(a) The department may revoke, suspend, place conditions on or refuse to renew any license to operate a mobile manufactured home park for a violation of any provision of this chapter or any regulations issued hereunder or any other state or local law or regulation, after hearing, except that if the department upon investigation finds a licensee is not providing adequate sewerage facilities, electrical, plumbing or sanitary services, water supply or fire protection, suspension of the license shall be automatic, provided such licensee shall be entitled to a hearing before the department not later than thirty days after such suspension. A license may be reinstated or reissued if the circumstances leading to the violation have been remedied and the park is being maintained and operated in full compliance with this chapter and the regulations hereunder. Each officer, board, commission or department of the state or any local government shall assist the department with technical data on sewerage facilities, electrical, plumbing or sanitary services, water supply or fire protection and shall submit such data to the department for the department's use in any hearing held pursuant to this section. In addition to revoking, suspending, placing conditions on, or refusing to renew any license to operate a mobile manufactured home park, the department may, following an administrative hearing, impose a fine of not less than fifty nor more than three hundred dollars for each day that such violation exists. In connection with any investigation the Commissioner of Consumer Protection or the commissioner's authorized agent may administer oaths, issue subpoenas, compel testimony and order the production of books, records and documents. Each owner shall retain all leases, disclosure statements, rules and regulations required under this chapter for at least four years after any resident to whom they relate vacates the park.