Laserfiche WebLink
PART I <br /> Page 2 of 19 <br /> C. FOOTNOTES - APPLICABLE TO PRECEDING PAGES <br /> a/ - The thirty (30) day average shall be determined by the arithmetic mean <br /> of three (3) sampl s collected in separate calendar weeks during a <br /> thirty (30) consecotive-day period with a minimum of 20 days occurring <br /> ___--between the first-and--last-sample-days----. -�--- �-z�— <br /> b/ - The seven (7) day average shall be determined by the arithmetic mean of <br /> a minimum of three samples taken on separate days in a seven (7) day <br /> period. <br /> c/ - This limitation shall be determined by a single sample or set of <br /> samples as required by Part I B, Sample Type. <br /> d/ - When the measurement frequency indicated is quarterly, the samples <br /> shall be collected during March, June, September and December, if a <br /> continual discharge occurs. If the discharge is intermittent, then <br /> samples shall be collected during the period that discharge occurs. If <br /> the permittee, using the approved analytical methods, monitors any <br /> parameter more frequently than required by this permit, then the <br /> results of such monitoring shall be included in the calculation and <br /> reporting of the values required in the Discharge Monitoring Report <br /> Form or other forms as required by the Division. Such increased <br /> frequency shall also be indicated. <br /> e/ - Definitions of Sample Type <br /> 1. A "composite" sample, for monitoring requirements, is a minimum of <br /> four (4) grab samples collected at equally spaced two (2) hour <br /> intervals and proportioned according to flow. <br /> 2. A "grab" sample, for monitoring requirements, is a single "dip and <br /> take" sample. <br /> 3. An "instantaneous" measurement, for monitoring requirements, is a <br /> single reading, observation, or measurement performed on site. <br /> 4. A "continuous" measurement, for flow monitoring requirements, is a <br /> measurement obtained from an automatic recording device which <br /> continually measures flow. <br /> 5. A "visual" observation, for oil and grease monitoring requirements, <br /> is observing the discharge to check for the presence of a visible <br /> sheen or floating oil. <br /> 6. An "in-situ" measurement, for monitoring requirements, is defined <br /> as a single reading, observation or measurement taken in the field <br /> at the point of discharge. <br /> Code: i - 16 Date: 1 - $4 <br /> Revised 10/$6 <br />