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=R, WATER & HAZARDOUS WASTE LABORATORY (fro 90&131 ) CERTIFIED by CALIFORNIA DEPT of JiEALTH SER 'ICES <br /> Central Central Coast Lob Number F-14, 142-145 Comp <br /> I Coast Analytical Services Collected 11/02/89 <br /> Analytical 141 Suburban Road, Suite C-4 Received 11/03/89 <br /> Services San Luis Obispo, California 93401 Tested As Listed <br /> (805) 543-2553 Collected by M Edmonson/M Stanger <br /> ATTN Kathleen Isaacson Sample Description <br /> Western Geologic Resources Project #7-076 01 <br /> 2169 E Francisco Blvd , Suite B SS-13, S-14, SS-15, SS-16 <br /> San Rafael, CA 94901 Composite <br /> STATIC ACUTE BIOASSAY <br /> ,`Species Pimephales promelas Test Type Static 96 hr LC50 <br /> Common Name Fathead Minnow Dilution Water Freshwater (soft) <br /> Supplier Thomas Fish Co Number per Tank 10 <br /> x Length 3 3 cm x Weight 0 56 g Max Length 4 0 cm Min Length 2 6 cm <br /> Acclimation Period >10 days Max Weight 0 91 g Min Weight 0 24 g <br /> Acclimation Temperature 17-19 degrees C Tank Volume 10 liters <br /> Dead in Acclimation Tank <1% Hardness 46 <br /> Alkalinity 35, <br /> INITIAL 24 HOUR 48 HOUR 72 HOUR 96 HOUR <br /> ATE 11/13/89 11/14/89 11/15/89 11/16/89 11/17/89 <br /> TIME 01500 JRH 01330 JRH 01600 JRH 01300 JRH 01500 JRH No <br /> DO C pH DO C pH #M DO C pH #'M DO C pH #M DO C pH #M Dead <br /> Deg. Deg Deg Deg, Deg <br /> bNTROL 9 2 17 7 4 9 3 17 7 5 0 9 1 17 7 6 0 9 0 17 7 6 0 8 8 18 7 6 0 0 <br /> 1750 m911 7 0 17 7 4 7 0 17 7 5 0 6 9 17 7 5 0 6 9 17 7 5 0 6 8 18 7 5 0 0 <br /> 750 mg/1 6 6 17 7 4 6 7 17 7 5 0 6 5 17 <br /> 7 5 0 6 7 17 7 5 0 6 5 18 7 5 0 0 <br /> 500 mg/1 6 8 17 7 4 6 8 17 7 5 0 6 6 17 7 5 0 6 7 17 7 6 0 6 6 18 7 6 0 0 <br /> 500 mg/l 8 3 17 7 4 8 5 17 7 5 0 8 2 17 7 5 0 8 2 17 7 6 0 8 0 18 7 6 0 0 <br /> 1250 mg/1 8 4 17 7 4 8 5 17 7 5 0 8 3 17 7 5 0 8 4 17 7 6 0 8 2 18 7 6 0 0 <br />,250 mg/l 8 7 17 7 4 ,8 8 17 7 5 0 8 5 17 7 5 0 8 4 17 7 6 0 8 2 18 7 6 0 0 <br /> REMARKS Sample Alkalinity Before 38mg/1 After 44mg/1 <br /> 0750 mg/1 Hardness Before 50mg/l After 52mg/1 <br /> LC50 >750 m9/1 LC50 <br /> This material does not have an acute aquatic 96-hr LC50 less than 500 mg/l with fathead minnows <br />,and according to 22 Cal Adm Code Art 11 Sec 66696 (4) is not hazardous or toxic by this <br /> criterion <br /> 1 <br /> Respectfully submitted, <br /> 11/20/89 <br /> F14142BI WR1//127 CENTRAL COAST A LYTICAL SERVICES <br /> MH/ke ` avl cek, h. President <br />