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Johnston General Engineering, also known as Johnston Construction Co, is a construction company located in Napa, California. We specialize in excavating, grading, and underground utility construction. As a trusted general contractor in Napa, we offer our services to contractors in Napa, CA, property owners, and wineries throughout Napa and Sonoma County. Our team provides a variety of site work services, including land clearing, earthwork, and drainage infrastructure construction. Fire protection is a key service we offer; we construct water tank pads, install underground piping, and set up fire hydrants and fire apparatus. With our extensive experience and resources, Johnston General Engineering ensures that every job is completed correctly!