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Site Report: ARRC Diesel Tank Pumphouse


Site Name: ARRC Diesel Tank Pumphouse
Address: Whitney Road, Ship Creek Railroad Yard, Anchorage, AK 99501
File Number: 2100.38.038
Hazard ID: 1208
Status: Active
Staff: Grant Lidren, 9072698685 grant.lidren@alaska.gov
Latitude: 61.227076
Longitude: -149.875025
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.

Problems/Comments

In 1991, 600 gallons of diesel released from the engine loading pump due to a broken seal. Approximately 100 gallons of diesel was recovered by absorbent pads. Approximately 750 square feet of soil may be impacted. This site is located at the Groundwater Area 7 (GW-7) in the Anchorage Terminal Reserve. Groundwater contains benzene up to 0.25 milligrams per liter (mg/L) and C12-C16 aliphatics up to 0.191 mg/L. For more information, consult Contaminated Sites File Number 2100.38.447 ARRC Anchorage Terminal Reserve. Remedial Investigation ARRC Anchorage Terminal Reserve U.S. Environmental Protection Agency (EPA) Docket No. Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 10-2004-0065, submitted by ENSR.

Action Information

Action Date Action Description DEC Staff
11/5/1991 Site Added to Database Diesel fuel spill. No Longer Assigned
6/22/1993 Update or Other Action Notice of Release sent which includes observation on 6/15 of surface staining. No Longer Assigned
8/16/2004 Update or Other Action File number switched from CS57.08 to 2100.38.038 Sarah Cunningham
9/21/2007 Exposure Tracking Model Ranking Intitial Ranking Complete for Source Area: 72187 (Autogenerated Action)
11/1/2011 Update or Other Action Update: this site is located at the Groundwater Area 7 in the Anchorage Terminal Reserve. Groundwater contains benzene up to 0.25 mg/L and C12-C16 aliphatics up to 0.191 mg/L. For more information consult CS file # 2100.38.447 ARRC Anchorage Terminal Reserve Remedial Investigation ARRC Anchorage Terminal Reserve U.S. EPA Docket No. CERCLA 10-2004-0065, submitted by ENSR. Grant Lidren
2/19/2015 Potentially Responsible Party/State Interest Letter PRP letter sent to ARRC on this date Grant Lidren
3/15/2018 Site Characterization Report Approved ADEC received the Letter Report for Groundwater Sampling within the ARRC Anchorage Terminal Reserve Whitney Road, Anchorage, Alaska ADEC File # 2100.38.447, Hazard ID 4074 Rev. 1.3 submitted by RSE and dated March 9, 2018. Eleven monitoring wells were proposed to be sampled within the Anchorage Terminal Reserve: MWB17, DPB21, MW24, MWB09, MWA05, MWA07, DPB04, DPA32, MWA22, MWE05, and MWE06. Two of these wells, DPB21 (GW-1) and MWE05 (GW-7), were not sampled due to poor well condition and free product respectively. These 11 MWs are half the wells on the property, the remaining wells will be sampled in 2018. Monitoring wells MW24 (GW 2/3) and MWE06 (GW-7) produced purge water emitting strong hydrocarbon odor. Monitoring well MWA07 (GW-6) produced purge water with visible sheen. Monitoring wells MWA07 (GW-6) and MWE06 (GW-7) contained DRO of 2.42 mg/L and 27.6 mg/L respectively exceeding the ADEC Table C Groundwater Cleanup Level (GCL) of 1.5 mg/L. Sampling of monitoring wells MWA05 (GW-6) and MWE06 (GW-7) contained RRO of 2.42 mg/L and 3.17 mg/L respectively exceeding the GCL of 1.1 mg/L RRO. Monitoring well MWE06 (GW-7) contained 1,2,4-trimethylbenzene at 117 ug/L exceeding the GCL of 15 ug/L and naphthalene at 270 ug/L exceeding the GCL of 1.7 ug/L. Sample MWB17 (GW-1) contained chloroform at 2.90 ug/L above the GCL of 2.2 ug/L chloroform and trichloroethylene(TCE) at 14.7 ug/L exceeding the GCL of 2.8 ug/L. Monitoring well DBP04 (GW-4) contained vinyl chloride at 1.27 ug/L exceeding the GCL of 0.19 ug/L.MWA05 (GW-6) contained cadmium (25.3 ug/L) and vanadium (180 ug/L) each exceeding the respective GCL of 9.2 ug/L cadmium and 86 ug/L vanadium. This well had evidence of compromise, with an exposed wellhead that may have contributed to groundwater being exposed to external conditions and should be decommissioned. Grant Lidren

Contaminant Information

Name Level Description Media Comments

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Type Details

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Description Details

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