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Revised: 02/02/2023 1 <br />ACTIVITY HAZARD ANALYSIS <br />Date Prepared:02 / 02 / 2023 <br />AHA No.:20211019-002 <br />Project Name:Various <br />Activity/Work Task:Excavation and Trenching 4' in Depth or Greater <br />Department/Division/Section:All <br />Location(s):Various <br />Developed By:Terry Dussault <br />Start Date:02 / 01 / 2023 <br />Duration: <br />(Level D or C PPE Required: Hardhat, Safety glasses, <br />Steel toes, High Visibility Vest, Long Sleeves, Cut <br />Resistant Gloves) <br />Supervisor:TBD <br />Reviewed By:Health and Safety Department <br />Overall Risk Assessment Code (RAC): M <br />RISK ASSESSMENT CODE MATRIX <br />E=EXTREMELY HIGH <br />RISK <br />H=HIGH RISK <br />M=MODERATE RISK <br />L=LOW RISK <br />PROBABILITY <br />FREQUENT LIKELY OCCASIONAL SELDOM UNLIKELY <br />S <br />E <br />V <br />E <br />R <br />I <br />T <br />Y <br />CATASTROPHIC E E H H M <br />CRITICAL E H H M L <br />MARGINAL H M M L L <br />NEGLIGIBLE M L L L L <br />Job Steps Hazards Actions to Eliminate or Minimize Hazards RAC <br />1. Inspect area for utilities and clearance for <br />heavy equipment <br />- Contact with underground utilities could cause injury to <br />worker and damage to property or equipment. <br />- Verify that there are no overhead power or communication <br />lines <br />1. Physically verify the location and depth of existing utilities prior to starting excavation <br />using GPR equipment, subcontractor services and marking obvious features (i.e. sewer <br />clean outs, man hole covers, water lines, etc). <br />2. Call or email Dig Alert 48 at least hours prior to job start - dial 811. By law, responses <br />from the utility owner are required before commencing the subsurface activities. Review as- <br />built drawings and/or historical maps. Protect all existing utilities during excavation. Han <br />dig or air knife within 4 feet of known utilities or use other passive methods. Protect all <br />underground utilities as soil is removed. <br />L <br />2. Set up exclusion zone(s), Work areas, <br />path of travel <br />- Injury or exposure to public or other onsite personnel <br />- Slips/Trips/Falls <br />- Struck by Equipment <br />- Eye Injuries <br />- Sharp objects <br />- Handling heavy objects <br />1. Delineate exclusion zones using traffic control devices such as barricades, caution tape, <br />snow fence, delineators and signage. <br />2. Clear walkways work areas of equipment, tools, vegetation, excavated material and <br />debris. Mark, identify, or barricade other obstructions. Maintain 3 point contact when <br />ascending/descending ladders/mounting/dismounting from heavy equipment. <br />3. Wear reflective traffic vests near traffic. Isolate equipment swings areas. Make eye <br />contact with operators before approaching equipment. Understand and review hand <br />signals. <br />4. Wear safety glasses at all times. <br />5. Wear cut resistant work gloves and long sleeves to reduce the possibility of lacerations or <br />other from sharp edges or objects. <br />6. Lift with your legs not your back, keep a firm grip, do not over-extend your arms/body <br />when holding heavy objects, Do not lift more than 50lbs. without using the buddy system or <br />mechanical means. <br />M <br />3. Manual Digging to Expose Utilities - Damage to lines (and associated Physical Hazards or <br />property damage) <br />- Injury or vehicle damage from falling into holes <br />- Slips/Trips/Falls <br />1. Use the right shovel for the type of digging being performed. <br />2. Barricade/cover trenches until job is complete. Avoid twisting back during post holing. <br />3. Keep work areas clear of equipment, tools, vegetation, excavated material and debris. <br />Mark, identify, or barricade other obstructions. <br />L <br />NC-25-1137 Tiwana & Sons <br />1210 East Hammer Lane, Stockton, CA 95210