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<br />Richard D ldmm <br />Governor <br />DEPARTMENTOFNATURALRESOURCES <br />D Mome Pascoe E.ecwi~e Onecior <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON, Director ' <br /> <br />• • <br />August 9, 1983 <br />Mr. John Walters <br />Salt Creek Mining Co. <br />P.O. Orawer L <br />Fruits, Colorado 81521 <br /> <br />Re: Munger Canyon Sttpulatlon No. 6 and Mesta ane Canyon Sttpulation No. 6 <br />File Nos.: C-020-81 and C-004 80 <br />Dear Mr. Walters: <br />As we dlsr.ussed to a phone conversation on August 2, 1983, I am writing <br />this letter to clarify the present status of stipulation No. 6 on both <br />the Munger Canyon and McClane Canyon permits. <br />The samples of dlsturberf soil material taken from the Munger and McClane <br />benches were r.omposlte samples taken over a depth of four feet. The <br />analysts indicates sltyhtly elevated SAR levels at both sites, an <br />elevated salt level at Mr,Clane Canyon, and a very high pH at Munger <br />Canyon. None of these levels would create a problem during reclamation <br />1f proper cultural treatments are used, However, it 1s not evident <br />whether one distinct layer may be elevating these levels or whether these <br />chemical character151tcs are uniform throughout the four foot sanlpllny <br />depth. <br />In general, the surface layer 1s the zone where any degredatton of soil <br />characteristics occurs on a mir7ing operation through such things as <br />deposit ton of coal, watering for dust suppression, and deposition of <br />salts leached from nearby coal stockpiles. if the surface layer has been <br />degraded by surface acttvltles, this layer can easily be isolated during <br />regrading. <br />To lieterm117e whether the surface layer of the McClane and Munger Mine <br />benches have been degraded by surface operations, and to determine <br />whether high leve +, ir7 the surface layer elevated the salt, SAR, and pH <br />levels of the four Foot composite samples, Salt Creek must analyze a <br />surface sample front each site. Each sample should be taken to a 51x Inch <br />depth. To maximize the information gat{7ered, the sample analyzed from <br />each site should be a composite from several locations on each bench. <br />These samples only need to be analyzed for pH, electrical conductivity <br />and sodium absoptton ratio. <br />423 Centennial Building. 7373 Sherman Street Denver. Colorado 80203 Tel (3031 866-3567 <br />III IIIIIIIIIIIII III <br />'mil <br />