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NORTH COAST <br /> LABORATORIES; LTD. <br /> , I h <br /> Date: 24 August 1993 F <br /> Page 1 of 2 <br /> Report to: Western Environmental Science & Technology- <br /> 10,46 Olive Drive, Suite 3 <br /> Davis, CA 95616 <br /> Attn: Les Biddle <br /> Sample Description: Sheldon/Stockton/#1 Tall <br /> NCL # : 93-08-'344-01A' <br /> Date Received:"i 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 /> y #1 #2 #1 #2 #1 #2 <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 . 8 7 . 8 7 . 8 7 . 8 mg/L <br /> 24 Hour <br /> PH 7". 8 7 . 7 7 . 6 7 . 5 7 . 5 7 . 6 pH units <br /> I DO „ 7 . 9 7 . 6 7 . 7 7 .4 7 . 8 7 . 8 mg/L <br /> Total dead 0 0 0 0 0 0 : <br /> 48 Hour <br /> PH 7 . 8 7 .7 7. 5 7 . 5 7 . 4 7 . 4 pH units <br /> DO i7 5 7 . 3 7 . 0 6. 7 7 . 0 6. 5 mg/L <br /> Total dead 0 0 0 0 0 0 <br /> 72 Hour <br /> PH 7 . 8 7 .7 7 .4 7 . 4 7 . 4 7 . 4 pH units ; <br /> DO 8 . 0 7 . 4 5 . 6 5. 2 6 . 6 7 . 1 mg/L <br /> Total dead 0 0 0 0 2 1 F <br /> 96 Hour <br /> . pH 7..7 7 .7 7 . 5 7 . 5 7 . 4 7 . 4 pH units <br /> DO 7 . 8 7 . 0 6. 3 6. 2 7 . 0 6. 9 mg/L <br /> Total "dead I 0 0 0 0 2 1 k r <br /> I <br /> Survival" 100% 100% 1000 1000 800 900 <br /> Fish Data: <br /> Average Length: 2 . 5 cm Max. Length: 2 . 7 cm Min. ' Length: , 1. 9 cm <br /> Average Weight: 0. 259 Max. Weight: 0. 27g Min. Weight: 0. 199 <br /> Acclimatization: 44 days <br /> Species: Fathead Minnow, Pime hales promelas <br /> Date Started: 08-19-93 <br /> 2 tanks per dilution, 10 fish perotank <br /> Samples were maintained at 20 + 2 C <br /> - <br /> Lab ary Supervisors) QA officeresse G. Chaney, Jr. <br /> k Laboratory Director <br /> r n n !` (. ;�71 .707 nT n�} •FAX 7n7-922-6931 <br /> (�ft1 ;41,.�r ( ���r� r', �c� r .. � -1 ��i 'iffll:t - . <br />