| Action Date |
Action |
Description |
DEC Staff |
| 8/8/1997 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST site created in CSP database for source area ID 78453, 500 Gallon Waste UST Facility ID 1448-1. |
Lynne Bush |
| 8/8/1997 |
Site Added to Database |
New site; John Clark; 343-8257 |
Lynne Bush |
| 11/20/1997 |
Update or Other Action |
The ADEC sent a "Notification of Intent to Cost Recover Letter" to the Municipality of Anchorage FMD. |
Lynne Bush |
| 2/28/2001 |
Update or Other Action |
The ADEC sent a letter to Jon Clark indicating the need to reassign identification information at the Tudor Road facilities. |
Lynne Bush |
| 6/19/2001 |
Update or Other Action |
Note: Will work with the MOA to re-assign facility and event identification numbers at the Tudor Road facilities in July 2001. |
Lynne Bush |
| 10/8/2002 |
Offsite Soil or Groundwater Disposal Approved |
Approved spreading of relatively uncontaminated (below action levels) stockpile north of the storage lot. Also approved transport and thermal remediation of soil at ASR. |
Lynne Bush |
| 7/24/2003 |
Update or Other Action |
Site transferred from Bush to Dreyer |
Amanda Dreyer |
| 4/28/2004 |
Update or Other Action |
Cost recovery bill package sent to project manager. |
Jeff Foster |
| 12/18/2006 |
Update or Other Action |
File number issued 2100.26.318 (FKA L69.50). |
Aggie Blandford |
| 4/10/2007 |
Exposure Tracking Model Ranking |
Initial ETM ranking of 500-gallon waste oil UST, Facility ID 1448-1 performed. |
Daniel Fremgen |
| 6/6/2007 |
Update or Other Action |
Site management transferred from Pikul to Petrik. |
Shannon Oelkers |
| 6/12/2009 |
Site Visit |
During a Site visit on this date, it was noted that the site address changed from 3650 C East Tudor Road to 3601 Dr. Martin Luther King Jr. Avenue. |
Bill Petrik |
| 6/12/2009 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
Retroactive database QC entry on 10/1/09. |
Bill Janes |
| 7/31/2009 |
Document, Report, or Work plan Review - other |
Reviewed the Shannon & Wilson, Inc. “UST Closure Assessment, Municipality of Anchorage, Public Works Communication Shop, 3650 C East Tudor Road, Anchorage, Alaska” dated July 1997, received 9/29/97. A 500-gallon waste oil UST (ADEC UST Facility ID 1448, Tank 1) installed in 1978, and associated piping were removed on June 26, 1997, cleaned, and taken to Alaska Metals Recycling for disposal and recycling. The UST was used to store waste oil from an oil/water separator likely housed inside the Communications Shop. No holes were observed in the UST upon removal. The distance from the building to the nearest tank edge was ~4’. The top of the tank was 4.5’ bgs and the bottom at 8.5’bgs. The total depth of the excavation was 8.5’. Approximately 29 c.y. of potentially contaminated soil was excavated and placed on a 10-mil reinforced liner.
All laboratory samples were submitted for analysis of residual-range organics (RRO), diesel-range organics (DRO), gasoline-range organics (GRO), and benzene, toluene, ethylbenzene, and total xylenes (collectively known as BTEX). One sample each from the stockpile, UST excavation, and piping excavation was tested for polychlorinated biphenyls (PCBs) halogenated volatile organics (HVO), and metals. Analytical test results detected contamination in all samples. The two stockpile samples had no exceedances of the soil cleanup levels. However, tetrachloroethylene (PCE) was detected at 0.024 mg/kg which is the 2009 cleanup level. The stockpile was subsequently used as backfill of the excavation.
Sample results from soil remaining in the former UST excavation exceeded the cleanup levels for GRO, DRO, and PCE. The maximum results for all samples for these three analytes, in mg/kg, were 3,000, 1,800, and 0.039, respectively. All benzene, PCB, and HVO results other than PCE and 1,2-dichlorobenzene were ND. However, the CSP notes that the PQL for one benzene sample was above the cleanup level of 0.025 mg/kg at 0.027 mg/kg. Based on the ND results for GRO and BTEX, and the low levels of RRO and DRO in this specific sample, the CSP extrapolates that benzene is probably not above its soil cleanup level. The maximum values for arsenic, cadmium, total chromium, and lead, in mg/kg, were 5.5, ND, 26, and 5.5, respectively, which are all considered within area background levels. Based on these sampling results the stockpile was used to backfill the excavation.
GW was not encountered in the excavation and is estimated to be between 15 and 20’ bgs. The nearest public well is located one mile southwest and the nearest private well is located ~1,750’ west. |
Bill Petrik |
| 7/31/2009 |
Update or Other Action |
LUST site created in CSP database for source area 78807, 500 Gallon Waste UST Facility ID 1448-1. |
Bill Petrik |
| 8/18/2009 |
Update or Other Action |
Created a new site for UST Facility ID 1448 Tank 1. Separated it from a site that contained both USTs Facility ID 1448 Tanks 1 & 2. |
Antoine Doiron |
| 9/4/2009 |
Update or Other Action |
The Contaminated Sites Program (CSP) reviewed the site file and sent a letter to the responsible party of the MOA - Maintenance Support Division Communications Shop - UST 1448-1 in Anchorage. The last characterization work reported to the CSP indicates that soil contamination above cleanup levels for diesel-range organics (DRO), gasoline-range organics (GRO), and tetrachloroethylene (PCE) remained at the site. Further soil excavation to remove remaining contaminated soil in the area of the where contaminants were reported above cleanup levels in the UST excavation is not practicable due to the proximity to critical on-site utilities as well as it would jeopardize the foundation of the nearby building. Groundwater information has not previously been collected from this site. Data suggest the possibility that contamination from this site has traveled via the unconfined aquifer northward to the vicinity of the Paratransit Addition. Further characterization is required to determine this possibility. The CSP requested a work plan within 60 days for the drilling, logging, and sampling of three borings surrounding the former UST location and installation of three monitoring wells to determine groundwater flow direction and gradient, and to determine the lateral extent of site contamination. Soil and groundwater sampling will be for residual-range organics (RRO), DRO, GRO, volatile organic carbons (VOC), and halogenated volatile organics (HVO). Polycyclic aromatic hydrocarbons (PAH) may be requested pending the findings of the laboratory analytical sampling results of hydrocarbons. A blind duplicate of each media was requested, as well as Laboratory Data Review Checklists and a conceptual site model as part of a subsequent report. (Petrik) |
Bill Petrik |
| 4/11/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78807 500 Gallon Waste UST 1448-1. |
Joshua Barsis |
| 5/27/2015 |
Meeting or Teleconference Held |
Meeting with RP representative and RP consultant regarding path forward for site. |
Lisa Krebs-Barsis |
