§ 5004.2

4. Other approved engineered systems.

   Except for surfacing, the floors, sills, dikes, sumps and collection systems shall be constructed of noncombustible material, and the liquid-tight seal shall be compatible with the material stored. When liquid-tight sills or dikes are provided, they are not required at perimeter openings having an open-grate trench across the opening that connects to an approved collection system.

(b) Incompatible materials.

California Fire Code Section 5004.2.2.2 is hereby amended to read:

5004.2.2.2 Incompatible materials. Incompatible materials shall be separated from each other in independent secondary containment systems.

(c) Containment pallets.

California Fire Code Section 5004.2.3 is hereby amended to read:

5004.2.3 Containment pallets. Combustible containment pallets shall not be used inside
buildings to comply with Section 5004.2 where the individual container capacity exceeds
55 gallons (208 L) or an aggregate capacity of multiple containers exceeds 1,000 gallons
(3,785 L) for liquids or where the individual container capacity exceeds 550 pounds (250
kg) or an aggregate of multiple containers exceeds 10,000 pounds (4,540 kg) for solids.

Where used as an alternative to spill control and secondary containment for outdoor storage
in accordance with the exception in Section 5004.2, containment pallets shall comply with
all of the following:

1. A liquid-tight sump accessible for visual inspection shall be provided;

2. The sump shall be designed to contain not less than 66 gallons (250L);

3. Exposed surfaces shall be compatible with material stored; and

4. Containment pallets shall be protected to prevent collection of rainwater within the
sump of the containment pallet.

(Ord. 3018-13 § 2; Ord. 3101-16 § 1; Ord. 3148-19 § 1)