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-9- <br />• EXCESS SPOIL DISPOSAL SITE CONDITIONS <br />The proposed West Pit Excess Spoil Disposal Site is located within Section 4, <br />T3N and Section 33, T4N; R93W in Moffat County, Colorado. Spoil will be <br />constructed in a north trending valley which turns northwest just before its <br />confluence with Taylor Creek. The site elevations range from about 7,300 on the <br />east side of the valley to about 6,830 near the toe of the proposed spoil. Figure I <br />shows the approximate limits of the proposed spoil. The east boundary of the spoil <br />will be on awest-facing slope. The west edge of The spoil will stop just below an <br />existing ridge which parallels the valley bottom. <br />The extension of the box cut west of the spoil area will likely involve <br />construction of additional smaller excess spoil in a second tributary valley to <br />Taylor Creek. Colowyo plans to extend spoil across this second valley to maintain <br />• surface flows from the drainoge area to the south. To occomplish this, spoil <br />materials will be placed in the existing valley north of the limit of the box cut to <br />blend the spoil into the valley to the north. We are not certain that this small <br />area will be classified as "Excess Spoil" according to regulations of the Colorado <br />Mined Land Reclamation Board for Coal Mining. However, we have considered <br />stability and performance of this fill area as part of this investigation. <br />We looked for evidence of springs or seeps evithin the disposal site during our <br />site visit. We found no indications of these conditions. Our site inspection was <br />performed in late autumn. We understand Colowyo geologic personnel have seen <br />no evidence of springs or seeps in the excess spoil area during other times of the <br />year. <br />During our site visits, we observed several existing landslides along the <br />Taylor Creek drainage. One of these was located west of the spoil disposal site <br /> <br />