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Mr. Rick Mills -5- July 13, 1984 The proposed methodology for conducting the monitoring is unclear. It sounds as though only a visual monitoring plan is proposed. Quantitative measurements provide a better indication of what the revegetation success is. Therefore, the monitoring program will need to be changed to include quantitative measurements, as well as the frequency. Stipulation No. 14 Empire was required to verify the accuracy of the post-mining topography and volumetrics presented on Table IV-46 by submitting a demonstration that the methodology used was in compliance with Rule 4.14. Empire submitted the mathematic formula which was used to calculate volumes. Information submitted by Empire is adequate to determine volumetrics and to verify the proposed post-mining topography. Stipulation No. 18 This stipulation required Empire to identify re-created drainages and demonstrate that the configurations are stable. Empire identified one drainage location on Map IV-10 and provided designs and proposed construction of the channel which demonstrates that it will be geomophically stable. Stipulation No. 19 Map IU-2 had to be amended as required by this stipulation. The map has been adequately amended. Stipulation No. 20 This number was accidentally missed and therefore there is no stipulation attached to it. Stipulation No. 21 The deadline for this stipulation is October 13, 1984. Stipulation No. 22 This stipulation required the monitoring of residences. Empire has committed to include the residences in their subsidence monitoring program and report the results in their semi-annual subsidence report. Stipulation No. 23 Empire submitted a semi-annual subsidence report format as required by this stipulation. The format is acceptable if the "Subsidence Data" summary sheet is amended to include a tabular summary of horizontal survey location data and cumulative horizontal differences.