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Site Report: Adak SA 79 Main Road Pipeline


Site Name: Adak SA 79 Main Road Pipeline
Address: OU A, Adak Naval Air Facility, Adak, AK 99546
File Number: 2501.38.003.01
Hazard ID: 2236
Status: Active
Staff: Darren Mulkey, darren.mulkey@alaska.gov
Latitude: 51.871633
Longitude: -176.640181
Horizontal Datum:NAD83

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.

Problems/Comments

Site is actually two locations located at the northern and southern ends of the Main Road pipeline where elevated levels of petroleum contamination were found. The Main Road Pipeline provided JP-5 to multiple buildings and facilities, including refueling stations, housing heating tanks, and Steam Plant 4. Site was retained during the screening process due to elevated DRO concentrations at the southern end of the pipeline. Limited groundwater monitoring selected under SAERA in OU A ROD. Site removed from OU A ROD by OU A ROD Amendment for regulation under 18 AAC 75. Groundwater monitoring through 2002 showed that concentrations were significantly higher at the southern end of the pipeline, and in 2003 the site was moved to the monitored natural attenuation program. The 2005 monitoring round shows a continued presence of high concentrations of DRO in the groundwater two to three times the groundwater clean-up level. Due to the continued high concentrations, the Navy has proposed to include a sweep of the shoreline near the south end SA 79 to ensure that no seeps are appearing along the shore. The Department has stated that it will ask for a remedy re-evaluation if concentrations remain at their current level or increase. Additional sampling did not indicate that remedy reevaluation was required.

Action Information

Action Date Action Description DEC Staff
1/1/1994 Update or Other Action Site included in 1994 two-party SAERA agreement between state and Navy. Christina Goff
10/14/1994 Site Added to Database TPH suspected. No Longer Assigned
2/23/1996 Site Ranked Using the AHRM Site ranked. Score = 41. Scott Pexton
3/14/1997 Update or Other Action (Old R:Base Action Code = RI - Remedial Investigation). RI action added by Shannon and Wilson on 3/14/97, based on Relative Risk Evaluation Worksheet dated 5/25/95. RI is current phase listed on worksheet. Pathways: groundwater. Receptors: Human - downtown area, free product on groundwater, moving toward airport ditch. S&W-Miner
5/1/1999 Proposed Plan Site to be included in ROD for OU-A. Christina Goff
9/1/1999 Update or Other Action Site addressed in ROD for OU-A. Recommendation for institutional controls and monitored natural attenuation. Kevin Oates
4/15/2000 Record of Decision The Record of Decision for this site was signed this date. Elim Yoon
3/1/2003 Update or Other Action The Final 2001 Annual Groundwater Monitoring Report was received. Navy recommends continued monitoring of natural attenuation. Meghan Dooley
10/11/2003 Record of Decision Site removed from OU A ROD by OU A ROD Amendment; Amendment selected LGM as RA. Sami Goldman
3/17/2004 Institutional Control Record Established Interim conveyance document contains an equitable servitude that restricts the domestic use of groundwater. Site is also located in the downtown excavation notification zone. Jason Weigle
6/17/2004 Update or Other Action Comments for the 2003 Annual Groundwater Monitoring report were sent. ADEC supports the Navy's recommendation to conduct a visual inspection of the shoreline area near well 02-230 for seeps and sheens. Other concerns are that the field team may not be familiar with the requirements in the CMP and SOP and changes in ARARs. Meghan Dooley
9/7/2004 Update or Other Action The Final 2003 Annual Groundwater Monitoring Report was received. GRO and BTEX concentrations have been below endpoint criteria for 2 consecutive sampling years at wells MRP-MW8 and 02-230, and DRO exceeded endpoint criteria at both wells. Navy recommends discontinuing GRO and BTEX monitoring, but continuing DRO for these two wells. Navy also recommends continued monitoring of total and dissolved leads at well MRP-MW15. Meghan Dooley
10/19/2004 GIS Position Updated Latitude and Longitude was derived using ArcGIS with either High Resolution Aerial Photography from the Navy with an up to 3 meters error, or line maps used in investigations combined with road layers, +/-25 feet accuracy.  Metadata is as follows: Updated NAD 1983 State Plane Alaska 10 FIPS 5010 Feet; Projection: Lambert Conformal Conic; False Easting: 3280833.333333; False Northing: 0.000000; Central Meridian: -176.000000; Standard Parallel 1: 51.833333; Standard Parallel 2: 53.833333; Latitude of Origin: 51.000000; GCS North American 1983. Jason Weigle
2/17/2005 Update or Other Action 2004 Annual Monitoring report received. Jason Weigle
3/4/2005 Update or Other Action Review of Draft 2004 Annual Monitoring report completed. Jason Weigle
3/7/2005 Update or Other Action Added MRTS data, derived from ADNR and USGS range, township, and section data overlaid on lat/lon coordinates derived previously. Accuracy is equivalent to the lat/lon coordinates. MRTS information depicts the center point of range fans and target areas; actual target areas or fans may overlap several sections. Jason Weigle
3/20/2006 Update or Other Action The draft annual groundwater monitoring report for 2005 was received on this date. Jason Weigle
4/5/2006 Update or Other Action File number 2501.38.003.01 assigned on this date. Jason Weigle
4/7/2006 Update or Other Action Comments on the 2005 groundwater monitoring report submitted to the Navy. The 2005 monitoring round shows a continued presence of high concentrations of DRO in the groundwater two to three times the groundwater clean-up level. Due to the continued high concentrations, the Navy has proposed to include a sweep of the shoreline near the south end SA 79 to ensure that no seeps are appearing along the shore. The Department has stated that it will ask for a remedy re-evaluation if concentrations remain at their current level or increase. Jason Weigle
2/15/2007 Update or Other Action Received Draft Annual Ground Water Monitoring Report, which presents the results of September 2006 ground water monitoring activities at 24 sites at the Former Adak Naval Complex. Guy Warren
4/25/2007 Update or Other Action Submitted comments on the Draft Annual Ground Water Monitoring Report. Primary areas of concern include: increasing trends in contaminant levels at several sites, Increased free product, and adherence to field sampling procedures. In general it appears that declining ground water levels are responsible for the increase in free product and dissolved contaminant concentrations. The Navy and DEC have agreed to reinstate free product recovery at those sites showing increases in free product. Guy Warren
7/26/2007 Update or Other Action Received Final Annual Ground Water Monitoring Report, September 2006. The Department's comments have been addressed in the Final Report. The Navy has agreed to conduct additional free product recovery at those sites with increassed free rpoduct. The Navy has agreed to evaluate conditions at several sites (Including SA79) with increasing contaminant trends to determine if additional investigation or remediaiton is required. Guy Warren
12/21/2007 Update or Other Action Received Draft Petroleum Summary Report for sites Antenna Field, SA79, Former Power Plant, SWMU 60, and SWMU 61 at the former Adak Naval Complex. The report summarizes the investigation activities that have been conducted at these sites to date in addition to 2007 monitoring results. During 2007 the Navy collected a ground water sample from between the point of compliance well and Sweeper Cove using a drive point. Labortory results form this sample did indicated that ground water would not impact adjacent surface water quality. The report recommends continued monitoring of the drive point location and additional monitoring at select site wells. Guy Warren
1/9/2008 Update or Other Action Submitted comments on the Draft Petroleum Summary Report (PSR) to the Navy. The Department concurred with the recommended changes to the Annual Monitoring Program for this site. Guy Warren
1/9/2008 Update or Other Action Site Status changed on this date from "Conditional Closure" to "active". Due to recent changes in guidance, sites where long term monitoring is ongoing are not eligible for "Conditional Closure". Guy Warren
3/28/2008 Update or Other Action The comments for the draft 2007 Annual Groundwater Monitoring Report were sent. Concerns include: consistency of groundwater depth and flow measurements between sites, reporting of free product recovery methods and results, inclusion of the Petroleum Summary Report in recommendations for applicable sites in this report, tracking changes to the CMP, and extending surface water and sediment monitoring to appropriate sites. ADEC recommends that a finite location be selected for the NL-04 sample and a consistent location be used every year because of tidal influence. Meghan Dooley
7/1/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Jill Taylor
8/14/2008 Update or Other Action The Final 2007 Annual Groundwater Monitoring Report was received. The Navy recommendations are as follows: Adding well E-403 and Temporary Well NL-01 for DRO monitoring, and conducting DRO, TAH, and TAqH sampling at wells 02-230 and MRP-MW8 as well as shoreline inspections downgradient of well 02-230. Meghan Dooley
5/20/2009 Update or Other Action The comments for the draft 2008 Annual Groundwater Monitoring Report were sent. General concerns include: adequacy of the MNA remedy and increasing contaminant levels, implementation of recommendations from the Petroleum Summary Report, effects of the March 2008 earthquake and documentation in the report, the monitoring well network, and the inclusion of useful photos. Meghan Dooley
8/21/2009 Update or Other Action The Final 2008 Annual Groundwater Monitoring Report was received on this date. The Navy recommends discontinuing monitoring at NL-01 because of tidal influences, and continuing monitoring at E-403 for one more year, and if DRO concentrations remain under endpoint criteria, that monitoring be discontinued in 2010. Meghan Dooley
3/12/2010 Update or Other Action The draft 2009 Annual Groundwater Monitoring Report was received on this date. The Navy recommends discontinuing monitoring at well E-403 and for TAH and TAqH at all locations in the site. Meghan Dooley
4/15/2010 Update or Other Action Comments for the draft 2009 Annual Groundwater Monitoring Report were sent on this date. ADEC concurs with the recommendations for this site. Meghan Dooley
5/27/2010 Update or Other Action The Draft SAP Additional Petroleum Characterization and figures were received Meghan Dooley
2/14/2011 Report or Workplan Review - Other The draft Site Characterization Report was received on December 30, 2010 and ADEC sent comments on February 14, 2011. The purpose of the additional characterization was to determine if DRO was migrating in groundwater to the adjacent surface water (Sweeper Cove) at concentrations greater than surface water criteria. Soil borings were completed and 2 wells were installed and the report concluded that groundwater was not migrating to surface water with concentrations of DRO, TAqH, and TAH above cleanup levels. No recommendations were offered. Meghan Dooley
2/16/2011 Report or Workplan Review - Other The draft 2010 IC Site Inspection Report was received on January 11, 2011 and DEC sent comments on February 16, 2011. There were no observed problems with ICs at this site. Meghan Dooley
5/10/2011 Site Characterization Report Approved The final Site Characterization Report was received. No action in addition to the current remedy was recommended for the site. Meghan Dooley
5/12/2011 Report or Workplan Review - Other The Final 2010 IC Site Inspection Report was received by ADEC. ICs appear to be functioning as intended at this site. Meghan Dooley
5/12/2011 Report or Workplan Review - Other The Final 2010 IC Site Inspection Report was received by ADEC. ICs appear to be functioning as intended at this site. Meghan Dooley
6/27/2011 CERCLA ROD Periodic Review The draft Third 5-Year Review was received. The purpose of the 5-Year Review is to evaluate the effectiveness of the remedy and determine if further action is warranted to protect human health and the environment. The document listed actions taken to address issues from the previous 5-Year Review, and offered new recommendations based on data collected from 2006 to 2010 from Operable Units A and B-1. It concluded that the remedy is functioning as intended at all but 4 sites and provided the following area-wide recommendations: 1. Update the current Comprehensive Monitoring Plan, Institutional Control Monitoring Plan, Operation and maintenance Plan, 2. Update the document repositories, 3. Assess and update as necessary the Community Relations Plan, and 4. Address action items identified during 2010 site inspections. The 5-Year Review recommends that groundwater monitoring at SA 79 continue as prescribed. Meghan Dooley
7/11/2011 Report or Workplan Review - Other The Final 2010 Annual Groundwater Monitoring Report was received. Additional site characterization was completed in 2010 that involved installation of new wells. The report recommends adding the new wells (601 and 602) to the annual monitoring event and sampling for DRO. Meghan Dooley
10/16/2012 Report or Workplan Review - Other Submit acceptance letter to Navy regarding Final 2011 Annual Ground Water Monitoring. Final report included recomendation to discontinue monitoring at site well 602. Guy Warren
4/5/2013 Report or Workplan Review - Other ADEC sent comments on the draft 2012 Annual Groundwater Monitoring Report. ADEC concurs with recommendations to reduce monitoring at the site to odd years. Meghan Dooley
6/4/2013 Institutional Control Periodic Reporting The Final 2012 Institutional Control Site Inspection Report was received. There were no observed changes to land use and no indications of groundwater use or excavation activities. Signs were present. ICs appear to be functioning as intended. Meghan Dooley
9/8/2014 Report or Workplan Review - Other Received, Final 2013 Annual Groundwater and Landfill Monitoring Report for Adak Alaska. DRO remains above endpoint criteria in site wells. Monitoring will continue as prescribed. Guy Warren
9/10/2014 Institutional Control Periodic Reporting The Final 2013 Institutional Control Site Inspection Report was received. There were no observed changes to land use and no indications of groundwater use or excavation activities. Signs were present. ICs appear to be functioning as intended. IC inspection frequency has been reduced to every odd year. Guy Warren
7/16/2017 Site Visit ADEC completed a three day site visit to Adak NAVFAC. All active sites were visited and current status discussed at length with NAVFAC representatives. Current field work activities were observed and noted. Work plan activities were proceeding as scheduled. No work plan deviations were evident. Darren Mulkey

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
DRO > Table C Groundwater
Lead - Total > Table C Groundwater

Control Type

Type Details
Equitable Servitude The Equitable Servitude to the Interim Conveyance Document restricts groundwater use.
Institutional Control Management Plan The Institutional Control Management Plan, a supbart of the base-wide Comprehensive Monitoring Plan, requires the completion of a dig notification in the Downtown Area and at several outback locations.

Requirements

Description Details
Excavation / Soil Movement Restrictions All excavation within the 'downtown area' of Adak, as defined in the Equitable Servitude to the Interim Conveyance Document, must be submitted to the City of Adak and the Navy for review three days prior to excavation. Annual report of excavation notifications included in the IC Inspection Report.
Groundwater Use Restrictions The Equitable Servitude restricts groundwater use in the Downtown Area. Site is inspected and reported yearly to ensure groundwater is not being used in the Downtown Area.
Groundwater Monitoring The Comprehensive Monitoring Plan Rev. 2 requires annual groundwater monitoring for this site. Groundwater is sampled yearly for various parameters.

There are no documents for this site report.

Missing Location Data

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