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W.E.T. Inc. r & Environmental TesYine Inc._ 479 West 50 North, American Fork Utah 84003 (801)756-8397 Acute Whole Effluent Toxicity Chemical Result Report October 21, 1996 CUSTOMER NAME: PHONE NUMBER: Western Fuels-Colorado (New Horiwn Mine) 007 FAX NUMBER: Attn: Tod Lefevre 27646 West 5th Street Nucla, Colorado 81424 SAMPLE DESCRIPTION: Chemistries to go with Acute 2 Species Toxicity Test Collected 10/10/96. Receiving water data was taken from Historical files. Sample Test Log Acute Acute Source Performed Number Ceriodaphnia Minnow ,.. . Effluent :.:::..:.Total Haidness; Rscon (EPA 13.0.2). ..:: ; ::." :::.;::: : ' 1,110:mg/L.::: j.110 uigJL::.: Total Hardness, Effluent (EPA 130.2) 1547 1,657 mg/L 1,657 mg/L : ..: ::...... ' Total:Hardness, Receiving Wa}er.(EPA.130.2)..: : *: ":1,133 tpgLL' .:: .:::1;133 ~g7i. Ammonia, Effluent PA 350.2/350.3 ~ ) 1547 0.56 m L Bl 0.56 m P,n- ,.:.:: .. ). '::Amutoiila~ Reeeivin Water (bPA 350.2/350,3 g y. ~`, 0:13 m , 0:13.w Pte.::: :: Initial Chlorine Residual (EPA 330.5) 1547 <0.05 mg/L <0.05 mg/L Final Chlorine .Residual .(EPA 330:5) .: IS47 . - . mgl1... .. - mgJL .. Conductivity, Effluent (EPA 120.1) . .. 1547 2,485 umhos/cm 2,485 umhos/cm , . Alkalini ty, lfflaent .RA310,1) ..:: :.:.::.::.. ; .::; 154.2... . ..300 mg/L. CaCQ3. :300 mglL CaC03::i.: Conductivity, Receiving Water (EPA 120.1) • 1,939 umhos/cm 1,939 umhos/cm ............ Alkalinit , Reoeivia Water PA 310:1 y.. 352 m GaCO ,... 352 m CaCO Recon Initial pH (EPA 150.1) 8.a9 . 8.49 ,, ,.. ..'.Afte;.24:honrs pH (EPA 150.1) :. ,..:. . ,. :. . 852 ,: .. 3 . 44.:. :.:. . loo% Initial pH (EPA 150.1) . ]s47 7.71 7.71 . .. 100%.After:24 houis. H PA 15D.1 P... ~. ). 1547. .. : .,:.:S:Dl ;' : 8.1i :. Receiving Water Initial pH (EPA 150.1) 7.85 na Receiving Wat6iAfter-24'hours pH.(EPA 150:1) ..: Na.... nai .. . '. na " ' .. ": • * Historical data. ~ l/ 4 Yyst: Lee Rawlings, Chemist Environmental Testing, Inc.