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WATER HAZARDS ; General water-safety measures for all work near water:
<br /> Work/travel in watercraft or on equipment over j ❑Wear regulatory-approved personal flotation device(PFD)where drowning hazard is present.
<br /> water or over coal ash impoundment/pond: i ❑Bring emergency rescue and/or signaling equipment(ring buoy and rope,reaching device,flares)
<br /> ❑Workboat,barge,over-water structures I ❑For fall protection over water,see DA."Fall Hazards."
<br /> ❑Water transportation 3 ❑For electrical hazards associated with water/wet locations,see D.10."Electrical Work Tasks"
<br /> ❑Hazardous currents(river,tidal/riptide) Boating-specific:
<br /> ❑Towing,trailer,roadway ❑Use fuel safety practices,fire extinguisher present in boat.
<br /> ❑Other—describe above ❑Develop/follow float plan,monitor weather,navigate/communicate as planned.
<br /> ❑Confirm navigation/communication equipment operable before heading onto water.
<br /> Walking/wading into water,on shoreline, ❑For work over very cold water,have immersion survival suit available.
<br /> riverbank,dock,bulkhead,abutment,coal ash: ❑For tidal,flash flood,dam release hazards,plan/locate work accordingly.
<br /> ❑Wading/walking into/near water,wetland ❑For towing a boat trailer,see D.Z."Special Driving/Traffic/Transportation Hazards."
<br /> i ❑Hazardous tidal zone or surf i Wading in water or walking along shore/bank or on dock/pier/abutment:
<br /> ❑Water release,flash flood ❑For ice/slip hazards,wear ice creepers,sand work area,use tether,other appropriate measures.
<br /> ❑Coal ash pond,quicksand,soft ground ❑For work on ice over water,verify safe thickness,have ring buoy&rope available
<br /> ❑Open culvert,arroyo,drainage/irrigation ditch i ❑For unsure/slippery footing in water,use wading staff,high-traction soles on waders.
<br /> ❑Ice hazard on or near waterbody ❑Have lifesaving skiff/boat available in circumstances where other rescue means are inadequate.
<br /> Diving ❑Monitor hazardous tides,weather for flash floods,know water release schedule.
<br /> i ❑Scientific SCUBA diving For soft ground,ash ponds,quicksand:
<br /> Hazards(as applicable): ❑Wear personal flotation device(PFD),as appropriate for the work task and work environment.
<br /> Drowning,cold immersion ElBring emergency rescue equipment(ring buoy and rope,reaching device)
<br /> Boating collision,navigation,fog,darkness i ❑If walking on ash/quicksand,provide stable walking/working surface(4'x8'plywood,or similar)
<br /> Fire/fuel hazards : For diving:
<br /> Entrapment(mud/silt/coal ash/quicksand) ❑Develop a diving safety plan approved by Geosyntec's diving coordinator
<br /> j -Slip/fall hazards—ice,mud,silt,wet surfaces i For chemical contaminant and/or biological/infectious hazard:
<br /> Weather,heat/cold stress ❑See Section(s)D.1.b.,"Biological Hazards,D.13.,"Infectious/Allergenic Biohazards,"
<br /> Equipment failure,hypoxia D.14.,"Commercial Chemical Products,"and/or D.15.,"Site Contaminants,Chemical Wastes"
<br /> Chemical contaminant and/or biological hazard
<br /> HSE Program Documents:HSE SOP-407:Working On/Near Water and Ice,HSE SOP-630:Water Transportation Safety,
<br /> HSE MAN-005:Underwater Diving Operations Manual
<br /> DA FALL HAZARDS(Falls to Lower Levels) ❑Applicable ® Not Applicable,Not Anticipated
<br /> Site-Specific Notes&Clarifications:
<br /> WORKING AT HEIGHTS(GENERAL) Fall protection"trigger heights":
<br /> Hazards: Built environment—US&CAN:4 ft.(1.2 m.);Construction:US:6 ft.,10 ft.for scaffolds CAN:10 ft.(3 m)
<br /> Injury from falls onto lower surface Protect from primary(fall)hazards: Protect from secondary(collateral)hazards:
<br /> or falls into hazardous equipment, ❑Restrict access to hazard(barriers,tape,sign) ❑Protect site ground personnel from falling objects
<br /> chemicals,water ' ❑Ensure safe access to height(ladder,stair,lift) (restrict access,toe-boards,tether tools)
<br /> j -Overhead utilities/obstructions i ❑Ensure guardrails/stair-rails/handrails present ❑Install caps on protruding rebar and similar
<br /> Impalement hazard(such as from i ❑Ensure covers in place over holes ❑Working over water;see D.3,"Water Hazards"
<br /> falling onto unprotected rebar and = ❑Use designated"watch person/monitor" ElWorking over hazardous machinery/equipment;see
<br /> similar surface projections) I ❑Use tether or positioning device D.6,"Power-Tools/Powered Equipment"
<br /> -Hazard posed to ground personnel ❑Use personal fall apparatus(PFA) ❑Overhead electrical;See D.11."Utility-Related Hazards"
<br /> j from falling tools,equipment, ; ❑Use fall protection net ❑Working over chemical hazards;See D.14 and/or DAS
<br /> materials I for chemical and/or contaminant hazards.
<br /> HSE Program Documents:HSE SOP-405:Walking-Working Surfaces Protection,HSESOP-415c:Fall Protection(North America-only),
<br /> HSE SOP-434a:Overhead and Underground Utility Hazards(US-only)
<br /> LADDER/STAIRS i ❑Follow safe work practices:
<br /> ❑ Extension/straight ladders I • Use ladders according to safe practices and manufacturer's instructions.
<br /> i ❑ Stepladders • Maintain 3 points of contact at all times on ladder;keep center of gravity within side rails.
<br /> ❑ Fixed/installed ladders • Do not use metal(conductive)ladder near electrical hazard.
<br /> i ❑ Portable/mobile stairs • Extension/straight ladders shall be properly footed,secured,angled,extend above upper work surface.
<br /> ❑ Job-made or scaffold stairs • Stepladders are set on level ground or properly shimmed,spreaders locked;do not climb/stand on top
<br /> step,top cap,or rear non-climbing side;use step ladder of sufficient reach height for work.
<br /> j Hazards: Equip stairs with stair handrails where more than 4 steps,and for stairway height of 4'or more.
<br /> See general fall hazards,above. i . Ensure portable stairs are stable,plumb,and of sufficient reach height for task.
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<br /> i HSE Program Documents: HSE SOP-415a:Fall Protection(North Americo-only);
<br /> HSE SOP-638:Ladders and Stairways
<br /> D Project/Task Name:TR0712/Replacement of Monitoring Wells THA ver.4.0
<br /> Geosyntec THA Date:6/26/2025 Page 8
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