Specifications include, but are not limited to: Phase 1 (PI) Plots: In Phase 1 (PI) plots are evaluated by aerial photography and other imagery to determine the location of forested lands. In order to meet national precision standards, these data are then stratified into Plot and Condition status classifications using satellite imagery and other remotely sensed data. Phase 1 evaluations are completed in the office as well as a subset in the field with on-the-ground verifications or Quality Assurance (QA) of the office classifications (Phase 1 verification plots). Office classifications are not part of this contract. Phase 1 (PI) verification and Phase 1 QA Special verification plots are included in this contract. Phase 2 Plots: Phase 2 is the ‘on the ground’ plot data collection effort for plot locations identified as having accessible forestland. These are commonly known as “FIA field plots”.