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PART <br /> Page 13 of 26 <br /> Permit No.:CO0000003 <br /> These limits apply to the total recoverable or the potentially dissolved fraction of metals. <br /> For hexavalent chromium,samples must be unacidified so dissolved concentrations will be measured rather than potentially <br /> dissolved concentrations. <br /> Parameter Practical Parameter Practical <br /> Quantitation Quantitation <br /> Limits, Limits, 1 <br /> Aluminum 50 /I Mercury 0.1 I <br /> Ammonia 1 m I Mercury(low-level) 0.003 l <br /> Arsenic 1 µg/I Nickel 50 µg/I <br /> Barium 5 l N-Ammonia 50 1 <br /> Beryllium 1 I N Nitrate/Nitrite 0.5 m l <br /> BOD/CBOD l mg/1 N-Nitrate 50 µ I <br /> Boron 50 µg/I N-Nitrite 10 µg/l <br /> Cadmium l µ I Total Nitrogen 0.5 m l <br /> Calcium 20 I Phenols 100 1 <br /> Chloride 2 mg/I Phosphorus 10 µg/1 <br /> Chlorine 0.1 mg/1 Radium 226 1 Ci/1 <br /> Total Residual Chlorine Radium 228 1 Ci/1 <br /> DPD colorimetric 0.10 mg/1 Selenium 1 µg/1 <br /> Amperometric titration 0.05 mg/1 Silver 0.5 µg/1 <br /> Chromium 20 1 Sodium 0.2 mg/1 <br /> Chromium, Hexavalent 20 µ I Sulfate 5 mg/1 <br /> Copper 5 µg/1 Sulfide 0.2 mg/1 <br /> Cyanide(Direct/Distilled) 10 1 Total Dissolved Solids 10 m I <br /> Cyanide,WAD+A47 10 1 Total Suspended Solids 10 m I <br /> Fluoride 0.1 m I Thallium 1 1 <br /> Iron 10 1 Uranium 1 1 <br /> Lead 1 1 Zinc 10 1 <br /> Magnesium 20 1 Non I henol D7065 10 1 <br /> Manganese 2 1 Non I henol D7485 0.33 1 <br /> 5. Records <br /> a. The permittee shall establish and maintain records. Those records shall include,but not be limited to,the following: <br /> i. The date,type,exact place,and time of sampling or measurements; <br /> ii. The individual(s)who performed the sampling or measurements; <br /> iii. The date(s)the analyses were performed; <br /> iv. The individual(s)who performed the analyses; <br /> v. The analytical techniques or methods used;and <br /> vi. The results of such analyses. <br /> vii. Any other observations which may result in an impact on the quality or quantity of the discharge as indicated in 40 <br /> CFR 122.44(i)(1)(iii). <br /> b. The permittee shall retain for a minimum of three(3)years records of all monitoring information,including all original <br /> strip chart recordings for continuous monitoring instrumentation,all calibration and maintenance records,copies of all <br /> reports required by this permit and records of all data used to complete the application for this permit.This period of <br /> retention shall be extended during the course of any unresolved litigation regarding the discharge of pollutants by the <br /> permittee or when requested by the Division or Regional Administrator. <br /> 6. Flow Measuring Device <br /> If not already a part of the permitted facility,within ninety(90)days after the effective date of the permit or prior to any <br /> discharge from the permitted outfall location 001 A,whichever is later,a flow measuring device shall be installed to give <br />