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Site Report: Chickaloon General Store

Site Name: Chickaloon General Store
Address: 34223 (mile 76.3) North Glenn Hwy.; , Sutton, AK 99674
File Number: 2257.26.001
Hazard ID: 23458
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 61.775646
Longitude: -148.488240
Horizontal Datum:WGS84

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

Four regulated 2,000 gallon USTs were removed in 1990. Soil samples collected from the excavation floor contained petroleum constituents above ADEC cleanup levels. A SA was performed in 2001 at the area of the former USTs. Soil samples collected from the sidewalls and excavation bottom at 10 ft. bgs contained benzene up to 0.152 mg/kg. In 2002, the soil was sampled again (from an unknown location) with benzene up to 0.159 mg/kg. A 2004 Interim Removal Action removed 500 cubic yards of contaminated soil. Confirmation soil samples from the excavation contained benzene contamination up to 0.139 mg/kg. The drinking water well sampled on site did not contain petroleum constituents.

Action Information

Action Date Action Description DEC Staff
9/21/1990 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 78098 ADD; Gasoline contaminant. Former Staff
9/21/1990 Site Added to Database Former Staff
9/22/1990 Underground Storage Tank Site Characterization or Assessment SA1R; :Action Date changed DB conversion 1/11/11 Former Staff
9/22/1990 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU; : LCAU date changed DB conversion Former Staff
6/17/1991 Long Term Monitoring Established MS; Sampling from excavation floor 7' below ground surface had hydrocarbons EPH of 236 ppm Method 3510/3550/8100 modified & at N excavation wall had 101 ppm EPH 5' below ground surface. Bottom of tank located at 8' so samples needed to be taken at a minim. Former Staff
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: MICHAEL & DEBRA PIETROK Former Staff
6/11/2001 Release Investigation DEC approves workplan to conduct release investigation in former tank excavation and piping run. Robert Weimer
6/25/2001 Site Visit Compliance Assistance Visit with EPA for potential buyer Red- observe staining behind Bldg at former HOT location and in front of garage door. Former floor drain discussed; no sampling prior to capping. UST issues: 1) water in sump 2) need proof of finacial resp. 3) leak detection record keeping must go to ADEC as requested in Sharon Sadlon
7/20/2001 Underground Storage Tank Site Characterization or Assessment Received SA/RI. Benzene exceeds in all 5 samples collected at the former USTs locations (0.159 mg/kg max at 8'bgs); Max GRO 20.2 mg/kg. PID screening in probes assumed to be drilled to the piping depth below the bldg floor ranged from 2.8 PID units to 0.2 units. Sharon Sadlon
7/26/2001 Update or Other Action Consultant call. DW well onsite sampled. Well ~40 feet deep. 1 1/2 'stickup with GW @ 13 1/2' initally (purged 25 min only recharged to 19' in 25 min.) Should have been sampled using SW method 524.2 for benzene at a minimum. Sharon Sadlon
8/23/2001 Update or Other Action e-mail request for DW sample results and date for RI WP to dilineate benzene in soil. Sharon Sadlon
5/8/2002 Update or Other Action File Review and info from consultant Paul Pinard: 1) 1990 UST excavation - owner excavated to 10 ft bgs without ADEC approval and spread soil around perimeter of excavation without liner, status of 1990 stockpile and 2001 stockpile?, UST status? Must sample soil 2 ft below excavation (12 ft bgs) 2) surface staining below former HOT behind bldg; 3) Water samples to address potential contam from piping beneath bldg either existing well or new MW; 4) Whaley has responsibility to inform NEW owner of current UST registration requirements LD and financial resp. insurance; 5) floor drain/crib concreted in 1970's? e-mail to EPA regarding need for SA Sharon Sadlon
5/16/2002 Update or Other Action Meetings and phone calls with RP and consultant lead to conditional approval of May 16, 2002 WP. WP provides for sampling of previously excavated soil, additional excavated soil, and limits of excavation. Approved backfilling excavation with excavated soil proir to obtaining analytical results provided that the excavation is lined. Sharon Sadlon
4/2/2004 Update or Other Action New PM (Egbejimba) review the file and responded to consultants request to use previous work plan prepared by Paul Pinard. Approval was not given to use this workplan because site conditions have changed. Staff suggested the installation of a monitoring well at the source. The on-site drinking water well and the monitoring well should be sampled for benzene. Beatrice Egbejimba
4/2/2004 Update or Other Action Property has been sold to Karolynn. Former owner ( Whaley's) are currently out of state to florida and can be reached @941) 629-9684. Staff left a message for Karolynn to contact new project manager. Beatrice Egbejimba
4/5/2004 Update or Other Action Staff discussed installation of groundwater monitoring well with RP. RP suggested the use of on-site drinking water well because of it's proximity to point of release. However RP could not provide a well log for the well. Staff made phone calls to obtain information from DEC water program. Staff also discussed undocumented stockpile located on the property with consultant Bob Braunstein. Beatrice Egbejimba
5/10/2004 Update or Other Action ADEC received laboratory results of the 2002 from Karolynn Wolfrom. Staff reviewed information and made phone calls to Karolynn regarding results. Beatrice Egbejimba
5/11/2004 Update or Other Action Staff sent letter to Karolynn Wolfrom in response to laboratory result provided 5-10-04. Staff also sent state interest letter, informing Karolynn that the state will cost recover for time spent on the site from the RP. Beatrice Egbejimba
6/4/2004 Update or Other Action ADEC reviewed an Interim Removal Action workplan for the above mentioned site. The workplan was approved with the condition that extra measures should be taken to maintain the integrity of the building. Beatrice Egbejimba
7/14/2004 Update or Other Action At the request of Karolyn Wolfrom, Frechione sent a draft NFRAP/IC and ROD to her on 7/14/04 for her review via email. Rich Sundet
11/1/2004 Update or Other Action On 11/1/04, CSP issued a letter to Ms. Wolfrom requesting information by 11/15/04 regarding the status of the draft NFRAP/IC and ROD sent to her, the stockpiles on site, the final report for 2004 cleanup activities by BGES, and a groundwater plan. Rich Sundet
12/7/2004 Document, Report, or Work plan Review - other The ADEC received Interim Removal Action dated December 2004 submitted by BGES and recieved by ADEC on this date. 500 cubic yards of benzene contaminated soil from behind the store was removed from an excavation 18 ft. wide, 49 ft. long to an avg. depth of 15 feet. and placed on a temporary liner. Because of the close proximity of the building the excavation was limited to 8 feet from the structure. Soil samples from the depths of the excavation contain benzene up to 0.139 mg/kg. Grant Lidren
1/24/2005 Update or Other Action On 1/24/05, CSP issued a letter to Wolfrom in follow-up to its 7/14/04 email on a draft NFRAP/IC letter and its 11/1/04 letter, and BGES's final report "Interim Removal Action" dated 12/04. CSP's letter requested clarification by 2/23/05 regarding the status and location of the 500 cy contamnated stockpile, location of the 33.5 cy clean stockpile that was landspread, and feedback on its draft NFRAP/IC included in its 7/14/04 correspondance to Karolyn Wolfrom. Rich Sundet
11/6/2006 Update or Other Action ON 11/6/06, DEC's Drinking Water Program approved of the facilities Class B public water system in which a new drinking water well 101 ft deep provides water supply to residents. DEC notified Wolfrom that the old well within 40 feet of the leaking UST had been disconected but could continue to operate as a monitor well to monitor contaminants from the UST for the CSP. The old monitor well when considered not needed by the CSP, needs to be abandoned per CSP regulations. Rich Sundet
7/3/2008 Exposure Tracking Model Ranking Intial ranking Completed Grant Lidren
12/9/2008 Update or Other Action Latitude and longitude coordinates updated via Google Earth Pro. Grant Lidren
1/29/2009 Update or Other Action ADEC communicated with the RP. The RP indicates that the stockpile remains on the property and are properly covered and lined. The ADEC plans on performing a site investigation of the property with the RP in the spring. Grant Lidren
5/21/2009 Site Visit ADEC site visit on this date. The onsite stockpile was found to be in excellent condition; covered, equipped with bioventing tubes, and maintained. ADEC dug 2 ft into the center of the pile. No visual or olfactory signs of contamination evident. Grant Lidren
8/28/2009 Site Visit ADEC site visit on this date to verify the stockpile was land spread per an ADEC letter dated May 27th, 2009. Stockpile found to be spread approximately 1 to 1.5 feet deep and overgrown with vegetation. Grant Lidren
12/22/2009 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program, has completed a review of the environmental records associated with the Chickaloon General Store. Based on the information provided to date, the ADEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment, and no further remedial action will be required as long as the site is in compliance with established institutional controls. This decision is based on the administrative record for Chickaloon General Store, which is located in the offices of the ADEC in Anchorage, Alaska. Grant Lidren
12/22/2009 Institutional Control Record Established Institutional Controls established and entered into the database. Grant Lidren
12/22/2009 Update or Other Action ADEC received signed CC-IC Agreement Grant Lidren
6/13/2012 Update or Other Action Staff changed from Grant Lidren to IC Unit. Kristin Thompson
7/9/2012 Institutional Control Compliance Review IC review conducted and additional details were added to the reminder system record. Evonne Reese
5/16/2013 Long Term Monitoring Complete Administrative action added during a quality control check. Kristin Thompson
1/2/2015 Institutional Control Update An IC reminder letter was issued to the responsible party on this date. Kristin Thompson
3/24/2017 Update or Other Action It was brought to our attention that land ownership of this site has changed. The affiliates information has been updated and an IC verification letter was issued to the current landowners. Kristin Thompson
5/16/2018 Institutional Control Compliance Review IC compliance review conducted. The landowner did not sign the ICs Agreement Page. Reminder system set to follow-up every five years. Kristin Thompson
2/23/2023 Institutional Control Compliance Review IC compliance review conducted on this date and a reminder letter was issued. The next compliance review will be in 2028. Jennifer McGrath

Contaminant Information

Name Level Description Media Comments
Benzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

Control Type

Type Details
Signed CS Determination

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site. Standard condition.
Other Every five years.
Groundwater Use Restrictions Groundwater wells may not be installed on site without ADEC approval.
Other ADEC recommends the former (disconnected) well inside the General Store be completely decommissioned and abandoned.
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.
Hazard ID Site Name File Number
26562 Chickaloon Trading Post USTs 5 & 6 2257.26.005

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