A Cabinet press release confirmed his appointment for a second term.
The release said Crawley brings to the Ministry a wealth of 25 years of experience in the environment sector.
He has worked on many large projects as a Consultant for national, regional and international projects on the environment.
The 53-year old holds a Master on Environmental Law and a Postgraduate in the fields of Climate Change, Meteorology, Oceanography, Geographical Information System (G.I.S) and Remote Sensing.