Nationally and statewide: More focus on proper grease interceptor cleaning and service frequency rather than sampling to judge compliance Sampling interceptors is a tool: Helps to measure performance and efficiency of the grease interceptor Useful information for chronic problem areas
Grab sample: Only collection method recognized for compliance determination by EPA Collection – Typically a wide mouth 1000 ml glass container is used, depending on the lab used: dip and take method; Not recommended to transfer sample to another container
Grab sample 1000 ml Wide Mouth Glass Container Teflon lined Cap Preserved with H 2 SO 4 or HCl to <2.0 std. units Refrigerate 6.0 C Maximum hold time 28 days EPA Manual for Industrial User Inspection And Sampling Manual for POTW’s, April 1994
1000 ml Glass Sample Container Sulfuric or Hydrochloric Acids (Preservation) pH Meter Thermometer pH Test Strips Chain of Custody/Labels PPE (Personal Protective Equipment) Cooler with Wet Ice
Summary of FOG Sampling : Use sampling of grease interceptors as a tool of a good FOG Inspection program not the only tool. FOG Ordinance- Will you use an enforcement limit or action level. Educate your FSE’s and help them stay in compliance.
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