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DocuSign Envelope ID: D07924E6-3D94-4398-AO66-B683COBAB33E <br /> Table 7: Chronic Pimephales promelas reference toxicant test with NaCl, conducted <br /> November 3 to 10, 2020. <br /> g NaCl/L Control 0.5 1.5 3.0 5.0 7.0 <br /> #alive/#exposed 38/40 36/40 31/40 16/40 8/40 6/10 <br /> %survival 95 90 77.5 40 20 15 <br /> Dry Weight(mg) 0.380 0.352 0.323 0.143 0.048 0.025 <br /> ±SD ±0.053 ±0.086 ±0.052 ±0.086 ±0.010 ±0.022 <br /> Growth: <br /> IC25(ICp Method) = 1.82 g NaCl/L (95% C.I. 0.07 to 2.54) <br /> Note: This is within our accepted performance range (0.98 to 2.30) <br /> determined by 20 previous reference tests performed. <br /> Table 8: Chronic Pimephales promelas reference toxicant test with NaCl, conducted January <br /> 5 to 12, 2021. <br /> g NaCl/L Control 0.5 1.5 3.0 5.0 7.0 <br /> #alive/#exposed 40/40 40/40 40/40 24/40 13/40 1/10 <br /> %survival 100 100 100 60 32.5 2.5 <br /> Dry Weight(mg) 0.566 0.526 0.519 0.251 0.076 0.005 <br /> ±SD ±0.075 ±0.073 ±0.037 ±0.088 ±0.015 ±0.011 <br /> Growth: <br /> IC25(ICp Method) = 2.03 g NaCl/L (95% C.I. 1.57 to 2.47) <br /> Note: This is within our accepted performance range (1.00 to 2.33) <br /> determined by 20 previous reference tests performed. <br /> GEI Consultants,Inc. 10 February 2021 <br /> Ecological Division Whole Effluent Toxicity Test Report <br /> Stantec-Elk Ridge Mining and Reclamation,LLC <br />