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(b) Be designed and constructed with a monitoring system 25292. For every underground storage tank installed on or before
<br /> capable of detecting the entry of the hazardous substance stored in January 1, 1984,and used for the storage of hazardous substances, the
<br /> the primary containment into the secondary containment. If water following actions shall be taken:
<br /> could intrude into the secondary containment, a means of } (a) On or before July 1, 1985, the owner shall outfit the facility
<br /> monitoring for water intrusion and for safely removing the water - with a monitoring system capable of detecting unauthorized releases
<br /> shall also be provided. of any hazardous substances stored in the facility,and thereafter, the
<br /> (c) When required by the local agency, a means of overfill operator shall monitor each facility, based on materials stored and
<br /> protection for any primary tank, including an overfill prevention the type of monitoring installed.
<br /> device or an attention-getting higher level alarm, or both. Primary (b) Provide a means for visual inspection of the tank, wherever
<br /> tank filling operations of underground storage tanks containing practical,for the purpose of the monitoring required by subdivision
<br /> motor vehicle fuels which are visually monitored and controlled by (a). Alternative methods of monitoring the tank on a monthly, or
<br /> a facility operator satisfy the requirements of this subdivision. more frequent basis,may be required by the local agency,consistent
<br /> (d) If different substances are stored in the same tank and in with the regulations of the board.
<br /> combination may cause a fire or explosion, or the production of The alternative monitoring methods include, but are not limited
<br /> flammable, toxic, or poisonous gas, or the deterioration of a primary to, the following methods:
<br /> or secondary container, then they shall be separated in both the
<br /> (1) Precision testing as defined in National Fire Protection
<br /> Primary and secondary containment so as to avoid potential Association Pamphlet 329, "Recommended Practice for Handling
<br /> intermixing. Underground Leakage of Flammable and Combustible Liquids as
<br /> (e) If water, could enter into the secondary containment by amended, for proving the integrity of an underground storage tank
<br /> precipitation or infiltration, the facility shall contain a means of and piping system at time intervals specified by the board.
<br /> removing the water by the owner or operator. This removal system (2) A groundwater monitoring well or wells which are
<br /> shall also prevent uncontrolled removal of this water and provide for t downgradient and adjacent to the underground storage tank, vapor
<br /> a means of analyzing the removed water for hazardous substance ; analysis within a well where appropriate,and analysis of soil borings
<br /> contamination and a means of disposing of the water, if so a at the time of initial installation of the well.
<br /> contaminated, at an authorized disposal facility. (3) A continuous leak detection and alarm system which is located
<br /> (f) Before the underground storage tank is covered, enclosed, or in monitoring wells adjacent to an underground storage tank and
<br /> placed in use, the standard installation testing for requirements for which is approved by the local agency.
<br /> e
<br /> underground storage systems specified in Section 2_7 of the a (4) For monitoring tanks containing motor vehicle fuels, daily
<br /> Flammable and Combustible Liquids Code,adopted by the National gauging and inventory reconciliation by the operator, if all of the
<br /> Fire Protection Association, (NFPA 30) as amended and published following requirements are met:
<br /> in the respective edition of the Uniform Fire Code,shall be followed. (A) Inventory records are kept on file for one year and are
<br /> • (g) Before the underground storage tank is placed in service, the i reviewed quarterly.
<br /> underground storage systems shall be tested in operating condition i (B) The tank is tested, using the precision test as defined by the
<br /> using a precision [est as defined in National Fire Protection National Fire Protection Association Pamphlet 329, "Recommended
<br /> Association Pamphlet 329, "Recommended Practice for Handling Practice for Handling Underground Leakage of Flammable and
<br /> Underground Leakage of Flammable and Combustible Liquids," as Combustible Solids," as amended, for proving the integrity of an
<br /> amended,for proving the integrity of an underground storage tank. s underground storage tank at time intervals specified by the board
<br /> (h) If the underground storage tank is designed to maintain a and whenever there is a shortage greater than the amount which the
<br /> water level in the secondary containment,the tank shall be equipped board shall specify by regulation.
<br /> with a safe method of removing any excess water to a holding facility f (C) If a pressurized pump system is connected to the tank system,
<br /> and the owner or operator shall inspect the holding facility monthly the system has a leak detection device to monitor for leaks in the
<br /> for the presence of excess water overflow. If excess water is presenti in
<br /> in the holding facility, the Permitholder shall provide a means to p p g
<br /> E (c) The board shall develop regulations specifying monitoring
<br /> analyze the water for hazardous substance contamination and a alternatives. The local agency, or any other public agency specified
<br /> means to dispose of the water, if so contaminated, at an authorized
<br /> by the local agency,shall approve the location and number of wells,
<br /> disposal facility.
<br /> the depth of wells, and the sampling frequency, pursuant to these
<br /> regulations.
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