A coalition of South Jordan residents will ask Utah Supreme Court justices Tuesday to rule that city officials erred in not allowing the group to conduct a referendum.

A hearing on the coalition's petition for extraordinary relief will be held at 10:30 a.m. in the Supreme Court chambers.SOS, an acronym for "Save Open Space," wants the high court to overturn a Feb. 10 City Council decision rejecting a request to circulate a referendum petition.

At the time, council members denied the request based on a legal opinion by City Attorney Mike Mazuran that state law does not permit referendums on individual zoning decisions.

The coalition was attempting to conduct a referendum to override a Dec. 16 council decision granting developers of the proposed 85-acre RiverPark office complex a 120-day zoning extension to complete project plans.

SOS members, who oppose a large office complex on the Jordan River bottoms south of 10600 South, contend the council should have allowed the 85 acres to revert to original zonings.

Those zonings would not allow developer Gerald Anderson to proceed with a proposed office complex that calls for six or seven office buildings up to six stories in height on 69 developable acres.

Anderson indicates he intends to build a "Class A" office complex over the next eight years that will provide the city with about $250,000 annually in property taxes and up to $1 million a year in sales taxes.

Council members have also rejected a similar request from SOS to provide petitions for an initiative that would require the council to halt the RiverPark project.

They again cited an opinion by Mazuran that said state law also will not allow initiatives on individual zoning matters. That rejection has not been appealed to the Supreme Court at this point.

Anderson will go to the council Tuesday night for approval of his conceptual site plan and conditional-use permit.