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Site Report: ASD Creekside Park Elementary School


Site Name: ASD Creekside Park Elementary School
Address: 7500 East 6th Avenue, at Creekside Street, Anchorage, AK 99504
File Number: 2100.38.405
Hazard ID: 4661
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 61.216389
Longitude: -149.742500
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 6/11-12/99 a 6,000 gallon Bunker C UST #1 and a 550 gallon diesel UST #2 were excavated and removed during construction activities. Petroleum hydrocarbon soil and groundwater contamination above cleanup levels were detected in association with the diesel UST. DRO is above cleanup levels in soil at the northwest end of the UST #2 excavation at 285 mg/kg and in MW-1 borehole at 9.5' to 11' at 267 mg/kg and in GW in MW-1 at 2.12 mg/L. MW-1 is located where the former UST #1 was located. Ground water was at ~16' bgs at time of tank removal and at ~12.5' bgs on 8/18/00. Fine grained "black sand" was found under the piping trench at the time of removal. It was analyzed and found to be coal, but the lab could not differentiate between coal, DRO or RRO. When a water line broke the "black sand" was distributed throughout the excavation. The excavation was backfilled with 'clean' material removed from the pit and imported material.

Action Information

Action Date Action Description DEC Staff
7/14/1999 Site Characterization Workplan Approved In response to review of the R&M "Environmental Work Plan, Creekside Park Elementary School, Anchorage, Alaska" dated 12/3/99 and received by the CSP on 12/17/99, and the "Revised Borehole Locations, Environmental Work Plan, Creekside Park Elementary School, Anchorage, Alaska" dated 5/15/00 and received by the department on 5/17/00, the work plan is approved. ADEC expects that a report will be submitted to this office after completion of the propsed work plan activities. Action entered by Petrik. David Pikul
7/14/1999 Site Added to Database Site added to the database. (Date adjusted from 7/17/2008 for report/query consistency. (Reese)) Bill Petrik
7/14/1999 Preliminary Assessment Approved In response to review of a copy of the R&M Consultants, Inc. (R&M) "Underground Storage Tank Excavation Report" dated 6/30/99 received by the department on 7/2/99, the CSP requested a work plan to determine the extent of the contamination that was identified along the piping run through the collection of soil sample(s) from the soil layer below the black sand layer, and advance a boring through location of the former 550 gallon tank and complete it as a monitoring well and collect soil and GW samples fpr lab analysis by Methods AK 102 and 103. Please include a site diagram that identifies the past soil sample locations, the location and dimensions of the excavated area, backfill soil information, and the proposed boring and sample collection locations. 50-60 c.y. of contaminated soil was generated during the UST removal process. Action entered by Petrik. Bill Petrik
7/26/1999 Update or Other Action A reply was sent this date to Dan Osbourne of R&M indicating that the CSP approves of the transport of 50 c.y. of DRO contaminated soil (to 1,900 mg/kg) directly to Alaska Soil Recycling for thermal treatment and disposal in a covered truck. Action entered by Petrik. David Pikul
8/24/2000 Update or Other Action A fax was sent this date to John DeGeorge of R&M indicating that the CSP has no objection to the transport of ~1.5 c.y. contaminated soil and one drum of water to Alaska Pollution Control for thermal treatment and disposal with the condition that the treatment facility is an ADEC authorized facility and the materials are containerized and covered during transport. Action entered by Petrik. David Pikul
10/2/2000 Update or Other Action A copy of the R&M "Release Investigation Report, Creekside Park Elementary School, 7500 East 6th Avenue, Anchorage, Alaska" dated 9/13/00 was received by the CSP on 10/2/00. Bill Petrik
7/17/2008 GIS Position Updated Used Google Maps in conjunction with a Site Map to obtain coordinates for former Tank 2 location. Bill Petrik
7/17/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed for the 550 gallon diesel tank. Bill Petrik
7/25/2008 Update or Other Action As of 7/18/08 the last report in the file is a copy of the R&M Release Investigation Report, Creekside Park Elementary School, 7500 East 6th Avenue, Anchorage, Alaska dated 9/13/00 that was received by the CSP on 10/2/00. On 7/14/1999 an "Environmental Work Plan, Creekside Park Elementary School, Anchorage, Alaska" dated 12/3/99 and received by the CSP on 12/17/99, and the "Revised Borehole Locations, Environmental Work Plan, Creekside Park Elementary School, Anchorage, Alaska" dated 5/15/00 and received by the department on 5/17/00, were reviewed and approved by Dave Pikul. There are no outstanding requests for work plan approvals in the file. As of the last report, DRO is above cleanup levels in soil at the northwest end of Tank 2 excavation at 285 mg/kg and in MW-1 borehole at 9.5' to 11' at 267 mg/kg and in GW in MW-1 at 2.12 mg/l. Email 7/25/08 was sent to ASD, from Bill O'Connell, requesting a work plan. Sydney Devine
9/29/2008 Update or Other Action Site transfered to Pam Clemens. Pam Clemens
9/30/2008 Meeting or Teleconference Held Bill O'Connell and I met with Edie Knapp with ASD and Aaron Banks with R&M Consulting today to discuss active Anchorage school sites. ASD Creekside Park Elementary School will have groundwater monitoring conducted by R&M in accordance with their approved workplan and will submit a report this fall. Pam Clemens
10/22/2008 Update or Other Action A letter was sent to Edie Knapp with ASD concerning this and other sites. Based on the results of the monitoring in the fall of 2008, additional activities may be necessary to delineate the extent of contaminaiton in this area. Pam Clemens
12/29/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78648 for the 6,000 gallon Buncker C fuel tank. Pam Clemens
1/23/2009 Proposed Plan Received, reviewed and approved R&M Consultants' work plan for "Closure Course Implementation" dated today. As per the email from Bill O'Connell dated 7-25-08 R&M will sample MW-1 and conduct a well search for downgradient wells within 1/4 mile of the school. If MW-1 still contains DRO above ADEC cleanup levels, it is recommended that two downgradient boreholes/monitoring wells be advanced to delineate the extent of the contamination. Pam Clemens
5/6/2010 Update or Other Action Follow-up voice mail left for Edie Knapp, Facilities Manager, Anchorage School District to see if the workplan that was approved last year was ever completed. Pam Clemens
11/15/2010 Report or Workplan Review - Other Received, reviewed and approved the Groundwater Monitoring Report, Creekside Park Elementary School; prepared by R&M Consultants, dated November 4, 2010. DRO levels in MW-1 were below the groundwater cleanup level. GRO, BTEX, and RRO were not detected. This site is being reviewed for closure. Pam Clemens
11/24/2010 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 75728 name: Former 550 Gallon Diesel UST Pam Clemens
12/7/2010 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 75728 Former 550 Gallon Diesel UST. Pam Clemens
12/7/2010 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78648 6,000 gallon Buncker C fuel tank. Pam Clemens
12/8/2010 Cleanup Complete Determination Issued Based on information provided to date and the administrative record, the ADEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment. Therefore this site will be issued a Cleanup Complete with Institutional Controls (ICs). Pam Clemens
12/8/2010 Institutional Control Record Established Institutional Controls established and entered into the database. Pam Clemens
12/30/2010 Update or Other Action Received and filed the signed: Attachment A: Cleanup Complete-ICs Agreement and Signature Page. Pam Clemens
9/27/2012 Update or Other Action On this date, ADEC reviewed the GW Well Decommissioning Report ASD Creekside Park Elementary School submitted by R&M dated September 12, 2012. MW-1, MW-2, and MW-3 were decommissioned in accordance with the November 2011 ADEC Monitoring Well Guidance. Groundwater was encountered 17.1 to 17.7 feet bgs. Grant Lidren
10/7/2014 Institutional Control Compliance Review IC compliance review conducted and staff changed from Grant Lidren to IC Unit. Reminder system set to follow-up with the responsible party in winter 2015. Kristin Brown
1/8/2016 Institutional Control Compliance Review An IC compliance review was conducted and an IC reminder letter was issued to the responsible party on this date. Reminder system set to follow-up in 2021. Kristin Brown

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
DRO < Table C Groundwater
RRO < Table C Groundwater
RRO < Method 2 Most Stringent Soil

Control Type

Type Details
Signed CS Determination

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.
When Contaminated Soil is Accessible, Remediation Should Occur
Groundwater Use Restrictions
Other

Missing Location Data

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