D4 Information Page Content D4 ApplicationsThe following PDF files include blank D4 application forms as well as a list of frequently asked questions.D4 GuidelinesD4 Study FAQD4 Individual Application FormD4 Developers Application FormAnnual monitoring reports are available for some County active and closed landfill sites. For further details contact Customer Services at (705) 735-6901 or (800) 263-3199.To access a copy of the Ministry of the Environment D4 Guideline please visit http://www.ene.gov.on.ca/.