PERMFILE59652

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: 1990 ALLUVIAL VALLEY FLOOR INVESTIGATIONS FOR THE YOAST MINE
• Section_Exhibit Name: TAB 16 ATTACHMENT 16-3
• Media Type: D
• Archive: No

Ta~.2 •
Surface Water Quality Data
Grassy Creek
1991-1992
Station YSGFS
N0. OF
N0. OF CENSORED
DBSERVATIONS OBSERVATIONS MEAN ST. DEV. MIN HAX
FIELD PARAMETERS
CONDUCTIVITY IUMMOS/Cnl 14 0 1154.29 73.66 1020.00 1290.00
PH (UNITS) 14 0 8.12 7.89 6.32
MATER TEMPERATURE (DEG C) 14 0 12,90 5..33 1.00 22.60
FLON (CFS) 14 0 O.iB4 0.443 0.054 1.370
LABORATORY PARAMETERS _ _ _ _ _ _
ACIDITY, DISS. InG/L OF CA[03) 8 0 0.00 0.00
~ 0.00 0.00
ALKALINITY, DISS. (MG/L OF CAC03) 8 0 263.00 49.80 168.00 332.00
ALUMINUM, TOTAL RECOVERABLE lMG/l) 8 1 c 0.05 D.4;
ARSENIC, TOTAL RECOVE RABIE (UG/L) 8 4 c 1.00 2.00
BARIUM, TOTAL RECOVERABLE fUG/L) 7 0 91.43 19.52 50.00 110.00
BICARBONATE, DISS. (MG/L) 8 0 302.00 52.15 220.00 359.00
BORON,~DISS. (UG/L) 8 0 193.75 325.97 60.00 100D.00
CADMIUM, TOTAL RECOVERABLE (UG/L) 8 7 < 0.30 0.60
CALCIUM, DISS. IMG/L) 8 0 135.00 11.98 116.00 154.00
LARBOAATE, DISS. fMG/L) 8 0 6.13 1D.29 0.00 29.00
CHLORIDE, DISS. (MC/L) 8 0 7.13 0.35 7.00 8.00
CHROMIUM. TOTAL RECOVERABLE (UG/L) e B < 10.00 < 10.00
CONDUCTIVITY 9 25 DEC L (UMHOS/Cn) B 0 1095.25 121.27 932.00 1340.00
COPPER, SOS AL RECOVERABLE IUG/L) 6 6 < 10.00 20.00
FLWRIDE, DISS. IMG/L) 8 0 0.25 0.05 0.20 ~ 0.30
HARDNESS AS CA[O3 (MC/L) 8 0 611.25 51.26 532.00 697.00
IRON, TOTAL lMG/L) 8 0 0.58 0.41 0.15 1.i9
IRON, DISS. (MG/L) 8 8 < 0.02 c 0,02
LEAD, TOTAL RECOVERABLE (UG/L) 8 ~ 6 < 1.00 1.00
MAGNESIUM, DISS, lMG/L) 8 0 66.75 5.26 59. D0 76.00
MANGANESE, TOTAL (MG/L? B 0 0.23 0.21 0.04 0.67
MANGANESE, DISS. fMC/L) 8 0 0.15 0.11 0.04 0,30
MERCURY, TOTAL RECOVERABLE IUG/L) 8 7 c 0.30 0.50
MOLYBDENUM, TOTAL RECOVERABLE (UG/L) B 5 c 1.00 2.D0
NICKEL, TOTAL RECOVERABLE fUG/L) e 8 < 20,00 < 20.00
NITROGEN, AMMONIA, DI55, fMG/U - 8 3 0.04 0.17
NITROGEN, NITRATE, DI55. (MG/L) e ~ 3 c 0.02 O.li
HI GE)( RiiE, Di55. ii-iGi Li
~
V
~ 8 8 < 0.01 < 9.01
PH
O
25 DEG
G 14 0 8.11 7.70 8.70
PHOSPHATE AS PO4, DI55. (MG/L) 8 1 < 0.10 0.20
POTASSIUM, DISS. fMG/L) 8 0 5.50 0.93 5.00 7.00
SELENIUM, TOTAL RECOVERABLE IUC/L) 8 7 < 1.00 < 10.00
SILVER, TOTAL RECOVERABLE IUG/L) 8 8 c 0.50 c 0.50
SODIUM, DISS, fMG/L) 8 0 34.13 6.56 27.00 44.00
.S AR 8 0 0.61 0.10 0.46 0.73
SULFATE, DI55. (MG/L) 8 0 405.50 34.J0 346.00 449.D0
SULFIDE, TOTAL fMG/L) 8 6 < 0.01 0.09
SUSPENDED SOLIDS (MG/L) 8 2 < 2.00 40.00
ZINC, TOTAL RECOVERABLE (MC/L1 8 0 0.03 0.04 0.01 0.11
CATION/ANION BALANCE (%) 8 0 -0.37 0.87 -1.21 1.12
TOTAL DISSOLVED SOLIDS ~ 160 DEG (MC/L1 8 0 832.50 65.66 746.00 932.00
TOTAL DISSOLVED SOLI05, CALCULATED lMG/L) 8 0 812.38 70.27 719.00 946.D0
INDICATES NO-DATA