Soon, it won't exist. Six of the eight high-rises that once made up Stateway Gardens public-housing development have already been torn down, and another is being prepared for demolition now. The CHA is destroying 22,000 units and building only 8,000 new ones -- still enough, they claim, to house the 25,000 families currently living in Stateway, but critics say that doesn't take into account the thousands who were on the waiting list.