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_ . <br />t <br />_. Port f <br />' .. :. .. ..: Page No, 7 <br />' . ~ _ ~ ~ - ~ - Permit Na: Cl~-t1013G-1% <br />C. DEFINITIONS OF TERMS <br />1. "Composite" sample is a minimum.of four (4) grab samples collected at equally spaced..nvo (2} hour intervals and proportioned <br />according to flow.. ' <br />•2. "Continuous".measurement,.is a measurement obtained from an automatic recording device: which continually provides <br />measurements. <br />3. "Daily Maximum limitation" means the -itnitation for this parameter shalt be applied as an instantaneous maximum (or, for pf i <br />or DO. instantaneous minimmn) value. The instantaneous value is defined as the analytical result of any individual sample. <br />D~iRs shall include the maximum (and/or minimum} of a!1 instantaneous values within the calendar month. Any instantaneous <br />value beyond the noted daily maximum (imitation for the indicated parameter shalt be considered a violation of this permit. <br />4. "Dissoh•ed (D} metals fraction" is defined in the Baci St,nd,~da end M thodntngi ~ fore S~nrf~LV,, rs, 1002-31, as that portion <br />of a water and suspended sediment sample which passed through a 0.40 or 0.45 um (micron) membrane filter. Dztemtinations <br />of"'dtssolved" constituents are made using the filtrate. This may include some very small (colloidap suspended particles, «nich <br />passed through the membrane filter as will as the amount of substance present in we,chemical solution. <br />5. "Ora6" sample, is a singe "dip and take". sample io bz representative of the pamntetcr beins rnoniwretl. <br />b. "-n-situ" measurement is defined.as asingle reading, observation or measurcmem taken in the field at the point of discharge. <br />7. "Ltstantaneous" tneasuremcnt is a single reading, observation, or measurement perfomtcd on site using existing rnoni« xim, <br />facilities. <br />K. "Potrntiapy dissolved (PD) metals fraction" isdefined in the $asjc sr~nriards and 4trrhndningi~"c for 4tirf•tre Water at 5 CCR <br />,1002-31, as that portion of a constituent measured from the Gltraie of a water and suspended sediment sample that was first <br />treated with nitric acid to a pI I pf 2 or less and let stand for R to 9C-hours prior [n sample filtration using a 0.40 or 0.4>-t \1 <br />(micron) membrane fitter. Note the "potentially dissoh•zd" method cannot be used where nitric acid will interfere with the <br />analytical procedure used for the constituent measured. <br />9. "Quarterly measurement freyueucy'"_ means samples may be collected at anytime during the calendar quarter if •u continual <br />discharge occurs. If the dixharge is intemtittcnt, then samples shall be collected during the period that discharge occurs. <br />10. "Recorder" requires the coutinurnts operation of a chart and/or` totalizer (or drinking tvatrr rotor meters or pump hour meters <br />where previously approved.) - <br />I I "Seven (7) Jay average" means, with the exception of fecal coliform bacteria, the anttunetic mean of all samples collected in a <br />seven (7) consecutive day period. For fecal colifonn bacteria, it is the geometric memi of all samples taken in •r seven (7) <br />consecutive day period. Such seven (7) day averages.shall be calculated fur all calendar weeks, which are defined as beginning <br />till Sunday and ending on Saturday. Ifthe calendar week ogerlaps two months (i.e. the Sunday is in one month and the Saturday <br />in the following monht), the seven (7) day average calculated for that calendar week shall be associated with the month that <br />contains the Saturday. Samples Wray not be used for more than one (1) reporting period. (Not applicable to fecal colifotnt <br />determinations.) <br />12. "Thirty (30} day average" means, except for fecal colifornt bacteria, the arithmetic mean of all samples collected during a thirty <br />(30)-consecutiveday period. For fecal colifomt bacteria, it is the geometric mean of all samples collected in a thirty (30) day <br />period. The petTrtittee shall report the appropriate mean of all self-monitoring sample data collected during the calendar month <br />on the Discharge Moniwrina Reports. Samples shall not be used fur more than one (1) reporting period. <br />13. "Total Metals" means the concentration of metals detemtined on an unfiltered sample following vigorous digestion (Section <br />4.1.3), or the sum of the concentrations of metals in both the dissolved and suspended fractions, as described in ":t&runu! nr <br />;Llethnds for CJrernical Annlvsis oJ' IVarer rnrd Ii4retec." L.S. Em ironntental Protection Agency, Alarch 1979, or its equivalent. <br />14. "Total Recoverable Metals" means that portion of a water and suspended sediment sample measured by the total recoverable <br />anaytical procedure described in "a/etlrodc jor Chemical arurlcris of Ifarer and lt~~.ctes. " U.S. Environmental Protection <br />Agency, .March 1979 or its equivalent. <br />