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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650}364 9600 FAX(650) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707) 792 0342 <br /> *Pacific Environmental Group Client Project ID Tosco 5417, Manteca, CA Sampled Aug 24, 1998 <br /> 11315 Sunrise Gold Circle, Ste M Sample Descript Water, Drum 1 Received Aug 25, 1998 <br /> Rancho Cordova, CA 95742 Analysis Method See below <br /> Attention Mike Mitchener Lab Number S808248- 01 Reported Sep 8, 1998 <br /> STATIC ACUTE HAZARDOUS WASTE BIOASSAY - DEFINITIVE <br /> Species Pimephales promelas Organisms/Tank 10 <br /> Common Name Fathead Minnow Organisms/Conc 20 <br /> Tank Depth 16 cm <br /> Mean length 41 mm Min length 37 mm Tank Volume 8 L <br /> Max length 44 mm Supplier Sticklebacks Unlimited <br /> Mean weight 038 g Min weight o29 g Acclimation Temp 20 +/- 1 °C <br /> Max weight 049 g <br /> Control Water Synthetic Softwater Alkalinity, mg/L Hardness, mg/L <br /> Hardness 40-48 Initial Final Initial Final <br /> Control 30 32 42 42 <br /> 1000 ppm 60 60 40 60 <br /> Duplicate 1000 ppm 60 60 60 60 <br /> Initial 24 Hr 48 Hr 72 Hr 96 Hr <br /> DATE 1 09/03/98 09/04/98 1 09/05/98 1 09/06/98 09/07/98 <br />• DO <br /> C1 pH DO C pH # M DO C pH # M DO C pH # M DO C <br /> pH # M Total <br /> mg/L Temp Units mg/L Temp Units Dead mg/L Temp Units Dead mg/L Temp Units I Deadmg/1-Templ Units Dead Dead <br /> Control 8 6 20 1 73 5 0 20 68 0 4 3 20 66 0 851 20 6 7 0 87 19 71 0 0 <br /> 1000 ppm 86 20 73 51 20 68 0 44 20 67 0 801 20 67 0 86 19 72 0 0 <br /> 560 ppm 86 20 73 53 1 20 681 0 45 20 67 0 80 20 67 0 87 19 72 0 0 <br /> 320 ppm 86 20 72 57 20 67 0 45 20 67 0 85 20 67 0 85 19 72 0 0 <br /> 180 ppm 86 20 72 60 20 66 0 48 20 67 0 47 20 68 0 45 i9 68 0 0 <br /> L . <br /> 100 ppm 86 20 72 53 20 64 0 39 1 20 66 0 81 20 67 0 82 19 72 0 0 <br /> Duplicate DO C pH DO C pH # M DO C pH # M DO C pH # M DO C pH # M Total <br /> mg/L Temp Units mg/L Temp Units Deadmg/L Temp Units Dead 1mg/1-:1Temp Units Dead mg/L Temp Units Dead Dead <br /> 1000 ppm 8 6 20 73 53 20 68 0 42 20 67 0 81 1 20 6 7 0 9-8 19 72 0 0 <br /> 560 ppm 8 6 20 72 5 2 20 67 0 43 20 67 0 84 20 6 7 0 85 19 71 0 0 <br /> 320 ppm 86 20 721 601 20 1 681 0 149120 1 67 0 85 20 67 0 1 82 19 1 71 0 0 <br /> 180 ppm 86 20 71 1 561 20 1 64 0 1 4220 66 0 89 20 671 0 1 1351 19 1 72 0 0 <br /> 100 ppm 1 86 20 701 52 1 20 1 631 0 1 42 1 20 1 66 0 1 86 20 73 0 82 19 71 0 0 <br /> LC-50: >1,000 ppm LC-50 Calculation Method Binomial <br /> Remarks <br /> Analyst M Grisiis Method Reference Static Acute Bioassay Procedures for Hazardous Waste Samples, <br /> November 1988, California Department of Fish and Game WPCL <br /> SEQUOIA ANALYTICAL, #1210 <br /> c <br /> ainda C Schneider S808248-PES <1> <br /> oject Manager/Sacramento Laboratory <br />