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Site Report: ADOT&PF Tudor Road Maintenance Facility


Site Name: ADOT&PF Tudor Road Maintenance Facility
Address: 5848 East Tudor Road, Anchorage, AK 99508
File Number: 2100.38.415
Hazard ID: 926
Status: Active
Staff: Chelsy Passmore, 9072697522 chelsy.passmore@alaska.gov
Latitude: 61.178881
Longitude: -149.775088
Horizontal Datum:

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

Numerous contaminant source areas are located at the ADOT&PF Tudor Road Maintenance Facility including a former disposal pit at the Materials Lab that resulted in solvent contamination in soil and groundwater, a floor hoist at Building 4801 that released hydraulic fluid to the subsurface, and buried drums and containers of paint and other chemicals in the SE corner of the facility, most of which have been removed. Groundwater contamination infiltrated the storm water system at the facility resulting in petroleum and/or solvent contamination in surface water and sediment at a storm water pond near the northeast corner of the facility. Prior to the construction of the sand storage building, salt had migrated from the facility into the surrounding wetland resulting in dead vegetation and salt deposition in offsite areas. Included in this site are leaking underground storage tank Event IDs 301, 1701, 1691, and 1692.

Action Information

Action Date Action Description DEC Staff
5/31/1990 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). Site inspection revealed observations of evidence of petroleum and heavy oil spills adjacent to the storm drain settling pond. Scott Bailey
7/5/1990 Site Added to Database Paints and chlorinated solvents have been discharged into the stormwater system that flows into the pond. No Longer Assigned
11/28/1990 Notice of Violation Letter requesting corrective action for the hydraulic fluid release at building 4801sent to Charles R. Cosper. Need to have workplans submitted identification of vertical/lateral level extent of surface/subsurface contamination, cleanup area soil/groundwater contaminated from site activities, and disposal of contaminated soils. All workplans to be accompanied with a quality assurance/control plan. No Longer Assigned
12/13/1990 Update or Other Action Hydraulic fluid release at building 4801 listed in database. No Longer Assigned
11/5/1991 Update or Other Action Release of solvents, lubricants, pressure cans of various materials as a result of a fire at building 4801. No Longer Assigned
12/10/1991 Update or Other Action An estimated five drums of paints and thinners have been reported buried in the southeast corner of the site which require investigation. No Longer Assigned
3/19/1992 Update or Other Action (Old R:Base Action Code = CORR - Correspondence (General)). Followup with current DOT environmental staff after DOTPF Coordinator left. Current Environmental Analyst is updating DOTPF management on cleanup plan for the drum site. Funding is needed. No Longer Assigned
6/16/1995 Site Ranked Using the AHRM Initial ranking. Action code added because it wasn't when the site was originally ranked. No Longer Assigned
6/27/1996 Site Ranked Using the AHRM Site reranked because it was on Top 30 List. Air Exposure Index Value changed from 1 to 0.1. New score = 111. Eileen Olson
2/11/1998 Update or Other Action UST program issued a letter to ADOT with comments regarding the removal of 5 USTs and notifying them that CS program will be overseeing the site activities. David Pikul
4/22/1998 Update or Other Action Memorandum from ADEC to ADOT - Requesting to schedule a meeting to discuss the issues associated with this project. David Pikul
5/13/1998 Meeting or Teleconference Held Meeting between ADEC and ADOT to get site update from ADOT. David Pikul
6/4/1998 Meeting or Teleconference Held Meeting between CS and UST programs. CS will assume the UST removal cleanups. David Pikul
7/28/1998 Update or Other Action RFP out to Hart Crowser. David Pikul
7/31/1998 Meeting or Teleconference Held Preproposal meeting with Hart Crowser. David Pikul
8/17/1998 Update or Other Action ADEC accepted Hart Crowser cost proposal to the 7-28-98 RFP. David Pikul
8/27/1998 Meeting or Teleconference Held Meeting with Hart Crowser, discussed the issues in their draft and agreed for them to final the work plan. David Pikul
8/31/1998 Update or Other Action Funding approval requested. David Pikul
9/2/1998 Update or Other Action NTP signed, scoping meeting with Hart Crowser and site visit conducted. David Pikul
9/10/1998 Update or Other Action Site work began. David Pikul
9/22/1998 Update or Other Action Memorandum from ADEC to ADOT: During a site visit on September 2, 1998, DOTPF personnel were seen draining waste cleaning water from the truck used to clean the roadside storm water collection basins directly into the yard catch basins at the Tudor Road facility. Memorandum requested ADOT cease such discharge activities and requested closure of the final floor drain from the storm drain system. David Pikul
9/25/1998 Update or Other Action Site visit to position new monitoring wells. Memorandum sent to ADOT regarding proper storage of stockpiled contaminated soils from the removal of five USTs. David Pikul
11/16/1998 Meeting or Teleconference Held Meeting with Hart Crowser to discuss data. David Pikul
12/14/1998 Update or Other Action ADEC approval for Task I and II for hydrocarbon recovery study, additional monitoring well installation and monitoring well abandonment. David Pikul
12/16/1998 Update or Other Action Funding approved for the next phase of work. David Pikul
12/18/1998 Update or Other Action NTP signed for hydrocarbon recovery/additional monitoring well sampling and monitoring well abandonment. David Pikul
12/23/1998 Update or Other Action ADEC issued approval to transport soils generated during the 1997 monitoring well installation at building 4801 and sump sediments to ASR. David Pikul
5/3/1999 Update or Other Action Site visit conducted. David Pikul
5/24/1999 Update or Other Action Funding approved for tasks include: stockpile removal; ORC injection/groundwater sampling; installation of monitoring well and sampling; and continuation of product recovery pilot study. David Pikul
5/25/1999 Update or Other Action NTP signed for additional site assessment activities.' David Pikul
6/3/1999 Update or Other Action Site visit to position a nested well at the former Materials Testing Lab Disposal Pit. David Pikul
6/7/1999 Site Characterization Workplan Approved Work plan ADOT&PF Tudor Road Maintenance Facility Anchorage, Alaska, June 2, 1999 - approved. David Pikul
6/9/1999 Update or Other Action ADEC issued approval for transport and disposal of sump and floor drain sediments. David Pikul
10/8/1999 Update or Other Action Site visit found several monitoring wells to be paved over by ADOT including two which have product recovery instruments in them. David Pikul
10/15/1999 Update or Other Action Site visit - attempt to locate several monitoring wells that have been covered over with asphalt chips by ADOT. David Pikul
11/22/1999 Meeting or Teleconference Held Preproposal meeting with Hart Crowser. David Pikul
11/29/1999 Update or Other Action RFP out for additional FY 2000 work. David Pikul
11/29/1999 Site Number Identifier Changed Site information from three other sites at the Tudor Road Facility (Reckeys) consolidated into this Reckey. David Pikul
1/11/2000 Meeting or Teleconference Held ADEC scoping meeting with Hart Crowser. David Pikul
2/9/2000 Update or Other Action RFP issued to Hart Crowser for additional work. David Pikul
3/9/2000 Meeting or Teleconference Held Meeting this day with contractor regarding ADEC's expectations for this years fieldwork. David Pikul
3/13/2000 Meeting or Teleconference Held ADEC scoping meeting with Hart Crowser. David Pikul
4/12/2000 Update or Other Action ADEC issued a letter to Hart Crowser requesting amendment to their proposal to include Tasks V and VI. David Pikul
4/19/2000 Update or Other Action Funding approval granted for: Well assessment Free-phase hydrocarbon recovery - Building 4801 ORC evaluation Stockpile removal data submittal Stormwater detention pond Wells and sampling at Building 5750 Mechanical excavation of buried drums Testing for geochemistry parameters in in GW Reporting David Pikul
4/20/2000 Update or Other Action NTP signed, funding approved for this years fieldwork. David Pikul
4/24/2000 Update or Other Action ADOT notified ADEC that they would be starting to disconnect the floor drain in building 5820 from the stormwater system. David Pikul
4/26/2000 Update or Other Action First of four rounds of groundwater elevation measurements collected. David Pikul
5/2/2000 Update or Other Action Staff conducted a site visit and on-site meet to determine the locations for additional monitoring wells to be installed in June 2000. David Pikul
5/11/2000 Meeting or Teleconference Held Meeting at the site between ADEC, ADOT, and Hart Crowser to determine the location to start investigating the buried drum area. David Pikul
5/11/2000 Update or Other Action Staff conducted a site visit and on-site meeting with consultant and ADOT personnel. David Pikul
5/16/2000 Update or Other Action 13 new monitoring wells installed at the site. David Pikul
5/18/2000 Site Characterization Workplan Approved ADEC approved workplans for further investigation at buildings 5750, 4801, 5280 and the on-site settling pond. David Pikul
5/30/2000 Update or Other Action NTP signed. David Pikul
5/31/2000 Update or Other Action First of two rounds of groundwater and surface water samples collected beginning today over the next three days. David Pikul
6/1/2000 Update or Other Action The second round of groundwater elevation measurements and the first of two rounds of groundwater and surface water samples collected from all site wells. David Pikul
6/14/2000 Interim Removal Action Approved ADEC approved the work plan to investigate the buried drum area. David Pikul
6/19/2000 Update or Other Action Investigation of buried drum area begins and proceeds for 5 days. 60 drums recovered. David Pikul
6/22/2000 Update or Other Action ADEC issued approval to transport and dispose of sump sediments from building 4801. David Pikul
6/26/2000 Update or Other Action HazCat and consolidation of drum contents. David Pikul
7/7/2000 Update or Other Action ADEC requested Hart Crowser submit proposal to replace well monuments destroyed by ADOT personnel. David Pikul
8/2/2000 Update or Other Action Site visit conducted to inspect drum site excavation status. Moose keep breaking caution tape and walking through the drum excavation area. With the rain and wind the poly blew off part of the overpack staging area. Also, the cover on the excavation as a considerable amount of rain accumulation that will require a pump to remove it. Site was resecured. David Pikul
8/15/2000 Update or Other Action Third round of groundwater elevation measurements collected. David Pikul
9/26/2000 Update or Other Action Fourth round of groundwater elevation measurements and second round of groundwater and surface water samples collected. David Pikul
10/4/2000 Meeting or Teleconference Held Meeting with Shannon and Wilson regarding drum disposal. David Pikul
10/17/2000 Update or Other Action NTP singed with Shannon and Wilson for disposal of buried drums removed and completion of excavation and stockpile activities. David Pikul
11/1/2000 Update or Other Action Staged drums were transported from the site by Phillips Services for disposal at Burlington Environmental Inc. in Seattle, WA. David Pikul
11/3/2000 Interim Removal Action Approved ADEC approved the workplan to complete the removal of impacted soils from the drum excavation. David Pikul
1/25/2001 Meeting or Teleconference Held ADEC had a meeting with HartCrowser to discuss changes to the site characterization report and outstanding budget issues. David Pikul
5/18/2001 Meeting or Teleconference Held On-site meeting to position new wells in the former buried drum area. David Pikul
5/22/2001 Site Characterization Workplan Approved ADEC approved "Work plan for additional soil and groundwater assessment spring 2001 dated May 18, 2001. David Pikul
6/16/2001 Update or Other Action ADEC issued and NTP 1820121323A to Hart Crowser for additional soil and groundwater assessment. David Pikul
6/22/2001 Update or Other Action NTP amended - 1820121323B - end date extention. David Pikul
6/29/2001 Update or Other Action ADEC received the draft report for the additional site assessment. David Pikul
8/2/2001 Update or Other Action ADEC approval to transport and dispose of eighteen 85-gallon over pack drums containing sump sediments generated during the cleaning of a sump at the light duty maintenance building David Pikul
8/6/2001 Meeting or Teleconference Held Meeting with contractor to discuss upcoming site work. David Pikul
10/4/2001 Meeting or Teleconference Held On-site meeting with contractor to site new wells. David Pikul
11/28/2001 Meeting or Teleconference Held Meeting with contractor to review site data. David Pikul
12/20/2001 Meeting or Teleconference Held Meeting with contractor to go over storm water/ sewer hookup options. David Pikul
1/16/2002 Update or Other Action ADEC approval to transport and dispose of 6, 55 gallon drums of purge water containing dissolved petroleum. David Pikul
1/17/2002 Update or Other Action ADEC completed review of the additional environmental assessment report (12/01) and held a meeting with the contractor to discuss the results. David Pikul
1/23/2002 Update or Other Action Funding increase: proposed disposal of two drums of PH IDW soil, actual number of drums requiring disposal at ASR will be nineteen. Approved increase to the existing NTP of $2,900.00. David Pikul
12/8/2003 Update or Other Action Approve for final "Continuing Environmental Assessment Spring 2003 ADOT&PF Tudor Road Maintenance Facility" September 2003. David Pikul
6/29/2004 Update or Other Action DEC has completed review of the report titled: Draft Fall 2003 Groundwater Monitoring ADOT&PF Tudor Road Maintenance Facility, Anchorage, Alaska dated May 2004 and approves the report for final. David Pikul
6/29/2004 Update or Other Action DEC completed review of the report titled: Groundwater Modeling ADOT&PF Tudor Road Maintenance Facility, Anchorage, Alaska dated June 2004 and approves the report for final subject to DEC comments conveyed to HartCrowser during a meeting this day. David Pikul
6/30/2004 Update or Other Action File number changed from CS65.08 to 2100.38.415 Sarah Cunningham
9/10/2004 Update or Other Action Staff conducted a site visit to find bollards on MW-18 destroyed and MW-21 bollards and well destroyed. MW-21 stand been hit, cover broken off, a 5-foot section of 2" well broken and loose in the stand. David Pikul
1/18/2006 Site Characterization Report Approved Staff completed review of the Fall 2005 Groundwater Monitoring report, attended a brief meeting with the CS term contractor to discuss comments and approved the report for finalization. In summary: Work performed during fall 2005 included update of the site-wide groundwater assessment and stormwater detention pond. Water samples were collected from twenty-one selected site groundwater monitoring wells. Groundwater samples were laboratory analyzed and field measurements for intrinsic remediation parameters were recorded. Water samples were also collected form the inflow and outfall of the stormwater detention pond for laboratory analysis. Review of the data indicates that groundwater conditions for the Building 4801 release area are generally consistent with previous monitoring events or contaminant concentrations are decreasing. Geochemical results indicate that biodegradation may be occurring. Data from groundwater collected for the Building 5820 release area indicate a general stable or decreasing trend. Geochemical results indicate that biodegradation is likely occurring. Data from groundwater collected for the Building 5750 release area indicate a general stable or decreasing trend. Geochemical results indicate that biodegradation may be occurring. Data from surface water collected from the stormwater detention pond indicate that water quality standards are not being exceeded at the outfall, however, water quality standards were exceeded in water flowing into the pond. Historical data for the pond sampling does not indicate a consistent trend for evaluation. David Pikul
4/23/2007 Update or Other Action PM Changed from Pikul to O'Connell Bill O'Connell
4/23/2007 Update or Other Action Received Groundwater and Surface Water sampling and MW decommissioning work plan. 31 wells are proposed for decommissioning. The final number of wells and their names will be reported after receiving the final report. 24 wells are to be sampled, with the results determining if the well is appropriate for decommissioning. Inflow and outflow surface water samples will be collected from the storm water detention pond and wells in need of repair will be repaired. Bill O'Connell
4/24/2007 Update or Other Action Site visit conducted this day. ADEC staff met with Hart Crowser and walked the site. Bill O'Connell
7/3/2007 Site Characterization Report Approved Received 2007Groundwater Monitoring report. QA/QC conducted. 28 monitoring wells that are no longer needed for monitoring purposes were decommissioned. Free product was measured in well RW-1 (0.87') and MW-4 (0.23'). At Building 4801, benzene was detected up to 86.6 mg/l and GRO up to 556 mg/l, both in MW-16. DRO and TEX also exceed Table C in several wells. At Building 5821, historically contaminated wells could not be sampled due to ice. Other wells did not contain contaminants above Table C cleanup levels. At Building 5750, TCE, TCA, and DCE were detected above Table C cleanup levels, however concentrations show a decreasing trend over time. Inlet and outlet samples from the stormwater detention pond did not contain contaminants above AWQS. Bill O'Connell
11/13/2007 Update or Other Action Actions and information recorded on this database are also applicable to four LUST Event IDs: 301,1701, 1691 and 1692 Bill O'Connell
2/27/2008 Meeting or Teleconference Held Meeting today with Jack Fullerton with ADOT to discuss future work at Tudor Road. Topics discussed included storm sewer sampling, evaluation of stormwater retention pond, free product recovery and salt/sand management. Bill O'Connell
3/4/2008 GIS Position Updated Position updated with Google Maps Grant Lidren
6/26/2008 Site Characterization Report Approved Received report for Additional Site Assessment. Water samples were collected from the storm water system, storm water detention pond, and from chloride impacted areas near the sand pile. Free product was gauged in select wells. Water samples collected from storm drains contained low concentrations of benzene, toluene, xylenes and 1,2,4-trimethylbenzene. Chlorinated compounds were not detected as in previous samples. Water samples collected from the storm water detention pond contained xylenes and benzo-a-pyrene, but not at concentrations exceeding AWQS. Sediment samples from the pond contained DRO up to 4,390 mg/kg and various PAHs. Sheen was produced when the sediment was disturbed and the surface of the water was covered with an "oily scum". Chloride samples found Chloride up to 24,800 mg/kg in soil and 22 mg/l in surface water. Product gauging found product in two wells, RW-1 at 0.11 feet thick and MW-4 at 0.23 feet thick. Bill O'Connell
10/24/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78137 name: Building 5750 Disposal Pit Bill O'Connell
6/5/2009 Report or Workplan Review - Other Reviewed work plan for free product recovery at Building 4801. An excavation will be opened in the area of free product to approximately 0.5 feet below the water table and the soil stockpiled on a liner. Free product will be allowed to accumulate in the excavation and will then be pumped out with a vac truck. This process will be repeated as often as necessary over a two day period. Following product removal, 480 pounds of Regenox® will be mixed and placed into the excavation followed by 50 pounds of ORC Advanced®. The excavation will then be backfilled and re-paved. Bill O'Connell
7/14/2009 Report or Workplan Review - Other Reviewed Free Product Recovery Report. Approximately 36 gallons of water/product mixture were removed from the excavation and 480 lbs of Regenox was added in lifts to backfilled soil. Additionally, 25 lbs of ORC was added in each of the two lower lifts. Wells RW-1 and MW-4 were destroyed in the process. Bill O'Connell
3/22/2012 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78135 Building 4801 Former USTs. Bill O'Connell
3/22/2012 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78136 Building 5820 Former USTs. Bill O'Connell
3/22/2012 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78137 Building 5750 Disposal Pit. Bill O'Connell
5/10/2012 Report or Workplan Review - Other Reviewed work plan for additional investigation and sampling. One new monitoring well will be installed to replace MW-4 and all remaining monitoring wells will be sampled if possible. One storm water sample will be collected from SDS-1. Bill O'Connell
11/9/2012 Report or Workplan Review - Other Reviewed Well Installation and Sampling Report for ADOT&PF Tudor Road Maintenance Facility. One replacement monitoring well, MW-4R was installed near Building 4801, groundwater samples were collected from 16 wells, and one storm water sample was collected. Prior to sample collection, site reconnaissance found six wells in good condition and nine wells in need of repair due to frost jacking or damage to the monument. Well MW-6 could not be located and MW-27 is thought to have been destroyed. MW-4R was installed as a 4-inch well to be utilized as a product recovery well if needed, though no product was encountered in any of the wells during this project. At Building 4801, groundwater samples were collected from seven wells. DRO was detected up to 10.1 mg/l at MW-4R, GRO was detected up to 276 mg/l in the same well, and benzene was detected up to 34.0 mg/l in MW-12. Toluene, ethylbenzene, and xylenes were also detected above cleanup levels in most wells sampled. Contaminant concentrations have not decreased since 2001. At Building 5820, GRO was detected up to 4.87 mg/l and benzene was detected up to 0.601 mg/l. Contaminant concentrations have shown a marked decrease since monitoring began in the mid 1990’s. At Building 5750, TCE was detected up to 3.72 mg/l in MW-22 and PCE was detected up to 0.0116 mg/l in the same well. 1,1,1-TCA, 1,1,2-TCA, or 1,1-dichloroethene were also detected above cleanup levels in each of the wells near the source area. Sentinel well contained detectable concentrations TCE, but below cleanup levels. The sample from storm drain SD-1 contained detectable concentrations of contaminants however none exceeded groundwater or surface water cleanup levels. Bill O'Connell
4/5/2013 Update or Other Action ADEC received and reviewed as built drawings of Building 5750, the Materials Lab. The drawings show the various floor drains in the building tied into the sanitary sewer and not the storm sewer. The sanitary sewer exits the building on the south side and joins up with the sewer main. Bill O'Connell
4/9/2013 Report or Workplan Review - Other Reviewed proposal/work plan for vapor intrusion assessment ad Building 5750. Following completion of a building survey, four sub-slab vapor sampling points will be installed and sampled, and three indoor and one outdoor air sample will be collected. Leak detection at the sub-slab sampling points will consist of a shut-in test and helium will be used as a tracer gas for leak detection during sampling. Indoor and outdoor samples will be collected over a 24 hour period. All samples will be analyzed for TCE using EPA Method TO 15 with a detection limit of 1.5 ug/m3. Indoor and outdoor air samples will be placed on hold pending analysis of sub-slab samples. Bill O'Connell
7/5/2013 Report or Workplan Review - Other Reviewed Vapor Intrusion Evaluation for 5750 Tudor Road, ADOT&PF Materials lab. Three subslab vapor monitoring points were installed; one near the source area in the SE corner of the building, and two in the materials lab. Sub slab vapor samples contained PCE above the shallow soil gas screening level of 88 ug/m3 in each of the three samples ranging from 180 ug/m3 to 130,000 ug/m3 near the source area. Indoor air samples were collected in three locations; two in the materials lab and one in the office area. TCE was not detected in the office area sample but was detected above the indoor air target level of 8.8 ug/m3 in the materials lab sample closest to the source area at 9.6 ug/m3. This sample was collected in an area known as the Breakdown Room, which is not continually occupied. ADEC issued a letter to the Materials Lab Manager informing him of the exceedance and recommending workers limit their time in this area and that pregnant women and women of child bearing age not be allowed in this area. Bill O'Connell
7/1/2014 Report or Workplan Review - Other Reviewed Sub-Slab Depressurization System installation report. Following design and diagnostic testing, two separate extraction systems were installed, each consisting of a sub-slab extraction point, piping, inline blower (RadonAway HS5000), and insulated exhaust stack that vents above the roofline on the south side of the materials lab. One week after operation of the system began, sub-slab and indoor air samples were collected to evaluate the effectives of the system. Indoor air samples did not contain concentrations of TCE above target levels. The sub-slab sample from the source area beneath the cement lab contained TCE at 3,100 mg/m3 which is above the soil-gas target level of 84 mg/m3 but represents a significant decrease from the 130,000 mg/m3 TCE that was detected in this location before the system was installed indicating the system is operating as designed. Additional air sampling will be conducted as needed to monitor the effectiveness of the system. Bill O'Connell
8/18/2015 Cleanup Plan Approved Approximately 30 cubic yards of contaminated soil was identified during trenching and excavation activities for the Tudor Road Complex lighting upgrades. From this 3 samples were collected and sampled for GRO, DRO, and BTEX. All soil samples collected contained DRO, and GRO, however DRO in only one sample exceeded the ADEC cleanup level. ADEC therefore approved the work plan to spread the soil on the southeast corner of the facility, and allow for natural attenuation. Chelsy Passmore

Contaminant Information

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