| Action Date |
Action |
Description |
DEC Staff |
| 2/15/2011 |
Document, Report, or Work plan Review - other |
ADEC received the draft MWRP-37 LNAPL Removal Work Plan. The plan calls for bi-monthly product recovery via bailing at MWRP-37. A datalogger will be installed in nearby well MWRP-38 to determine the tidal influence. Previous hydrocarbon characterization determined the fuel type to be aviation gasoline. Any eligible product will be beneficially reused by Delta Western. If product cannot be reused, it will be containerized in 55 gallon drums, stored in the thermal treatment area, and shipped offsite. ADEC sent comments on March 1, 2011. ADEC requested that in addition to bailing, a passive skimmer be installed in the well to trap product in between recovery events. ADEC also requested that product recovery and reporting occur on a weekly basis and by a qualified person. |
Meghan Dooley |
| 3/31/2011 |
Cleanup Plan Approved |
ADEC approved the Final MWRP-37 LNAPL Removal Work Plan. Removal will occur on a weekly basis and will be followed by weekly reporting to ADEC. Due to the difficulty of providing a qualifed person for product recovery on a weekly basis, ADEC granted a waiver for the requirement of the use of a qualifed person on site. Rather, a qualified person will train Delta Western staff to conduct product recovery. A standard operating procedure and checklist will be provided to staff and present during recovery events. A qualified person will review the data collected and draft the weekly reports for ADEC. |
Meghan Dooley |
| 5/13/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for April 27 was received. A total of 5.62 gallons were recovered via bailing. This is the initial recovery event for the weekly product recovery at this well. Delta Western personell were trained by an ADEC Qualified Person to conduct the weekly product removal. |
Meghan Dooley |
| 5/20/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for May 2 was received. A total of 0.13 gallons were recovered via the skimmer and 6.38 gallons were recovered via bailing. A total of 12.13 gallons have been recovered to date. |
Meghan Dooley |
| 5/23/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for May 9 was received. A total of 0.16 gallons were recovered via the skimmer and 0.88 gallons were recovered via bailing. A total of 13.17 gallons have been recovered to date. |
Meghan Dooley |
| 5/27/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for May 16 was received. A total of 0.141 gallons were recovered via the skimmer and 1.7355 gallons were recovered via bailing. A total of 15.04 gallons have been recovered to date. |
Meghan Dooley |
| 5/31/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for May 23 was received. A total of 0.13 gallons were recovered via the skimmer and 0.89 gallons were recovered via bailing. A total of 16.06 gallons have been recovered to date. |
Meghan Dooley |
| 6/13/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for June 6 was received. A total of 0.13 gallons were recovered via the skimmer and 1.91 gallons were recovered via bailing. A total of 19.04 gallons have been recovered to date. |
Meghan Dooley |
| 6/13/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for May 30 was received. A total of 0.148 gallons were recovered via the skimmer and 0.789 gallons were recovered via bailing. A total of 17 gallons have been recovered to date. |
Meghan Dooley |
| 6/20/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for June 13 was received. A total of 0.141 gallons were recovered via the skimmer and 0.693 gallons were recovered via bailing. A total of 19.87 gallons have been recovered to date. |
Meghan Dooley |
| 6/29/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for June 20 was received. A total of 0.18 gallons were recovered via the skimmer and 1.79 gallons were recovered via bailing. A total of 21.85 gallons have been recovered to date. |
Meghan Dooley |
| 7/13/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for June 27 was received. A total of 0.13 gallons were recovered via the skimmer and 3.72 gallons were recovered via bailing. A total of 25.7 gallons have been recovered to date. Becuase there is significant product being recovered by the bailer and the skimmer is consistently full at each event, ADEC requested the recovery frequency be increased to twice weekly. |
Meghan Dooley |
| 7/20/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for July 4 and 7 was received. A total of 0.273 gallons was removed via the skimmer and 2.12 gallons was removed via bailing for the two events. Total product recovered to date is 27.98 gallons. |
Meghan Dooley |
| 7/22/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal 60 Day Evaluation Report was received by ADEC. The report accounts for progress on the first 2 months of product recovery at MWRP-37. The report calls for increasing the frequency of product recovery to twice weekly. After the first two recovery events, the volume recovered fluctuated between 1 and 2 gallons but does not appear to be trending up or down from the average of 1.5 gallons. |
Meghan Dooley |
| 7/26/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for July 11 and 14 was received. A total of 0.36 gallons were removed via the skimmer and 0.57 gallons were removed via bailing for the two events. Total product recovered to date is 28.9 gallons. |
Meghan Dooley |
| 8/4/2011 |
Site Visit |
ADEC staff conducted a site visit to provide field oversight on MWRP-37 product recovery. It was observed that the skimmer did not appear to be set at the correct level to optimize product recovery. ADEC recommended that the skimmer be adjusted to account for the seasonally low water level. It was also recommended that the well be bailed every 10 minutes to allow recoverable product to filter back into the well. |
Meghan Dooley |
| 8/11/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for July 25 and 28 was received. A total of 0.046 gallons were removed via the skimmer and 0.11 gallons were removed via bailing for the two events. Total product recovered to date is 29.5 gallons. |
Meghan Dooley |
| 8/11/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for August 1 and 4 was received. A total of 0.135 gallons were removed via the skimmer and 2.166 gallons were removed via bailing for the two events. The skimmer will be lowered for the following event in order to better intersect the skimmer intake with LNAPL. Total product recovered to date is 31.8055 gallons. |
Meghan Dooley |
| 8/18/2011 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 8/22/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for August 8 and 11 was received. A total of 0.0 gallons was removed via the skimmer and 0.107 gallons was removed via bailing for the two events. Delta Western crew lowered the skimmer by 4" in an attempt to intersect the LNAPL with the skimmer intake. Total product recovered to date is 31.9 gallons. |
Meghan Dooley |
| 9/6/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79147 name: MWRP-37 |
Meghan Dooley |
| 9/13/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for August 15 and 18 was received. A total of 0.0 gallons was removed via the skimmer and 4.09 gallons was removed via bailing for the two events. Total product recovered to date is 36 gallons. |
Meghan Dooley |
| 9/13/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for August 22 and 25 was received. A total of 0.14 gallons were removed via the skimmer and 0.185 gallons were removed via bailing for the two events. Total product recovered to date is 36 gallons. |
Meghan Dooley |
| 9/19/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for August 29 and September 1 was received. A total of 0.03 gallons was removed via the skimmer and 0.46 gallons were removed via bailing for the two events. Total product recovered to date is 36 gallons. |
Meghan Dooley |
| 9/19/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for September 5 and 8 was received. A total of 0.33 gallons were removed via the skimmer and 3.17 gallons was removed via bailing for the two events. Total product recovered to date is 40.17 gallons. |
Meghan Dooley |
| 9/30/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for September 12 and 15 was received. A total of 0.19 gallons were removed via the skimmer and 0.58 gallons was removed via bailing for the two events. Total product recovered to date is 40.94 gallons. |
Meghan Dooley |
| 10/12/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for September 19 and 22 was received. A total of 0.36 gallons were removed via the skimmer and 13.12 gallons was removed via bailing for the two events. Total product recovered to date is 54.44 gallons. |
Meghan Dooley |
| 10/17/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for September 26 and 29 was received. A total of 0.14 gallons were removed via the skimmer and 2.78 gallons was removed via bailing for the two events. Total product recovered to date is 57.36 gallons. |
Meghan Dooley |
| 10/17/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for October 3 and 6 was received. A total of 0.39 gallons were removed via the skimmer and 3.25 gallons was removed via bailing for the two events. Total product recovered to date is 61 gallons. |
Meghan Dooley |
| 11/1/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for October 10 and 13 was received. A total of 0.2 gallons were removed via the skimmer and 2.79 gallons was removed via bailing for the two events. Total product recovered to date is 63.99 gallons. |
Meghan Dooley |
| 11/15/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for October 18 and 20 was received. A total of 0.38 gallons were removed via the skimmer and 6.62 gallons was removed via bailing for the two events. Total product recovered to date is 70.99 gallons. |
Meghan Dooley |
| 11/15/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for October 24 and 27 was received. A total of 0.34 gallons were removed via the skimmer and 2.01 gallons was removed via bailing for the two events. Total product recovered to date is 73.34 gallons. |
Meghan Dooley |
| 11/21/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for October 31 was received. A total of 0.19 gallons were removed via the skimmer and 3.31 gallons were removed via bailing for the event. Total product recovered to date is 76.84 gallons. Only one recovery event was conducted due to high winds and adverse weather conditions on the scheduled November 3 recovery event. |
Meghan Dooley |
| 11/28/2011 |
Update or Other Action |
ADEC requested a work plan to install an active recovery system. Free product is consistently recovered twice a week and may be more effective with an active system. Additionally, ADEC requested the extent of contamination be delineated. |
Meghan Dooley |
| 12/1/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for November 7 was received. A total of 0.15 gallons were removed via the skimmer and 2.65 gallons were removed via bailing for the event. Total product recovered to date is 79.65 gallons. Only one event was completed due to the second low tide event ocurring outside regular Delta Western hours. |
Meghan Dooley |
| 12/7/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for November 14 and 17 was received. A total of 0.27 gallons were removed via the skimmer and 2.56 gallons were removed via bailing for the two events. Total product recovered to date is 82.48 gallons. |
Meghan Dooley |
| 12/7/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for November 21 and 24 was received. A total of 0.26 gallons were removed via the skimmer and 3.18 gallons was removed via bailing for the two events. Total product recovered to date is 85.92 gallons. |
Meghan Dooley |
| 12/14/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for December 8 was received. A total of 1 gallon was recovered via the skimmer and 1.67 gallons were recovered via bailing. A total of 90.32 gallons have been recovered to date. |
Meghan Dooley |
| 12/14/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for December 5 and December 8 was received. A total of 0.28 gallons was recovered via the skimmer and 2.67 gallons were recovered via bailing for the two events. A total of 90.32 gallons have been recovered to date. |
Meghan Dooley |
| 12/22/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for December 16 was received. A total of 0.31 gallons were recovered via the skimmer and 2.92 gallons were recovered via bailing. A total of 93.55 gallons have been recovered to date. |
Meghan Dooley |
| 12/28/2011 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for December 19 and December 22 was received. A total of 0.32 gallons were recovered via the skimmer and 3.64 gallons were recovered via bailing for the two events. A total of 97.5 gallons have been recovered to date. |
Meghan Dooley |
| 1/6/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for December 26 and December 29 was received. A total of 0.29 gallons were recovered via the skimmer and 2.82 gallons were recovered via bailing. A total of 100.61 gallons have been recovered to date. |
Meghan Dooley |
| 1/16/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for January 2 and January 5 was received. A total of 0.28 gallons were recovered via the skimmer and 1.55 gallons were recovered via bailing. A total of 103.85 gallons have been recovered to date. |
Meghan Dooley |
| 1/24/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for January 10 and January 12 was received. A total of 0.29 gallons were recovered via the skimmer and 1.4 gallons were recovered via bailing. A total of 105.54 gallons have been recovered to date. |
Meghan Dooley |
| 1/31/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for January 24 and January 26 was received. A total of 0.25 gallons were recovered via the skimmer and 0.52 gallons were recovered via bailing. A total of 106.31 gallons have been recovered to date. |
Meghan Dooley |
| 2/17/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for January 30 was received. A total of 0.17 gallons were recovered via the skimmer and 0.08 gallons were recovered via bailing for the event. A total of 106.51 gallons have been recovered to date. The second recovery event that week was not performed due to adverse weather conditions. |
Meghan Dooley |
| 2/17/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for February 6 and February 9 was received. A total of 0.33 gallons were recovered via the skimmer and 0.16 gallons were recovered via bailing for the two events. A total of 107 gallons have been recovered to date. |
Meghan Dooley |
| 2/27/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for February 13 and February 16 was received. A total of 0.33 gallons were recovered via the skimmer and 0.91 gallons were recovered via bailing. A total of 108.45 gallons have been recovered to date. |
Meghan Dooley |
| 2/27/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for February 20 and February 23 was received. A total of 0.35 gallons were recovered via the skimmer and 4.92 gallons were recovered via bailing for the two events. A total of 113.71 gallons have been recovered to date. |
Meghan Dooley |
| 3/9/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for March 5 and March 8 was received. A total of 0.16 gallons were recovered via the skimmer and 3.33 gallons were recovered via bailing for the two events. A total of 118.61 gallons have been recovered to date. |
Meghan Dooley |
| 3/16/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for March 13 and March 15 was received. A total of 0.26 gallons were recovered via the skimmer and 2.77 gallons were recovered via bailing for the two events. A total of 121.64 gallons have been recovered to date. |
Meghan Dooley |
| 3/26/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for March 19 and March 22 was received. A total of 0.3 gallons were recovered via the skimmer and 5.97 gallons were recovered via bailing for the two events. A total of 127.9 gallons have been recovered to date. |
Meghan Dooley |
| 4/6/2012 |
Document, Report, or Work plan Review - other |
ADEC sent comments on the Operations and Maintenance Plan for the Active Skimmer at MWRP-37. Minor comments were sent regarding who will be conducting the monitoring as well as monitoring frequency and reporting. |
Meghan Dooley |
| 4/16/2012 |
Meeting or Teleconference Held |
ADEC and ADOL staff met with the Responsible Parties to discuss the path forward for clean up at MWRP-37, Tank Hill, and the Thermal Treatment Area. An active skimmer will be installed at MWRP-37 in May and Chevron and Delta Western will look into potential locations in and around MWRP-37 for additional wells or soil borings. |
Meghan Dooley |
| 5/14/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for April 16 and April 19 was received. A total of 0.24 gallons were recovered via the skimmer and 3.62 gallons were recovered via bailing for the two events. A total of 139.23 gallons have been recovered to date. |
Meghan Dooley |
| 5/14/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for April 23 and April 26 was received. A total of 0.27 gallons were recovered via the skimmer and 4.22 gallons were recovered via bailing for the two events. A total of 143.72 gallons have been recovered to date. |
Meghan Dooley |
| 5/14/2012 |
Document, Report, or Work plan Review - other |
The LNAPL Removal Report for April 30 and May 4 was received. A total of 0.32 gallons were recovered via the skimmer and 5.17 gallons were recovered via bailing for the two events. A total of 148.89 gallons have been recovered to date. |
Meghan Dooley |
| 8/6/2013 |
Document, Report, or Work plan Review - other |
The MWRP-37 Skimmer product recovery report for the March 30 - July 25 period was received. Approximately 16.5 gallons of product was recovered during this time. The product skimmer appears to be functioning as designed. |
Meghan Dooley |
| 1/24/2014 |
Document, Report, or Work plan Review - other |
Received draft Work Plan for Installation of Recovery and Monitoring Wells, Lower Tank Farm Area on December 19, 2014; provided comments on 1/24. |
Meredith Savage |
| 4/4/2014 |
Document, Report, or Work plan Review - other |
Reviewed Report #9, MWRP-37 Skimmer Inspections Update-Dutch Harbor, Aalaska. Report was received on February 26, 2014, and covers the period of July 25, 2013 through February 11, 2014.
Approximately 20 gallons of LNAPL and 7 gallons of water was recovered during this time span. The pump runs three minutes a cycle for three cycles per day and is inspected weekly. Observations have shown that the average product recovery is about 5.4 ounces per cycle. Weekly inspection reports were included with this Inspections Update. |
Meredith Savage |
| 8/7/2014 |
Document, Report, or Work plan Review - other |
Received final Work Plan for Installation of Recovery and Monitoring Wells, Lower tank Farm Area, on July 24, 2014. The work plan addresses the installation of a recovery well next to monitoring well MWRP-37 and installation of two monitoring wells set cross-gradient to MWRP-37. The purpose of the recovery well is to allow for a more efficient recovery of light non-aqueous phase liquid (LNAPL) from groundwater and the additional monitoring wells will allow for further delineation of LNAPL in the area. Final approval given for the work plan on 8/7/2014.
|
Meredith Savage |
| 2/4/2016 |
Document, Report, or Work plan Review - other |
Delta Western submitted the draft Monitoring Well Installation Report for the installation of additional recovery wells in support of LNAPL recovery at MWRP-37. A total of three new wells (MWRP-40 through MWRP-42) were installed. Only a small amount of LNAPL was encountered in the new wells (less than 0.02 feet). ADEC provided report comments to Delta Western on 2/4/2016. |
Holly Weiss-Racine |
| 6/27/2016 |
Document, Report, or Work plan Review - other |
Approved the “Annual Area-Wide Groundwater Monitoring and Operations and Maintenance Report - 2014” for the RPMA. In 2016, Stantec will attempt to locate and repair damaged monitoring wells within the RPMA monitoring well network. If MWRP-18 is unrepairable, replacement of this monitoring well will be evaluated and results documented in subsequent groundwater monitoring reports. Measureable LNAPL was observed in MWRP-40 through 42. MWRP-40 exceeded cleanup levels for DRO, GRO and Benzene and MWRP-42 exceeded cleanup levels for DRO and GRO. |
Holly Weiss-Racine |
| 11/4/2016 |
Document, Report, or Work plan Review - other |
Approved the “Annual Area-Wide Groundwater Monitoring and Operations and Maintenance Report - 2015” for the RPMA. In 2016, Stantec will attempt to locate and repair damaged monitoring wells within the RPMA monitoring well network. |
Holly Weiss-Racine |
| 5/31/2017 |
Update or Other Action |
ADEC received the “Annual Area-Wide Groundwater Monitoring and Operations and Maintenance Report - 2016” for the RPMA by Stantec on behalf of Chevron and Delta Western. |
Linda (Qi) Liu |
| 11/3/2017 |
Update or Other Action |
ADEC received, commented and approved "Sampling and Analysis Plan for Groundwater Monitoring and Operations and Maintenance" for RPMA area. The plan was submitted by Stantec on behalf of Chevron and Delta Western. |
Linda (Qi) Liu |
| 10/17/2018 |
Document, Report, or Work plan Review - other |
ADEC received Monitoring Well MWRP-37 LNAPL Recovery Operation and Maintenance Summary March 2017 through May 2018. The weekly LNAPL recovery O&M inspections are ongoing. The LNAPL recovery system continues to effectively remove LNAPL from the subsurface in the area of monitoring well MWRP-37. No modifications to the operational setting of the LNAPL recovery system at monitoring well MWRP-37 currently are recommended. The recovery rate analysis shows that the average LNAPL recovery volume of 3.0 ounces per day between March 31 and December 11, 2017 has diminished from a high recovery period between November 25, 2013 and April 17, 2014, when an average LNAPL recovery volume of 17.0 ounces per day was observed. |
Rachael Petraeus |
| 8/23/2019 |
Document, Report, or Work plan Review - other |
On August 23, 2019 ADEC received the following " MONITORING WELL MWRP-37 LNAPL RECOVERY OPERATION AND MAINTENANCE SUMMARY – JUNE 2018 THROUGH JULY 2019 ROCKY POINT MANAGEMENT AREA
DUTCH HARBOR, UNALASKA, ALASKA". Weekly LNAPL recovery O&M inspections are ongoing. The LNAPL recovery system continues to efficiently remove LNAPL from the subsurface in the area of monitoring well MWRP-37. No modifications to the operational setting of the LNAPL recovery system at monitoring well MWRP-37 are recommended. |
Rachael Petraeus |
| 9/27/2019 |
Update or Other Action |
On September 27, 2019 ADEC received the transmittal letter dated September 27, 2019. The letter documents a request that, effective this year, one annual groundwater sampling event in May is appropriate rather than two semi-annual groundwater sampling events. ADEC approves the request. A review of the historical site data indicates that groundwater monitoring events in the Rocky Point Management Area have a long-term trend of concentrations showing little variability due to seasonal impacts. However, if new site groundwater monitoring results indicate increasing concentrations or changes in concentration variability at the groundwater monitoring wells sampled as part of the annual monitoring program, ADEC will request modifications in sampling frequencies in the future.
|
Rachael Petraeus |
| 8/11/2021 |
Document, Report, or Work plan Review - other |
Bulk action for all sites within the Rocky Point Management Area Operational Area Boundaries. ADEC received the Annual Area-Wide Groundwater Monitoring and Operation and Maintenance Report – 2020 for the Rocky Point Management Area in Dutch Harbor, Unalaska on May 26, 2021. Activities included inspection and maintenance of the Thermal Treatment Area (TTA) oil-water separator (OWS) and sedimentation basin; the East Point Loop Road (EPLR) OWS and sedimentation basin; and the TTA groundwater interceptor trench, collection vaults, and surface water drainage culverts. Light nonaqueous-phase liquid (LNAPL) recovery O&M activities at monitoring wells MWRP-24 and MWRP-37 are ongoing, and in 2020 were conducted on a monthly basis at monitoring well MWRP-24 and on a weekly basis at monitoring well MWRP-37. The frequency of the groundwater monitoring and O&M activities at the Rocky Point Management Area (RPMA) was reduced from semiannual to annual in 2019. ADEC recommends MWRP-15 is added to the list of wells to be sampled for Diesel Range Organics (DRO), Gasoline Range Organics (GRO), and Polycyclic Aromatic Hydrocarbons (PAHs). Additionally, ADEC requests some recommendations are provided regarding the access to monitoring wells, particularly those with free product historically observed. Several wells were unable to be sampled due to being located under shipping containers. Responses sent on July 16, 2021. |
Cascade Galasso-Irish |
| 7/7/2022 |
Document, Report, or Work plan Review - other |
Bulk action entry for the RPMA - ADEC received the Annual Area-Wide Groundwater Monitoring and Operations and Maintenance Report – 2021 Rocky Point Management Area Dated April 2022. The 2021 annual groundwater monitoring and operations and maintenance (O&M) activities included inspection and maintenance of the Thermal Treatment Area (TTA) oil-water separator (OWS) and sedimentation basin; the East Point Loop Road (EPLR) OWS and sedimentation basin; and the TTA groundwater interceptor trench, collection vaults, and surface water drainage culverts. Annual groundwater monitoring is conducted at the Rocky Point Management Area (RPMA), and O&M operations also include the ongoing light non-aqueous phase liquid (LNAPL) recovery at wells MWRP-24 and MWRP-37, which are conducted monthly.
Due to project organization changes since the last work plan was approved in 2017, ADEC requests an updated work plan will be provided to ADEC for review and approval prior to the 2023 field efforts. In future reporting, ADEC requests the hazardous wastes and contaminated media derived from the RPMA groundwater monitoring are catalogued and a Transport, Treatment and Disposal form is provided to ADEC for review and approval in accordance with 18 AAC 75.325(i) when the wastes are transferred to a final destination.
Per comment resolution, ADEC no longer supports discharge of purge water to the ground surface without granular activated carbon (GAC) treatment or being containerized and disposed of off-site. ADEC may approve foregoing soil sampling at this time if groundwater is handled appropriately in subsequent annual sampling. However, prior to site closure, soil sampling will need to occur to verify residual contamination is below current cleanup levels.
ADEC concurs with the recommendations for the 2022 season in the cover letter submitted with the 2021 report.
ADEC approved the final report on this date. |
Cascade Galasso-Irish |
| 4/10/2023 |
Document, Report, or Work plan Review - other |
Bulk action entry for the Lower Tank Site and MWRP-37. DEC reviewed and approved the Product Recovery Report 2022 RPMA on this date. DEC agrees with the continued product recovery recommended at MWRP-24 and MWRP-37; and wells IWPZ-07, MWRP-22, and TW-02 to be removed from the product recovery operations and added to the annual groundwater sampling program if no product is observed in the wells in 2023. This tech memo is a supplemental document to the 2022 annual reporting and will be added as an appendix for final approval. |
Cascade Galasso-Irish |
| 4/20/2023 |
Document, Report, or Work plan Review - other |
Bulk action entry for RPMA sites - on this date, DEC received and approved the 2022 Final Annual Area-Wide Groundwater Monitoring and Operation Maintenance Report for the Rocky Point Management Area, Dutch Harbor, Unalaska, Alaska. This document also includes the 2022 Well Status Report (Appendix E), the 2022 Cut and Cover Tank Tunnel Surface Water Trend Analysis (Appendix F), and the 2022 Product Recovery Tech Memo (Appendix G). The document has been filed under the sitewide RPMA file, Rocky Point Tank Hill, Hazard ID 509. |
Cascade Galasso-Irish |
| 6/2/2023 |
Document, Report, or Work plan Review - other |
On this date, DEC reviewed and approved the Final Sampling and Analysis Plan, Area-Wide Groundwater Monitoring and Operation and Maintenance Sampling and Analysis Plan, Rocky Point Management Area, Unalaska, Alaska. |
Cascade Galasso-Irish |
| 1/30/2024 |
Document, Report, or Work plan Review - other |
Bulk action entry for annual RPMA groundwater monitoring sites - DEC received the Annual Area-Wide Groundwater Monitoring and Operation and Maintenance Report – 2023 for the Rocky Point Management Area in Dutch Harbor, Unalaska. DEC agreed with all recommendations, including another attempt to sample MWRP-08 and -09 to monitor if concentrations in Tank Tunnel 17 are migrating to the bay. DEC had no other comments and requested the final document for review once the product recovery memo and weir inspection reports are completed and appended to the document. |
Cascade Galasso-Irish |
| 5/28/2024 |
Document, Report, or Work plan Review - other |
The objectives of the 2023 field effort were to conduct annual
groundwater monitoring and operation and maintenance (O&M) activities at the Rocky Point
Management Area (RPMA) and inspect and maintain groundwater wells. O&M activities are
conducted annually to inspect and maintain the oil water separator (OWSs) and sedimentation
basins at the Thermal Treatment Area (TTA) and the East Point Loop Road (EPLR) facilities, as
well as inspecting and maintaining the TTA groundwater interceptor trench, collection vaults,
and surface water drainage culverts. |
Kathleen Iler-Galau |
| 11/6/2024 |
Meeting or Teleconference Held |
The Qawalangin FUDS Restoration Advisory Board (RAB) Meeting was held at the Unalaska Public Library. This regional RAB incorporates five FUDS in the Qawalangin region: Amaknak FUDS, Chernofski FUDS, Cape Wislow FUDS, Fort Learnard FUDS, and Ugadaga Bay FUDS. RAB Board Members, USACE-FUDS, DEC, and members of the public were in attendance in-person, with additional stakeholders participating virtually. FUDS PMs provided updates on the status of FUDS sites. The RAB membership also updated their charter and added new members. |
Kathleen Iler-Galau |
