Site Report: CBJ West Juneau Lift Station
| Site Name: | CBJ West Juneau Lift Station |
|---|---|
| Address: | Douglas Hwy at Juneau Bridge, Juneau, AK 99801 |
| File Number: | 1513.26.044 |
| Hazard ID: | 25078 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 58.297759 |
| Longitude: | -134.432440 |
| Horizontal Datum: | WGS84 |
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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
Ten to fifteen cubic yards of diesel contaminated soil was encountered in closure of a 300-gallon diesel underground storage tank on 4/20/1999. In fall of 2014, environmental consultant Carson Dorn Inc. (CDI) performed a second release investigation by advancing three soil borings at the historical limits of the 1999 UST closure by removal excavation. Installation of a monitoring well to sample groundwater was proposed but when no groundwater was encountered the effort was abandoned. CDI analyzed the samples for DRO, gasoline (GRO) and residual (RRO) range hydrocarbons and BTEX and PAH compounds. Concentrations of GRO, RRO, BTEX and PAH compounds in the samples were below method two migration to groundwater (M2 MTG) soil cleanup levels.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 4/20/1999 | Leaking Underground Storage Tank Release Confirmed - Petroleum | LUST Site created in CSP for source area ID 77593 (Added by System) New site added | Former Staff |
| 4/20/1999 | Site Added to Database | Former Staff | |
| 10/11/1999 | Leaking Underground Storage Tank Cleanup Initiated - Petroleum | Tank removed 4/20/99 | Former Staff |
| 2/22/2000 | Update or Other Action | SA report review. Possible groundwater impacts, other problems with report. | Former Staff |
| 10/2/2001 | Update or Other Action | Changed Project Manager from Paul Horwath to Bill Janes | Cynthia Pring-Ham |
| 3/18/2002 | Update or Other Action | Project manager changed from Janes to Wanstall. | Bruce Wanstall |
| 5/8/2002 | Update or Other Action | Notice of Intent to Cost Recover sent to CBJ. | Bruce Wanstall |
| 10/4/2006 | Update or Other Action | Organize and review file for conditional closure decision. Email request to CBJ for fate of the contaminated soil and current status of the facility. | Bruce Wanstall |
| 1/5/2007 | Exposure Tracking Model Ranking | Baseline ETM ranking completed. | Evonne Reese |
| 8/20/2007 | Update or Other Action | Develop a priority site list for CBJ Engineering and request ground water investigation at each of six leaking underground storage tank sites | Bruce Wanstall |
| 10/21/2008 | Update or Other Action | Review the site status and contact CBJ Engineering to obtain an update on the North Douglas Sewer Project, which will tie into the lift station. | Bruce Wanstall |
| 11/24/2010 | Update or Other Action | Identify the LUST site is still active with significant data gaps. Conduct an ETM ranking modification that reflects the data gaps that surround the fate of the contaminated soil stockpile stored on-site in 2000 and residual contaminated soil under the UST that was left in-place at the site. | Bruce Wanstall |
| 12/30/2014 | Site Characterization Report Approved | DEC has reviewed: West Juneau Lift Station Site – Soil & Groundwater Investigation (Report), dated December 4, 2014. Carson Dorn Inc. (CDI) completed the Report documenting the release investigation activity at the referenced Site located on Douglas Highway at the west end of the Gastineau Channel Bridge. The Report documents the results of field and laboratory investigation into petroleum release from regulated UST systems as required by 18 AAC 78.230 - 18 AAC 78.280 and 18 AAC 78.600 - 18 AAC 78.625. The Report is hereby approved. Based on available information, CDI concludes in the Report that the concentrations for all contaminants of concern in each of the soil samples collected are below laboratory reporting limits and/or regulatory cleanup levels for the most conservative exposure pathways. No anomalies affect data usability, therefore CDI recommends a closure determination for this site. DEC concurs with the conclusions and recommendations in the Report without comment. | Bruce Wanstall |
| 12/31/2014 | Exposure Tracking Model Ranking | A new updated ranking with ETM has been completed for source area 77593 UST. Groundwater was not encountered in release investigations but may be present in the deep subsurface at the site and in the area during periods of steady rainfall, but is likely hydrologically connected to and tidally influenced by marine waters. Because it is not of sufficient quantity and quality to provide potable drinking water, the receptor of greatest concern is the receiving waters of Gastineau Channel. However, the hydrologic connection between the intermittent groundwater and fluctuating surface water is limited and disperse, due to the low permeability of the geology at the site. No discrete point discharge for sampling for water quality criteria in the waterfront area is present, and no sheens have been observed or reported. Analytical results for PAH and BTEX compounds are all below Method Two migration to groundwater soil cleanup levels. | Bruce Wanstall |
| 1/5/2015 | Cleanup Complete Determination Issued | The corrective cleanup actions to date have served to excavate and adequately remove contaminated soil from the site. Based on the information available, DEC has determined there is no longer a risk to human health or the environment and no further assessment or cleanup action is required subject to following regulatory standard conditions: 1) If disturbance is planned in any of the areas of the property described in the closure decision letter as having residual contamination, a work plan must be submitted for DEC approval prior to any such site activity begins. Any proposal to transport soil or groundwater off-site requires DEC approval in accordance with 18 AAC 78.600(h). A “site” [as defined by 18 AAC 75.990 (115)] means an area that is contaminated, including areas contaminated by the migration of hazardous substances from a source area, regardless of property ownership. 2) Movement or use of contaminated material in a manner that results in a violation of 18 AAC 70 water quality standards is prohibited. This determination is in accordance with 18 AAC 78.276(f) and does not preclude DEC from requiring additional assessment and/or cleanup action if future information indicates that this site may pose an unacceptable risk to human health or the environment. | Bruce Wanstall |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil | The more restrictive of the inhalation, direct contact, or ingestion Method Two soil cleanup levels apply to this site. Soil cleanup levels for the migration to groundwater pathway are not applicable for this site because site investigation determined that groundwater is consistently not present. The migration to groundwater soil cleanup levels are discussed in the release investigations to support the conclusion that the migration of contaminants from soil through groundwater to surface water has not occurred at the Site. |
Control Type
| Type | Details |
|---|---|
| No ICs Required |
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) |
No associated sites were found.