Division of Spill Prevention and Response

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Site Report: C.R. Lewis Company (Gasoline UST)


Site Name: C.R. Lewis Company (Gasoline UST)
Address: 1500 Post Rd.; , Anchorage, AK 99501
File Number: 2100.26.218
Hazard ID: 23966
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 61.225000
Longitude: -149.854700
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 tank removed in 1992. Soil and groundwater contamination were found. Excavation meets site cleanup levels and excavated soil treated on site in 1993. Three groundwater monitoring wells were installed in June 1996 to further evaluate the extent of contamination. Historic groundwater monitoring from these wells indicate decreasing levels of contamination from earlier events. Sample results from the most recent monitoring event on July 9, 1998, indicate contamination above ADEC cleanup levels in two wells: 0.007 mg/L benzene in MW-1 and 1.97mg/L diesel range organics (DRO) in MW-3. The Remedial Investigation Report prepared by the ARRC reported that contamination above ADEC cleanup levels was present in only MW-2 as follows: 0.0074 mg/L trichloroethylene (TCE) and 0.052 mg/L tetrachloroethylene (PCE). Furthermore, a September 2005 groundwater sampling event down gradient from site, next to Ship Creek, produced results below ADEC cleanup levels. The information provided to date indicates that groundwater contamination has decreased since the UST removal in 1992. 1998 groundwater sampling events indicated benzene, DRO, PCE, and TCE contamination has decreased since previous years. Any remaining contamination on site appears to be just above ADEC’s most stringent cleanup levels. Furthermore, contamination is not migrating toward Ship Creek. No further action was granted January 8, 2008 subject to institutional controls. This site is located at lease property LP-134



Action Information

Action Date Action Description DEC Staff
10/2/1992 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77652 * Not Assigned
10/2/1992 Site Added to Database * Not Assigned
10/3/1992 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU Date changed DB conversion * Not Assigned
10/5/1992 Update or Other Action Notice of Release letter. * Not Assigned
11/30/1992 Underground Storage Tank Site Characterization or Assessment Gasoline tank removed, 16 cy of stockpiled soil all below level A. Excavation soils are clean but ground water (at 8') contamination found, 48 ppm benzene & 230 ppm VPH in excavation water sample. * Not Assigned
1/22/1993 Leaking Underground Storage Tank Corrective Action Underway ADEC approved spreading stockpiles on-site. They meet site level B. * Not Assigned
4/12/1993 Release Investigation Plan to put in 4 monitoring wells to assess groundwater contamination in area of former UST. * Not Assigned
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: TRIDENT SEAFOODS * Not Assigned
11/24/1997 Update or Other Action Doug Donahue called and said that Sea Alaska is the current RP. * Not Assigned
10/3/1998 Report or Workplan Review - Other Status report submitted on this date by Terraset Inc., and received by the DEC 11/12/1998. 6 MW samples were analyzed on 7/9/98. Monitoring well MW-1 & MW-3 are contaminated with Benzene and DRO respectfully, above ADEC cleanup levels. Grant Lidren
11/30/2004 Update or Other Action There continues to be no action on this site by RP. They refused FAP grant money to complete site work. Robert Weimer
10/13/2005 Update or Other Action There continues to be no action on this site by RP. They refused FAP grant money to complete site work. Robert Weimer
2/22/2007 Exposure Tracking Model Ranking Initial ETM ranking Robert Weimer
1/17/2008 Exposure Tracking Model Ranking ETM update complete Grant Lidren
1/17/2008 Update or Other Action EPA ordered, "Remedial Investigation Report" submitted by ARRC dated 6/21/2007 reported low levels of contamination. Contamination above ADEC levels was present in well MW2 at 0.0074 mg/L TCE and 0.052 mg/L PCE. A september 2005 groundwater sampling event downgradient from site, next to Ship Creek produced results below ADEC cleanuplevels, indicated that contaminants are not migrating toward Ship Creek. Grant Lidren
1/17/2008 Conditional Closure Approved The DEC has completed review ot the Remedial Investigation Report prepared by ARRC dated 6/21/07. Currently contamination containing benzene, DRO, PCE, and TCE remain on site.Based on the information provided in this report and available environmental records, ADEC has determined that the soil contamination remaining on site exceeds the most stringent DEC soil cleanup levels, but does not pose an unacceptable risk to human health ot the environment and the site can be closed. Grant Lidren
1/17/2008 Institutional Control Record Established ADEC has determined that no further remedial action will be required at this site subject to the following conditions: A notice of contamination will be recorded on the ADEC database, any proposal to transport soil requires DEC approval in accordance with 18 AAC 78.274 (b), and groundwater wells may not be installed on site without approval from ADEC. Grant Lidren
8/1/2008 Update or Other Action Monitoring wells 1, 2, and 3 were successfully decommissioned in accordance with ADEC Guidance. Bill O'Connell
6/13/2012 Update or Other Action Staff changed from Grant Lidren to IC Unit. Kristin Brown
7/9/2012 Institutional Control Compliance Review IC review conducted. Evonne Reese
1/14/2015 Institutional Control Update An IC reminder letter was issued to the responsible party on this date. Kristin Brown
7/8/2015 Institutional Control Update Multiple attempts to contact the known responsible party with a reminder of institutional control requirements have been unsuccessful to date. There is no updated contact information available at this time. Reminder system set to follow-up in two years. IC Unit

Contaminant Information

Name Level Description Media Comments
Benzene > Table C Groundwater
DRO > Table C Groundwater
Tetrachloroethene > Table C Groundwater
Trichloroethene > Table C Groundwater


Control Type

Type Details
CS Database Notation And Letter To Landowner/RP


Requirements

Description Details
Excavation / Soil Movement Restrictions any proposal to transport soil requires DEC approval in accordance with 18 AAC 78.274 (b)
Groundwater Use Restrictions groundwater wells may not be installed on site without approval from ADEC.