Directions: Fill out the following request form completely and submit the appropriate fee. Minimum requirements for obtaining a subsurface wastewater treatment system may include obtaining a copy of a survey for your property/parcel from the Clerk & Recorder's Office, excavating an 8-foot hole in the area of the proposed drainfield, taking a nitrate sample from an existing or nearby well or providing other information to fulfill the minimum requirements of DEQ 4 and Fergus County Regulations.