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<br />Unifrax 1 LLC Industrial Wastewater Discharge Permit page 3 of 36 <br />PART II - MONITORING REQUIRMENTS <br /> <br />A. Monitoring Frequency <br /> <br />1. The following parameters shall be monitored at the frequency and with the sampling <br />type stated below. All measurements, tests, and analyses of the characteristics of <br />water and wastes to which reference is made in this permit shall be conducted using <br />the methods and procedures approved in 40 CFR 136 and amendments thereto, <br />unless otherwise specified in an applicable Categorical Pretreatment Standard. <br /> <br /> <br />The following parameters shall be monitored at Sample Site Outfall # 5-1 with the methods and at <br />the frequency stated below: <br />Parameter Sampling Frequency Sampling Type <br />Flow, total (gpd) Daily Continuously <br />Flow Monthly (gal) Monthly Continuously <br />BOD5 (mg/l) Monthly Composite <br />pH (SU) Monthly Grab <br />Total Suspended Solids (mg/l) Monthly Composite <br />Phosphorus (mg/l) Semiannual Composite <br />Ammonia, nitrogen (mg/l) Semiannual Composite <br />Arsenic (mg/L) Semiannual Composite <br />Cadmium (mg/L) Semiannual Composite <br />Chromium (mg/L) Semiannual Composite <br />Copper (mg/L) Semiannual Composite <br />Lead (mg/L) Semiannual Composite <br />Mercury (mg/L) Semiannual Grab <br />Nickel (mg/l) Semiannual Composite <br />Oil and grease (mg/l) Semiannual Grab <br />Oil and Grease TPH (mg/l) Semiannual Grab <br />Silver (mg/L) Semiannual Composite <br />Zinc (mg/L) Semiannual Composite <br /> <br />See Flow Measurement Requirements referenced in Part III - Reporting Requirements. <br /> <br /> <br /> <br /> <br />