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Client: Gill Express <br /> 1022 Frontage Road <br /> Ripon, California 95366 <br /> STI Inspection Data: 1 V28/18 <br /> STI SP001 Certified Inspectar: Wesley P. Greenwood, STI Cued Inspector No.: AST-1832 <br /> Average ee I Estimated Estimated <br /> Sides and Th)nn6st8lMsSideand RemainingSide <br /> Base Plale(s) ahtf Bsse ,:. ... Base PIeOe(s) and Base <br /> Certified UTT P(ate(i) uTT. Original pistols) <br /> AST Shell AST Length Width Holghte Capacitf Thicknesse Wdknelle .: % . Thickness Thieknosso <br /> Number Contents Material Orientation - (Feet) (Feet) (Feet) (Gallons) (Inches) : ' (Inohes) (Inches) (Percentage) Comments - <br /> NoaccasstosidesorbaseotAST. Thk:knessmeasurementswere <br /> taken M various points on the top, north, west, asst, and limned <br /> Welded areas ofthe south secondary containment structure, The south <br /> AST-1 Used Oil Horizontal 8.4 5.8 3.3 1,206.7 0,186 0,184 0. 187 98 aide of the secondary containment structure is located dkectiy <br /> Steal adjacent to the north exterior wait of the Facility Maintenance Shop <br /> which limited access to the south side of the secondary <br /> containment structure. <br /> Estimated <br /> Average Top Top Plate Estimated <br /> Plate UTT Original Romainingetop <br /> Thickness Thickness Plate Thickness <br /> (Inches) (Inches) (Percentage) Comments <br /> The secondary containment structure has sufficlontaapackyto <br /> 87 retain a spill from the AST. The secondaryconthinment structure <br /> top was manufactured using a steel plate thickness that is thinner <br /> North Side Plato Measurements South Side Plate Measurements 0.141 0.158 then the sides end baso otthe secondary containment structure. <br /> 0.187 0,185 <br /> 0.187 0.185 <br /> 0.187 0.185 Ngtct <br /> ,.186 0.187 A. Capacity of secondary containment strucwro is based upon the height of the height of the access opting invert (3.3 feet). <br /> ^ 185 B: Meatuledcapecityofthosocondarycoe :imentstructure. <br /> 0,186 C: Average secondary containment atucture shell plata thickness of all the Ultrasonic Thickness Testing (UTT) point readings. <br /> D: Estimated remaining steel thickness of the secondary containment structure based on thinnest UTT rearing pent(s). <br /> East Side Plate Measurements West Side Plate Measurements Thinnest AST side and base pistols) UTT pont reading(s). <br /> 0.188 0.185 Thinnest AST top plate UTT pont mading(e). <br /> 0.187 0.185 <br /> 0.187 0, 187 <br /> 0.186 0. 185 <br /> 0.184 0.186 <br /> 0.187 _ . 0.184 <br /> Too Plata Measurements Base Plate Measurements <br /> 0.138 0.186 <br /> imam 0ASS <br /> 0.139 0.186 <br /> 0,139 0.186 - <br /> 0.141 0.186 <br /> 0.141 0. 186 <br /> 0.143 0.185 <br /> 0.140 0. 186 <br /> 0.140 0.168 <br /> 0.147 0,186 <br /> 0.149 0.185 <br /> 0.139 0.186 <br /> 0.186 <br />