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Excavation Services Company

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

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W. M. Lyles Co. delivers precision excavation and grading services for California’s most critical infrastructure projects. From mass excavation to fine grading, our GPS-enabled crews ensure your project stays on schedule, within budget, and compliant with all environmental regulations. With more than 80 years of experience and deep self-performance capabilities, we bring unmatched expertise to every cubic yard we move.

How We Deliver Value

We are trusted leaders in excavation and earthwork, known for delivering high-quality site preparation that supports essential water, wastewater, and energy infrastructure. At W. M. Lyles Co., safety, SWPPP compliance, and environmental stewardship are central to our work, and we pride ourselves on first-time-right execution that eliminates costly rework.

We consistently save our customers time and money through…

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Site Investigation and Subsurface Analysis

Thorough geotechnical evaluation forms the foundation of successful excavation projects. Our preconstruction teams analyze soil reports, identify rock formations, and map existing utilities to develop excavation strategies tailored to actual conditions.

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Shoring Systems and Excavation Safety

At W. M. Lyles Co., excavation safety is about protecting people, infrastructure, and progress. Our approach begins with thoughtful planning and continues with the right systems in the field. We design and install engineered shoring solutions such as soldier piles, trench shields, and sheet piling to protect crews and nearby structures. Our qualified field teams inspect conditions daily, keeping a close eye on soil stability, groundwater, and site changes to ensure safe, uninterrupted work.

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Dewatering and Groundwater Management

Strategic water control enables excavation productivity regardless of subsurface conditions. We self-perform dewatering system design and installation, from wellpoint networks to deep wells, maintaining dry working conditions throughout construction. Our teams manage treatment and discharge in full compliance with California water quality standards.

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Material Management and Spoils Processing

Efficient earthwork logistics maximize value from every cubic yard excavated. We segregate materials on-site for reuse, process unsuitable soils for engineered fill, and coordinate hauling to minimize truck traffic. Whether handling contaminated soils or recycling rock for base material, we transform excavation byproducts into project assets that reduce your overall costs.

Building Essential Infrastructure with Expertise, Integrity, and Innovation

With decades of experience across California, W. M. Lyles Co. has performed excavation work that supports critical infrastructure treating nearly 1 billion gallons of water every day. Our crews specialize in complex excavation for water and wastewater treatment facilities, as well as underground utility systems—foundational work that protects public health and strengthens community resilience.

With a robust fleet of equipment and a highly experienced local workforce, Lyles is built for speed, precision, and adaptability. We move quickly, solve problems on the ground, and keep projects progressing smoothly—minimizing disruptions and maximizing value. This approach builds more than just infrastructure; it builds trust, accountability, and lasting partnerships. When you work with Lyles, you’re working with a team that owns the result from start to finish.