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Why Choose Our Fiberglass Sump? For decades, ZCL I Xerxes has established itself throughout North America as a leading manufacturer of long -life, corrosion - resistant fiberglass vessels and accessories that offer superior protection for the environment. The internal environment of containment sumps is very corrosive. The use of ethanol, ultra-low sulfur diesel (ULSD) and biodiesel fuels, and the corrosion damage caused by these fuels and resulting vapors is increasing. Our fiberglass containment sumps offer customers a corrosion -resistant, long-term option for the storage of liquids in underground installations. A Variety of Sump Options Whether a customer is installing a new underground system or is retrofitting an existing installation, containment sumps are used on nearly all double-wall tanks today. We supply containment collars and sumps as a package to provide secondary containment around tank fittings, piping, pumps and manways. Customers have the option of either dry interstitial monitoring or hydrostatic monitoring. Most double-wall containment sump installations are equipped with hydrostatic monitoring for the same reasons that customers choose it as a monitoring method for double-wall tanks — continuous monitoring of both walls 24/7. Our containment sumps come in a variety of models, sizes and cover/top options. MODELS & MONITORING OPTIONS • Round and flat -sided • Double-wall sump with hydrostatic monitoring • Double-wall sump with dry monitoring • Single-wall sump COVER/TOP OPTIONS • 32 -inch watertight cover • 38 -inch watertight cover • 32 -inch friction -fit cover • Open top option THE ZCL I XERXES ADVANTAGE SIZE OPTIONS • 42 -inch diameter • 48 -inch diameter • 36 -inch to 72 -inch height • Available in shallow and deep burial heights ZCL I Xerxes double-wall underground storage tanks offer customers several significant design and performance differences that make them a superior choice to both steel tanks and other fiberglass tanks. • Corrosion -Resistant Inside and Out • 100% Premium Resin and Glass • Flexible Design and Installation Options FUEL COMPATIBILITY Our UL -listed (1316) and ULC -listed (5615) double-wall fiberglass tanks are listed as compatible with 0-100 percent ethanol storage and warranted for the full range of ethanol - blended gasoline. Since the UL listing for steel tanks does not require ethanol compatibility testing, this is another distinct advantage of fiberglass over steel. PARABEAM® To create a double-wall sump that is structurally strong, ZCL Xerxes uses Parabeam'', our patented 3D glass -reinforcement material, to bond the sump walls. This is the same design concept that has made our double-wall tanks the most widely used underground tanks in North America. By using our unique woven -glass to create the interstitial space, our sumps are built to avoid weaknesses such as structural collapse and false monitoring alarms due to flexing walls. • Maintenance -Free • TRUCHEK® Continuous Leak Detection • 30 -Year Limited Warranty CORROSION RESISTANCE ZCL I Xerxes tanks and sumps are made of fiberglass, which means they are inherently resistant to corrosion. Because they are corrosion -resistant inside and out, you'll have the peace of mind of choosing products that help preserve and protect the environment. You'll also enjoy a lower cost of ownership than with steel tanks, which corrode over time and require maintenance. EXTENSIVE THIRD -PARTY QUALITY TESTING As further evidence of their durability, ZCL I Xerxes double- wall sumps have passed extensive third -party testing to verify that they withstand interstitial pressure levels that other sumps cannot. Therefore, customers can be assured that our containment sumps are superior to other options in the marketplace.