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is required to be addressed as a petition for modification under Section <br />101(c) of the Mine Act. <br />Information that may be useful in the review process is listed at Appendix <br />A. <br />D. The district ventilation group will take the steps necessary to have the <br />subdistrict/assistant district manager, field office supervisor and a designated <br />inspector provide input into the review process. A method of documenting this <br />input should be established but the format and process is at the discretion of the <br />district manager. <br />E. When the ventilation plan documents and review forms are completed, they will be <br />forwarded to the Chief of Engineering Services/Engineering Coordinator. The <br />coordinator is responsible for making a recommendation of approval or <br />disapproval to the district manager. <br />F. It is recognized that many changes or revisions are proposed that address specific <br />portions of the approved plan. Therefore, all steps in Paragraph C may be <br />unnecessary in all situations. The Engineering Coordinator may expedite the <br />review process where the nature of the revision warrants in that case. The persons <br />indicated in Paragraph D will be informed at the earliest opportunity concerning <br />the details of an approved revision. <br />G. After a thorough review of a proposed plan or revision, the operator must be <br />notified in writing whether the proposed plan or revision is acceptable. <br />If the plan or revision is acceptable, the district manager will send written <br />notification to the operator that approval is granted. <br />2. If a separate standard or a provision of a ventilation plan has been <br />determined by MSHA to be unsuitable to the particular conditions at the <br />mine, the district manager may require revisions by the operator. MSHA <br />will advise the operator of the deficiencies of the proposed plan or revision <br />for which approval is denied. The operator is then given an opportunity to <br />discuss with the district manager the problems identified and potential <br />solutions. If provision(s) cannot be approved, MSHA procedures <br />established in the Program Policy Manual, Volume V, V.G-4 apply. <br />