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PO Box 1928 STI SP-001 <br /> POWERS BENi794510 <br /> TEL 33334 3400 STOCKTON EAST WATER DISTRICT STOCKTON,CA <br /> FAx 707 922 2284 <br /> ENGINEERING&INSPECTION,INC. www.powersei.conn Tank 19 <br /> Contents <br /> ExecutiveSummary......................................................................................................................................2 <br /> Tank Suitability for Service Statement..........................................................................................................4 <br /> Next Inspection Schedules....................................................................................................................4 <br /> Required Repairs for Continued Service...................................................................................................4 <br /> Considerations or Recommended Repairs ...............................................................................................4 <br /> Non-Mandatory Items................................................................................................................................5 <br /> Inspector's Certification.................................................................................................................................6 <br /> 1. Tank Inspection Summary........................................................................................................................8 <br /> 1.1.Tank Details........................................................................................................................................8 <br /> 2. Inspection Checklists and Summary...................................................................................................9 <br /> 2.1ST1 SP001 AST Record General Information ......................................................................................9 <br /> 2.2Monthly Inspection Checklist..............................................................................................................10 <br /> 2.3 Annual Inspection Checklist..............................................................................................................12 <br /> 3. Ultrasonic Thickness Test.......................................................................................................................15 <br /> 4. Calculations.............................................................................................................................................16 <br /> 4.1. Shell Thickness ................................................................................................................................16 <br /> 4.3. Venting Analysis...............................................................................................................................17 <br /> 5. Drawings.................................................................................................................................................17 <br /> APPENDIXB: PHOTOS ...............................................................................................................................21 <br /> SIGNIFICANT PHOTOS ................................................................................................................................21 <br /> GENERALPHOTOS.....................................................................................................................................25 <br /> STI-SP001 Stockton Water District Tk 19 Stockton,CA 2019 Rev O..docx Date Printed:2/4/19 <br /> ©2018 PE&I Inc. <br /> Page 7 <br />