| Action Date |
Action |
Description |
DEC Staff |
| 5/21/1992 |
Update or Other Action |
Oil and Hazardous Materials Incident Report Form completed by Marianne See from Jon Clark of the MOA for the MOA F.S. #9. Spill # 92-21-1-142-1. The form indicated that first knowledge of the release was 5/13/92 but the release occurred prior to this date but was unknown. |
Bill Petrik |
| 7/9/1992 |
Update or Other Action |
15 day Waiver Notice for removal of a UST was conditionally approved to Jon Clark of the MOA due to the fact that contamination was discovered. |
Ron Klein |
| 7/14/1992 |
Update or Other Action |
Notice of Release Letter sent to Jon Clark of the MOA. |
Ron Klein |
| 9/11/1992 |
Site Added to Database |
|
Former Staff |
| 9/11/1992 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
|
Former Staff |
| 9/11/1992 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77763 |
Former Staff |
| 9/24/1992 |
Offsite Soil or Groundwater Disposal Approved |
Approved the transport of ~40 c.y. of soil excavated during the removal of 2 USTs (1 diesel and 1 unleaded gasoline) to ASR for thermal processing. Anaytical results indicate DRO up to 1,700 mg/kg. |
Robert Weimer |
| 11/6/1992 |
Update or Other Action |
Received a letter this date indicating that remediation of 97.22 tons of contaminated soil from the site at ASR was completed to Cleanup Level A on 10/9/92. |
Robert Weimer |
| 11/18/1992 |
Cleanup Complete Determination Issued |
No further action is required for cleanup associated with the former UST at the site. If due to future construction activities, the small amount of petroleum-contaminated soils remaining under the utilities are uncovered, the department requests that the soils are handled and disposed of inan approved manner. in addition, appropriate site assessment and cleanup will be required in accordance with applicable state regulations. |
Robert Weimer |
| 7/24/2003 |
Update or Other Action |
Site transferred from Bush to Dreyer |
Amanda Dreyer |
| 11/1/2006 |
Update or Other Action |
File number issued 2100.26.309 (FKA L69.32). |
Aggie Blandford |
| 3/21/2007 |
Exposure Tracking Model Ranking |
Initial ETM ranking performed. |
Daniel Fremgen |
| 6/6/2007 |
Update or Other Action |
Site management transferred from Pikul to Petrik. |
Shannon Oelkers |
| 7/9/2010 |
Document, Report, or Work plan Review - other |
Reviewed a copy of the HartCrowser "Huffman Fire Station UST Closure Report" dated 9/11/92 and received 9/22/99. One, 1,000-gallon gasoline UST and one, 1,000-gallon diesel UST and associated piping were removed from the site on July 16-17, 1992. Two samples related to the gasoline UST, two samples related to the diesel UST, a sample from the gasoline tank pit and a sample from the test pit were all sampled for VPH, EPH, BTEX, and total lead. The highest detections were 19 mg/kg VPH (GRO), 220 mg/kg EPH (DRO), and 6.7 mg/kg total xylenes. |
Bill Petrik |
| 7/27/2010 |
Document, Report, or Work plan Review - other |
DEC continued review of the HartCrowser “Huffman Fire Station, Underground Storage Tank Removal” report dated 9/11/92 and received on 9/22/99. On July 17, 1992, one 1,000-gallon gasoline UST and one 1,000-gallon diesel UST were exposed, pumped, inerted, removed, and decontaminated. The resulting stockpile from the unleaded UST amounted to ~31 c.y. and the resulting stockpile from the diesel UST amounted to ~24 c.y. The USTs were in fair condition with slight oxidation on the outside surface. Staining on both USTs below the dispenser, staining on the concrete dispensers pad, and moderate to strong hydrocarbon odors in the soils near the east end of the USTs suggested that some spillage occurred associated with the pumps, tank fills, or associated piping. These soils (east wall of the excavation) were over excavated to within 2 feet of the marked water main. Soil observed from the excavations consisted of gravelly silty sand (fill). The size of the final excavation was 18 feet by 18 feet by 6.5 feet deep. On the bottom of the excavated pit is a 12-foot by 14-foot concrete pad ballast. This pad was left in place.
Information obtained from Tesoro Alaska Petroleum Company in reference to the Tesoro Filling Station on Huffman Road indicated the natural soils in the area to generally consist of gravely sand. Groundwater was at approximately 8 feet below grade and is moving in a northwesterly direction at the Tesoro site, located due north of the Huffman Fire Station site.
Following the tank removal and over excavation of the east wall, five soil samples were collected from the excavated pit. Two of the samples were collected from the west side of the pit near the end of each UST. The other three samples were collected from the east side of the pit adjacent to what had been the pump dispensers. The five samples collected directly from the excavation were located at the base of the pit (6.5 feet deep), and adjacent to the concrete anchor pad. All soil samples were submitted to North Creek Analytical for EPA Methods 8020/8015 BTEX/VPH, and EPA Method 8100 EPH analyses. Samples G-1 and G-2, collected from the west end of the excavation, did not have detectable levels of VPH, BTEX, or EPH. The soils collected from the east side of the pit from under the dispensers contained varying levels of VPH (1.8 ppm to 19 ppm), EPH (29 ppm to 220 ppm), and BTEX (0.22 ppm to 6.93 ppm).
10 field samples were collected from the unleaded spoils pile, and 7 samples were collected from the diesel tank spoils pile. The sample with the highest OVM reading from each spoils pile were submitted to the laboratory for analysis for both EPA Methods 8020/8015 BTEX/VPH, and EPA Method 8100 EPH analysis. For disposal purposes, the sample from the gasoline spoils was also submitted for total lead analysis. Laboratory results indicated elevated levels of both gasoline and diesel concentrations in each stockpile. The gasoline stockpile levels were up to 100 ppm VPH and 1,500 ppm EPH and the diesel stockpile levels were up to 88 ppm VPH and 1,700 ppm EPH.
To determine if any petroleum hydrocarbons had migrated past the water main located east of the UST excavation, one additional sample was collected from a 8.5-foot deep test pit located 4.5 feet east of the excavation (2.5 feet east of the water main), and submitted for BTEX, VPH, and EPH analyses. The soil sample did not contain detectable levels of BTEX or VPH. However, laboratory results did indicate an EPH concentration of 14 ppm in the pit.
All analytical results were ND for benzene and the MDL was at the cleanup level. The maximum toluene level was 2.0 ppm, the maximum ethyl benzene level was also 2.0 ppm, the maximum total xylenes level was 16 ppm, and the maximum total lead level was 20 mg/kg. Of the soil remaining in the excavation, only EPH exceeded the Matrix Cleanup Level B of 200 ppm at 220 ppm.
|
Bill Petrik |
| 7/27/2010 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77763 2 USTs. |
Bill Petrik |
