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Monitoring Hydrostatic Monitoring System helps guard against leaks and liabilities. Normal Conditions coNCRETETRAfFICPAD- Containment Solutions recommends the Hydrostatic The reservoir liquid -,�. -.E o, Monitoring System for double-wall tanks because of its level will be stable if OPTTNAL RESERVOIR superior leak detection capability. By filling the cavity both the inner and LICUM LEVEL SENSOR between the inner and outer tank walls with a non- STABLE RfSFAVOIR outer tanks are tight. Llau6OLEVEL hazardous liquid, hydrostatic pressure is continuously The reservoir sensor k= applied to both the primary and secondary tank. This will activate an alarm STORED system is capable of detecting tank leaks in either the if the reservoir drains PRooucr primary or secondary tank walls for all installed or overfills. DauBCE-WALL. conditions, r a c UND1. The Hydrostatic Monitoring System, with a stand pipe, can also serve the dual function of a precision tank test. Inner Wall Breach The system has been independently tested and Monitor fluid drainsfl statistically validated to meet the EPA and National Fire into the primary tank Protection Association's criteria as a precision tank test. causing the reservoir Using a stand pipe, the system has been shown to be liquid level to drop '. x capable of detecting leaks as small as 0.10 gallons per and activate alarm. ` hour with a 99.9% probability of detection and less than No petroleum product BREACH'u a 12% probability of a false alarm, v o escapes from the pri- mary tank to conta- ,f t n All the fiberglass double-wall tanks in this brochure can curinate the annular include the optional fiberglass reservoir necessary for space. the Hydrostatic Monitoring System. ' The Hydrostatic Monitoring System provides Outer Wall Breach Groundwater continuous leak detection while avoiding false alarms Below Tank Top caused by changes in product temperature, product If the groundwater is level, tank deflection under loads, or groundwater below the tank top,the conditions. monitor fluid drains -Accessories into the ground, caus- ing the reservoir liquid Antifreeze Mixtures level to drop and In areas where ambient temperatures or delivered activate the alarm. '` °W products may be subjected to freezing conditions, an antifreeze solution must be used with our Hydrostatic Outer Wall Breach Tank Monitor to avoid potential tank damage. �-�� _ Groundwater Brine Antifreeze Solution Over Tank Top GROUNDWATER Our pre-mixed and blended calcium chloride solution VCI If the groundwater is �— OV B ILS provides freeze protection to -40°F.This non-toxic brine OVERFILLS p over the tank top, the antifreeze can be factory-installed into tanks measuring reservoir will fill up up to 10' diameter and 30,000-gallon capacity. Its color with groundwater and tracer helps detect hidden damage from shipping or activate the high level OUTER TANK jobsite handling. alarm on the reservoir �--~BREACH sensor. - --- �o