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<br />E. FOOTNOTES -APPLICABLE TO PRECEDING PAGES <br /> <br />PARTI <br />Page 15 <br />Permit No. COG-500000 <br />g/ Whm the measurement frequency indicated is quarterly, the eaaWles aball be collected during March, June, 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 permittee, using the approved analytical methods. monitors nay parameter <br />more frequently than required by this permit, then the results of such monitoring shall be included in the calculation <br />and reporting of the values required is the Discharge Monitoring Report Form or other forms as required by the <br />Division. Such increased frequency shall also be indicated. <br />h/ Definitions of Sample Type <br />1. A 'composite' sample, for monitoring requirements, is a minimum of four (4) grab samples collected at equally <br />spaced two (2) hour intervals and proportioned according to flow. <br />2. A "grab" sample, for monitoring requirements, is a single 'dip and take' sample. <br />3. An "insfaataneous" ~~m~Rment, for monitoring requirements, is a single reading, observation, or <br />measurement performed on site. <br />4. A 'continuous' measurement, for flow monitoring requirements, is a +~+Pam~rPmmt obtained from an automatic <br />recording device which continually measures flow. <br />5. A "visual' observation, for oil and grease monitoring requirements, is observing the discharge to check for the <br />preamce of a visible sham or floating oil. <br />6. An "in-situ' measurement, for monitoring requirements, is defined u a single reading, observation or <br />nwna„mment taken in the field at the point of discharge. <br />7. A "Z4 hour composite' sample is a combination of at least eight (B) sample aliquots of at least 100 milliliters, <br />collected at equally spaced intervals during the operating hours of a facility over atwenty-four (24) hour period. <br />For volatile pollutants, aliquots must be combinod in the laboratory immediately before analysis. The composite <br />must be flow proportional; either the time interval between 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 collection of the previous aliquot. Aliquots may be collected mmually or automatically. <br />i/ In the event en oil sham or floating oil is observed, a grab e~ample shall be collected, amlyzed, and reported on the <br />appropriate DMR or amual report. In addition, corrective cation shall be taken immediately to mitigate the discharge <br />of oil end grea9e. A description of the corrective action taken should be included with the DMR or amual report. <br />j/ Where, based on a minimum of 5 samples, the permittx demonstrates to the satisfaction of the Water Quality Control <br />Division that the level of total dissolved solids (TDS) in the effluent can be calculated based upon the level of electrical <br />conductivity, the permittee may measure and report TDS in terms of electrical conductivity. , <br />F. GENERAL REQUIREMENTS <br />Reoressentative Sampling <br />Samples and +~+P~p~Rments taken ae requirod herein shall be repreaeafative of the volume and nature of the monitored <br />discharge. All samples shall be taken at the monitoring points specified in this permit end, unless otherwise specified, <br />before the effluent joins or is diluted by any other wastestream, body of water, or substance. Monitoring points shall <br />not be chmged without notification to and approval by the Division. <br />