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RULE 4 PERFORMANCE STANDARDS <br />vrounawater,'.Al:uv:ai GroLnc'water `1ds `ro <br />grcunawater mcn'tcr'na wells completer .vithin Stree�er Fill, one <br />a,'uvial well completed in the uoozsp-in, C.eex alluviuM up- <br />stream from Streeter Fill, and one al,uvial well co,ialetea in the <br />Goodspring Creek alluvium at the base of Streeter Fill. Colowyo <br />will conauct monitoring and sampling of the above four wells ana <br />will install, monitor, and sample an ar, tional well adjacent to <br />Wilson Creex. The proposed well location is down gradient fr�,T <br />the Gossara Loadout ana will be completed during the summer of <br />1983. Estimates indicate the free water zone will be at <br />seventeen feet. The proposed well location is snows on Water <br />Monitoring Sites For Permit No. C-019-31 (Mao 37) and proposed <br />-well completion is shown in Figure 1. <br />In accordance with the Septemoer 22, 1932 "proposed <br />Decision and Findings of Compliance For The Colcwyo Coal Company <br />Colowyo Mine", all of the wells will be saMpled quarterly as <br />listed below. <br />Quuarttee�r�ly Simclina For. <br />a. Pit <br />b. Conductivity at 2500 <br />C. Total Dissolved Solids <br />d. BicarbonateHCO;j <br />e. Calcium (Ca4. <br />f. Macnesium (Mg+2) <br />g. Arr."-ii (NH3) <br />h. Nitrat? <br />i. Phosphate (PO4-3as P) <br />j. Sodium (Na{) <br />k. Sulfate (SOgi <br />1. Arsenic (As) <br />m. Iron (Fe) <br />n. Lead (Pb) <br />o. Manganese (Mn) <br />p. Mercury (Hg) <br />q. Selenium (Se) <br />r. Zinc <br />S. dater Level <br />Colowyo looks forward to ccntinued cco:erat,.on with M.L.R.C. and <br />will consult vit`i M.L.R.D., after the first annual report is submitted, in <br />efforts both tz evaluate the applicability of al, parameters chosen and <br />fre_uency of .Mon ".oring in acaorcance with the Septe-ber 23, 1982 "Proaosec <br />Dec's on and Findings of Compliance For The Colevyo Ccal Company Colowyo <br />Mine"; and `dentify any peculiar site specific c.9o4t,cns. <br />Upon receipt of the Divisions approva' c;' the ne-.+ portions of the <br />above Monitoring plans, Colowvo will implement the new arovisions of the <br />Plans- S�nce the new provisions were contenoi.,,:-J in 'he Seote-ner 22, <br />Rule 4 Performance Standards 4-18 Revision Date: 1/31/18 <br />Revision No.: TR -119 <br />