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DGMC, Hesperus, Color <br />Addition to 1997 ~ual Report <br /> A j B C D E <br />1 { I <br />2 compliance monitoring water sample analysis results <br />3 ~ <br />4 sampling of surface water downgrad ient of mine permit area <br />5 <br />6 j water <br />7 j sample <br />8 ~ number <br />9 analyzed for units ref standard 97111002 <br />10 ~ <br />11 Aluminum j ug/L E 5000 ~ S o <br />12 Antimony j ug/L B 6 t 5 <br />13 Arsenic j ug/L A 50 c f <br />14 Barium ug/L B 1000 p <br />15 Beryllium ~ uglL B 4 t D, ~ <br />16 Boron j ug/L A 750 R o <br />17 Cadmium ~ ug/L B 5 Gp, <br />18 Chromium j ug/L A 50 ~ ~ p <br />19 Copper j ug/L E 1000 ~ p <br />20 Cyanide mg/L B 0.200 < o~oo ~ <br />21 Floride j mg/L B 4 < 0,05 <br />22 Gross Alpha (+-Precision) ~ pCi/L B 15 ~ - 2,p <br />23 Gross Beta (+-Precision) j pCi/L D 50 + - ,g <br />24 Hardness as CaCO3 ~ mg/I <br />25 Iron j ug/L A 1000 /o <br />26 Lead I ug/L B 20 < / <br />27 Manganese 1 ug/L A 1000 c o <br />28 Mercury I ug/L B 2 ~ o, <br />29 Nickel uglL B 100 <br />30 Nitrate+Nitrite as N I mg/L A 10 0, <br />31 pH I units A 6.5-9.0 <br />32 Selenium ug/L A 10 c 5 <br />33 Silver I ug/L B 50 < p, ~ <br />34 Sulfate as SO4 I mg/L ~ A 250 / 9 <br />35 Thallium I ug/L B 2 < ~ <br />36 Uranium j ug/L <~ <br />37 Vanadium j ug/L E 100 ~ ~p <br />38 Zinc ug/L E 2000 </p <br />39 ' <br />40 I <br />41 ref A =Numeric Standards for San J uan River Basin, page 8 <br />42 ref B =The Basic Standards for Groundwater 3.11.0, page 22 <br />43 ref C =Numeric Standards for San Juan River Basin, age 3 <br />44 ref D =Colorado Primary Drinking Water Regulations, page 47 <br />45 ref E =The Basic Standards for Groundwater 3.11.0, page 23 <br />46 I <br />47 <br />48 i <br />49 ** =water sample number consisting of 8 di its, with <br />50 digits 1 & 2 indicating the year, <br />51 digits 3 & 4 indicating the month <br />52 digits 5 & 6 indicating the day, <br />53 digits 7 & 8 indicating sample taken that date <br />54 <br />55 <br />56 <br />dmg-2 \ dgmc 7 /dmgl 5/13/1998 <br />