§ 13.39. Underground storage tanks used for storage of hazardous substances.

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For every underground storage tank installed on or before December 31, 1983, and used for the storage of hazardous substances the following actions shall be taken:
(a) On or before January 1, 1985, the owner shall outfit the facility with a monitoring system capable of detecting unauthorized releases of any hazardous substances stored in the facility, and thereafter, the operator shall monitor each facility, based on materials stored and the type of monitoring installed.
(b) Provide a means for visual inspection of the tank, wherever practical, for the purpose of the monitoring required by subdivision (a). Alternative methods of monitoring the tank on a monthly, or more frequent basis, may be required by the local agency. The alternative monitoring methods include, but are not limited to, the following methods:
(1) Pressure testing, vacuum testing or hydrostatic testing of the piping systems and underground storage tanks.
(2) A ground water monitoring well or wells which are down gradient and adjacent to the underground storage tank, vapor analysis within a well where appropriate, and analysis of soil borings at the time of initial installation of the well. The local agency shall develop regulations specifying monitoring alternatives. The local agency shall approve the location and number of wells, the depths of wells and the sampling frequency, pursuant to these regulations. (Ord. No. 944. § 3.)

                    
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