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besides site safer:y a---1C-ivities) . Also include the site and office telephone numbers cf key contractor/responsible party and agency personnel. 3. Job Hazard Analysis/Site Characterization and Analysis [PR (b) (1) (iv) (2) Gra (c) ] This section provides information on potential hazards to workers at the site. This information can be obtained from previous investigations of the site (i.e. , PA/SI, RI/FS) . If sufficient data are not available, a preliminary evaluation as described in (c) "Site Characterization and Analysis" (in both the IFR and PR) will be performed. Describe potential chemical hazards based on contaminants present or expected, and a concise description (narrative) of the primary health risks associated with each; this should include chemical, physical and toxicological characteristics of the contaminants, such as vapor pressure, odor threshold, expected potential routes of entry, physical state expected (gas, vapor, aerosol, etc.) , target organs, acute and chronic effects, etc. This narrative may be augmented by a quick- reference d art of chemical hazards. Include PELs/TLUs/REIb for each contaminant (as applicable) . Completely describe the physical hazards associated with each site activity (i.e. , trenching, drilling, excavating, sampling) and the steps to be taken to minimize these hazards. If personnel will be required to enter a confined space at the site, provide a complete description of the procedures to be used for the confined space work. Provide anticipated weather conditions, including historic mean temperatures and relative humidities. If heat stress potential is indicated (ambient temp>70F) , discuss its symptoms and the attendant hazards (monitoring and control of heat stress is addressed in section 5) . In colder regions, give consideration to cold stress potential. Where trenching or drilling will be conducted, ensure that Underground Service Ale:` (USk) is contacted for guidance regarding underground utilities. Article 6 of the Construction Safety orders (in Title 8, California code of Regulations) contains specific regulatory requirements for trenching operations, as does 29 CFR 1926. Some large/prolanged/cor=lex site mitigation projects will require a more detailed j % :azz� analysis for each job classification on the project [IFR (i) (2) (-) (E) ] ; however, most RI/FS projects will not need an extensive analysis. 4. Job Hazard Si m*a- P=.ride a s=a=j- cf the potential risks arising from the work being performed at the site. This will include imact on the workers, the nearby/surrounding community, and the environment. This section is - 7 -