Since 1994 Tierra has been involved in the FDOT District VII Materials Testing contract.  Until June 2010, Tierra was assisting Mactec to verify and inspect all phases of construction of pre-stressed piles and beams for various projects throughout Florida.  The project set-up and maintaining current verification data files for up to thirty (30) on-going FDOT projects in various stages of pre-stress construction.  The contract also consisted of verification laboratory testing including compression testing of concrete and soil tests such as standard and modified Proctor tests, LBR tests, chemical tests to determine soil corrosiveness, organic content, liquid and plastic limits, grain size analysis and soil classification.  Date entry into the LIMS system is required.  In June 2010, Tierra was awarded a five (5) year contract as the prime consultant for FDOT District VII materials testing services.  Our duties as the prime consultant remain as stated above plus additional duties involving administration of the contract and management of sub-consultants.