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• • Bowie Resources Limited Bowie No. 2 Mine Hydrologic Monitoring Data (1997 - 1999) NFr~-Inw North Fork -Drainage System Surface Water 9/90/1996 to 3/71/1997 9/31/1997 to Present Elev. 5680 Baseline Operational Field Parameters ben, rv9r 9.m ++nr omr arm ranr +as. 9v9e ov9r mn9 ++n9 Min Max Avg Min Max Avg Flow Rate (CFS) m°.° :xm.z m9.o sm.o su°s uma zn.o e..o xsn.6 u:n uoa sz.9 99.o smo ua D.D u9°a era Water level pH (Standard Units) e.s e.x e.s e.e e.• e~ e.s 6+ e.+ e.e e.z e.i e.s e.7 e.s 7.9 r.6 e.1 Conduc8vity (umhos/cm) Lm m zm tm tm m zm zso uo 7o zm nD sm no s9o m zm sm Temperature (C) >.o u.o v.e s.e 9.e ns us s e.1 u.e ns s6 •.° u.6 9s ss +en>s.+ m:es Lab Parameters', .~?j;;;_'~~`:.~,.:~ Wet Chemistry MDL Alkalinity as CaCO (mg/I) •~ 'm 6s m s sm 9s +m sm +s m m Bicarbonate as CaCO (mgll) z 6' sm ei sm +s sm 9s sm im •s sn m Carbonate as CaCO (mg/I) x <nm <roL <n <nm <noL <noL <nu <noL <noL <na <roL Hydroxide as CaCO (mg/I) x <eioL <ia <noL <noL <nDL <noL <na <noL <noL <roL Chlodde (mgll) L <n z <roL e z z ~ 9 <noL 9 s Conduc8vity (umhos/cm) ' so: us su zse ms zs+ us rz uz sm m sm NiVale (mgfl) a.m am a.a <n o.m °..s umL ate o.m <vtt au ass Nitrate/Nitrite as N, dis. (mg/I) a.°z o.m 6.a o.m <n a.s <smL ass a.m <uDL a+e D.1e NiUite as N, dissolved (mg/I) o.oi D.°s <n <ru <noL ma <nm <noL mDL aos o.m pH (Lab Units) as 7.z z.6 7.• e.s z.o 7s e.o e.o e.s 7.° e.s rs Hardness (mg/I) L m n v 9e 9s w u es <noL sm a Phosphate (mgfl) o.m <na <roL D.m <n ma <npL <nlx <rma <na °.m o.9s Phosphorous, ortho dis. (mg/I) o.am < <roL nose o.zm <noL <roL <npL D.m6 °.m1 <ntt °.zm o.az7 TDS @180 C (mg/I) '° m sm m sm m sm sm sso sm m tm sso TSS (mg/I) s sz <nDL a +° <n <nM <na s 1 <nDL sz 9 SAR °'m U.l] 0.61 D.ll <M <n <nD D.55 0.66 °.el <n0. 0.ee 0.]D Sulfate (mg/l) LO M $0 m EO <nOL 10 m 6 MOL ]0 +] Metals Aluminum, total rec. (mg/I) o.m i.n oz9 s.w o.sD a.6r o.m o.to D.:s o.ss o.m sA o.w Arsenic, total recoverable (mgfl) ems <n <roL <n <nDL <roL ems o.ms <na <roL <na Catlmium, total recoverable (mg4) °'061 <n `" <ea <noL <r+DL <na <noL moL <nDL <roL <noL Calcium, total recoverable (mgfl) o.z 9.7 u.D Le.7 ms s: e u s :+.s u.o :•.e 9.z >t.z ms Copper, total rewverable (mgfl) o. <nD <eioL <nm <na <n <na <nDL <na <noL <na <roL <roL Iron, total rewverable (mg/I) o.os t.m a1s o.61 an ass o.m p.s• o.x7 o.zs a.m 1.N nn Lead, total rewverable (mgfl) °~°• <ea <n am <roL <ros <eex nax a.ot <na o.m aos Magnesium, total rec. (mg/I) o.x z.o .a x9 e.z x~ e.° s.° s.7 se z.o 7.7 a• Manganese, total rec. (mg/I) a a.ms oos9 a.as. o.o+e aoL> 6.°ss 6.azi nrm o.am a.as+ ems 0.019 Mercury, total rec. (mg/l) °~®z <t+°L <roL <roL <n <noL <noL <rxx <noL <noL <na <roL Molybtlenum, total rec. (mgfl) D.os <noL <noL <n <n <na <noL <eioL <na <noL <eioL <roL Selenium, dissolved (mg/I) o.ms <no <roL <noL <noL <na <na <roL <na <soL <sn <nDL Sodium, dissolved (mg/I) °~ 1.o n.7 ss ses +.• ss.e u s V.9 sx.z 1.D u.• us Zinc, dissolved (mg/I) o.os o.ax °.m <nm o.at o.ox am o.az <nDL o.m aos Organic Analysis Oil and Grease, total rec. (mg/I) z <na <n <nDL <nm <noL <noL <roL <noL <nDL <roL <na Repwred by current permit. Baseline Information for Point NFG-low is denvetl from events beginning on 9130!1996 through 3!!1/1997, a period of -6 months. Poin[ influenced by mining on 9ri1/1997. • Field Parameters, except flow, for Iha Lower NoM Fork of the Gunnison River are taken on me river approximately 1,500' Delow Y+e confluence or Tenor Creek and me North Fork of the Gunnison. Flow tlata for the North Fork or the Gunnison river is obtained from Ne USGS from a weosite . This flow reading is obtained telemetriwlry from a s[anon near Somerset. CO and is reflective of upper sveam bows only. MDL =Method Determination Limit BLANK =Not Tested Monitoring Point Table 79