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No Comment 6.4.15 EXHIBIT O- Owner(sj of Record of Affected Land (Surface Area) and Owners of Substance to be Mined No Comment. 6.4.16 EXHIBIT P- biunicipalities Within Two Miles No Comment. 6.4.17 EXHIBIT O- Proof of Mailing of Notices to County Commissioners and Soil Conservation District No comment. 6.4.18 EXHIBIT R-Proof of Filing with County Clerk and Recorder No comment. 6.4.19 EXHIBIT S- Permanent Man-Made Structures Where the mining operation will adversely affect the stability of any significant ,valuable , or permanent man-made structure located within 200 feet of the affected land, the applicant may either: (a) provide a notarized agreement between the applicant and the person(s) having an interest in the structure, that the applicant is to provide compensation for any damage to the structure; or (b) where such agreement can not be reached, the applicant shall provide and appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation. As noted in the pre-operation inspection, and as identified on maps submitted with the application, there are two structures within two-hundred feet of the proposed expansion azea to the east of the office/processing area that will need to be addressed via item (a) or (b) above. Those structures are U.S Hwy 50 and the ASTF railroad tracks on the North and South sides respectively of the proposed affected area addition. It may be that none of the proposed activities which will be located within 200 feet of these structures will affect their stability, however, this should be reviewed and a negative determination made if that is the case. 6.5 GEOTECHNICAL STABILITY EXHHIIT It is the Division's understanding from speaking to the previous mine manager that explosives may be used on occasion during the backfilling process. Apparently the charges are set off underwater along the angle-of-repose out slope to cause the sand to slump or slide into the void that is being filled, thereby, allowing the surface fill point to remain in one location for longer periods of time and/or reduce the push distance for surface equipment. The Division has no objection to this procedure, however, Rule 6.5(4)