[Jon Stratis]

According to the manual, EI guidelines are (section 6.14.7.1):

■ Extent and inventiveness of the team’s efforts to recruit students to engineering with particular emphasis on the most recent year’s efforts. Measurable success of those efforts.
■ Extent and effectiveness of the team’s community outreach efforts with particular emphasis on the most recent year’s efforts. Measurable success of those efforts.
■ A commitment to science and technology education among the team, school, and community.
■ Achievement of the FIRST mission and ability to communicate that at the competition and away from it.
■ Efforts are ongoing, not strictly concentrated on the build and competition season.

While Chairman's is summed up as (section 6.5.4):

The Chairman’s Award is presented to the team judged to have created the best partnership effort among team participants and which best exemplified the true meaning of FIRST through measurable impact on its participants, school, and community at large.

Those two really do go together closely.