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NORTH COAST <br /> LABORATORIES .LTD <br /> f 1 <br /> • Date: 24; August 1993 <br /> Page 1 of 2 <br /> Report to: Western Environmental Science & Technology <br /> 1046 Olive Drive, Suite 3 <br /> Davis, CA 95616 f <br /> i <br /> Attn: Les Biddle <br /> Sample Description: Sheldon/Stockton/#1 Short <br /> ' � I <br /> NCL #: 93-08-344-02A <br /> i <br /> Date Received: ;; 08--16-93 Date Sampled: 08--11-93 <br /> HAZARDOUS WASTE BIOASSAY SCREENING TEST <br /> -----------------------==-==W- _________---_____�=---=T=_=---------- <br /> Supporting Data: <br /> Control. 250 mg/L 750 mg/,L Units ., <br /> #1 #2 #1 #2 #1 #2 <br /> Initial <br /> PH .; 7 . 5 7 . 6 7 . 5 7 . 5 7 . 6 7 . 6 pH units <br /> DO ' 7 : 6 7 . 5 7 .8 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 17 . 9 7 . 6 7 . 6 7 . 6 8 . 0 7 . 9 mg/L <br /> Total dead 0 D D 0 0 0 <br /> 48 Hour <br /> PH 7 . 8 7 . 7 7 .4 7 . 4 7 . 4 7 . 4 pH units <br /> DD 7 . 5 7 . 3 6 .8 7 . 0 7 . 1 7 . 2 mg/L <br /> Total dead 0 0 0 0 1 0 i <br /> 72 Hour <br /> pH 7 . 8 7 .7 7 . 4 7 . 4 7 . 4 7 . 4 pH units 1 <br /> DO 18 . 0 7 . 4 7 . 1 6. 5 7 . 2 6. 8 mg/L <br /> Total dead 0 0 0 D 1 0 <br /> 96 Hour <br /> PH 7 . 7 7 . 7 7 . 4 7 . 4 7 . 4 7 . 4, pH units <br /> DO 7 . 8 7 . 0 6. 3 6. 2 7 . 3 7 . 2 mg/L <br /> Total dead 0 0 0 0 1 0 <br /> Survival . 100% 100% 100% 100% 900 100% j <br /> Fish Data: <br /> Average Length: 2 . 5 cm Max. Length: 2 .7 cm Min. Length: 1. 9 cm <br /> Average Weight: 0. 25g Max. Weight: 0. 27g Min. 'Weight: 0. 19g <br /> I <br /> Acclimatization: 44' days " <br /> Species: Fathead Minnow, Pime hales promelas <br /> Date Started: 08-19-93 ' <br /> 2 tanks per dilution, 10 fish per tank <br /> Samples were maintained at 20 t 2°C f <br /> fi <br /> Labo at y S ervisor(s) QA Officer Jesse G. Chaney, Jr. <br /> I4 Laboratory Director . <br /> n(I Polid _Air,-it t r iliformi 955?] .707-8?12-46,49 -FAX 707-82:?-6931 <br /> a <br />