Sand, oil and flammable liquid interceptors

Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:

• CPC § 0.2 High relevance — show source text

  These openings shall be staggered so that there cannot be a straight line flow between the inlet pipe and the outlet pipe. The invert of the inlet pipe shall be no lower than the invert of the outlet pipe.

  The sand interceptor shall have a minimum dimension of 2 square feet (0.2 m [2] ) for the net free opening of the inlet section and a minimum depth under the invert of the outlet pipe of 2 feet (610 mm).

  For each 5 gpm (0.3 L/s) flow or fraction thereof over 20 gpm (1.26 L/s), the area of the sand interceptor inlet section is to be increased by 1 square foot (0.09 m [2] ). The outlet section shall at all times have a minimum area of 50 percent of the inlet section.

  The outlet section shall be covered by a solid removable cover, set flush with the finished floor, and the inlet section shall have an open grating, set flush with the finished floor and suitable for the traffic in the area in which it is located.

  1016.4 Separate Use. Sand and similar interceptors for every solid shall be so designed and located as to be readily accessible for cleaning, shall have a water seal of not less than 6 inches (152 mm), and shall be vented.

  1017.0 Oil and Flammable Liquid Interceptors.

  1017.1 Interceptors Required. 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. Floor drains in such locations shall be connected directly to oil and flammable liquid interceptors.

  1017.2 Interceptor Design Alternatives. Oil interceptors shall comply with IAPMO IGC 183 or be in accordance with Section 1017.3 through Section 1017.4.

  1017.3 Interceptor Details. Oil and flammable liquid interceptors shall be in accordance with the following:

  (1) 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.

  (2) 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.

  (3) 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.

  (4) The waste line shall be not less than 3 inches (80 mm) in diameter with a full-size cleanout to grade.

  (5) Where an interceptor is provided with an overflow, it shall be provided with an overflow line [not less than 2 inches (50 mm) in diameter] to an approved waste oil tank having a minimum capacity of 550 gallons (2082 L) and meeting the requirements of the Authority Having Jurisdiction.

  (a) The waste oil from the separator shall flow by gravity or shall be pumped to a higher elevation by an automatic pump.

• CPC § 901.0 High relevance — show source text

  H 901.0 Commercial or Industrial Special Liquid- Waste Disposal.

  H 901.1 Interceptor. Where liquid wastes contain excessive amounts of grease, garbage, flammable wastes, sand, or other ingredients that affect the operation of a private sewage disposal system, an interceptor for such wastes shall be installed.

  H 901.2 Installation. Installation of such interceptors shall comply with Section 1009.0 of this code, and their location shall comply with Table H 101.8 of this appendix. H 901.3 Sampling Box. A sampling box shall be installed where required by the Authority Having Jurisdiction. H 901.4 Design and Structural Requirement. Interceptors shall be of approved design and be not less than two compartments. Structural requirements shall comply with Section H 501.0 of this appendix.

  H 901.5 Location. Interceptors shall be located as close to the source as possible and be accessible for servicing. Necessary manholes for servicing shall be at grade level and be gastight.

  H 901.6 Waste Discharge. Waste discharge from interceptors shall be permitted to be connected to a septic tank or other primary system or be disposed into a separate disposal system. H 901.7 Design Criteria. A formula shall be permitted to be adapted to other types of occupancies with similar wastes. (See Chart H 901.7)

  H 1001.0 Inspection and Testing. H 1001.1 Inspection. Inspection requirements shall comply with the following:

  (1) Applicable provisions of Section 105.0 of this code and this appendix shall be required. Plans shall be required in accordance with Section 103.3 of this code.

  (2) System components shall be properly identified as to manufacturer. Septic tanks or other primary systems shall have the rated capacity permanently marked on the unit.

  (3) Septic tanks or other primary systems shall be installed on dry, level, well-compacted soil.

  (4) Where design is predicated on soil tests, the system shall be installed at the same location and depth as the tested

  area.

  H 1001.2 Testing. Testing requirements shall comply with the following:

  (1) Septic tanks or other primary components shall be filled with water to flow line before requesting an inspection. Seams or joints shall be left exposed (except the bottom), and the tank shall remain watertight.

  (2) A flow test shall be performed through the system to the point of effluent disposal. All lines and components shall

  CHART H 901.7

  RECOMMENDED DESIGN CRITERIA

  GREASE AND GARBAGE, COMMERCIAL KITCHENS Number of meals per peak hour x Waste flow rate [1] x Retention time [2] x Storage factor [3] = (Interceptor size liquid capacity)

  SAND-SILT OIL, AUTO WASHERS vehicles Number of per hour x Waste flow rate [1] x Retention time [2] x Storage factor [3] = (Interceptor size liquid capacity)

  SILT-LINT GREASE, LAUNDRIES, LAUNDROMATS

  Number of x 2 cycles per x Waste flow x Retention time [2] = Storage factor [3] = Interceptor size machines hour rate [1] (liquid capacity)

  Notes: 1 For waste flow rate see Table H 201.1(4). 2 Retention Times:

• CPC § 1015.4 High relevance — show source text

  1015.4 Performance. FOG disposal systems shall produce an effluent quality not to exceed 5.84 grains per gallon (gr/gal) (100 mg/L) FOG. 1015.5 [OSHPD 1, 1R, 2, 3, 4 & 5] Grease interceptors shall not be installed in food preparation area of kitchens. 1015.6 [OSHPD 1, 1R, 2, 3, 4 & 5] Grease interceptors shall be installed outside of the kitchen area in location affording ease of maintenance and servicing.

  1016.0 Sand Interceptors.

  1016.1 Discharge. Where the discharge of a fixture or drain contains solids or semi-solids heavier than water that would be harmful to a drainage system or cause a stoppage within the system, the discharge shall be through a sand interceptor. Multiple floor drains shall be permitted to discharge into one sand interceptor. 1016.2 Authority Having Jurisdiction. Sand interceptors are required where the Authority Having Jurisdiction deems it advisable to have a sand interceptor to protect the drainage system. 1016.3 Construction and Size. Sand interceptors shall be built of brick or concrete, prefabricated coated steel, or other watertight material. The interceptor shall have an interior baffle for full separation of the interceptor into two sections. The outlet pipe shall be the same size as the inlet pipe of the sand interceptor, the minimum being 3 inches (80 mm), and the baffle shall have two openings of the same diameter as the outlet pipe and at the same invert as the outlet pipe. These openings shall be staggered so that there cannot be a straight line flow between the inlet pipe and the outlet pipe. The invert of the inlet pipe shall be no lower than the invert of the outlet pipe.

  The sand interceptor shall have a minimum dimension of 2 square feet (0.2 m [2] ) for the net free opening of the inlet section and a minimum depth under the invert of the outlet pipe of 2 feet (610 mm).

  For each 5 gpm (0.3 L/s) flow or fraction thereof over 20 gpm (1.26 L/s), the area of the sand interceptor inlet section is to be increased by 1 square foot (0.09 m [2] ). The outlet section shall at all times have a minimum area of 50 percent of the inlet section.

  The outlet section shall be covered by a solid removable cover, set flush with the finished floor, and the inlet section shall have an open grating, set flush with the finished floor and suitable for the traffic in the area in which it is located.

  1016.4 Separate Use. Sand and similar interceptors for every solid shall be so designed and located as to be readily accessible for cleaning, shall have a water seal of not less than 6 inches (152 mm), and shall be vented.

  1017.0 Oil and Flammable Liquid Interceptors.

  1017.1 Interceptors Required. 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. Floor drains in such locations shall be connected directly to oil and flammable liquid interceptors.

• CPC § 1017.2 High relevance — show source text

  1017.2 Interceptor Design Alternatives. Oil interceptors shall comply with IAPMO IGC 183 or be in accordance with Section 1017.3 through Section 1017.4.

  1017.3 Interceptor Details. Oil and flammable liquid interceptors shall be in accordance with the following:

  (1) 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.

  (2) 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.

  (3) 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.

  (4) The waste line shall be not less than 3 inches (80 mm) in diameter with a full-size cleanout to grade.

  (5) Where an interceptor is provided with an overflow, it shall be provided with an overflow line [not less than 2 inches (50 mm) in diameter] to an approved waste oil tank having a minimum capacity of 550 gallons (2082 L) and meeting the requirements of the Authority Having Jurisdiction.

  (a) The waste oil from the separator shall flow by gravity or shall be pumped to a higher elevation by an automatic pump.

  (b) Pumps shall be adequately sized and accessible.

  (c) Waste oil tanks shall have a 2 inch (50 mm) minimum pump-out connection at grade and an 1 [1] ⁄ 2 inch (40 mm) minimum vent to atmosphere at an approved location not less than 10 feet (3048 mm) above grade. 1017.4 Design of Interceptors. Each manufactured interceptor that is rated shall be stamped or labeled by the manufacturer with an indication of its full discharge rate in gpm (L/s). The following shall apply:

  (1) The full discharge rate to such an interceptor shall be determined at full flow. Each interceptor shall be rated equal to or greater than the incoming flow and shall be provided with an overflow line to an underground tank.

  (2) Interceptors not rated by the manufacturer shall have a depth of not less than 2 feet (610 mm) below the invert of the discharge drain. The outlet opening shall have not

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  200 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  TRAPS AND INTERCEPTORS

  less than an 18 inch (457 mm) water seal and shall have a minimum capacity as follows:

  (a) Where not more than three motor vehicles are serviced, stored, or both, interceptors shall have a minimum capacity of 6 cubic feet (0.2 m [3] ), and 1 cubic foot (0.03 m [3] ) of capacity shall be added for each vehicle up to 10 vehicles.

  (b) Above 10 vehicles, the Authority Having Jurisdiction shall determine the size of the interceptor required.

• CPC § 1015.0 High relevance — show source text

  1015.0 FOG (Fats, Oils, and Greases) Disposal System . . . . . . . . . . . . . .199

  1015.1 Purpose . . . . . . . . . . . . . . . . . . . .199

  1015.2 Components, Materials, and Equipment . . . . . . . . . . . . . . . . . .200

  1015.3 Sizing and Installation . . . . . . . . .200

  1015.4 Performance . . . . . . . . . . . . . . . . .200

  1016.0 Sand Interceptors . . . . . . . . . . . . .200

  1016.1 Discharge . . . . . . . . . . . . . . . . . . .200

  1016.2 Authority Having Jurisdiction . . . .200

  1016.3 Construction and Size . . . . . . . . .200

  1016.4 Separate Use . . . . . . . . . . . . . . . .200

  1017.0 Oil and Flammable Liquid Interceptors . . . . . . . . . . . . . . . . . .200

  1017.1 Interceptors Required . . . . . . . . . .200

  1017.2 Interceptor Design Alternatives . . .200

  1017.3 Interceptor Details . . . . . . . . . . . .200

  1017.4 Design of Interceptors . . . . . . . . .200

  CHAPTER 11 STORM DRAINAGE . . . . . . . . . .203

  1101.0 General . . . . . . . . . . . . . . . . . . . . .205

  1101.1 Applicability . . . . . . . . . . . . . . . . . .205

  1101.2 Where Required . . . . . . . . . . . . . .205

  1101.3 Storm Water Drainage to Sanitary Sewer Prohibited . . . . . .205

  1101.4 Material Uses . . . . . . . . . . . . . . . .205

  Table 1101.4.6 Materials for Subsoil Drainpipe and Fittings . . . . . . . . . . . . . . . . . .205

  1101.5 Expansion Joints Required . . . . . .205

  1101.6 Subsoil Drains . . . . . . . . . . . . . . .205

  1101.7 Building Subdrains . . . . . . . . . . . .206

  1101.8 Areaway Drains . . . . . . . . . . . . . .206

  1101.9 Window Areaway Drains . . . . . . .206

  1101.10 Filling Stations and Motor Vehicle Washing Establishments . . . . . . . . . . . . . . .206

  1101.11 Paved Areas . . . . . . . . . . . . . . . . .206

  1101.12 Roof Drainage . . . . . . . . . . . . . . .206

  1101.13 Cleanouts . . . . . . . . . . . . . . . . . . .207

  1101.14 Rainwater Sumps . . . . . . . . . . . . .207

• CPC § 801.0 Medium relevance — show source text

  H 801.0 Cesspools.

  H 801.1 Limitations. A cesspool shall be considered as a temporary expedient pending the construction of a public sewer; as an overflow facility where installed in conjunction with an existing cesspool; or as a means of sewage disposal for limited, minor, or temporary uses, where first approved by the Authority Having Jurisdiction.

  H 801.2 Septic Tanks. Where it is established that a public sewer system will be available in less than 2 years, and soil and groundwater conditions are favorable to cesspool disposal, cesspools without septic tanks shall be permitted to be installed for single-family dwellings or for other limited uses where first approved by the Authority Having Jurisdiction.

  H 801.3 Construction. Each cesspool, where permitted, shall be in accordance with the construction requirements set forth in Section H 701.0 of this appendix for seepage pits and shall have a sidewall (not including arch) of not less than 20 feet (6096 mm) below the inlet, provided, however, that

  2025 CALIFORNIA PLUMBING CODE 443

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  APPENDIX H

  where a strata of gravel or equally pervious material of 4 feet (1219 mm) in thickness is found, the depth of such sidewall shall not exceed 10 feet (3048 mm) below the inlet.

  H 801.4 Existing Installations. Where overflow cesspools or seepage pits are added to existing installations, the effluent shall leave the existing pit through an approved vented leg extending not less than 12 inches (305 mm) downward into such existing pit and having its outlet flow line not less than 6 inches (152 mm) below the inlet. The pipe between pits shall be laid with approved watertight joints.

  H 901.0 Commercial or Industrial Special Liquid- Waste Disposal.

  H 901.1 Interceptor. Where liquid wastes contain excessive amounts of grease, garbage, flammable wastes, sand, or other ingredients that affect the operation of a private sewage disposal system, an interceptor for such wastes shall be installed.

  H 901.2 Installation. Installation of such interceptors shall comply with Section 1009.0 of this code, and their location shall comply with Table H 101.8 of this appendix. H 901.3 Sampling Box. A sampling box shall be installed where required by the Authority Having Jurisdiction. H 901.4 Design and Structural Requirement. Interceptors shall be of approved design and be not less than two compartments. Structural requirements shall comply with Section H 501.0 of this appendix.

  H 901.5 Location. Interceptors shall be located as close to the source as possible and be accessible for servicing. Necessary manholes for servicing shall be at grade level and be gastight.

  H 901.6 Waste Discharge. Waste discharge from interceptors shall be permitted to be connected to a septic tank or other primary system or be disposed into a separate disposal system. H 901.7 Design Criteria. A formula shall be permitted to be adapted to other types of occupancies with similar wastes. (See Chart H 901.7)

  H 1001.0 Inspection and Testing. H 1001.1 Inspection. Inspection requirements shall comply with the following:

• CPC § 1014.3.6 Medium relevance — show source text

  Rounded up to nominal interceptor volume. 3 Where the flow rate of directly connected fixture(s) or appliance(s) have no assigned DFU values, the additional grease interceptor volume shall be based on the known flow rate (gpm) (L/s) multiplied by 30 minutes.

  EXAMPLE 1014.3.6

  GRAVITY GREASE INTERCEPTOR SIZING EXAMPLE

  Given: A restaurant with the following fixtures and equip ment.

  One food preparation sink; three-floor drains - one in the food prep area, one in the grill area, and one receiving the indirect waste from the ice machine and a mop sink.

  Kitchen Drain Line DFU Count (from Table 702.1):

  3 floor drains at 2 DFUs each = 6 DFUs

  Mop sink at 3 DFUs each = 3 DFUs

  Food prep sink at 3 DFUs each = 3 DFUs

  Total = 12 DFUs

  Using Table 1014.3.6, the grease interceptor will be sized at 750 gallons (2389 L).

  1015.0 FOG (Fats, Oils, and Greases) Disposal Sys- tem.

  1015.1 Purpose. The purpose of this section is to provide the necessary criteria for the sizing, application, and installation of FOG disposal systems designated as a pretreatment or discharge water quality compliance strategy.

  TABLE 1014.3.6

  GRAVITY GREASE INTERCEPTOR SIZING

  2025 CALIFORNIA PLUMBING CODE 199

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  TRAPS AND INTERCEPTORS

  1015.2 Components, Materials, and Equipment. FOG disposal systems, including components, materials, and equipment necessary for the proper function of the system, shall comply with ASME A112.14.6. 1015.3 Sizing and Installation. FOG disposal systems shall be sized and installed in accordance with the manufac turer’s installation instructions.

  1015.4 Performance. FOG disposal systems shall produce an effluent quality not to exceed 5.84 grains per gallon (gr/gal) (100 mg/L) FOG. 1015.5 [OSHPD 1, 1R, 2, 3, 4 & 5] Grease interceptors shall not be installed in food preparation area of kitchens. 1015.6 [OSHPD 1, 1R, 2, 3, 4 & 5] Grease interceptors shall be installed outside of the kitchen area in location affording ease of maintenance and servicing.

  1016.0 Sand Interceptors.

  1016.1 Discharge. Where the discharge of a fixture or drain contains solids or semi-solids heavier than water that would be harmful to a drainage system or cause a stoppage within the system, the discharge shall be through a sand interceptor. Multiple floor drains shall be permitted to discharge into one sand interceptor. 1016.2 Authority Having Jurisdiction. Sand interceptors are required where the Authority Having Jurisdiction deems it advisable to have a sand interceptor to protect the drainage system. 1016.3 Construction and Size. Sand interceptors shall be built of brick or concrete, prefabricated coated steel, or other watertight material. The interceptor shall have an interior baffle for full separation of the interceptor into two sections.

• CPC § 1011.0 Medium relevance — show source text

  1010.4 Horse Meat and Pet Food

  Establishments . . . . . . . . . . . . . . .197

  1010.5 Draining and Plumbing . . . . . . . .197

  1011.0 Minimum Requirements for Auto Wash Racks . . . . . . . . . . . . .197

  1011.1 General . . . . . . . . . . . . . . . . . . . . .197

  1012.0 Commercial and Industrial

  Laundries . . . . . . . . . . . . . . . . . . .197

  1012.1 General . . . . . . . . . . . . . . . . . . . . .197

  1013.0 Bottling Establishments . . . . . . . .197

  1013.1 General . . . . . . . . . . . . . . . . . . . . .197

  1014.0 Grease Interceptors . . . . . . . . . . .197

  1014.1 General . . . . . . . . . . . . . . . . . . . . .197

  1014.2 Hydromechanical Grease Interceptors . . . . . . . . . . . . . . . . . .198

  Table 1014.2.1 Hydromechanical Grease Interceptor Sizing Using Gravity Flow Rates . . . . . . . . . . . .198

  1014.3 Gravity Grease Interceptors . . . . .198

  Table 1014.3.6 Gravity Grease Interceptor Sizing . . . . . . . . . . . . . . . . . . . . . .199

  1015.0 FOG (Fats, Oils, and Greases) Disposal System . . . . . . . . . . . . . .199

  1015.1 Purpose . . . . . . . . . . . . . . . . . . . .199

  1015.2 Components, Materials, and Equipment . . . . . . . . . . . . . . . . . .200

  1015.3 Sizing and Installation . . . . . . . . .200

  1015.4 Performance . . . . . . . . . . . . . . . . .200

  1016.0 Sand Interceptors . . . . . . . . . . . . .200

  1016.1 Discharge . . . . . . . . . . . . . . . . . . .200

  1016.2 Authority Having Jurisdiction . . . .200

  1016.3 Construction and Size . . . . . . . . .200

  1016.4 Separate Use . . . . . . . . . . . . . . . .200

  1017.0 Oil and Flammable Liquid Interceptors . . . . . . . . . . . . . . . . . .200

  1017.1 Interceptors Required . . . . . . . . . .200

  1017.2 Interceptor Design Alternatives . . .200

  1017.3 Interceptor Details . . . . . . . . . . . .200

  1017.4 Design of Interceptors . . . . . . . . .200

  CHAPTER 11 STORM DRAINAGE . . . . . . . . . .203

  1101.0 General . . . . . . . . . . . . . . . . . . . . .205

• CPC § 1004.2 Medium relevance — show source text

  1004.2 Movable Parts. Bladders, check valves or another type of devices with moveable parts shall be prohibited to serve as a trap.

  1005.0 Trap Seals. 1005.1 General. Each fixture trap shall have a liquid seal of not less than 2 inches (51 mm) and not more than 4 inches (102 mm), except where a deeper seal is found necessary by the Authority Having Jurisdiction. Traps shall be set true with respect to their liquid seals and, where necessary, they shall be protected from freezing.

  1006.0 Floor Drain Traps. 1006.1 General. Floor drains shall connect into a trap so constructed that it can be readily cleaned and of a size to serve efficiently the purpose for which it is intended. The drain inlet shall be so located that it is in full view. Where subject to the reverse flow of sewage or liquid waste, such drains shall be equipped with an approved backwater valve.

  1007.0 Trap Seal Protection. 1007.1 General. Floor drain or similar traps directly connected to the drainage system and subject to infrequent use shall be protected with a trap seal primer, except where not deemed necessary for safety or sanitation by the Authority Having Jurisdiction. Trap seal primers shall be accessible for maintenance.

  1007.2 Trap Seal Primers. Potable water supply trap seal primer valves shall comply with ASSE 1018. Drainage or electronic design type trap seal primer devices shall comply with ASSE 1044 or IAPMO PS 76.

  1008.0 Building Traps. 1008.1 General. Building traps shall not be installed except where required by the Authority Having Jurisdiction. Each building trap where installed shall be provided with a cleanout and with a relieving vent or fresh-air intake on the inlet side of the trap, which needs not be larger than one-half the diameter of the drain to which it connects. Such relieving vent or fresh-air intake shall be carried above grade and terminate in a screened outlet located outside the building.

  1009.0 Interceptors (Clarifiers) and Separators.

  1009.1 Where Required. Interceptors (clarifiers) (including grease, oil, sand, solid interceptors, etc.) shall be required

  by the Authority Having Jurisdiction where they are necessary for the proper handling of liquid wastes containing grease, flammable wastes, sand, solids, acid or alkaline substances, or other ingredients harmful to the building drainage system, the public or private sewer, or to public or private sewage disposal. A list of acceptable interceptor standards is referenced in Table 1009.1.

  TABLE 1009.1 APPROVED INTERCEPTORS (CLARIFIERS)

• CPC § 1007.2 Medium relevance — show source text

  1007.2 Trap Seal Primers. Potable water supply trap seal primer valves shall comply with ASSE 1018. Drainage or electronic design type trap seal primer devices shall comply with ASSE 1044 or IAPMO PS 76.

  1008.0 Building Traps. 1008.1 General. Building traps shall not be installed except where required by the Authority Having Jurisdiction. Each building trap where installed shall be provided with a cleanout and with a relieving vent or fresh-air intake on the inlet side of the trap, which needs not be larger than one-half the diameter of the drain to which it connects. Such relieving vent or fresh-air intake shall be carried above grade and terminate in a screened outlet located outside the building.

  1009.0 Interceptors (Clarifiers) and Separators.

  1009.1 Where Required. Interceptors (clarifiers) (including grease, oil, sand, solid interceptors, etc.) shall be required

  by the Authority Having Jurisdiction where they are necessary for the proper handling of liquid wastes containing grease, flammable wastes, sand, solids, acid or alkaline substances, or other ingredients harmful to the building drainage system, the public or private sewer, or to public or private sewage disposal. A list of acceptable interceptor standards is referenced in Table 1009.1.

  TABLE 1009.1 APPROVED INTERCEPTORS (CLARIFIERS)

  APPLICATION	STANDARD
  Fats, Oil, Grease (FOG)	ASME A112.14.3, ASME A112.14.4, ASME A112.14.6, CSA B481, ANSI/CAN/IAPMO Z1001, PDI G-101, PDI G-102
  Solid Waste	IAPMO IGC 167
  Non-petroleum Oil	ASME A112.14.6, IAPMO PS 80, PDI G-102
  Petroleum Oil	ASTM D6104, IAPMO IGC 183, IAPMO IGC 325

  1009.2 Approval. The size, type, and location of each interceptor (clarifier) or separator shall be approved by the Authority Having Jurisdiction. Except where otherwise specifically permitted, no wastes other than those requiring treatment or separation shall be discharged into an interceptor (clarifier). 1009.3 Design. Interceptors (clarifiers) for sand and similar heavy solids shall be so designed and located as to be readily accessible for cleaning and shall have a water seal of not less than 6 inches (152 mm). 1009.4 Relief Vent. Interceptors (clarifiers) shall be so designed that they will not become air-bound where closed covers are used. Each interceptor (clarifier) shall be properly vented.

• CPC § 3108.12.1 Medium relevance — show source text

  3108.12.1 Installation. Heating or cooking equipment, tanks, piping, hoses, fittings, valves, tubing and other related components shall be installed as specified in the International Fuel Gas Code and the California Mechanical Code, and shall be approved by the fire code official.

  3108.12.2 Venting. Gas, liquid and solid fuel-burning equipment designed to be vented shall be vented to the outside air as specified in the International Fuel Gas Code and the California Mechanical Code . Such vents shall be equipped with approved spark arresters where required. Where vents or flues are used, all portions of the tent or membrane structure shall be not less than 12 inches (305 mm) from the flue or vent.

  3108.12.3 Location. Cooking and heating equipment shall not be located within 10 feet (3048 mm) of exits or combustible materials.

  3108.13 Flammable and combustible liquids. The storage of flammable and combustible liquids and the use of flammable-liquidfueled equipment shall be in accordance with Sections 3108.13.1 through 3108.13.3.

  3108.13.1 Use. Flammable-liquid-fueled equipment shall not be used in tents or membrane structures.

  3108.13.2 Flammable and combustible liquid storage. Flammable and combustible liquids shall be stored outside in an approved manner not less than 50 feet (15 240 mm) from tents or membrane structures. Storage shall be in accordance with Chapter 57.

  [California Code of Regulations, Title 19, Division 1, §324.(a) and (b)] Flammable and Combustible Liquids.

  (a) Liquids having a flash point below 200°F shall not be stored in any tent nor less than 50 feet from any tent.

  (b) Flammable or combustible liquids shall be stored and dispensed in accordance with the provisions of the California Fire Code. The enforcing authority may permit limited quantities of flammable or combustible liquids required for display and normal merchandising.

  3108.13.3 Refueling. Refueling shall be performed in an approved location not less than 20 feet (6096 mm) from tents or membrane structures.

  3108.14 Display of motor vehicles. Liquid- and gas-fueled vehicles and equipment used for display within tents or membrane structures shall be in accordance with Sections 3108.14.1 through 3108.14.5.3.

  3108.14.1 Batteries. Batteries shall be disconnected except where the fire code official requires that the batteries remain connected to maintain safety features.

  3108.14.2 Fuel. Vehicles or equipment shall not be fueled or defueled within the tent or membrane structure.

  3108.14.2.1 Quantity limit. Fuel in the fuel tank shall not exceed one-quarter of the tank capacity or 5 gallons (19 L), whichever is less.

  3108.14.2.2 Inspection. Fuel systems shall be inspected for leaks.

  3108.14.2.3 Closure. Fuel tank openings shall be locked and sealed to prevent the escape of vapors.

  3108.14.3 Location. The location of vehicles or equipment shall not obstruct means of egress.

• CPC § 1009.1 Medium relevance — show source text

  TABLE 1009.1 APPROVED INTERCEPTORS (CLARIFIERS)

  APPLICATION	STANDARD
  Fats, Oil, Grease (FOG)	ASME A112.14.3, ASME A112.14.4, ASME A112.14.6, CSA B481, ANSI/CAN/IAPMO Z1001, PDI G-101, PDI G-102
  Solid Waste	IAPMO IGC 167
  Non-petroleum Oil	ASME A112.14.6, IAPMO PS 80, PDI G-102
  Petroleum Oil	ASTM D6104, IAPMO IGC 183, IAPMO IGC 325

  1009.2 Approval. The size, type, and location of each interceptor (clarifier) or separator shall be approved by the Authority Having Jurisdiction. Except where otherwise specifically permitted, no wastes other than those requiring treatment or separation shall be discharged into an interceptor (clarifier). 1009.3 Design. Interceptors (clarifiers) for sand and similar heavy solids shall be so designed and located as to be readily accessible for cleaning and shall have a water seal of not less than 6 inches (152 mm). 1009.4 Relief Vent. Interceptors (clarifiers) shall be so designed that they will not become air-bound where closed covers are used. Each interceptor (clarifier) shall be properly vented.

  1009.5 Location. Each interceptor (clarifier) cover shall be readily accessible for servicing and maintaining the interceptor (clarifier) in working and operating condition. The use of ladders or the removal of bulky equipment to service interceptors (clarifiers) shall constitute a violation of accessibility. Location of interceptors (clarifiers) shall be shown on the approved building plan. 1009.6 Maintenance of Interceptors. Interceptors shall be maintained in efficient operating condition by periodic removal of accumulated grease, scum, oil, or other floating substances and solids deposited in the interceptor. 1009.7 Discharge. The waste pipe from oil and sand interceptors shall discharge as approved by the Authority Having Jurisdiction.

  1010.0 Slaughterhouses, Packing Establishments, etc.

  1010.1 General. A fish, fowl, and animal slaughterhouse or establishment; a fish, fowl, and meat packing or curing establishment; a soap factory, tallow-rendering, fat-rendering, and a hide-curing establishment shall be connected to and shall drain or discharge into an approved grease interceptor (clarifier).

  TABLE 1009.1 APPROVED INTERCEPTORS (CLARIFIERS)

  196 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  TRAPS AND INTERCEPTORS

  1010.2 Meat and Poultry Processing Plants. [AGR]

  1010.2.1 Drainage and Plumbing Systems. Drainage and plumbing systems shall meet the require- ments of Section 724.0.

  1010.2.1.1 Each floor drain shall be equipped with a deep-seal trap.