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SP001 Tank Inspection Report <br />Interstate Truck Center, 2110 S. Sinclair Ave. Stockton, CA <br />September <br />2024 <br /> <br /> Strandberg Associates 1(650) 796.9732 john@strandbergassociates.com 17 <br /> <br /> <br />Years to Next Inspection Determination <br /> <br /> <br />course 1 course 2 course 3 course 4 <br />in.0.279 0.269 0.276 0.286 <br />in.0.283 0.272 0.269 0.287 <br />in.0.291 0.277 0.277 0.290 <br />in.0.299 0.276 0.279 0.294 <br />in.0.275 0.276 0.276 0.297 <br />in.0.278 0.273 0.283 0.289 <br />in.0.291 0.272 0.288 0.293 <br />in.0.293 0.276 0.284 0.298 <br />in.0.278 0.275 0.264 0.292 <br />in.0.277 0.271 0.274 0.290 <br />in.0.292 0.271 0.278 0.292 <br />in.0.289 0.274 0.280 0.300 <br />average, in 0.285 0.274 0.277 0.292 <br />std. dev., in 0.008 0.002 0.006 0.004 <br />age, yr 29 29 29 29 <br />6 sigma, in 0.046 0.015 0.037 0.025 <br />corrosion <br />rate, in/yr 0.002 0.001 0.001 0.001 <br />allowable <br />minimum <br />tank wall <br />thickness, <br />in <br />0.069 0.066 0.067 0.071 <br />paint tare, <br />in 0.010 0.010 0.010 0.010 <br />corrosion <br />allowance, <br />in <br />0.207 0.198 0.201 0.212 <br />est. <br />remaining <br />life, yr <br />131 393 156 247 <br />Estimated Remaining Life by UTG