This report summarizes the results of a spiking study performed on a sanitary landfill leachate matrix. Fifteen polynuclear aromatic hydrocarbons (PNAs) were dosed into the landfill leachate and analyzed using EPA Method 610. The results show that the PNAs containing two, three, or four fused rings gave recoveries greater than 50%. Those PNAs containing five or six fused rings gave recoveries less than 50%. All PNAs were spiked at the low micrograms/L to the mid ng/L range. The leachate matrix was also analyzed by gas chromatography/mass spectrometry (GS/MS) to identify the compounds present in this complex matrix. Forty-three compounds were given a tentative or confirmed identification after packed column and capillary column GC/MS analysis. There were an additional 65 compounds present in the leachate extract that could not be identified. Further research needs to be performed to improve the accuracy for the analysis of high molecular weight PNAs in leachate samples.