Grading and Drainage Plans

Performance You Can Count On—Because We Do the Work.

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Grading and Drainage Plans

Grading and drainage plans are the blueprint for your project’s stability and regulatory compliance. From balancing massive earthwork quantities to designing intricate drainage for urban infill, our plans bridge the gap between architectural vision and heavy equipment reality.

How We Deliver Value

We deliver value by producing plans that navigate the approval process quickly while optimizing construction costs. On the Wasco Stored Water Recovery Unit, our grading design for the reservoir and forebay wasn’t just about moving dirt; it was about optimizing the cut-and-fill for miles of alignment to minimize off-haul costs.

We consistently save our clients time and money through…

Precision Grading for Complex Sites

Standard sites are easy; we specialize in the difficult ones. The Silver Lake Reservoir Replacement required grading plans of exceptional complexity: creating a 15-acre rolling park landscape directly on top of a buried 110-million-gallon concrete structure.

Drainage Systems & Flood Control

We engineer systems that manage peak storm flows through a combination of sheet flow, retention basins, and piped infrastructure. At the Semitropic Pond-Poso Spreading and Recovery Facility, we designed the grading for 34 interbasin structures to manage the precise movement of water across a vast spreading ground.

SWPPP & Water Quality Integration Modern

We integrate Low Impact Development (LID) features and Stormwater Pollution Prevention Plan (SWPPP) requirements directly into the drawing set.

For the City of Davis Wastewater Treatment Plant, working adjacent to sensitive wetlands meant our drainage plans had to strictly control runoff quality and velocity.

From Plan to GPS Model

We design grading plans with the end-user in mind: the equipment operator. Our CAD files are structured to easily convert into 3D models for GPS machine control.

This seamless transition from the engineer’s desk to the grader’s blade reduces staking costs and improves field accuracy.

Permit-Ready Documentation

W. M. Lyles Co. understands the specific checklists of California municipalities and agencies. We produce grading and drainage plans that are detailed, clear, and fully compliant with local codes, speeding up the plan check process.

Whether permitting a new treatment plant or a complex retrofit like the Anaergia Rialto Bioenergy Facility, we provide the technical documentation that clears regulatory hurdles and gets you to construction faster.