Two towering piles of gravel sit on a construction site. The piles measure at least two stories tall. Aerial view of a mobile conveyor belt deposited gravel over top of large yellow drainage pipes (a.k.a. chambers). Aerial view of a mobile conveyor belt depositing stockpiles of gravel onto a field covered with a black liner. A bulldozer moves down the center of the field, spreading gravel outward. An aerial view of a gravel field foundation. The field is covered in small stockpiles of gravel that must be graded in order to bring the gravel foundation to the right level. A tractor can be seen in the upper left-hand corner of the photo. A worker can be seen in the middle of the photo. Long shadows of stadium lights are cast on the top and right-hand sides of the photo. An excavator sits atop a large hill of topsoil. A modern building with many glass windows can be seen in the background. An aerial view shows a long conveyor belt floating above a pea gravel surface. The conveyor belt is depositing a soil mix into stock piles on top of the pea gravel. An aerial view of a bulldozer operator pushing a soil mix outward over a layer of pea gravel. White pipes can be seen throughout, which will provide irrigation for the field. An overhead view of a bulldozer operator pushing gravel outward over drain lines. A roller machine passes over top of gravel. The gravel stretches back into the distance, and lines are visible where the roller has already passed over the gravel. Words on the orange and black roller read A paved e-layer section contrasts with a section of unpaved gravel. An aerial view shows a paving machine adding e-layer to a field that is halfway paved. Synthetic turf casts a shadow onto a section of asphalt-like e-layer, which hasn't yet been covered in turf. A closeup of sythetic. Sand and cork pieces can be seen backfilling the spaces around the synthetic grass blades. An aerial view of a soccer team practicing on the new fields at the Seattle Sounders FC training center. Buildings can be seen in the distance.

Seattle Sounders FC Training Fields

Date: June 2023–February 2024
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Description

On the eve of their 50th anniversary, the Seattle Sounders FC commissioned the transformation of a Longacres office into their new headquarters. The process involved converted a parking lot into four training fields, including two grass fields and two synthetic turf fields. Washington Rock Quarries supplied materials to general contractor Venture General Contracting and their subcontractors throughout the construction process.

Materials

30,800 Tons of Chamber Rock
24,000 Tons of 1-¼" Minus Tailings, Grade 1
9,000 Tons of Permeable Aggregate Base Course
2,900 Tons of Permeable Aggregate Top Course
370 Tons of Cork Sand
300 Tons of 4"–8" Quarry Spalls
270 Tons of E-Layer Stone
270 Tons of 2"–4" Quarry Spalls
60 Tons of CSTC
60 Tons of Light Loose Riprap
30 Tons of Washed Utility Sand

Highlights

Washington Rock Quarries has decades of experience creating specialty products for both natural grass and synthetic turf fields. Our products were used in all stages of the parking lot-to-field conversion process, from the chamber rock used in the drainage systems to the infill sand used on top of the turf fields. Over 65,000 tons of our products were used on the project.

Check out the Seattle Sounders videos about the construction process and the final walkthrough of the new facilities.

Aerial photography by Tim Rice.

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