Site Report: ASD Abbott Loop Elementary School
| Site Name: | ASD Abbott Loop Elementary School |
|---|---|
| Address: | 8427 Lake Otis Parkway, at East 84th Avenue, Anchorage, AK 99507 |
| File Number: | 2100.38.396 |
| Hazard ID: | 4664 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 61.143889 |
| Longitude: | -149.832222 |
| Horizontal Datum: | NAD83 |
|  |
 |  |
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
On 3/12/90 a 5,000 gallon (Tank 1) and ~672 gallon diesel USTs(Tank 2) were excavated and removed. Initial sampling results, from excavated soils collected on March 12, 1990 indicated the total petroleum hydrocarbons (THP) contamination ranged from 59 mg/kg in Sample 4 at 12 to 13.5 feet below ground surface (bgs) to 2,000 mg/kg in Sample 1 at 6 to 7.5 feet bgs. Groundwater was not encountered in the deepest borehole at 13.5 feet bgs. The contaminated soil was removed to a stockpile on site while a determination for disposal was being made. Eight confirmation samples taken from the excavation pit, analyzed on June 29, 1990 showed the TPH levels to range from non-detect (ND) to 27 mg/kg. Four confirmation samples were taken from the stockpile and the results of the TPH contamination ranged from ND to 110 mg/kg. One sample taken from the stockpile was analyzed and reported to be ND for BTEX, halogens and PCBs. The testing of the soils for arsenic, chromium, and lead did not indicate elevated concentrations for these elements relative to the background soils. No groundwater was encountered during the June 1990 sampling. Based on the results of the confirmation samples the excavation was backfilled with clean materials and approval to use the stockpiled soils as the base course of the parking lot and driveway paving was granted by ADEC on August 17, 1990. Record of Decision dated 11-21-08: Cleanup Complete without Insitiutional Controls.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 4/13/1990 | Site Characterization Report Approved | Reviewed a copy of the Tetra Tech, Inc. report "Abbott Loop Elementary School - Soil Sampling" dated 3/26/90 received by the department on 3/30/90. On 3/12/90 a 5,000 gallon (Tank 1) and ~672 gallon diesel USTs (Tank 2) were excavated and removed. Sampling results indicated TPH contamination up to 2,000 mg/kg in Sample 1 from 6-7.5 feet bgs. GW not encountered in the deepest borehole to 13.5 feet bgs. Action added by Petrik. | Ron Klein |
| 4/13/1990 | Cleanup Plan Approved | After review of the Tetra Tech, Inc. (TT) report "Abbott Loop Elementary School - Soil Sampling" dated 3/26/90 received by the department on 3/30/90 and the TT "Initial Corrective Action Plan, Rogers Park, Lake Otis, and Abbott Loop Elementary Schools Underground Storage Tank and Contaminated Soil Removal" dated 5/25/90, a draft letter was composed this date to the ASD indicating that the levels of petroleum hydrocarbon contamination are sufficiently high enough to require remedial action under Alaska Statutes and finding the plan adequate to begin pursuit of corrective action activities. Action entered by Petrik. | Ron Klein |
| 8/29/1990 | Cleanup Plan Approved | The department received a cover letter and a copy of the Tetra Tech report "Abbott Loop Elementary School - Contaminated Soil Sampling and Disposal" dated 7/18/90 received by the department on 8/29/90. Based on sampling results indicating removal of contaminated soil exceeding cleanup levels, backfill of the excavation pit with clean material was approved on 7/2/90. The maximum sampling result was 27 mg/kg TPH. One sample of the stockpiled contaminated soil exceeded cleanup levels but was approved to be used as the base course of the parking lot and driveway paving. Action enetered by Petrik. | Jennifer Roberts |
| 7/21/2008 | GIS Position Updated | Used Google Maps in conjunction with a Site Map to obtain coordinates for a centroid location of both tanks combined. | Bill Petrik |
| 7/21/2008 | Site Added to Database | Site added to the database. | Bill Petrik |
| 7/21/2008 | Exposure Tracking Model Ranking | Initial ranking with ETM completed. | Bill Petrik |
| 10/3/2008 | Meeting or Teleconference Held | Meeting with Edie Knapp from ASD, Aaron Banks from R&M Consulting, Bill O'Connell and myself on 9-30-08 discussed this site. | Pam Clemens |
| 10/22/2008 | Update or Other Action | Sent out letter to Edie Knapp with ASD. Based on data from the further excavation by Tetra Tech in July 1990, confirmation samples were below ADEC action levels. ADEC will review this site for closure. | Pam Clemens |
| 11/6/2008 | Exposure Tracking Model Ranking | A new updated ranking with ETM has been completed for source area 75731 672 Gallon and 5,000 Gallon Diesel USTs. | Pam Clemens |
| 11/21/2008 | Cleanup Complete Determination Issued | Cleanup Complete without Institutional Controls ROD letter went out to ASD. | Pam Clemens |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | < Method 2 Most Stringent | Soil |
Control Type
| Type | Details |
|---|---|
| No ICs Required |
Requirements
| Description | Details |
|---|---|
| Advance approval required to transport soil or groundwater off-site. |
No associated sites were found.