REP15793

• Permit No: C1996083
• IBM Index Class Name: Report
• Doc Date: 7/10/2000
• Doc Name: 1999 ANNUAL HYDROLOGY REPORT PART 2 OF 3
• Annual Report Year: 1999
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

Bowie Resources Limited
Bowie No. 2 Mine
• 1999 Annual Hydrology Report
DH-15 Stevens Draw - Dril) Hole
Depth - 21B' Pipe 1.8' Above Ground
For the Period Beginning 0110 111 9 9 9 and Ending 1 2131/1 99 9
Ground ~llr'ater
Too of Pioe Elevation - 7143.3'
Fleid Parameters 05Q0/1999 06/28/1988 09/09/1999 a1/1 d/1999 Base Line Min Max Avg

Water Elevation (Feet) 6962.2 6951.1 6950.9 6951.0 6950.9 6950.9 6952.2' 6951.3
Depth to Water (Feel)
pH (Standard Units) 191.1
~ 7.e 192 .2
7.9 192.4
e.o 192 . l
7.9 192 .4
e.o 191.1'
~ 7.e 192 . i.
e.oi 192. p
7.9
'Conductivity (umhos/cm) 1900 1920 19x0 1900 1995 1900 19x0 1915
Temperature (C) 13.6 15.0 19.3 13.a la.s ~- 13.6 16.01 14.2
Lab Parameters
Wet Chemistry
Ikalinity as CaCO (mg/I) loan lobo 9z3 l06o i losoTOSO lI
Bicarbonate as CaCO (mg/q 1060 loco 9z3 lobo loco ~ 1060
Carbonate as CaCO (mg/I) I
Hydroxide as CaCO (mg/l) ~
Chloride (mg/I) 2a 2z za z2 ~ 2a z3
( Conductivity (umhos/cm) 1960 1B6U 1993 1660 'I 1910 I 1905
NI rlrl ate (mg/Ij 0.06 ~ +
Nitrate/Nitrite as N, dissolved (mg/I) o. os i
Nitrite as N, dissolved (mg4) ~ ! ~
Nitrogen, ammonia (mgfl) o.soo o.3eol o.aso o.3ao' o.sooj o.aao'
pH (Lab Units) s.l 7.9 a.o 7.9' B.1 a.o~
Hardness (mg/1) ~ s
'Phosphate (mgA) 0.37 o.aa O. z9 o.nl o.aa, o.al
Phosphorous, ortho dissolved (mg/I) a.12z o.lazl o.o9s a.lzzl o.laz~ a.23zi
Residue, Filterable (TDS) @780 C (mg/ /zoo use lno 1160 I /zoo I ueo
Sodium Absorption Ratio in Water ~ 7s.ao n.3o 96.4a 75.ao~ 77.30 76.35;
ISulJatel _ (mgll) ~ s ~ '
IlMetals
Arsenic, dissolved (mgll) ~ o. 001 ~
Cadmium, dtssolved (mg/q I
(Calcium, dissolved (mg/I) z.o 1.7 l.a I 1.71 z.o~ l.sl
Ilron, dissolved (mg/I) 0.01 o.03 0.1o a.ol 0.03' o.ozi
Iron, total recoverable (mg/I) 0.60'~I I O.1C' 6.17 ~ 0.30, 0.60 0.45.
I~gnesium, dissolved (mg/I) l.al o.e~ o.s I o.s l.c a.9
•Manganese, dissolved (mq4) c.o2o o.olsi p.oo7 i o.ols~ o.ozo o.on
Manganese, total recoverable (mg/I) o.o77i I o.o73 0.009 0.073 o.on c.o7s
Mercury, dissolved (mgfl) ~ ~ '
Selenium, dissolved (mg/I) I
Sodium, dissolved (mg/I) ~ 617. o; asz.a s13.o aez o sn.o x99.9
Zinc, dissolved (mg/I) I I o.a3
ReGUiretl oy Curtenl permit
Basel,ne Information for Point DH~15 rs derived fmm Cvenls beginning In O6t1211995 ihrou9h CSI0111997, a period 01 -22 months
.OH-15 (Dnl! Hole) is /orated on the western etlge or the Stevens Draw road.
Monitoring Poin! Table 87