NR 419.045(4)(a)2.h. h. A gasket, joint, lid, cover, or door has a crack or gap, or is broken.

NR 419.045(4)(a)3. 3. For a surface impoundment, visually inspect the cover and all openings for leaks, except for a cover and closed vent system maintained under negative pressure, and take corrective action.

NR 419.045(4)(a)4. 4. For a surface impoundment, visually inspect for and correct the following improper conditions:

NR 419.045(4)(a)4.a. a. An access hatch or other opening is left open when not in use.

NR 419.045(4)(a)4.b. b. A joint, lid, cover, or door has a crack or gap, or is broken.

NR 419.045(4)(a)5. 5. For a portable container, visually inspect the cover and all openings for leaks and take corrective action.

NR 419.045(4)(a)6. 6. For a portable container that is located within an enclosure that is vented by means of a closed vent system to a control device, visually inspect the enclosure and closed vent system for leaks, except for an enclosure and closed vent system maintained under negative pressure, and take corrective action.

NR 419.045(4)(a)7. 7. For a portable container, visually inspect for and correct the following improper conditions:

NR 419.045(4)(a)7.a. a. An access hatch or other opening is left open when not in use.

NR 419.045(4)(a)7.b. b. A cover or door has a gap or crack, or is broken.

NR 419.045(4)(a)8. 8. For an individual drain system, visually inspect for and correct the following improper conditions:

NR 419.045(4)(a)8.a. a. A joint, lid, cover, or door has a gap, crack, or hole or is broken.

NR 419.045(4)(a)8.b. b. An access hatch or other opening is left open when not in use for sampling or removal, or for equipment inspection, maintenance, or repair.

NR 419.045(4)(a)8.c. c. Sufficient water is not present to properly maintain integrity of water seals.

NR 419.045(4)(a)8.d. d. Drains using tightly-fitted caps or plugs have caps and plugs that are not in place or not properly installed.

NR 419.045(4)(a)8.e. e. Junction boxes do not have covers in place or covers have visible gaps, cracks, or holes.

NR 419.045(4)(a)8.f. f. Unburied portion of sewer lines have cracks or gaps.

NR 419.045(4)(a)9. 9. For a junction box vented to a process or through a closed vent system to a control device, visually inspect for and correct leaks in the closed vent system.

NR 419.045(4)(a)10. 10. For oil-water separators, visually inspect fixed roof and all openings for leaks and take corrective action.

NR 419.045(4)(a)11. 11. For oil-water separators, visually inspect for and correct the following improper conditions:

NR 419.045(4)(a)11.a. a. An access door of other opening is left open when not in use, or not equipping the door or opening with a gasket.

NR 419.045(4)(a)11.b. b. The floating roof is not resting on either the surface of the liquid or on the leg supports.

NR 419.045(4)(a)11.c. c. There is stored liquid on the floating roof.

NR 419.045(4)(a)11.d. d. A rim seal is detached from the floating roof.

NR 419.045(4)(a)11.e. e. There are holes, tears, or other open spaces in the rim seal or seal fabric of the floating roof.

NR 419.045(4)(a)11.f. f. A gasket, joint, lid, cover, or door has a gap or crack, or is broken.

NR 419.045(4)(b) (b) For a wastewater tank or oil-water separator equipped with an external floating roof having primary and secondary seals used to comply with sub. (2) or (3), the secondary seal shall be inspected for seal gaps and repaired as follows:

NR 419.045(4)(b)1. 1. The secondary seal shall be measured for seal gaps annually and after repair as follows:

NR 419.045(4)(b)1.a. a. The width of any seal gap is the distance between the seal and the tank wall and shall be determined by using probes of various widths to accurately measure the actual distance from the seal to the tank wall.