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Bowie Resources Limited <br />• 2000 Annual Hydrology Report <br />AW-4 Alluvial Well <br />Depth - 60' Pipe 1.12' Above Ground <br />Bowie No. 2 Mine <br />Top o! Pipe Elevation - 5977.92' <br />Ground Water <br /> <br />11/23/1998 to 327/199 3/27/1997 [o Present <br />Baseline Opetatlonal <br /> 03105100 06!40100 09/49/00 1710&00 Min Max Avg Min Max Avg <br />Water Elevation (Feet) 5962 9953 5999 9946 591].1 5942.7 5929.] 5999.1 5962.2 9950.9 <br />Depth to Water (Feet) 19.] 26.3 28.6 30.1 79.6 60.9 49.2 1s.7 33.8 2].0 <br />pH (Standard Uni[s) ].1 ].z ].1 ].1 ].0 7.0 ].0 6.] ].3 ].o <br />Conductivity (umhos/cm) leoo 3300 7]00 l]oo s]oo.o s]ao.o s]oo.o llao.o s3oo.o 4263.3 <br />Temperature (C) 10.6 1z.7 Ll,l u.s u.x 11.z ll.z 19.6 ls.s 12.s <br />Wet Chemistry MDL <br />Alkalinity as CaCO (mg/I) 601 99l 629 629 629 493 ]99 690 <br />Bicarbonate as CaCO (mgll) 20 607 493 629 621 624 493 ]99 640 <br />Carbonate as CaCO (rngll) 20 <[4D <M11 cM0)L <14DL <N<DL <NDL <!IDL ctgDL <br />Hydroxide as CaCO (mgA) 20 <I4tlL <HOL rf~L <rgDL <PIIIL cIgDL <PIDL <nDL <br />Chloride (mg/I) 1 149 lJ6 63 63 63 49 149 eJ <br />Conductivity (umhos/cm) 1 9190 3110 5110 9110 5110 JJ30 9490 4aJB <br />Nitrate (mg/I) 0.02 0.18 0.29 0.10 0.10 0.10 <DIDL 1.21 0.26 <br />Nitrate/Nitrate as N, dis. (mgA) 0.02 o.le o.z9 0.10 0.10 0.10 <nro1 l.zl 0.2] <br />Nitdte as N, dissolved (mg/I) o.ol <rm1 <61n1 <6ro1 <t40L cnol <Iro1 o.oe o.02 <br />Nitrogen, ammonia (mgll) o.os o. oa o.s4 0.39 0.34 o.la <rw1 1.13 0.42 <br />pH (Lab Units) 0.01 ].1 ].z ].s ].s ].s ].1 ].a ].3 <br />Hardness (mgA) 1 <t~IDL z6so 26so 26so <61n1 2730 13oe <br />Phosphate (mg/I) 0.01 <t~L <NO]L <Pff)L <ntDL <nro1 <6to1 0.120 0.021 <br />Phosphorous, ortho dis. (mg/I) o.ops o. oa9 <nm1 <61DL <nro1 <n1o1 <t4DL o.o]0 0.ole <br />TDS @180 C (mgll) 10 2]00 2650 5330 9770 5130 2]00 4990 3819 <br />$AR O.OJ 3.99 1.93 6.01 6.01 6.01 <l1DL 8.10 4.96 <br />Sulfate (mgA) 10 1280 1960 1220 3220 3220 1280 2]60 2020 <br />Metals <br />Arsenic, dissolved (mgll) 0.001 <t4DL <NtoL cDIDL <t4DL <t~IDL <Fff1L <I-D1L <DIDL <br />Cadmium, dissolved (mgA) 0.003 <t-tOL <DIDL ct~IDL <MOL <t~L <MDL <!IDL <I4DL <br />Calcium, dissolved (mgA) 0.2 299.0 265.0 469.0 969.0 469.0 230.0 496.0 123.6 <br />Iron, dissolved (mg/I) 0.01 0.02 0.09 <f4DL <nIDL <PII1L <t-1DL 0. ]l 0.17 <br />Imn, total recoverable (mcyl) 0.01 ~ 0.19 O. bJ 0.1 ] 0.1'1 0. L] 0 ,16 0.95 0.46 <br />Magnesium, dissolved (mg/I) 0.2 1]6.0 189.0 361.0 161.0 761.0 1]6.0 ]62.0 21a.3 <br />Manganese, dissolved (mg/I) 0.009 0.09 1.92 0640 0.640 0.640 <PIDL 1.920 0.618 <br />Manganese, total rec. (mgA) 0.009 0.39 1.4] 0620 0.620 0.620 0.290 1.9]0 0.69'1 <br />Mercury, dissolved (mgll) 0.0002 cFIDL <t4DL <!IDL <nIDL cDIDL <[4DL <NmL <MpD <br />Selenium, dissolved (mgA) o.ool <rroL <I~L <r1o1 <rvL <em1 <n1o1 0.002 0.000 <br />Sodium, dissolved (mg/I) 0.6 131.a l3].0 ]02.0 ]a2.o ]02.0 373.0 6e4.o gel.a <br />Zinc, dissolved (mgA) 0.03 <N01L <!mL <I4DL I <4tOL <HI1L <t-mL 0.04 0.01 <br />Required by current permit. <br />Baseline Information for Point AWd is tlerived Imm events beginning on 11/23/1996 through 3/27/1997, a period o/-4 months. Point inlluencetl by mining on 3/27/1997. <br />.Alluvial Wells AW-1 through AW-6 are located along Ne north side o/Old Stela Highway 733, near the entrance to the mine. <br />MDL =Method Determina0on Limit BLANK =Not Tested Monitoring Point Table 110 <br />