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LA\ TOXICITY BIOASSAY <br />ASSOCIATED L4BOR4MRIF5 <br />Report To: Weck Laboratories <br />Attn: Alfredo Pierri <br />14859 East Clark Ave. <br />City of Industry, Ca 91745 <br />Lab No. LR51565 <br />Date Received: 04/06/00 <br />Date Reported: 04/11 /00 <br />Bioassay Type <br />Static_X_ Continuous_ <br />Screening -X— Definitive <br />iple Description: <br />Wastewater - Sample #A002447-001 STKN Influent Date Collected 03/31 /00 Q None Given <br />Control <br />Test Organism <br />Pip hales Promelas <br />source Thomas Fish Farm <br />Acclimatization <br />22 Days @ 20 deg. C <br />Aquaria Volume <br />Iters Aquaria Depth <br />V inches No. Fish Concentration Total Chlorine Residual N D <br />Sample Conductivity (TUmhOS/Cm <br />Organism Characteristics <br />- Length mm) Min 30 mm <br />Max mm Avg 34 mm Weight (gm) Min <br />0.61 Cpm Max <br />0.67 qm Avg---GT5 m <br />Dilution Water - Source Soft Water <br />Hardness - Initial 40 mg Final 60 mg/1 <br />_ <br />Alkalinity- Initial 30 mg Final 40 mg <br />Aeration ,coir <br />ontrol Hardness Initial: <br />-40_M I Final: m ontrol Alkalinity Initial: m <br />Final: 3 mg <br />Control Conductivity19D umhos/cm <br />Bioassay <br />Conditions <br />Date <br />Time <br />Control <br />_ <br />Dilution <br />750 <br />mg/l <br />500 <br />mg/l <br />250 mg/l <br />750 mg/l <br />500 mg/l <br />250 mg/l <br />NO. <br />---EU- <br />s <br />1707- <br />TUU- <br />TUTS <br />TTS <br />I-UU- <br />11 o <br />i � <br />I-0- <br />NO. <br />o <br />JUU- <br />NO <br />o <br />-No. <br />lu <br />---,Tj-- <br />o <br />I� <br />o. <br />o <br />o. <br />o <br />Organisms <br />Surviving <br />Suryiving <br />04/U'/ <br />0 4 4 U8 <br />U4/U9 <br />UIQ <br />--1U- <br />---IU- <br />--TT--- <br />TU -0- <br />TT <br />IUo <br />170-- <br />TUU- <br />IDU <br />TUU - <br />TUU- <br />UU- <br />TUII- <br />1-0 i <br />1UU-TUU- <br />TUU- <br />�- <br />I -U - <br />-III- <br />TUU- <br />TUU- <br />TUU- <br />-I-U- <br />-rU- <br />-I U- <br />J70---j-0--TU-U---j-U--TUU- <br />LTi- <br />---ITT---TUU- <br />TUU- <br />---ETT- <br />SII- <br />TUU- <br />�- <br />�U- <br />I-UU--TT- <br />I-UU- <br />TO -0- <br />T o-0 <br />0 47T <br />-.16 <br />�- <br />--u-. -5-- <br />-i U- <br />-ITS <br />�- <br />TD -T- <br />�U- <br />�- <br />Dissolved <br />Oxygen <br />mrT/1 <br />PH <br />---------- <br />- - <br />Temp <br />11 <br />--.7T <br />--G <br />TT <br />TT --.UQ <br />--7-5- <br />-7-U- <br />--G-.7--_ <br />--77 <br />�T- <br />--F-.U- <br />-77.-C- <br />---/-.T- <br />3-- <br />--T.-T- <br />-77�1- <br />T7TQ <br />--T5- <br />--T.-5-- <br />-'TG-- <br />=-ZU <br />�r� <br />T4-Ffr <br />Tg--ITr <br />--7—.7— <br />--%-B— <br />— <br />—,—T— <br />--F—.9— <br />--7---Z— <br />-"-U <br />mss- <br />--7-.I- <br />2T --C <br />-7-.-3- <br />71--C <br />--rte- <br />=-C <br />-7-.U- <br />=--C <br />--7- <br />z` <br />--7-.-T- <br />-2= <br />--77-0- <br />2T <br />--T-. <br />TE -C4- <br />77--C <br />-773- <br />TF --C <br />-7-'Z- <br />71--C <br />-TC <br />T- <br />2T" -C <br />- <br />-T-T77 <br />7f ---r, <br />7= <br />--7-T- <br />=7-C <br />-7-'2- <br />7= <br />'r2 -HT <br />- <br />--7--f- <br />- 7.4 <br />UIQ <br />777 <br />-7-7- <br />71-7--C <br />71"� <br />--- 777- <br />7= <br />---T--Z- <br />=7 <br />7U--FFr <br />7T° -C <br />-7-4- <br />TIS <br />-7-3- <br />=-C <br />-7-7- <br />==-C <br />-T� <br />=-°-C <br />-T---T- <br />=-'C <br />-7� <br />Tf'-C- <br />Results - LC50 = <br />> 750 mg/1 <br />> 750 mg/1 <br />LC50 Method <br />Observation/Remarks: An LC50 > 500mg/1 is considered Non Harzardous by <br />California Administrative Code, Title 22, 66696 <br />Method of Calculations <br />95% Confidence Limits <br />Laboratory Supervisor / LAk <br />806 North Batavia - Orange, California 92868 - 714/771-6900 <br />