This is technical laboratory work performing standardized routine tests on substances to determine specified chemical and physical properties using wet chemistry and/or the less complex instrumental techniques. Work usually requires scheduled sampling and the execution of repetitive tests. Employees in this class who are assigned to testing raw and treated drinking water or wastewater work on an assigned shift. Work is performed under the supervision of a technical supervisor. Work involves some disagreeable aspects.

• Performs standardized chemical tests on raw and treated drinking water samples at regular intervals; prescribes, on the basis of established test, the amounts of chemicals to be added to the treatment process; notifies plant operators of test results requiring changes in chemical treatment.
• Uses standardized procedures to test raw and treated water samples for alkalinity, fluorides, taste, clarity, odor, algae, turbidity, chlorine, phosphates, manganese, pH level and similar physical and chemical properties.
• Uses standardized procedures to test sludge, raw waste water, primary effluent, chlorinated effluent and floc samples for total solids, pH levels, volatile acids, suspended solids, dissolved oxygen content and similar physical and chemical properties.
• Performs standardized tests to determine quality of materials and commodities such as water treatment chemicals, textiles, paper products, soils and sands.
• Performs standardized chemical tests to determine the extent and content of pollutants in the air; determines the radioactivity of water, food and air by use of standardized radio-chemical tests and radiation indicators.
• Makes chemical calculations during testing process.
• Uses analytical instruments such as pH meters, titrators and turbidimeters.
• Posts test results; may enter or retrieve information on computer terminal.
• Prepares necessary analytical reagents and standardized solutions; standardizes and maintains equipment and instruments; cleans test equipment and assigned work area.
• Maintains records of work performed and compiles report data.
• Performs related work as required.

KNOWLEDGE OF:

• the methods and practices used in standard chemical tests.
• the principles of chemistry.
• mathematics and its application to chemistry.
• the analytical techniques including the use of laboratory equipment and materials.

SKILL IN:

• the use and care of laboratory equipment, instruments and materials.

• perform standardized tests and to make repetitive chemical analyses quickly and accurately.
• prepare reports and logs showing results of tests and analyses.
• read laboratory instruments.
• communicate effectively, both orally and in writing.

• Completion of fifteen semester hours in chemistry at an accredited college or university which has included six semester hours in chemical laboratory work.
  OR

• Completion of a two year program at a technical institute with major course work in water technology, biology, chemistry, environmental studies, or medical technology.
  OR

• Completion of a one year program at a technical institute with major course work in water technology, biology, chemistry, environmental studies, or medical technology.
• Six months experience performing basic chemical, bacteriological, or medical testing.

PHYSICAL AND MEDICAL REQUIREMENTS

• Ability to physically perform the duties and to work in the environmental conditions required of a position in this class.

PAY RANGE: 12
Class Established: 11/1966
Latest Spec. Revision: 6/1989

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