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Site Report: ASD Chugiak High School Emergency Generator


Site Name: ASD Chugiak High School Emergency Generator
Address: 16525 South Birchwood Loop Road, Chugiak, AK 99567
File Number: 2106.26.007
Hazard ID: 23036
Status: Cleanup Complete
Staff: ,
Latitude: 61.369300
Longitude: -149.536000
Horizontal Datum:

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

Two 500 gallon emergency generator diesel USTs were removed from service on 6/19-20/98. Three cubic feet of contaminated soil was from UST #1. Soil sampling and analyses for GRO, DRO, and BTEX were performed. All samples were below cleanup levels except for DRO contaminated soil, 1,400 mg/kg, remaining at 15.6’ bgs below former location of UST#2. No GW samples were taken.

Action Information

Action Date Action Description DEC Staff
6/10/1998 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 78069 (Added by System) David Allen
6/10/1998 Leaking Underground Storage Tank Cleanup Initiated - Petroleum * Not Assigned
6/10/1998 Site Added to Database * Not Assigned
6/17/1998 Update or Other Action Permission granted to Gilfilian Engineering to directly load and haul contaminated soil, if found, to Alaska Soil Recycling. Lynne Bush
12/9/1998 Update or Other Action A letter dated 12/7/98 received from Jeannie Carpenter this date indicated that the passive SVE system was disabled by removing the wind turbine, cutting down the pipe and plugging. All efforts will be made to ensure that there are no pathways into the building and this contaminated area will be contained. A work plan will be assembled and discussed in the near future regarding the situation. Lynne Bush
12/18/1998 Report or Workplan Review - Other Reviewed and approved the Gilfilian Engineering & Environmental Testing, Inc. "Environmental Site Assessment, Chugiak High School" dated 7/28/98, received by the department 9/10/98. Two 500 gallon emergency generator diesel USTs were removed from service on 6/19-20/98. A total of three cubic feet of contaminated soil was removed from beneath the vent pipe elbow near the building wall and no other contaminated soil was encountered at UST #1. The piping associated with this UST was removed as well. Excavation of contaminated soil beneath UST#2 went to 16’ bgs. At that point contaminated soil extended beneath the wall. Two product lines were abandoned in place due to restricted access and utility conflicts. A passive SVE pipe system was installed to a height of 8’ above grade, 3.9’ north of the masonry wall with a 6’ section of 0.02” slotted screen placed from 10-16’bgs, and capped with a wind turbine to help circulate ambient air. 32.42 tons of contaminated soil was transported to Alaska Soil Recycling for thermal remediation. Soil sampling and analyses for GRO, DRO, and BTEX were performed. All samples were below cleanup levels except for DRO contaminated soil, 1,400 mg/kg, remaining at 15.6’ bgs. The full extent of the contamination was not determined and further cleanup work is prohibited by the building foundation. No GW was encountered but suspected to be ~28’ bgs based on nearby hydrologic data. It is unknown whether GW was contaminated from this release. Action entered by Petrik. Lynne Bush
8/21/2002 Update or Other Action RECKEY has automatically been generated. Cynthia Pring-Ham
7/24/2003 Update or Other Action Site transferred from Bush to Dreyer. Amanda Dreyer
2/6/2004 Streamlined Cleanup Program Site meets criteria for Program acceptance. Bruce Wanstall
6/8/2004 Cleanup Complete Determination Issued See attached ROD dated 6-8-04 that closed this site. Action entered by Pam Clemens 1-8-09. Jim Frechione
9/8/2006 Update or Other Action File number issued 2106.26.007 (FKA L68.29). Aggie Blandford
6/4/2008 Update or Other Action Updated the latitude and longitude and Legal Description using Google Maps and MOA web resources. Bill Petrik
6/4/2008 Report or Workplan Review - Other Reviewed a copy of the R&M Consultants, Inc. 'Underground Storage Tank, Decommissioning/Site Assessment Report, Chugiak High School - Tank #3" dated 2002, received 11/13/02. This is Tank #3 for Facility ID 3108. It is the last tank removed under this facility ID. UST#3, a 1,000 gallon diesel tank was excavated and removed on 7/18/02 after it was found during renovation of the school. There was no contamination related with this tank based on investigative findings. Bill Petrik
12/31/2008 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78069 Former 500 Gallon Diesel Emergency Generator UST#2. This site was actually closed in the June 8, 2004 letter from ADEC signed by Jim Frechione. I will attach the ROD and change the status to Clenaup Complete without ICs as per the ROD. Pam Clemens

Contaminant Information

Name Level Description Media Comments
DRO Other Soil "Remaining contaminated soil could not be removed as it extended under a masonry wall enclosure that surrounds the electrical service and generator building."

Control Type

Type Details
No ICs Required

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.

Missing Location Data

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