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OHN C. HEPHART 1¢ CO. <br />G~~ND JUNCTION 1~D0~~T0~I~S <br />t73 NORTH AVENUE • PHONE t~t761t <br />ANALYI7CAL RFS'ORT <br />Reeeived eoinc Colorado Gol d and Silver <br />Denver, CO <br />iii iiiiii iiiiiiiiii <br />sss <br />GRAND JUNCTION, COLORADO tl SOl <br />Customs No. Ltbouoory No. 9671 Samp~t slag <br />Date Ramd 9/25/90 ate Repalt~ 10/23/90 <br />SAMPLE 9071 <br />Slag Material aster Limits for Classification <br />removal of precious as having characteristic <br />metals of EP Toxicity <br />EP Toxicity Metals: <br />Arsenic(As) 0.00 m_q/1 5.0 mg/1 <br />Bari um(Bal U. 05 m_q/1 100.0 mg/1 <br />~ Cadmium(Cdl U. 05 mg/1 1.0 mg/1 <br />Chromium(Cr1 0.13 mg/1 5.U mg/1 <br />Lead(Pb! 0.00 mg/1 5.0 mg/1 <br />Mercury(Hg1 0.002 mg/1 0.2 m_q/1 <br />Selenium(Se! 0.00 mg/1 1.0 mg/1 <br />Silver(Aq! O.UO mq/1 5.0 mq/1 <br />NOTE: "EP" results indicate extractable metals by EP Toxicity Test, a <br />mild extraction procedure with acetic acid at pH of 5, as per Federal <br />Register, Vol. 45, No. 98, Monday, May 19, 1980, Rules and Reguletions, <br />261.24, "Characteristic of EP Toxicity" (identical to Colorado Dept. of <br />Health Hazardous Waste Regulations, and EPA SW846 Test Methods for <br />Evaluating Solid Waste, 2.1.41. Lab Director: Brien Bauer <br />