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Our spectroscopic target sample of 235 of the bluest UV knots surrounding NGC 628 yielded 15 H_alpha detections (6%), roughly the number expected given the different mean ages of the two populations.  The measured vertical velocity dispersion of the H_alpha knots between 1 - 1.8 R25 (13.5 - 23.2 kpc) is < 11 km/s.  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