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Site CorYOSivity Evaluation <br />Busch Panel <br />DISCUSSION <br />Reinforced Concrete Foundations <br />Due to the relatively low levels of water-soluble sulfates and <br />special requirements for sulfate or chloride resistant concrete <br />site. However, the minimum depth of cover for the reinforcing <br />in UBC. <br />Underground Metallic Pipelines <br />chlorides in these soils, no <br />mix are warranted for this <br />steel should be as specified <br />The soils at the project site are considered to be "corrosive" to "moderately corrosive" to <br />ductile/cast iron, steel and dielectric coated steel based on the saturated resistivity <br />measurements. Therefore, special requirements for corrosion control are required for buried <br />metallic utilities at this site depending upon the critical nature of the piping. Pressure piping <br />systems such as domestic and fire water should be provided with appropriate coating systems <br />and cathodic protection, where warranted. In addition, all underground pipelines should be <br />electrically isolated from above grade structures, reinforced concrete structures and copper <br />lines in order to avoid potential galvanic corrosion problems. <br />LIMITATIONS <br />The conclusions and recommendations contained in this report are based on the information <br />and assumptions referenced herein. All services provided herein were performed by persons <br />who are experienced and skilled in providing these types of services and in accordance with the <br />standards of workmanship in this profession. No other warrantees or guarantees, expressed or <br />implied, is provided. <br />We thank you form the opportunity to be of service to Cornerstone Earth Group on this <br />project and trust that you find the enclosed information satisfactory. If you have any questions <br />or if we can be of any additional assistance, please feel free to contact us at (925) 927-6630. <br />Respectfully submitted, <br />f Darby ~Eouia,~',. jr. (` - (' No. CR 1055 ' <br />J. Darby Howard, Jr., P.E. <br />JDH Corrosion Consultants, Inc. <br />Principal <br />Cc: File 28011 <br /> <br />JDH Corrosion Consultants, Inc. <br />