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City staff proposes lowering protected-tree threshold and raising mitigation to 1.5:1
Summary
City staff proposed amendments to Chapters 77 and 98 to lower the protected-tree caliper from 8 to 6 inches, standardize mitigation at 1.5 inches planted per 1 inch removed, add exemptions for city projects, and consolidate tree regulation into Chapter 98; staff will take the draft to the Parks & Recreation Advisory Board and then to Planning & Zoning and City Council for public hearings.
City staff presented a package of proposed amendments to the city's tree-preservation rules and a reforestation policy, asking the Rowlett City Council for feedback before taking the draft to the Parks & Recreation Advisory Board and the Planning & Zoning Commission for public hearings.
Staff said the current code contains conflicting mitigation provisions in two places (Chapter 77 and Chapter 98). As presented, the changes would: lower the protected-tree caliper threshold from 8 inches to 6 inches; adopt a uniform mitigation requirement of 1.5 inches of planting for each 1 inch of protected-tree caliper removed; retain a 4-inch minimum for replacement plantings; provide a half-inch-per-caliper-inch credit for saved trees between 4 and 6 inches (where demonstrable); add explicit exemptions for city projects, rights-of-way and utilities; and consolidate tree-mitigation rules into Chapter 98.
Staff also described the city's reforestation fund (section 98.141(g)) and proposed clarifications on allowable uses, such as tree-planting on city property, tree maintenance, resident education, storm mitigation reserves and inventories or canopy analyses. Staff asked the council whether the reforestation fund could be used for parks capital enhancements and said they would return the draft to the parks advisory board for technical review before public hearings.
Councilmembers raised several technical and policy questions: whether mitigation for very large specimen trees should scale more steeply than a linear ratio; how the city could verify developer claims that a tree would be "saved"; whether certain species (e.g., Bradford pears) should be included on a prohibited-plant list; and whether mitigation requirements should apply when large areas are cleared that include mostly unprotected trees. Staff noted state-law constraints and clarified that under state law an owner-occupied single-family or two-family dwelling may be exempt from mitigation for trees under 10 inches in diameter measured at 4.5 feet; staff said they would align local language with state law and preferred definitions.
No vote was taken; staff will refine the draft ordinance to respond to council feedback and take the proposal to the Parks & Recreation Advisory Board and through the required public hearings at Planning & Zoning and City Council.
