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<br />PARTI <br />Page IS <br />Permit No. COG-500000 <br />E. FOOTNOTES -APPLICABLE TO PRECEDING PAGES <br />g/ When the measurement frequency indicated is quarterly, the samples shall be collected during Man:h, lone, September <br />and December, if a continual discharge occurs. if the discharge is intermittent, then samples shall be collected during <br />the period that discharge occurs. If the permittce, using the approved amlytical methods, monitor., any parameter <br />more frequently than required by this permit, they the results of such monitoring shall be included in the calculation <br />and reporting of the values required in the Discharge Monioring Report Form or other forms as required by the <br />Division. Such increased frequency shall also be indicated. <br />h/ Defuvtions of Sample Type <br />1. A 'canposile' sample, for monitoring requirements, is a minimum of four (4) grab sample: collated at equally <br />spaced two (2) hour intervals and proportioned according W flow. <br />2. A 'grab' sample, for monitoring requirements, is a single 'dip and take' sample. <br />3. An 'iastanfaneous' measurement, for monitoring requirements, is a single reading, observation, or <br />measurement performed on site. <br />4. A 'contintwus' measurement, for flow monitoring requirements, is a measurement obtained from en automatic <br />recording device which continually measures Flow. <br />5. A 'visual' observation, for oil end grease monitoring requirements, is observing the discharge to chak for the <br />presence of a visible sheen or Floating oil. <br />6. An 'in-situ' measurement, for monitoring requirements, is defined as a single reading, observation or <br />measurement takes in the field at the point of discharge. <br />7. A '24 hour composite' sample is a combination of at least eight (8) sample aliquots of at bast 100 milliliters, <br />collated at equally spaced intervals during the opereting hours of a facility over atwenty-four (24) hour period. <br />For volatile pollutants, aliquots mutt be combined in the laboratory immediately before analysis. The composite <br />must be flow proportional; either the time interval betwcen each aliquot or the volume of each aliquot must be <br />proportional to either the wastewater or effluent flow at the time of sampling or the total wastewater or effluent <br />flow since the collation of the previous aliquot. Aliquots may be collated manually or automatically. <br />i/ in the event ea oil sheen or floating oil is observed, a grab ample shall be collated, analyred, end reported on the <br />appropriate DMR or amual report. In addition, corrective action shall be taken immediately to mitigate the discharge <br />of oil and grease. A description of the corrective action taken should be included with the DMR ar mnual report. <br />j/ Where, based on a minimum of 5 samples, the permittce demonstrates to the satisfaction of the Wt~ter Quality Control <br />Division that We level of total dissolved solids (TDS) in the effluent can be calculated based upon be level of elatrical <br />conductivity, the permittee may measure and report TDS in terms of elatrical conductivity. <br />GENERAL REQUIREMENTS <br />1. Representative Samolin¢ <br />Samples and measurements taken as required herein shell be representative of the volume and nature of the monitored <br />discharge. All samples shall be taken at the monitoring points spaified in this permit and, unless otherwise spaified, <br />before the effluent joins or is diluted by any other westestream, body of water, or substance. Mordtoring points shall <br />not be changed without notification to and approval by the Division. <br />