3.1 Prior to beginning a project that involves the removal, cutting, grinding, or burning of paint, it is necessary to determine if the coating contains hazardous materials, such as lead, as certain requirements for worker and environmental protection may need to be imposed. The presence and quantity of hazardous materials in a paint can be determined through laboratory analysis; however, since the analysis is based on the weight of the specimen, the removal of the sample must be properly controlled to improve the reliability of the test results. The number and location of samples to be removed must also be determined to characterize properly the extent of the presence of hazardous materials, if any, on a structure.