HRF Materials Testing Laboratory is nationally accredited by A2LA with Certificate Number 5489.01 and registered with the New York City Department of Buildings to provide field sampling and testing for concrete and aggregates. The laboratory operates under the supervision of a licensed professional engineer in accordance with applicable ASTM, CCRL, AMRL, ACI, ISO and AASHTO guidelines, standards and specification, including the requirements of ASTM C1077 which is standard practice for agencies testing concrete and concrete aggregates for the use in construction and criteria for testing agency evaluation. HRF also meets ASTM E329 which is standard specification for agencies engaged in construction inspection, testing or special inspection.