A demolition permit shall include the following requirements: that the structure be wholly reduced and site restored to natural grade leaving no voids, projecting elements, or hazardous conditions; that all debris shall be disposed of in a place and manner which complies with Section 9.504 and which creates no nuisance or hazard or other condition prohibited by ordinance or other law; that any sewer lines must be sealed off 5' from the property line, and any septic tank shall be decommissioned pursuant to and approved by DEQ. A DEQ certificate of compliance is required as a condition of final.