Ability to use laboratory equipment, including pH meter, dissolved oxygen meter, analytical balance, specific ion meter, spectrophotometer, incubator, autoclave, Orsat appliance, TKN digestion apparatus and still, cyanide still, COD digestion block, methane analyzer, toxic gas monitor, ISCO and Sigma samplers, flow meters and ICP-OES spectrophotometer. Graduation from high school or GED, preferably supplemented by college-level coursework or training in chemistry, biology, or microbiology, and experience in conducting chemical and bacteriological laboratory tests; or any equivalent combination of training and experience that provides the following knowledge, skills, and abilities listed.