Authors examine the proportion of undergraduate applications, admissions, and enrollments preceding, during, and after Proposition 209 while accounting for the relative growth in University of California eligibility for underrepresented minorities (URMs). They employed standard deviation analyses to measure dispersion of the URMs to non-URMs. Results suggest that "disparate impact" towards URMs persists, the magnitude is large, and affirmative action alone is insufficient to ensure an equitable admissions process. (Contains 5 tables and 12 notes.)