While Boeing Co.’s billion-dollar growth plans have seized the limelight, another manufacturer in Charleston County is deliberating whether to expand and beef up its local payroll,

For now, the business is being identified publicly by the code name “Project Columbus.”

The company is proposing to add 60 full-time jobs and invest $4.8 million by adding onto its local operations by 2016.

The expansion is not a lock. The company is holding an “internal corporate competition” pitting the Lowcountry factory against a “sister” location elsewhere in the United States, according to the county’s Economic Development Office.

County Council is being asked to approve an incentive to “strengthen the business case for the local plant” to win the expansion, according to a public document. The state also is offering unspecified public assistance to help seal the deal.

The company expects to announce the winning site by mid-April. Its identity would be disclosed immediately after that decision, the county said.

Project Columbus is asking to extend by a decade its existing agreement that allows it to pay a negotiated fee on its equipment and other property instead of taxes.

If the company picks the Charleston area for the jobs, County Council will have to vote three times to approve the change, which would take the fee-for-tax deal through 2036.

Project Columbus isn’t all Charleston County business recruiters have on their plates. Boeing on Tuesday confirmed that it is looking to add at least 2,000 new jobs at its local 787 campus by 2020 under a $1.1 billion capital investment plan.

Contact John McDermott at 937-5572.