Complex sentence: The adjacent 1.5 acre intramural field had artificial turf installed in 1999 and was lined for two regulation flag football fields which are utilized as mutli-purpose areas for intramurals sports, club sports, as practice space for the Pitt Band.
Split into simpler sentences: The adjacent 1.5 acre athletic field had artificial turf that was lined for two regulation flag football fields installed in 1999. The fields are utilized as mutli-purpose areas for intramural sports, club sports, as practice space for the Pitt Band.