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Revised: 01/31/2023 1 <br />ACTIVITY HAZARD ANALYSIS <br />Date Prepared:01 / 31 / 2023 <br />AHA No.:20180523-001 <br />Project Name:Various <br />Activity/Work Task:Trenching and Excavation <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 PPE Required: Hardhat, Safety glasses, Steel <br />toes, High Visibility Vest, Long Sleeves, Cut Resistant <br />Gloves) <br />Supervisor:TBD <br />Reviewed By:Health and Safety Department <br />Overall Risk Assessment Code (RAC): H <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 <br />clearance for 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 <br />communication lines <br />1. Physically verify the location and depth of existing utilities prior to starting <br />excavation through geophysical and utility survey. <br />2. Call National One Call 48 hours prior to job start - dial 811. By law, responses <br />from the utility owner are required before commencing the subsurface activities. <br />All utility companies in the 811 should be contacted prior to commencing <br />subsurface activities to determine if they have utilities in the area if they do not <br />provide a response to the 811 call. Review as-built drawings. Protect all existing <br />utilities during excavation. Perform excavation withing 4 feet of existing utilities by <br />hand and/or non-aggressive methods. Protect all underground utilities as soil is <br />removed <br />L <br />2. Set up exclusion zone(s), Work <br />areas, 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. Set up and delineate exclusion zones using traffic control devices such as <br />barricades, caution tape, snow fence, delineators and signage. <br />2. Clear walkways work areas of equipment, tools, vegetation, excavated material <br />and debris. Mark, identify, or barricade other obstructions. Maintain 3 point <br />contact when ascending/descending ladders/mounting/dismounting from heavy <br />equipment. Halt exterior work in high winds, lightning, severe weather. <br />3. Wear reflective hi-vis vests worn when exposed to vehicular traffic. Isolate <br />equipment swings areas. Make eye contact with operators before approaching <br />equipment. Understand and review hand signals. <br />4.Wear face shield, goggles when operating powered clearing/grubbing <br />equipment. <br />5. Wear cut resistant work gloves when the possibility of lacerations or other injury <br />may be caused by sharp edges or objects. Maintain all hand and power tools in a <br />safe condition. Keep guards in place during use. Close doors, windows on heavy <br />equipment to prevent injuries from tree branches and other vegetation. <br />6. Employ proper lifting techniques- Lift with your legs not your back, keep a firm <br />grip, do not over-extend your arms/body when holding heavy objects, Do not lift <br />more than 50lbs. without using the buddy system or mechaincial means. <br />M <br />NC-25-1137 Tiwana & Sons <br />1210 East Hammer Lane, Stockton, CA 95210