Because the park is a publicly owned land, it is subject to oversight by Orphans' Court and the Commonwealth of Pennsylvania via the public trust doctrine, which much approve any changes to the size or configuration of the park, and determine whether the changes serve the public interest. The resolution before City Council is to authorize the City's solicitor to submit a petition to Orphans' Court to make the proposed changes, which were approved at Planning Commission earlier this year.
It's a complex issue, and important for the public to be able to fully understand the implications of the resolution, and how the changes to the park may impact the community.
This article from Penn Future on a 2017 ruling by the Pennsylvania Supreme Court on a proposed sale of a public park gives some interesting insight into how the public trust doctrine is applied to public parks.
The fine print:
Citizens wanting to testify must register online at the following link https://pittsburghpa.gov/clerk/council-meetings; (scroll to the bottom of the page) or may also contact the City Clerk's Office at 412-255-2138 prior to the hearing to have their name placed on the speakers' list. Speakers are limited to three minutes.
Note: if you do not register to speak in advance, but attend the hearing, you may speak for one minutes.