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DIVISION OF MINERALS AND GEOLOGY site Name: Howardsville Mill <br /> Hydrology Report-Baseline Conditions Permit No.: M-84-049 <br /> Monitoring site No.: S-5--Surface water sample <br /> Animas River: Aquatic Life cold 1; Recreation 2;Agriculture. Monitoring Location: Pre-Law Tailings discharge prior to mixing with Animas River. <br /> PARAMETER UNITS LAB IDENTIFICATION NUMBER Average STANDARDS <br /> 1704 1815 1872 3078 3211 Aquatic Human Agriculture <br /> Sample Date 06/15/97 08/17/97 10/04/97 06/30/98 09/27/98 5 quarters <br /> In er rat t ed/Grab Grab In e G Inter grated tl Integrated Integrated /e ter N A <br /> 9 9 9 <br /> Surface F 7 7 urta Flo <br /> w <br /> c 6 es fs 0. t 0.62 2 47 <br /> 0.1 0.4 <br /> We <br /> ll H2O Depth ft N/A N/A N/A /N A N/A N/A <br /> . <br /> H std. units 5.7 6.15 5.42 5.45 4.83 5.51 6.5-9. ... 5 -9 '` 6.5-8.5 <br /> Conductivity EC us/cm 668 941 877 400 620 701 <br /> TSS m 3./I 4 21.5 118 98 5.2 31.6 <br /> i <br /> T S D m /I 468 658 614 268 434 488 <br /> Hardness <br /> r CaCO3 mg/1 218 230 337 139 219 229 <br /> T.A lini < < <br /> Ika Ca 03 m / 1 6 0 C I 10 1 1 21 <br /> Ammonia NH3- m /I 2.65 3.9 2.85 0.8 1.08 2.26 0.02 ? 0.5 ? <br /> Chloride Cl- m /I 4 6 6 35 60 22 250" <br /> WAD Cyanide CN- m /1 0.001 0.01 0.01 0.001 0.003 0.0050 0.005..'..... 200 &0.2' ....•.. 0.2 <br /> Nitrate NO3- m /I 0.4 0.2 0.4 0.5 0.7 0.4 10 100 <br /> Nitrite NO2- m /I 1 <1 25 4 3 6.6 1 10 <br /> Sulfate SO4- m /I 360 520 480 265 300 385 250 <br /> 0 <br /> < < <br /> Sulfide S m /I 0.0 0.009 0 002 0 001 0 001 0024 <br /> 1 0. <br /> Calcium C m l 73. 8 6 8 01 <br /> alcl a / 7 1. 11 51 76 8 . <br /> M esi M m 8.1 6 43 0 3 99 a n um /I 9 1 .2 2.9 7.2 6. <br /> 0 7 Potassium K m /I 1. 6 8.4 4.7 .3 4.2 4.27 <br /> m 2 <br /> Sodium N m /I 4.1 17 3.6 7 4 6.3 <br /> a 2. <br /> Aluminum Al u /I 790 3 164 36 23 203.20 8 <br /> 7...:-Arsenic As u /I <5 <1 1 <1 <1.0 0.20 150 50BE100 <br /> Barium Ba u /I 10000 10000 7000 4000 2000 6600 1000 <br /> < << < • <br /> Boron B u /I 100 100 100 100 100 20.00 ` 750 <br /> Cadmium Cd u /1 15.9 7.3 10.5 12.6 8.5 11.0 1..1 ..... 5... 10 <br /> Chromium Cr+3 6 u /I <50 90 <10 <10 <10 18.00 11 50 100 <br /> Copper Cu u /I <5 12 7 35 21 15.00 12 1000 200 <br /> Iron Fe u /I 29800 31200 20500 4550 2330 17676.00 1000 t.rec.) 300 5000 <br /> Lead Pb u n <1 <1 <1 1 11 2.40 4 50 100 <br /> Manganese Mn u /I 18100 17510 12030 12460 21121 16244 1462 50' 200 <br /> Mercury H9 u /I <0.1 <0.1 0.4 0.1 0.1 0.12 0.1 2 10 <br /> Nickel Ni u /I <100 62 40 36 25 32.60 96 100 200 <br /> Selenium Se u /1 <5 <5 <5 <5 <5 0.00 17 50 20 <br /> Silver A u /I <0.1 0.2 0.2 0.2 <0.1 0.12 0.32 50 <br /> Zinc Zn u /I 1150 9930 4090 6040 6884 5619 106 5000 ' 2000..,... <br /> • Standards for Aquatic Life are Chronic at 100 hardness. " CN Standards are for Free Cyanide. <br /> • Standards for Human Health with (') are Secondary Standards for drinking water. <br />