Planning board debates lot‑grading, fill limits and shoreline rules; staff to refine draft

Planning staff presented a draft lot‑grading ordinance and resilient‑shoreline measures on April 30 intended to limit harmful fill, preserve natural buffers and create a clearer review process for shoreline and low‑lying properties.

Staff explained the draft would create a new “lot grading” article so rules for impervious surface, lot‑grading review and fill could be consolidated rather than scattered across chapters. Staff said the draft attempts to codify measures already used administratively and to create a tiered review process for neighborhoods with different stormwater and resiliency conditions. Staff noted the draft includes a proposed maximum fill limit and new requirements for tapering fill near shorelines.

Public commenters urged different outcomes. In a written comment read into the record, Kevin Priester opposed new bulkheads and seawalls and said “[t]here is no way that any fill or shoreline modification will have no negative impact on the adjacent waterway,” arguing the city should encourage houses on piers or stem walls rather than hardened shorelines. Donna Dove, a homeowner in South Davis Shores, asked whether raising an existing slab‑on‑grade house to meet a grant requirement would be allowed and urged grandfathering for existing homes being elevated. Lauren Guyber described persistent crawl‑space problems in her home and said different construction approaches have different tradeoffs. Tom Bartlett asked for clarification about the draft’s proposed 30‑inch maximum retaining‑wall height and how the first 30 inches of protection affect flooding.

Board discussion covered a range of technical and policy questions. Members generally supported creating a variance or appeal route to address the city’s many unique lot conditions, but differed on how far to apply new standards to master‑planned subdivisions that were permitted under older standards. Staff and board members flagged a potential state preemption risk: the city attorney informed staff the legislature has considered limits on local regulation of fill, which increased urgency to draft local rules that could be argued for grandfathering if the state acts.

Major specifics discussed (from the staff draft and board/staff exchange): - A proposed cap on fill: “The maximum elevation of the fill on any lot shall not exceed 1 foot above the highest adjacent grade or the current base flood elevation of the property based upon the current FEMA flood insurance rate map, whichever is less.” Staff said that language is intended to steer applicants toward stem‑wall or pier construction when necessary. (source: staff draft) - A 3‑foot setback from property lines for certain features to simplify implementation and avoid duplication of setback rules. - A 30‑inch height limit for some retaining walls so features below that height are treated differently in building and setback rules. - A 25‑foot “natural buffer” to protect jurisdictional wetlands/waters; staff said preserving an existing drainage pattern and retaining a 25‑foot buffer would be an incentive that could avoid a board review requirement. - An exemption pathway for pier/piling construction with “minimal fill,” but board members asked that the ordinance define “minimal fill.” - A proposal that retaining walls, bulkheads and other shoreline features be engineered and that applicants provide an analysis by a registered design professional; board members sought clarity on which city department (public works, building department) would conduct the technical review and whether the city would retain review authority on appeal.

Board direction and next steps: staff asked whether members wanted clarification on any specific items. Members repeatedly requested a clear variance/appeal process (several suggested Chapter 28 variance language), clearer measurement rules for wall height and for the 25‑foot buffer (measurement from mean high water or jurisdictional wetland line), and a defined approach to master‑plan neighborhoods that were permitted under older codes. Several board members urged staff to preserve incentives for non‑fill construction (pier/stem wall) and to consider allowances — e.g., limited extra lot coverage for owners who leave existing grade intact.

No formal motion or vote was taken on the ordinance language at the April 30 meeting. Staff said it would take the board’s comments back to the working group, refine definitions and clarify where the new rules should sit in the city code (Chapter 28, 29 or a new article), and return with a redline for further review.