Division of Spill Prevention and Response

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Four Corners Country Store

 

Incident location map. Summary Date: July 2003 View detailed information from database on this site.arrow
Status: Active Database Name: Four Corners Country Store
Location: Mile 4.5 Palmer-Wasilla Highway, Palmer, AK Latitude/Longitude: See database
DEC Contaminated Sites Contact: Todd Blessing , Project Manager - 907-269-7699
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Map of area.

Description

 

The Four Corners Country Store site is located on Lot 19, Block 1, Winding Brook Estates, Mat-Su Borough. Four operational underground storage tanks (USTs) were removed in April of 1993. During this excavation, 150 to 200 cu. yds of contaminated soil was removed and stockpiled onsite. Shortly after the UST excavation, benzene was detected in the facility’s drinking water well. In December of 1993, an additional 350 cu. yds of contaminated soil was removed and again stockpiled onsite; however, contaminated soil beneath the Four Corners Country Store was left in place. In 1995, the Four Corners Country Store was moved to the east in order to remove contaminated soil located beneath the building. In 1997, DEC approved the onsite landspreading of stockpiled soil. Since 1993, groundwater and drinking water wells have been monitored for petroleum constituents. The data indicates that groundwater contaminant concentrations have not significantly declined a nd contaminant concentrations in certain monitoring wells still exceed state regulatory levels. The facility continues to receive grants through the State of Alaska Financial Assistance Program to fund cleanup activities.

 


Public Health and Environmental Concerns

 

The contaminants of concern (COCs) are primarily petroleum; diesel and diesel components (BTEX). Petroleum contaminated soil remains on property. Extensive impacts to the groundwater have been identified both on and off property. Shallow and deeper drinking water wells are present in the area, however, no contamination of drinking water wells has been documented. The extent of any confining aquiclude in the area has not been defined.The contaminants of concern (COCs) are primarily petroleum; gasoline and gasoline components (BTEX). Petroleum contaminated soil remains on property. Extensive impacts to the groundwater over Table C levels have been identified both on and off property. The adjacent residential wells have been impacted by low levels of petroleum contamination.

 


Current Status

 

In the spring of 2003, a pilot in situ groundwater treatment strategy will be implemented in order to facilitate natural degradation of petroleum constituents in groundwater. If this system proves to be beneficial, it will be fully implemented.