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NATIONAL EXHIBIT A /� National Corrosion �Ir01i11®1®N www.notiona!-corrosion.com Project Approach Task 1— Review and Planning Project Management - National Corrosion shall conduct management activities to ensure tasks stay on schedule and budget. Documentation may be recorded as required as National Corrosion attends meetings with staff such as kickoff, research, report review, and as needed project issues. Review — National Corrosion shall work with the City of Santa Ana to obtain record drawings and historical data of all assets subject to corrosion. Planning —A mutually agreed upon list of sites will be created based on priority and efficiency to conduct field testing and corrosion assessment. List of locations and appurtenances may be based on recommendations, importance, or severity level after review of the plans and meeting with the city. Task 2 —Field Survey and Testing A NACE certified corrosion engineer will conduct a comprehensive survey of all available existing assets including pipelines, fittings/appurtenances, pump stations, reservoirs, and vaults. Work conducted will include the following data collection and verification: • Visual inspection of all accessible locations • Obtain and measure pipe -to -soil potential measurements to verify active corrosion as well as operational condition of existing cathodic protection systems. • Measure soil resistivity at locations where soil is suspected as a future risk. • Test Reservoirs: o Record current outputs of anodes and test permanent reference cell o Insert portable reference cell and measure cathodic protection levels o Test external piping for corrosion o Assess tank chime for corrosion o Create specifications and procedures for repair for corrosion issues • Establish atmospheric assessment program: o Create an assessment standard which may Include the following criteria: ■ Location and date of inspection • Description, pipe lengths, diameters, and quantities • Access and safety issues • Percent coating damage • Percent bare pipe exposed • Written Coating Assessment, Overall corrosion assessment • Mechanical damage assessment • Pipe support assessment • Corrosion potentials of supports and pipeline potentials • Upstream and downstream soil -to -air interface descriptions • Dry film thickness (Coating) at locations 12, 3, 6, and 9 o clock • UT (Ultrasonic) measurements at locations 12, 3, 6, and 9 o clock