Site planning for K-12 schools in Oregon and Washington means designing for heavy rain, steep terrain, and green schoolyard requirements. Here is how...

Oregon and Washington K-12 campuses run on forty to sixty inches of rain a year, built on hillsides that weren't flat to begin with. Stormwater and grading aren't separate disciplines on these sites, they're the same conversation in two different languages.

Why School Sites Are Different

K-12 school projects have a regulatory layer that commercial and residential projects don't. In Oregon and Washington, school construction is reviewed by the state through OSPI (Washington) or ODE (Oregon) facility programs, plus local building departments for code compliance. The civil site work -- grading, paving, utilities, and stormwater -- is reviewed as part of the overall school project package, with stormwater often going through a separate city or county public works review.

This means the civil engineer's drawings go through parallel reviews: the state education agency for the campus scope and the local jurisdiction for building permits, offsite improvements, and stormwater compliance. The two agencies don't coordinate with each other, and their requirements sometimes conflict. Managing these dual submittals is a core skill for any civil engineer working on school projects in the Pacific Northwest.

Site Planning Around Campus Operations

School sites are occupied during construction. Students are walking to class, buses are running their routes, and parents are queuing for pickup — all while earthwork equipment is operating, trenches are open, and material deliveries are arriving. The construction phasing plan has to account for continuous campus access, temporary pedestrian routes, and separation between construction traffic and student circulation.

We develop a detailed phasing plan early in design that identifies which areas of the campus will be under construction during each phase, where temporary fencing will be located, and how vehicular and pedestrian access will be maintained. This phasing plan becomes part of the construction documents and is reviewed by the state education agency and the school district's facilities team. Getting it wrong means construction delays, because you can't block the only accessible path to a classroom building during the school year.

Stormwater on School Campuses

School campuses are ideal candidates for integrated stormwater design. Large open areas — playfields, courtyards, outdoor learning spaces — can double as stormwater treatment and detention facilities if they're designed correctly from the start. Bioretention areas can be incorporated into landscape zones between buildings. Pervious paving can be used for outdoor basketball courts and walkways. Rain gardens become teaching tools for environmental science curriculum.

The challenge is convincing the school district's facilities department that a bioswale in the middle of the quad won't become a maintenance headache. We address this by designing low-maintenance systems with proven plant palettes, providing detailed maintenance manuals, and pointing to the growing number of schools across the Pacific Northwest and nationally that have successfully integrated stormwater BMPs into their campuses through green schoolyard initiatives.

State and Local Review: Setting Realistic Expectations

School project review timelines in Oregon and Washington are long and often unpredictable. In Washington, OSPI reviews school construction projects for compliance with state requirements, while the local building department handles code review — and their timelines don't align. In Oregon, ODE facility grants have their own approval process layered on top of local permitting. A first submittal typically takes 3–6 months for review through the combined agencies. Back-check cycles add another 2–4 months. Total time from first submittal to full approval commonly reaches 8–12 months.

The civil engineer's best defense against extended review is a clean, complete submittal to all agencies simultaneously. We use a pre-submittal checklist that catches the most common comment triggers: missing accessible route details, incomplete grading at building entries, utility conflicts with structural foundations, and discrepancies between the state and local submittals. Every comment avoided is two months saved.

The Bottom Line

Every project has its own constraints — site geometry, soil conditions, agency jurisdiction, schedule pressure. What doesn't change is the physics: water flows downhill, utilities need clearance, and code requirements aren't negotiable. The projects that go smoothly are the ones where the civil engineer is involved early enough to shape the site plan around these realities rather than retrofitting solutions after the architecture is locked.

At Calichi Design Group, we've built our practice around getting these details right the first time. Our team has permitted projects in dozens of jurisdictions across the West Coast and Pacific, and we know which agencies want what, which reviewers flag what, and which shortcuts actually cost more time than they save.

If you're starting a project and want to avoid the most common civil engineering pitfalls, reach out for a conversation. We'll give you an honest assessment of what your site needs and a fixed-fee proposal — usually within a week.