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(2) if locked caps are utilized, then at least one shall be removed to (c) Owners of underground storage tanks subject to permanent closure where the determine if any liquids or other substances he" been added to the tanks are approved to be closed in place shall comply with the applicable underground storagetank Iftthereit*$ bs (a ch of thin istseche llon�ity or p%iand withs of Chahe foo��o6rng requi7r�ts=lsian 20 of the Health and Safety type of liquid added pu C (d) The owner may terminate the temporary closure and reuse the underground (1) All residual liquid, solids or sludges shall be removed and handled as a storage tank only if the local agency approves the rouse according to the hazaand rdous s waste ethe Nor recyclableth ematty errials In accordance with Chapters 6.5 requirements specified in sections 2662, 2663, and 2664. (2) Ail piping associated with the underground storage tank shalt be removed Authoritys Health and Safety Code 25299.3, 25249.7 and disposed of unless removal might damage structures or other pipes that are being used and that are contained In a common trench. In which References Health and Safety Code 25298 case the piping to be closed shall be emptied of all contents and capped. 40 CFR 280.70 (3) The underground storage tank, except for aping that is closed pursuant to subsection (2) of this section, shall completely filled with an 2672. Permanent Closure Requirements inert solid, unless the owner Intends to use the underground storage tank (a) Owners of underground storage tanks subect to permanent closure shall comply for the storage of a nonhazardous substance which is compatible with the with either subsection (b) of this sj ecton for underground storage tank previous use of the underground storage tank and its construction. removal or subsection (c) of this section for closure in Place. t is not (d) The owner of an underground storage tank being closed pursuant to this essential that all portions of an endergrouml Store" tank be permanently closed in the same mauier; however, all actions shall comply with the section shall demonstrate to the satisfaction of the local agency that no appropriate subsection of this section. Subsections (d) and (e) of this unauthorized release has occurred. This demonstration shall be based on soil section regarding no discharge demonstration applies to all underground Th slanalysisishall/be performed or water ldduringis foreImmediater is tely after csent in losure avation. storage tanks subject to permanent closure. activities. if the demonstration is based on soil sample analysis, soil (b) Owners of undergrannd storage tanks subject to permanent closure shall comply samples shall be taken and analyzed according to the following requirements: with applicable provisions of Chapter 6.6 of Division 20 of the Health ri" (1) if the underground storage tank or any portion thereof Is removed, soil Safety Code and with the following requireaentst triples shall be taken immediately beneath the raweved portions of the (1) All residual liquid, solids, or sludges shall be removed, and handled as tank, a minimum of two feet into native material at each end of the tank a hazardous waste or recyclable materials in accordance with Chapter 6.5 in accordance with sectiof on 2649.for A separate sample shall be taken for of the Health and Safety Code. (2) if the underground storage tank contained It hazardous substance that (2) if the underground storage tank or any portions thereof is not removed, at could produce flammable vapors at standard temperature and pressure, then least ate boring shall be taken as close as possible to the midpoint the underground storage tank shall be Iaertsd to levels that shall beneath the tank utilizing a slant borin (mechanical or me real), or preclude explosion or such lower levels as may be required by the local other appropriate method such as verticalborings drilled on each ionp dimensional side of the tank. If the depth to ground water is less than agency. 20 feet, then a ground water monitoring well shall be installed adjacent (3) When an underground storage tank or any part of an underground storage to the tank and/or piping in the verified downgradient direction. tank is to be disposed of, the owner must document to the local agency that proper disposal has been completed. This documentation shall be (3) Soils shell be analyzed in accordance with section 2649 for all . constituents of the previously stored hazardous substances and their submitted within the time from specified by the local agency breakdown or transformation products. The local aggeennccy may waive the (4) An owner of an underground storage tank or any part thereof that is requirement for analysis of all constituents gqnbraakiowns� or transformation destined for a specific reuse shall advise the local agency, within the products when thekenviroonmentt can beconstituents aidentifiedse a ;forfanalysis. to water time frame specified by that agency, of: JAI The name of the new owner of the underground storage tank; (e) The detection of any unauthorized release shall require compliance with the 6 Name of the new operator; reporting requirements of Article 5 of this chapter. C The location of use; and Authority: Healthand Safety Cook 25299.3, 25299.7 0 Nature of use. Reference: Health and Safety Code 25298 40 CFR 280.11 7.3 7.4