Site Report: ASD Lake Otis Elementary School
| Site Name: | ASD Lake Otis Elementary School |
|---|---|
| Address: | 3331 Lake Otis Parkway, at West Campus Drive, Anchorage, AK 99508 |
| File Number: | 2100.38.394 |
| Hazard ID: | 4665 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 61.190833 |
| Longitude: | -149.836667 |
| Horizontal Datum: | NAD83 |
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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
One 750 gallon diesel and one 10,000 gallon Bunker C USTs used for heating purposes were excavated and removed in early June 1990. Observed obvious overfill evidence around the Bunker C tank. Soil sample reults ranged up to 640 mg/kg TPH in boreholes. Contaminated soil left in ground as extent of excavation is limited due to proximity of existing foundation. Backfilled with clean fill as no further excavation is safely possibly. GW not encountered in drilling to 21.5 feet bgs. A Record of Decision was issued on 11-21-08 with a Cleanup Complete without Institutional Controls determination. No further excavation is possible and the soils with the highest remaining contamination (410 mg/kg TPH between 10 and 20 feet bgs) were covered with clean fill and capped with concrete.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 6/5/1990 | Site Characterization Workplan Approved | Reviewed and approved the Tetra Tech, Inc. "Initial Corrective Action Plan, Rogers Park, Lake Otis, and Abbott Loop Elementary Schools Underground Storage Tank and Contaminated Soil Removal" dated 5/25/90 and received by ADEC on 5/29/90. The work plan was requested on 5/21/90. One 750 gallon diesel and one 10,000 gallon Bunker C USTs used for heating purposes are scheduled for excavation and removal. Action entered by Petrik. | Jennifer Roberts |
| 6/29/1990 | Update or Other Action | Approval granted to dispose of contaminated soil at Anchorage Sand and Gravel. A sampling result of 796 mg/kg HVOC was detected. Follow up on this result was requested. Action entered by Petrik. | John Halverson |
| 9/10/1990 | Update or Other Action | Received a letter this date from AS&G indicating that 534.24 tons of fuel stained soils received from Lake Otis Elementary School were processed on 7/25/90 and sampling results show soils below cleanup levels. The soils will be used as a black base material. Action entered by Petrik. | Ron Klein |
| 7/21/2008 | Site Added to Database | Site added to the database. | Bill Petrik |
| 7/22/2008 | Site Characterization Report Approved | Review of the report received 5/29/90 from Tetra Tech, Inc. indicated that 4 boreholes were drilled and samples collected from depths of 10-11.5 feet and 20-21.5 feet bgs in each of the boreholes. Letter concerning Lake Otis is dated 4/19/90. No GW was encountered. TPH was detected in at one of two samples from each borehole at concentrations ranging from 17 to 640 mg/kg TPH. The lateral and vertical extent of the contamination is unknown. Sampling results suggest that there may be two source areas and migration appears to be northwest. Further removal and disposal of contaminated soil is recommended. | Bill Petrik |
| 7/22/2008 | GIS Position Updated | Used Google Maps in conjunction with a Site Map to obtain coordinates for a centroid location of both tanks combined. Unsure whether the coordiantes are at the correct location. | Bill Petrik |
| 7/22/2008 | Exposure Tracking Model Ranking | Initial ranking with ETM completed. | Bill Petrik |
| 9/30/2008 | Meeting or Teleconference Held | Meeting with Edie Knapp with ASD Facilities, their consultant Aaron Banks with R&M Consultants, ADEC staff Bill O'Connell and Pam Clemens to discuss open sites. | Pam Clemens |
| 10/22/2008 | Update or Other Action | Sent out a letter to Edie Knapp with ASD concerning this site. The file will be reviewed for possible closure. | Pam Clemens |
| 11/21/2008 | Exposure Tracking Model Ranking | A new updated ranking with ETM has been completed for source area 75732 750 Gallon Diesel and 10,000 Gallon Bunker C USTs. | Pam Clemens |
| 11/21/2008 | Cleanup Complete Determination Issued | ROD Cleanup Complete without Institutional Controls letter sent to Edie Knapp for: ASD Lake Otis Elementary School - see attachments | 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.