ATCP 93.515(8)(b)2.c. c. The specific identification of the associated piping or sumps used for interstitial monitoring that are being tested.

ATCP 93.515(8)(b)3. 3. Automatic electronic line leak detection shall be programmed to provide an audible and visual alarm in the event of a line test failure or if a periodic monthly line test is not performed within a 30-day interval. Manual operator action shall be needed to silence the alarm.

ATCP 93.515(8)(b)4. 4. Any of the methods in sub. (7) may be used in lieu of complying with subd. 1. if they are designed and approved under s. ATCP 93.130 to detect a leak from any portion of the underground piping that routinely contains product.

ATCP 93.515(8)(c) (c) Line tightness testing.

ATCP 93.515(8)(c)1. 1. In addition to the automatic line leak detection required by par. (b), a periodic precision tightness test of piping shall be performed in accordance with sub. (4), except as provided in subds. 2. and 3.

ATCP 93.515(8)(c)2. 2. Where piping leak detection is installed that has the capability to perform monthly monitoring, a separate precision tightness test is not required.

ATCP 93.515(8)(c)3. 3. Any of the methods in subs. (6) and (7) may be used in lieu of complying with subd. 1. if they are designed and approved under s. ATCP 93.130 to detect a leak from any portion of the underground piping that routinely contains product.

ATCP 93.515(8)(d) (d) Interstitial sensors. Sensors used for interstitial line monitoring shall be programmed to provide an audible or visual alarm. Manual operator action shall be needed to silence the alarm. The operator shall respond to the alarm within 30 minutes.

ATCP 93.515(8)(e) (e) Periodic line leak detection equipment testing.

ATCP 93.515(8)(e)1. 1. A start-up functionality test of the operation of the leak detector shall be conducted in accordance with the manufacturer’s procedures for testing to the leak thresholds in par. (b) by inducing a physical line leak.

ATCP 93.515(8)(e)2. 2. A functionality test of the operation of a mechanical line leak detector shall be conducted annually in accordance with the manufacturer’s procedures for testing to the leak thresholds in par. (b) by inducing a physical line leak.

ATCP 93.515(8)(e)3. 3. A functionality test of the operation of an electronic line leak detector shall be conducted at least annually in accordance with the manufacturer’s procedures for periodic testing to the leak thresholds in par. (b) by inducing a physical line leak.

ATCP 93.515(8)(e)5. 5. Annual functionality verification shall be recorded on the department’s electronic-mechanical line leak detector annual functionality form, TR-WM-123, and shall be maintained onsite in accordance with s. ATCP 93.500 (9) (a).

ATCP 93.515(9) (9) Other methods. The department may approve other methods of leak detection in accordance with s. ATCP 93.130.

ATCP 93.515(10) (10) Ullage testing. Tightness testing of the ullage portion shall be performed in one of the following ways:

ATCP 93.515(10)(a) (a) As specified in NFPA 30 section 21.5, by or under the direct supervision of a certified installer or tank system tightness tester.

ATCP 93.515(10)(b) (b) By or under the direct supervision of a certified tank system tightness tester, with leak detection equipment and methods as approved under s. ATCP 93.130 that measure the tightness of the ullage portion.

ATCP 93.515(11) (11) Ordered conversion of leak detection methodology.

ATCP 93.515(11)(a) (a) The authorized agent or the department may order an operator, in writing, to terminate the use of a leak detection method and convert to an approved electronic methodology with history-generation capabilities for any of the following reasons:

ATCP 93.515(11)(a)1. 1. The operator has a history of failing to perform monthly leak detection for a total of 6 months or more during a 24 month period, or for 3 consecutive months.

ATCP 93.515(11)(a)2. 2. Statistical inventory reconciliation reports reflect pass for a total of 6 months or more during the preceding 24 months, or for 3 consecutive months, and the data points are not consistent with the material approval criteria in s. ATCP 93.130.

ATCP 93.515(11)(a)3. 3. The operator fails to review monthly leak-detection reports as required by the applicable leak detection method under this section.

ATCP 93.515(11)(a)4. 4. The operator enters data into an inventory record that is not supported by actual probe-generated data.

ATCP 93.515(11)(b) (b) The operator shall complete a conversion under par. (a) within 30 days of the date of the order or as determined by the department. Daily inventory verification as specified in s. ATCP 93.503 (2) is acceptable as a temporary monthly leak detection method during the conversion period.

ATCP 93.515 Note Note: Failure to provide monthly leak detection in accordance with this subsection beyond the 30-day period or compliance date as determined by the department may result in immediate shutdown under s. ATCP 93.115 (3) (a) 2.

ATCP 93.515 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19; correction in (6) (L), (11) (a) 1., 2. made under s. 35.17, Stats., Register October 2019 No. 766.

ATCP 93.517 ATCP 93.517 Airport hydrant system requirements.

ATCP 93.517(1) (1) General.

ATCP 93.517(1)(a) (a) Airport hydrant system installations shall comply with release reporting, response and investigation, closure, financial responsibility and notification requirements in accordance with this section.