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,.~. t.: ~. • • YVCC Yampa Valley Coal Corporation 129588 Routt County Road #27. Oak Creek, CO 80467 • (303) 879-3800 Niay 27, 1987 Mr. Dan Mathews Reclamation Specialist Colorado Mined Land Reclamation Division 1313 Sherman Street, Room 423 Denver, Colorado 80203-2273 Dear Mr. Mathews, RECEIVED ..._- JUN U 11987 MINED u+~.u RECLAMATION DIVISION Colorado Yampa Coal Company (CYCC) has analyzed 15 feet of the roof and 10 feet of the floor material for dri71 holes 026-87-1 and 026-87-2 plus 1.8 feet of interburden and 3.0 feet of stringer coal from drill hole 026-87-2. As discussed, CYCC would submit the geochemical analysis results for the drill holes. The data are enclosed and a discussion has been incorporated into Rule 2.04.6 (1)(b). All of the samples were analyzed for the following parameters: pH, electrical conductivity, calcium, magnesium, sodium, sodium adsorption ratio, lead, nicker, cadmium, organic sulfur, pyritic sulfur, sulfate sulfur, total sulfur, ammonium nitrogen, nitrate nitrogen, acid base potential, and neutralization potential. As discussed with Cathy Begej, Colorado Yampa Coal Company is submitting the Wolf Creek Coal Seam sulfur analysis for drillholes sampled in 1984. The coal seam data was obtained from holes 026-84-3, 026-84-14, 026-84-15, 026-84-16, 026-84-17, and 026-84-29. The data are presented within Table 19, Wolf Creek Coal Seam Sulfur.Agalysis. .Please insert Table 19 with the other confidential information in Volume VI. ' The revised pages 2.04-1$ through 2.04-19e are enclosed along with revised Table ''6A, Suppleme~~'T- Overburden na ys's List, and Table 7A, Supplemental Overburden Chemical Data. The core logs for the two drill holes are to be included with Exhibit 8, Drill Hole Logs. Also included with this submittal are Maps 7A and 76, Geology, Map 8A, Wadge Seam Coal Isopach and Map 8B, Wolf Creek Seam Coal Isopach. ~ ~ L., ~ n 0 ~~ ~ v~A~ /~ / w ~y 1, )U`~ ~ ~ ~ ~}L C+~ `l ~ t iaV(L Jy' ,~r