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<br />h1r. Murari Shrestha - 2 - March 12, 1990 <br />2. For mine waste analyses, the following parameters should be analyzed in <br />addition to the topsoil/subsoil parameters listed above: <br />Exchangable Sodium Percentage <br />Boron <br />Selenium <br />Sulfate sulfur <br />Pyritic sulfur <br />Total sulfur <br />Acid/base potential <br />Analysis should be run on two separate composite samples, one from the <br />north slope plot area and one from the south slope plot area. <br />3. An existing reference area may be suitable for purposes of the study. I <br />would suggest a joint site visit to compare existing reference areas with <br />potential alternative reference sites in April or May. <br />4. Vegetation cover should be one of the parameters evaluated in <br />determinations of reveaetation success, along with herbaceous production <br />and woody plant density. <br />Test Plot Reclamation Plan <br />5. In the final submittal, a map depicting the test plot locations and a <br />diagram specifying plot layout will be needed. <br />6. Shouldn't the second depth increment be 24 inch rather than 14 inch? <br />7. Test plot seeding should be conducted during the normal fall planting <br />period, following approved final reclamation reveaetation procedures. <br />Areas adjacent to the test plots should be topsoiled concurrently with <br />the test plots to prevent excessive dessication of the test plot soils. <br />Post-Reclamation Investigation <br />8. If plots are seeded in Fall '90, first sampling should be Summer '91, <br />with subsequent sampling in Summer '92, '93 and '95. I would recommend <br />cover and woody density sampling in '91 and '92 with cover, woody <br />density, and production sampling in '93 and '95. <br />9. Sampling procedures should be described in detail with respect to method, <br />plot size and shape, transect length, etc. For example, an acceptable <br />strategy for cover sampling within plots could entail 5-10 systematically <br />or randomly located 100' transects with 5 systematically or randomly <br />spaced 10 point frame placements per transect. For production sampling, <br />a minimum of 10 randomly located lm2 quadrats per plot would be <br />appropriate. Woody density data could be estimated from 2 meter wide <br />belt transects run alona_ each cover transect. Sample adeauacv should be <br />set such that estimates are within l0U of the true mean at the 90; level <br />of statistical confidence. <br />