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' ITEM #16 & 17 ' SUPERIOR PROTECTION WITH HYDROGUARD° The HydroGuard® System is the most dependable storage system available. HydroGuard combines the UL listed double-wall tankand double-walltanksumpsforafully integrated hydrostatically monitored storage system.HydroGuard also comes with a deadman anchoring system, completing the underground storage solution. ' As the name suggests, the HydroGuard System utilizes hydrostatic pressure to provide a proven means of monitoring for leaks 24 hours I ' a day, 7 days a week. In fact, our hydrostatic monitoring system has been certified as a continuous leak detection system by the National Work Group on Leak Detection Evaluations,(NWGLDE). ' Unlike typical storage systems, HydroGuard provides 360° secondary _1 containment of not only the stored product in the tank but the ' critical piping components above the tank. CSI's double-wall tank sumps are state-of-the-art including built-in brine reservoirs and street accessible reservoir sensor or housing. The turbine and fill/vapor 9 p sumps are continuously monitored for the ultimate in underground ' fuel storage protection. The HydroGuard System is a complete hydrostatically monitored double-wall storage system. The HydroGuard System was designed to exceed the most stringent ' regulations and storage requirements, like California's AB 2481; and also comes with our 30-year structural and corrosion warranty. OUTER WALL BREACH HIGH GROUNDWATER If the groundwater is below the tank top,the non-toxic Ifthe groundwater is over the tank top,the reservoirwill overfill monitorfluid drains intothe ground causing the reservoir with groundwater and activate the high level alarm on the to drain. reservoir sensor. ' Reservoir Drains Groundwater Level Groundwater Level Reservoir Overfills OuterTank Breach OuterTank Breach DOUBLE-WALL STORAGE TANKS 6