Action Date |
Action |
Description |
DEC Staff |
9/9/1993 |
Site Added to Database |
|
Former Staff |
9/9/1993 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77753 ADD; |
Former Staff |
10/7/1993 |
Update or Other Action |
UST Closure Site Assessment, Broad Pass, Alaska submitted by Shannon & Wilson on this date. Two 1,000 gal diesel USTs were removed. The surface soil surrounding the USTs had a petroleum stain and odor. 25 to 35 cubic yards of contaminated soil was removed during tank excavations. Groundwater with an oily film/emulsion was encountered at 7 ft. bgs, but it was not know whether the water represented groundwater or surface water impoundment beneath the pad. Two soil confirmation samples collected at the depths of the excavation at 7 feet bgs indicated DRO contamination up to 18,000 mg/kg. Prior to backfilling excavation with clean fill, a ventilation gallery was installed. |
Grant Lidren |
10/9/1993 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU; LUST corrective action underway. |
Former Staff |
5/16/1994 |
Underground Storage Tank Site Characterization or Assessment |
SA1R; Documented high levels of contamination at the soil/groundwater interface. |
Former Staff |
1/28/2004 |
Update or Other Action |
Transferred DEC staff lead from John Carnahan |
Cynthia Pring-Ham |
8/4/2005 |
Update or Other Action |
File number issued 150.26.036. |
Aggie Blandford |
8/11/2005 |
Update or Other Action |
Problem statement added following site file review. No documentaion is present in the site file which would indicate cleanup has begun or has been completed. |
Sarah Cunningham |
8/11/2005 |
Update or Other Action |
Emailed ARRC contact requesting any more current information about the site. |
Sarah Cunningham |
8/19/2005 |
Update or Other Action |
ARRC returned email from 8/11/2005 indicating that no more work has been done at the site since 1993. |
Sarah Cunningham |
8/29/2005 |
Update or Other Action |
Emailed ARRC contact regarding the fate of the stockpiles generated from the removal of the two tanks-the stockpile had been lined, covered, and secured in 1993, but no records indicate that it was removed. |
Sarah Cunningham |
8/17/2006 |
Underground Storage Tank Site Characterization or Assessment |
Approved Work Plan to Excavate three test pits and collect up to six samples in the area of the 1993 excavation to confirm complete removal of impacted soil. The existing stockpile will also be screened using a PID and up to two samples will be collected. |
Bill O'Connell |
1/23/2007 |
Underground Storage Tank Site Characterization or Assessment |
Received Sub-surface Investigation Former Broad Pass Section House. ARRC excavated 4 test pits near the former USTs. Only one test pit contained contamination above cleanup levels. DRO was detected in TP 2 at 4,860 mg/kg. Stockpile was also sampled with results below cleanup levels so stockpile will be spread on site. No GW encountered in test pits. |
Bill O'Connell |
3/16/2007 |
Exposure Tracking Model Ranking |
Intial Ranking Completed |
Bill O'Connell |
6/2/2008 |
Update or Other Action |
Longitude and Latitude updated with Google Earth |
Grant Lidren |
5/8/2009 |
Site Characterization Workplan Approved |
ADEC received a Work Plan for Drainage Ditch Water Sampling Broad Pass, dated May 7, 2009, and submitted by Clarus. |
Grant Lidren |
12/3/2009 |
Document, Report, or Work plan Review - other |
On this date, ADEC received Drainage-Ditch Water Sampling Broad Pass, dated November 24, 2009, submitted by Clarus. The drainage-ditch water sample collected at the south end of the culvert, analyzed for RRO, DRO, GRO, & BTEX, was non- detect. |
Grant Lidren |
2/24/2010 |
Cleanup Complete Determination Issued |
The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program has completed a review of the environmental records associated with the ARRC - Broad Pass Railroad Station. Based on the information provided to date, the ADEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment, and no further remedial action will be required as long as the site is in compliance with established institutional controls. This decision is based on the administrative record for ARRC - Broad Pass Railroad Station site, which is located in the offices of the ADEC in Anchorage, Alaska. |
Grant Lidren |
2/24/2010 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Grant Lidren |
11/17/2010 |
Document, Report, or Work plan Review - other |
On this date ADEC received UST Removal Report Broad Pass Section House submitted by Clarus and dated October 29, 2010. During the drainage ditch sampling effort of 2009, A previously unknown 500 gallon heating oil UST was discovered. The UST was found to be partially open and submerged with water. In 2010, the UST was purged of water and removed from the site. Three soil samples collected 6 inches below the former UST, at 3.75 ft. bgs, contained benzene up to 0.387 mg/kg. The excavation was then backfilled with stockpiled soils and clean fill to bring to grade. |
Grant Lidren |
6/13/2012 |
Update or Other Action |
Staff changed from Grant Lidren to IC Unit. |
Kristin Thompson |
6/13/2012 |
Institutional Control Compliance Review |
IC review conducted and reminder system set-up for 2015 follow-up with responsible party. |
Kristin Thompson |
4/2/2015 |
Institutional Control Update |
An IC reminder letter was issued to the responsible party on this date. |
Kristin Thompson |
4/14/2015 |
Institutional Control Update |
ADEC was contacted by the responsible party in response to the IC reminder letter. There has been no change in land use or ownership at this site since the 2010 establishment of institutional controls. |
Kristin Thompson |
2/24/2023 |
Institutional Control Compliance Review |
IC compliance review conducted on this date and a reminder letter was issued. The next compliance review will be in 5yrs. |
Jennifer McGrath |