1. (a) Each UST system shall be equipped with spill containment devices that meet the requirements of 40 CFR 280.20(c)(1)i, reprinted in Appendix E.
2. (b) The owner shall use liquid-tight spill containment equipment to prevent the release of regulated substance to the environment when a transfer hose is detached from a fill or transfer pipe.

3. (c) All spill containment equipment for a UST system shall:

   1. (1) Have a liquid capacity of 5 gallons or more;
   2. (2) Be installed in or surrounded by impervious material so that if the volume of regulated substance exceeds that of the spill containment, the substance does not enter the UST system backfill;
   3. (3) Be installed in accordance with the manufacturer’s requirements; and
   4. (4) For any UST system installed on or after the September 1, 2013 effective date of this chapter, be installed within a liquid-tight sump or be of double-walled construction.
4. (d) When spill containment is installed within a secondary containment sump pursuant to (c)(4), above, the secondary containment sump shall be equipped with a sump sensor.
5. (e) Each drain valve on spill containment equipment on a UST system shall either be replaced annually or permanently sealed.
6. (f) For any UST system installed prior to April 22, 1997 or that otherwise does not have existing spill containment at stage I system connections, the owner shall install spill containment meeting the requirements of (c), above, at stage I system connections no later than October 13, 2021.

7. (g) Tank pads installed after the 2018 effective date this chapter shall:

   1. (1) Have liquid-tight sealed joints at all expansion, contraction, cold, and crack control joints within 3 feet of spill containment; and
   2. (2) Be sealed and maintained with a fuel-product-compatible joint sealant installed per manufacturer’s instruction.

Source. (See Revision Note #1 at chapter heading for Env-Or 400) #10393, eff 9-1-13; ss by #12643, eff 10-10-18 (See Revision Note #2 at chapter heading for Env-Or 400)