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material (see appendix for dump sample analysis). Baseline groundwater quality is carefully <br /> observed at the Argo Tunnel by the US EPA and the CDPHE. A representative Argo Tunnel <br /> water sample was reported in Thomas R. Wildeman's Water Handbook for Metal Mining,page <br /> 4 and 10, Table I and II: <br /> Table 1. Ctssvlved Constituents in Some Natural Waters. <br /> (Untta arc in ngll unless statedl <br /> Rain River Coal Metal <br /> water water Minc dine <br /> ., •__..-.`--...11raLLi na C-- Draina e <br /> Menlo M1�4I!a4LlINl A,,g. for <br /> location Park, Acid •Argo Tunnel <br /> calif. \ea. Orleans Draina a COI-Ado <br /> Re ierencr ;181 t1.4; (17 t3i1 <br /> 510 =.,19 b.. 48 <br /> At 43 24 <br /> V.fl: 243 lsn <br /> `7a 0.3- 4'_ 1Su <br /> La U_-9 12 320 <br /> Mn l ao <br /> Ca o.. <br /> n l.i 44 <br /> Cd V.15 <br /> ih <br /> b I1.25 ..9 i.4 <br /> s LI <br /> Hu], <br /> CW .i 30 <br /> P:: <br /> cond.a <br /> Cond.a - _onducticit- in �mAo/gym <br /> 35 <br />