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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: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@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. Former Staff
11/20/1992 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77955 ADD; Former Staff
11/20/1992 Site Added to Database Former Staff
11/21/1992 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU; :LCAU Date changed DB conversion Former Staff
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: JEAN KNOWLTON Former Staff
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 Document, Report, or Work plan 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 Document, Report, or Work plan 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 Document, Report, or Work plan 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 Document, Report, or Work plan 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 Document, Report, or Work plan 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 Document, Report, or Work plan 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 Document, Report, or Work plan 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 known 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 Document, Report, or Work plan Review - other 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
11/8/2017 Meeting or Teleconference Held Meeting/teleconference held with ADEC staff, RP, and consultant to discuss October 2017 work plan submitted. Modified field work agreed upon. Updated work plan due to ADEC on December 8, 2017. Amy Rodman
12/13/2017 Update or Other Action Site characterization work plan reviewed and 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
7/9/2018 Update or Other Action Laboratory results for groundwater sampling of MW3, MW7, and MW8 received via email. Awaiting final report discussing these site characterization activities. Amy Rodman
8/13/2018 Update or Other Action Groundwater monitoring well sampling report approved. Letter mailed and emailed to RP and consultant. WP to address remaining soil and groundwater contamination due on September 28, 2018. Amy Rodman
2/14/2019 Update or Other Action ADEC reviewed and rejected the “Site Characterization Work Plan for T15N R1W SEC30 Lot 22 – Former Chugiak Texaco” (Work Plan) dated December 24, 2018 for the AAA Transmission Exchange, Former Chugiak Texaco site in Chugiak, AK. The Work Plan was submitted via email on December 24, 2018 by NorthRim Engineering (NorthRim). The described field effort generally consists of conducting a well survey of existing wells, triangulating groundwater flow direction, sampling groundwater from three monitoring wells for laboratory analysis, and advancing five test pits for field-screening soil, and soil sampling for laboratory analysis. Revised work plan by March 29, 2019. Amy Rodman
5/30/2019 Site Characterization Workplan Approved Work plan approved to advance five soil borings, field-screening soil samples, installing three groundwater monitoring wells, and sample existing groundwater monitoring wells. Amy Rodman
10/30/2019 Update or Other Action Soil and groundwater laboratory reports reviewed. Approval granted to transport & dispose of two 55-gallon drums of investigation-derived water at NRC Alaska. Approval granted to landspread soil cuttings (Boring 2, Boring 3, Boring 4) on grassy areas near MW-15 and MW-17, MW-16, and MW-18. Amy Rodman
1/9/2020 Site Characterization Report Approved ADEC's Contaminated Sites Program reviewed and approved the “Additional Site Characterization Activities: 16206 Old Glenn Highway” (report) dated December 2019 for the Ms. Jean Simmons by Shannon & Wilson, Inc. (S&W). The documented field work was conducted in July and August 2019 and generally consisted of advancing soil borings, installing groundwater monitoring wells, and soil sampling for laboratory analysis. ADEC requests an attempt to collect groundwater data in Spring 2020. Amy Rodman
1/22/2020 Meeting or Teleconference Held ADEC Contaminated Sites Program (CSP) project manager and management staff met with RP and RP's attorney to discuss recent report approval decision. Suggestions proposed by CSP management staff for future field work to address data gaps for site closure purposes. Amy Rodman
5/8/2020 Document, Report, or Work plan Review - other Work plan approved to sample groundwater from MW-3, -16, -17,and-18. The objective of the sampling is to document current contaminant levels to guide the need for further delineation or evaluate the site for closure with ICs Bill O'Connell
5/14/2020 Update or Other Action Groundwater samples were collected from MW3, MW16, MW17, MW18 on May 14-15. Erin Gleason
6/1/2020 Update or Other Action ADEC received field notes, monitoring well log, data table, and site plan map from Shannon and Wilson. No full report was submitted for the work conducted in May. Erin Gleason
9/23/2020 Update or Other Action Received draft environmental covenant from Mr. Robert Reges, the attorney for Mr. Jay Daw. ADEC and ADOL will review the document and provide comments to Mr. Reges. Erin Gleason
11/12/2020 Update or Other Action ADEC received letter from Mr. Jay Daw regarding the current status of his property. There are no surface stains at present the Service Station Building is currently used as his garage. He lives in a near by house. Erin Gleason
12/7/2020 Meeting or Teleconference Held Meeting with ADOL and ADEC to discuss environmental covenant revisions held on this date. Erin Gleason
12/8/2020 Meeting or Teleconference Held Meeting with ADOL and ADEC to discuss environmental covenant revisions held on this date. Erin Gleason
4/22/2021 Update or Other Action Environmental Covenant recorded with the Department of Natural Resources. The environmental covenant details where remaining contamination is located and what restrictions have been placed on the property to control exposure to any remaining contamination. Erin Gleason
4/22/2021 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77955 1992 UST contamination. Erin Gleason
11/2/2021 Cleanup Complete Determination Issued Erin Gleason
11/2/2021 Institutional Control Record Established Institutional Controls established and entered into the database. Erin Gleason

Contaminant Information

Name Level Description Media Comments
Benzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil 0.266 mg/kg in 2002
GRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil 2,610 mg/kg in 2000
Benzene > Table C Groundwater Benzene was 0.887 mg/L in 2004
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil 6,580 mg/kg in 2000
DRO > Table C Groundwater DRO was 1.59 mg/L in 2020
RRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil 4,320 mg/kg in 2000
RRO > Table C Groundwater 3.02 mg/L in 2004

Control Type

Type Details
Environmental Covenant Covenant was recorded with ADNR in April 2021

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)
Groundwater Use Restrictions No groundwater or drinking water wells shall be installed on the Property without prior ADEC approval. Nothing in this limitation prevents continuing use of the existing supply well for Public Water System AK2210354.
Groundwater Use Restrictions Contaminated groundwater may not be pumped, drained, dewatered, used for irrigation, dust control or any other purpose on or off the site without prior ADEC approval and may be subject to treatment, monitoring, or disposal requirements including any applicable permits.
New Construction Restrictions The construction of new buildings is not permitted within the approximate area of contamination that will be occupied on a permanent or temporary basis (such as for residences of office) is prohibited without prior approval by ADEC. ADEC may require a vapor intrusion evaluation prior to construct in order to determine if building occupants could be affected by vapors.
Excavation / Soil Movement Restrictions No grading, excavation, digging, tilling, or other disturbance of any kind of surface soils is permitted within the approximate area of contamination without prior approval from ADEC.
Subdivision Restriction ADEC must be notified in advance of the subdivision or replat of the Property. This covenant must be expressly referenced on any plat, deed or other document evidencing a future transaction or conveyance of any portion of the approximate area of contamination
Excavation / Soil Movement Restrictions ADEC approval is required prior to moving any soil or groundwater off the area of approximate contamination. A “site” as defined by [18 AAC 75.990 (115) or 18 AAC 78.995(134)] means an area that is contaminated, including areas contaminated by the migration of hazardous substances from a source area, regardless of property ownership. In the future, if soil will be excavated (or groundwater will be brought to the surface (for example to dewater in support of construction) it must be characterized and managed following regulations applicable at that time and ADEC approval must be obtained before moving the soil or water off the Property.
When Contaminated Soil is Accessible, Remediation Should Occur In the event that contaminated soil situated beneath the Service Station Building becomes accessible in the future due to changes at the site, the landowner shall notify ADEC. Subsequent characterization and cleanup of the soil may be required by ADEC.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

No associated sites were found.

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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