Aggregate, Soils, & Flexible Base Committee

2025 Committee Chair: David Johnson, Colorado Materials Ltd.

2025 Assigned BOD: Jose Mata, CSA Materials Inc.

Assigned TXAPA Staff: Richard Izzo

• Evaluate aggregate, soils, and base materials
• Develops and coordinates presentations on aggregate, soils, and base
• Assists in re-writes, test procedures, and specification changes
• Meets at the call of the chairman