Testing Services for Agriculture, Construction and Environmental Agricultural testing – soil and plant testing for nutrients necessary to grow crops. Testing procedures according to acceptable published methods. Construction testing – Chemical testing of soil for construction and landscape purposes. Chemical testing methods according to ASTM and department of transportation requirements. Environmental testing – analysis on EPA regulated solid waste, drinking water, sludge, contaminated soils etc. Closely adhere to ADEQ requirements and tested according to ADHS methods.