All projects must submit an Irrigation Water Management Plan Worksheet (Appendix B) documenting the existing and proposed irrigation systems. Insuring Irrigation.Customize and Download this "Irrigation Installation Contract". This file is a comprehensive contract template for performance-based irrigation management. Looking for some help with your irrigation service contracts? Here is a free irrigation service contract template. Landscapers are considered contractors for sales tax purposes. Farm Service Agency. What form(s) do I need to fill out? What document(s) do I need to bring?