西沙君然:求人帮我翻译

New sources are subject to more rigorous effluent limits than existing sources,
based on the belief that it is cheaper to minimize effluent pollutants if environmental
controls are considered during plant design than it is to retrofit existing facilities.New sources include major modifications to existing facilities, as well as new construction.Effluent limits for new sources are based on consideration of an entire process rather
than the BAT and BCT approach, which requires pollution controls to be imposed fol-
lowing waste generation (commonly known as end-of-pipe treatment).As specified in the FWPCA, standards must consider control of the discharge of pollutants which reflects the greatest degree of effluent reduction which the Administrator determines to be achievable through application of the best available demonstrated control technology,
processes, operating methods, or other alternative including, where practicable, a standard permitting no discharge of pollutants, [emphasis added]