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Excellence in underground engineering since 1970. Specialties: storm drains, water, sewer, fire protection, natural gas, excavations and more.

Explore Company

Premium underground electrical systems that keep communities running. Specialties: public utilities, telecom, joint trenching, security and more.

Explore Company

Excellence in underground engineering since 1970. Specialties: storm drains, water, sewer, fire protection, natural gas, excavations and more.

Explore Company

Quality. Integrity. Service.

The Preston Companies bring extensive expertise and hands-on partnership to complex projects. Our services include excavating and installing underground wet and dry utilities, soils testing and management, and fill site management.

About Preston

Gateway of Pacific Phase Two

South San Francisco, CA
  • Completion Date

    October 2019

  • Duration

    5 Months

  • General Contractor

    Hathaway Dinwiddie Construction Company

Gateway of Pacific is a premier laboratory and office space at the front door to South San Francisco’s flourishing biotechnology community. PrestonPipelines and DirtMarket partnered to export clean soil of approximately 143,000 cubic yards generated from the construction of two new structures, a two-level below-grade parking garage beneath the plaza area between the two structures, surface parking, and associated improvements. DirtMarket collected additional sampling and testing to confirm the environmental suitability to reuse the soil at multiple sites optimizing the hauling schedule and providing the cost-effective solution for massive soil export.

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