Many of the standard operating procedures in the Lead Hazard Management Plan include sampling and analytical requirements for lead in air, soil, dust, paint and wastes. This chapter addresses the steps that are necessary to ensure that appropriate, reliable sampling and analytical data are obtained to support the decision making process. As outlined in Figure 17.1, the critical tasks include establishing data collection objectives; developing a sampling and analytical plan that implements procedures for quality control and documentation; conducting the sampling and analysis; and compiling the report.