he significant elements of this investigation. ASSESSMENT COMPONENT ACCEPTABLE ROUTINE SOLUTION PHASE II ESTIMATED COST REFERENCE SECTION Historical Review X 4.4 On-site Operations X 53 / 5.4 Hazardous Materials X 5.5.1 Waste Generation X 5.5.1.2 PCBs X 5.5.3 Asbestos X 5500 5.5.10 Lea