The document discusses different types of impact assessments including environmental impact assessment (EIA), economic impact assessment (EcIA), energy analysis and greenhouse assessment, health impact assessment (HIA), regulatory impact assessment (RIA), risk analysis (RA), social impact assessment (SIA), species impact assessment, technology assessment (TA), cumulative impact assessment (CIA), strategic environmental assessment (SEA), integrated impact assessment (IIA), and sustainable impact assessment (SIA). It notes that discussion next time will focus on "the public face," reading documents, discussion, and summarizing the study.