Section 463.13 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable(a) The BAT effluent limitations guidelines for bis(2-ethylhexyl) phthalate are reserved.(b) The Agency has determined that, with the exception of bis(2-ethylhexyl) phthalate, there are no toxic pollutants in treatable concentrations in contact cooling and heating water. Accordingly, the Agency is promulgating BAT effluent limitations guidelines equal to the BPT effluent limitations guidelines.