ATCP 93.310 NoteNote: Tanks installed at 1- or 2-family dwellings are not required to have plan review under s. ATCP 93.100, and aboveground tanks that have a capacity of less than 1,100 gallons are not required to have registration under s. ATCP 93.140. ATCP 93.310 NoteNote: Devices that burn used oil are regulated by the Commercial Building Code, chs. SPS 361 to 366, and the Fire Prevention Code, ch. SPS 314. The tank that stores the oil is regulated by this chapter. ATCP 93.310(3)(3) Underground tanks that have a capacity of less than 4,000 gallons. Underground heating oil storage tank systems that have a capacity of less than 4,000 gallons shall have all of the following: ATCP 93.310(3)(a)(a) Overfill prevention equipment that notifies the person filling the tank, with either an audible or a visual signal, that the liquid level has reached 90 percent of the tank’s capacity. ATCP 93.310(3)(b)(b) Corrosion protection that complies with s. ATCP 93.520, except this requirement does not apply to tanks that were installed before November 1, 1994. ATCP 93.310(3)(c)1.1. Precision tightness testing every 2 years or leak detection in accordance with s. ATCP 93.510, except this requirement does not apply to residential tanks which have a capacity of less than 1,100 gallons and which were installed before October 29, 1999, for consumptive use on the property where stored. ATCP 93.310(3)(c)2.2. The tightness testing or leak detection methods used to comply with subd. 1. shall be specifically approved for use with the specific type of heating oil in accordance with s. ATCP 93.130. ATCP 93.310(4)(4) Underground tanks that have a capacity of 4,000 gallons or more. Underground heating oil storage tank systems that have a capacity of 4,000 gallons or more shall have secondary containment which complies with s. ATCP 93.500 (1) if the system is either new or a replacement, leak detection which complies with s. ATCP 93.510 and corrosion protection which complies with s. ATCP 93.520. ATCP 93.310(5)(b)(b) Spill and overfill prevention for underground tanks shall be provided in accordance with s. ATCP 93.505, except this requirement does not apply to residential tanks that have a capacity of less than 1,100 gallons containing fuel oil for consumptive use on the property. ATCP 93.310(5)(c)(c) Fill pipes for used-oil tanks that are part of a heating system may be located inside a building. ATCP 93.310(6)(6) Tank closure and general administrative requirements. ATCP 93.310 NoteNote: Sections ATCP 93.440 to 93.470 address inspections; seldom-used and temporarily out of service tanks; change in service to store a non-regulated substance; tank closures; tank system site assessments; and confirming and responding to leaks, spills, overfills and releases. ATCP 93.310 NoteNote: Sections ATCP 93.545 to 93.585 address seldom-used and temporarily out of service tanks; change in service to store a non-regulated substance; tank system closures; conditions indicating releases; tank system integrity assessments; tank system site assessments; and responding to leaks, spills, overfills and releases. ATCP 93.310 HistoryHistory: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19. ATCP 93.315ATCP 93.315 Heating oil tanks that are removed from service. ATCP 93.315(1)(1) Application. This section applies to aboveground heating oil storage tanks which are connected to heating appliances and which store heating oil that is consumed on the premises. ATCP 93.315(2)(2) General. Placing a heating oil storage tank out of service for any reason other than immediate repair or replacement shall follow the procedure in either par. (a) or (b): ATCP 93.315(2)(a)(a) The tank and all connected piping, including the vent and fill piping, shall be emptied, cleaned and removed from the premises. ATCP 93.315(2)(b)1.1. The tank and all connected piping shall be emptied and purged of all vapors. ATCP 93.315(2)(b)3.3. If the fill pipe is not removed, it shall be filled to the top with concrete and capped. ATCP 93.315(2)(b)4.4. Any piping that is not removed, other than a tank vent, shall be capped or otherwise sealed.