Fortuna panel approves tentative map to split 7.69-acre parcel at 3495 Ronerville Road amid drainage and sewer questions

The Fortuna Planning Commission voted to adopt Resolution P2025-3126, approving with conditions a tentative map to subdivide a 7.69-acre parcel at 3495 Ronerville Road into two new residential lots and a remainder parcel and finding the project exempt from the California Environmental Quality Act.

Community Development Director Sherry Meads said the division would create Parcel 1 (0.23 acre), Parcel 2 (0.18 acre) and a larger remainder that includes an existing single-family home; all parcels will be served by city water, sewer and PG&E utilities. Meads said the site’s General Plan designation is Residential Medium, which anticipates 7 to 14.9 units per acre, but the proposed map would result in approximately 2.5 units per acre in this instance because of site constraints.

Applicant representative Wally Wright raised concerns about wording in the staff report that describes an adjacent hillside as "historically unstable," saying the hillside failed after a contractor pushed material over the slope during construction activity and that geotechnical work had been completed. "To say that the hillside is unstable, I have a little bit of a problem with that," Wright said. Wright asked whether documents showing the prior contractor’s remediation were on file.

Deputy City Engineer Matt Nyberg said the applicant’s geotechnical engineer recommended a 75-foot setback and that the city would accept an engineer’s recommendation as the basis for the setback; Nyberg also told commissioners that a drainage report and improvement plans are required as part of the project. "The recommendation of a 75 foot setback was what the outcome of that was," Nyberg said during the commission’s questions and answers.

Public commenters raised drainage and sewer concerns. Resident Brad Chamberlain said an open, makeshift ditch that channels groundwater and debris toward the creek routinely clogs and overflows onto his property and asked how the project would address that flow. City staff said a drainage report was requested and that the project’s recent site work had contributed to a recorded overflow event that triggered the need for remedial drainage improvements.

City staff told the commission that three private sewer manholes and associated piping on the property historically were maintained by private owners; the proposal would place three private laterals and the city would accept maintenance responsibility for the mains between manholes only after an engineering review to determine whether upgrades are required. Staff emphasized that the city cannot accept private sewer assets into the public system without assessment; any required upgrades would be determined by the city engineer and completed before acceptance.

Commission discussion addressed nonvehicular access strips, future potential for extension of the private driveway into a public cul‑de‑sac, and whether additional future divisions of the remainder parcel might be possible under the Subdivision Map Act. Staff said the tentative map could allow further subdivision consistent with the Map Act, and that the current approval creates three lots (two new plus the remainder). The planning commission approved the tentative map with conditions; the roll-call vote recorded four yes votes and two no votes and the motion passed.

Conditions of approval include submittal of a drainage report and improvement plans, geotechnical compliance with the engineer’s recommendations, and an engineering review of the private sewer system prior to city acceptance of any mains.