Find the operator and available record.
Share property documents and ask which irrigation system, if any, serves or crosses the area. Have the responsible parties explain gaps instead of treating a regional map as a surveyed route.
Decks · Agnew, Washington
Decks in Agnew should account for any irrigation route beneath or beside the proposed platform. A lawn without an open ditch is not evidence that no irrigation infrastructure is present below it.
Ask the property owner, irrigation operator and provider which records and locating steps are needed before the footing layout is settled. Keep inspection or maintenance access part of that discussion rather than discovering it after the deck closes the area.

Deck building
Have the designer distinguish the planned deck outline from the actual support and excavation locations. Resolve an uncertain line or operator-access need before those points become a fixed construction assumption.
Share property documents and ask which irrigation system, if any, serves or crosses the area. Have the responsible parties explain gaps instead of treating a regional map as a surveyed route.
Ask what locating or further assessment is needed for the proposed excavation, including any privately owned portions. Coordinate required locating with the provider and operator before digging.
Discuss valves, maintenance routes and any operator requirements affecting the finished deck. If the support layout changes, have the designer update the actual plans and review record.
Before work begins
Confirm County review for the actual deck and related land work. A conditional building-permit exemption does not locate irrigation or authorize interference with infrastructure.
This guide establishes no pipe depth, safe excavation offset or easement boundary. Obtain the actual operator information and professional assessment needed for the site.
Check the actual records and any locating needed with the operator and provider. Irrigation can include buried components.
Ask what the map covers and what additional operator or private-line locating is needed for this work.
Resolve needed operator and maintenance access with the footprint and supports before construction fixes the layout.
Share the proposed deck area and any irrigation records, operator contacts or access concerns.