Pacifica Planning Commission approves site permit for Rockaway/Bayview home with strengthened geotech and stormwater conditions

Pacifica's Planning Commission voted Dec. 1 to approve a site development permit (PSD-83818) and tree permit (TP424) for a proposed single-family residence on an approximately 26,055-square-foot lot near Rockaway Beach Avenue and Bayview Road.

The motion, made by Commissioner Ferguson and seconded by Commissioner Redfield, passed 4-0 with one abstention. The commission adopted a package of conditions that tighten geotechnical oversight, require hydraulic calculations demonstrating the project will not increase post-development runoff (held to a 100-year-storm standard), mandate preconstruction surveys and a maintenance agreement for stormwater treatment measures, and require an improvement agreement with security to ensure completion of retaining-wall and slope-related work.

The project before the commission is for a two-story single-family residence, described in staff materials as about 3,100 square feet (the motion reads approximately 3,180 square feet), with a 668-square-foot, three-car garage on a 26,055-square-foot vacant lot. Staff told commissioners the design meets applicable zoning standards and that two protected Monterey pines (one of which staff identified as dead) would be removed with a 2:1 replacement requirement (four new Monterey pines).

Why it mattered: Neighbors urged the commission to delay or deny the application, citing late mailed notice, the steep topography of Bayview Road and Rockaway neighborhood, existing water flows, and risks of erosion or landslide during construction. Several speakers said they received mailed notices too close to the hearing date to allow the 10 days of notice they expected; staff responded that notices were posted and taken to the post office on Nov. 20 and that the staff report was posted earlier in the week.

"We were not constructively given our 10 days' notice," neighbor Susan Wu said in public comment, describing repeated runoff and safety concerns on Bayview Road. Multiple other neighbors described past earth movement in the area and asked for additional documentation, story poles or an independent geotechnical review.

Applicant and staff response: The applicant, Javier Chavarria of JC Engineering, said the owners had negotiated an easement change that expanded site access from a 12-foot strip to a 19-foot access by returning a 7-foot planting easement to the property, and that North County Fire required the onsite hammerhead/turnaround that shaped the driveway design. Chavarria said two independent geotechnical firms — and the city's reviewers — had concluded the site was suitable and that the proposed drainage design (bioswales, bioretention/detention areas and a rain-harvesting system with backup pumps) would reduce runoff compared with current conditions.

"We have three different independent soils engineers and the city staff reviewing that," Chavarria said, summarizing the technical review and calling the site an infill lot.

Technical safeguards added by the commission: Commissioners and staff negotiated several conditions meant to address neighbors' concerns while allowing the project to proceed. Notable requirements added to the resolution include: - A requirement that the applicant retain a California-licensed geotechnical engineer to provide observation, testing and special inspections during grading, drilled pier operations and retaining-wall construction, with a minimum 72-hour notice to staff before major earthwork; a geotechnical certification prior to occupancy verifying substantial conformance with the soils report. - Submission of hydraulic calculations and a letter from the engineer of record demonstrating the proposed storm-drain system will not increase runoff beyond predevelopment conditions, and design of on-site detention for flows in excess of existing conditions for a 100-year frequency storm. - A preconstruction photo or video survey of Bayview Road and Rockaway Beach Avenue and a requirement that any damage to public improvements caused by the project be repaired at the applicant's expense. - An operations and maintenance plan and recorded maintenance agreement for stormwater treatment measures, with inspection intervals to be set by the city engineer and enforcement provisions allowing the city to perform maintenance as a lien if the owner fails to do so. - An improvement agreement recorded against the property, requiring completion of retaining-wall and related slope-improvement work and providing security in an amount determined by the city engineer to ensure completion of those improvements.

Construction details and limits: The applicant said foundations will use drilled piers (not pile driving), which staff and the applicant described as significantly less noisy. The tallest proposed retaining wall that the applicant identified is about 14 feet 6 inches at the northeast corner near the hammerhead turnaround. The applicant also said approximately 60% of excavated material would be reused on site to limit truck traffic.

Next steps: The resolution incorporates the conditions read into the record at the Dec. 1 hearing and requires submission of supporting plans and certifications during the building-permit process; third-party and city engineers will review the hydraulic and geotechnical submittals. The commission set the conditions and approved the permits; the improvement agreement and exact security amount will be determined and recorded prior to issuance of applicable grading or building permits.

The Planning Commission adjourned at 10:34 p.m.