ATCP 93.230(6)(a)(a) A Class I liquid may not be used for degreasing or cleaning any engine, machine, part or equipment, or for cleaning any part of a building or premises, except as provided under par. (b). ATCP 93.230(6)(b)(b) Industrial processes that use Class I liquids for degreasing or cleaning shall incorporate a ventilation system to reduce and maintain vapor concentration to less than 25 percent of the lower explosive limit. ATCP 93.230(7)(7) System compatibility. Tank system components and containment systems shall be compatible with the substance stored in the tank system. ATCP 93.230(8)(8) Fire extinguisher maintenance. All portable fire extinguishers shall be maintained in accordance with NFPA 10. ATCP 93.230(9)(a)(a) The area around any tank, the area around or within a secondary containment, and the dispensing or transfer area shall be maintained free of vegetation, debris and other material that is not necessary for the operation of the tank, leak or spill containment, or liquid dispensing or transfer. ATCP 93.230(9)(b)(b) Portable container storage shall comply with NFPA 30 chapter 15. ATCP 93.230(9)(c)(c) All surface area within a 20-foot radius of a storage tank or dispenser shall be maintained free of combustible material and debris, except as allowed for public access motor vehicle fueling operations in ss. ATCP 93.605 (8) and 93.620 (2). ATCP 93.230 NoteNote: With the exception of the requirements in ss. ATCP 93.605 (8) and 93.620 (2), the ability to maintain the combustible material free surface area addressed in this subsection may be limited by land features, landscaping and facility management of adjacent property owners. ATCP 93.230(10)(a)(a) All system equipment and components shall be maintained to function to the manufacturer’s original specifications, or in the absence of manufacturer’s specifications, the designer’s or construction contractor’s original specifications, and shall be maintained to be leak-free. ATCP 93.230(10)(b)1.1. At least monthly, except as provided in subd. 2., sumps and secondary containment systems for tanks, piping and dispensers shall be inspected, and any liquids and debris contained shall be removed. ATCP 93.230(10)(b)2.2. Sumps with a non-discriminating electronic sensor that detects liquid in the sump shall be inspected at least semiannually unless more frequent inspection is required by PEI RP500 or RP900. ATCP 93.230(10)(c)(c) Deficiencies in product lines or structural or transition components that allow for liquid leaks or water intrusion shall be repaired or corrected. ATCP 93.230(10)(d)(d) Leak detection, fill and overfill prevention equipment shall be maintained in a functional condition. ATCP 93.230(10)(e)(e) Fire and leak prevention and detection equipment installed, but not required by the department’s rules, shall be maintained functional or be removed. ATCP 93.230(10)(f)(f) Aboveground or underground storage tanks shall be properly maintained as in-use or temporarily out of service or be closed in accordance with s. ATCP 93.460 or 93.560, unless the requirements in s. ATCP 93.450 or 93.550 are met for a change in service to store a non-regulated substance. ATCP 93.230 NoteNote: Section ATCP 93.115 (3) (a) 7. allows the authorized agent or the department or fire department to shut down the tank system until any breach in the tank system is repaired or otherwise corrected. ATCP 93.230(11)(a)(a) When damage has occurred to underground pressurized tank system components or to underground vent and remote fill lines, the affected portion of the tank system shall be removed from service, and the following actions shall be taken before that portion of the system is put back into service, except as provided in par. (b): ATCP 93.230(11)(a)4.4. Perform any additional monitoring, processes, or procedures needed to verify system integrity. ATCP 93.230(11)(a)6.6. Notify the authorized agent or the department if the damage resulted in a release.