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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 1a) 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical <br /> 1455 McDowell Blvd.North.Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> s-} ettler-Ryan - Dublin Client Project ID: Tosco#11195, Lathrop Sampled: Dec 17, 1998 <br /> :5747 Sierra Court, Suite J Sample Descript; water,Water-Ref Received; Dec 17, 1998 18:55 <br /> Dublin, CA 94568 Analysis Method: See below <br /> Attention: Doug Lee Lab Number: 812-1495 Reported: Jan 5, 1999 <br /> STATIC HAZARDOUS ABBREVIATED SCREEN BIOASSAY <br /> Species: Pimephales promelas <br /> Common Name: Fathead Minnow Organisms/Tank: 10 <br /> Organisms/Conc.: 20 <br /> Min. length: 26 mm Tank Depth: 13 cm <br /> Mean length: 28 mm Max. length: 31 mm Tank Volume: 10 L <br /> Min. weight: 0.23 g Acclimation Temp.: 20 1C <br /> Mean weight: 0.26 g Max. weight: 0.34 g Supplier: Sticklebacks Unlimited <br /> Dilution Water: Synthetic Softwater <br /> Hardness 40-48 Alkalinity,mg/L Hardness,mg/L <br /> InitialE40 <br /> al Initial Final <br /> Control 30 43 51 <br /> 750 ppm 32 48 52 <br /> Duplicate 750 ppm 33 48 54 <br /> Initial 24 Hr 48 Hr 72 Hr 96 Hr <br /> DATE 12/22/98 12/23/98 12/24/98 12/25/98 12/26/98 <br /> DOC pH DO C pH # M DO C pH # M DO C pH #M DO C pH # M Total <br /> mg/ Tem Units mg/L Temp Units Dead mg/L Temp Units Dead mg/L Temp Units Dead mg/L Temp Units Dead Dead <br /> Control 9.2 19 7.6 6.8 18 7.5 0 6.7 19 7.4 0 7.3 18 7.5 0 7.6 18 7.5 0 0 <br /> 750 ppm 9.3 18 7.8 7.1 18 7.5 0 7,0 19 7.4 0 7.5 18 7.5 0 7.7 18 7.6 0 0 <br /> 250 ppm 1 8.9 20 7.8 7.1 1 19 7.5 0 1 6.0 19 1 7.4 0 1 7.3 18 7.5 01 7.8 18 7,5 0 0 <br /> Duplicate <br /> 750 ppm 9.1 18 7.8 6.9 18 7.5 0 6.8 19 7.5 0 7.4 18 7.5 0 7.5 18 7.5 0 0 <br /> 250 ppm 9.0 21 7.8 6.5 19 7.5 0 6.5 19 7.5 0 1 7.3 19 7.5 0 7.8 18 7.5 0 0 <br /> Pass X Fail <br /> i <br /> i <br /> Remarks: The screen fails if > 40% of the fish die in the 750 ppm concentration. <br /> *Final hardness exceeded the method limit but did not have an affect on mortality. <br /> Analyst: K. Anderson/ Method Reference: Static Acute Bioassay Procedures for Hazardous Waste Samples, <br /> M. Kosovskiy November 1988, California Department of Fish and Game WPCL. <br /> SEQUOIA ANALYTICAL, #1271 <br /> L <br /> l e <br /> s <br /> Project Ma er 812-1495,GET <1> { <br /> � k <br />