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CX-009066: Categorical Exclusion Determination

Characterization of Downgradient Volatile Organic Compounds Plume and Installation of Monitoring Well
CX(s) Applied: B3.1
Date: 07/24/2012
Location(s): South Carolina
Offices(s): Savannah River Operations Office

Three soil borings will be advanced to an estimated depth of 160 feet to characterize the distal portion of the volatile organic compound (VOC) plume down-gradient of the ABRP/MCB/MBP OU. Groundwater monitoring well MCB029B will be installed at the soil boring location with the highest VOC concentration. The monitoring well will be screened in the upper or lower Lost Lake Aquifer Zone (ULLAZ or LLLAZ). The South Carolina Department of Health and Environmental Control (SCDHEC) requested the installation of this monitoring well to support the operational suspension of the ABRP/MCB/MBP OU recirculation well system.