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"NORMAL OPERATION"OF ❑Follow"normal operation"requirements: ELECTRICAL EQUIPMENT CONNECTED • All electrical enclosures/guards/covers must be in place/closed/secured. TO AC OR DC POWER SOURCE>50 V: • Electrical equipment maintained per codes/standards/manufacturer's recommendations. Electrically powered tools,equipment, • Ensure no indication of damage or impending failure(heat,smoke,buzzing,odors,arcing,melting). machinery,extension cords,portable • Operate equipment in accordance with manufacturer's standard operating procedures. generators,working near electrical ❑Follow general electrical safety work practices to minimize shock hazard and secondary hazards: equipment. • Control water-related/wet-location hazards in a manner appropriate for the job tasks/equipment/tool. I Never touch electrical equipment if you are wet or standing/kneeling in water or on wet surfaces. Hazards: • Use extension cords/power cords properly,rated for use conditions and current draw,prevent damage. -Electrical shock Inspect tool/equipment/extension cords/power cords before each use;remove from use if damaged. -Fire Hazard I • Use GFCI-protected outlet or portable GFCI in wet/moist locations,outdoors,basements,concrete floors. -Secondary hazards(falls,other • Do not enter any space delineated by an electrical approach boundary. injuries). HANDS-ON DIAGNOSTICS/REPAIR ON i ❑Implement electrical safe work practices pertaining to: CIRCUIT(S)CONNECTED TO POWER • Workers trained appropriately for the task. SOURCE<50 V: • Shock prevention measures. ❑AC ❑DC I • Eye/skin protection for arcing hazards. ❑Battery and/or solar power I • Protection from secondary hazards. ❑Capacitor(s) ❑Stray voltage from soil electrodes El project-specific written"Electrical Safety Program'addressing(at a minimum): ❑ WORK WITHIN"APPROACH BOUNDARY-OF EXPOSED, • Workers trained/designated as"Qualified Electrical Workers"per NFPA 70E(US)/CSA Z462(CAN) ENERGIZED(OR POTENTIALLY • Assess risks of electrical shock(voltage levels and sources),arc flash hazard and secondary hazards. ENERGIZED)CONDUCTORS AND/OR • Affix electrical hazard warning label to electrical enclosure(s)to be accessed. CIRCUIT PARTS CONNECTED TO • Physically delineate arc flash-or limited approach boundary,whichever is farthest from hazard source. POWER SOURCE 50-600 V*: • Only"qualified"workers allowed within approach boundaries;prevent entry by non-qualified personnel. ❑AC ❑DC ❑3-phase Establish electrically safe working condition;work on live circuits prohibited(except for diagnostic testing). ❑Battery and/or solar power • Use PPE for shock/arc flash protection,as required. ❑Capacitor(s) i Use other safe procedures/equipment required for the task,such as lockout/tagout. ❑Induced voltage ❑Stray voltage>50V from soil electrodes *Working on>600 V not permitted for Geosyntec personnel ❑ LOCKOUT/TAGOUT(LO/TO)OF ElPrepare site-specific written LO/TO program,and equipment-specific written LO/TO procedures(as ELECTRICAL ENERGY To prevent applicable);implement control procedures for hazardous energy sources,provide locks/tags,train workers, unplanned start-up or release of designate"authorized"personnel,notify"affected"personnel. energy when equipment is under maintenance/repair. WARNING! Confirmed or possible ❑Follow safe work practices per D.11."Utility-Related Hazards." close proximity to OVERHEAD ELECTRICAL UTILITY LINES. HSE Program Documents:HSE SOP-434a:Overhead and Underground Utility Hazards(US-only), HSE SOP-452a:Lock-out/Tag-out(North America-only) HSE SOP-454a:General Electrical Safety(US-only) D.11. UTILITY-RELATED HAZARDS ® Applicable ❑ Not Applicable, Not Anticipated Site-Specific Notes&Clarifications:Both Geosyntec and the drilling subcontractor will submit an 811 ticket for the job.Kinder Morgan is expected to contact Geosyntec due to a suspected gas line in the vicinity. ❑ OVERHEAD,ABOVE-GROUND ElDo not cross approach boundaries with personnel or equipment;employ other appropriate precautions for UTILITIES the conditions(specify above). ❑Use additional controls,as applicable:shielding,flagging,observer/monitor,or, ❑Arrange for power company/utility owner to de-energize power line. ® UNDERGROUND UTILITIES ®Confirm appropriate underground utility clearance procedures have been completed prior to ground penetrations,and employ other utility clearance/locator practices,as appropriate for conditions. ®Hand digging/augering or vacuum post-holing within 3'of utility locations or other high-risk condition. HSE Program Documents:HSE SOP-434a:Overhead and Underground Utility Hazards(US-only) D.12. CONFINED/ENCLOSED SPACES(Including Hazardous Indoor Spaces) ❑Applicable I�IC Not Applicable, Not Anticipated D.13. INFECTIOUS/PATHOGENIC BIOHAZARDS ® Applicable — Not Applicable, Not Anticipated Site-Specific Notes&Clarifications:Biting/stinging insects ® HAZARD TYPE: ❑Follow internal guidance for mitigating airborne respiratory illness transmission(as applicable). Project/Task Name:Well Decommissioning/Former Olin Chlor Alkali Site,Tracy Geosyntec THA Date:5/12/2026 Page 10 consultants