TranSystems Corporation - LGM Construction

7.2 CORROSIVITY
Based on the corrosivity testing performed by JDH Corrosion Consultants, Inc. of
Walnut Creek, moderately high levels of water-soluble sulfates were found that
suggests a good quality dense concrete be used for the concrete slabs at this site.
The soils are also considered to be “moderately corrosive” to ductile/cast iron, steel, and
dielectric coated steel based on the resistivity measurements. All buried iron, steel, cast
iron, ductile iron, galvanized steel and dielectric coated steel or iron should be properly
protected against corrosion depending on the critical nature of the structure. All buried
metallic pressure piping such as ductile iron firewater pipelines should also be protected
against corrosion. Appendix C presents a laboratory soil corrosivity test summary and
recommended mitigation measures provided by JDH Corrosion Consultants.
The above corrosion related laboratory test results and recommendations were based
on one soil sample from boring KB-1 at 2 feet bgs.
94240/1(OAK8R061)/es Page 16 of 29 June 13, 2008
© 2008 Kleinfelder