District Materials Office staff

• Ensure materials and materials testing procedures are in compliance.
• Conduct sampling and testing of a variety of materials.
• Provide fabrication inspection of prestressed, precast and foundry elements.
• Perform correlations testing of pavement smoothness.

Materials Staff
Name	Position	Phone Number
John Hart P.E.	district materials engineer	515-239-1488
Jeff De Vries	transportation engineer intern	515-239-1926
Cheryl Barton	materials technician 5	515-239-1756