Located at 139 Mountain Avenue, Springfield, NJ. Contractor- Rochelle Contracting. Owner- Springfield Public Schools. Block Supplier: Unilock. Designed three mechanically stabilized earth retention walls utilizing the heavy duty (450 lbs) Unilock SienaStone 500 blocks totaling nearly 5,000 SF. Improved school site for the installation of new athletic fields including a football field, baseball field, and multiple tennis courts.