Aug 28, 2017 · 2. SM 6440 B-2005, polynuclear aromatic hydrocarbons (PAHs), high performance liquid chromatography (HPLC) The following identifies new versions of previously approved methods that EPA is including in Table ID at 40 CFR part 136: 1. SM 6630 (B, C)-2007, organochlorine pesticides, gas chromatography (GC) 2.