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<br />TABLE 5 <br />Occidental Oil Shale, Inc. -Logan Wash <br />Surface Water Monitoring -STATION RC-1' <br /> Monitoring Frequency <br />Parameter <br />Weekl <br />Monthl ~ <br />uarterl ~ <br />Flow X X <br />Visible Oil & Grease° X X <br />Field pH, Conductivity, Temperature, <br />Dissolved Oxygen X X <br />Alkalinity X X <br />Total' Inorganics: Boron, Fluoride X <br />Anions: Sulfate, Chloride X X <br />Nutrients: Ammonia, Nitrate, Nitrite X <br />Total Dissolved Metals: Calcium, <br />Cadmium, Copper, Chromium VI, Iron, <br />Manganese, Magnesium, Arsenic, <br />Nickel, Lead, Silver, Zinc X X <br />Total Recoverable Metals: Arsenic, <br />Chromium III, Iron, Selenium, <br />Manganese, Mercury (Total) X X <br />Vola[iles (BTEX) X X <br />Semivolati les X <br />Footnotes: <br />' Station RC-1 is defined as Roan Creek above Logan Wash and below Conn Creek. <br />~ Monthly sampling is required year-round. <br />' Quarterly sampling for all listed parameters is to be conducted in March, June, September, and <br />December. <br />° 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\RC- l . tbl] <br />