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r <br />I. MONITORING: All monitoring equipment must be listed in the State Waster Resources Control Board <br />Division of Clean Water Program Local Guidance Letter 113. <br />Check <br />Box <br />Code <br />Section <br />All secondary containment units (e.g. tank annular spaces, secondary piping, sumps, under- <br />® <br />23 CCR <br />2632 <br />dispenser containment, etc.) monitored for leaks using approved electronic leak detection systems. <br />2636 <br />All sensors must be located at the lowest possible point so that they may detect a leak at the <br />earliest opportunity. <br />Electronic monitoring sensors located at the following points: <br />° At the bottom of the interstitial space of each secondarily -contained tank, positioned as <br />near as possible to the bottom of the tank. <br />Manufacturer Model <br />° In each collection sump, positioned as near as possible to the bottom of the collection <br />sump. Additionally, in any sump acting as secondary containment for unused tank <br />openings which connect to the primary space. <br />26CR <br />32 <br />Manufacturer Model <br />2630 (d) <br />° In dispenser pans which do not drain into secondary containment piping. (Note: A <br />mechanical switch which triggers a shear valve may be substituted but this system will <br />not qualify for the annual line tightness test exemption under 23 CCR 26360). <br />Manufacturer Model <br />° Along secondarily -contained pipe runs which do not meet the 1/4 inch -per -foot slope <br />requirement, positioned in the depressed or low-lying areas. <br />Manufacturer Model <br />Automatic line leak detectors installed to monitor underground pressurized piping. <br />23 CCR <br />2636(1) <br />❑ <br />HSC <br />Manufacturer Model <br />25290.1(h) <br />25290.2 <br />Alarm panel provides both audible and visual alarms. It is located in a protected area and within <br />sight and hearing distance of on-site personnel and hard -wired to a dedicated circuit. <br />23 CCR <br />® <br />2632(c)(2XB) <br />Manufacturer Model <br />Revised 8/9/06 8 <br />