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PART I <br />Page 8 <br />Permit No. COG-850000 <br />• <br />B. EFFLUENT LIMITATIONS AND MONITORING REQUIREt~NTS <br />3. Footnotes (applicable to preceding pages) <br />a/ - The thirty (30) day average shall be determined by the arithmetic <br /> mesa of all samples collected during a thirty (30) consecutive-day <br /> period. Samples shall not be used for more than one reporting <br /> period. <br />b/ - The seven (7) day average shall be determined by the arithmetic <br /> mean of all samples taken on separate days is a seven (7) <br /> consecutive-day period. Samples shall not be used for more than <br /> one reporting period. <br />c/ - This limitation shall be determined by a single sample or set of <br /> samples as required by Part I B. 2, Sample Type. <br />d/ - When the measurement frequency indicated is quarterly, the samples <br /> shall be collected during March, .7uae, September and December, if <br /> a continual discharge occurs. If the discharge is intermittent, <br /> then samples shall be collected during the period that discharge <br /> occurs. If the permittee, using the approved analytical methods, <br /> monitors any parameter more frequently than required by this <br />• permit, then the results of such monitoring shall be included in <br /> the calculation and reporting of the values required in the <br /> Discharge Monitoring Report Form or other forms as required by the <br /> Division. Such increased frequency shall also be indicated. <br />e/ - Definitions of Sample Type <br /> 1. A "composite" sample, for monitoring requirements, is a <br /> minimum of four (4) grab samples collected at equally spaced <br /> two (2) hour intervals and proportioned according to flow. <br /> 2. A "grab' sample, for monitoring requirements, is a single "dip <br /> and take" sample. , <br /> 3. Aa "instantaneous" measurement, for monitoring requirements, <br /> is a single reading, observation, or measurement performed on <br /> site. <br />4. A "continuous" measurement, for flow monitoring requirements, <br />is a measurement obtained from an automatic recording device <br />which continually measures flow. <br />J <br />