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• 2004 SOIL AND REGRADED OVERBURDEN SAMPLING AT SENECA COAL <br />1.0 Introduction <br />Soil and regraded overburden (spoil) sampling was conducted at Seneca Coal during <br />2004. The sampling was conducted by James Nyenhuis, Certified Professional Soil <br />Scientist (ARCPACS #2753). The following is a list of all completed soil and regraded <br />spoil sampling during 2004: <br />1. Yoast Mine Soil Sampling (June 2004) — 25 randomly distributed locations were <br />sampled in June for reapplied topsoil. Sample depth averaged 21 inches. Samples <br />were collected and delivered to Colorado State University's Soil Testing Laboratory <br />(CSU) for analysis. The samples were numbered YTS -04 -1 through YTS- 04 -25. In <br />addition, two pits were dug by backhoe to a depth of 6 feet. A complete soil profile <br />description was completed and the reapplied topsoil was sampled to the underlying <br />overburden contact. These soil samples were also delivered to CSU for analysis, and <br />were numbered YTS -04 -PI (0 -6 ", 6 -16 ", and 16 -22 ") and YTS -04 -P2 (0 -12 ", 12- <br />22", and 22 -33 "). The attached map shows all soil sample and backhoe pit locations. <br />2. 2W Mine Soil Sampling (June 2004) — 25 randomly distributed locations were <br />sampled in June for reapplied topsoil. Sample depth ranged from 18 to 24 inches. <br />• Samples were collected and delivered to CSU for analysis. The samples were <br />numbered 2WTS -04 -1 through 2WTS- 04 -25. In addition, one pit was dug by <br />backhoe to a depth of 6 feet. A complete soil profile description was completed and <br />the reapplied topsoil was sampled to the underlying overburden contact. These soil <br />samples were also delivered to CSU for analysis, and were numbered 2WTS -04 -P1 <br />(0 -12" and 12 -24 "). The attached map shows all soil sample and backhoe pit <br />locations. <br />3. 2W Mine Spoil Sampling (June 2004) — 25 randomly distributed locations were <br />sampled in June for regraded spoil. Sample depth was 2 feet. Samples were <br />collected and delivered to CSU for analysis. The samples were numbered 2WRS -04- <br />I through 2WRS- 04 -25. The attached map shows all regraded spoil sample locations. <br />4. 2W Mine Spoil Sampling (December 2004) —12 randomly distributed locations at the <br />2W North Block were sampled for overburden spoil. The sampling involved digging <br />through the reapplied topsoil to the overburden contact and then sampling of the <br />upper foot of the overburden spoil material. Samples were collected and delivered to <br />CSU for analysis. The samples were numbered 2W- RS -04 -30 through 2W- RS- 04-41. <br />In addition, 4 randomly distributed locations at the 2W South Block were sampled for <br />"rough- graded spoil material" south of the active dragline pit. The overburden spoil <br />is from the Wolf Creek/Sage Creek seam with acid potential. Samples were collected <br />and delivered to CSU for analysis. The samples were numbered 2W- RS -04 -26 <br />• through 2W- RS- 04 -29. The attached map shows all sample locations. <br />