Skip to content Skip to content

Alaska Department of Environmental Conservation

You are here: DEC / SPAR / CSP / SPAR Online Services / Contaminated Sites Search / Site Report

Site Report: Chevron - #8111

Site Name: Chevron - #8111
Address: 2801 Boniface Pkwy; , Anchorage, AK 99504
File Number: 2100.26.002
Hazard ID: 23379
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 61.194909
Longitude: -149.777689
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

Petroleum hydrocarbon contamination detected in March of 1988 during a ADOT site assessment. Gasoline/diesel/used oil contaminated soils & groundwater documented in December 1988. Approximately 1000 cubic yards of contaminated soils removed and new tanks installed during facility upgrade in 1989. The excavated contaminated soils were thermally treated. Another used oil tank was removed in 1994. Some soil contamination (900 mg/kg DRO) was identified in 1994 as remaining at 11 feet below ground surface below the station building at the location of a former used oil tank that was removed in 1994. All groundwater samples meet cleanup levels and all monitoring wells have been decommissioned in accordance with an approved plan. ADEC has determined that the contaminant concentrations remaining at the site do not pose an unacceptable risk to human health or the environment, and the site was closed on October 6, 2011. F.K.A. L10.02

Action Information

Action Date Action Description DEC Staff
2/18/1988 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77945 Former Staff
2/18/1988 Site Added to Database Former Staff
2/19/1988 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU Date changed DB conversion Former Staff
3/7/1988 Document, Report, or Work plan Review - other Woodward Clyde soil gas survey conducted found BTX concentrations at locations C2, C2, C4, C5 at above trace levels. Contamination detected appears to be from gas and diesel components. Recommend additional test borings for identification of subsurface contamination. Former Staff
4/11/1988 Underground Storage Tank Site Characterization or Assessment Woodward Clyde found significant shallow contamination at S5-S7 which are located on a topographic low that collects roadway surface runoff. Significant groundwater contamination has occurred in areas of C4 & C7. Former Staff
5/16/1988 Site Visit Chevron sends letter stating that tanks tested "tight" using the Petrotite method because leakage indicated was less than NFPA standards of 0.05 gallons/hour. Former Staff
12/7/1988 Release Investigation RZA sends subsurface petroleum hydrocarbon evaluation which detected aromatic hydrocarbons in borings B-3, B-6 & B-8. Levels ranged from 5 ppb toluene to 2890 ppb for m+p xylenes. Wells MW-2 and MW-3 had levels ranging from 16 ppb ethylbenzene to 908ppb for benzene. Former Staff
7/18/1989 Document, Report, or Work plan Review - other USTs removed 7/89. New UST facilities put in place. Former Staff
8/21/1989 Leaking Underground Storage Tank Corrective Action Underway Anchorage Sand & Gravel received 1430 tons of fuel stained soils from site. They were processed at the Klatt Road Facility. Soils were then blended with AC-5 for use as non-spec black base material. Former Staff
9/5/1989 Update or Other Action Interim storage guidelines for used oil contaminated soils sent to Chevron. DEC requests that Chevron submit plan to treat used oil soils currently stored on site. Off-site storage location must be approved by ADEC. Former Staff
9/8/1989 Document, Report, or Work plan Review - other Chevron sends on line testing results which show that lines were within established tolerances and soils were not stained by petroleum products. Former Staff
9/15/1989 Document, Report, or Work plan Review - other RZA sends results from groundwater sampling from 9/15/89 which showed MW-4 with 18 mg/l total petroleum hydrocarbons. Former Staff
9/27/1989 Update or Other Action Chevron proposes to treat used oil contaminated soils at Alaska Pollution Control in Palmer. After processing the soil will be transported to Municipality landfill in Eagle River for disposal. Plan approved by ADEC 9/27/89. Former Staff
1/2/1991 Document, Report, or Work plan Review - other RZA sends in groundwater sampling from 4 on-site monitoring wells. Results indicated detectable concentrations of volatile aromatic hydrocarbons .035ppm xylenes & total petroleum hydrocarbons 16ppm. Former Staff
10/17/1991 Document, Report, or Work plan Review - other Groundwater sampling report showed 37 ppb o-xylenes and 8.0 ppm TPH in well MW-3. Former Staff
2/8/1995 Document, Report, or Work plan Review - other Site assessment review. Requested release investigation and corrective action plan. 900 mg/kg DRO left at 14 feet below ground surface at the former used oil tank located near the southeast corner of the property. Former Staff
10/10/1995 Document, Report, or Work plan Review - other Reviewed a remedial investigation report. Former Staff
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: CHEVRON PRODUCTS COMPANY, INC/PERMITS DESK Former Staff
4/18/2000 Document, Report, or Work plan Review - other Used oil tank removed during station remodeling. Linda Nuechterlein
1/30/2001 Update or Other Action Annual meeting with ADEC & Chevron to review AK sites and set goals for 2001. See meeting notes for details. Linda Nuechterlein
12/4/2002 Update or Other Action Annual meeting to discuss sites. Proposed method 3 levels not complete because it only looked at soil sampling data since 1999. Older soil contamination areas remain. Ground water contamination remains and is increasing in some wells. Robert Weimer
12/17/2003 Update or Other Action Approved reduction in groundwater monitoring. Robert Weimer
8/9/2004 Document, Report, or Work plan Review - other June 4, 2004 groundwater sampling. Up to .28 mg/l DRO in groundwater. Contamination levels are decreasing. Robert Weimer
12/7/2004 Document, Report, or Work plan Review - other September 28, 2004 groundwater sampling. Up to .28 mg/l DRO in groundwater. Contamination levels are stable. Robert Weimer
2/23/2005 Update or Other Action Meeting with RP's new consultant to discuss site. They are to submit a workplan for confirmation soil samples, including the pre 1999 areas. Robert Weimer
7/5/2005 Update or Other Action Discussed proposed confirmation sampling workplan with consultant. Robert Weimer
7/7/2005 Update or Other Action ADEC approves confirmation soil sampling workplan with addendum. Plan calls for the sampling of 4 locations. 1 additional location (former used oil tank) under the new building will need to be sampled at a later date. Robert Weimer
8/11/2005 Document, Report, or Work plan Review - other May 9, 2005 groundwater sampling. Up to .41 mg/l DRO in groundwater. Contamination levels are relatively stable. Groundwater flow direction is to the northwest. Robert Weimer
10/3/2005 Update or Other Action Approved corrective action plan for 2 drums of contaminated soil to be thermally treated at ASR. Robert Weimer
11/16/2005 Document, Report, or Work plan Review - other September 16, 2005 groundwater sampling. Up to .16 mg/l DRO and 1.4 ug/l benzene in groundwater. Contamination levels are relatively stable. Groundwater flow direction is to the northwest. Depth to groundwater was 15 to 16 feet below ground surface. Robert Weimer
3/9/2006 Document, Report, or Work plan Review - other September 2005 three soil borings were drilled to collect confirmation soil samples. Up to 13 mg/kg DRO, 9.6 mg/kg GRO, and 0.04 mg/kg benzene were found at a depth of 14 feet at soil boring CB-1. Robert Weimer
7/17/2006 Document, Report, or Work plan Review - other May 15, 2006 groundwater sampling. Up to 0.5 mg/l DRO and <0.5 ug/l benzene in groundwater. Contamination levels are relatively stable. Groundwater flow direction is to the south. Depth to groundwater was 15 to 16 feet below ground surface. Robert Weimer
9/5/2006 Update or Other Action ADEC approves confirmation sampling workplan for 4 soil borings. Robert Weimer
10/12/2006 Update or Other Action ADEC approves the thermal treatment of 3 drums of drill cuttings. Robert Weimer
4/2/2007 Update or Other Action Meeting with RP to discuss site. The results of the confirmation soil sampling conducted in 2006 are to be reviewed. To evaluate this site in the future for potential conditional closure. Robert Weimer
6/21/2007 Update or Other Action Meeting with RP's consultant to discuss future site work. Confirmation sampling conducted in 2006 all areas sampled met site cleanup levels except CB-2 which had an elevated benzene detection limit over cleanup levels. He will submit a workplan to collect a confirmation soil sample for BTEX at CB-2 at 7.5 feet below ground surface. After conducting the work they may submit a request for conditional closure for the contamination remaining under the building. Robert Weimer
7/27/2007 Update or Other Action ADEC approves workplan to collect a confirmation soil sample for BTEX at CB-2 at 7.5 feet below ground surface. After conducting the work they may submit a request for conditional closure for the contamination remaining under the building. Robert Weimer
8/16/2007 Document, Report, or Work plan Review - other August 16, 2007 groundwater sampling. Up to 0.12 mg/l DRO, 0.01 mg/kg GRO, and <1 ug/l benzene in groundwater. Contamination levels are relatively stable. Groundwater flow direction is to the northwest. Depth to groundwater was 15.69 to 17.90 feet below ground surface. Robert Weimer
10/9/2007 Update or Other Action ADEC approves the thermal treatment of 1 drum of drill cuttings. Robert Weimer
3/21/2008 Exposure Tracking Model Ranking Site ranked on the new Exposure Tracking Model (ETM). The ETM is a new site ranking system that looks at, based on available data, the potential exposure pathways for the contamination remaining at the site. Robert Weimer
3/28/2008 Update or Other Action Meeting with RP's consultant to discuss future work at this site. They plan to install a confirmation soil boring and conditional closure request for the contamination underneath the building. Robert Weimer
4/21/2008 Update or Other Action ADEC approves treatment of 25 gallons of contaminated purge water. Robert Weimer
6/23/2008 Document, Report, or Work plan Review - other June 23, 2008 groundwater sampling. Up to 0.15 mg/l DRO and <1 ug/l benzene in groundwater. Contamination levels are relatively stable. Groundwater flow direction is to the northwest. Depth to groundwater was 14.90 to 16.11 feet below ground surface. Robert Weimer
6/23/2008 Site Visit At the request of the project manager, the quality assurance officer was onsite during ground water sampling activities to oversee compliance with ADEC approved work plans. Not deviations were noted. Brenton Porter
9/25/2008 Update or Other Action ADEC approves treatment of contaminated purge water. Robert Weimer
2/25/2009 Meeting or Teleconference Held Meeting with Chevron and their consultants. They are to conduct an evaluation of indoor air at this site. ADEC to review confimation soil boring results and request for cleanup complete status. Robert Weimer
3/4/2009 Document, Report, or Work plan Review - other August 7, 2008 groundwater sampling. Up to 0.38 mg/l DRO and <1 ug/l benzene in groundwater. Contamination levels are relatively stable. Groundwater flow direction is to the northwest. Depth to groundwater was 15.15 to 16.39 feet below ground surface. Robert Weimer
3/16/2009 Document, Report, or Work plan Review - other On September 12, 2007 one soil boring (CB-6) was drilled near CB-2 to collect confirmation soil samples near the eastern dispenser islands at 8 feet below ground surface. Up to <4.2 mg/kg DRO, <0.5 mg/kg GRO, and <0.005 mg/kg benzene were found at a depth of 8 feet in soil boring CB-6. Robert Weimer
3/31/2009 Update or Other Action ADEC approves reduction to annual groundwater monitoring. Robert Weimer
4/8/2010 Document, Report, or Work plan Review - other DEC review of Site Vapor Intrusion Evaluation report for this site. The report concluded that this site does not have a potential for vapor intrusion based on the remaining concentrations in the soil and groundwater at this site. Robert Weimer
4/19/2010 Document, Report, or Work plan Review - other December 16, 2009 groundwater sampling. Up to 0.40 mg/l DRO, <0.010 mg/l GRO, and <0.5 ug/l benzene in groundwater. Contamination levels are relatively stable. Groundwater flow direction is to the northwest. Depth to groundwater was 16.38 to 17.54 feet below ground surface. Robert Weimer
12/21/2010 Update or Other Action Updated ETM to reflect recent soil and groundwater data. De Minimis amount of DRO (900 mg/kg at 11 feet bgs) contamination in the soil under building. All other soil and groundwater samples meet site cleanup levels. Robert Weimer
12/21/2010 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77945 1988 contamination. Robert Weimer
1/3/2011 Update or Other Action DEC approved discontinuing groundwater monitoring and decommissioning all of the site monitoring wells. DEC requested a schedule for conducting the decommissioning. Robert Weimer
3/2/2011 Document, Report, or Work plan Review - other DEC approved an updated decommissioning method for all of the site monitoring wells. The work is scheduled for 3/4/11. Robert Weimer
10/21/2011 Cleanup Complete Determination Issued ADEC has determined that the contaminant concentrations remaining at the site do not pose an unacceptable risk to human health or the environment, and the site was closed on October 6, 2011. Robert Weimer
10/21/2011 Institutional Control Record Removed Institutional Controls have been removed. Robert Weimer
8/7/2015 Update or Other Action This file has been archived at Alaska Archives Barcode: 795760 Box 389 Susan Carberry

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil 900 mg/kg DRO soil under building

Control Type

Type Details
No ICs Required

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.

No associated sites were found.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.
Continue     Close

Public Notices  •  Regulations  •  Statutes
Press Releases  •  Contact

 

State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
TDD: 800-770-8973
Physical Location: 410 Willoughby