Complex sentence: After performing poorly on a field sobriety test, Cassidy was subjected to an alcohol breath test returning a blood alcohol level of 0.10, which is above the New York State legal limit of 0.08.
Split into simpler sentences: After performing poorly on a field sobriety test, Cassidy was subjected to an alcohol breath test. The breath test showed a blood alcohol level of 0.10, which is above the New York State legal limit of 0.08.