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10. Tota' Organic Carbon Analyzers <br /> i Dohrmann model DC80 and Beckman models 915 and 915B are <br /> I <br /> available. Selection depends on matrix type and <br /> conccntration. <br /> 11. Total Organic Halide_ (TOX) Analyzers <br /> Xertex (Dohrmann) model DX20 and Oceanographic <br /> Instruments model 610 TOX analyzers for RCRA <br /> groundwater compliance monitoring are also employed as <br /> rapid screening tools for selecting samples for GC or <br /> GC/MS analysis of halogenated organics. <br /> 12. Radiochemical Counter <br /> Equipment includes an Eberline model MS-3 high <br /> voltage supply and an FC-2 internal proportional <br /> counter. Auxiliary equipiaent includes an alpha <br /> scintillation counter and special glassware for <br /> Radium 226 measurements. <br /> 13. Treatability Equi mp ent <br /> Tile Pasadena laboratory has a 700 square foot area <br /> designated for treatability studies. we have a <br /> broad array of laboratory scale equipment for evalu- <br /> ating the feasibility of various treatment processes. <br /> Equipment available includes biological reactors for <br /> activated sludge treatment; ozone generator with column <br /> contactors for oxidation treatment; various carbon, <br /> mixed--media, sand, and ion exchange columns for <br /> filtration/adsorption treatments; and paddle stirrers <br /> for flocculation treatment. <br /> 14. Hioassav Equipment <br /> Bioassays are conducted in a 200 square foot <br /> temperature-controlled environmental chamber. Three <br /> j 350 gallon aquaria provide large scale holding capacity <br /> for acclimation of test species. <br /> Routine equipment maintenance and instrument service is <br /> performed on an appropriate service schedule basis. Major <br /> instruments such as balances, gas chromatographs, atomic <br /> absorption spectrophotometers, and the GC/MS systems are <br /> maintained under manufacturer's service contracts or by in- <br /> house service technicians. Constant calibration, sensi - <br /> tivity, and response checks on a daily basis establish <br /> unscheduled service needs for analytical instruments. <br /> IV-4 <br />