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Permit Modified: October 18, 2014 Elk River W WTF Page 22 <br />Permit Expires: June 34, 2018 Permit it: MN0020788 <br />Chapter 9, Biosolids-Land Application <br />4. Pollutant Limits <br />4.1 Biosolids which are applied to the land must not exceed the ceiling concentrations in Table 1 and must not be <br />applied so that the cumulative amounts of pollutant in Table 2 are exceeded. <br />Table 1 Ceiling Concentrations (dry weight basis) <br />Parameter in units mg/kg <br />Arsenic 75 <br />Cadmium 85 <br />Copper 4300 <br />Lead 840 <br />Mercury 57 <br />Molybdenum 75 <br />Nickel 420 <br />Selenium 100 <br />Zinc 7500 <br />Table 2 Cumulative Loading Limits <br />Parameter in units lbs/acre <br />Arsenic 37 <br />Cadmium 35 <br />Copper 1339 <br />Lead 258 <br />Mercury 15 <br />Molybdenum not established* <br />Nickel 375 <br />Selenium 84 <br />Zinc 2500 <br />*The cumulative limit for molybdenum has not been established at the time of permit issuance <br />5. Pathogen and Vector Attraction Reduction <br />5.1 Biosolids shall be processed, treated, or be incorporated or injected into the soil to meet one of the vector <br />attraction reduction requirements in Minnesota Rules, pt. 7041.1400. <br />51 Biosolids shall be processed or treated by one of the alternatives in Minnesota Rules, pt. 7041.1300 to meet the <br />Class A or glass B standards for the reduction of pathogens. When Class B biosolids are applied to the land, the <br />site restrictions in Minnesota Rules, pt. 7041.1300 must also he met. <br />