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iR WATER <br /> & HAZARDOUS WASTE LABORATORY (foo 90&131 } CERTIFIED by CALIFORNIA DEPT of IiEALTH SERVICES <br /> Central Central Coast Lab Number F-14, 146-149 Comp <br /> 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 93481 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-17, S-18, SS-19, SS-20 <br /> San Rafael, CA 94901 Composite <br /> STATIC ACUTE BIOASSAY <br /> ispecies- Pimephales promelas <br /> Test Type Static 98 hr LC50 <br /> Common Nome Fathead Minnow <br /> Supplier Thomas Fish Co Dilution Water Freshwater (soft) <br /> 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 <br />,Acclimation Temperature 17 -19 degrees C 9 g Min Weight 0 24 g <br /> g Tank Volume 10 liters <br /> Dead in Acclimation Tank Hardness 46 <br /> Alkalinity- 35. <br /> INITIAL 24 HOUR 4$ HOUR 72 HOUR 96 HOUR <br /> DATE 11/13/89 11/14/89 11/15/89 11/16/89 11/17 89 <br /> 01300 JRH <br /> TIME. 01500 JRH 01330 JRH 01600 JRH / <br /> DO C pH DO C 01500 JRH No <br /> pH #M DO C pH #M DO C pH #M DO CH <br /> p #M Dead <br /> Deg <br /> g g g <br /> NTROL 8 9 117 7 4 9 0 17 7 5 0 8 8 17 7 6 0 8 8 17 7 6 0 8 6 118g 7 6 0 0 <br /> 750 mg/l 8 3 17 7 5 8 4 17 7 5 0 8 0 17 7 5 0 8 1 17 7 6 0 7 9 18 7 6 0 0 <br /> 750 mg/l 8 6 17 7 4 8 7 17 7 5 0 8 5 17 7 6 0 8 5 17 7 6 0 8 5 18 7 6 0 0 <br /> 580 mg/l 8 8 17 7 4 8 8 17 7 5 0 8 6 17 7 6 0 8 6 17 7 6 0 8 4 18 7 6 0 0 <br /> 500 mg/l 8 5 17 7 4 8 6 17 7 5 0 8 3 17 7 6 0 8 4 17 7 6 0 8 4 18 7 6 0 0 <br /> 250 mg/1 8 8 17 7 4 8 9 17 7 5 0 8 5 17 7 6 0 8 5 17 7 6 <br /> 0 8 4 18 7 6 0 0 <br /> 250 mg/l 8 5 17 7 4 . 8 6 17 7 5 0 8 4 17 7 6 0 8 5 17 7 6 0 8 3 18 7 6 0 0 <br /> REMARKS Sample Alkalinity Before 38mg/1 After 42mg/l <br /> 0750 mg/l Hardness Before 50mg/l After 52mg/l <br /> LC50 >750 mg/l 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 /> i1/20/89 Respectfully submitted, <br /> C <br /> ENTRAL <br /> ERVICESF14146BI WR1/#127 <br /> MHfke <br />