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<br />Pemut No: CO-01100213 <br />Page 7 <br />MONITORING REQUIREMENTS <br />1. Freeuenev and Sample Tvce (Continued) <br />Self-monikoring sampling by the perailtiee for compliance with the monitming requirempnh specified above shall be perfomrd at the <br />following locations: putfalls 00? and 008, the discharges from sedimentation ponds, Fxfore enuring Calamity Dtaw. Outfalls 009 <br />OI I attd 012, discharge from sedimentation ponds, before emeting Tuttle Drew. <br />Ifthe permittee, using the approved analy[icat methods, tnonimrs eayparatnehr snore ftoquendythanregrnred bythis permit, dtertthe <br />results ofsuch monitoring shall be included in the calculation and reporting ofthevalues required in the Discharge Monitoring Report <br />Form (DMRs), or other forms as required by the Division. Such increased frequency shall also be indicated. <br />b. Oil end Cirease Monitorhre <br />Fos every outfall with oil and grease monitoring, in the even as oil sheen or floating oil is observed, a grab sample shall be <br />collected, analyzed, and reported on rho appropriate DMA Tn addition, corrective action shall be taken immediately to mitigate <br />the discharge of oil and grease. A description of the cerrective action taken should be included with the DIvIR. <br />2. Salinity Parameters <br />Analysis for salinity shall be required is all industrial permits that discharge in the Colorado River Basin. In order to obtain an <br />indication of the quantity of salimtybeing discharged fromthe site, which is measured as Loral dissolved solids (TDS), orby elccttical <br />conductivity (where satisfactory comla8oawith TDS has been established), the permittee shall monitor the wastewater e8luent at the <br />following frequencies: <br />Outfall Feeguency Samnl Tvce <br />DOS, 008, 009, 011 and 012 Quarterly ~, 6zab <br />• Seif-monitoring samples taken m compliance with the rtmnitormg requires specified above shall be taken at ffiose locations listedm <br />Part I.B.1, <br />C. DEF1NfCIONS OF TERMS <br />1. "Composite" sample is a minnrnrm of four grab saatples collected at equally spaced two hour intervals amtproportioued acconlnrg m <br />flow. <br />2. "Continuous" measurement, is a measurement obtained from an automatic recordarg device which contimraliy measmee provides <br />measureaeents. <br />3. "Chronic lethality" occurs when a statistically aigroficant difference, at the 95%confidence level, ou:urs in the chronic test batweea <br />the amrtality of the test species in 100% elllueat (the chronic IWC *~ 21%) artd Nte watroL <br />4. "DailyMavlm+,m limitation"means thelimitation for this parameter sha0 be appliedas an instantaneous maxi~an{or, forpH orDO, <br />instantaneous minimtmt) value. The instantaneous value is defined as the analytical result of any individual sample. DMRs shall <br />inchxle the maximum (and/or mini~mm)ofa0 instamm~eons vahrea within the calendar montb. Any i~tanrarteous valuebcyoad the <br />noted daily narxi®rm limitation for the indicated parameter shall be considered a violation of this penult <br />5. "Fecal colifomr bacteria" thirty (30) day and seven (~ day averages shall be detemriued as explained in 11. and 12. below, <br />respectively, except that the geornchic mean shall be used instead oFthe arithmetic mean. <br />The geomtric mean may >x calcalnted using two different methods. For the methods shown, a, b, c, d, etc. are individual sample <br />results, and n is the total rmmber of saroptes. <br /><u.1 <br />Method 1: Geometric Mean ®(a'b"c"d'...) "s" - meant/ multiply <br />Method 2: Geometric Mean ~ antilog ([log(a)+log(b}Hog(c}+log(d}h...)Jn ) <br />Graphical methods, even though they may also employ the use oflogarithms, may introduce significant error and may not be used. <br />AMENDED MAY 25 2006 EFFECTIVE JULY 1 2006 EXPIRATTION DATE MARCH 31 2007 <br />• <br />Attachment 2.05.3(3)-18-9 <br />