Civil PE Stamp in Scottsdale, AZ — Grading, Drainage & Site Plan Sealing

My Scottsdale drainage review treats the entire stormwater path as one system: where rain lands, how it concentrates, where it is detained, how it leaves the site, and what happens when the design storm is exceeded. I verify the hydrologic inputs against accepted desert-region data, check runoff coefficients against actual surface conditions, and confirm detention sizing with routing — not just volume in versus volume out. Storm drains and channels get capacity checks with realistic roughness and slope values. The grading plan's flow arrows must agree with the drainage calculations: water cannot be shown flowing uphill on the grading sheet while the calculations assume otherwise. Overflow paths for storms beyond the design event get explicit attention, because monsoons exceed design assumptions and the city wants to know where that water goes.

Grading review covers the earthwork balance, cut and fill slopes at stable inclinations for the soils, retaining wall locations with structural coordination for walls over the city's threshold, and accessible routes that match the architectural site plan's slopes and cross-slopes — a frequent mismatch I check deliberately. Utility review verifies water and sewer sizing, separations between wet and dry utilities, connection details to Scottsdale's systems, and fire-service provisions coordinated with the fire department's requirements. Pavement sections follow city standards for the traffic they will carry. The final coordination pass walks the civil set against the architectural and landscape plans: grading limits versus landscape areas, utility trenches versus tree preservation zones, drainage structures versus hardscape. In Scottsdale's consolidated review, these mismatches surface fast — I surface them first.

I verify these before the Arizona PE seal goes on a Scottsdale civil set. Drainage leads the list because drainage leads the review. • Arizona PE license verified; responsible charge under AZ R4-30 documented • Parcel overlays confirmed: washes, hillsides, native plant and open-space protections • Hydrology inputs verified for desert conditions; detention/retention routed and sized • Storm drains, channels, and overflow paths checked as one system • Grading, earthwork, slopes, and retaining-wall coordination complete • Water, sewer, and dry utilities sized with city connection points confirmed • Accessible routes coordinated with architectural site plan • One Stop Shop submittal requirements met; set organized for consolidated review