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ACTIVITY HAZARDS ANALYSIS <br /> Overall Risk Assessment Code(RAC) <br /> (Use highest code) I M <br /> Date: 6 November 2009 Project: Soil Excavation <br /> Risk Assessment Code Matrix <br /> Activity: AHA-02:Underground Utility Clearance E=Extremely High Risk Probability <br /> H=High Risk <br /> M=Moderate Risk Frequent Likely Occasional Seldom Unlikely <br /> Activity Location: California National Guard Armory,Lodi,CA L=Low Risk <br /> S Catastrophic E E H H M <br /> e <br /> Prepared By: Lik-See Chunge Critical E H H M L <br /> Marginal H M M L L <br /> r Negligible M L L L L <br /> Add Identified Hazards <br /> JOB STEPS HAZARDS ACTIONS TO ELIMINATE OR MINIMIZE HAZARDS RAC <br /> 1.Call Underground Service Alert(USA)at(800) •Ensure a USA'tic et number is receive even i there are no potentia <br /> 642-2444 bellmarked. <br /> all could cause major utilities to not conflicts. L <br /> 2.Obtain as-built drawings and review site for obvious •Mark obvious visible utilities such as manholes,pipes protruding from <br /> I <br /> of utilities. ground,other fixtures at the surface of the ground. <br /> Could fail to identify utilities that are difficult to <br /> X <br /> detect by instrumentation. L <br /> Use the resulting location markings to update the Layout Plan <br /> NWW Form 385-1 (Revised)April 2008 <br />