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B. Monitoring Definitions <br />1. Composite — Samples are obtained through flow -proportional sampling technique over a 24-hour <br />period or for the duration of discharge within the 24-hour sampling period, including multiple <br />batches of wastewater. If, within 120 days of the effective date of this permit, the permittee <br />demonstrates that time -proportional sampling is accurate or as representative as flow -proportional <br />sampling, then a time -proportional sample may be collected. <br />2. Grab Sample — A single sample collected from a wastestream without regard to the flow in the <br />wastestream and over a period of time not to exceed fifteen (15) minutes and taken at a time <br />representative of normal discharge. <br />3. Continuously — The permittee shall monitor the discharge flow continuously and submit totalized <br />daily flows with the Periodic Compliance Report (PCR). Each ' PCR shall include all flow <br />measurements for the entire monitoring period covered in the report. This flow information shall <br />be in addition to the flow data collected during sampling which shall be measured from the start <br />of the sampling event to the end of the sampling event. <br />4. Daily monitoring frequency requires sampling to be conducted one (1) time in each calendar day. <br />5. Weekly monitoring frequency requires sampling to be conducted one (1) time in each calendar <br />week (Sunday to Saturday). <br />6. Monthly monitoring frequency requires sampling to be conducted a minimum of one (1) time per <br />calendar month. <br />7. Semiannual monitoring frequency requires sampling to be conducted a minimum of one (1) time <br />per semiannual period (111 Semiannual Period: January- June/2nd Semiannual Period: July - <br />December). <br />8. Quarterly monitoring frequency requires sampling to be conducted a minimum of one (1) time <br />per calendar quarter (I" Quarter: January -March/ 2nd Quarter: April -June/ 3rd Quarter: July - <br />September/ 4ch Quarter: October -December). <br />9. The following conventional pollutants shall incur a surcharge in excess of the stated limitations <br />below, as stated in Section 17-23(b) of the City of South Bend's Municipal Code. <br />Surcharge for ammonia (NH3-N) >25 mg/L <br />Surcharge for BOD5 >250 mg/L <br />Surcharge for phosphorus > I0 mg/L <br />Surcharge for Total Suspended Solids (TSS) >250 mg/L <br />