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r F - Cal. Code Regs. Title 23, Division 3, Chapter 16, Underground Tank Regulations (1) All secondary containment, including under -dispenser containment, and under -dispenser spill control or containment systems, shall be equipped with a continuous monitoring system that either activates an audible and visual alarm or stops the iary flow of product at the dispenser when it detects a leak. not (2) Automatic line leak detectors shall be installed on underground pressurized piping and shall be capable of detecting a 3 -gallon per hour leak rate at 10 psi within 1 hour with a probability of detection of at least 95 percent and a probability of false alarm no greater than 5 percent. stem (3) Other monitoring methods may be used in lieu of the requirement in subdivision (2) if it is demonstrated to the satisfaction of the local agency that the alternate method is as effective as the methods otherwise required by this section. Continuous monitoring systems as described in subdivision (l), which shut down the pump in addition to either activating the audible and visual alarm or stopping the flow of product at the dispenser satisfy the automatic line leak detector requirement of subdivision (2). (4) Monitoring shall be conducted on all underground pressurized piping with secondary containment at least annually at a pressure designated by the equipment manufacturer, provided that the method is capable of detecting a minimum release ction equivalent to 0.1 gallon per hour defined at 150 percent of the normal operating pressure of the product piping system at the test pressure with at least a 95 percent probability of detection and not more than a 5 percent probability of false alarm. This requirement is waived if the criteria in subsection (g) of this section arc met. )Clow (g) Underground pressurized piping which meets all of the following requirements salifies the annual tightness test requirements h (C) specified in subsection (f)(4): (1) All secondary containment systems are equipped with continuous monitoring systems. The leak detection device may be 'iping located at the pump sump for sections of the piping that slope back to this point. ckfill, (2) All continuous monitoring systems for the piping are connected to the punping system. (3) All continuous monitoring systems for the piping shut down the pump and either activate an audible and visual alarm or stop the flow of product at the dispenser when they detect a leak. side a ystems (4) e pumping system shuts down automatically if any of the continuous monitoring systems for the piping fail or are di onnected. iractice (5) The requirements of subdivisions (3) and (4) do not apply to an emergency generator, provided the monitoring system is ng was checked at least daily. icate of (h) Under -dispenser containment shall be designed, constructed, and installed in accordance with the following: a code (1) Owners or Operators of a UST system shall have the system fitted with under -dispenser containment, or an approved Lall also under -dispenser spill containment or control system according to the following schedule: (A) At the time of installation for systems installed after January 1, 2000. nizatioo (B) By July 1, 2001, for systems installed after July 1, 1987 that are located within 1,000 feet of a public drinking water well, as identified pursuant to the state Geographic Information System mapping database. (C) By December 31, 2003, for systems not subject to subsection 2636(h)(1)(A) or (B). nee with ,f desig0 (2) Under -dispenser containment shall be designed, constructed, installed, and monitored in accodance with section 2631, -ssuriz 2636(c)(2), 2636(e), and 2636(f). ) minutes pairs an (3) A manufacturer of an under -dispenser spill containment or control system may apply to the Division of Clean Water meth Programs Underground Storage Tank Program Manager for approval of the system. Owners or operators shall not install an from t under -dispenser spill containment or control system that has not been approved. i meeti (A) Applications for approval shall be submitted in writing and include the following: shall 19