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<br />practices necessary for the reduction of impacts from animal feeding operations, as described <br />in 81.6. <br /> <br />The following practices to decrease runoff volume from animal feeding operations are BMPs <br />within the meaning of this regulation: <br /> <br />(1) Operators of animal feeding operations shall divert runoff from uncontaminated <br />areas away from animal confinement areas and manure and process wastewater <br />control facilities to the maximum extent practicable through: <br /> <br />(a) Construction of ditches, terraces or other waterways; <br /> <br />(b) Installation of gutters, downspouts and buried conduits to divert roof drainage; <br /> <br />(c) Construction of roofed areas over animal confinement areas everywhere it is <br />practicable. <br /> <br />(2) Practices to decrease open lot surface area: <br /> <br />(a) Where practicable, operators of animal feeding operations shall: <br /> <br />(i) Reduce lot size; <br /> <br />(ii) Improve lot surfacing to support increased animal density; <br /> <br />(iii) Provide roofed area to the maximum extent practicable. <br /> <br />(iv) Collect manure frequently; and <br /> <br />(v) Eliminate animal confinement areas and manure 2fld process wastewater <br />control facilities in areas that slope in directions such that <br />wastewater/rainfall cannot be collected. <br /> <br />(3) Practices to decrease water volume: <br /> <br />(a) Operators of animal feeding operations shall repair or adjust waterers and <br />water systems to minimize water wastage. <br /> <br />(b) Operators of animal feeding operations shall use lowest practical amounts of <br />water for manure and process wastewater flushing. <br /> <br />(c) Water used to flush manure from paved surfaces or housed confinement <br />areas shall be recycled if practical and applicable. <br /> <br />(4) Practices to decrease wastewater discharges to watercourses: <br /> <br />(a) Operators of animal feeding operations shall coll,ect and allow wastewater to <br />evaporate. <br /> <br />13 <br />