Home • October - 2000
About Us Contact Information Product Description TCE Monitoring System Groundwater Sampling System Monitoring Chloroform Chromium (VI) Moinitoring System HJ-100 HJ-300 Trichloroethene Optrode Detection System Features Applications Uses Theory of Operation Case Studies North Indian Bend Wash – Superfund Edwards AFB Homestead AFB Patents Signal Time Graphs Signal v Time of Optrode Signal v Time Calibration Curve Instrument Schematic Newsletters Home	October - 2000: Burge Automated Monitoring System Put to the Test The trichloroethene (TCE) automated monitoring system was installed in a ground-water well for a six month monitoring program to test long-term system viability. A monitoring well with TCE concentrations of approximately 100 parts per billion (ppb) was selected. An air compressor provides pressurized gas. A solar cell provides power to the electrical circuits and air compressor. The monitoring system automatically calibrates the TCE sensor with a blank, 30 and 60 ppb standard prior to the analysis. Split water samples were periodically collected and sent to a fixed-based laboratory (GC/MS). Table 1 compares the monitoring system with laboratory results. The study is being sponsored by EPA Office of Solid Waste (OSW), EPA Technology Innovation Office (TIO), Measurement and Monitoring in the 21^st Century (21M^2) and the Air Force Center for Environmental Excellence (AFCEE).
Test results confirm: 1. Direct correlation with laboratory analysis 2. Sensitive enough to detect changing trends in TCE concentrations 3. Specificity to determine TCE in the presence of other chlorinated hydrocarbons The testing program will continue through March 2001 with sampling every 30 days.
The Multi-Level Sampling System Tested by ETV Program The sampling module used for collecting and conveying samples to the analytical unit of the monitoring system was tested by the ETV Program. The tests were conducted in August 1999, at Stennis NASA Facility, Alabama. The results of the study will be available soon. The module is designed to collect representative water samples from four distinct levels in a monitoring well and transport the samples to the surface. For more Information, contact Scott Burge or David Hoffman. Burge Environmental, located in Tempe, Arizona, develops and manufactures innovative field instruments for ground-water monitoring. Products include a multi-level sampler, an automated, real-time TCE sensor and sampling system and a field portable TCE unit. The multi-level sampling unit successfully completed the ETV testing program. The automated real-time TCE system is undergoing field trials at Homestead, Florida. These proprietary instruments are covered by patents and patents pending.
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