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~G~ <br />Results cont. <br />ADDRESS ALL CORRESPONDENCE TO: <br />COMMERCIAL TESTING 8 ENGINEERING CO. <br />4665 PARIS STREET, SUITE &200 <br />DENVER, CO 80239 <br />TEL (303) 3734772 <br />PRELIMINARY TOXICITY IDENTIFICATION SURVIVAL DATA CONT. <br /> Hi Blank 100% <br />l <br />ti <br />T <br />t <br />A Ch 72 <br />0% <br />on <br />es <br />e <br />a <br />EDT 75% 65 % . <br /> 100% 30% <br /> Hi Blank 95% <br />Sodium Thiosulfate Addition 50°k 70% >100% <br />Test 75% 55% <br /> 100% 50% <br /> Hi Blank 100% <br />Acid/Base Ion Exchange 50% 100% >100% <br />Resin Test 75% 100% <br /> 100% 100% <br />INITITAL TOXICITY TEST SURVIVAL DATA <br />CONCENTRATION # EXPOSED MORTALITIES % SURVIVAL 48 HR. LCD <br />100% 20 5 75.0 <br />75% 20 0 100 <br />50°h 20 1 95.0 >100% <br />25% 20 1 95.0 <br />12.5% 20 0 100 <br />Control 20 0 100 <br />INITIAL WATER CHEMISTRY MEASUREMENTS <br />PARAMETER EFFLUENT LAB WATER <br />Dissolved Oxygen (mg/L) 11.4 8.3 <br />pH (Standard Units) 8.0 8.3 <br />Hardness (mg/L CaC03) 2500 ~ 115 <br />Alkalinity (mglL CaCOa) 335 85 <br />Ammonia (mg/L as N) <1.0 <1.0 <br />Residual Chlorine (mg/L) <0.1 <0.1 <br />Conductivity ( mhos/cm) 3350 ~ 390 <br />Commercial Testing & Engineering Co. Minerals Services - Corporate OFFce <br />1919 S. Highland Ave., Suite 2108, LombaN. IL 60148 t (6301953-9300 116301953.9306 <br />' Memo.. a Ma sGS Grout/ IsxiN6 6An0nla Ee s°millencal <br />