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3.2. Annual Engineer Inspections and Reporting <br />Subsequent annual inspections will be performed by a qualified dam safety professional. The <br />field examination procedures for the annual inspections will be generally the same as used for <br />the initial detailed inspection. If the field inspection is performed by the same engineer that <br />conducted the initial detailed inspection, a detailed review of the hydrologic/hydraulic and <br />geotechnical calculations and data may not be necessary. The Project Data Report, the Initial <br />Detailed Inspection Report, and all quarterly and subsequent annual inspection reports should be <br />available to the inspector for review, as needed. <br />The annual inspections will be documented on the Tailing Facility Inspection Form (Appendix <br />A), with accompanying photographs as appropriate. Any actions taken under the <br />recommendations of the previous inspection, including additional analysis, data collection, <br />instrument installations and structural maintenance will be reviewed. A letter report will be <br />prepared documenting the actions that were carried out under the previous recommendations, <br />and verifying that the impoundment has been maintained and monitored in accordance with the <br />recommendations of the dam safety engineer. A certified copy of the Annual Inspection Report <br />will be kept on file at the mine site and a copy will be sent to CDRMS within 20 working days <br />after the annual field inspection. <br />3.3. Quarterly and Special Inspections by BMRI <br />3.3.1 Quarterly Inspections <br />Maintenance inspections will be performed quarterly by qualified BMRI personnel. Typically <br />the on -site maintenance personnel most familiar with the project will conduct these inspections. <br />For the initial quarterly inspection, it is recommended that the dam safety professional who <br />performed the initial detailed inspection accompany the maintenance inspector. The inspection <br />observations, evaluations, and recommendations will be documented on the Quarterly Inspection <br />Form, attached as Appendix B to this report. The quarterly inspection reports will be retained on <br />site and a copy of each report will be submitted to the CDRMS on a quarterly basis. Quarterly <br />inspections will include checking at minimum the following: <br />• All exposed surfaces of the dam including the upstream slope and beach area, dam <br />crest, and downstream slope for evidence of cracks, deformations, erosion, sliding or <br />slumping; <br />• Dam toe, downstream area and abutments for signs of seeps, springs, boils, or unusual <br />wet spots, recording the location, pattern, quantity and character of discharge and its <br />variation with tailing pond water level; <br />• Instrument installation conditions for signs of physical damage, malfunctioning or <br />needed maintenance; and <br />• All exposed surfaces of the water delivery and pump -back pipelines for evidence of <br />physical damage, cracking, joint separation, or needed maintenance. <br />Any noted conditions should be compared to previous inspection reports for similar or changing <br />conditions. For the quarterly inspections, the inspector shall: <br />San Luis Project <br />Tailing Dam Safety Inspection and Reporting Program <br />Page 6 of 10 <br />