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TABLE 10b <br />Surface Water Short Parameter List <br />Seneca Coal Company <br />Parameter Analysis Technique Units <br />Field <br />Conductivity Direct Measurement umhos/cm <br />PH Direct Measurement units <br />Temperature Direct Measurement °C <br />Laboratory <br />Iron Total Recoverable* mg/l <br />Manganese Dissolved mg/l <br />Suspended Solids Total mg/1 <br />Total Dissolved Solids at 1B0°C Dissolved mg/l <br />* If Colorado Water Quality Control Commission changes the required analytical technique <br />for iron (for aquatic life) from total recoverable to another technique, then Seneca Coal <br />Company will do likewise. <br />Page A-24 <br />