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In your inspection report comments which accompanied the results of our <br />testing, you noted that ammonia and nickel "concentrations of this sample <br />were near the vegetative unsuitability standards proposed by the Montana <br />Department of State Lands and the Wyoming Department of Environmental <br />Quality". Because we did not require Bear to test for these parameters, <br />should we collect another sample for testing? <br />2. Molybdenum and Selenium, both measured using the "Saturated Paste <br />Extraction" method for CMLRD, were measured using the "AB-DTPA <br />Extraction" and "Hot Water Extraction" methods respectively. How does <br />this affect the results describing the levels of these two elements in <br />the overburden? <br />3. Your comments regarding the CMLRD sample noted concern regarding sodium <br />levels, salinity, texture, ammonia, molybdenum, nickel, and selenium. <br />Following is a chart which compares the CMLRD sample for these parameters <br />with those of the Bear samples (as noted above, ammonia and nickel were <br />not required to be tested per Stipulation 26 ). <br />Conductivity Sodium SAR Texture Molybdenum Selenium <br />CMLRD 4.2 mmhos/cm 43.5 meg/1 44.6 SCL-SL 0.4 mg/kg 0.09 ma/kg <br />Sample (55-25-20) <br />B-seam 0.53 4.2 7.1 Coal -1 -0.01 <br />Floor (92-3-5) <br />Coal <br />Roof 2.16 19.2 27.2 coal/shale -1 0.07 <br />Rock (66-15-19) <br />Overlying <br />6-seam <br />Waste 2.84 25.1 31.1 coal/shale -1 0.05 <br />Pile (67-20-13) <br />Sample <br />#1 <br />Waste 2.71 24.0 33.9 coal/shale -1 0.04 <br />Pile (77-13-10) <br />Sample <br />#2 <br />Note: Negative sign "-" indicates the number is "less than" the method detection <br />limit. <br />In the Bear samples, conductivity and sodium are lower for the Bear samples <br />than for the CMLRD sample. SAR is also lower, though it is still above the <br />recommended maximum of 12. Texture is coarser in the Bear samples than it is <br />in the CMLRD sample. A quick comparison of other parameters with Wyoming and <br />Montana standards did not reveal other definite areas of concern. Please <br />review the enclosed analyses. <br />8761E/scg <br />