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            This Certificate is awarded to
          
            
              
            
            
            
            
              
            
            
            
            
            
              
            
            
            
            
            
            
            
            David J. Peterson, P.E., IWI Peterson
          
            
              
            
            
            
            
              
            
            
            
            
            
              
            
            
            
            
            
            
            
            For successfully completing the course
          
            
              
            
            
            
            
              
            
            
            
            
            
              
            
            
            
            
            
            
            
            CONSTRUCTION 4621: Essential Waterproofing Workshop California Coastal Classes
          
            
              
            
            
            
            
              
            
            
            
            
            
            
              
              
            
            
            
            
            
            
            
            September 20, 2022
          
        
         
       
      
        David J. Peterson, P.E., IWI Peterson
        Certified: September 20, 2022