Create a polished Irrigation Installation Contract with Venngage's customizable template. Edit text, colors, fonts, and more.For professional irrigation system design services in Cuyahoga County, simply fill out the form to get in touch with experts. Customize and Download this "Irrigation Installation Contract". It will be necessary for you to fill out FORM B1 "BACKFLOW – LETTER OF. INTENT" form. They require such permits. To be awarded new contracts, the Contractor must be able to complete all previously awarded work within the due dates set in each contract with the Division.