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I NORTH COAST <br /> LABORATORIES LTD. <br /> Date: 24 August 1993 <br /> 1 Page 1 of 2 ' <br /> Report to: Western Environmental Science & Technology <br /> 1046 Olive Drive, Suite 3 <br /> Davis, CA 95616 <br /> Attn: Les Biddle <br /> Sample Description: Sheldon/Stockton/#2 Short <br /> NGL # : 93-08344-03A <br /> f <br /> Date Received': 08-16-93 Date Sampled: 08-11--93 <br /> HAZARDOUS WASTE BIOASSAY SCREENING TEST <br /> Supporting Data: <br /> Control 250 mg/L 750 mg/L Units <br /> #1 #2 #1 #2 #1 #2 <br /> k <br /> Initial <br /> pH 7 . 5 7 . 6 7 . 5 7. 5 7 . 5 7 . 5 pH units <br /> DO 7 . 6 7 . 5 7 . 7 7 . 7 7 . 8 7.. 8 mg/L <br /> 24 Hour <br /> pH 7 . 8 7 . 7 7 . 6 7 . 5 7 . 6 7 . 6 pH units <br /> DO 7 . 9 7 . 6 7 . 2 7 . 2 7 . 8 8 . 0 mg/L " <br /> Total dead 0 0 0 0 0 0 <br /> t 48 Hour <br /> pH 7 . 8 7 . 7 7 . 4 7 . 4 7 . 3 7 . 4 pH units r; <br /> DO 7 . 5 7 . 3 6. 3 6. 3 7 . 0 7 . 0 mg/L <br /> Total dead jo 0 1 0 0 0 r <br /> 72 Hour <br /> pH 7 . 8 7 .7 7 . 3 7 . 3 7 . 4 7 . 4 pH units <br /> DO 8 . 0 7 . 4 5. 8 7 . 2 7 . 4 7 . 7 mg/L # <br /> Total dead . 0 0 1 0 0 0 <br /> 96 Hour <br /> pH 7 .7 7 . 7 7 . 4 7 . 4 7 . 5 7 . 5 pH units } <br /> DO 7 . 8 7 . 0 5. 7 7 . 2 7 . 4 7 . 4 mg/L <br /> Total dead 0 0 1 0 1 0 <br /> Survival 100% 100% 90% 100% 90% 100% f <br /> Fish Data: <br /> l Average Length: 2 . 5 cm Max. Length: 2 . 7 cm Min. Length: . 1.9 cm' f <br /> Average Weight: 0. 25g Max. Weight: 0. 27g Min. Weight: 0. 19gs <br /> Acclimatization; 44 days <br /> Species:'I Fathead Minnow, Pimephales prome3as <br /> Date Started: 08-19-93 � <br /> 2 tanks per dilution, 10 fish per tank <br /> Samples were maintained at 20 ± 20C <br /> Labo at y Supervisor(s) QA Officer Jesse G. Chaney, Jr. <br /> Laboratory Director <br /> ,(,Rn Wotit Fnif Ro:i(f -Arcat,"t (, liforni,-i 95521 •707-822-4649 -FAX 707-822.6831 a <br />