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<br />TABLE 7 <br />Occidental Oil Shale, Inc. -Logan Wash <br />Constituent List For RETORT AND MINE <br />Water Quality Monitoring <br /> Monitoring Frequency <br />Parameter <br />Weekl ' <br />Bi-Weekl a <br />Monthl ~ <br />uarterl ° <br />Flow (if possible) X <br />Total Dissolved Solids X <br />Total Suspended Solids X <br />Chemical Oxygen Demand X <br />Biochemical Oxygen Demand X <br />Visible Oil & Grease` X <br />Field pH, Conductivity, Temperature, <br />Dissolved Oxygen X <br />Alkalinity X <br />Total° Inorganics: Boron, Fluoride X <br />Anions: Sulfate, Chloride X <br />Nutrients: Ammonia, Nitrate, Nitrite X <br />Total Dissolved Metals: Calcium, <br />Cadmium, Copper, Chromium V I, Iron, <br />Manganese, Magnesium, Arsenic, <br />Nickel, Lead, Silver, Zinc X <br />Total Recoverable Metals: Arsenic, <br />Chromium TII, Iron, Selenium, <br />Manganese, Mercury (Total) X <br />Volatiles (BTEX) X <br />Semivola[iles X <br />Footnotes: <br />' Weekly sampling is required from March through June, for at least one full snowmel[ season. <br />Biweekly monitoring performed for next four months (remainder of summer field season). <br />' Monthly sampling is required from July through February. <br />' Quarterly sampling for all listed parameters is to be conducted in March,lune, September, and <br />December. <br />s If a visible sheen is observed, a sample should be taken. <br />° Boron and fluoride listed as total recoverable in State standards; actually sampled for total. <br />[p:\oxy\logan\retort.tbl] <br />