The General Plan covers all public and privately owned land within the City limit. However, the State of California encourages cities to look beyond their borders when preparing a General Plan, as issues are not necessarily confined to political boundaries. Accordingly, the planning area for the Chino General Plan Update includes land adjacent to the city to the northwest in Chino's Sphere of Influence (SOI). The SOI represents Chino's probable future boundary and service area. Land in the SOI may one day be annexed into the City, and while the City doesn't have jurisdiction there now, it can "pre-zone" land in the SOI for the purpose of determining the zoning that will apply to properties if they are annexed to the City in the future. For this reason, the General Plan will cover all land within the City limit and the SOI.