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OralTES BIOASSAY LABORATORY <br /> 1201 Illinois Avenue <br /> San Francisco, CA 94107 <br /> Report to <br /> Test No.: SA-3 <br /> Test Period: April 12-16, 1998 <br /> Date Reported: April 23, 1998 <br /> Craig P.seftenrich <br /> Laboratory Director <br /> TITLE 22 BIOASSAY <br /> Screen X Definitive <br /> Sample Description: Stockton MGP sediment core <br /> Test Organism: Pimephales promelas, <br /> fathead minnow Source: Thomas Fish Co. <br /> Temperature Range: Control Aquaria, 19.5-19.7^C <br /> Aeration Control Aquaria, Yes Test Aquaria, 19 2-20 0 °C <br /> Test Aquaria, Yes <br /> Bioassay Time in Test Sample Concentration (mg/1) <br /> Conditions Hours No. % No. 250 250 250 500 500 750 750 <br /> o Control <br /> Start 20 100 20 No. /V No. '/U No. % No. % <br /> Organisms 24 20 100 20 100 19 20 100 20 100 20 100 20 100 <br /> Surviving 48 20 100 20 100 95 11 55 4 20 20 100 <br /> 72 20 100 20 100 11 85 4 20 0 0 20 55 100 <br /> Srt <br /> 96 20 100 20 100 0 0 0 0 20 100 <br /> ta � t <br /> Dissolved 24 8.5,8.5 8.4,8.2 8.2,8.2 <br /> 8.6,8.5 <br /> Oxygen 48 7.4,7.3 7.0,7.1 6.8,6.9 8.0,7.9 <br /> (mg/1) 72 6.7,6.6 6.2,6.0 5.7,5.6 7.4,7.5 <br /> 96 6.116.1 5.6,5.6 <br /> Start <br /> 24 8.2,8.2 8.2,8.3 <br /> PH 48 8.3,8.3 <br /> 72 8.3,8.4 <br /> 96 8.3,8.4 8.4,8.4 8.5,8.6 8.2,8.2 <br /> Alkalinity Start <br /> (mg/I CaCO3) 96 52 40 <br /> Hardness Start 54 43 <br /> (mg/I CaCO3) 96 47 46 <br /> Conductivity Start 50 48 <br /> (Pmhos) 96 101 100 <br /> Results: LC50 272.7 m /I0 Confi107 104 <br /> Limits <br /> nce <br /> Method: Linear Interpolation(probit,angle,etc.analyses could not be used bete use tthere were le ssthan$two partial responses) <br /> -Test was terminated after 72 hours since screening criteria was already exceeded. <br /> Fish Length(cm): Max.= 3.4 <br /> Fish Wei Min.= 3.0 <br /> Weight(9) MaMean= 3.2 <br /> 9 Max.= 0.5 Min.= 0.3 <br /> Mean= 0.4 <br /> Title 22-SA3 <br />