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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

Soils Management

Systematically Filled

DirtMarket has managed the Oyster Bay Regional Shoreline clean fill project site for the East Bay Regional Park District (EBRPD) since 2015. This project is a closed landfill site (former Davis Street Landfill) and an active park. Our services include;

Import clean soil to increase landfill cap depth in over 90 acres of park, including a Disc Golf Course, Off-Leash Dog Area, Bike Skills Area, an Events Area, and various roads, service trails, and parking lots.

Install and maintain SWPPP BMPs, conduct inspections and stormwater sampling, and maintain access to landfill wells systems for year around maintenance.

Provide complete soil documentation in the form of a third-party reviewed, clean-soil submittal package.

Provide front gate security and documents every load entering the site with our trucking software. All incoming soil is rough graded and compacted on delivery per project specifications.

Along with our consultants, we have recently submitted an updated set of soil screening criteria for Oyster Bay to more accurately reflect future use requirements and the latest SF Bay RWQCB environmental data.

How Can We Help?

We take the time to learn about your specific needs and pain points to develop solutions that will have the greatest impact. Select a role below and see how Preston can support your needs!

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Whether you have an inquiry about our services, pricing, needing engineering expertise, or anything else, our team is ready to answer all of your questions.

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How We Help You

We take the time to learn about your specific needs and pain points to develop solutions that will have the greatest impact. Select a role below and see how Preston can support your needs!

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