**Richmond Sewage Treatment Plant – TasWater Customer Water Investigation**

Sludge A 13/6/23: EtFOSAA 0.0217mg/kg, MeFOSAA 0.0129mg/kg, MEFOSE 0.0037mg/kg, PFOS 0.007mg/kg. Sum of PFAS 0.0453, Sum of PFAS (WA DER LIST) 0.007mg/kg, Sum of PFHxS & PFOS 0.007mg/kg

Sludge B 13/6/23: EtFOSAA 0.0082mg/kg, MeFOSAA 0.0057mg/kg, PFOS 0.0029mg/kg. Sum of PFAS 0.0168, Sum of PFAS (WA DER LIST) 0.0029mg/kg, Sum of PFHxS & PFOS 0.0029mg/kg

Sludge C 13/6/23: EtFOSAA 0.0254mg/kg, MeFOSAA 0.0152mg/kg, PFOS 0.0098mg/kg. Sum of PFAS 0.0504, Sum of PFAS (WA DER LIST) 0.0098mg/kg, Sum of PFHxS & PFOS 0.0098mg/kg