Bacterial genes, gene identification, environmental pollutants, environmental contaminants, toxicity,genetics, environmental pollution, environmental contamination, resistant genes, microbial resistance, heavy metal resistance,  PAH degradation, contamination, heavy metals, polymerase chain reactions , lead, cadmium, mercury, zinc, cobalt, mercury resistance, cadmium resistance, lead resistance, zinc resistance, cobalt resistance, Polycyclic Aromatic hydrocarbons, PAHs, 16S RNA, Alcaligenes sp. AO22, Achromobacter sp. AO22 , Arthobacter sp. E9, A. Woluwensis, Stenotrophomonas maltophilia, Minimum Inhibitory Concentration assays, MICs, S. maltophilia VUN 10010, pyrene, HMW PAHs, Mycobacteriu, methylmercury chloride, phenylmercury acetate, mer genes, organomercurial lyase, HgCl2, Reverse Transcriptase PCR, RT-PCR, HgCl2, biofilms, pseudomonas aeruginosa, chloride, nitrate,  pbr operon,  C. metallidurans CH34, cad operon, S. aureus pI258, Consortium VUN 10010