| Action Date |
Action |
Description |
DEC Staff |
| 12/16/1993 |
Document, Report, or Work plan Review - other |
ADEC received Monitoring Stained Soil Removal from Alaska Railroad Fueling Rack, ARRC Railyard; submitted by S & W; dated December 16, 1993. Approximately 170 cubic yards of visibly discolored soils from beneath the railroad tracks, adjacent to the fueling rack, was excavated 18 inches bgs. The excavated soil, some of which was fertilized, was placed into a long term storage treatment cell. Seven soil samples collected from the depths of the excavation and six soil samples collected from test pits contained DRO up to 65,900 mg/kg and benzene up to 0.2 mg/kg. |
Grant Lidren |
| 10/3/1994 |
Update or Other Action |
On this date, 245.47 tons of contaminated soil was thermally remediated at ASR. |
Grant Lidren |
| 3/27/2007 |
Exposure Tracking Model Ranking |
Initial ranking |
Bill O'Connell |
| 6/21/2007 |
Update or Other Action |
Remedial Investigation Alaska Railroad Corporation Anchorage Terminal Reserve U.S. EPA Docket No. CERCLA 10-2004-0065, submitted by RETEC. Sampling conducted at the ARRC Fueling Rack, aka Groundwater Area 7(GW-7) found 2.34 mg/L GRO, 3.67 mg/L DRO, 0.025 mg/L benzene, 0.0077 mg/L 1,1,2-trichloroethane. This site is located on the north-central part of the fuel yard in an area of historic fueling and is confined to railyard property. For more information consult CS file # 2100.38.447 ARRC Anchorage Terminal Reserve
|
Grant Lidren |
| 5/21/2015 |
Update or Other Action |
On this date, ADEC received the Environmental Investigation, Modeling and Pipe Recommendations for the ARRC Anchorage Terminal Reserve Waterline Rehabilitation Project, submitted by RSE and dated December 2014. As part of this investigation, seven boreholes (TB1 to TB7) were completed as temporary MWs adjacent to the Fueling Rack area. Only TB4 contained soil contamination above cleanup levels. Soil samples collected at the GW interface at 12.5 feet bgs contained TCE at 0.0384 mg/kg and PCE at 0.0485 mg/kg. Only two temporary wells contained contamination above cleanup levels. Groundwater samples collected from TB4 and TB5 contained DRO and RRO up to 3.40 mg/L and 8.06 mg/L respectively. For more information consult CS file # 2100.38.557 ARRC Anchorage Terminal Reserve Utility Upgrades. |
Grant Lidren |
| 5/26/2015 |
Update or Other Action |
On this date, ADEC received the AWWU PN 6526 - ARRC Yard Rehabilitation Water Phase 1: Work Plan for Potentially Contaminated Soil and Groundwater Management. For more information consult CS file #2100.38.557 ARRC Anchorage Terminal Reserve Utility Upgrades. |
Grant Lidren |
| 4/23/2019 |
Site Characterization Report Approved |
On this date, ADEC received the Letter Report for Groundwater Sampling within the ARRC Anchorage Terminal Reserve submitted by RSE and dated April 23, 2019.The eight groundwater Monitoring wells sampled include: MWB08, MWD01, DPD04, MWE04, MWC02, MWE20, MWC01, and MWE11. Monitoring wells MWE04, MWC02, MWE20, MWC01 (all located within ARRC fueling rack and Princess/West tours contaminated sites in the railyard) contained DRO above table C between 1.57 mg/L to 9.09 mg/L. Monitoring wells MWE04 and MWE20 (both located within and downgradient of the ARRC fueling rack) contained RRO above table C between 1.64 mg/L and 3.45 mg/L. Monitoring well MWB08 (located within GW 2/3&4) and MWE04 (ARRC fueling rack) contained VC above TABLE C cleanup levels at 0.510 ug/L and 0.300 ug/L respectively.MWE04 (ARRC fueling rack) contained benzo(a)anthracene and fluorene above table C cleanup levels at 0.330 ug/L and 8.39 ug/L respectively. MWC01 (ARRC Knik Arm Power plant) contained eight PAHs above table C cleanup levels including: benzo (a)anthracene at 1.15 ug/L; benzo[a]pyrene at 1.79 ug/L; benzo[b]flouranthene at 2.54 ug/L; benzo[g,h,i]perylene at 1.59 ug/L; benzo[k]fluoranthene at 0.880 ug/L; chrysene at 2.22 ug/L; dibenzo[a,h]anthracene at 0.403 ug/L; and Indeno[1,2,3-c,d]pyrene at 1.26 ug/L.MWE11 (located east of GW-5/Arctic Cooperage) contained Arsenic above table C cleanup levels at 13.2 ug/L. MWE20 (located downgradient of the fueling rack) contained four metals above table C cleanup levels including: arsenic at 139 ug/L, cadmium 29.4 ug/L, lead at 231 ug/L, and mercury at 2.7g ug/L. Only monitoring wells MWD01 and DPD04, located upgradient adjacent to bluff, did not contain any contaminant concentrations above Table C cleanup levels. |
Grant Lidren |
| 9/3/2019 |
Document, Report, or Work plan Review - other |
ADEC received the ARRC Locomotive Refueling Facility Soil Management Plan submitted by RSE and dated August 30, 2019. Three soil samples were collected from the proposed truck fill stand at depths of 1.0, 5.0, and 12.5 feet bgs. Only the 12.5 foot depth sample contained contamination above cleanup levels with TCE ay 0.39 mg/kg. Four soil samples collected from the fuel rack area to a depth of 1.0 feet bgs contained DRO up to 19,700 mg/kg, 1,2,4 TMB up to 0.171 mg/kg, naphthalene up to 1.21 mg/kg, TCE up to 0.118 mg/kg,1-methylnaphthalene up to 1.88 mg/kg, and 2-methylnapthalene up to 2.23 mg/kg. Soil from these areas will be excavated, stockpiled, and further characterized as part of the fueling rack upgrades. |
Grant Lidren |
| 1/28/2020 |
Site Characterization Report Approved |
On this date, ADEC received the ARRC Locomotive Refueling Facility Landfarm Plan Revision 2 submitted by RSE and dated January 28, 2019. Soil was excavated from the southern portion of the truck fill stand footprint to prepare the subgrade for installation of new foundation footings at the Truck Fill Stand site and transported to the Railroad Bluff Area for characterization and future management pending sample results. Approximately 130 cubic yards of soil was excavated and placed in the stockpile. Three soil samples collected from the pile contained benzene up to 0.0319 mg/kg, 1,2,4-TMB up to 0.196 mg/kg, naphthalene up to 0.184 mg/kg, and TCE up to 0.0237 mg/kg. In 2020 this soil will be landfarmed on a liner bermed with a silt fence. Performance soil samples will be collected. |
Grant Lidren |
