Document X7GDEY9Jaxzq8VYV5pJ131jB

RECEIVED PFOS Ecotoxicological Testing Results OPlfyffQpprison of Effect Concentrations Calculated Using Different Sample Purity M H M rr^an {n fasured concentrations, except where * (nominal). Parameter W astewater bacteria (OECD 209) 3-hr EC50 Inhibition at highest concentration tested (905 or 870 mg/L) = 39% Selenastrum capricornutum ( freshwater green algae) 96-hr NOEC (growth rate) 96-hr ErC10 (95% Confidence Interval) 96-hr ErC50 (95% Confdence Interval) Daphnia magna (freshwater water flea) Acute 48-hr NOEC Acute 48-hr EC10 (95% Confidence Interval) Acute 48-hr EC50 (95% Confidence Interval) Acute 48-hr EC, (95% Confidence Interval) 21-day Semi-Stataic Life-cycle Test NOEC 21-day Semi-Stataic Life-cycle Test LOEC Mysidopsis bahia (marine shrimp) Acute 96-hr NOEC Acute 96-hr EC^, (95% Confidence Interval) 35-day Flow-through Life Cycle Test NOEC 35-day Flow-through Life Cycle Test LOEC Unio complamatus (freshwater mussel) Acute 96-hour NOEC Acute 96-hour LC50 (95% Confidence Interval) Crassostrea vlrginlca Shell Deposition (oyster) Acute 96-hour NOEC Acute 96-hour EC50 (95% Confidence Interval) Solubility limits precluded obtaining EC50 value. Inhibition at highest concentration tested = 28% Pimephales promelas (fathead minnow) Acute 96-hr NOEC Acute 96-hr LC50 (95% Confidence Interval) 47-days Early Life-Stage Toxicity Test NOEC 47-days Early Life-Stage Toxicity Test LOEC Avian Dietary Toxicity Tests Acute Mallard Duck LC50 (95% Confidence Interval) Acute Mallard Duck No mortality concentration Acute Mallard Duck NOEC (weight loss) Acute Bobwhite Quail LC50 (95% Confidence Interval) Acute Bobwhite Quail no mortality concentration Acute Bobwhite Quail NOEC Result (90.49% purity) Result (86.9% purity) >905* >870* Units mg/L 44 59 (54 - 63) 126(115- 138) 33 53 (<11 ->91) 61 (33-91) 63 (<11 ->91) 12 24 1 .1 3.6 (3.0 - 4.6) 0.25 0.55 20 59 (51 - 6 8 ) 1.9 >3.0 42 57(52 - 60) 121 (110-133) 32 51 (<11 ->87) 59 (32 - 87) 60 (<11 - >87) 12 23 1 .1 3.5 (2.9 - 4.4) 0.24 0.53 19 57 (49 - 65) 1 .8 >2.9 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 3.3 9.5 (8.0-11) 0.3 0 .6 628 (448 - 958) 146 37 220 (164 - 289) 73 73 3.2 9.1 (7.7-11) 0.29 0.58 603 (430-919) 141 35 212 (158-278) 70 70 mg/L mg/L mg/L mg/L mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg O ther Affected Studies Water Solubility (Pure water, GLP study) Water solubility (freshwater, non-GLP) Water solubility (freshwater algal medium, non-GLP) Water solubility (saltwater, non-GLP) 519 498 mg/L 371 326 mg/L 430 378 mg/L 24.9 2 1 .8 mg/L