SAN RAFAEL ROCK QUARRY, INC.

SAN RAFAEL ROCK QUARRY, INC. specializes in heavy civil engineering construction, with demonstrated expertise in erosion control and riverbank stabilization projects. Their core capabilities include the design and implementation of structural and naturalistic solutions to mitigate hydraulic erosion, manage sediment transport, and restore riparian integrity. The contractor applies earthmoving, rock armoring, gabion installation, and streambed reconfiguration techniques to protect critical infrastructure and natural waterways. Their technical proficiency lies in site-specific geotechnical assessments, hydraulic modeling, and compliance with environmental mitigation standards for federally regulated waterways. A key differentiator is their ability to execute complex civil works in sensitive ecological zones under stringent regulatory oversight, ensuring long-term structural resilience while minimizing environmental impact. The company has delivered projects for the Department of Defense, specifically addressing shoreline and riverine erosion threats to military installations or support infrastructure. This engagement suggests a focus on mission-critical land protection and asset preservation within DoD-managed properties, likely involving coordination with Army Corps of Engineers protocols and environmental compliance frameworks such as NEPA and CWA Section 404. The primary NAICS code 237990 reflects their focus on other heavy and civil engineering construction—encompassing non-building infrastructure such as erosion control structures, coastal defenses, and waterway modifications. This positions them within the niche market of specialized civil works contractors serving federal land and water resource agencies, particularly those requiring site-specific, labor-intensive solutions beyond standard road or bridge construction. SAN RAFAEL ROCK QUARRY, INC. is a small business structured as a 2L entity, headquartered in San Rafael, California. While no federal certifications are listed, their geographic presence in Northern California supports regional responsiveness to coastal and riverine infrastructure needs. Their market positioning is defined by hands-on execution of high-impact, low-volume civil engineering tasks requiring precision, environmental awareness, and adherence to federal construction standards.