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® HAZARD TYPE: ❑Follow internal guidance for mitigating airborne respiratory illness transmission(as applicable).
<br /> -protective measures(see also Section D.1.b.,"Biological Hazards
<br /> El Contagious respiratory illness 0 Implement vector ")
<br /> ®Vector-borne infectious risk ©Use"Standard/Universal Precautions"as applicable to mitigate exposures to infectious/pathogenic hazards.
<br /> El Wastewater,sewer,landfill M Low hazard-use basic hygiene:onsite hand washing(soap&water preferred)and protective apparel/PPE.
<br /> ❑Animal/human waste I ElMed/high hazard-added PPE(gloves/barriers/respirator/dust mask),decon,remediation,as appropriate.
<br /> ❑For bloodborne human pathogens follow Bloodborne Pathogen Program and Standard/Universal Precautions.
<br /> ❑Wildlife contact,infectious risk ❑Contact HR Dept.for project-specific immunization e. tetanus di htheria ertussis Tda hepatitis A B.
<br /> ❑Mold,fungi,valley fever p p I p ( g / p /p p) p / )
<br /> ❑Implement remedial actions to mitigate infectious hazard source(remove syringes,clean up unsanitary
<br /> ❑Bloodborne pathogens waste/debris,decon/disinfect surfaces,etc.)as appropriate for the scope/scale of work.
<br /> ❑Discarded syringes
<br /> ❑Medical waste HSE Program Documents:HSE SOP-240:Mitigating Respiratory Illness Transmission in the Workplace,
<br /> M Other(describe above) HSE SOP-408:Bitina/StinginaArthropods and Poisonous Plants, HSE SOP-612a:Bloodborne Pathogens L S-only)
<br /> D.14. COMMERCIAL CHEMICAL PRODUCTS(per HAZCOM or WHMIS) ❑ Applicable ® Not Applicable, Not Anticipated
<br /> D.15. SITE CONTAMINANTS, CHEMICAL WASTES L Applicable ❑ Not Applicable, Not Anticipated
<br /> Site-Specific Notes&Clarifications:Site groundwater COCs are chloroform and carbon tetrachloride.The most recent(2016)sampling results at MW-6 was
<br /> non-detect for both COCs.Based on 2024-2025 groundwater monitoring results,the plume is located approximately 1,000 to 2,000 ft down-gradient(northeast)from
<br /> M W-6.
<br /> CHECK ALL THAT APPLY. Provide site-specific notes/clarifications above.
<br /> .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
<br /> ®Soil/groundwater contaminants(historical release) ❑Explosive dust ❑Potential for flammable gas(methane)
<br /> ❑Recent release,known high concentrations ❑Oxygen deficiency ❑Corrosive,acids/caustics,strong irritants
<br /> ❑Former chemical disposal site,landfill M Chlorinated volatile organic compounds(VOCs) ❑Asbestos abatement work
<br /> ❑Urban fill,residual contaminants ❑BTEX,petroleum derived VOCs ❑Pesticides,herbicides,fungicides
<br /> ❑Containerized waste(drums,process equipment) ❑Fuel oils,petroleum,waste oil,lubricants ❑Sensitizers
<br /> ❑Buried drums(known or potential) ❑Metals,metal compounds,metal dusts ❑Radioactive contaminants
<br /> ❑Large containers,potential for spills € ❑Elemental mercury s ❑Controlled substances,drugs
<br /> ❑Contaminated building surfaces ❑Polyaromatic hydrocarbons(PAHs) ❑Wildfire smoke,see THA Addendum
<br /> ❑Unexploded ordnance ❑Potential for flammable vapors ❑Other-describe above
<br /> ........ ......... ......... ......... ......... ......... ..........................................................
<br /> NOTE:For sites with one or more"high-risk contaminants"(below)designated/recognized as a contaminant of concern,or exceeding an environmental reporting
<br /> threshold,or representing a potential exceedance of an action level or exposure limit,the THA must be reviewed by the HSE Dept.before initiating the work:
<br /> ❑Asbestos ❑Chromium VI hexavalent chromium ❑Lead
<br /> ❑Arsenic/arsenic compounds ❑Crystalline Silica(airborne) ❑Methylene chloride
<br /> ❑Benzene ❑Dioxins ❑Polychlorinated biphenyls(PCBs)
<br /> ❑Beryllium ❑Mercury ❑Vinyl chloride
<br /> ❑Cadmium ❑Hydrogen Cyanide(HCN)
<br /> FOR WORK CONSISTING OF CLEANUP OPERATIONS,CORRECTIVE ACTIONS,PRELIMINARY INVESTIGATIONS at an"UNCONTROLLED HAZ.WASTE SITE"
<br /> (per HAZWOPER,29 CFR 1910.120 or equivalent),delineate procedures in"Site-Specific Notes and Clarifications"(or attachments)addressing the
<br /> following,as applicable to the work:
<br /> - Workers attend pre-work orientation on hazards,risks,onsite safety measures,emergency contingencies.
<br /> - Implement site control plan-delineate Exclusion Zone(s),Contaminant Reduction Zone(s),Support Zone(aka EZ,CRZ,SZ).
<br /> - Include site map/figure depicting work locations and other relevant site-specific information.
<br /> - Site workers in EZ or CRZ shall have 40-hour HAZWOPER training,current 8-hour refresher,3 days supervised field experience.
<br /> - Site supervisor(s)shall have 8-hour Supervisor training.
<br /> - Site workers in EZ or CRZ shall participate in medical monitoring program,as applicable.
<br /> - Implement site-specific procedures for worker protection via engineering controls,work practices,personal protective equipment(PPE),air
<br /> monitoring,decontamination procedures,spill containment,emergency preparedness and response.
<br /> - Conduct air monitoring,as appropriate;see Part E,"Air Monitoring,Worker Exposure Monitoring."
<br /> - PPE program:Specify Levels of Protection and specific PPE to be used for applicable tasks;
<br /> o Level D:No respirator,no chemical protective clothing,standard work clothes,basic PPE;(COVID-19 face covers allowed)
<br /> o Modified Level D:No respirator,chemical protective clothing as appropriate;(COVID-19 face covers allowed)
<br /> o Level C:Air-purifying respirator,chemical protective clothing as appropriate;consult with Corp.HSE Dept.required.
<br /> o Level B:Air-supplied respirator,chemical protective clothing/suit as appropriate;consult with Corp.HSE Dept.required.
<br /> o Level A:Fully encapsulating suit,self-contained breathing apparatus(SCBA);Level A prohibited for Geosyntec personnel.
<br /> ® FOR SITE WITH CHEMICAL CONTAMINANTS OR WASTE BUT NOT REGULATED BY HAZWOPER
<br /> - Workers shall be knowledgeable/aware of chemical hazards thru safety training/orientation and availability of hazard information.
<br /> - Implement controls to minimize worker exposure through engineering controls,work practices,PPE,decon,as appropriate.
<br /> - Evaluate worker exposure via air monitoring/sampling,as applicable;see Part E,"Air Monitoring,Worker Exposure Monitoring."
<br /> ® STORAGE/TRANSPORT OF IDW* ®Describe site-specific procedures above for spill containment,container handling,as applicable.
<br /> Spill/Release Risk: 1 ®For liquids,provide secondary containment during storage.
<br /> Project/Task Name:Well Decommissioning/Former Olin Chlor Alkali Site,Tracy
<br /> Geosyntec° THA Date:04/28/2025 Page 9
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