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Site Report: AAA Transmission Exchange, former Chugiak Texaco


Site Name: AAA Transmission Exchange, former Chugiak Texaco
Address: Mi. 18 Old Glenn Hwy.; , 16206 OLD GLENN HWY, Chugiak, AK 99567
File Number: 2106.26.002
Hazard ID: 23983
Status: Active
Staff: Amy Rodman, 9074655368 amy.rodman@alaska.gov
Latitude: 61.367161
Longitude: -149.513689
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

Gasoline contamination from USTs and diesel contamination from AST identified in 1992. Monitoring wells were installed in 1994. Some contaminated soil was removed and treated in 2002 and 2003. A soil vapor extraction system was installed in 2004. Soil Vapor Extraction system installed in OASIS in 2004. A Class A drinking water well for the nearby Inlet View Mobile Home Park is located on the property and was non-detect when sampled in 2008 by ADEC Drinking Water Program. Soil and groundwater contamination remain above site cleanup levels. F.K.A. L25.16

Action Information

Action Date Action Description DEC Staff
11/20/1992 Underground Storage Tank Site Characterization or Assessment August 1992 report from Shannon & Wilson. Up to 4220ppm GRO, 30ppm benzene, 800ppm BTEX, 661ppm DRO remains in the ground. * Not Assigned
11/20/1992 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77955 ADD; * Not Assigned
11/20/1992 Site Added to Database * Not Assigned
11/21/1992 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU; :LCAU Date changed DB conversion * Not Assigned
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: JEAN KNOWLTON * Not Assigned
10/19/1999 Site Characterization Report Approved On 10/19/99 five soil borings were sampled and four were completed as monitoring wells (MW-1 to MW-4R). Up to 5130 mg/kg DRO, 669 mg/kg GRO, 4320 mg/kg RRO, and 3.67 mg/kg benzene in the soil samples collected. Robert Weimer
10/10/2000 Site Characterization Report Approved On 10/10/00 nine soil borings were sampled and eight were completed as monitoring wells (MW-5 to MW-12). Up to 5600 mg/kg DRO, 2310 mg/kg GRO, and 0.112 mg/kg benzene in the soil samples collected. Robert Weimer
4/16/2002 Leaking Underground Storage Tank Corrective Action Underway Corrective action plan approved to excavate gasoline contaminated soil and have it thermally treated at ASR. Robert Weimer
7/10/2002 Report or Workplan Review - Other For the 7/10/02 groundwater monitoring event up to 35.5 mg/l DRO, 78.8 mg/l GRO, and 2.12 mg/l benzene in groundwater. Concentrations increased in 3 of the 5 monitoring wells sampled. Groundwater flow direction was to the northeast during this monitoring event. Depth to groundwater was around 6.2 to 10.0 feet below ground surface. Robert Weimer
11/15/2002 Report or Workplan Review - Other July 2002 they removed 1,000 tons of gasoline contaminated soil along with two most contaminated monitoring wells (MW-1 and MW-2). Up to 2,610 mg/kg GRO, and 26.1 mg/kg benzene near building (northeast side) and utilities (gas line). Full extent of the contamination not known. Robert Weimer
1/2/2003 Release Investigation ADEC letter requesting a release investigation workplan to define extent of soil and groundwater contamination. Corrective action will be needed for the remaining contamination. Robert Weimer
5/15/2003 Report or Workplan Review - Other For the 5/15/03 groundwater monitoring event up to 43.8 mg/l DRO, 4.35 mg/l RRO, 1.13 mg/l GRO, and 0.173 mg/l benzene in groundwater. Concentrations increased in 2 of the 8 monitoring wells sampled. Groundwater flow direction was to the southeast during this monitoring event. Depth to groundwater was around 8.3 to 11.5 feet below ground surface. Robert Weimer
9/8/2003 Update or Other Action Approved corrective action plan for the installation of a soil vapor extraction system. Robert Weimer
1/27/2004 Report or Workplan Review - Other Reviewed corrective action report for work done in 2002/2003. 1,000 tons of gasoline contaminate soil removed (2002), SVE system installed (2002), and 3 additional monitoring wells installed (2003). Soil and groundwater contamination remain. Robert Weimer
1/29/2004 Update or Other Action Approved reduction in groundwater monitoring to quarterly in MW3(BTEX, DRO,RRO), MW7(DRO, RRO), MW8(DRO, RRO), MW10(BTEX), MW11(BTEX), MW13(BTEX, GRO, DRO, RRO), MW14(BTEX, GRO, RRO), and MW15(BTEX, DRO, RRO). Robert Weimer
2/24/2004 Report or Workplan Review - Other For the 2/24/04 groundwater monitoring event up to 21.5 mg/l DRO, 3.19 mg/l RRO, 0.825 mg/l GRO, and 0.887 mg/l benzene in groundwater. Concentrations increased in 3 of the 6 monitoring wells sampled. Groundwater flow direction was to the southeast during this monitoring event. Depth to groundwater was around 10.6 to 13.5 feet below ground surface. Robert Weimer
4/16/2004 Update or Other Action Approved work scope amendment. Robert Weimer
5/4/2004 Update or Other Action Approved the May 4, 2004 corrective action plan amendment. Robert Weimer
6/16/2004 Report or Workplan Review - Other Reviewed Remediation and groundwater monitoring report. Soil vapor extraction (SVE) system operational February 2004, and enhanced with two additional SVE wells on May 2004. Before system enhancement between 2/25/04 and 5/14/04 an estimated 0.083 pounds of benzene, and 15.839 pounds of GRO was removed. For the 5/10/04 groundwater monitoring event up to 21.5 mg/l DRO, 2.21 mg/l RRO, 0.377 mg/l GRO, and 0.0033 mg/l benzene in groundwater. Concentrations increased in 4 of the 6 monitoring wells sampled. Groundwater flow direction was to the northeast during this monitoring event. Depth to groundwater was around 6.5 to 9.8 feet below ground surface. Robert Weimer
12/16/2004 Update or Other Action On property Class A drinking water well sampled for VOCs for the drinking water program. The sample was non-detect. The well serves the Inlet View Mobile Home Park. Robert Weimer
12/23/2004 Report or Workplan Review - Other Drinking water wells search conducted. 12 drinking water wells identified within 1,000 feet of the site, including 1 drinking water well (on-property) 100 feet north of the former tank excavation. Robert Weimer
1/9/2008 Update or Other Action Class A drinking water well on the property was sampled for VOCs for the ADEC drinking water program. The sample was non-detect. The well serves the Inlet View Mobile Home Park. Robert Weimer
1/28/2008 Update or Other Action Elwood Daw is the current property owner, since about 2002/2003. He mentioned to ADOT that the vapor extraction system is not currently operating and he does not have a key to the system. Robert Weimer
3/27/2008 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
12/21/2010 Update or Other Action Have not received further groundwater monitoring, remediation system, or corrective action reports. Robert Weimer
10/28/2011 Update or Other Action Still have not received further groundwater monitoring, remediation system, or corrective action reports. Robert Weimer
11/1/2012 Potentially Responsible Party/State Interest Letter PRP letter sent to the current property owner Elwood & Peggy Daw. Robert Weimer
11/30/2012 Update or Other Action Call from property owner. The remediation system power has been disconnected since 2004. The previous property owner was supposed to do the site work and pay the electrical costs to run the remediation system. The current property owner has contacted an environmental firm to do the site work and an attorney to get the past property owner to pay. We discussed that initially they need to sample the drinking water wells and monitoring wells. He said that the monitoring wells across the road were destroyed during past road work. Robert Weimer
1/29/2014 Update or Other Action Project manager changed to Amy Dieffenbacher, transferred to Juneau Annie Ariel
5/9/2014 Update or Other Action Telephone conversation with Mr. Daw. He stated his lawyer mailed a letter in 2013 to Robert Weimer. He stated that he has a contract with Jean Knowlton. He said he purchased the property in 1997 and gave a verbal synopsis of site history and know past spills. Amy Rodman
6/5/2014 Update or Other Action Telephone conversation with Mr. Daw. Requested copy of contract between him and Ms. Knowlton regarding financial liability for site remediation costs. Amy Rodman
5/29/2015 Meeting or Teleconference Held Telephone call with Northrim Engineering to discuss scope of work for site. Will draft work plan request letter to RP and Northrim Engineering. Amy Rodman
6/24/2015 Update or Other Action mailed Corrective Action Work Plan request letter to RP via USPS Certified Mail. Emailed copy of this letter to consultant (Northrim Engineering). Deadline: July 24, 2015. Amy Rodman
10/12/2016 Update or Other Action Email received from Northrim Engineering with August 2016 fieldwork data (field-screening results, soil sampling results and groundwater sampling results). On August 18, 2016, soil samples collected from three locations (north and east of former Texaco building) and analyzed for benzene, toluene, ethylbenzene, total xylenes (BTEX), diesel range organics (DRO), and residual range organics (RRO). On August 24, 2016 two groundwater samples were collected from monitoring wells immediately southeast of the former Texaco building and analyzed for BTEX and total petroleum hydrocarbon (TPH) with silica gel. Data submission occurred without an ADEC-approved work plan, which is required by 18 AAC 75.335. Items requested from June 2015 work plan request letter mailed to RP and Northrim Engineer from DEC were not addressed in this August 2016 data submission. Amy Rodman
11/10/2016 Update or Other Action Site Characterization Work Plan request letter emailed to RP and Northrim Engineering. Amy Rodman
11/23/2016 Update or Other Action updated site's location on DEC's Contaminated Sites GIS map. Amy Rodman
12/5/2016 Enforcement Action Notice of Violation letter mailed to current RP via USPS Certified Mail and past RP via USPS Certified Mail. Amy Rodman
12/14/2016 Update or Other Action DEC office received hard copy of Notice of Violation letter, originally mailed to RP on December 5th. Front of envelope states, "Return to Sender, Attempted - Not Known, Unable to Forward" This is the only document ever returned to DEC from RP's mailing address, to date. Amy Rodman
12/21/2016 Enforcement Action Emailed a PDF copy of Notice of Violation letter to RP and Northrim Engineering. Read receipt from RP emailed to DEC Project Manager at 1:19am on December 20, 2016. Amy Rodman
12/22/2016 Update or Other Action Telephone conversation with RP to discuss holding a teleconference between him, Northrim Engineering and DEC CS staff in January 2017. Will follow-up by telephone at the beginning of January 2017 to secure teleconference day/time. Amy Rodman
2/3/2017 Meeting or Teleconference Held Teleconference with RP, consultant, DEC program managers and DEC project manager held. Discussed December 2016 Notice of Violation letter contents. Follow-up action from DEC project manager: detailed work plan request letter to RP & consultant. Amy Rodman
10/4/2017 Update or Other Action Site Characterization work plan received reviewed by ADEC on October 2: rejected due to insufficient details on proposed soil and groundwater characterization, along with not meeting 18 AAC 75.335 (Site Characterization) requirements. Revised work plan due November 6, 2017. Amy Rodman
12/13/2017 Update or Other Action Site characterization work plan approved. Proposed activities include groundwater sampling of MW8, MW3, and MW7. Samples will be analyzed for DRO, GRO, & BTEX. MW3 sample will be submitted for analysis of full VOC's. Amy Rodman

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

Requirements

Description Details

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Missing Location Data

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