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PART I <br />Page 9b <br />Permit No. CO-0044776 . <br />B. MONITORING REQUIItEbIENTS <br />3. Biosolids Parameters (continued) <br />e) Records (continued) <br />(ii) Records of monitoring information shall include the: 1) date, enact place, and time of sampling or <br />measurements and the initials or name(s) of the individual(s) who performed the sampling or measuremet <br />2) date(s) and times analyses were performed; 3) initials or name(s) of individual(s) who performed the <br />analyses; 4) references and written procedures, when available, for the analytical techniques or methods <br />used; and 5) results of such analyses, including the bench sheets, ins[ntment readouts, computer disks or <br />tapes, etc., used to determine these results. . <br />(iii) The permittee shall retain records of all monitoring information, including all calibration and maintenance <br />records and all original strip chart recordings for continuous monitoring instrumentation, copies of all <br />reports required by this permit and records of all data used to complete the application for this permit for <br />the life of the permit. Data collected on site, copies of Biosolids Report forms, and a copy of this permit <br />must be maintained on site doting the duration of activity at the permitted location. <br />C. DEFINITIONS OF TERMS <br />1. "Composite" sample is a minimum of four grab samples collected at equally spaced two hour intervals and <br />proportioned according to flow. <br />2. "Continuous" measurement, is a measurement obtained from an automatic recording device which continually <br />measures provides measurements. <br />-;r <br />3. "Daily Mazirnum limitation" means the limitation for this pazameter shall be applied as an instantaneous maximum <br />(or, for pH or DO, instantaneous minimum) value. The instantaneous value is defined as the analytical result of a~ ~; <br />individual sample. DMRs shall include the maximum (and/or minimum) of all instantaneous values within [he <br />calendaz month. Any instantaneous value beyond the noted daily maximum limitation for the indicated parameter <br />shall be considered a violation of this permit. <br />4. "Grab" sample, is a single "dip and take" sample so as to be representative of the pazameter being monitored. <br />5. "In-sim" measurement is defined as a single reading, observation or measurement taken in the field at the point of <br />dischazge ~ analy2ed in the laboratory within a short period afrer collection, as specified by approved methodology. <br />6. "Instantaneous" measurement is a single reading, observation, or measuremen[ performed on site using existing <br />monitoring facilities. <br />"Quarterly measurement frequency" means samples may be collected at any time during the calendaz quarter if a <br />continual dischazge occurs. If the dischazge is intermittent, then samples shall be collected during the period [hac <br />dischazge occurs. <br />8. 'Seven day average" means, with the exception of fecal coliform bacteria, the arithmetic mean of all samples <br />collected in a seven consecutive day period. For fecal coliform bacteria, it is [he geometric mean of all samples <br />taken in a seven consecutive day period. Such seven day averages shall be calculated for all calendaz weeks, which <br />aze defined as beginning on Sunday and ending on Samrday. If the calendar week overlaps two months (i.e. the .' <br />Sunday is in one month and the Samrday in the following month), the seven day average calculared for that ca~ <br />week shall be associated with the month [hat contains the Saturday. Samples may not be used for more than o <br />reporting period. (Not applicable to fecal coliform determinations.) <br />Amendment No. I Issued ~~-~ ~ Effec[ive <br />