The Inorganic Contract Compliance Screening System (ICCSS) software is a version of a mainframe-based application developed for the U.S. Environmental Protection Agency's National Contract Laboratory Program (CLP). ICCSS is designed to automate the determination of contractual compliance and completeness of data submitted to EPA under the Routine Analytical Services (RAS) programs of CERCLA (Comprehensive Environmental Response Compensation and Liability Act) and SARA (Superfund Amendments and Reauthorization Act). The manual provides the user with instructions for running ICCSS software on the PC. Descriptions of and instructions for each menu are detailed in the following sections. The user should have a working knowledge of PC DOS prior to utilizing this system. The following sections present the ICCSS operating environment, describe system output (reports), provide instructions for running the system and generating reports, and specify input data requirements. Examples of reports are contained in Appendix A. Appendix B contains descriptions of report defect codes and text. Appendix C is a listing of defect statements by criterion with associated SOW references. Data Format A from the Inorganic RAS SOW (3/90) is included as Appendix D. Since ICCSS PC software is implemented using Base SAS Software, the 'SAS Language Guide for Personal Computers' from The SAS Institute, Inc. in Cary, North Carolina may be helpful.