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XERXES® Tank Installation Checklist <br /> CorWOMT" <br /> Fiberglass Underground Storage Tanks <br /> Single-Wall(SWT), Double-Wall (DWT), Multicompartment(MCT)and Oil/Water Separators(OWS) <br /> Complete this checklist,and keep it with copies of any written authorizations for variations and/or deviations received from Xerxes. <br /> • Date of Installation Tank Size and Capacity <br /> • Tank Type SWT DWT MONITORING-FLUID DRY MCT OWS (Circle those that apply.) UL Number <br /> • Site Owner <br /> • Site Address <br /> STREET CITY STATE ZIP <br /> • Installing Contractor <br /> CONTRACTOR NAME STREET CITY STATE ZIP <br /> • On-Site Supervisor <br /> PREINSTALLATION1. Verified by: <br /> A. Visual Inspection:No evidence of damage(holes,cracks,gouges)in tank.(Document any damage found.)..................................... <br /> B. Monitoring-Fluid Tanks: 1.Check and record monitoring-fluid level in reservoir. .............................................................................. <br /> 2.Check for monitoring fluid inside and outside of tank............................................................................... <br /> C. Physical Test: Preinstallation air/soap test completed in accordance with installation instructions....................................................... <br /> D. Backfill Material: (Indicate which type.) 1.Pea gravel or crushed stone as specified by XERXES......................................... <br /> 2.Other(Requires specific approval by XERXES—describe.)................................. <br /> E. Excavation: Hole dimensions are correct per installation instructions for appropriate conditions......................................................... <br /> F. Internal Diameter Measurement: The intend diameter of the tank is measured and documented(Initial Internal Diameter in SECTION 4 below).... <br /> G. Geotextile Utilized: (Indicate one.) 1.Yes 2.No.......................................................................................................................... <br /> H. Hole Condition: (Indicate one.) 1.Dry hole(Water is not anticipated to reach tank—area is not subject to flooding.)................ <br /> 2.Wet hole(Excavation may trap water—area is subject to flooding.)...................................... <br /> I. Traffic Loads: (Indicate one.) 1.Traffic loads anticipated.......................................................................................................... <br /> 2.No traffic loads anticipated..................................................................................................... <br /> J. Anchoring: Performed in accordance with installation instructions. 1.Deadmen 2.Full slab................................................... <br /> K. Fittings and Other Metal Components: Coated to protect against corrosion...................................................................................... <br /> INSTALLATION2. DURING Verified by: <br /> A. Backfill-material bed is level and is a minimum of 12 inches deep,over native soil or slab,before setting tank....................... <br /> B. Tank Spacing: Tanks are spaced correctly from each other and from excavation according to instructions......................................... <br /> C. Visual Inspection: No evidence of damage is found after setting in hole.............................................................................................. <br /> D. Hold-down Straps: Positioned and secured according to installation instructions.(See SECTION 6.4.of Installation Manual.)......... <br /> E. Backfill Compacted: Material has been tamped and/or compacted to fill all voids around tank........................................................... <br /> F. Tank is properly ballasted during backfilling: (wet-hole installation only)......................................................................................... <br /> G. Tank(s)are buried at proper depth to conform to appropriate conditions: (wet,dry,traffic or no traffic)....................................... <br /> 3. POSTINSTALLATION Verified by: <br /> A. Physical Test: Airlsoap test is completed according to installation instructions.................................................................................... <br /> B. Internal Diameter Measurement: The internal diameter of the tank is measured and documented(Final lntemalDiameter inSEC11ON4below).... <br /> C. Monitoring-Fluid Tanks: 1.Check and record monitoring-fluid level in the reservoir (inches)......................................... <br /> 2.Check for monitoring fluid inside tank...................................................................................................... <br /> D. Containment Sump Water Test: Fill the containment sump assembly with water to check for leaks. ................................................. <br /> E. Installation Manual: Deliver Installation Manual and Operating Guidelines to owner. ......................................................................... <br /> 4. DEFLECTION <br /> All tanks must be measured to determine vertical deflection. Follow deflection-measurement instructions(SECTION 14)in the Installation Manual. <br /> An initial internal-diameter measurement is taken and recorded as a point of reference.Subsequent internal-diameter measurements show tank deflection <br /> and can be compared to the table below. Take each measurement from the same fitting using the same procedure. <br /> External Tank <br /> Internal-Diameter Measurements End Center End <br /> Diameter 4 6 8 10 12 Initial Internal Diameter(before backfilling) <br /> (Feet) Final Internal Diameter(after backfilling) — — <br /> Allowable Initial Internal Diameter minus <br /> Deflection 112 3/4 1-114 1-112 1-314 Final Internal Diameter=Deflection <br /> (Inches) Mark the location where intemal-diameter <br /> Verified by: measurements were taken. <br /> 27 <br />