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~.11
Ground Wa er Quality Data
Grassy Creek
1991-1992
Station YGAL17
UNCENSORED DATA CENSORED DATA
•;7
N0. OF N0. OF

__________________________________________ OBS.
__________ MEAN
__________ ST.DEV,
______
_ HIN MAX OBS. MIN MAX

FIEID PARAMETERS __
___ ___________ ____________ _________ ____ _________ ____ _________
CONDUCTIVITY lUMH05/CM) 5 1218.00 56.75 1130.00 1280.00 0
PII IUNITS) 5 7.31 6.90 8.40 0
HATER TEMPERATURE IDEG C] 5 9.84 1.68 7,00 11.10 0
DEPTH TO MATER (FT] 4 6.10 (1.57 5.54 6.88 0
LABORATORY PARAMETERS
ALKALINITY, DISS. fMG/L OF CAC03] 5 315.60 28.89 270.00 346.00 D
ALUMINUM, DISS. (MG/L) 1 0.29 0.29 0.29 4 < 0.05 < 0.05
ARSENIC, DISS. IUG/L) 3 2.67 2.08 1.00 5.00 2 c 1.00 < 1.00
BARIUM, DISS. (UC/L] 5 34.00 11.40 20.00 50.00 0 ,
BICARBONATE, DI55. IMG/L] 5 378.00 34.39 329.00 422.00 0
BORON, DISS. IUG/L) 5 86.00 11.40 70.00 100.00 0
CADMIUM, DISS. IUG/LI 0 5 < 5.00 < 5.00
CALCIUM, DISS. fMG/LI 5 108.40 8.05 100.00 120.00 0
CARBONATE, DISS. lMG/L) 5 3.40 7.60 0.00 17.00 0
CHLORIDE, DISS. (MG/L] 5 7.20 4.09 4.00 14.00 0
CHROMIUM, DISS. (UG/L) 0 5 < 10.00 < 10.00
CONDUCTIVITY ~ 25 OEG L fUMH05/CM) 5 1122.00 126.37 950.00 1290.00 0
COPPER, DI55. (UG/L1 0 5 < 10.00 < 10.00
FLUORIDE, DI55. IMG/L] 5 0.25 0.09 0.20 0.40 0 ,
HARDNESS AS CAC03 fMC/L] 5 519.60 28.55 500.00 567.00 0
IRON, DI55. (MG/L) 5 i.80 1.27 2.12 5.52 0
LEAD, DISS. IUG/L) 0 5 < 20.00 < 20.00
MAGNESIUM, DISS. IMG/L) 5 60.60 2.88 57.00 65.00 0 ,
MANGANESE, DISS. IMG/LI 5 0.42 0.08 0.32 0.51 0
MERCURY, DISS. fUG/L) 0 5 < 0.10 < 0.10
MOLYBDENUM, DISS. IUG/L1 4 1.00 0.00 1.00 1.00 1 < 1.00 < 1.00
NICKEL, DISS. (UG/LI 0 5 < 20.00 < 20.00
NITROGEN, AMMONIA, DISS. fHG/L) 5 0.49 0.11 0.39 0.65 0
NITROGEN, NITRATE, DISS. (MG/LI 3 0.15 0.07 0.09 0.22 2 < 0.02 c 0.02
NITROGEN, NITRITE, DISS. (MG/L) 2 0.01 0.01 0.01 0.02 3 < 0.01 < 0.01
PH ~ 25 DEG C 5 8.00 7.60 8.50 0
PHOSPHATE AS P04, DISS. IMG/L1 3 0.10 0.00 0.10 0.10 2 < 0.10 < 0.10
POTASSIUM, DISS. (MG/L) 5 4.80 0.45 4.00 5.00 0
SELENIUM, DISS. (UG/L] 0 5 < 1.00 < 1.00
SILVER, DISS. lUG/L) 0 5 < 10.00 < 10.00
SODIUM, DISS. IMG/LI 5 56,60 2.70 53.00 60.00 0 ,
SAR 5 1.09 0.06 1.04 1.LB 0 ,
SULFATE, DISS. IMG/L) 5 317.40 30.69 274.00 342.00 0
SULFIDE, TOTAL (MG/L) 2 0.03 0.03 0.01 0.05 3 c 0.01 < 0.10
SUSPENDED SOLIDS fMG/LI 4 700.25 658.89 82.00 1625.00 1 < 2.00 < 2.00 .
ZINC, DISS. IMG/LI 2 0.01 0.00 0.01 0.01 3 < 0.01 < 0.01
CATION/ANION BALANCE (%) 5 -0.68 O.B3 -1.95 0.22 0 ,
DI55. DISSOLVED SOLIDS ~ 180 DEG IMG/L) 5 801.40 62.33 720.00 880.00 0 ,
DI55. DISSOLVED SOLIDS, CALCULATED IMG/L) 5 741.80 30.57 708.00 785.00 0 '
INDICATES NO DATA