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Chapter 10 — TRAPS AND INTERCEPTORS

1017.0 Oil and Flammable Liquid Interceptors.1017.1 Interceptors Required.

California Plumbing Code (Title 24, Part 5) · 2019 edition · updated 2026-09-10 · California

Italicized text is a California amendment to the model code, as printed in the official publication.

Repair garages and gasoline stations with grease racks or grease pits, and factories that have oily, flammable, or both types of wastes as a result of manufacturing, storage, maintenance, repair, or testing processes, shall be provided with an oil or flammable liquid interceptor that shall be connected to necessary floor drains. The separation or vapor compartment shall be independently vented to the outer air. Where two or more separation or vapor compartments are used, each shall be vented to the outer air or shall be permitted to connect to a header that is installed at a minimum of 6 inches (152 mm) above the spill line of the lowest floor drain and vented independently to the outer air. The minimum size of a flammable vapor vent shall be not less than 2 inches (50 mm), and, where vented through a sidewall, the vent shall be not less than 10 feet (3048 mm) above the adjacent level at an approved location. The interceptor shall be vented on the sewer side and shall not connect to a flammable vapor vent. Oil and flammable interceptors shall be provided with gastight cleanout covers that shall be readily accessible. The waste line shall be not less than 3 inches (80 mm) in diameter with a full-size cleanout to grade. Where an interceptor is provided with an overflow, it shall be pro

208 2019 CALIFORNIA PLUMBING CODE

CALIFORNIA PLUMBING CODE – MATRIX ADOPTION TABLE

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▸Contents — California Plumbing Code (Title 24, Part 5)
California Plumbing Code (Title 24, Part 5)
  1. Chapter 1 — GENERAL CODE PROVISIONS
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — GENERAL REGULATIONS
  4. Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
  5. Chapter 5 — WATER HEATERS
  6. Chapter 6 — WATER SUPPLY AND DISTRIBUTION
  7. Chapter 7 — SANITARY DRAINAGE
  8. Chapter 8 — INDIRECT WASTES
  9. Chapter 9 — VENTS
  10. ▸Chapter 10 — TRAPS AND INTERCEPTORS
    Overview
    1. 1001.2 Where Required. Each plumbing fixture shall be
    2. 1002.2 Fixture Traps. Each fixture trap shall have a protectin…
    3. 1002.3 Change of Direction. A trap arm shall be permitted to c…
    4. 1002.4 Vent Pipe Opening. The vent pipe opening from
    5. 1003.0 Traps — Described.1003.1 General Requirements. Each tra…
    6. 1003.2 Slip Joint Fittings. A maximum of one approved
    7. 1003.3 Size. The size (nominal diameter) of a trap for a
    8. 1004.0 Traps.1004.1 Prohibited. No form of trap that depends f…
    9. 1004.2 Movable Parts. Bladders, check valves or another
    10. 1007.2 Trap Seal Primers. Potable water supply trap seal
    11. 1009.2 Approval. The size, type, and location of each intercep…
    12. 1009.3 Design. Interceptors (clarifiers) for sand and similar …
    13. 1009.4 Relief Vent. Interceptors (clarifiers) shall be so
    14. 1009.5 Location. Each interceptor (clarifier) cover shall be
    15. 1009.6 Maintenance of Interceptors. Interceptors shall
    16. 1009.7 Discharge. The waste pipe from oil and sand interceptor…
    17. 1010.2 [AGR] Meat and Poultry Processing Plants.
    18. 1010.3 [AGR] Collection Centers and Facilities. All
    19. 1010.4 [AGR] Horse Meat and Pet Food Establish-ments. There sh…
    20. 1010.5 [AGR] Draining and Plumbing. There shall be
    21. 1014.0 Grease Interceptors.1014.1 General. Where it is determi…
    22. 1014.2 Hydromechanical Grease Interceptors. Plumbing fixtures …
    23. 1014.3 Gravity Grease Interceptors. Required gravity
    24. 1015.2 Components, Materials, and Equipment. FOG
    25. 1015.3 Sizing and Installation. FOG disposal systems
    26. 1015.4 Performance. FOG disposal systems shall produce
    27. 1015.5 [OSHPD 1, 1R, 2, 3, 4 & 5] Grease interceptors
    28. 1015.6 [OSHPD 1, 1R, 2, 3, 4 & 5] Grease interceptors
    29. 1016.0 Sand Interceptors.1016.1 Discharge. Where the discharge…
    30. 1016.2 Authority Having Jurisdiction. Sand interceptors
    31. 1016.3 Construction and Size. Sand interceptors shall be
    32. 1016.4 Separate Use. Sand and similar interceptors for
    33. 1017.2 Design of Interceptors. Each manufactured interceptor t…
    34. 1017.0 Oil and Flammable Liquid Interceptors.1017.1 Intercepto…
  11. Chapter 11 — STORM DRAINAGE
  12. Chapter 12 — FUEL GAS PIPING
  13. Chapter 13 — HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICA…
  14. Chapter 14 — FIRESTOP PROTECTION
  15. Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
  16. Chapter 16 — NONPOTABLE RAINWATER CATCHMENT SYSTEMS
  17. Chapter 17 — REFERENCED STANDARDS
  18. Appendix A — RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYS…
  19. Appendix B — EXPLANATORY NOTES ON COMBINATION WASTE AND VENT S…
  20. Appendix C — ALTERNATE PLUMBING SYSTEMS
  21. Appendix D — SIZING STORM WATER DRAINAGE SYSTEMS
  22. Appendix E — MANUFACTURED/MOBILE HOME PARKS AND RECREATIONAL V…
  23. Appendix F — FIREFIGHTER BREATHING AIR REPLENISHMENT SYSTEMS
  24. Appendix G — SIZING OF VENTING SYSTEMS
  25. Appendix H — PRIVATE SEWAGE DISPOSAL SYSTEMS
  26. Appendix I — INSTALLATION STANDARD FOR PEX TUBING SYSTEMS FOR …
  27. Appendix J — COMBINATION OF INDOOR AND OUTDOOR COMBUSTION AND …
  28. Appendix K — POTABLE RAINWATER CATCHMENT SYSTEMS
  29. Appendix L — SUSTAINABLE PRACTICES
  30. Appendix M — PEAK WATER DEMAND CALCULATOR

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