We were appointed by M/s Hot Impact Engineering and Construction L.L.C. to test and estimate the performance of their installations. General testing methods employ Impedance tubes or reverberation chambers to estimate the NRC values of a typical type of installation. As per the request of the contractors and the unique nature of this project (in-situ, post installation of machines), we tested as per a method mentioned in ISO 16283-1:2014 using ISO 3382 to estimate the existing absorption area in the plant room. We were involved only for third-party testing.