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PART I Page l5 Permit No. CO-0000221 . B. MONITORING REQUIREMENTS 1. Freauencr and Sample Tvce (continued) c. Outfall 009• Effluent Parameter Measurement Freauencv Sample Tvpe Flow, MGD Total Suspended Solids, mg/f Total Iron, mg/f Settleable Solids, mf/F Oil and Grease, mg/P pH, s.u. Weekly Monthly Monthly Monthly Weekly Weekly Instantaneous or Continuous Grab Grab Grab Visual In-situ * Winer Monitorine Exemption: For the noted outfalls, during the period from November through February each yeaz, flow, oil and grease and pH monitoring may be performed on a monthly frequency, if adverse weather conditions prohibit safe access to the discharge points. When this occurs, the permittee shall so indicate in cover letters to the appropriate Discharge Monitoring Reports. ** WET Testing is waived for the first calendar quarters and may be waived for the fourth quatters if inaccessibility is demonstrated. See Winter Molti[oring Exemption above. • d. Oil and Grease Monitorine Far every outfall with oil and grease monitoring, in the event an oil sheen or floating oil is observed, a grab sample shall be collected, analyzed, and repotted on the appropriate DMR. In addi[ion, corrective action shall be taken immediately to mitigate the discharge of oil and grease. A description of the corrective action taken should be included with the DMR. e. Salinity Parameters In order to obtain an indication of the quan[iry of Salinity being dischazged from the site, the permittee shall monitor the wastewater effluent at the following frequencies: Outfalls Frequency 002, 003, 004, 005, 006, 008, 009. O10 and O1 ] Quarterly Sample Tvpe Grab Self-monitoring sampling by the permi[[ee for compliance with [he monitoring requirements specified in Pan I.B.I. shall be performed at the following locations: outfalls 002, 003, 004, 005, 006, 008, 009, 010 and 011 - at the outfall of the sedimentation ponds prior to entering the immediate receiving waters. If the permittee, using the approved analytical methods, monitors any parameter more frequently than required by this permit, then the resulu of such monitoring shall be included in the calculation and repotting of the values required in the Dischazge Monitoring Report Form or other forms as required by the Division. Such increased frequency shall also be indicated. • See Pari I.C. for Definitions. INDBP x/9/93