Continuous Interstitial Monitoring Method (Liquid Filled)

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Vendor	Equipment Name	Operating Principle / Max Tank or Max Pipeline Length
Ameron International	Dualoy 3000/LCX and MCX Pipe Monitoring System Liquid Filled Interstitial Space	An applicable liquid is used to fill the Ameron Dualoy 3000/LCX and MCX fiberglass double-wall pipe interstice. A reservoir at the high point of the system contains a dual-point level sensor that will alarm if the liquid level is too high or too low. / 344 feet
	Dualoy 3000/LCX and MCX Pipe Monitoring System Liquid Filled Pressurized Interstitial Space	An applicable liquid is used to fill the Ameron Dualoy 3000/LCX and MCX fiberglass double-wall pipe interstice, which is pressurized using an air compressor or gas bottle. A reservoir contains a dual-point level sensor that will alarm if the liquid level is too high or too low. / 344 feet
Containment Solutions, Inc. (originally listed as Fluid Containment and O/C Tanks)	FCI Liquid Filled Interstitial Monitor Tank Model DWT6 with Model FHRB 810 Level Sensor	A Fluid reservoir is attached to the top of the tank and is open to the interstice through the bottom and is normally filled with a brine solution in freeze areas or water in non-freeze areas. The reservoir is equipped with a dual-point level sensor to provide for low level and high level alarms. / For use with all Containment Solution tank sizes.
Western Fiberglass, Inc.	Co-Flow Hydraulic Interstitial Monitoring System	Propylene glycol is used to fill the Western Fiberglass, Inc., double-walled/coaxial flexible pipeline interstice. Two reservoirs are used to contain the liquid, one at each end of the system. / 200 feet
	Co-Flow Hydraulic Interstitial Monitoring System Propylene Glycol Filled Pressurized Interstitial Space	Propylene glycol is used to fill the Western Fiberglass, Inc., double-walled/coaxial flexible pipe interstice. A pressurized cylinder is used to maintain pressure in the reservoir. / 200 feet
	Liquid-Filled Reservoir for Double-Wall Sumps with Liquid Sensor Models WF-3 and WF-750	Propylene glycol is used to fill the Western Fiberglass double-walled sump or under dispenser containment sump interstice. / Not applicable.
Xerxes Corp.	Xerxes Trucheck Continuous Leak Detection System	A Fluid reservoir is attached to the top of the tank and is open to the interstice through the bottom and is filled with a brine solution. The reservoir is equipped with an electronic probe to provide for low level and high level alarms./For use with all Xerxes tank sizes.