42 chemical analysis; chemical laboratory research and development; chemical process engineering and designing; chemistry consultation; testing of soil, water, air, hazardous waste, and underground storage tanks and computation of results; soil, water, air, and hazardous waste characterization; underground storage tank analysis; testing of lubricants, fuels, oxygenated fuels, paints, coatings, and adhesives for properties and performance including interpretation of test data and analysis of performance and modes of failure; and analysis of product performance; product development; chemical formulations; deformulations; improved reformulations; natural products isolation and purification; extraction of flavors; extraction of colorings; analytical identification of unknown constituents, chemical compositions, and plastics; polymer identification; plastics formulation; quality control evaluations of final products and raw materials