSP-3 from SGS Laboratories. TSP-2 had free product and the other monitoring well samples had diesel range organics (DRO) at concentrations above the ADEC cleanup level of 1.5 milligrams per liter (mg/L). These concentrations ranged from 2.4 - 288 mg/L DRO. |
Danielle Duncan |
| 11/1/2017 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 79725 550-Gallon Heating Oil AST. |
Danielle Duncan |
| 11/2/2017 |
Update or Other Action |
Reviewed and approved the Quarterly Sampling Report received on October 30, 2017. During the current sampling event, TSP-2 again had free product but TSP-3 did not. TSP-3 had a DRO concentration (1.2 mg/L) approaching the cleanup of 1.5 mg/L and TSP-2 had a concentration of 480 mg/L. The ADEC approves of the installation of a skimmer in TSP-2 this spring to facilitate remediation. The ADEC concurs with Nortech that sampling should only occur for the wells that do not have free product in them. Please continue product recovery in TSP-3 when and if necessary. Note that delineation of the groundwater contamination plume remains a data gap for the site. Please submit a work plan to delineate the groundwater contamination plume by January 30, 2018.
|
Danielle Duncan |
| 1/25/2018 |
Document, Report, or Work plan Review - other |
Approved the 4th quarter groundwater monitoring report. There are 3 groundwater monitoring wells on site (TSP-1, TSP-2, TSP-3). TSP-1 is in the front yard, TSP-2 is near the property line and Riverside Drive, and TSP-3 is near the aboveground storage tank where the spill occurred. TSP-1 was not sampled because prior data indicated that the well was free of petroleum contamination exceeding ADEC cleanup levels. During the sampling, petroleum product was observed in TSP-2 and TSP-3. An active petroleum skimmer will be placed in TSP-2 once weather conditions permit. Only TSP-3 was sampled and analyzed for benzene, toluene, ethylbenzene, and xylenes (BTEX) and DRO. The results were above ADEC cleanup levels (6.7 mg/L DRO). |
Danielle Duncan |
| 2/7/2018 |
Meeting or Teleconference Held |
Meeting today with Nortech to discuss next steps. ADEC will have a work plan by 3/16/18 to install a skimmer, do a prelim vapor intrusion investigation, and delineate the extent of the contaminated groundwater plume. |
Danielle Duncan |
| 4/2/2018 |
Document, Report, or Work plan Review - other |
Approved the Plume Delineation Work Plan this date. Approved actions:
1. Install a skimmer in groundwater monitoring well TSP-2 to recover free petroleum product.
2. Complete Appendix H of the ADEC Vapor Intrusion Guidance for Contaminated Sites dated November 2017 to the extent practicable, but including photoionization detector (PID) measurements in the crawlspace.
3. Documentation that the groundwater well ID # 5910 is not in use.
4. Further delineation of the petroleum contamination groundwater plume in the direction of 2931 Glacierwood Court and Riverside Drive by installing groundwater monitoring wells. Five wells are proposed for Riverside Drive and although not expressly stated, the assumption is that one groundwater monitoring well will be placed at 2931 Glacierwood Drive. |
Danielle Duncan |
| 4/10/2018 |
Update or Other Action |
NORTECH arranged for utility locates along the CBJ right of way between Riverside
Drive and 2931 Glacierwood Court and between Riverbend Elementary School and Riverside Drive in
order to determine if installation of the ADEC requested off Site groundwater monitoring wells could occur. Utility locates indicated the area between Riverside Drive and the bike path adjacent to Riverbend Elementary School property was suitable for installation of the three planned groundwater monitoring wells. However, the presence of an 18 inch high pressure water main located under the sidewalk between Riverside Drive and Glacierwood Court properties means that installation of monitoring wells will not occur along the property line of 2931 Glacierwood Court and Riverside Drive. NORTECH has not received approval from either the Millers (responsible party) or the neighbors at 2931 Glacierwood Court to proceed with ADEC requested work. If approval is given for any or part of the ADEC requested work, NORTECH will seek a permit to conduct work within the CBJ right of way between Riverside Drive and the bike path adjacent to Riverbend Elementary School property. |
Danielle Duncan |
| 5/8/2018 |
Update or Other Action |
Site/right-of-way access has been granted and additional groundwater monitoring wells will be installed. |
Danielle Duncan |
| 7/3/2018 |
Site Characterization Report Approved |
Approved the Nortech RE: 2921 Glacierwood Court, Juneau, Alaska, Monitoring Well Activities report this date. Further delineation of the petroleum contamination groundwater plume in the direction of Riverside Drive by installing three additional groundwater monitoring wells using direct-push drilling. Monitoring wells (MW) -4, 5, and 6 were installed opposite Riverside Drive within the right-of-way. All six of the monitoring wells were sampled and analyzed for gasoline range organics (GRO), diesel range organics (DRO), and volatile organic compounds (VOCs). Polycyclic aromatic hydrocarbons (PAHs) were analyzed on TSP-2 only. Free product was observed in TSP-2.
|
Danielle Duncan |
| 9/26/2018 |
Site Characterization Report Approved |
Approved the 3rd Quarter Groundwater Monitoring and Sampling Report this date. The results found no detections of contaminants in MW4 and MW6. MW5 had 0.17 mg/L DRO and TSP3 had 1.1 mg/L DRO. Both of these values and the other analytes were below ADEC cleanup levels. The groundwater flow direction was determined to be towards the Mendenhall River as previously noted and the groundwater contamination observed on site has not migrated across Riverside Drive. TSP2 still contains free product. |
Danielle Duncan |
| 10/4/2018 |
Update or Other Action |
The boring at the adjacent property where there had been a groundwater drinking well in the past had no indications of contamination all the way to the groundwater interface. No groundwater sample was collected but field screening was done and a soil sample was collected from the groundwater interface. |
Danielle Duncan |
| 2/5/2019 |
Site Characterization Report Approved |
Approved the 2018 Annual Report 2921 Glacierwood Court, Juneau, Alaska, dated January 18, 2019. Site closure with institutional controls was requested and denied due to the lack of a decreasing trend for groundwater contamination and delineation in the south direction. Requested a work plan. |
Danielle Duncan |
| 3/11/2019 |
Site Characterization Report Approved |
Approved annual groundwater monitoring plan for TSP2 and TSP3 only. The wells will be analyzed for diesel range organics (DRO) and benzene, toluene, ethylbenzene, and xylenes (BTEX). If there is product in either well it won’t be sampled. |
Danielle Duncan |
| 5/14/2019 |
Update or Other Action |
The three groundwater monitoring wells in the right-of-way have been decommissioned. |
Danielle Duncan |
| 4/10/2020 |
Document, Report, or Work plan Review - other |
On April 10, 2020 ADEC received "SITE DISCUSSION REPORT 2921 GLACIERWOOD COURT JUNEAU, ALASKA" dated March 20, 2020. |
Rachael Petraeus |
| 2/11/2021 |
Document, Report, or Work plan Review - other |
On February 11, 2021 ADEC received "SAMPLING AND ANALYSIS PLAN 2921 GLACIERWOOD COURT JUNEAU, ALASKA" dated February 11, 2021. The work plan proposes work to continue product recovery, install additional wells, and collect groundwater samples for laboratory analysis. |
Rachael Petraeus |
| 10/28/2021 |
Site Characterization Workplan Approved |
On October 28, 2021 ADEC received and approved "SAMPLING AND ANALYSIS PLAN 2921 GLACIERWOOD COURT JUNEAU, ALASKA" dated October 26, 2021. The work plan proposes work to continue product recovery, install additional wells, and collect groundwater samples for laboratory analysis. |
Rachael Petraeus |
| 10/13/2022 |
Meeting or Teleconference Held |
Teleconference with consultant Nortech to discuss site updates. A report for work conducted in 2021 will be submitted shortly as the fall groundwater sampling has just been finalized. Would like to pursue closure with institutional controls. |
Flannery Ballard |
| 1/6/2023 |
Document, Report, or Work plan Review - other |
The ADEC received the "Well Installation and Monitoring Report" on December 19, 2022 and is providing comments which should be reviewed before the report is re-submitted for approval. |
Flannery Ballard |
| 2/23/2023 |
Document, Report, or Work plan Review - other |
The ADEC reviewed the response to comments and a revised version of the 2022 groundwater monitoring report. The ADEC does not concur that there is adequate evidence to claim that contamination does not extend across the property boundaries into Riverside Drive. The ADEC emailed a response to comments and is asking for a revised version of the report be summitted. |
Flannery Ballard |
| 3/15/2023 |
Site Characterization Report Approved |
The ADEC approved the revised "Well Installation and Sampling Report", dated February 28, 2023. The ADEC does not concur that there is adequate evidence to prove contamination does not extend into Riverside Drive. The ADEC does concur that quarterly monitoring of groundwater monitoring wells MW7-11 should be undertaken to develop trends over time. |
Flannery Ballard |
| 3/15/2023 |
Workplan Requested |
The ADEC requested a work plan for the proposed quarterly sampling of monitoring wells MW7-11. |
Flannery Ballard |
| 5/3/2023 |
Document, Report, or Work plan Review - other |
The DEC reviewed the "Quarterly Groundwater Monitoring Sampling and Analysis Plan", submitted April 12, 2023. The DEC is providing comments which should be addressed before the work plan is re-submitted for approval. |
Flannery Ballard |
| 5/11/2023 |
Site Characterization Workplan Approved |
The DEC approved the "Quarterly Groundwater Monitoring Sampling and Analysis Plan", submitted April 12, 2023. Response to comments were received on May 8, 2023 and approved. The work plan proposes to sample MWs 7,8,9,10, 11, and TSP-2 and 3, if they are absent of free product. Groundwater will be sampled quarterly between 2023 and 2024, with an annual report submitted every year. Groundwater samples will be sampled for GRO, DRO, RRO, VOCs, and PAHs. The DEC requested a field duplicate be collected as well, in line with the Field Sampling Guidance. |
Flannery Ballard |
| 4/25/2024 |
Site Characterization Report Approved |
Reviewed and approved the revised "2023 Groundwater Monitoring Sampling and Analysis Report," dated March 12, 2024. Field activities occurred in August and November 2023. TSP-2 was not sampled in 2023 due to free product (0.37 inches and 11.25 inches, respectively) observed in the well. During the November sampling event 0.10 inches of free product was recovered from MW9. Samples from MW10 exceeded CULs for naphthalene. Samples from MW11 exceeded CULs for DRO, ethylbenzene, and naphthalene. Samples from TSP-3 exceeded CULs for DRO in August, but November resulted in concentrations below DEC groundwater cleanup levels.
The DEC concurred that MW7 should be decommissioned due to damage and three consecutive sampling events resulting in non-detections for contaminants of concern. Additionally, MW8 could be decommissioned because groundwater samples resulted in no detections for four consecutive sampling events, and the well is upgradient from the source.
Bi-annual sampling should occur between May- August and again September-December 2024.
The extent of the plume has not been fully delineated to the south. |
Stacee Henderson |
