Max. Conc./LC50 0.14 N/A *Observed (Chemical A) and proposed (Chemical B) chemical concentrations within the cooling water system. The lower value is the target concentration and the upper value is the maximum concentration. These are maximum potential discharge concentrations assuming that the cooling water system concentration is equal to the blowdown discharge concentration. Table A-2: Chronic Toxicity Chemical A Chemical B Discharge concentration* 1.0 - 2.0 mg/L 2.0 - 3.0 mg/L Species tested Ceriodaphnia dubia Test duration 7-d NOEC (reproduction) 1.12 mg/L 2.25 mg/L Target Conc./NOEC 0.89 0.89 Max. Conc./NOEC 1.79 1.33 IC25 (reproduction) 1.88 mg/L 3.85 mg/L Target Conc./IC25 0.53 0.52 Max. Conc./IC25 1.06 0.78 Species tested Pimephales promelas Test duration 7-d NOEC (mortality) 3.11 mg/L >1,000 mg/L Target Conc./NOEC 0.32 N/A Max. Conc./NOEC 0.64 N/A IC25 (reproduction) 6.69 mg/L >1,000 mg/L Target Conc./IC25 0.15 N/A Max. Conc./IC25 0.30 N/A *Observed (Chemical A) and proposed (Chemical B) chemical concentrations within the cooling water system. The lower value is the target concentration and the upper value is the maximum concentration. These are maximum potential discharge concentrations assuming that the cooling water system concentration is equal to the blowdown discharge concentration.
Max. Conc./LC50 0.14 N/A *Observed (Chemical A) and proposed (Chemical B) chemical concentrations within the cooling water system. The lower value is the target concentration and the upper value is the maximum concentration. These are maximum potential discharge concentrations assuming that the cooling water system concentration is equal to the blowdown discharge concentration. Table A-2: Chronic Toxicity Chemical A Chemical B Discharge concentration* 1.0 - 2.0 mg/L 2.0 - 3.0 mg/L Species tested Ceriodaphnia dubia Test duration 7-d NOEC (reproduction) 1.12 mg/L 2.25 mg/L Target Conc./NOEC 0.89 0.89 Max. Conc./NOEC 1.79 1.33 IC25 (reproduction) 1.88 mg/L 3.85 mg/L Target Conc./IC25 0.53 0.52 Max. Conc./IC25 1.06 0.78 Species tested Pimephales promelas Test duration 7-d NOEC (mortality) 3.11 mg/L >1,000 mg/L Target Conc./NOEC 0.32 N/A Max. Conc./NOEC 0.64 N/A IC25 (reproduction) 6.69 mg/L >1,000 mg/L Target Conc./IC25 0.15 N/A Max. Conc./IC25 0.30 N/A *Observed (Chemical A) and proposed (Chemical B) chemical concentrations within the cooling water system. The lower value is the target concentration and the upper value is the maximum concentration. These are maximum potential discharge concentrations assuming that the cooling water system concentration is equal to the blowdown discharge concentration.