Commission approves preliminary plat for Falling Leaf Ranch with environmental and infrastructure conditions

The Planning and Zoning Commission approved the preliminary plat for Falling Leaf Ranch, a proposed subdivision of approximately 122.007 acres southeast of Stonewall Pass Lane, subject to an extensive set of conditions addressing environmental remediation, abandoned pipelines and wells, drainage, and infrastructure coordination.

Aubrey, city planning staff, described the project as a partial redesign of Mustang Meadows that would create large residential lots and extend Friendswood Parkway. Staff recommended approval with conditions, noting the property was formerly Exxon’s Hastings field and contains abandoned pipelines, dry wells and recorded deed restrictions that limit subsurface use and require certain construction methods such as slab-on-grade foundations.

Staff’s recommended conditions include addressing comments in the corrections report, submittal and approval of a drainage-impact analysis (which could require plan changes if underground detention is infeasible), approval and execution of an environmental remediation plan, written approval from Exxon for infrastructure installation where required by deed restrictions, a chemical analysis of soil and groundwater consistent with the International Plumbing Code (2017), and documentation or removal of identified pipelines or dedication of easements where pipelines remain.

Christian Offimer, representing the developer, and Asel Flint, the engineer of record, explained the developer’s need for conditional approval to secure lender commitments while environmental and utility issues are resolved. Flint said the site contains 22 dry wells, chloride contamination associated with historical oil-exploration activities, and several abandoned crude-conveyance pipelines; the developer’s environmental consultant Laughlin Environmental is engaged in mitigation planning.

Commissioners voiced concerns about the number of unresolved technical issues but agreed that an approval with conditions will allow the developer to continue coordination with staff and state or private pipeline owners. The approval requires the developer to return the plat for resubmittal once the stipulated conditions are met; staff noted there is no deadline to resubmit but that any resubmittal must be placed on an agenda within 15 days of receipt.

The commission’s conditional approval advances the subdivision through the preliminary-plat phase but leaves detailed technical and remediation work to the developer and reviewing agencies before final plat and building permits are allowed.