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Upgrade, New Construction, and Compatibility Requirements <br /> California Code of Regulations, Title 23, Division 3, Chapter 16, <br /> Sections 2631(1), 2635(d), 2636(f)(5), 2640.1, 2665(b), (c), 2666(b)(2), (e)(2), & (f), <br /> 2711(c), & 2712(b)(5) <br /> prevention system requirement until and unless the ball floats require repair or <br /> replacement. Repair is required when it is discovered that the ball floats are not set at <br /> the appropriate level or will not activate when the substance stored reaches the <br /> appropriate level. When repair or replacement of a ball float is required, the UST must <br /> be retrofitted with overfill prevention system that does not use ball floats to meet the <br /> overfill prevention system requirement. <br /> (For more information on overfill prevention system requirements see the informational <br /> document Overfill Prevention Equipment Inspection Requirements (October 2018, v 1.0) <br /> and Local Guidance Letter 150-2.) <br /> [References cited: §§ 2611, def. of"Repair" & 2665(b) & (c).] <br /> New Construction Requirements <br /> Overfill Prevention Systems <br /> Can ball floats be used to meet the overfill prevention requirement when a UST is <br /> installed on or after October 1, 2018? <br /> No. For USTs installed on and after October 1, 2018, ball floats cannot be used to meet <br /> the overfill prevention system requirement of section 2635(c). <br /> (For more information on overfill prevention system requirements see the informational <br /> document Overfill Prevention Equipment Inspection Requirements (October 2018, v 1.0) <br /> and Local Guidance Letter 150-2.) <br /> [Reference cited: § 2635(d).] <br /> Line Leak Detectors for EGTSs <br /> Are LLDs required on underground pressurized piping connected to EGTSs <br /> installed on and after October 1, 2018? <br /> Yes. Beginning October 1, 2018, USTs defined as EGTSs in Health and Safety Code, <br /> division 20, chapter 6.7, section 25281 .5(c) with connected underground pressurized <br /> piping must be equipped with an LLD in accordance with section 2636(f)(5) at the time <br /> of installation. <br /> (For more information see the informational document Emergency Generator Tank <br /> System Line Leak Detector Requirements (September 2018, v 1.0).) <br /> [Reference cited: § 2636(f)(5).] <br /> Page 2 of 5 <br /> January 2019,v 1.0 <br />