Maury County planning panel approves Ironbridge Place preliminary plat with conditions after water, drainage concerns

The Maury County Regional Planning Commission on Monday approved a preliminary plat for Ironbridge Place, an eight-lot subdivision in District 8, subject to staff conditions addressing drainage, driveway access and water-service limitations.

Commissioners and applicants debated whether ponding could occur in the proposed detention area and whether the site had adequate fire flow. The applicant agreed to install 8-inch water lines and fire hydrants for future connection if off-site water infrastructure is extended, but the planning staff had a letter from Maury County Water System saying the site currently lacks required fire flow.

Staff said soils mapped on lots 2 and 3 extend into buffer areas and must be shown accurately on revised plans. Applicant representative Allen O'Leary, of WES Engineers and Surveyors, said two different soil reports were used and that maps for Lot 2 had been provided to staff. An engineer on the project reported preliminary flow calculations showed velocities under 6 feet per second in the detention area, and commissioners raised concern that a 1% grade across vegetated areas can cause ponding and solids to settle. Commissioners suggested hardened conveyances or a concrete flume to prevent persistent standing water.

On water service, the planning file includes a water-availability letter indicating domestic service is possible but that fire flow is not currently available. The commission was told that establishing a master meter and reestablishing a connection point on Mount Olivet Road would be one route to obtain fire flow; meeting remarks also estimated a roughly $1 million cost for that route and a roughly $2 million alternative route across Duck River, but those cost figures were presented during discussion without a supporting written estimate in the record.

The commission approved the preliminary plat with conditions that require the applicant to address the staff comments in the review letter (including revised soil mapping and drainage calculations), show driveway access for Lot 3 from the new local road (rather than from the existing road), and consider a hardened flow conveyance where needed. A motion to approve including staff conditions was made during the meeting and passed on a voice vote (ayes). The applicant agreed to install water mains and hydrants to allow future connection when external infrastructure is extended.

The action was recorded as approval of the preliminary plat with specified conditions; the commission did not require immediate on-site fire flow but documented the water-provider letter and required the applicant to coordinate with the water system and supply revised engineering at the time of construction plans.