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Above Ground Storage Tank Yearly Inspection Checklist <br /> OURAY SILVER Mm,€s <br /> Tank ID: <br /> Tank Description: <br /> Time: <br /> Inspector: <br /> Inspector Signature: <br /> Inspection Guidance: <br /> • The annual aboveground storage tank (AST)inspection is intended for monitoring the external AST condition and its containment structure.This <br /> visual inspection shall be performed by the Mill Department, or other responsible representative designated by the Mill Manager, who is familiar <br /> with the site and can identify changes and developing problems. <br /> • Complete this checklist on an annual basis supplemental to the monthly-performed inspection checklists. Multiple tanks may be included on this <br /> checklist—use the comment column to identify to which tanks noted non-conforming conditions apply. <br /> • Inspect the following at all tanks identified within the MCP Plan: <br /> 1. AST shell and associated piping,valves and pumps including inspection of coatings. Visually inspect all surfaces of the tank, including the <br /> bottom. <br /> 2. Containment structures including examination for holes, washout, and cracking in addition to liner degradation and tank settling. <br /> 3. Test liquid level sensing devices to ensure proper operation. <br /> 4. Inventory spill kits. <br /> • A shaded cell designates an item in a non-conformance status and that action is required to address a problem. <br /> • Retain the completed checklists for 5 years with the MCP Plan or in the Environmental Records file cabinet. <br /> Status <br /> Item Yes No N/A Comments <br /> Is the containment structure in satisfactory condition? <br /> Drainage pipes/valves fit for continued service? <br /> Evidence of tank settlement or foundation washout? <br /> Cracking or spalling of concrete pad? <br /> Tank supports in satisfactory condition? <br /> Water able to drain away from tank? <br /> Grounding strap secured and in good condition <br /> Evidence of paint failure? <br /> Noticeable shell/head distortions,buckling,denting or <br /> bulging? <br /> Evidence of shell/head corrosion or cracking? <br /> Flanged connection bolts tight and fully engaged with <br /> no sign of wear or corrosion? <br /> Standing water on roof? <br /> Evidence of coating cracking,crazing,peeling, <br /> blistering on roof? <br /> Holes in roof? <br /> Vents free of obstructions? <br /> Emergency vent operable?(Lift as required) <br /> Insulation missing or exhibiting damage? <br /> Materials Containment Plan (MCP) Page 21 of 33 May 2021 <br />