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<br />Section 7T9.14(a) Continued. <br />Rule 2.04.6 <br />In addition to the original data collected by Kerr, Several additional <br />samples have been collected at or immediately adjacent to the Kerr Mine <br />by other parties. Striffler and Rhodes (1981) collected textural and <br />compaction data from two (2) regraded spoil sites at the Marr Mine. Their <br />data is presented in Table 79, Physical Data for Topsoil and Spoil Samples <br />- Infiltration Plots. <br />Immediately adjacent to the Marr Mine, the Wyoming fuels Company at their <br />Canadian Strip Mine collected textural data from two (2) overburden <br />geochemical holes. Data from their Drillhole No. 1, which is closest to <br />the Kerr permit area were examined in the analysis. These data have <br />previously been submitted to the MLRD in the Wyoming Fuels Canadian Strip <br />Mine permit. The data are taken from Table III B of that document. <br />• Using these three (3) sources, a total of 63 textural samples were <br />evaluated. A more detailed evaluation of these data and their <br />implications on reclamation are found in Section 779.21. <br />Chemical Analyses of Overburden <br />During 1979 and 1980 Kerr collected a considerable amount of overburden <br />geochemical data relative to the entire Kerr permit area. <br />Samples were collected at five (5) foot intervals from drillholes for each <br />distinct overburden unit down to and including the stratum immediately <br />below the lowermost coal seam to be mined. These samples were analyzed <br />for the purpose of identifying, at a minimum, those horizons which may <br />contain potential acid-forming, toxic-foniing or alkalinity producing <br />materials. Specifically, the overburden in the mine plan area was sampled <br />by collecting cuttings or cores in and adjacent to the proposed mine plan <br />area. <br />i The vertical and areal density of sampling, sampling and testing <br />techniques, and chemical analysis parameters are based upon specific <br />requirements published in: 1) Soils and Overburden Guidelines, 1977, of <br />the Reclamation Division, Department of State Lands, State of Montana; 2) <br />779-16 a Revised -Arri1.1990 <br />