VALPARAISO | The Porter County Plan Commission will consider approving an ordinance this evening that would require developers to protect as many trees as possible when pursing projects in the unincorporated areas.

The proposal, which is believed to be the first of its kind under consideration at the county level in Indiana, would both prohibit the removal of many trees and require the replacement of others that are approved for removal, according to county planner Raymond Joseph.

"We're trying to keep Porter County as green as possible," he said.

There currently is no tree preservation ordinance on the books in the county, Joseph said.

Beyond the aesthetic value of preserving as many trees as possible, the proposed ordinance lists among its intentions to promote tree canopies for energy conservation in buildings, to increase photosynthesis and purification of air, to reduce excessive heat and protect critical animal habitats.

A representative from the Porter County Builders Association could not be reached Tuesday for comment on the impact of the proposed ordinance.

Joseph said he and Plan Commission Director Bob Thompson came up with the proposal based on models provided by the Ground Rules consulting firm.

It has been under review by Plan Commission members, who have made suggested changes, he said. If the commission approves the ordinance, it will be forwarded to the county commissioners for final consideration.

The proposal calls on developers to submit a tree survey and conservation plan with development plans or a subdivision application. The conservation plan should aim to protect all specimen trees and protect non-specimen trees larger than 12 calliper-inches at breast height.

"As many trees as practical shall be preserved," the ordinance reads.

The proposed ordinance sets various standards depending on the density of tree coverage. Developers are called on to adjust the location of structures, parking lots and roads to avoid the need to remove trees.