Tender For to carry out 'work area monitoring' at 12 different locations of clw locoshop [as per statutory obligation, following the provisions of the factories acts, 1948 and the west bengal factories rules, 1958] for assessment of:(i)air contamination, like concentration of carbon monoxide, sulphur dioxide, nitrogen dioxide etc.,(ii)dust (spm & rspm), (iii)noise level and (iv)illumination level.