Open AccessMiscellaneous chemical basin expedited site characterization report
Author(s) -
B. Riha,
B.E. Pemberton,
J. Rossabi
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/477703
Subject(s) - vadose zone , soil vapor extraction , groundwater , hydrology (agriculture) , environmental remediation , environmental science , structural basin , geology , water table , savannah river site , water well , diel vertical migration , contamination , radioactive waste , geotechnical engineering , waste management , geomorphology , oceanography , engineering , ecology , biology
A total of twenty nine cone penetrometer test (CPT) pushes in three weeks were conducted for vadose zone characterization of the Miscellaneous Chemical Basin (MCB) waste unit at the Savannah River Site. The shallow, unlined basin received liquid chemical wastes over an 18 year period beginning in 1956. This characterization was initiated to determine the vertical and lateral extent of contamination in the vadose zone and to install vadose zone wells for remediation by barometric pumping or active vapor extraction to help prevent further contamination of groundwater. The CPT locations within the waste site were selected based on results from previous shallow soil gas surveys, groundwater contamination data, and the suspected basin center. Geophysical data and soil gas samples were collected at twenty five locations and twenty five vadose zone wells were installed. The wells were screened to target the clay zones and areas of higher soil gas concentrations. The well construction diagrams are provided in Appendix B. Baro-Ball{trademark} valves for enhanced barometric pumping were installed on each well upon completion to immediately begin the remediation treatability study at the site