Terms and Definitions 1 Preliminary preparation of work process First-level inspection Second-level inspection Third-level inspection.7. Quality control requirements...10 Results submission requirements...Appendix A "Normative Appendix" Appendix B "Normative Appendix) Donacwmwmnbr=n Book II | HJ1232-2021 In order to implement the "Environmental Protection Law of the People's Republic of China", the "Water Pollution Prevention and Control Law of the People's Republic of China" and the "Marine Environmental Protection Law of the People's Republic of China" to protect the ecological environment, Promote the improvement of water environment quality, guide and standardize the inspection of sewage outlets entering rivers (sea) in various places, and formulate this standard. This standard specifies the technical requirements for sewage discharge outlet level inspection into rivers (sea), as well as quality control and certification. Preliminary preparation, first-level inspection, second-level inspection, third-level and related requirements. People 5 | 4 Star Environmental Application Center, Tsinghua University, All Ti HJ1232-2021 Three-level inspection technical guide for sewage outlets entering the river (sea) Liu period preparation, technical requirements for first-level inspection, second-level inspection and third-level inspection, And quality control cost standards apply to rivers (sea)