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<br />OBSERVATIONS <br />Santa Fe Formation <br /> <br />A. Acid Base Accounting (ABA) <br />(From 1994 SRK report; 2 samples). <br />Acid production potential (APP) =tons CaCO3 per 1000 tons of ore. <br />Acid neutralization potential (ANP) =tons CaCO3 per 1000 tons of ore. <br />111 APP :ANP = <0.3 : 19.6 <br />112 APP :ANP = <0.3 : 35.2 <br />These samples have a very high acid neutralization potential. <br />B. Metals leachability - XRF and Batch Leach <br />(From SRK report; 2 samples. Data collected from core composite, 1988D. <br />All metals are within the range of average crustal abundance. <br />Selenium detection limits are above the regulated standard value for drinking water. All other <br />metals are below drinking water and agriculture standards. <br />C. Humidity Cell Tests <br />(From SRK report; 2 samples.) <br />Selenium exceeds drinking water (10 ug/L) and agriculture (20 ug/L) standards in one sample <br />(70 ug/L). Detection limits are higher than the regulated values in the other sample. <br />D. Method 1312 Leach Tests.. <br />(From Logsdon, 8 July 1995. 3 samples). <br />The synthesized data for the three samples show no exceedances of drinking water or <br />agricultural standards. <br />Pink Gneiss <br />A. Acid Base Accounting. <br />(From 1994 SRK report; 2 samples). <br />Both samples have very high acid neutralization potential. <br />(From Jones, 1994, report; 10 samples.) <br />5 <br />