Environmental Concerns 649 3.3 Continuous Discharger All permit effluent limitations, standards, and prohibitions, including those necessary to achieve water quality standards, will be stated as maxi mum daily and average monthly discharge limitations for all dischargers 3. 4 Non-Continuous Discharger a permittee's noncontinuous discharge is limited and described as follows Total m Maximum rate of discharge of pollutants during the dis Prohibition or limitation of specified pollutants by mass concentration, or other appropriate measure 3 Mass Limitations All pollutants limited in a dischargers permit will have limitations, standards, or prohibitions expressed in terms of mass except pH, temperature, radiation, or other pollutants which cannot be expressed by mass when standards and limitations are expressed in terms of other units of measurement if the permit limitations were issued on a case-by-case basis limitations expressed in terms of mass are infeasible because the mass of the pollutant discharged cannot be related to a measure of operation · permit ns to ensure that dilution will not be used a substitute for treatment a permittee must comply with pollutants limited in terms of mass Additionally, pollutants may be limited in terms of other units of measure- ment, in which case a permittee must comply with both limitationsEnvironmental Concerns 649 3.3 Continuous Discharger All permit effluent limitations, standards, and prohibitions, including those necessary to achieve water quality standards, will be stated as maxi￾mum daily and average monthly discharge limitations for all dischargers. 3.4 Non-Continuous Discharger A permittee’s noncontinuous discharge is limited and described as Frequency Total mass Maximum rate of discharge of pollutants during the dis￾Prohibition or limitation of specified pollutants by mass, follows: charge concentration, or other appropriate measure 3.5 Mass Limitations All pollutants limited in a discharger’s permit will have limitations, standards, or prohibitions expressed in terms of mass except: pH, temperature, radiation, or other pollutants which cannot be expressed by mass when standards and limitations are expressed in terms of other units of measurement ifthe permit limitations were issued on a case-by-case basis, limitations expressed in terms ofmass are infeasible because the mass of the pollutant discharged cannot be related to a measure of operation permit conditions to ensure that dilution will not be used as a substitute for treatment A permittee must comply with pollutants limited in terms of mass. Additionally, pollutants may be limited in terms of other units of measure￾ment, in which case a permittee must comply with both limitations