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~~ <br />' order that the reapplied soil material could be sampled separately. The subsoil depth increments for these <br />profiles remained the same as those for all other sample sites. Appendix 1 contains the field sheet <br />~' completed at each of the 10 sampling sites. <br />n) Approximately one-half gallon of overburden or soil material was collected from each depth <br />~~ increment. This material was placed in a polyethylene zip-lock bag and sealed. The sample site number <br />and depth increment was written on the sample bag for identification purposes. A total of 60 samples (10 <br />a~ sample sites x 6 samples per site) were collected from the disturbed area. <br />k',~ The collected samples, after being air-dried, were delivered to the Cooperative Extension Service <br />~~~~ soil laboratory located on the Colorado State University (CSU) campus. Following sample preparation, the <br />~~, laboratory conducted a'routine' analysis on all samples submitted. In addition, an estimate of the coarse <br />~S fragment content, by volume, was made. The "routine' suite of analyses included the following <br />parameters. <br />f%~ <br />~~~ <br />pH Phosphorus (ppm) <br />Electrical conductivity (mmhos/cm) Potassium (ppm) <br />Lime estimate Zinc (ppm) <br />~, Percent organic matter Iron (ppm) <br />1"'a/ Texture estimate Manganese (ppm) <br />NO3-N (ppm) Copper (ppm) <br />'s~" <br />On August 25, 1994, a telephone discussion was held with Mr. Tony Waldren of the Colorado <br />~;, Division of Minerals and Geology (Waldren 1994). The purpose of the discussion was to determine the <br />~~.~ necessity of conducting additional analyses on the 60 samples collected at the Raton Creek Mines site <br />with reference to a topsoil substitute suitability evaluation. Candidate parameters included saturation <br />~~ <br />~~~, percentage, sodium adsorption ratio, selenium (ppm), boron (ppm), percent organic carbon, and acid- <br />base potential (accounting). As a result of these discussions, it was concluded that saturation percentage <br />~~ and percent organic carbon would not be required since sufficient alternative data (texture, coarse <br />~. <br />fragment content, and percent organic matter) were available as a result of the laboratory analysis <br />described above. Following the general procedures used by the CSU soils laboratory, SAR would be <br />~~ <br />required on any sample having a pH value greater than 8.5. (In this context it should also be noted that the <br />'`°; vast majority of samples had pH values ranging from 7.0 to 8.0 and electrical conductivity values of less <br />t..; than 4.OJ <br />Both selenium and boron would be required to be run on all surface (0-6") samples except where a <br />soil cover was present. In such cases, the laboratory analyses would be run on the next depth increment <br />C down to insure that all analyses were conducted on overburden fill material. No analyses would be run on <br />~+ 3 <br />