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<br />Results <br />WHOLE EFFLUENT TOXICITY BIOASSAY <br />ADDRESS ALL CORRESPONDENCE TO: <br />COMMERCIAL TESTING 8 ENGINEERING CO. <br />4665 PARIS STREET. SUITE 8-200 <br />DENVER, CO 80239 <br />TEL: (303) 373-4772 <br />FAX: (303) 373-4791 <br />The effluent sample did not indicate acute toxicity towards Pimephales promelas and Daphnia <br />magna survival. The following table highlights statistical endpoints for each species tested: <br />SPECIES LCS° ICzs' NOEC° LOECS <br />Fathead minnow >100% - 100% >100% <br />Daphnia magna >100% 100% >100% <br />EFFLUENT AND LABORATORY WATER CHEMISTRIES <br />PARAMETER EFFLUENT MEDIUM HARD <br />LAB WATER HARD LAB <br />WATER <br />Dissolved Oxygen (mg/L) 9.6 8.3 8.2 <br />pH (Standard Units) 7.3 8.4 8-6 <br />Hardness (mg/L CaC03) 1095 120 220 <br />Alkalinity (mg/L CaC03) 270 95 170 <br />Ammonia (mg/L as N) - X1.0 <1.0 <1.0 <br />Residual Chlorine (mg/L) <0.1 <0.1 <0.1 <br />Conductivity (µmhos/cm) 1800 420 705 <br />• FATHEAD MINNOW AND DAPHNIA MAGNA SURVIVAL DATA <br />CONCENTRATION ORGANISMS EXPOSED <br />DM FH MORTALITIES <br />DM FH %MORTALITY <br />DM FH <br />100% 20 40 0 4 0.00 10.00 <br />75% 20 40 0 0 0.00 0.00 <br />50% 20 40 1 0 5.00 0.00 <br />25% 20 40 0 0 0.00 0-00 <br />12.5% 20 40 1 0 5.00 0.00 <br />Control 20 . 40 0 0 0.00 0.00 <br /> <br />'Inhibition Concentration at 25% Reduction <br />° No Observed Effect Concentration <br />s Lowes[ Observed Effect Concentration <br />3 Commercial Testing & Engineering Co. I Minerals Services -Corporate Office <br />1919 S. Highland Ave., Suite 2108, Lomhard. IL 60146 t 16301953-9300 t 16301953-9306 wawvsgs.com <br />~ Membar M Ne SGS Greet' I$4CIft° GA°Anle tle Surveillance) <br />F-525 <br />