Laserfiche WebLink
• <br />Results <br />9 WHOLE EFFLUENT TOXICITY BIOASSAY <br />The effluent sample did not indicate acute toxicity towards Pimephales promelas survival. The <br />following table highlights statistical endpoints: <br />SPECIES LC50 NOEC3 LOEC4 <br />Pimephales <br />romelas >100 % 100% >100% <br />is <br />• EFFLUENT AND LABORATORY WATER CHEMISTRIES <br />PARAMETER EFFLUENT LAB H2O <br />Dissolved Oxygen (mg/L) 7.9 8.0 <br />pH (Standard Units) 7.9 8.0 <br />Hardness (mg/L CaC03) 1833 86 <br />Alkalinity (mg/L CaC03) 335 51 <br />Ammonia (mg/L as N) --2.0 <0.1 <br />Residual Chlorine (mg/L) <0.1 <0.1 <br />Conductivity (gmhos/cm) 3590 317 <br />• PIMEPHALES PROMELAS SURVIVAL DATA <br />Concentration Organisms Exposed Mortalities % Survival <br />Control 40 0 100 <br />12.5% 40 1 97.5 <br />25% 40 1 97.5 <br />50% 40 4 90 <br />75% 40 6 85 <br />100% 40 5 87.5 <br />• <br />Mean Temperature: 20.7°C <br />Temperature Range: 19.7-21.5°C <br />3 No Observed Effect Concentration <br />4 Lowest Observed Effect Concentration