HollyFrontier Cheyenne Refining LLC, a subsidiary of HollyFrontier Corp., Dallas, has purchased and installed the MetalGuard™ Selenium online analyzer to measure the wastewater selenium profile at the Cheyenne Refinery, Cheyenne, Wyoming.

SafeGuard™ is an automated trace metals analyzer for monitoring municipal and industrial water and wastewater. The system provides real-time, multi-stream analysis for a range of trace metal contaminants. SafeGuard delivers accurate and reliable results (up to 1 ppb or ± 15%, whichever is higher) with a typical measurement time of fewer than 30 minutes.

The MetalGuard™ Chromium analyzer provides real-time, reliable, and accurate data on hexavalent chromium [Cr(VI)] and Total Cr contaminant levels in just 30 minutes with sensitivity down to 0.5 ppb. The fully automated online analyzer is offered with an annual service contract inclusive of a 10-year warranty.

The MetalGuard™ Selenium analyzer provides real-time, reliable, and accurate data on selenium levels, including selenite and selenate. Results are available as quick as 30 minutes or in less than two hours, with sensitivity down to 1 ppb for certain selenium species. The fully automated online analyzer is offered with an annual service contract inclusive of a 10-year warranty.

The MetalGuard™ Arsenic analyzer provides real-time, reliable, and accurate data on arsenic levels in just 30 minutes with sensitivity down to 1 ppb. The fully automated online analyzer is offered with an annual service contract inclusive of a

The Town of Tewksbury, Massachusetts, tested an aeration system for additional THM removal. The Tewksbury WTP measured real-time influent and effluent THM values using the online THM-100™ analyzer. Prior to using the online THM monitor, plant operators waited to receive analytical results from external analysis, often conservatively operating the facility since real-time THM values were not known. The real-time data provided by the online monitor made THM formation within the WTP and distribution system easy to identify.

The Brunswick & Topsham Water District (BTWD) in Maine was receiving high THM results despite implementation of best practices. The use of the THM-100™ online THM analyzer has proven a valuable tool enabling BTWD to optimize operations, better understand treatment processes, resolve THM compliance concerns and validate laboratory performance and results.

A California Water Utility experiencing elevated levels of hexavalent chromium [Cr(VI)] in their drinking water supply is the first commercial application to use the MetalGuard™ Cr(VI) real-time water quality monitor developed by AMS. The monitor was installed to provide high frequency, reliable, and accurate data on hexavalent and total chromium levels during the pilot test of a Reduction/Coagulation/Oxidation/Filtration (RCOF) process.

Scottish Water has relied on the reliability and accuracy of the online THM-100™ monitor to monitor real-time THM levels at several of its facilities. The online THM monitors have allowed Scottish Water to consistently monitor, maintain, optimize, and respond to any THM concerns promptly.

Aigües de Barcelona, the leading water utility in Spain, has received accreditation to the ISO/IEC 17025:2005 Standard for using AMS’ online THM-100™ analyzer to continuously monitor THMs in its drinking water supply network, which serves 3,000,000 million inhabitants across metropolitan Barcelona. In addition to providing the utility with contract compliance and process optimization data, THM readings can now be used to submit regulatory compliance data.