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RULE 4 PERFORMANCE STANDARDS <br />11 ? W?Iel? t7: 1 Stile Highwly 13 <br />? Mr ever. Ceioradu 81641 <br />COAL <br />COMPANY <br />??y")"-HnDti:TYOM? <br />'1L <br />May 2, 1983 <br />Mr. Dan Mathews, Reclamation Specialist <br />Mined Land Reclamat;on Division <br />423 Centenrial Building <br />131: Sherman Street <br />Denver, CO 80203 <br />Dear Mr. Mathews: <br />The following information and plans are submitted to comply with <br />Stipulation No. 1 included in Colowyo's Mining Permit No. C-019-81. <br />Enclosed is a surface water monitoring and well monitoring locat4'q map, <br />Water Monitoring Sites For Permit No. C-019-81 (Map 37). <br />.,. -. As stated during the application process, Colowyo will submit to <br />the -M.L.R.0. an annual report containing all of the data obtainei from <br />these and all other required monitoring and sampling programs. The first <br />annual report will be for the period January 1, 1983 throuch December 31, <br />1983 and will be submitted by April 1, 1984. <br />Water Monitorina Plan <br />The following plan is submitted to satisfy Stipulation No. 1 and <br />also includes the complete Surface 'mater Monitoring Plan. <br />1. Sediment Ponds - There are currently three existing sediinent <br />ponds, with valid N.P.D.E.S. Permits, controlling runoff from <br />disturbed areas at the mine and loadout site. A fourth pond *s <br />planned to be constructed and is shown as Pt. 004 on Water <br />Monitoring Sites For Permit No. C-019-81 (Mari 37). A ccoy of <br />Colowyo's N.P.O.E.S. Permit No. CO-0032832 is enclosed. <br />Following is a list of N.P.D.E.S. sampling requirements durinfl <br />periods of discharge. <br />Weeklv Sam_olino For: <br />a. Flow <br />b. PH (Field) <br />C. Conductivity (Field) <br />d. Temperature <br />e. Oil and Grease (visual) <br />Month1v 5amnlino For: <br />a. FIow <br />b. PH (Lab & Field) <br />Rule 4 Performance Standards 4.05-13 Revision Date: 6/23/08 <br />Revision No.: MR-91