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TOXICITY BIOASSAY <br /> BROWN AND CALDWELL Log No. E87-01-162 <br /> CONSULTING ENGINEERS <br /> ANALYTICAL SERVICES DIVISION Date Sampled 01/07/87 <br /> 1255 POWELL STREET Date Received 01/14/87 <br /> EMERYVILLE.CA 9•eoe Date Reported 01/23/87 <br /> In PHONE(41S)4232300 <br /> 1E. I. Du Pont De Nemours 9 Conpany <br /> Post Office Box 310 <br /> Report To: Antioch, California 94509 <br /> r <br /> �Attn: Mr. Robert Nunes <br /> L— f <br /> LWOretory Dlrecror <br /> CC. <br /> CALIFORNIA WASTE ASSESSMENT BIOASSAY <br /> Samole Description ASNDP 13 <br /> es; Jraanism <br /> pimephoLes promeLas., fathead minnow Source Redding <br /> � <br /> Dilution Water Fresh Source Emeryyi L Le Temperature Range <br /> Dechlorinated Tap Water <br /> =�erauon: AIi— Oxygen_ None <br /> D lution <br /> 3,0assav Time, Control <br /> I <br /> ; ons hrs No % No. % No % No. % No. % No. % No. <br /> Start in inn in 1 lnn In inn in <br /> 24 in inn in inn -in inn in <br /> an sms 48inn <br /> 96 <br /> Start 1 0 10.0 <br /> D solved', 24 10.0 10.1 <br /> Oxygen, 48 9 9.2 9.3 <br /> mg,172 10.8 <br /> in <br /> 96 6 9.6 <br /> Start 7.3 <br /> 24 7.a <br /> pH 1 48 7.6 7.7 <br /> 72 7.4 <br /> 96 <br /> Not established Not applicable <br /> =SSULTSI 96 hrTL,,- >0.75 Toxicity Units Percent survival in undiluted sample <br /> - 5-2 2 Min 3.8 Mean 4.5 'k cases wrwe 96 hour rvo,tsi h ooes moo!sa,.a o,e• <br /> Lenvi of fs" cm Mai 1 .23 "'.,r a'Gas:one om:gym&me sampe -+c'. a. <br /> We!g^c o`fIs~..g . Max <br /> 1 .74 Min 0.67 Mean rsaaanec <br /> t-)a!vst I r 4 d <br />