1999-06-18_HYDROLOGY - M1984049

• Permit No: M1984049
• IBM Index Class Name: Hydrology
• Doc Date: 6/18/1999
• Doc Name: REDUCED MONITORING FREQUENCY & PARAMETERS HOWARDSVILLE MILL PN M-84-049
• From: DMG
• To: CALCO INC
• Media Type: D
• Archive: No

DIVISION OF MINERALS AND GEOLOGY Site Name: Howardsville Mill
Hydrology Report- Baseline Conditions Permit No.: M-84-049
Monitoring site No.: G-3-Groundwater sample
Animas River: Aquatic Life Cold 1;Recreation 2;Agriculture. Monitoring Location: Down-gradient well between flood dike and tailings ponds.
PARAMETER UNITS LAB IDENTIFICATION NUMBER Average STANDARDS
1722 1819 1876 3082 3215 Aquatic Human Agriculture
Sample Date 06/24/97 08/17/97 10/04/97 06/30/98 09/27/98 5 quarters
Inter rated Grab Pump Pump Pump Pump N/A/ / N/ N/A N/A Surface CfS N N/A N A A urf a Flow A
2 1. 2.5 1.6
1.9
Well HZO Depth ft 5
H std. units 6.25 6.69 6.4 5.96 6.26 6.31 6.5 -9 5-9' 6.5 -8.5
2
Conductivity
EC us/cm 1110 860 775 2200 514 1092
N/ N/A NIA N/A N/A A
TSS mI N/A
•
S mI TD 15 0 345 1 7 3 4 76 l 7 7 602 54
3 5 7 2 0
/ 383 181 285 1 3 14 Hardness Har ss CaCO3Ca 3 m
T.Alkalini CaCO3CaCO3 m I 22 7 0 1 40 58 104 131
Ammonia NH3- m /I 7.65 9.5 10.25 11.25 1.5 8.03 0.02? 0.5..?
Chloride Cl- m /I 2 7 4 8 20 8 250 '
WAD Cyanide CN- m 1I 0.001 0.011 0.015 <0.001 0.003 0.0060 0.005 200 & 0.2` 0.2'
Nitrate NO3- m /I 0.4 0.2 0.4 0.5 0.5 0.4 10 100
Nitrite NO2- m /I 2 15 38 14 5 14.8 1 10
Sulfate SO4- mcill 600 360 360 250 250 364 250
0 00 0.0 0 002 92
0 0.006 11/ 25
Sulfide S- m I 0.002 0.
8.5 1 7 8
+ 10 5 5/ 126 62.2 0
Calcium Ca m I a m
8.0+ 3 .9 0
6 8.7 .58 4 m / 16.5 .3 2
Ma
gnesium nesium M I
Potassium K+ m ll 7.12 8.9 6.8 3.7 5.5 6.40
0.+ 6 2 10.5
7. 7./ 3. 27.9 3
Sodium N a m I 9
Aluminum All u A 82 6 230 1 4 64.60 87...... 5000 ....
Arsenic As u /I <5 3 2 <1 2.5 1.50 150 50..,... 100
Barium Ba u /I 6000 2000 6000 7000 3000 4800 1000
< < < •
Boron B u /I <100 100 100 100 100 20.00 750
Cadmium Cd u /I 0.9 <0.1 <0.1 <0.5 <0.1 0.2 1 ..1..... 5..,.. 10
Chromium Cr+3,6 u /I <50 10 <10 I <10 <10 2.00 11 50 100
Copper Cu u /I <5 34 6 <5 <5 8.00 12 1000 200
Iron Fe u /I 48000 32600 35600 11860 410 25694.00 loon(t.rec.) 300' 5000
Lead Pb u /I 9 <1 <1 2 4 3.00 4 50 100
Manganese Mn u /I 32700 15240 17720 10560 9555 17155 1462 50' 200
Mercury Hg u /I 13 <0.1 <0.1 <0.1 0.1 2.62 0.1 2 10
Nickel Ni u /I <100 123 195 38 91 89.40 96 100 200
Selenium Se u ll 1 <5 <5 <5 <5 2.00 17 50 20
Silver A u /I 0.1 0.1 0.1 <0.1 <0.1 0.06 0.32 50
Zinc Zn u /I �45090 1256 589 292 189 1383 106 5000' 2000
' Standards for Aquatic Life are Chronic at 100 hardness. ' CN Standards are for Free Cyanide.
Standards for Human Health with(')are Secondary Standards for drinking water.