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1 <br /> �r <br /> OUR FIBERGLASS TANKS PROVIDE <br /> UNMATCHED BENEFITS <br /> The ZCL I Xerxes Advantage <br /> ZCL I Xerxes double-wall underground storage tanks offer customers several significant design and performance <br /> differences that make them a superior choice to both steel tanks and other fiberglass tanks. <br /> RIB DESIGN FOR STRUCTURAL INTEGRITY <br /> As engineers, system designers and customers compare products, the rib geometry of our tanks is an important <br /> consideration in their analysis. Our uniform, high-profile ribs are fabricated directly into the tank cylinder. In some other <br /> tanks, ribs are incorporated as a separate step in the manufacturing process. Integrally constructed ribs increase the overall <br /> strength of the tank and create a structurally superior product. <br /> 30-YEAR WARRANTY MAINTENANCE-FREE <br /> ZCL I Xerxes offers a 30-year limited warranty with no The presence of water in the bottom of fuel tanks is a <br /> restrictions regarding water-bottom monitoring and common condition. Maintenance to remove it can be <br /> removal. In contrast, many steel tank manufacturers frequent and expensive. The requirement to do so, which is <br /> now have a 10-year rather than 30-year warranty, and found in most steel-tank warranties, can leave a steel-tank <br /> make ongoing maintenance and water-bottom removal a owner vulnerable to a denied warranty claim should the <br /> condition of warranty coverage. tank corrode internally. <br /> PARABEAM® TRUCHEK° CONTINUOUS LEAK DETECTION <br /> Our proprietary 3D glass fabric, Parabeam®, also enhances Our patented TRUCHEK® hydrostatic tank monitoring <br /> the overall structural integrity of our tank by creating a system for double-wall tanks is an easy, reliable method for <br /> bond between the tank walls, while providing a free- true continuous leak detection and tank-tightness testing. <br /> flowing interstitial space for monitoring capabilities. This Hydrostatic monitoring—now the industry standard for <br /> technology also eliminates the potential for false alarms continuous monitoring—gives tank owners greater peace <br /> (created by fluctuating reservoir levels)that can occur in of mind than with a simple liquid sensor, which can <br /> other hydrostatically monitored tanks. fail to detect an outer-wall breach. (See p. 10 for more <br /> information.) <br /> zcl.com 5 <br />