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Commission approves Oakwood preliminary plat after staff say sewer details will be resolved at construction stage
Summary
Commission approved a revised preliminary plat for Oakwood subdivision that reduces street right‑of‑way width; wastewater staff said sewer inverts and pump‑station eliminations will be addressed during construction plan review.
The Columbia Municipal Planning Commission approved a modified preliminary plat for Oakwood subdivision, a project that adjusts street right‑of‑way widths and retains the previously approved lot count.
The commission’s staff report said the request seeks to reduce the required street right‑of‑way from 70 feet to 55 feet for the subdivision (previously approved as a CD3 character district). Staff explained the reduction eliminates some retaining walls without increasing the number of lots or changing the previously approved civic‑space commitments. The staff report referenced the preliminary plat and site development plan previously approved by the commission.
Commissioners asked wastewater staff about whether gravity sewer could be achieved to the existing sanitary system on Dahlia Lane. Ryan, a wastewater staff member, said the applicant used public map elevations for initial calculations and that the numbers are “probably close enough,” but emphasized that the sewer inverts and detailed specifications are typically reviewed at the construction plan stage. Paul, planning staff, told the commission: "That information... typically comes at the construction plan stage." Commissioners confirmed that if construction plans show an issue, adjustments would be required before installation.
A motion to approve the preliminary plat "subject to all technical comments" passed unanimously; the motion was seconded and recorded with ayes from the commission. Staff said future construction plans and state review will confirm invert elevations and any necessary pump station sizing; the commission was advised that the applicant aims to eventually eliminate an existing pump station as part of downstream sewer improvements and meter installations in the Royal Oaks area.
The approval is preliminary only; infrastructure installation and detailed sewer plans must be reviewed and approved in subsequent phases before final plat recordation.
