After public notice, each county council shall hold a public hearing on the Commission’s proposed budgets at least 21 days after receiving the budgets from the county executive. On or before June 1 of each year, each county council shall, by resolution: approve the portion of the budgets allocable to that county, with any alterations made under subsection (c) of this section; and subject to the requirements and limitations of Subtitles 3 and 4 of this title and Title 21 of this article, impose taxes in the amounts the county council determines to be necessary to finance the portion of the budgets allocable to that county. Subject to paragraph (2) of this subsection, each county council may add to, delete from, increase, or decrease any part of the budgets allocable solely to that county. This paragraph applies only in Prince George’s County. In Prince George’s County, the county council may not allocate any part of the budgets allocable solely to the county to: the county council; or unless approved on or before June 1 in accordance with subsection (b) of this section: the Prince George’s County government, including a governmental unit of the county; or any third–party business entity or individual. Budget items allocable to both counties as submitted by the Commission shall be concurred in by both county councils. The county councils may concur in additions to, deletions from, increases to, or decreases from budget items allocable to both counties. Failure of the county councils to concur in any budget item allocable to both counties by June 15 shall constitute approval of the item as submitted by the Commission.