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Site Report: MOA City Hall - Hill Building

Site Name: MOA City Hall - Hill Building
Address: 632 West 6th Avenue, South Side Building Alley, Anchorage, AK 99501
File Number: 2100.38.074
Hazard ID: 3316
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 61.216028
Longitude: -149.895111
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 7,000 gallon heating oil tanks are present beneath a 6-inch concrete loading dock area. Preliminary investigation in mid-November 2000 include five borings within five feet of the two end-to-end tanks. Samples were taken at 10-12 feet, with one boring having up to 7,250 mg/kg DRO in soils at that depth. The other borings were clean. Groundwater is believed to be 15 or more feet deep. Previous owner through December 18, 2001 was WFS (Republic) Inc. aka Weyerhaeuser Financial Investments. Anchorage Public Private Partnership, LLC (APPP) purchased the property on December 18, 2001 as per a letter from APPP dated 9/16/2003. Legal description is Anchorage Townsite (Original) Block 69, Lot 4A.

Action Information

Action Date Action Description DEC Staff
2/27/2001 Meeting or Teleconference Held Met with building owner representative and consultant to discuss next steps. Owner wants to close tanks in place due to the numerous utilities in the area. ADEC requirements include installing a groundwater monitoring well as close as possible to the most contaminated area, and completing a well search for a 300-foot radius surrounding the tanks. Eileen Olson
3/1/2001 Site Added to Database DRO contamination. Eileen Olson
3/1/2001 Site Ranked Using the AHRM Initial ranking. Eileen Olson
5/14/2001 Update or Other Action Received work plan to remove and/or close in place two underground fuel storage tanks. Eileen Olson
6/11/2001 Site Characterization Workplan Approved Workplan received May14, 2001 approved for the removal and/or in-place closure of two underground storage tanks. The plan proposes excavating contaminated soils associated with the USTs and collecting and analyzing confirmation samples from the resultant excavation. At least one UST will be removed, and the second may be removed if necessary to access contaminated soil. Eileen Olson
8/7/2001 Update or Other Action Workplan of 8/6/01 approved for additional site characterization of groundwater and soils. Eileen Olson
11/21/2001 Update or Other Action Letter issued that is a Record of Decision and that grants NFRAP status with IC as deed notice. A minimum of one year of quarterly monitoring is required. Eileen Olson
11/21/2001 Record of Decision NFRAP/IC and ROD all in one letter of this date with deed notice attached. Eileen Olson
11/21/2001 Institutional Control Record Established Deed notice to be recorded within 60 days of receipt of letter provided with 11/21/01 NFRAP letter. Eileen Olson
11/21/2001 Long Term Monitoring Established Letter issued that is a Record of Decision and that grants NFRAP status with IC as deed notice. A minimum of one year of quarterly monitoring is required. Eileen Olson
12/1/2001 Update or Other Action Date that Notice of Environmental Contamination was recorded (DEC apparently received a copy for the first time on April 26, 2006, but the document may have been received earlier and misplaced). Eileen Olson
12/13/2001 Update or Other Action Approved plan dated 12/12/2001 for long-term monitoring. Eileen Olson
1/9/2002 Update or Other Action Received "December 2001 Groundwater Sample Results" dated 1/8/2002. This was 2nd monitoring event; results similar to baseline monitoring results of August 2001. Next monitoring scheduled for mid-March 2002. Eileen Olson
2/21/2002 Update or Other Action Email to consultant acknowledging receipt of 1/8/2002 monitoring report. Eileen Olson
3/7/2003 Update or Other Action Sampling results for quarterly monitoring for one year received; all requirements for NFRAP/IC met. Eileen Olson
9/16/2003 Update or Other Action Rec'd letter from Anchorage Public Private Partnership, LLC, owner of former City Hall/Hill Bldg. requesting response regarding whether minimum requirements for groundwater monitoring were met with the completion of four quarterly sampling events that concluded in October 200 and that were summarized in a March 7, 2003 letter. Eileen Olson
11/3/2006 Conditional Closure Approved All conditions met with respect to long-term monitoring. Issued final letter titled "Approval of Conditional Site Closure status and acknowledgement of Completion of Long-Term Monitoring requirements." The Department's "No Further Remedial Action" letter of November 21,2001 required quarterly groundwater monitoring of the three monitoring wells at the site for a minimum of one year, with the first monitoring event to take place in November or December 2001, to establish a trend in the levels of benzene, GRO, and DRO. Monitoring wells remain at the property. Eileen Olson
11/3/2006 Long Term Monitoring Complete Long-term groundwater monitoring complete as noted in letter of same date granting conditional site closure. Eileen Olson
3/29/2007 Update or Other Action Staff made the following changes to site database entries: 1-Changed action of 11/21/2001 from "Conditional Site Closure" to "Long-Term Monitoring Established" to reflect the fact that monitoring was required before final conditional site closure was granted. 2-Added "conditional site closure" and "long-term monitoring complete" actions dated 11-3-2006. Eileen Olson
4/10/2012 Update or Other Action Found deed notice in the hard file at the Anchorage office and attached document in CS database. Kristin Thompson
9/20/2012 Update or Other Action Staff changed from Eileen Olson to IC Unit. Kristin Thompson
9/27/2012 Institutional Control Compliance Review IC review conducted. Evonne Reese
3/18/2015 Institutional Control Update An IC reminder letter was issued to the responsible party on this date. Kristin Thompson
6/20/2018 Institutional Control Compliance Review IC compliance review conducted. Closure/IC Details updated. Reminder system already set for next follow-up in 2020. Kristin Thompson
8/9/2024 Institutional Control Compliance Review IC compliance review completed on this date. An IC reminder letter was issued to the landowner. The next review will be in five years’ time. Gaige Robinson

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation
DRO > Table C

Control Type

Type Details
CS Database Notation And Letter To Landowner/RP
Notice of Environmental Contamination

Requirements

Description Details
When Contaminated Soil is Accessible, Remediation Should Occur If contaminated soil become accessible in the future, through building demolition or similar activities, the property owner is required to notify the ADEC, and cleanup, transport, remediate, or dispose of the contamination in accordance with regulations applicable at that time.
Advance approval required to transport soil or groundwater off-site. Standard condition.
Other The site file does not include documentation that the three monitoring wells associated with the site have decommissioned. If the wells are still present, you may wish to retain them in the event that an additional cleanup occurs in the future, or to assess site conditions for some other purpose in the future. Please notify the ADEC in accordance with the 2001 No Further Remedial Action letter if you plan to decommission the wells.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70) Standard condition.
Periodic Review ADEC will conduct a review of site conditions every five years.

No associated sites were found.

Missing Location Data

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
TDD: 800-770-8973
Physical Location: 410 Willoughby