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TABLES SEWAL EFFLUENT LIMITATIONS FOR AMI f IA <br /> Description Ammonia Ammonia <br /> Season June 1 to September 30 October 1 to May 31 <br /> Effluent Concentrations NH3-N <br /> Sample Dates-Begin Jan-98 Jan-98 <br /> Sample Dates-End Dec-02 Dec-02 <br /> Sample Count 516 516 <br /> Reporting Limits m 0.1 0.1 <br /> Maximum Reported Concentration mgA 42.8 42.8 <br /> Mean (mgA) 17.70 17.70 <br /> Std.Deviation (mgA) 7.40 7.40 <br /> Coefficient of Variation CV 0.42 0.42 <br /> Back round Concentrations R-1 <br /> Sample Dates-Begin Jan-02 Jan-02 <br /> Sample Dates-End Jan-03 Jan-03 <br /> Sample Count 28 28 <br /> Count Above Reporting Limits 17 17 <br /> Reporting Umits(mgA) 0.01 0.01 <br /> Maximum Reported Concentration (mgA NH3-N) 1.4 1.4 <br /> Mean(mgA NH3-N)) 0.21 0.21 <br /> Criteria(2) acute chronic acute chronic <br /> H(1) 8.0 8.4 - 8.0 8.2 <br /> Temperature OC WA 26 N/A 20.7 <br /> Criteria m ammonia as N 5.62 0.62 5.62 1.2 <br /> Effluent Limit Calculations 10I <br /> Dilution Credit 0 4 0 4 <br /> Effluent Concentration Allowance 131 m /l 5.62 2.24 5.62 5.18 <br /> and a4 0.161 0.043 0.161 0.043 <br /> U30 <br /> 2141 - 0.0058 - 0.0058 <br /> ECA Multiplier 151 0.43 0.84 0.43 0.84 <br /> Long-Term Average 1 2.4 1.88 2.4 4.35 <br /> AMEL Multiplier(8).(6) ` 1.13 1.19 ` <br /> Average Monthly Effluent Limit(mg/1) 2.1 2.8 ' <br /> MDEL Multiplier lel ` 2.35 2.35 <br /> Max.Daily Effluent Limit(mg/1) 4.4 5.6 <br /> General Note:Unless noted otherwise,all concentrations given as mg/I Ammonia-Nitrogen. <br /> (1)Acute pH=maximum permitted effluent pH. Chronic pH=pH at edge of 4:1 mixing zone as calculated by USEPA DESCON <br /> program utilizing maxiumum permitted effluent pH and the maximum monthly average pH from Mossdale monitoring station(DWR- <br /> ESO-01485C,RSAN087)for Jan.1984 to Sept.2002. <br /> (2)Using CMC and CCC values. <br /> (3) Allows for dilution consideration,and is similar to the approach in Section 1.42,Step 2 of SIP. <br /> (4)Calculated considering dally sampling frequency,Section 5.4.1 of EPA Technical Support Document. <br /> (5)Acute and Chronic ECA Multiplier calculated at 99th percentile level per Sections 5.4.1 and 5.5.4 of TSD. <br /> (6)Assumes sampling frequency is 30 times per month. <br /> = Not applicable as other criteria LTA is more stringent. <br /> (7)LTAc modified to meet 1999 Update recommendation. <br /> (8)The probability basis for AMEL is 95th percentile level and for MDEL is 99th percentile level per Section 5.5.4 of TSD. <br /> (9)Calculated per Section 5.4.1 of TSD for aquatic life protection. <br />