Site Report: Alyeska VMT East Tank Farm Biovent/ETF Summary

Site Name:	Alyeska VMT East Tank Farm Biovent/ETF Summary
Address:	Valdez Marine Terminal, East Tank Farm, Valdez, AK 99686
File Number:	1200.38.017
Hazard ID:	1435
Status:	Informational
Staff:	Pax Templeton, 9072697691 pax.templeton@alaska.gov
Latitude:	61.079945
Longitude:	-146.376495
Horizontal Datum:	WGS84

We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

This record is being used to track subsurface investigations, bioventing (Tanks 1, 5,7,9,11,& 13), product recovery (Tanks 10 and 14), and monitoring related to several source areas/spills within the East Tank Farm (ETF). The ETF consists of: fourteen 510,000 barrel crude above ground storage tanks (ASTs) within seven catalytically-blown asphalt (CBA) lined containment cells; aboveground pipes that transfer crude to and between the ASTs; 28 catch basins which collect and transport surface water from the containment cells to the onsite oily-water sewer system; and 14 oily water sewer system manholes (two per cell). Flow through groundwater beneath the CBA cells is transported by subdrains to the outlets along the along the slope to north and the north east of the ETF. Prior to 1991 when joints in the SBS liner were repaired, crude oil escaped into piping and catchment basins during routine operation of the water drawdown system. Some of the sumps and catchment basins leaked oily water into soil beneath the liner. Three large hydrocarbon contamination zones were established in 1991 and 1992. The largest of which includes Tanks 5 and 7 and is estimated to include up to 5,500 cubic yards of impacted soil. Another system/zone was created to treat impacted soil north of Tank 1. A third system was installed to treat impacted soil in area north of Tanks 11 and 13. A Bioventing system was installed in 1993 and expanded in 1995 to include the Tank 1 and Tanks 11/13 areas. It operated until 2000 when it was closed with ADEC approval. ETF groundwater and surface water monitoring began in 1995 and 1998, respectively. The surface water locations associated with the ETF include SW-7 and SW-8 (in area 58) and all surface water locations in area 54. Cross-reference with 1200.38.058 (Alyeska VMT East Tank Farm Tank 14 Draw Sump 54-DS-14). Alyeska's reporting for 1200.38.058 appears to be conducted under the record for this site (Alyeska VMT East Tank Farm Biovent/ETF Summary).

Action Information

Action Date	Action	Description	DEC Staff
7/22/1992	Update or Other Action	Received 1991 Tank Farm Sumps Subsurface Investigation Status Report, which concludes that the lateral extent of contamination near the sump associated with Tank 7 may not have been delineated. Report does not include figures showing where samples were collected. Concentrations up to 9,810 mg/kg residual-range hydrocarbons and 1,100 mg/kg diesel (EPH). GRO and BTEX results were below Method Two migration to groundwater but results should be considered biased low due to holding time exceedance. Report also concludes that soils near sumps for Tank 6,9,10, & 12 did not exceed the July 1991 Method B cleanup levels.	Keather McLoone
3/25/1993	Update or Other Action	Receipt of ETF Tank # 5 and Tank # 7 Subsurface Soil Investigation. Report includes boring logs. Thirteen borings were advanced and one to three soil samples selected from each boring based on staining and/or PID readings. TPH-diesel ranged from ND to 7,800 mg/kg, TPH-gasoline from ND to 2,200 mg/kg, TRPH from ND to 12,000 mg/kg, and benzene from ND to 0.7 mg/kg. Heterotrophic plate counts from six soil samples ranged from 320 to 18,000 CFU/mL. Residual-range hydrocarbons were also calculated by subtracting VPH and EPH.	Keather McLoone
6/28/1993	Cleanup Plan Approved	(Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Staff approved Tank 5 and Tank 7 remediation plan without comments. Bioventing selected as the remedy.	Dave Connor
6/28/1993	Site Characterization Report Approved	(Old R:Base Action Code = SA2R - Phase II SA Review (CS)). Subsurface Investigation, East Tank Farm, Valdez Marine Terminal document reviewed and approved by staff.	Dave Connor
11/15/1993	Document, Report, or Work plan Review - other	ADEC received the Subsurface Investigation ETF VMT submitted by EMCON dated November 1993. Previous investigations involved the excavation of 68 test pits, advancement of 28 soil borings, and the installation of monitoring well 1 (MW-1). The 1993 work involved installing and sampling additional borings to determine extent of contamination, install monitoring wells, and sampling five subdrains to identify potential groundwater impacts. The investigation identified sixteen new releases. All of the cells contained contamination above ADEC cleanup levels except cell 2. Note: cell 4 was not sampled, but is known to contain significant contamination along the north side of Tank 7. Estimated contaminated soil volumes on site include the following: Cell 1 = 3,365 cy; Cell 3 = 140 cy; Cell 5 = 35 cy; Cell 6 = 80 cy; and Cell 7 = 1710 cy. Groundwater conditions in Cell 1, 3, 5, and 7 were the following: GW in Cell 1 contained a sheen; insufficient GW for sampling in Cell 3; 0.04 feet of free product in cell 5; and insufficient GW for sampling and 0.01 feet of floating product in Cell 7.	Former Staff
1/24/1994	Update or Other Action	(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Bioventing design document and installation report reviewed by the department. 3 year goal for bioremediation, Alyeska to perform quarterly shutdown tests.	Scott Rose
5/16/1994	Update or Other Action	Receipt of Workplan - 1994 Soil Bioventing Project East Tank Farm. Workplan includes a table cross referencing Alyeska Spill Response Numbers (SRNs) and project descriptions for the areas intended to be treated by bioventing as well as proposed leaching assessment, groundwater recovery, excavation, and groundwater remediation. In a January 1995 letter, ADEC stated that it didn't approve of the leaching assessment (see 1200.38.005). The 1991 and 1992 subsurface investigations identified the 3 suspected source areas (Tanks 1, 5, 7, 9, 11, and 13) mentioned in the problem statement at the top of this webpage. The 1993 subsurface investigation identified additional suspected source areas at Tanks 2, 3, 10, 12, and 14. Requested the expansion of the system. Quarterly monitoring reports were to be submitted to department. Reports to include respiration rates, degradation rates, soil gas monitoring data, GW quality data, and air flow rates.	Keather McLoone
4/25/1995	Update or Other Action	Receipt of Final - Remedial Action Status Report - 1994 Soil and Groundwater Remediation Project. Report covers bioventing system installations (including soil gas sampling), excavation of oily soils, and groundwater recovery system installations. Report includes vent well boring logs and well details. Also, in Appendix F, a copy of the Status Report, Bioventing Systems Start-up and Testing - Tank 1, Tanks 5/7 Extension, and Tank 13 (dated December 19, 1994) which describes conditions, operational problems, and design deviations from the workplan. Excavation was conducted near Tank 14 removing ~ 80 cubic yards of contaminated soil from "smear" zone. This excavation was limited by the expense of liner replacement and compromising liner integrity for extended periods of time. Excavation was also conducted near Tank 12. No analytical confimration samples collected, only observations and field screening. Water table is present only seasonally (shot rock/soil interval above bedrock not saturated).	Keather McLoone
10/25/1995	Site Added to Database	Crude oil contamination.	Scott Rose
2/1/1996	Update or Other Action	Receipt of Bioventing Status Reports, East Tank Farm, VMT - Annual Shutdown Respiration Test, Tank 5/7 System - System Startup and Quarterly Respiration Tests, Tank 1 and Tank 13.	Keather McLoone
2/1/1996	Update or Other Action	Receipt of Summary of Analytical Results: ETF, Groundwater Monitoring and Recovery Well Report dated December 19, 1995. Samples collected from groundwater wells T3-MW1 and T9-MW1 and recovery wells T10-MW1, T14-MW1, T14-MW2, T14-MW3. Recommends continuation of groundwater monitoring and recovery.	Keather McLoone
12/13/1996	Update or Other Action	Date in Footer of Bioventing Status Reports - East Tank Farm, VMT - Annual Shutdown Respiration Test - Tank 1 and Tank 13. Three shutdown respiration tests are included in this report.	Keather McLoone
5/6/1999	Update or Other Action	Receipt of Site Closure Workplan - ETF, VMT - Tank 5, 7, and 9 Bioventing System. This document provides project background information including subsurface investigations in 91, 92, 93 and 94. Concludes that the reduction in the contaminant concentrations as indicated by reduced biodegradation rates coupled with new cleanup standards justifies termination of bioventing and decommissioning of system upon ADEC approval. Alyeska cover letter accompanying this plan and the status report (all 3 same date received) indicates that the closure plan for the other 2 "sites" pending on the resolution of these closure issues.	Keather McLoone
5/6/1999	Update or Other Action	Receipt of Final Bioventing Status Report - ETF, VMT - Shutdown Respiratin Test - Tank 5, 7, and 9; Tank 1; and Tank 13 systems.	Keather McLoone
5/6/1999	Update or Other Action	Receipt of Summary Report: ETF, 1998 Annual Groundwater Monitoring and Recovery dated December 30, 1998. Not enough water available to collect at T10-MW1. Samples collected at three recovery wells adjacent to Tank 14, T14-MW1, T14-MW2, and T14-MW3. Only DRO in T14-MW1 above Table C. Report recommends that Alyeska pursue ADEC's concurrence with ten times rule. Alyeska's cover letter accompanying the report suggests that this concurrence has been granted, although there is no documentation in administrative file to support that.	Keather McLoone
3/24/2000	Update or Other Action	Receipt of Final 1999 East Tank Farm Bioventing Systems Status Report. Biodegradation rates had been relatively constant in the bioventing areas. EMCON did not observe evidence of active bioremediation or oxygen-deficient soil gas during the 1999 field effort. Alyeska cover letter accompanying the report indicates that repairs were made to damaged piping segments and that additonal repairs and tests will continue until DEC approved the closure submitted in 1999 for Tank 5, 7, 9 system.	Deborah Williams
3/28/2000	Update or Other Action	Reciept of Final Summary Report for 1999 Groundwater Monitoring and Recovery dated January 12, 2000. Between 1992 and 1995, several GW monitoring wells and GW recovery wells were installed in the ETF to assess the petroleum hydrocarbon impacts. A total of five MWs have been installed in the ETF. A total of four GW recovery wells have been installed at the ETF. The recovery pumps were initially installed in the wells in August 1995 and continue to operate seasonally. Results of the GW monitoring activities conducted in 1999 indicate that groundwater has been impacted at levels exceeding the groundwater cleanup levels.	Deborah Williams
6/15/2000	Update or Other Action	ADEC (Frechione) approves the closure of the bioventing treatment system for the ETF Tank 5/7 system (which includes tank 9). However, the contaminated site will remain open and ground and surface water will continue to be monitored to ensure ground and surface water levels are not violated.	Deborah Williams
6/18/2001	Update or Other Action	Receipt of Final Report, East Tank Farm, 2000 Annual Groundwater Monitoring and Recovery. DRO and RRO concentrations in T10-MW1 and RRO in T14-MW1 above Table C levels.	Keather McLoone
7/9/2001	Update or Other Action	Receipt of 3 page letter (covering 3 "sites" in addition to ETF) entitled Contaminated Sites Program Workplan for the 2001 Construction Season, VMT. Groundwater at the East Tank Farm was pumped and treated from 1995 thru 2000, after which water quality samples were collected from the recovery wells. The sampling program was to be continued in 2001 (analysis for BTEX, GRO, DRO. RRO). Surface water samples to be collected for BTEX, DRO, PAH.	Keather McLoone
11/26/2001	Update or Other Action	Receipt of ETF Bioventing System Decommissiong Workplan.	Keather McLoone
4/1/2002	Update or Other Action	Receipt of Final Report, ETF 2001 Semi-Annual Groundwater Monitoring. Includes a table summarizing environmental activities at the the ETF to date. Four groundwater wells and 2 surface water locations sampled. Continued monitoring to include the 4 wells and 7 surface water locations. Concentrations in wells T14-MW2 and T14-MW3 continue the trend observed since 2000 and remain below Table C values. DRO and RRO in wells T10-MW1 and T14-MW1 exceed Table C.	Keather McLoone
5/1/2003	Update or Other Action	Receipt of Baseline Water Quality Monitoring and East Tank Farm Groundwater Monitoring 2003 Work Plan - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document	Keather McLoone
3/4/2004	Update or Other Action	Receipt of 2004 Work Plan Baseline Water Quality and East Tank Farm Ground Water Monitoring - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document.	Keather McLoone
5/23/2005	Update or Other Action	Receipt of 2005 Work Plan Baseline Water Quality Monitoring and East Tank Farm Ground Water Monitoring - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document.	Keather McLoone
6/26/2006	Update or Other Action	Receipt of Final 2006 Work Plan - Baseline Water Quality Monitoring and East Tank Farm Ground Water Monitoring - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document.	Keather McLoone
6/6/2007	Update or Other Action	Receipt of VMT Baseline Water Quality Monitoring and East Tank Farm Monitoring 2007 Work Plan. See file 1200.38.054 for this document.	Keather McLoone
12/18/2007	Exposure Tracking Model Ranking	Initial ranking with ETM completed.	Pam Clemens
3/14/2008	Update or Other Action	Following 2001, water quality monitoring activities and results from the ETF had not been reported but are included in the monitoring report that was submitted to ADEC on this date entitled East Tank Farm Summary Report Valdez Marine Terminal. Review of laboratory review checklists (K.McLoone 8/12/08) found no issues in 2007 data (when the requirement for checklists began) that would impact data quality. T10-MW1 and T14-MW3 recovery pumps will be reinstalled, if feasible. A passive recovery system was also suggested as another possibility. A letter was sent by ADEC (Clemens), concurring with continued monitoring. Report also covers bioventing system closure activities which included drilling and sampling to document soil conditions at the time of closure. Seven borings advanced included 2 north of Tank 1, 3 north of Tank 3, and 2 north of Tank 13. Fifteen samples and two duplicates were submitted to the laboratory. Samples associated with each of these 3 Tanks exceeded Method 2 migration to groundwater for DRO and benzene (up to 6,100 and 0.41 mg/kg respectively). Samples associated with Tank 7 also exceeded these criteria for GRO up to 310 mg/kg. Closure also included cutting off vertical system components. The most recent groundwater results are as follows: T10-MW1 (9/25/2002) with DRO and RRO above Table C, T14-MW1 (10/7/2007) with RRO above Table C, T14-MW2 (10/7/2007) no results above Table C. The last sample collected for DRO at T14-MW3 was on 10/20/2006 and its duplicate exceeded Table C. The last sample collected for RRO at T14-MW3 was on 6/5/2006 and exceeded Table C. Sampling was discontinued at T10-MW1 and T14-MW3 due to the observation of oil droplets in these wells.	Keather McLoone
4/4/2008	Meeting or Teleconference Held	During the April 4, 2008 meeting with Jan Shifflett (Alyeska) and Scott Rose (SLR), the report entitled East Tank Farm Summary Report received about a month prior was briefly discussed. The re-installation of recovery pumps in the two wells where crude oil droplets were found was not discussed, as mentioned in Alyeska's cover letter (#15148, dated March 10, 2008) which accompanied the report.	Pam Clemens
6/6/2008	Update or Other Action	Receipt of ETF 2008 Water Quality Monitoring Work Plan VMT. Email received 6/10 from SLR clarifies that it is still intended that recovery pumps be reinstalled although not specifically discussed in workplan. Recovery wells have not been operated since 2000.	Keather McLoone
8/25/2008	Update or Other Action	Confirmed that although recovery pumps have not yet been installed, they are still to be installed once the work is approved thru Alyeska's system.	Keather McLoone
2/13/2009	Update or Other Action	Receipt of East Tank Farm Water Quality Monitoring Report by SLR. Four groundwater well and six surface water locations are part of this monitoring effort. Only two wells were sampled in the spring (early summer) and one well in the fall due to product presence. The fall event was the first time that product has been observed in T14-MW1. No exceedances of regulatory criteria for samples that were collected. Monitoring will continue in 2009. Recovery pumps may be reinstalled and passive recovery or other systems may be evaluated in 2009. Report review included laboratory review checklist. RRO result for T14-MW2 (fall) considered by the laboratory to be estimated based on imprecision of MS/MSD results. Benzene result for T14-MW2 (fall) should be considered estimated due to imprecision of field duplicate results.	Keather McLoone
5/22/2009	Document, Report, or Work plan Review - other	Review of East Tank Farm 2009 Water Monitoring Work Plan. Two groundwater and surface water sampling events will be conducted (spring and fall). Four groundwater recovery wells will be sampled: T14-MW1, T14-MW2, T14MW3, and T10MW1. Recovery pump installation is planned for wells T10-MW1 and T14MW3.	Keather McLoone
5/6/2010	Document, Report, or Work plan Review - other	Review of East Tank Farm Water Quality Monitoring Report (2009). Two groundwater and surface water sampling events were conducted and results were below Table C and water quality criteria, respectively. Recovery pumps were not installed in 2009 as planned, due to scheduling conflicts. These will be installed in 2010.	Keather McLoone
5/24/2010	Document, Report, or Work plan Review - other	Review of 2010 East Tank Farm Water Monitoring Work Plan. Semi-annual groundwater and surface water sampling program. Reinstallation of recovery pumps in 3 (T10-MW-1, T14-MW-1, and T14-MW-3) of the 4 wells is also planned. Six surface water locations are included in this sampling program.	Keather McLoone
2/17/2011	Document, Report, or Work plan Review - other	Review of East Tank Farm 2010 Water Quality Monitoring Report submitted on this date. Review included laboratory data review checklist. Four groundwater well and five surface water locations were visited during a spring and fall events. Only T-14-MW2 was sampled in the spring, the other well/event combinations did not include collection of laboratory sample because of the presence of free-phase hydrocarbons. There were no exceedance of surface water quality criteria. Once again, recovery pumps were not installed as planned.	Keather McLoone
5/23/2011	Document, Report, or Work plan Review - other	Date of receipt of Valdez Marine Terminal 2011 East Tank Farm Water Quality Monitoring Work Plan. Alyeska proposes the same work they proposed last year, including the re-installation of recovery pumps.	Keather McLoone
6/10/2011	Update or Other Action	Email communication on today's date regarding the reason for the repeated delays in getting the recovery pumps reinstalled. Alyeska provided a reasonable explanation and assurance that they are committed to getting the pumps installed this year.	Keather McLoone
7/6/2011	Document, Report, or Work plan Review - other	Date of receipt of Valdez Marine Terminal 2011 IWWS Subsurface Investigation Workplan. The primary objectifve for this project "are to determine if the video anomaly observed in 2010 is still present, to assess the quality of water that migrates under Tank 4 (below the liner within trenches) and discharges to the north, and to assess potential soil contamination in the vicinity of the anomaly (if applicable)." If the anomaly is no longer present, no further assessment will be conducted beyond addint the French drain outlet to the "Baseline" water quality monitoring program.	Keather McLoone
1/23/2012	Document, Report, or Work plan Review - other	Date of receipt of 2011 Water Quality Monitoring Report. Groundwater samples were not collected during either sampling event because of the presence of free product (droplets) in water purged from the four wells. Four surface water samples were collected from 54-SW-4, 54-SW-5, 58-SW-7, 58-SW-8. Due to a lack of water at location 54-SW-4, a sample was collected from 400 feet downgradient (but not directly downgradient - see Figure 2). Location 54-SW-3 was not sampled during both events due to a lack of water. Surface water results were below applicable criteria. Product recovery pumps were installed and operated for a very short period of time before winter storage. The report says they will be redeployed in the spring of 2012.	Keather McLoone
2/14/2012	Document, Report, or Work plan Review - other	Date of receipt of East Tank Farm, Tank 4 IWWS Subsurface Investigation Report. This work did not find water presnt at the french drain CMP outfall so no water was sampled. The video inspection was conducted and the anomaly that was seen in the 2010 video could not be found; therefore, Alyeska does not plan to assess this further at this time.	Keather McLoone
5/4/2012	Document, Report, or Work plan Review - other	Date of receipt of 2012 Water Monitoring Plan. Four groundwater wells will have recovery pumps (re)installed. All 4 of these wells had free-hase hydrocarbons in August 2010. These wells will be checked during the spring and fall of 2012 and if after operation of the recovery pumps, product is not present, they will be sampled. Five surface water locations will be sampled twice during 2012.	Keather McLoone
12/17/2012	Document, Report, or Work plan Review - other	Received the 2012 Water Quality Monitoring Report. Recovery pumps operated in two wells between June and October, 2012, and a total of 11,886 gallons of hydrocarbon-impacted groundwater was recovered and treated in the ballast water treatment plant. The pumps were removed in October for dry winter storage and will be reinstalled in 2013. Of note, pictures and/or field notes show thin, whispy smears of sheen on purge water from four wells (T14-MW1, T14-MW2, T14-MW3, and T10-MW1. Groundwater samples were not collected from these wells. No exceedances were noted in wells that were sampled.	Richard Bernhardt
5/23/2013	Site Characterization Workplan Approved	Received and approved the 2013 work plan to include ground- and surface-water monitoring. Recovery pumps will be reinstalled in four monitoring wells near Tanks 10 and 14 to recover and treat contaminated groundwater.	Richard Bernhardt
2/7/2014	Site Characterization Report Approved	On this date, ADEC received the 2013 Water Quality Monitoring Report East Tank Farm Valdez Marine Terminal dated January 2014. Recovery pumps operated in four wells between June and September, 2013, and a total of 388,752 gallons of hydrocarbon-impacted groundwater was recovered and treated in the ballast water treatment plant. The pumps were removed in September for dry winter storage and will be reinstalled in 2014. Surface water samples were collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain TAH and TaqH concentration about WQS.	Grant Lidren
2/26/2014	Meeting or Teleconference Held	Meeting with SLR and Alyeska on this date. Alyeska indicates piping will be upgraded in next five years. MWs will be relocated as practicable.	Grant Lidren
5/22/2014	Risk Assessment Workplan Approved	On this date, ADEC approved the 2014 East Tank Farm Water Quality Monitoring Work Plan, Valdez Marine Terminal submitted by SLR, dated April 30, 2014.	Grant Lidren
8/5/2014	Update or Other Action	On this date, contamination was discovered at the Tank 6 Catch Basin during basin upgrades. Contamination is assumed historic from failed containment seals allowing oil to seep under liner. PERP is currently managing this spill event with the spill name: VMT East Tank Farm - Tank 6 catch basin, Spill # 14229921701.	Grant Lidren
12/19/2014	Site Characterization Report Approved	On this date, ADEC received the 2014 Water Quality Monitoring Report East Tank Farm Valdez Marine Terminal dated December 2014. Recovery pumps operated in four wells between August and October 2014. A sheen was present during inspection of the groundwater in all four wells. A total of 1,102,421 gallons of hydrocarbon-impacted groundwater was recovered and treated in the ballast water treatment plant. Approximately 0.42 gallons of this was estimated to be hydrocarbons based off one sample collected from three of the wells in October. The pumps were removed in October for dry winter storage and will be reinstalled in 2015. Surface water samples were collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain TAH and TaqH concentration about WQS. No surface water samples were collected from 54-SW-3 due to lack of water.	Grant Lidren
5/19/2015	Site Characterization Workplan Approved	On this date, ADEC approved the 2015 Water Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR dated May 5, 2015.	Grant Lidren
6/24/2015	Site Visit	ADEC visited the site with Alyeska and SLR on this date.	Grant Lidren
6/24/2015	Update or Other Action	On this date, contamination was discovered at the Tank 4 Catch Basin 4-6 during basin upgrades. Contamination is assumed historic from failed containment seals allowing oil to seep under the liner. PPR is currently managing this spill event.	Grant Lidren
7/16/2015	Site Characterization Report Approved	The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2015 Valdez Marine Terminal IWWS Excavation Sampling Work Plan submitted by SLR and dated July 2015. ADEC has no objections to the Work Plan and SLR may proceed.	Grant Lidren
9/9/2015	Update or Other Action	DEC received the Final Cleanup Report – Spills #7674, 7669, 7706, 7704, 7705, and 7738 submitted by Alyeska dated September 9, 2015. This cleanup report documents historic spills encountered during the 2015 IWWS catch basin upgrades in Cell 2 & 7. A total of six areas of contamination were encountered. Three areas of contamination encountered in Cell 2 include: 10 gallons at Catch Basin 54-4-6, 54 cubic yards of contaminated soil was removed; 3 gallons at Man Hole 54-2-4, 29 cubic yards of contaminated soil was removed; and three gallons at Man Hole 54-2-3, 32 cubic yards contaminated soil was removed. Three areas of contamination encountered at Cell 7 include: 20 gallons at Man Hole 54-2-13, 39 cubic yards of contaminated soil was removed; 5 gallons at Catch Basin 54-4-26, 70 cubic yards of contaminated soil was removed; and 7 gallons at Man Hole 54-2-14, 124 cubic yards of contaminated soil removed.	Grant Lidren
3/18/2016	Site Characterization Report Approved	On this date, ADEC received the East Tank Farm Industrial Wastewater System [IWWS] Excavation Soil Sampling Report submitted by SLR dated March 2016. During upgrades to the IWWSs in cell 2 and cell 7, historic contamination was encountered. Excavations were advanced to remove existing catch basins, manholes, and a portion of the IWWS pipping. Approximately 504 cy of suspected contaminated soil was transported to the WTF contaminated stockpile area. Suspected clean fill was stockpile pending analytical samples for reuse. This included a 750 cy stockpile in cell 2 and a 150 cy stockpile in cell 7. Confirmation soil samples from the base of the excavations was limited due to metal retaining walls in the man hole excavations, catch basin 54-CB-4-26 underwater, catch basin 54-CB-4-6 bedrock exposure, and catch basin 54-CB-4-25 metal retaining walls. A total of 34 analytical soil samples were collected. All man holes and catch basin excavations contained contaminant concentrations above cleanup levels (note: catch basin 54-CB-4-26 did not contain contaminant concentrations above cleanup levels but contained a sheen). This included man holes: 54-MH-2-3(cell 2); 54-MH-2-4 (cell 2); 54-MH-2-13 (cell 7); 54-MH-2-14 (cell 7) and catch basins 54-CB-4-6 (cell 2); 54-CB-4-25(cell 7); and 54-CB-4-26 (cell 7). Soil samples were collected near the lower portion of the excavations at a depth of 10 to 15 feet bgs where former catch basin structures connected to the existing IWWS piping. Confirmation soil samples collected from the catch basin and the two man holes from cell 2 contained DRO up to 3,090 mg/kg and benzene up to 0.0606 mg/kg. Confirmation soil samples collected from the two catch basins and the two man holes from cell 7 contained DRO up to 6,640 mg/kg, RRO up to 10,700 mg/kg, and benzene up to 0.104 mg/kg. Soil samples collected from the stockpiles in cell two and cell seven were below cleanup levels. The excavation were capped with the stockpiled soil and clean fill.	Grant Lidren
4/29/2016	Site Characterization Report Approved	On this date, ADEC received the 2015 Water quality Monitoring Report East Tank Farm, Valdez Marine Terminal submitted by SLR dated March 2016. Due to the industrial waste water upgrades, the groundwater recovery wells were not installed in monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1 in 2015. Ground water samples collected from all four monitoring wells contained detectable concentrations of petroleum constituents, but below cleanup levels. However, water bailed prior to sampling contained a hydrocarbon sheen. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain TAH and TaqH concentration about WQS. No surface water samples were collected from 54-SW-3 due to lack of water.	Grant Lidren
5/25/2016	Site Characterization Workplan Approved	The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2016 Water Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated May 2016. ADEC has no objections to the Work Plan and SLR may proceed.	Grant Lidren
7/26/2016	Site Characterization Workplan Approved	The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the East Tank Farm Industrial Wastewater System (IWWS) Excavation Sampling Work Plan Valdez Marine Terminal submitted by SLR and dated July 2016. ADEC has no objections to the Work Plan and SLR may proceed.	Grant Lidren
10/17/2016	Update or Other Action	DEC received the Final Cleanup Report – Spills 8068, 8087, 8099, 8101, 8111, 8114, 8133, 8134, 8151, 8152, and 8154 submitted by Alyeska dated October 17, 2016. This cleanup report documents historic spills encountered during the 2016 IWWS catch basin upgrades in Cell 4 & 6. A total of eleven areas of contamination were encountered. Five areas of contamination encountered in Cell 4 include: 5 gallons at Catch Basin 54-4-15, 73 cubic yards of contaminated soil was removed; 3 gallons at Man Hole 54-2-8, 68 cubic yards of contaminated soil was removed; 5 gallons at Man Hole 54-2-7, 61 cubic yards of contaminated soil was removed; 1/2 gallons at catch basin 54-4-16A, 26 cubic yards of contaminated soil was removed; and 1/4 gallons at Catch Basin 54-4-16, 7 cubic yards contaminated soil was removed. Six areas of contamination encountered at Cell 6 include: 3 gallons at Man Hole 54-2-11, 148 cubic yards of contaminated soil was removed; 10 gallons at Catch Basin 54-4-21, 372 cubic yards of contaminated soil was removed; 2 gallons at Man Hole 54-2-12, 73 cubic yards of contaminated soil was removed; 4 cups at Catch Basin 54-4-23, 10 cubic yards of contaminated soil was removed; 2 cups at Catch Basin 54-4-24A, 10 cubic yards of contaminated soil was removed; and 4 cups at catch basin 54-4-22, 22 cubic yards of contaminated soil removed.	Grant Lidren
2/9/2017	Site Characterization Report Approved	On this date, ADEC received the East Tank Farm Industrial Wastewater System [IWWS] Excavation Soil Sampling Report submitted by SLR dated January 2017. During upgrades to the IWWS, in cell 4 and cell 6, historic contamination was encountered. Excavations were advanced to remove existing catch basins, manholes, and a portion of the IWWS pipping. Contamination, when encountered in the excavations, was observed at the depth of the T-connection between the vertical catch basin and the horizontal IWWS lines. Approximately 880 cy of suspected contaminated soil was transported to the WTF contaminated stockpile area. Suspected clean fill was stockpile in the same tank farm cell it was excavated; this included a 1,599 cy stockpile in cell 4 and a 1,284 cy stockpile in cell 6. Confirmation soil samples from the base of the excavations was limited due to metal retaining walls in the man hole excavations, bedrock exposure, and metal retaining walls. A total of 55 analytical soil samples were collected. All man holes and catch basin excavations confirmation soil samples contained contaminant concentrations above cleanup levels except catchment basin 54-CB-4-13 and manholes 54-MH-2-7 & 54-MH-2-8 all located within Cell #4. Soil samples were collected near the lower portion of the excavations at a depth of 10 to 15 feet bgs where former catch basin structures connected to the existing IWWS piping. Confirmation soil samples collected from the four catch basins and the two man holes from cell 4 contained DRO up to 6,050 mg/kg, benzo(a)anthracene up to 0.768 mg/kg, and benzo(a)pyrene up to 0.329mg/kg. Confirmation soil samples collected from the four catch basins and the two man holes from cell 6 contained DRO up to 9,660 mg/kg, RRO up to 12,000 mg/kg, benzo(a)anthracene up to 0.421 mg/kg, and benzo(a)pyrene up to 0.71mg/kg(note: several other PAHs had elevated LODs or DLs above ADEC cleanup levels). Soil samples collected from the stockpiles in cell 4 and cell 6 were below cleanup levels. The excavation were capped with the stockpiled soil and clean fill.	Grant Lidren
2/15/2017	Site Characterization Report Approved	On this date, ADEC received the 2016 Water Quality Monitoring Report East Tank Farm, Valdez Marine Terminal submitted by SLR dated December 2016. Due to the industrial waste water upgrades, the groundwater recovery wells were not installed in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1 in 2016. Ground water samples were collected June and September from all four monitoring wells. Only MW T10-MW1 contained contaminant concentrations above cleanup levels with DRO up to 10.3 mg/L and RRO up to 7.15 mg/L during the September sampling event. During well purging, sheen and hydrocarbon droplets were encountered in wells T14-MW1 and T10-MW1 during the June sampling event and in all four wells during the September sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.	Grant Lidren
5/18/2017	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the East Tank Farm Industrial Wastewater System (IWWS) Excavation Sampling Work Plan Valdez Marine Terminal submitted by SLR and dated May 2017. Excavations will occur in the last two cells: cell 1 and cell 5. ADEC has no objections to the Work Plan and SLR may proceed.	Grant Lidren
5/24/2017	Site Characterization Workplan Approved	The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2017 Water Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated May 2016. ADEC has no objections to the Work Plan and SLR may proceed pending the following comment: 10% of the worst case groundwater samples need to be analyzed by method 8260 to include petroleum VOCs and PAHs by 8270. This should be for monitoring well T10-MW1 during the fall event.	Grant Lidren
1/10/2018	Site Characterization Report Approved	On this date, ADEC received the East Tank Farm Industrial Wastewater System [IWWS] Excavation Sampling Report submitted by SLR dated December 2017. During upgrades to the IWWS, in cell 1 and cell 5, historic contamination was encountered. Excavations were advanced to remove existing catch basins, manholes, and a portion of the IWWS pipping. Contamination, when encountered in the excavations, was observed at the depth of the T-connection between the vertical catch basin and the horizontal IWWS lines. Approximately 613 cy of suspected contaminated soil was transported to the WTF contaminated stockpile area. Suspected clean fill was stockpile in the same tank farm cell it was excavated; this included a 744 cy and 1,452 cy stockpile in cell 1 and a 3,143 cy and 880 cy stockpile in cell 5. Confirmation soil samples from the base of the excavations was limited due to metal retaining walls in the man hole excavations, bedrock exposure, and metal retaining walls. A total of 54 analytical soil samples were collected. All man holes and catch basin excavations confirmation soil samples contained contaminant concentrations above cleanup levels except catchment basin 54-CB-4-17(cell 5) and manhole 54-MH-2-1 (Cell 1). Cell 1 catchment basin 54-CB-4-1 contained a puddle with sheen and a puddle of black viscous fluid. Cell 1 catchment basin 54-CB-4-3 contained a layer of thin black viscous fluid and a black tar like deposit. Cell 5 Catchment basin 54-CB-4-17 contained groundwater flowing north to south with an observable sheen. Soil samples were collected near the lower portion of the excavations at a depth of 10 to 15 feet bgs where former catch basin structures connected to the existing IWWS piping. Confirmation soil samples collected from the four catch basins and the two man holes from cell 1 contained DRO up to 15,700 mg/kg, RRO up to 26,800 mg/kg, benzo(a)anthracene up to 0.765 mg/kg, and benzo(a)pyrene up to 0.806 mg/kg. Confirmation soil samples collected from the four catch basins and the two man holes from cell 5 contained DRO up to 1,540 mg/kg, benzo(a)anthracene up to 1.94 mg/kg, and benzo(a)pyrene up to 1.67 mg/kg, benzo[b]flouanthene up to 2.08 mg/kg and dibenzo[a,h]anthracene up to 0.237 mg/kg (note: several other PAHs had elevated LODs or DLs above ADEC cleanup levels). Soil samples collected from the stockpiles in cell 1 and cell 5 were below cleanup levels. The excavation were capped with the stockpiled soil and clean fill.	Grant Lidren
3/19/2018	Site Characterization Report Approved	On this date, ADEC received the 2017 East Tank Farm Water Quality Monitoring Report submitted by SLR dated March 2018. Due to the industrial waste water upgrades, the groundwater recovery wells were not installed in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1 in 2017. Ground water samples were collected June and September from all four monitoring wells. Only MW T14-MW3 contained contaminant concentrations above cleanup levels with DRO at 3.54 mg/L and RRO at 3.11 mg/L during the September sampling event. During well purging, sheen and hydrocarbon droplets were encountered in T10-MW1 during the June and September sampling event. Additionally, free phase hydrocarbons were observed in the sample bottles for T19-MW1 during the September sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.	Grant Lidren
6/6/2018	Site Characterization Workplan Approved	The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2018 Water Quality Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated June 2018. ADEC has no objections to the Work Plan and SLR may proceed.	Grant Lidren
4/10/2019	Site Characterization Report Approved	On this date, ADEC received the 2018 East Tank Farm Water Quality Monitoring Report submitted by SLR dated April 2019. Due to the lack of free product, product recovery was not conducted in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1. Ground water samples were collected June and September from these four monitoring wells. Groundwater samples analyzed for GRO, DRO, RRO and BTEX did not contain contaminant concentrations above Table C cleanup levels. During well purging, sheen and hydrocarbon odor were encountered in T10-MW1 during the June and September sampling event. Additionally, free phase hydrocarbons were observed in T14-MW1 during the June sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.	Grant Lidren
5/10/2019	Site Characterization Workplan Approved	On this date, the ADEC received and reviewed the 2019 Water Quality Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated April 2019. ADEC has no objections to the Work Plan and SLR may proceed.	Grant Lidren
8/20/2019	Site Visit	Visited site with Alyeska, SLR, and DNR on this date. Pictures taken.	Grant Lidren
12/20/2019	Site Characterization Report Approved	On this date, ADEC received the 2019 East Tank Farm Water Quality Monitoring Report submitted by SLR dated April 2019. Due to the lack of free product, product recovery was not conducted in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1. Ground water samples were collected June and September from these four monitoring wells. Groundwater samples analyzed for GRO, DRO, RRO and BTEX. Monitoring well T10-MW1 was also analyzed for PAHs. None of the monitoring wells contained contaminant concentrations above Table C cleanup levels. During well purging, sheen and hydrocarbon odor were encountered in T10-MW1 during the June and September sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.	Grant Lidren
5/28/2020	Site Characterization Workplan Approved	ADEC received the 2020-2023 Water Quality Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated May 2020. Groundwater and surface water is approved to be sampled 2020 through 2023.	Grant Lidren
11/3/2022	Document, Report, or Work plan Review - other	The annual monitoring report was reviewed and approved. Four recovery wells were sampled as monitoring wells, and five surface water sample locations were sampled in May and September of 2021. Monitoring well results had contaminant concentrations below the DEC Groundwater clean up levels, except for diesel range organics and residual range organics exceeded cleanup levels in well T14-MW3 in May. There were some quality control issues with surface water samples analyzed for polycyclic aromatic hydrocarbons that were non-detect concentrations for all analytes but poor surrogate recoveries for a few of the analytes resulted in a rejection of the reported non-detect concentrations.	Laura Jacobs
12/5/2023	Document, Report, or Work plan Review - other	DEC reviewed the 2022 East Tank Farm Water Quality Monitoring Report, received January 25, 2023. Semi-annual monitoring of groundwater from recovery wells T10-MW1, T14-MW1, T14-MW2, and T14-MW3 and surface water from three locations (two other locations had insufficient water). Groundwater samples were analyzed for diesel range organics (DRO), residual range organics (RRO), gasoline range organics (GRO), benzene, toluene, ethylbenzene, and xylenes (BTEX). All analytical results were below the DEC Table C Groundwater cleanup levels in May and September and have been so since 2002. Surface water samples were analyzed for BTEX and polynuclear aromatic hydrocarbons (PAHs). Results were calculated for total aromatic hydrocarbons (TAH) and total aqueous hydrocarbons (TAqH). The calculated values of TAH and TAqH did not exceed DEC water quality standards although total xylenes were detected at low, estimated concentrations and naphthalene was detected at an estimated concentration in the May samples. DEC has agreed to the RP's request to reduce the frequency of sample events.	Laura Jacobs
5/3/2024	Document, Report, or Work plan Review - other	A multi-year work plan (2024-2027) for annual monitoring of four surface water and four groundwater sample locations was reviewed and approved. The request to change the frequency of monitoring from two sample events per year to one was also approved.	Laura Jacobs
9/6/2024	Document, Report, or Work plan Review - other	The 2023 East Tank Farm Water Quality Monitoring Report was reviewed for biennial sample efforts conducted in June and September of 2023. Semi-annual sampling at four groundwater monitoring wells resulted in analyte concentrations that remain consistent with historical concentrations in both groundwater and surface water samples. Groundwater sample results have met cleanup levels in 11 of 12 sample events since 2017 and surface water results have not exceeded Alaska Water Quality Standards since 2005. DEC agrees with the recommendation to reduce the frequency of sampling of Valdez Marine Terminal East Tank Farm surface and groundwater to be conducted on an annual basis. DEC approves the annual monitoring report as submitted.	Laura Jacobs
1/23/2025	Document, Report, or Work plan Review - other	The 2024 East Tank Farm Water Quality Monitoring Report was reviewed for annual sample efforts conducted in June, 2024. Sampling data show attainment of all ADEC water quality criteria and reflect no new impacts to the environment near or downgrade of the ETF. Groundwater sample results have met cleanup levels in 12 of 13 sample events since 2017 and surface water results have not exceeded Alaska Water Quality Standards since 2005. DEC agrees with the recommendation to continue sampling on an annual basis. DEC approves the annual monitoring report as submitted.	Pax Templeton

Action Date

Action

Description

DEC Staff

7/22/1992

Update or Other Action

Received 1991 Tank Farm Sumps Subsurface Investigation Status Report, which concludes that the lateral extent of contamination near the sump associated with Tank 7 may not have been delineated. Report does not include figures showing where samples were collected. Concentrations up to 9,810 mg/kg residual-range hydrocarbons and 1,100 mg/kg diesel (EPH). GRO and BTEX results were below Method Two migration to groundwater but results should be considered biased low due to holding time exceedance. Report also concludes that soils near sumps for Tank 6,9,10, & 12 did not exceed the July 1991 Method B cleanup levels.

Keather McLoone

3/25/1993

Update or Other Action

Receipt of ETF Tank # 5 and Tank # 7 Subsurface Soil Investigation. Report includes boring logs. Thirteen borings were advanced and one to three soil samples selected from each boring based on staining and/or PID readings. TPH-diesel ranged from ND to 7,800 mg/kg, TPH-gasoline from ND to 2,200 mg/kg, TRPH from ND to 12,000 mg/kg, and benzene from ND to 0.7 mg/kg. Heterotrophic plate counts from six soil samples ranged from 320 to 18,000 CFU/mL. Residual-range hydrocarbons were also calculated by subtracting VPH and EPH.

Keather McLoone

6/28/1993

Cleanup Plan Approved

(Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Staff approved Tank 5 and Tank 7 remediation plan without comments. Bioventing selected as the remedy.

Dave Connor

6/28/1993

Site Characterization Report Approved

(Old R:Base Action Code = SA2R - Phase II SA Review (CS)). Subsurface Investigation, East Tank Farm, Valdez Marine Terminal document reviewed and approved by staff.

Dave Connor

11/15/1993

Document, Report, or Work plan Review - other

ADEC received the Subsurface Investigation ETF VMT submitted by EMCON dated November 1993. Previous investigations involved the excavation of 68 test pits, advancement of 28 soil borings, and the installation of monitoring well 1 (MW-1). The 1993 work involved installing and sampling additional borings to determine extent of contamination, install monitoring wells, and sampling five subdrains to identify potential groundwater impacts. The investigation identified sixteen new releases. All of the cells contained contamination above ADEC cleanup levels except cell 2. Note: cell 4 was not sampled, but is known to contain significant contamination along the north side of Tank 7. Estimated contaminated soil volumes on site include the following: Cell 1 = 3,365 cy; Cell 3 = 140 cy; Cell 5 = 35 cy; Cell 6 = 80 cy; and Cell 7 = 1710 cy. Groundwater conditions in Cell 1, 3, 5, and 7 were the following: GW in Cell 1 contained a sheen; insufficient GW for sampling in Cell 3; 0.04 feet of free product in cell 5; and insufficient GW for sampling and 0.01 feet of floating product in Cell 7.

Former Staff

1/24/1994

Update or Other Action

(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Bioventing design document and installation report reviewed by the department. 3 year goal for bioremediation, Alyeska to perform quarterly shutdown tests.

Scott Rose

5/16/1994

Update or Other Action

Receipt of Workplan - 1994 Soil Bioventing Project East Tank Farm. Workplan includes a table cross referencing Alyeska Spill Response Numbers (SRNs) and project descriptions for the areas intended to be treated by bioventing as well as proposed leaching assessment, groundwater recovery, excavation, and groundwater remediation. In a January 1995 letter, ADEC stated that it didn't approve of the leaching assessment (see 1200.38.005). The 1991 and 1992 subsurface investigations identified the 3 suspected source areas (Tanks 1, 5, 7, 9, 11, and 13) mentioned in the problem statement at the top of this webpage. The 1993 subsurface investigation identified additional suspected source areas at Tanks 2, 3, 10, 12, and 14. Requested the expansion of the system. Quarterly monitoring reports were to be submitted to department. Reports to include respiration rates, degradation rates, soil gas monitoring data, GW quality data, and air flow rates.

Keather McLoone

4/25/1995

Update or Other Action

Receipt of Final - Remedial Action Status Report - 1994 Soil and Groundwater Remediation Project. Report covers bioventing system installations (including soil gas sampling), excavation of oily soils, and groundwater recovery system installations. Report includes vent well boring logs and well details. Also, in Appendix F, a copy of the Status Report, Bioventing Systems Start-up and Testing - Tank 1, Tanks 5/7 Extension, and Tank 13 (dated December 19, 1994) which describes conditions, operational problems, and design deviations from the workplan. Excavation was conducted near Tank 14 removing ~ 80 cubic yards of contaminated soil from "smear" zone. This excavation was limited by the expense of liner replacement and compromising liner integrity for extended periods of time. Excavation was also conducted near Tank 12. No analytical confimration samples collected, only observations and field screening. Water table is present only seasonally (shot rock/soil interval above bedrock not saturated).

Keather McLoone

10/25/1995

Site Added to Database

Crude oil contamination.

Scott Rose

2/1/1996

Update or Other Action

Receipt of Bioventing Status Reports, East Tank Farm, VMT - Annual Shutdown Respiration Test, Tank 5/7 System - System Startup and Quarterly Respiration Tests, Tank 1 and Tank 13.

Keather McLoone

2/1/1996

Update or Other Action

Receipt of Summary of Analytical Results: ETF, Groundwater Monitoring and Recovery Well Report dated December 19, 1995. Samples collected from groundwater wells T3-MW1 and T9-MW1 and recovery wells T10-MW1, T14-MW1, T14-MW2, T14-MW3. Recommends continuation of groundwater monitoring and recovery.

Keather McLoone

12/13/1996

Update or Other Action

Date in Footer of Bioventing Status Reports - East Tank Farm, VMT - Annual Shutdown Respiration Test - Tank 1 and Tank 13. Three shutdown respiration tests are included in this report.

Keather McLoone

5/6/1999

Update or Other Action

Receipt of Site Closure Workplan - ETF, VMT - Tank 5, 7, and 9 Bioventing System. This document provides project background information including subsurface investigations in 91, 92, 93 and 94. Concludes that the reduction in the contaminant concentrations as indicated by reduced biodegradation rates coupled with new cleanup standards justifies termination of bioventing and decommissioning of system upon ADEC approval. Alyeska cover letter accompanying this plan and the status report (all 3 same date received) indicates that the closure plan for the other 2 "sites" pending on the resolution of these closure issues.

Keather McLoone

5/6/1999

Update or Other Action

Receipt of Final Bioventing Status Report - ETF, VMT - Shutdown Respiratin Test - Tank 5, 7, and 9; Tank 1; and Tank 13 systems.

Keather McLoone

5/6/1999

Update or Other Action

Receipt of Summary Report: ETF, 1998 Annual Groundwater Monitoring and Recovery dated December 30, 1998. Not enough water available to collect at T10-MW1. Samples collected at three recovery wells adjacent to Tank 14, T14-MW1, T14-MW2, and T14-MW3. Only DRO in T14-MW1 above Table C. Report recommends that Alyeska pursue ADEC's concurrence with ten times rule. Alyeska's cover letter accompanying the report suggests that this concurrence has been granted, although there is no documentation in administrative file to support that.

Keather McLoone

3/24/2000

Update or Other Action

Receipt of Final 1999 East Tank Farm Bioventing Systems Status Report. Biodegradation rates had been relatively constant in the bioventing areas. EMCON did not observe evidence of active bioremediation or oxygen-deficient soil gas during the 1999 field effort. Alyeska cover letter accompanying the report indicates that repairs were made to damaged piping segments and that additonal repairs and tests will continue until DEC approved the closure submitted in 1999 for Tank 5, 7, 9 system.

Deborah Williams

3/28/2000

Update or Other Action

Reciept of Final Summary Report for 1999 Groundwater Monitoring and Recovery dated January 12, 2000. Between 1992 and 1995, several GW monitoring wells and GW recovery wells were installed in the ETF to assess the petroleum hydrocarbon impacts. A total of five MWs have been installed in the ETF. A total of four GW recovery wells have been installed at the ETF. The recovery pumps were initially installed in the wells in August 1995 and continue to operate seasonally. Results of the GW monitoring activities conducted in 1999 indicate that groundwater has been impacted at levels exceeding the groundwater cleanup levels.

Deborah Williams

6/15/2000

Update or Other Action

ADEC (Frechione) approves the closure of the bioventing treatment system for the ETF Tank 5/7 system (which includes tank 9). However, the contaminated site will remain open and ground and surface water will continue to be monitored to ensure ground and surface water levels are not violated.

Deborah Williams

6/18/2001

Update or Other Action

Receipt of Final Report, East Tank Farm, 2000 Annual Groundwater Monitoring and Recovery. DRO and RRO concentrations in T10-MW1 and RRO in T14-MW1 above Table C levels.

Keather McLoone

7/9/2001

Update or Other Action

Receipt of 3 page letter (covering 3 "sites" in addition to ETF) entitled Contaminated Sites Program Workplan for the 2001 Construction Season, VMT. Groundwater at the East Tank Farm was pumped and treated from 1995 thru 2000, after which water quality samples were collected from the recovery wells. The sampling program was to be continued in 2001 (analysis for BTEX, GRO, DRO. RRO). Surface water samples to be collected for BTEX, DRO, PAH.

Keather McLoone

11/26/2001

Update or Other Action

Receipt of ETF Bioventing System Decommissiong Workplan.

Keather McLoone

4/1/2002

Update or Other Action

Receipt of Final Report, ETF 2001 Semi-Annual Groundwater Monitoring. Includes a table summarizing environmental activities at the the ETF to date. Four groundwater wells and 2 surface water locations sampled. Continued monitoring to include the 4 wells and 7 surface water locations. Concentrations in wells T14-MW2 and T14-MW3 continue the trend observed since 2000 and remain below Table C values. DRO and RRO in wells T10-MW1 and T14-MW1 exceed Table C.

Keather McLoone

5/1/2003

Update or Other Action

Receipt of Baseline Water Quality Monitoring and East Tank Farm Groundwater Monitoring 2003 Work Plan - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document

Keather McLoone

3/4/2004

Update or Other Action

Receipt of 2004 Work Plan Baseline Water Quality and East Tank Farm Ground Water Monitoring - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document.

Keather McLoone

5/23/2005

Update or Other Action

Receipt of 2005 Work Plan Baseline Water Quality Monitoring and East Tank Farm Ground Water Monitoring - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document.

Keather McLoone

6/26/2006

Update or Other Action

Receipt of Final 2006 Work Plan - Baseline Water Quality Monitoring and East Tank Farm Ground Water Monitoring - VMT. See file 1200.38.054 for this document and a database action on this date giving more detail about document.

Keather McLoone

6/6/2007

Update or Other Action

Receipt of VMT Baseline Water Quality Monitoring and East Tank Farm Monitoring 2007 Work Plan. See file 1200.38.054 for this document.

Keather McLoone

12/18/2007

Exposure Tracking Model Ranking

Initial ranking with ETM completed.

Pam Clemens

3/14/2008

Update or Other Action

Following 2001, water quality monitoring activities and results from the ETF had not been reported but are included in the monitoring report that was submitted to ADEC on this date entitled East Tank Farm Summary Report Valdez Marine Terminal. Review of laboratory review checklists (K.McLoone 8/12/08) found no issues in 2007 data (when the requirement for checklists began) that would impact data quality. T10-MW1 and T14-MW3 recovery pumps will be reinstalled, if feasible. A passive recovery system was also suggested as another possibility. A letter was sent by ADEC (Clemens), concurring with continued monitoring. Report also covers bioventing system closure activities which included drilling and sampling to document soil conditions at the time of closure. Seven borings advanced included 2 north of Tank 1, 3 north of Tank 3, and 2 north of Tank 13. Fifteen samples and two duplicates were submitted to the laboratory. Samples associated with each of these 3 Tanks exceeded Method 2 migration to groundwater for DRO and benzene (up to 6,100 and 0.41 mg/kg respectively). Samples associated with Tank 7 also exceeded these criteria for GRO up to 310 mg/kg. Closure also included cutting off vertical system components. The most recent groundwater results are as follows: T10-MW1 (9/25/2002) with DRO and RRO above Table C, T14-MW1 (10/7/2007) with RRO above Table C, T14-MW2 (10/7/2007) no results above Table C. The last sample collected for DRO at T14-MW3 was on 10/20/2006 and its duplicate exceeded Table C. The last sample collected for RRO at T14-MW3 was on 6/5/2006 and exceeded Table C. Sampling was discontinued at T10-MW1 and T14-MW3 due to the observation of oil droplets in these wells.

Keather McLoone

4/4/2008

Meeting or Teleconference Held

During the April 4, 2008 meeting with Jan Shifflett (Alyeska) and Scott Rose (SLR), the report entitled East Tank Farm Summary Report received about a month prior was briefly discussed. The re-installation of recovery pumps in the two wells where crude oil droplets were found was not discussed, as mentioned in Alyeska's cover letter (#15148, dated March 10, 2008) which accompanied the report.

Pam Clemens

6/6/2008

Update or Other Action

Receipt of ETF 2008 Water Quality Monitoring Work Plan VMT. Email received 6/10 from SLR clarifies that it is still intended that recovery pumps be reinstalled although not specifically discussed in workplan. Recovery wells have not been operated since 2000.

Keather McLoone

8/25/2008

Update or Other Action

Confirmed that although recovery pumps have not yet been installed, they are still to be installed once the work is approved thru Alyeska's system.

Keather McLoone

2/13/2009

Update or Other Action

Receipt of East Tank Farm Water Quality Monitoring Report by SLR. Four groundwater well and six surface water locations are part of this monitoring effort. Only two wells were sampled in the spring (early summer) and one well in the fall due to product presence. The fall event was the first time that product has been observed in T14-MW1. No exceedances of regulatory criteria for samples that were collected. Monitoring will continue in 2009. Recovery pumps may be reinstalled and passive recovery or other systems may be evaluated in 2009. Report review included laboratory review checklist. RRO result for T14-MW2 (fall) considered by the laboratory to be estimated based on imprecision of MS/MSD results. Benzene result for T14-MW2 (fall) should be considered estimated due to imprecision of field duplicate results.

Keather McLoone

5/22/2009

Document, Report, or Work plan Review - other

Review of East Tank Farm 2009 Water Monitoring Work Plan. Two groundwater and surface water sampling events will be conducted (spring and fall). Four groundwater recovery wells will be sampled: T14-MW1, T14-MW2, T14MW3, and T10MW1. Recovery pump installation is planned for wells T10-MW1 and T14MW3.

Keather McLoone

5/6/2010

Document, Report, or Work plan Review - other

Review of East Tank Farm Water Quality Monitoring Report (2009). Two groundwater and surface water sampling events were conducted and results were below Table C and water quality criteria, respectively. Recovery pumps were not installed in 2009 as planned, due to scheduling conflicts. These will be installed in 2010.

Keather McLoone

5/24/2010

Document, Report, or Work plan Review - other

Review of 2010 East Tank Farm Water Monitoring Work Plan. Semi-annual groundwater and surface water sampling program. Reinstallation of recovery pumps in 3 (T10-MW-1, T14-MW-1, and T14-MW-3) of the 4 wells is also planned. Six surface water locations are included in this sampling program.

Keather McLoone

2/17/2011

Document, Report, or Work plan Review - other

Review of East Tank Farm 2010 Water Quality Monitoring Report submitted on this date. Review included laboratory data review checklist. Four groundwater well and five surface water locations were visited during a spring and fall events. Only T-14-MW2 was sampled in the spring, the other well/event combinations did not include collection of laboratory sample because of the presence of free-phase hydrocarbons. There were no exceedance of surface water quality criteria. Once again, recovery pumps were not installed as planned.

Keather McLoone

5/23/2011

Document, Report, or Work plan Review - other

Date of receipt of Valdez Marine Terminal 2011 East Tank Farm Water Quality Monitoring Work Plan. Alyeska proposes the same work they proposed last year, including the re-installation of recovery pumps.

Keather McLoone

6/10/2011

Update or Other Action

Email communication on today's date regarding the reason for the repeated delays in getting the recovery pumps reinstalled. Alyeska provided a reasonable explanation and assurance that they are committed to getting the pumps installed this year.

Keather McLoone

7/6/2011

Document, Report, or Work plan Review - other

Date of receipt of Valdez Marine Terminal 2011 IWWS Subsurface Investigation Workplan. The primary objectifve for this project "are to determine if the video anomaly observed in 2010 is still present, to assess the quality of water that migrates under Tank 4 (below the liner within trenches) and discharges to the north, and to assess potential soil contamination in the vicinity of the anomaly (if applicable)." If the anomaly is no longer present, no further assessment will be conducted beyond addint the French drain outlet to the "Baseline" water quality monitoring program.

Keather McLoone

1/23/2012

Document, Report, or Work plan Review - other

Date of receipt of 2011 Water Quality Monitoring Report. Groundwater samples were not collected during either sampling event because of the presence of free product (droplets) in water purged from the four wells. Four surface water samples were collected from 54-SW-4, 54-SW-5, 58-SW-7, 58-SW-8. Due to a lack of water at location 54-SW-4, a sample was collected from 400 feet downgradient (but not directly downgradient - see Figure 2). Location 54-SW-3 was not sampled during both events due to a lack of water. Surface water results were below applicable criteria. Product recovery pumps were installed and operated for a very short period of time before winter storage. The report says they will be redeployed in the spring of 2012.

Keather McLoone

2/14/2012

Document, Report, or Work plan Review - other

Date of receipt of East Tank Farm, Tank 4 IWWS Subsurface Investigation Report. This work did not find water presnt at the french drain CMP outfall so no water was sampled. The video inspection was conducted and the anomaly that was seen in the 2010 video could not be found; therefore, Alyeska does not plan to assess this further at this time.

Keather McLoone

5/4/2012

Document, Report, or Work plan Review - other

Date of receipt of 2012 Water Monitoring Plan. Four groundwater wells will have recovery pumps (re)installed. All 4 of these wells had free-hase hydrocarbons in August 2010. These wells will be checked during the spring and fall of 2012 and if after operation of the recovery pumps, product is not present, they will be sampled. Five surface water locations will be sampled twice during 2012.

Keather McLoone

12/17/2012

Document, Report, or Work plan Review - other

Received the 2012 Water Quality Monitoring Report. Recovery pumps operated in two wells between June and October, 2012, and a total of 11,886 gallons of hydrocarbon-impacted groundwater was recovered and treated in the ballast water treatment plant. The pumps were removed in October for dry winter storage and will be reinstalled in 2013. Of note, pictures and/or field notes show thin, whispy smears of sheen on purge water from four wells (T14-MW1, T14-MW2, T14-MW3, and T10-MW1. Groundwater samples were not collected from these wells. No exceedances were noted in wells that were sampled.

Richard Bernhardt

5/23/2013

Site Characterization Workplan Approved

Received and approved the 2013 work plan to include ground- and surface-water monitoring. Recovery pumps will be reinstalled in four monitoring wells near Tanks 10 and 14 to recover and treat contaminated groundwater.

Richard Bernhardt

2/7/2014

Site Characterization Report Approved

On this date, ADEC received the 2013 Water Quality Monitoring Report East Tank Farm Valdez Marine Terminal dated January 2014. Recovery pumps operated in four wells between June and September, 2013, and a total of 388,752 gallons of hydrocarbon-impacted groundwater was recovered and treated in the ballast water treatment plant. The pumps were removed in September for dry winter storage and will be reinstalled in 2014. Surface water samples were collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain TAH and TaqH concentration about WQS.

Grant Lidren

2/26/2014

Meeting or Teleconference Held

Meeting with SLR and Alyeska on this date. Alyeska indicates piping will be upgraded in next five years. MWs will be relocated as practicable.

Grant Lidren

5/22/2014

Risk Assessment Workplan Approved

On this date, ADEC approved the 2014 East Tank Farm Water Quality Monitoring Work Plan, Valdez Marine Terminal submitted by SLR, dated April 30, 2014.

Grant Lidren

8/5/2014

Update or Other Action

On this date, contamination was discovered at the Tank 6 Catch Basin during basin upgrades. Contamination is assumed historic from failed containment seals allowing oil to seep under liner. PERP is currently managing this spill event with the spill name: VMT East Tank Farm - Tank 6 catch basin, Spill # 14229921701.

Grant Lidren

12/19/2014

Site Characterization Report Approved

On this date, ADEC received the 2014 Water Quality Monitoring Report East Tank Farm Valdez Marine Terminal dated December 2014. Recovery pumps operated in four wells between August and October 2014. A sheen was present during inspection of the groundwater in all four wells. A total of 1,102,421 gallons of hydrocarbon-impacted groundwater was recovered and treated in the ballast water treatment plant. Approximately 0.42 gallons of this was estimated to be hydrocarbons based off one sample collected from three of the wells in October. The pumps were removed in October for dry winter storage and will be reinstalled in 2015. Surface water samples were collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain TAH and TaqH concentration about WQS. No surface water samples were collected from 54-SW-3 due to lack of water.

Grant Lidren

5/19/2015

Site Characterization Workplan Approved

On this date, ADEC approved the 2015 Water Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR dated May 5, 2015.

Grant Lidren

6/24/2015

Site Visit

ADEC visited the site with Alyeska and SLR on this date.

Grant Lidren

6/24/2015

Update or Other Action

On this date, contamination was discovered at the Tank 4 Catch Basin 4-6 during basin upgrades. Contamination is assumed historic from failed containment seals allowing oil to seep under the liner. PPR is currently managing this spill event.

Grant Lidren

7/16/2015

Site Characterization Report Approved

The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2015 Valdez Marine Terminal IWWS Excavation Sampling Work Plan submitted by SLR and dated July 2015. ADEC has no objections to the Work Plan and SLR may proceed.

Grant Lidren

9/9/2015

Update or Other Action

DEC received the Final Cleanup Report – Spills #7674, 7669, 7706, 7704, 7705, and 7738 submitted by Alyeska dated September 9, 2015. This cleanup report documents historic spills encountered during the 2015 IWWS catch basin upgrades in Cell 2 & 7. A total of six areas of contamination were encountered. Three areas of contamination encountered in Cell 2 include: 10 gallons at Catch Basin 54-4-6, 54 cubic yards of contaminated soil was removed; 3 gallons at Man Hole 54-2-4, 29 cubic yards of contaminated soil was removed; and three gallons at Man Hole 54-2-3, 32 cubic yards contaminated soil was removed. Three areas of contamination encountered at Cell 7 include: 20 gallons at Man Hole 54-2-13, 39 cubic yards of contaminated soil was removed; 5 gallons at Catch Basin 54-4-26, 70 cubic yards of contaminated soil was removed; and 7 gallons at Man Hole 54-2-14, 124 cubic yards of contaminated soil removed.

Grant Lidren

3/18/2016

Site Characterization Report Approved

On this date, ADEC received the East Tank Farm Industrial Wastewater System [IWWS] Excavation Soil Sampling Report submitted by SLR dated March 2016. During upgrades to the IWWSs in cell 2 and cell 7, historic contamination was encountered. Excavations were advanced to remove existing catch basins, manholes, and a portion of the IWWS pipping. Approximately 504 cy of suspected contaminated soil was transported to the WTF contaminated stockpile area. Suspected clean fill was stockpile pending analytical samples for reuse. This included a 750 cy stockpile in cell 2 and a 150 cy stockpile in cell 7. Confirmation soil samples from the base of the excavations was limited due to metal retaining walls in the man hole excavations, catch basin 54-CB-4-26 underwater, catch basin 54-CB-4-6 bedrock exposure, and catch basin 54-CB-4-25 metal retaining walls. A total of 34 analytical soil samples were collected. All man holes and catch basin excavations contained contaminant concentrations above cleanup levels (note: catch basin 54-CB-4-26 did not contain contaminant concentrations above cleanup levels but contained a sheen). This included man holes: 54-MH-2-3(cell 2); 54-MH-2-4 (cell 2); 54-MH-2-13 (cell 7); 54-MH-2-14 (cell 7) and catch basins 54-CB-4-6 (cell 2); 54-CB-4-25(cell 7); and 54-CB-4-26 (cell 7). Soil samples were collected near the lower portion of the excavations at a depth of 10 to 15 feet bgs where former catch basin structures connected to the existing IWWS piping. Confirmation soil samples collected from the catch basin and the two man holes from cell 2 contained DRO up to 3,090 mg/kg and benzene up to 0.0606 mg/kg. Confirmation soil samples collected from the two catch basins and the two man holes from cell 7 contained DRO up to 6,640 mg/kg, RRO up to 10,700 mg/kg, and benzene up to 0.104 mg/kg. Soil samples collected from the stockpiles in cell two and cell seven were below cleanup levels. The excavation were capped with the stockpiled soil and clean fill.

Grant Lidren

4/29/2016

Site Characterization Report Approved

On this date, ADEC received the 2015 Water quality Monitoring Report East Tank Farm, Valdez Marine Terminal submitted by SLR dated March 2016. Due to the industrial waste water upgrades, the groundwater recovery wells were not installed in monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1 in 2015. Ground water samples collected from all four monitoring wells contained detectable concentrations of petroleum constituents, but below cleanup levels. However, water bailed prior to sampling contained a hydrocarbon sheen. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain TAH and TaqH concentration about WQS. No surface water samples were collected from 54-SW-3 due to lack of water.

Grant Lidren

5/25/2016

Site Characterization Workplan Approved

The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2016 Water Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated May 2016. ADEC has no objections to the Work Plan and SLR may proceed.

Grant Lidren

7/26/2016

Site Characterization Workplan Approved

The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the East Tank Farm Industrial Wastewater System (IWWS) Excavation Sampling Work Plan Valdez Marine Terminal submitted by SLR and dated July 2016. ADEC has no objections to the Work Plan and SLR may proceed.

Grant Lidren

10/17/2016

Update or Other Action

DEC received the Final Cleanup Report – Spills 8068, 8087, 8099, 8101, 8111, 8114, 8133, 8134, 8151, 8152, and 8154 submitted by Alyeska dated October 17, 2016. This cleanup report documents historic spills encountered during the 2016 IWWS catch basin upgrades in Cell 4 & 6. A total of eleven areas of contamination were encountered. Five areas of contamination encountered in Cell 4 include: 5 gallons at Catch Basin 54-4-15, 73 cubic yards of contaminated soil was removed; 3 gallons at Man Hole 54-2-8, 68 cubic yards of contaminated soil was removed; 5 gallons at Man Hole 54-2-7, 61 cubic yards of contaminated soil was removed; 1/2 gallons at catch basin 54-4-16A, 26 cubic yards of contaminated soil was removed; and 1/4 gallons at Catch Basin 54-4-16, 7 cubic yards contaminated soil was removed. Six areas of contamination encountered at Cell 6 include: 3 gallons at Man Hole 54-2-11, 148 cubic yards of contaminated soil was removed; 10 gallons at Catch Basin 54-4-21, 372 cubic yards of contaminated soil was removed; 2 gallons at Man Hole 54-2-12, 73 cubic yards of contaminated soil was removed; 4 cups at Catch Basin 54-4-23, 10 cubic yards of contaminated soil was removed; 2 cups at Catch Basin 54-4-24A, 10 cubic yards of contaminated soil was removed; and 4 cups at catch basin 54-4-22, 22 cubic yards of contaminated soil removed.

Grant Lidren

2/9/2017

Site Characterization Report Approved

On this date, ADEC received the East Tank Farm Industrial Wastewater System [IWWS] Excavation Soil Sampling Report submitted by SLR dated January 2017. During upgrades to the IWWS, in cell 4 and cell 6, historic contamination was encountered. Excavations were advanced to remove existing catch basins, manholes, and a portion of the IWWS pipping. Contamination, when encountered in the excavations, was observed at the depth of the T-connection between the vertical catch basin and the horizontal IWWS lines. Approximately 880 cy of suspected contaminated soil was transported to the WTF contaminated stockpile area. Suspected clean fill was stockpile in the same tank farm cell it was excavated; this included a 1,599 cy stockpile in cell 4 and a 1,284 cy stockpile in cell 6. Confirmation soil samples from the base of the excavations was limited due to metal retaining walls in the man hole excavations, bedrock exposure, and metal retaining walls. A total of 55 analytical soil samples were collected. All man holes and catch basin excavations confirmation soil samples contained contaminant concentrations above cleanup levels except catchment basin 54-CB-4-13 and manholes 54-MH-2-7 & 54-MH-2-8 all located within Cell #4. Soil samples were collected near the lower portion of the excavations at a depth of 10 to 15 feet bgs where former catch basin structures connected to the existing IWWS piping. Confirmation soil samples collected from the four catch basins and the two man holes from cell 4 contained DRO up to 6,050 mg/kg, benzo(a)anthracene up to 0.768 mg/kg, and benzo(a)pyrene up to 0.329mg/kg. Confirmation soil samples collected from the four catch basins and the two man holes from cell 6 contained DRO up to 9,660 mg/kg, RRO up to 12,000 mg/kg, benzo(a)anthracene up to 0.421 mg/kg, and benzo(a)pyrene up to 0.71mg/kg(note: several other PAHs had elevated LODs or DLs above ADEC cleanup levels). Soil samples collected from the stockpiles in cell 4 and cell 6 were below cleanup levels. The excavation were capped with the stockpiled soil and clean fill.

Grant Lidren

2/15/2017

Site Characterization Report Approved

On this date, ADEC received the 2016 Water Quality Monitoring Report East Tank Farm, Valdez Marine Terminal submitted by SLR dated December 2016. Due to the industrial waste water upgrades, the groundwater recovery wells were not installed in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1 in 2016. Ground water samples were collected June and September from all four monitoring wells. Only MW T10-MW1 contained contaminant concentrations above cleanup levels with DRO up to 10.3 mg/L and RRO up to 7.15 mg/L during the September sampling event. During well purging, sheen and hydrocarbon droplets were encountered in wells T14-MW1 and T10-MW1 during the June sampling event and in all four wells during the September sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.

Grant Lidren

5/18/2017

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the East Tank Farm Industrial Wastewater System (IWWS) Excavation Sampling Work Plan Valdez Marine Terminal submitted by SLR and dated May 2017. Excavations will occur in the last two cells: cell 1 and cell 5. ADEC has no objections to the Work Plan and SLR may proceed.

Grant Lidren

5/24/2017

Site Characterization Workplan Approved

The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2017 Water Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated May 2016. ADEC has no objections to the Work Plan and SLR may proceed pending the following comment: 10% of the worst case groundwater samples need to be analyzed by method 8260 to include petroleum VOCs and PAHs by 8270. This should be for monitoring well T10-MW1 during the fall event.

Grant Lidren

1/10/2018

Site Characterization Report Approved

On this date, ADEC received the East Tank Farm Industrial Wastewater System [IWWS] Excavation Sampling Report submitted by SLR dated December 2017. During upgrades to the IWWS, in cell 1 and cell 5, historic contamination was encountered. Excavations were advanced to remove existing catch basins, manholes, and a portion of the IWWS pipping. Contamination, when encountered in the excavations, was observed at the depth of the T-connection between the vertical catch basin and the horizontal IWWS lines. Approximately 613 cy of suspected contaminated soil was transported to the WTF contaminated stockpile area. Suspected clean fill was stockpile in the same tank farm cell it was excavated; this included a 744 cy and 1,452 cy stockpile in cell 1 and a 3,143 cy and 880 cy stockpile in cell 5. Confirmation soil samples from the base of the excavations was limited due to metal retaining walls in the man hole excavations, bedrock exposure, and metal retaining walls. A total of 54 analytical soil samples were collected. All man holes and catch basin excavations confirmation soil samples contained contaminant concentrations above cleanup levels except catchment basin 54-CB-4-17(cell 5) and manhole 54-MH-2-1 (Cell 1). Cell 1 catchment basin 54-CB-4-1 contained a puddle with sheen and a puddle of black viscous fluid. Cell 1 catchment basin 54-CB-4-3 contained a layer of thin black viscous fluid and a black tar like deposit. Cell 5 Catchment basin 54-CB-4-17 contained groundwater flowing north to south with an observable sheen. Soil samples were collected near the lower portion of the excavations at a depth of 10 to 15 feet bgs where former catch basin structures connected to the existing IWWS piping. Confirmation soil samples collected from the four catch basins and the two man holes from cell 1 contained DRO up to 15,700 mg/kg, RRO up to 26,800 mg/kg, benzo(a)anthracene up to 0.765 mg/kg, and benzo(a)pyrene up to 0.806 mg/kg. Confirmation soil samples collected from the four catch basins and the two man holes from cell 5 contained DRO up to 1,540 mg/kg, benzo(a)anthracene up to 1.94 mg/kg, and benzo(a)pyrene up to 1.67 mg/kg, benzo[b]flouanthene up to 2.08 mg/kg and dibenzo[a,h]anthracene up to 0.237 mg/kg (note: several other PAHs had elevated LODs or DLs above ADEC cleanup levels). Soil samples collected from the stockpiles in cell 1 and cell 5 were below cleanup levels. The excavation were capped with the stockpiled soil and clean fill.

Grant Lidren

3/19/2018

Site Characterization Report Approved

On this date, ADEC received the 2017 East Tank Farm Water Quality Monitoring Report submitted by SLR dated March 2018. Due to the industrial waste water upgrades, the groundwater recovery wells were not installed in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1 in 2017. Ground water samples were collected June and September from all four monitoring wells. Only MW T14-MW3 contained contaminant concentrations above cleanup levels with DRO at 3.54 mg/L and RRO at 3.11 mg/L during the September sampling event. During well purging, sheen and hydrocarbon droplets were encountered in T10-MW1 during the June and September sampling event. Additionally, free phase hydrocarbons were observed in the sample bottles for T19-MW1 during the September sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.

Grant Lidren

6/6/2018

Site Characterization Workplan Approved

The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program (CSP) has received and reviewed the 2018 Water Quality Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated June 2018. ADEC has no objections to the Work Plan and SLR may proceed.

Grant Lidren

4/10/2019

Site Characterization Report Approved

On this date, ADEC received the 2018 East Tank Farm Water Quality Monitoring Report submitted by SLR dated April 2019. Due to the lack of free product, product recovery was not conducted in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1. Ground water samples were collected June and September from these four monitoring wells. Groundwater samples analyzed for GRO, DRO, RRO and BTEX did not contain contaminant concentrations above Table C cleanup levels. During well purging, sheen and hydrocarbon odor were encountered in T10-MW1 during the June and September sampling event. Additionally, free phase hydrocarbons were observed in T14-MW1 during the June sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.

Grant Lidren

5/10/2019

Site Characterization Workplan Approved

On this date, the ADEC received and reviewed the 2019 Water Quality Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated April 2019. ADEC has no objections to the Work Plan and SLR may proceed.

Grant Lidren

8/20/2019

Site Visit

Visited site with Alyeska, SLR, and DNR on this date. Pictures taken.

Grant Lidren

12/20/2019

Site Characterization Report Approved

On this date, ADEC received the 2019 East Tank Farm Water Quality Monitoring Report submitted by SLR dated April 2019. Due to the lack of free product, product recovery was not conducted in the four monitoring wells T14-MW1, T14-MW2, T14-MW3 and T10-MW1. Ground water samples were collected June and September from these four monitoring wells. Groundwater samples analyzed for GRO, DRO, RRO and BTEX. Monitoring well T10-MW1 was also analyzed for PAHs. None of the monitoring wells contained contaminant concentrations above Table C cleanup levels. During well purging, sheen and hydrocarbon odor were encountered in T10-MW1 during the June and September sampling event. Surface water samples collected from 54-SW-4, 54-SW-5, 58-SW-7, and 58-SW-8 did not contain detectable TAH and TaqH concentrations. No surface water samples were collected from 54-SW-3 due to lack of water.

Grant Lidren

5/28/2020

Site Characterization Workplan Approved

ADEC received the 2020-2023 Water Quality Monitoring Work Plan East Tank Farm, Valdez Marine Terminal submitted by SLR and dated May 2020. Groundwater and surface water is approved to be sampled 2020 through 2023.

Grant Lidren

11/3/2022

Document, Report, or Work plan Review - other

The annual monitoring report was reviewed and approved. Four recovery wells were sampled as monitoring wells, and five surface water sample locations were sampled in May and September of 2021. Monitoring well results had contaminant concentrations below the DEC Groundwater clean up levels, except for diesel range organics and residual range organics exceeded cleanup levels in well T14-MW3 in May. There were some quality control issues with surface water samples analyzed for polycyclic aromatic hydrocarbons that were non-detect concentrations for all analytes but poor surrogate recoveries for a few of the analytes resulted in a rejection of the reported non-detect concentrations.

Laura Jacobs

12/5/2023

Document, Report, or Work plan Review - other

DEC reviewed the 2022 East Tank Farm Water Quality Monitoring Report, received January 25, 2023. Semi-annual monitoring of groundwater from recovery wells T10-MW1, T14-MW1, T14-MW2, and T14-MW3 and surface water from three locations (two other locations had insufficient water). Groundwater samples were analyzed for diesel range organics (DRO), residual range organics (RRO), gasoline range organics (GRO), benzene, toluene, ethylbenzene, and xylenes (BTEX). All analytical results were below the DEC Table C Groundwater cleanup levels in May and September and have been so since 2002. Surface water samples were analyzed for BTEX and polynuclear aromatic hydrocarbons (PAHs). Results were calculated for total aromatic hydrocarbons (TAH) and total aqueous hydrocarbons (TAqH). The calculated values of TAH and TAqH did not exceed DEC water quality standards although total xylenes were detected at low, estimated concentrations and naphthalene was detected at an estimated concentration in the May samples. DEC has agreed to the RP's request to reduce the frequency of sample events.

Laura Jacobs

5/3/2024

Document, Report, or Work plan Review - other

A multi-year work plan (2024-2027) for annual monitoring of four surface water and four groundwater sample locations was reviewed and approved. The request to change the frequency of monitoring from two sample events per year to one was also approved.

Laura Jacobs

9/6/2024

Document, Report, or Work plan Review - other

The 2023 East Tank Farm Water Quality Monitoring Report was reviewed for biennial sample efforts conducted in June and September of 2023. Semi-annual sampling at four groundwater monitoring wells resulted in analyte concentrations that remain consistent with historical concentrations in both groundwater and surface water samples. Groundwater sample results have met cleanup levels in 11 of 12 sample events since 2017 and surface water results have not exceeded Alaska Water Quality Standards since 2005. DEC agrees with the recommendation to reduce the frequency of sampling of Valdez Marine Terminal East Tank Farm surface and groundwater to be conducted on an annual basis. DEC approves the annual monitoring report as submitted.

Laura Jacobs

1/23/2025

Document, Report, or Work plan Review - other

The 2024 East Tank Farm Water Quality Monitoring Report was reviewed for annual sample efforts conducted in June, 2024. Sampling data show attainment of all ADEC water quality criteria and reflect no new impacts to the environment near or downgrade of the ETF. Groundwater sample results have met cleanup levels in 12 of 13 sample events since 2017 and surface water results have not exceeded Alaska Water Quality Standards since 2005. DEC agrees with the recommendation to continue sampling on an annual basis. DEC approves the annual monitoring report as submitted.

Pax Templeton

Contaminant Information

Name

Level Description

Media

Comments

Control Type

Type

Details

Requirements

Description

Details

2024 Water Quality Monitoring Report

2021 Water Quality Monitoring Report

2020 Water Quality Monitoring Report

2022 Water Quality Monitoring Report

2023 Water Quality Monitoring Report

2019 Monitoring Report

No associated sites were found.

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Site Report: Alyeska VMT East Tank Farm Biovent/ETF Summary

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

2024 Water Quality Monitoring Report

2021 Water Quality Monitoring Report

2020 Water Quality Monitoring Report

2022 Water Quality Monitoring Report

2023 Water Quality Monitoring Report

2019 Monitoring Report

Missing Location Data

State of Alaska Department of Environmental Conservation