MARIETTA — Chairman Tim Lee said Friday that the Board of Commissioners won’t be hiring three department heads — directors of public safety, public services, and support services — before the end of the year, as previously anticipated.

Instead, he expects commissioners to review the final candidates during an executive session, after which background checks will be done. The earliest the directors will be named is the Jan. 8 commission meeting.

Lee also said he and county employees are reviewing proposals from 20 firms who would like to lobby on the county’s behalf during the state General Assembly session and in Washington.

The 2013 session of the General Assembly begins Jan. 14.

In past years, Support Services Director Virgil Moon did the county’s lobbying at the General Assembly. Moon left the county this fall to become chief financial officer at Cobb and Douglas Public Health.

Lee said the county is contemplating whether it needs lobbyists at both the state and federal levels, and if so, whether one firm can do both. The topic is not on Tuesday’s agenda, though Lee said he hoped to have the issue wrapped up by Christmas. The county has not estimated how much money it is willing to spend on its lobbyist, Lee said.

Commissioners are expected to move forward with two park projects at their Tuesday meeting.

Hurt Road Park by Hicks Road, which was developed in 1980, has a $1.8 million SPLOST earmark for renovations.

Commissioners will vote on approving a contract with Southeastern Engineering, Inc. for $101,110 to renovate the five athletic fields as well as replace the concessions, restroom, and maintenance buildings there.

“We’re timing construction so that it disrupts the football and baseball programs as little as possible,” said Tom Bills, senior project manager for construction with the county.

An expected completion date is sometime in 2014.

Commissioners are also set to approve a $239,500 design contract with Lyman Davidson Dooley for Wild Horse Creek Park in Powder Springs.

The plan is to close the aging pool at Powder Springs Park after next year’s swimming season and install water features at Wild Horse Creek Park, which is located just down the road. Features include a splash pad and a zero-entry pool, which is a pool that gradually becomes deeper.

The project would be finished in time for the 2014 swimming season.

The SPLOST earmark for that park is $6.9 million, although the sum involves other projects such as renovated athletic fields and parking additions, Bills said.

The meeting begins at 9 a.m. Tuesday in the boardroom located at 100 Cherokee St. in Marietta.