ยง  1383. Powers of municipalities.  Any municipality or municipalities
  acting jointly may:
1. apply to and contract with the commissioner for state aid  pursuant
  to this title;
2.  enter  into  contracts for consulting engineering services for the
  preparation of detailed  plans  for  the  construction  of  solid  waste
  management  facilities  or  the  improvement  of  existing  solid  waste
  management facilities; provided, however, the contract  cost  negotiated
  between  the person or firm chosen to perform the consulting engineering
  services or market research and the applicant for state aid  under  this
  title shall be subject to the approval of the commissioner;
3.  expend  money  received from the state pursuant to this title only
  for purposes consistent therewith.