Section 410 IAC 6-10.1-66 - Grease trapsAuthority: IC 16-19-3-4; IC 16-19-3-5
Affected: IC 16-19-3-4
Sec. 66.
(a) A grease trap shall be provided for the following: (1) All commercial buildings with food service.(2) All other commercial buildings with fats, oils, and grease greater than twenty-five (25) mg/L.(b) Grease traps shall be:(1) a commercially manufactured grease trap or grease recovery system installed inside the building and sized according to the manufacturer's recommendations and in accordance with the Uniform Plumbing Code;(2) a commercially manufactured grease trap or grease recovery system installed outside the building and sized according to the manufacturer's recommendations; or(3) an approved septic tank installed outside the building with the: (A) outlet baffle extended to within six (6) inches of the tank bottom; and(B) septic tank risers extended to grade and covered with a securely fastened lid.(c) Sewage from food service sinks, dishwashers, and kitchen floor drains shall discharge to the grease trap. All other sewage from the facility shall be discharged directly to a septic tank.(d) The size of the grease trap shall be determined by the following formula: (1) grease trap size (in gallons) = M × W × R × S(2) Where: (A) M = Meals served at peak hour(B) W = Waste flow rate: (i) With dishwashing machine = 6 gallons(ii) Without dishwashing machine = 5 gallons(iii) Single service kitchen = 2 gallons(iv) Food waste disposal only = 1 gallon(C) R = Retention time: (i) With dishwasher = 2.5 hours(ii) Single service = 1.5 hours(D) S = Storage factor: (i) Fully equipped kitchen, 8 hour operation = 1(ii) Fully equipped kitchen, 16 hour operation = 2(iii) Fully equipped kitchen, 24 hour operation = 3(iv) Single service kitchen = 1.5 Except that the minimum storage capacity shall not be less than one thousand (1,000) gallons and does not need to exceed two thousand (2,000) gallons.Indiana State Department of Health; 410 IAC 6-10.1-66; filed Oct 19, 2012, 2:07 p.m.: 20121114-IR-410120157FRAReadopted filed 9/26/2018, 2:48 p.m.: 20181024-IR-410180328RFA