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

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

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

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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.

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Article January 17, 2022

DirtMarket Project Coordinator Reina Calder Elected to Two Professional Women in Building Boards

Reina Calder, DirtMarket Project Coordinator, has been elected to both the 2022 Building Industry Association Bay Area Professional Women in Building (BIA BA PWB) Board as Sponsorship Chair and the 2022 California Building Industry Association Professional Women in Building (CBIA PWB) Board as Programs Chair. In her role as Sponsorship Chair, Calder will be responsible for managing, coordinating, and supporting sponsorships. As Programs Chair, Calder will manage a committee to determine council events, coordinate speakers, and organize programs for members.

Calder has been in the construction industry for over six years and joined the DirtMarket team in 2021. She has been a member of BIA BA PWB since 2020 and acted as Programs Chair in 2021. This is Calder’s first year serving the CBIA PWB Board.

“It’s important to me to be involved in associations that positively impact the industry,” said Reina Calder. “I’m incredibly thankful for DirtMarket and Preston Companies for supporting and investing not only their people but giving the women in our company wings to grow.”

Calder also commented, “The BIA BA’s commitment to support women in all areas of our industry is impressive. During the shelter in place, they removed PWB membership fees to ensure that all women working for a company that has a BIA BA membership could have the same support, mentorship, professional growth, and networking opportunities. Since this is my first year serving on the CBIA PWB Board, I’m looking forward to making a difference on the state level where there are many opportunities to get involved with legislative advocacy. I’m eager to jump in and keep learning.”

About the Building Industry Association of the Bay Area
The Building Industry Association of the Bay Area is a non-profit membership association that advocates at the local, regional and state level in support of an adequate supply of quality homes for people of all income levels. BIA’s members are home builders, trade contractors, suppliers and residential development industry professionals.
Within the organization, BIA links the individual member to the entire industry through informational, educational and technical services and facilitates networking opportunities at targeted meetings and special events. BIA also assembles specialized industry councils and committees that address issues from its members’ unique perspectives. Headquartered in the UFCW Building in Concord, BIA Bay Area’s eight-member staff and consultant team is governed by a 28-member board of directors.

About the California Building Industry Association
The California Building Industry Association is a statewide trade association based in Sacramento representing thousands of member companies including homebuilders, trade contractors, architects, engineers, designers, suppliers and industry professionals in the homebuilding, multi-family and mixed-use development markets.

About DirtMarket
DirtMarket is a subsidiary of Preston Companies that specializes in developing cost-effective sustainable soil solutions that minimize contaminated export and maximize clean soil export. DirtMarket utilizes their broad network and soils market insights to find the most cost-effective source for clean soil, meeting a variety of environmental screening levels and geotechnical properties.

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