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Hazardous Waste Tank System July <br /> Written Assessment per CCR Title 22 <br /> Applied Aerospace Structures, Inc., Stockton, CA 95206 2017 <br /> Hydrostatic Calculation: Applied Aerospace Structures <br /> Recirculation Tank <br /> Tank wall thickness, in 0.22 <br /> Tank Dia. In. 38.00 <br /> Depth of fluid in tank, ft. 3.60 <br /> S.G. of Fluid 1.00 <br /> Pressure of fluid at bottom of tank, psi 1.56 <br /> hoop stress at bottom of shell, psi 134.73 <br /> Yield Stress LDPE, psi 2000.00 <br /> joint efficiency 1.00 <br /> effective allowable stress, psi 2000.00 <br /> Safety Factor 14.84 <br /> Tank is Okay for Hydrostatic <br /> • The foundation was free of cracks, spalling, settling or other defects <br /> that would affect its integrity. <br /> Integrity testing findings: Based on the above noted integrity test and the <br /> results obtained from h t test, the tank has sufficient integrity for its intended <br /> use. Initials: <br /> AUG 0 2 2017 <br /> ENVIRONIVtENT!\L Hr-ALTH <br /> DER, RTI%,LNT <br /> Strandberg Associates 1(866) 388-0404 rwaterquyCcDrwatergLty.com 26 <br />