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Bowie Resources Limited <br />Bowie No. 2 Mine <br />• 2000 Annual Hydrology Report <br />AW-1 Alluvial Well <br />Depth - 120' Pipe 1.06' Above Ground Top of Pipe Elevation - 5977.76' <br />Ground Water <br />7 1/2 317 9 96 to 3/17/799 327/7997 to Present <br />Baseline Operational <br /> 03105100 0620/00 0929100 11106100 Min Max Avg Min Max Avg <br />W ater Elevation (Feet) 5914 5915 9907 sB9l 9995.8 590].9 5901.8 9892.6 5939.3 5919.5 <br />Depth to Water (Feet) 43.4 61.6 70.7 99.2 69.9 92.0 79.9 9].4 99.2 61.7 <br />pH (Standard Units) 7.s ].] 7.s 7.3 7.3 7.3 7.3 7.z 7.e ].s <br />Conductivity (umhos/rm) 3300 alo0 39mo 7300 e9oo.o 99mo.o 9900.0 3300.0 9000.0 sleo.o <br />Temperature (C) 9.e lz.o 12.6 11.9 lo.z lo.z lm.z 9.a 13.9 lz.o <br />• <br />Wet Chemistry MDL <br />Alkalinity as CaCO (mg/I) 391 96] 65] 69] 65'1 391 696 494 <br />Bicarbonate as CaCO (mgll) 20 351 66] 69] 69] 65] 351 696 494 <br />Carbonate as CaCO (mg/I) 20 <DIDL <MDL <tlDL <NDL <t-II)L <FmL <rroL <r~roL <br />Hydroxide as CaCO (mgll) 20 ~ cnDL <DIDL <t40L <D1DL <t-IDL <t4OL cP10L ct4DL <br />Chloride (mgll) 1 149 90 79 79 79 39 19B 69 <br />Conductivity (umhos/cm) 1 4030 6450 '1990 ]990 ]990 3e90 9610 5312 <br />Nitrate (mgA) 0.02 4.19 1.28 5.70 5. ]0 s. ]0 1.2e 9.40 4.49 <br />Nitrate/Nitrite as N, dis. (mgA) o.oz 4.19 l.ze s.7o s.7o s.7o 3.ze 9.40 9.49 <br />Nitrite as N, dissolved (mgA) 0.01 cP1DL <t4DL <NmL <t4DL <t4DL cMmL 0.04 0.00 <br />Nitrogen, ammonia (mryl) 0.09 cNmL 0.12 0.14 0.14 0.14 cPIDL 0.22 0.07 <br />pH (Lab Units) c.ol 7.5 7.3 ].e ].a 7.e 7.3 e.l 7.6 <br />Hardness (mgfl) 1 <h1DL z7so 27so z7so <I~mL 3130 99s <br />Phosphate (mg/I) 0.03 <FIDL cMpL <t40L cPfOL ct40L ct-1DL <MOL <FIDL <br />Phosphorous, ortho dis. (mg/l) 0.005 0.007 o.oos <!IDL <rmL cMmL ct-IDL o.oso 0.012 <br />TDS @180 C (mg/I) 10 3320 6090 '1990 ]990 ]990 3100 9]10 4]ll <br />SAR O.OJ ].09 11.]0 13.00 13.00 13.00 cf40L 12.90 9.91 <br />Sulfate (mg/I) 10 1930 3750 9300 5300 9300 1930 8310 3191 <br />Metals <br />Arsenic, dissolved (mg/I) o.ool <nroL cP10L o.ool o.ool o.ool <tgDL <nroL <PfOL <br />Cadmium, dissolved (mgll) o. 003 <troL <t-roL <t-roL <nroL <nvL <eroL <nroL c~L <br />Calcium, dissolved (mg/I) O.z 143.0 zs4.o 316.0 316.0 316.0 99.9 360.0 175.3 <br />Iron, dissolved (mg/I) o.ol <nvL crroL <rroL <rroL <~L <6mL 1.75 o.z2 <br />Iron, total recoverable (mg/I) o.ol o.z9 z.o1 0.70 0.70 0.70 o.z9 z.o1 1.13 <br />Magnesium, dissolvetl (mgll) o.z z16.o 33z.a a]6.o 4]6.0 4]6.0 ls7.o 543.0 z61.1 <br />Manganese, dissolved (mgll) 0.005 <MD)L <t4DL m.oso 0.050 0.050 <ntoL crmL <F1DL <br />Manganese, total rec. (mgA) o. oos o. oz 0.96 m.ofio 0.060 0.060 <t-IDL 1.3zo o.z7e <br />Mercury, dissolved (mg/I) 0.0002 <MIOL cDIDL <P1DL <MmL <hIDL <P1DL <MDL <t-iDL <br />Selenium, dissolved (mgll) 0.001 0.024 0.001 0.026 0.026 0.026 0.001 0.0]'1 O.o20 <br />Sodium, dissolved (mgll) 0.6 966.0 1190.0 1950.0 1990.0 1990.0 569.0 16]0.0 941.2 <br />Zinc, dissolved (mgll) 0.01 c1~L <t1DL <NDL <P1DL <41DL cliDL 0.03 0.01 <br />Required by curtent permit. <br />Baseline Information (or Point AW-1 is derived from events beginning on 11/23/7996 Through 3/27/1997, a period of -4 months. Point in6uanced by mining on 3/27/1997. <br />.Alluvial Wells AW-1 through AW-6 are located along the norN side of Oltl State Highway 133, near the entrance to the mine. <br />MDL =Method Determination Limit BLANK =Not Tested Monitoring Point Table 104 <br />