All permits issued to commercial solid waste haulers pursuant to §§
213-25 through
213-27 above shall be in effect until revoked or until voluntarily surrendered by the permittee. Any bond standing in the name of the permittee shall be returned to said permittee within 10 days of the voluntary surrender of the permit, provided that the permittee is not then under investigation for or in violation of §
213-27 hereof.