Aspen City Council declined on Tuesday to move toward a change in the rules that would have allowed high density development on lots that are smaller than the current minimum of 6,000 square feet. The proposed code amendment, which was brought forward by a land use consultant representing a real estate developer, had too much opposition by residents and potential problems for neighborhoods, council members said during their regular meeting. Since public outreach began by BendonAdams on behalf of Tri Dal Real Estate, Ltd. earlier this year, dozens of letters to the editor have been published in local newspapers and opinions shared with city staff voicing opposition to the proposal.