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STANDARD PROVISIONS <br /> SID REPORTING REQUIREMENTS ®7 <br /> E. Definitions (continued) Qi <br /> In which N is the number of samples analyzeinany c calendar <br /> rat on. (mg/1 )a <br /> Ci are the flow rate (MGD) and the constituent <br /> respectively, which are associated with each of the N grab samples which <br /> may be taken in any calendar .day. I� a composite sample is taken, Ci is <br /> the concentration measured in the cc:noosite sample and Qi is the average <br /> flow rate occurring during the period over which samples are composited. <br /> 2. The "30-day, or 7-day average" dischar a is the total discharge by weight <br /> during a 30, or 7 consecutive ca enaar day period, respectively, divided <br /> by the, number of days in the period that the facility was discharging. <br /> Where less than daily sampling is required by this Order, the 30-day, or <br /> 7-day average discharge shall' be determined by the summation of all the <br /> measured discharges by weight divided ywhe�r the emeasudays <br /> rementsduring <br /> we a hmade. <br /> or 7 consecutive calendar day period <br /> For other than 7-day or 30-day periods, compliance shall be based upon the <br /> average of all measurements made during the specified period. -If fewer <br /> than four measurements are made during the period, compliance shall be <br /> based upon the last four consecutive samples. S <br /> 3. The "30-day, or 7-day average" concentration, is the arithmetic mean of <br /> measurements made during a 30, oho utive calendar day period, <br /> respectively. <br /> 4. The "daily maximum" d i scharge means the total discharge by weight during <br /> any calendar year. <br /> 5. The "daily maximum" concentration isdefined as the measurement made on <br /> any single discrete sample or composite <br /> e sample. <br /> 6. A "grab " sample is defined by any individual sample collected in. less <br /> than 15 minutes. <br /> 7. Unless otherwise. specified, a composite sample is a combination of indi . <br /> vidual samples collected over the specified sampling period; <br /> (a) at equal time intervals, with a maximum interval of one hour <br /> (b) at varying time intervals (average interval one <br /> hour <br /> or lessfive flowhat <br /> each sample represents an equal portion of <br /> ring <br /> The duration of the sampling <br /> period <br /> ofshall <br /> compositngshaspecified llbethe repo®Led®with <br /> and Reporting Program. The method <br /> the results. <br />