| Action Date |
Action |
Description |
DEC Staff |
| 10/23/1998 |
Update or Other Action |
Stockpile sampling plan approved. The stockpiled soils were last sampled in 1995. |
Donald Seagren |
| 5/25/1999 |
Site Characterization Workplan Approved |
Approved work plan for installation of additional monitoring well. MW to be installed 1 June 99. |
Donald Seagren |
| 5/25/1999 |
Cleanup Plan Approved |
Approved placing remediated soil back in excavation on-site. |
Donald Seagren |
| 7/6/1999 |
Site Ranked Using the AHRM |
By staff. This is for the NGC spill that will take the longest to clean up. |
Donald Seagren |
| 7/13/1999 |
Site Added to Database |
Contamination is diesel fuel associated with drilling fluids. |
Donald Seagren |
| 9/3/1999 |
Update or Other Action |
Reviewed GW monitoring report and Reviewed GW Well installation report. |
Donald Seagren |
| 1/3/2000 |
Update or Other Action |
Issued NFA letter for old soil stockpile being tracked as spill 95-23-01-225-01. The NFA was for the stockpile release only. Once all other on-going remediation efforts meet cleanup goals, a site closure will be considered. |
Donald Seagren |
| 1/16/2001 |
Update or Other Action |
Reviewed GW monitoring Report |
Donald Seagren |
| 5/17/2002 |
GIS Position Updated |
Heather Goldman supplied updated latitude and longitude based on a report prepared for the Kenai River Special Management Area. |
Heather Goldman |
| 10/21/2003 |
Update or Other Action |
Reviewed July 02 monitoring report. Product found in MW2 and MW3. PZ 3 dry. Monitoring, natural attenuation and product recovery on-going. |
Donald Seagren |
| 1/5/2004 |
Update or Other Action |
Received and reviewed November 2002 monitoring report. |
Donald Seagren |
| 2/10/2004 |
Update or Other Action |
File number assigned and entered into the Fileroom DB and CS DB. |
Alyce Hughey |
| 3/23/2004 |
Update or Other Action |
Review June & December 03 Monitoring Reports |
Donald Seagren |
| 3/23/2004 |
Update or Other Action |
Approved reduction of sampling frequency to annual. Also eliminated GRO & RRO from routine sampling. GRO & RRO must be included in closure sampling. |
Donald Seagren |
| 8/10/2005 |
GIS Position Updated |
Using Figure 1 from an Assessment Report Cannery Loop Unit #3, from Fluor Daniel GRI, Inc., dated February 18, 1997 in conjunction with TopoZone Pro and the KPB Parcel Lookup, entered the coordinates for this site. Metadata include No Topo Basemap, TopoZone Pro Street Map, Black and White Aerial Photo, on a Medium Size Map, View Scale 1:10,000, Coordinate Datum NAD83. High degree of confidence in accuracy of location. |
Alyce Hughey |
| 11/10/2005 |
Update or Other Action |
Reviewed 2004 annual GW monitoring report. Sampling frequency has been changed to annual and RRO & GRO analysis dropped until closure sampling. Water levels, flow direction and contaminant concentrations were comparable to previous samplling events. Passive product recovery systems are installed in 2 wells. They recovered a total of 1.7 gallons for 2004. DRO was exceeded in 2 monitor wells at 18.8 and 4.7 mg/l. DRO contamination was detected in 4 other MWs below drinking water standards. BTEX was not detected above drinking water standards. |
Donald Seagren |
| 4/28/2006 |
Update or Other Action |
Approved the abandonment of monitor well PZ-3 due to on-going construction activities. Required the submision of a letter report verifying the MW was abandon following ADEC procedures. Required reassessment of the monitor wells following construction to see if the remaining wells are adequate or if this MW needs to be re-established. |
Donald Seagren |
| 6/2/2006 |
Update or Other Action |
Reviewed the monitor well abandonment report for PZ-3. this monitor well was abandoned in preparation for facilities expansion in support of gas production. Once the construction activiites are completed, the monitoring program will be re-evaluated to see if a MW needs to be installed near this location. |
Donald Seagren |
| 7/10/2006 |
Update or Other Action |
Reviewed monitoring report dated July 06 for work conducted in July 05. Separate phase product first detected in PZ-1 during this sampling event. A Petro Pore was installed. Petro Pores are installed in 3 MWs. Total recoverd product form all MWs since inceptions is approximately 4 gallons. Samples were analyzed for BTEX & DRO. Only PZ-2 exceeded clenaup levels for DRO @ 3.54 mg/l. All other constituents were below cleanup levels. The GW data is generally comparable with previous data. 4 wells were not sampled (3 due to product and 1 was dry). Some MWs were temporarily abandoned due to on-going site work. the monitoirng network and remediation plans will be developed after site review. |
Donald Seagren |
| 4/4/2007 |
Exposure Tracking Model Ranking |
|
Donald Seagren |
| 6/15/2007 |
Site Characterization Workplan Approved |
Reviewed & approved work plan for additional site assessment and installation of 5 MWs to further define the extent of contamination at the site. Additional information will be gatherd on natural attenuation parameters to measure the amount of natural degredation. A corrective action plan will be developed based on this additional informaiton. |
Donald Seagren |
| 5/8/2008 |
Site Characterization Report Approved |
Reviewed Site Assessment and Remedial Evaluation Report CLU Pad 3, dated 24 April 08. Soil and Gw contamianted ares have been defined. GW plume and separte phase area has been defined and appears to be stable and confined to the site. Passive recovery is on-going in the 2 MWs where separate phase has been observed. Natual attenuation processes are on-going at the site. the GW is not used as a Dw source on site. Further assessment of the site and evaluation of remedial alternatives will occur during 08. |
Donald Seagren |
| 6/11/2008 |
Update or Other Action |
File transferred from Don Seagren to Paul Horwath, per Linda Nuechterlein. |
Alyce Hughey |
| 7/22/2009 |
Document, Report, or Work plan Review - other |
Reviewed the 2007/2008 Annual Groundwater Monitoring Report, dated May 8, 2009 from OASIS Environmental and prepared a summary for Paul Horwath's review and oversight. Site conditions remaine stable. The objective for the 2007/2008 work plan was to initiate groundwater monitoring and to evaluate seasonal effects on contaminant concentrations and natural attenuation. The influence of tide fluxions, times of increase spring runoff and high water/flood events, has shown that the groundwater concentrations in some of the monitoring wells could be influenced. Groundwater concentrations are improving at the site, and the monitored natural attenuation parameter results indicated that both aerobic and anaerobic degradation pathways are active at the site. The 2007 site assessment activities conducted in June and July provides evidence that the dissolved-phase/separate-phase hydrocarbon plume associated with the Wastewater Building has been defined with the drilling to two additional monitoring wells. The former Rat Hole and Reserve Pit areas show no evidence of residual hydrocarbon impacts. Free product is still being recovered from three of the monitoring wells located in the area of the Wastewater Building. |
Alyce Hughey |
| 11/3/2009 |
Update or Other Action |
Issued work plan approval for the modifications to future groundwater quality monitoring as presented in the OASIS Environmental June 6, 2009 addendum to the Cannery Loop Unit No. 3 Site Assessment and Remedial Evaluation Work Plan, dated July 15, 2007. The analytical sampling frequency is annual, DRO (AK102) will be the only petroleum analytical method performed, and this sampling, analysis, and reporting is to be performed on the eight (8) groundwater monitoring wells identified within the Oasis Adendum. |
Paul Horwath |
| 7/27/2010 |
Document, Report, or Work plan Review - other |
Reviewed the Groundwater Monitoring Report Cannery Loop Unit Pad 3, dated June 16, 2010, prepared by OASIS Environmental for Paul Horwath. The first annual groundwater sampling with a reduced number of wells being sampled for DRO and the annual collection of laboratory-based natural attenuation parameters was conducted on January 18, 2010. The DRO concentrations remained the same, decreased and increased in the sampled wells, with PZ-2 showing a significant increase in DRO concentrations. Only MW-3 Petropore passive skimmer trap was emptied with 250 milliliters being recovered, with PZ-1 and MW-2 Petropore passive skimmer traps not being emptied or checked during this sampling event. The overall assessment of the Mann-Kendall Trend Analysis indicates a slight decreasing trend in DRO concentrations. The monitored natural attenuation parameter results indicated that both aerobic and anaerobic degradation pathways are active at the site with clear evidence of magnesium and iron reduction and elevated carbon dioxide and methane concentrations within the plume area. |
Alyce Hughey |
| 2/2/2012 |
Document, Report, or Work plan Review - other |
Reviewed the 2010 Groundwater Monitoring Report - Cannery Loop Unit No., dated April 25, 2011, from OASIS Environmental. During the November 2010 groundwater sampling event, monitoring wells MW-1, MW-4, MW-5, MW-6, MW-8 and MW-12 were sampled, with DRO being detected below the groundwater cleanup levels in MW-1 and MW-5 at 0.110 mg/L and 0.220 mg/L respectively. Monitoring wells MW-2, MW-3 PZ-1 and PZ-2 was not sampled due to the presence of LNAPL. Product recovered from the three Petropore Passive Skimmers included 0.066-gallons from PZ-1, 0.092-gallons from MW-2, and 0.185-gallons from MW-3, with a total of 6.437-gallons recovered since 1998. The monitored natural attenuation parameter results, indicates that a reducing environment is present. |
Alyce Hughey |
| 6/21/2012 |
Document, Report, or Work plan Review - other |
Reviewed the 2011 Groundwater Monitoring Report, dated April 13, 2012, prepared by OASIS Environmental. During the October 2011 groundwater sampling event, four of the wells sampled tested DRO above the groundwater cleanup levels, PZ-1 at 13.0 mg/L, PZ-2 at 2.4 mg/L, MW-2 at 2.0 mg/L and MW-3 at 1.8 mg/L. The Petropore Passive Skimmer Traps were removed in wells PZ-1, MW-2 and MW-3. Recovery has been conducted in PZ-1 since 2005, with 0.514-gallons recovered, MW-2 since 1998 with 4.05-gallons recovered, and MW-3 since 2003 with 1.94-gallons recovered. A resurvey of the monitoring wells was scheduled in 2011 due to some of the wells heaving from frost; however, due to heavy snow fall the resurvey was postponed. The next groundwater sampling event is scheduled for 2013. |
Alyce Hughey |
| 6/21/2012 |
Update or Other Action |
Site transferred from Paul Horwath to Peter Campbell, per Paul Horwath. |
Alyce Hughey |
| 11/17/2014 |
Document, Report, or Work plan Review - other |
Reviewed the 2013 Groundwater Monitoring Report, dated September 2014, prepared by SLR. During the September 2013 groundwater sampling event, four of the wells sampled tested DRO above the groundwater cleanup levels, PZ-1 at 36.6 mg/L, PZ-2 at 2.9 mg/L, MW-2 at 66.2 mg/L and MW-3 at 21.2 mg/L. DRO concentrations at PZ-1, MW-2 and MW-3 were significantly higher than those reported from previous sampling event in 2011. The next groundwater sampling event is scheduled for 2015. |
Peter Campbell |
| 9/28/2015 |
Meeting or Teleconference Held |
Meeting held to discuss long term monitoring. Wells MW-2, MW-3, MW-8 PZ-1 and PZ-2 will be sampled every other year. Wells MW-1, MW-4 and MW-12 will be sampled every four years. Wells MW-5, MW-6, MW-7, MW-9, MW-10 and MW-11 will be gauged only. |
Peter Campbell |
| 9/20/2017 |
Document, Report, or Work plan Review - other |
CLU3 groundwater wells are monitored on a biennial and a four-year schedule. All viable wells are gauged during each sampling event. 2017 field activities will include: Sample seven wells for DRO and PAH: MW-2, MW-3, MW-5, MW-6, MW-8, PZ-1, and PZ-2. Monitoring wells MW-5 and MW-6 were removed from the sampling program; however, based on 2015 groundwater flow directions, the wells are located downgradient of contaminated wells and sampling could indicate if contamination is migrating off the pad. These wells are sampled every four years, with the next sampling event due in 2017. Three wells are sampled for DRO at a frequency of every four years and will next be sampled in 2019: MW-1, MW-4, and MW-12. MW-13; if located, will be decommissioned. |
Peter Campbell |
| 4/11/2019 |
Document, Report, or Work plan Review - other |
Review the 2017 Groundwater Monitoring Program Report. Screening for VOC's and PAH compounds in the wells with the highest petroleum impacts revealed only naphthalene above cleanup levels in PZ-1. Future sampling will be limited to DRO and naphthalene. Other PAH analytes were non-detect at levels above ADEC cleanup levels because of sample dilution due to high DRO concentrations. As hydrocarbon concentrations decrease, PAH screening will resume as the site moves toward closure. |
Peter Campbell |
| 7/29/2020 |
Document, Report, or Work plan Review - other |
Review the 2019 Groundwater Monitoring Program Report. Fourteen monitoring wells were gauged and six were used in generating the groundwater contour map. MW-4 may be iron fouled. The consulant has recommended replacing the well, ADEC has recommended treating for iron fouling first, then replacing the well if necessary. |
Peter Campbell |
| 9/8/2021 |
Document, Report, or Work plan Review - other |
Review and approve 2021 work plan. |
Peter Campbell |
| 12/15/2021 |
Document, Report, or Work plan Review - other |
Review 2021 Groundwater Monitoring Program Report. PZ-1 and PZ-2 are dry during this event, and groundwater levels were lower than average. Groundwater flow direction has reversed from usual trends, flowing to the east on the eastern side of the side and to the west on the western side instead of southwest. MW-2 and MW-3 impacted. MW-5 (offsite) concentrations are elevated but below cleanup levels. Concentrations in MW-5 increasing significantly indicating that contaminates are migrating offsite. Based on the increasing concentrations in MW-5, sampling frequency should increase from once every four years to biennially. Report recommends replacing PZ-1 and PZ-2 if they remain dry. These well locations can be supplemented with additional wells, but not removed, as they are in the proper location to monitor site impacts when groundwater is present.
|
Peter Campbell |
| 5/16/2023 |
Long Term Monitoring Workplan or Report Review |
Review and approve 2023 Groundwater Monitoring Program Draft Work Plan Addendum. |
Peter Campbell |
| 3/12/2024 |
Long Term Monitoring Workplan or Report Review |
Review 2023 Groundwater Monitoring Program Report. Well PZ-2 did not contain groundwater and could not be sampled. Well PZ-1 was the only well with DRO above the ADEC Table C groundwater cleanup level of 1,500 µg/L at a concentration 8,830 µg/L. All other analytes had results either below their respective cleanup levels or were not detected. Report recommends abandoning PZ-2 if well is dry during next sampling event. I don't see the value in abandonment, well provides data.
|
Peter Campbell |
