ATCP 93.500(9)(c)2. 2. Annual precision tightness testing — one year.

ATCP 93.500(9)(c)3. 3. Periodic precision tightness testing in association with inventory control — until the next test is conducted.

ATCP 93.500(9)(c)4. 4. Impressed current corrosion protection system, 60-day inspection — the previous 3 inspections.

ATCP 93.500(9)(c)5. 5. Corrosion protection system, annual test — the previous 3 tests.

ATCP 93.500(9)(c)6. 6. Internal inspection associated with underground tank lining — 10 years.

ATCP 93.500(9)(c)7. 7. Annual performance verification of leak detection equipment and flow restrictor — 2 years.

ATCP 93.500(9)(c)8. 8. Results of functional testing of impact and emergency shut-off valves and electrical continuity testing for dispensers — 2 years.

ATCP 93.500(9)(c)9. 9. The owner’s manual provided by the leak detection equipment manufacturer — until the leak detection system is replaced or no longer used.

ATCP 93.500(9)(c)10. 10. Any tank or pipe system modification or repair — the operational life of the system.

ATCP 93.500 Note Note: Lifetime maintenance of repair and upgrading records is required by 40 CFR 280.33 (f).

ATCP 93.500(9)(c)11. 11. Inspection or testing records — 3 years or the interval between required inspections or testing, whichever is longer.

ATCP 93.500(9)(c)12. 12. Tank-system site assessments and other environmental assessments, such as assessments for property transactions — 3 years after completion of any permanent closure, upgrade, repair or change in service. These records shall be maintained at one of the following locations:

ATCP 93.500(9)(c)12.a. a. With the owner or operator who took the UST system out of service.

ATCP 93.500(9)(c)12.b. b. With the current operator of the UST system site.

ATCP 93.500(9)(c)12.c. c. With the department if records cannot be maintained at the closed facility.

ATCP 93.500(9)(c)13. 13. Leak detection alarm investigation — 2 years.

ATCP 93.500(9)(c)14. 14. Product inventory verification in accordance with s. ATCP 93.503, inventory control in accordance with s. ATCP 93.515 (2), or statistical inventory reconciliation in accordance with s. ATCP 93.515 (6) — 10 years.

ATCP 93.500(9)(c)15. 15. One set of stamped, approved plans and specifications and a copy of the approval letter — the operational life of the system.

ATCP 93.500(9)(c)16. 16. Equipment or component compatibility for ethanol or biodiesel blends under s. ATCP 93.680 (3) (c) 1. or (6) (c) 1. — the operational life of the equipment or component.

ATCP 93.500 Note Note: All leak detection records should be retained permanently. The documentation could be helpful to exclude the site as a possible source of contamination at a later date.

ATCP 93.500 Note Note: Section ATCP 93.870 has record keeping requirements for operator training or USTs that are required to have a permit to operate from the department.

ATCP 93.500 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19; correction in (1) (c) 1., (8) (b) 3. made under s. 13.92 (4) (b) 14., Stats., correction in (8) (b) 2., 3. made under s. 13.92 (4) (b) 7., Stats., and correction in (1) (c) 2., (7) (g), (k) 1., (8) (c) 1. (intro.), c., (9) (b) 1. made under s. 35.17, Stats., Register October 2019 No. 766.

ATCP 93.503 ATCP 93.503 Product inventory verification at retail facilities.

ATCP 93.503(1) (1) This section applies to any tank system from which products are offered for retail sale to the public that are subject to the requirements of ch. ATCP 94.

ATCP 93.503 Note Note: Inventory verification can be particularly effective during regulatory investigations of consumer complaints about the quality of purchased fuels.

ATCP 93.503 Note Note: The inventory verification specified in this section is not required to conform to the inventory control specifications in API 1621.

ATCP 93.503(2) (2) To verify and maintain the integrity and quantity of delivered products, product inventory verification shall be conducted monthly for the life of the tank system, and reconciled on a monthly basis, in the following manner:

ATCP 93.503(2)(a) (a) Inventory volume measurements for regulated substance inputs, withdrawals, and the amount still remaining in the tank are recorded each operating day.

ATCP 93.503(2)(b) (b) The equipment used is capable of measuring the level of product over the full range of the tank’s height, to the nearest one-eighth of an inch.