Kingsgrove to Earlwood Rail Electricity Supply REF (pdf 1.6MB)

specifically designed to support potential contamination issues related to infrastructureupgrade works.Table 7: Soil contamination status (refer to Appendix F)LaboratorySummary of the laboratory resultsanalytesExceedanceHeavy metalsAsbestosTPH (TotalPetroleumHydrocarbons) /TRH (TotalRecoverableHydrocarbons)BTEX (Benzene,Toluene, Ethylene,Xylene)PAH (PolycyclicAromaticHydrocarbons)All metal concentrations were generallyreported below guideline human healthscreening criteria for commercial / industrialland use.No asbestos fibres were reported in any of thesamples submitted for analysisConcentrations of TPH were all found to bebelow the laboratory limit of reporting in eachof the samples, with the exception of samplelocation 7 (325507.77 E, 6243165.40 N) , whichrecorded positive concentrations of TPH C10 –C36 (410 mg/kg). When the same sample istested for TRH in accordance with NEPM (draft2010) a positive concentration of TRH C10 –C40 (660 mg/kg) is recorded. The thresholdTPH C10 – C40 concentration for sensitive landuse in accordance with NSW EPA Guideline forassessing service station sites (1994) is 1000mg/kg, which is considered conservative forthe proposal.Below the laboratory limit of reporting in eachof the samples submitted for analysisGenerally below the laboratory limit ofreporting in each of the samples submitted foranalysis. Sample location 7 (325507.77 E,6243165.40 N) recorded positive detection ofPAH.It should be noted thattwo samples, Sample 8(Location: 325622.00 E,6243180.00 N)(313 mg/kg)and Sample 12 (Location:326014.71E, 6243393.51N)(112 mg/kg), containedconcentrations of copperexceeding guidelineecological screeningcriteria of 100 mg/kg.NANANANAPCB Below the laboratory limit of reporting in each NAPage 34