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ATTACHMENT A A <br /> AMENDMENT OF WASTE DISCHARGE REQUIREMENTS <br /> RESOLUTION NO.R5-2005- <br /> CITY OF MANTECA <br /> WASTEWATER QUALITY CONTROL FACILITY <br /> SAN JOAQUIN COUNTY <br /> TABLE 16 <br /> PRIORITY POLLUTANT EFFLUENT LIMITATIONS FOR HUMAN HEALTH <br /> BROMODICHLOROMETHANE AND DIBROMOCHLOROMETHANE <br /> Description Dibromochloromethane Bromodichloromethane <br /> Effluent Concentrations <br /> Sample Dates-Begin Apr-04 Apr-04 <br /> Sample Dates-End Apr-05 Apr-05 <br /> Sample Count 12 12 <br /> Count Above Reporting Limits 12 12 <br /> of Samples Above Reporting Limits 100 100 <br /> Reporting Limits(pg/1) 0.3 0.2 <br /> Maximum Reported Concentration(pg/1) 5.5 25.7 <br /> Mean(1)(pg/1) 2.2 14.4 <br /> Std.Deviation(')(pg/1) 1.6 4.8 <br /> Coefficient of Variation(')(CV)(pg/1) 0.72 0.33 <br /> Background Concentrations <br /> Sample Dates-Begin Jan-02 Jan-02 <br /> Sample Dates-End Dec-02 Dec-02 <br /> Sample Count 12 12 <br /> Count Above Reporting Limits 0 0 <br /> Reporting Limits(pg/1) 0.3 0.2 <br /> Maximum Reported Concentration(pg/1) <0.3 <0.2 <br /> Arithmetic mean(pg/1)z <0.3 <0.2 <br /> Criteria Human Health Human Health <br /> Basin Plan Objective(pg/1,dissolved) <br /> Translator(3) n/a n/a <br /> Criteria(pg/1,total recoverable)(4) 0.41 0.56 <br /> Effluent Limit Calculations <br /> Dilution Credit5 63 82 <br /> Effluent Concentration Allowance(6)(pg/1) 7.3 30.1 <br /> o'and a4' 0.42 1 0.12 0.10 0.03 <br /> AMEL Multiplier(7) 1.7 1.3 <br /> Average Monthly Effluent Limit(ug/1) 7 30 <br /> MDEL Multiplier(8)1 6 2.0 <br /> Max.Daily Effluent Limit(ug/1) 16 47 <br /> General Note:Unless noted otherwise,all concentrations given as total recoverable <br /> (1)Calculated per Section 1.4.6,Step 3 of SIP. <br /> (2)Calculated per Section 1.4.3.2 of SIP <br /> (3)EPA Translators used as default. <br /> (4)The total recoverable criteria is based on the CTR. <br /> (5)See Table 15 for applicable dilution credits for bromodichloromethane and dibromochloromethane. <br /> (6)ECA calculated per Section 1.4.13,Step 2 of SIP. <br /> (7)Assumes sampling frequency n=>4. Uses 95th percentile AMEL multiplier,Step 5 of SIP. <br /> (8)Uses 99th percentile MDEL multiplier,Step 5 of SIP. <br />