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7083.4070 SSTS CREDENTIALING AND PRODUCT REGISTRATION 36 <br />B. obtain influent characteristics within the range of 106 - 108 fecal coliform/100 mL calculated <br />as 30-day geometric means during the test; <br />C. test the influent to any disinfection unit and report flow rate, pH, temperature, and turbidity <br />at each occasion of sampling performed in item D; <br />D. obtain samples for fecal coliform analysis during both design loading and stress loading <br />periods, as follows: <br />(1) grab samples shall be collected and analyzed from both the influent and effluent on <br />three separate days of the week; and <br />(2) each set of influent and effluent grab samples must be taken from a different dosing <br />time frame (morning, afternoon, or evening) so that samples have been taken from each dosing time frame <br />by the end of the week; <br />E. conduct analyses for fecal coliform according to Standard Methods for the Examination <br />of Water and Wastewater, prepared and published jointly by the American Public Health Association, <br />American Water Works Association, and Water Environment Federation (1998). The standard methods are <br />incorporated by reference, are available through the Minitex interlibrary loan system, and are subject to <br />frequent change; <br />F. report the geometric mean of fecal coliform test results from all samples taken within 30-day <br />or monthly calendar periods; <br />G. report the individual results of all samples taken throughout the test period for design loading <br />and stress loading; and <br />H. report all maintenance and servicing conducted during the testing period, such as instances <br />of cleaning an ultraviolet lamp or replenishment of chlorine chemicals. <br />Subp. 4. Disinfection. Manufacturers are allowed to register products that: <br />A. meet the bacteriological testing requirements alone, without the need for a separate <br />disinfection device to meet treatment level A or B; <br />B. meet the bacteriological testing requirements when tested with a compatible secondary <br />disinfection device as a component of the process to meet treatment level A or B; or <br />C. meet the bacteriological testing requirements when coupled with a compatible secondary <br />disinfection device that meets bacteriological requirements of this part as a component of the process to <br />meet treatment level A or B. <br />Statutory Authority: MS s 115.03; 115.55 <br />History: 32 SR 1420; 35 SR 1353 <br />Published Electronically: August 29, 2013 <br />7083.4070 DISTRIBUTION MEDIUM; CERTIFICATION AND REGISTRATION. <br />A. Drainfield rock distribution media shall meet the requirements in item D and the <br />requirements contained in the recommended standards and guidance for public domain distribution <br />products before local units of government are allowed to permit its use. <br />Copyright ©2014 by the Rev <br />so <br />of Statutes, State of Minnesota. All Rights Reserved. <br />