PUBLIC NOTICE | Proposed Leaking UST Case Closure for Former Laughlin/Bullhead City International Airport Fuel Facility Case File No. 0722.02
ADEQ is considering closure of the following leaking underground storage tank (LUST) case:
LUST Case File No.: 0722.02
Facility ID No.: 0-000792
Former Laughlin/Bullhead City International, Airport Fuel Facility
600 North Highway 95
Bullhead City, Arizona 86429
This undeveloped land is located at 600 North Highway 95 in Bullhead City. The property is surrounded by commercial businesses including a Sam’s Club with a fueling center. The property is owned by the Mohave County Airport Authority which is also the UST owner/operator. Site investigations were initiated in May 1989. ADEQ assigned LUST release numbers 0722.01 and .02 in May 1989 for UST #4 and #5 respectively. Between 1990 and 2003, four monitoring wells were installed. In 2004, three additional monitoring wells were installed. In 2005, eight USTs, dispensers and piping were removed and the site building and canopy were demolished. The existing monitoring and remediation wells were all removed to accommodate site redevelopment. LUST releases .03-.09 were assigned in 2006. Nine monitoring wells which include MW-P5 were installed in 2006. Eight additional monitoring wells were installed in 2007. The remaining open LUST releases were characterized in 2007. Seven of the nine LUST releases were closed in 2012 and 2013. LUST release 0722.09 was closed in March 2017. Ten wells (monitoring wells and remediation wells) were abandoned in 2013.
Historic active remediation included air sparge (AS) and soil vapor extraction with air sparge (VE/AS). Active remediation was stopped due to the limited cost-effectiveness of the system. The groundwater has also been treated with oxygen-releasing compound (ORC) and BOS-200®.
The post remediation groundwater data shows that the volatile organic compound (VOC) concentrations have significantly decreased so that the only VOC contamination remaining on site is in monitoring well MW-P6. The only remaining VOC in concentrations that exceed an applicable regulatory standard is benzene.
A site specific risk assessment and detailed file/information search have been completed. Based upon the results of remedial activities and site specific information, the above-referenced LUST site is eligible for alternative LUST closure under Arizona Revised Statutes (A.R.S.) §49-1005(E). Arizona Administrative Code (A.A.C.) R18-12-263.04 allows case closure of a LUST site with groundwater contamination above the Aquifer Water Quality Standard (AWQS) or Tier 1 Corrective Action Standards.
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Public Comment Period
Dates: March 23, 2018 – April 23, 2018
Comments may be submitted as follows:
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By Mail (Must be postmarked or received by April 23, 2018):
Waste Programs Division
1110 W. Washington Street
Phoenix, AZ 85007
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