Recently Relining Services rehabilitated a defected grease trap and increased the capacity fromm a 1000 Litre trap to a 2000 Litre trap. The Gold Coast City Council had defected several areas and over charging an undersized grease trap was one. There were limited options with this trap being located close to a load bearing wall. You can not undermine structural foundations to replace, therefore rehabilitation was an excellent option. 8 December, 2009.